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authorAndrea Bastoni <bastoni@cs.unc.edu>2010-05-30 19:16:45 -0400
committerAndrea Bastoni <bastoni@cs.unc.edu>2010-05-30 19:16:45 -0400
commitada47b5fe13d89735805b566185f4885f5a3f750 (patch)
tree644b88f8a71896307d71438e9b3af49126ffb22b /arch/microblaze/kernel
parent43e98717ad40a4ae64545b5ba047c7b86aa44f4f (diff)
parent3280f21d43ee541f97f8cda5792150d2dbec20d5 (diff)
Merge branch 'wip-2.6.34' into old-private-masterarchived-private-master
Diffstat (limited to 'arch/microblaze/kernel')
-rw-r--r--arch/microblaze/kernel/Makefile16
-rw-r--r--arch/microblaze/kernel/asm-offsets.c2
-rw-r--r--arch/microblaze/kernel/cpu/Makefile4
-rw-r--r--arch/microblaze/kernel/cpu/cache.c762
-rw-r--r--arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c15
-rw-r--r--arch/microblaze/kernel/cpu/cpuinfo-static.c17
-rw-r--r--arch/microblaze/kernel/cpu/cpuinfo.c8
-rw-r--r--arch/microblaze/kernel/cpu/mb.c18
-rw-r--r--arch/microblaze/kernel/cpu/pvr.c2
-rw-r--r--arch/microblaze/kernel/dma.c157
-rw-r--r--arch/microblaze/kernel/entry-nommu.S14
-rw-r--r--arch/microblaze/kernel/entry.S135
-rw-r--r--arch/microblaze/kernel/exceptions.c2
-rw-r--r--arch/microblaze/kernel/ftrace.c231
-rw-r--r--arch/microblaze/kernel/head.S26
-rw-r--r--arch/microblaze/kernel/heartbeat.c15
-rw-r--r--arch/microblaze/kernel/hw_exception_handler.S112
-rw-r--r--arch/microblaze/kernel/intc.c10
-rw-r--r--arch/microblaze/kernel/irq.c22
-rw-r--r--arch/microblaze/kernel/mcount.S170
-rw-r--r--arch/microblaze/kernel/microblaze_ksyms.c16
-rw-r--r--arch/microblaze/kernel/misc.S43
-rw-r--r--arch/microblaze/kernel/module.c3
-rw-r--r--arch/microblaze/kernel/of_platform.c3
-rw-r--r--arch/microblaze/kernel/process.c11
-rw-r--r--arch/microblaze/kernel/prom.c1013
-rw-r--r--arch/microblaze/kernel/prom_parse.c2
-rw-r--r--arch/microblaze/kernel/ptrace.c65
-rw-r--r--arch/microblaze/kernel/reset.c140
-rw-r--r--arch/microblaze/kernel/setup.c86
-rw-r--r--arch/microblaze/kernel/signal.c35
-rw-r--r--arch/microblaze/kernel/stacktrace.c65
-rw-r--r--arch/microblaze/kernel/sys_microblaze.c39
-rw-r--r--arch/microblaze/kernel/syscall_table.S9
-rw-r--r--arch/microblaze/kernel/timer.c28
-rw-r--r--arch/microblaze/kernel/traps.c40
-rw-r--r--arch/microblaze/kernel/vmlinux.lds.S9
37 files changed, 1756 insertions, 1589 deletions
diff --git a/arch/microblaze/kernel/Makefile b/arch/microblaze/kernel/Makefile
index d487729683de..e51bc1520825 100644
--- a/arch/microblaze/kernel/Makefile
+++ b/arch/microblaze/kernel/Makefile
@@ -2,12 +2,22 @@
2# Makefile 2# Makefile
3# 3#
4 4
5ifdef CONFIG_FUNCTION_TRACER
6# Do not trace early boot code and low level code
7CFLAGS_REMOVE_timer.o = -pg
8CFLAGS_REMOVE_intc.o = -pg
9CFLAGS_REMOVE_early_printk.o = -pg
10CFLAGS_REMOVE_selfmod.o = -pg
11CFLAGS_REMOVE_heartbeat.o = -pg
12CFLAGS_REMOVE_ftrace.o = -pg
13endif
14
5extra-y := head.o vmlinux.lds 15extra-y := head.o vmlinux.lds
6 16
7obj-y += exceptions.o \ 17obj-y += dma.o exceptions.o \
8 hw_exception_handler.o init_task.o intc.o irq.o of_device.o \ 18 hw_exception_handler.o init_task.o intc.o irq.o of_device.o \
9 of_platform.o process.o prom.o prom_parse.o ptrace.o \ 19 of_platform.o process.o prom.o prom_parse.o ptrace.o \
10 setup.o signal.o sys_microblaze.o timer.o traps.o 20 setup.o signal.o sys_microblaze.o timer.o traps.o reset.o
11 21
12obj-y += cpu/ 22obj-y += cpu/
13 23
@@ -16,5 +26,7 @@ obj-$(CONFIG_SELFMOD) += selfmod.o
16obj-$(CONFIG_HEART_BEAT) += heartbeat.o 26obj-$(CONFIG_HEART_BEAT) += heartbeat.o
17obj-$(CONFIG_MODULES) += microblaze_ksyms.o module.o 27obj-$(CONFIG_MODULES) += microblaze_ksyms.o module.o
18obj-$(CONFIG_MMU) += misc.o 28obj-$(CONFIG_MMU) += misc.o
29obj-$(CONFIG_STACKTRACE) += stacktrace.o
30obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o mcount.o
19 31
20obj-y += entry$(MMU).o 32obj-y += entry$(MMU).o
diff --git a/arch/microblaze/kernel/asm-offsets.c b/arch/microblaze/kernel/asm-offsets.c
index 7bc7b68f97db..c1b459c97571 100644
--- a/arch/microblaze/kernel/asm-offsets.c
+++ b/arch/microblaze/kernel/asm-offsets.c
@@ -16,6 +16,7 @@
16#include <linux/hardirq.h> 16#include <linux/hardirq.h>
17#include <linux/thread_info.h> 17#include <linux/thread_info.h>
18#include <linux/kbuild.h> 18#include <linux/kbuild.h>
19#include <asm/cpuinfo.h>
19 20
20int main(int argc, char *argv[]) 21int main(int argc, char *argv[])
21{ 22{
@@ -90,6 +91,7 @@ int main(int argc, char *argv[])
90 DEFINE(TI_FLAGS, offsetof(struct thread_info, flags)); 91 DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
91 DEFINE(TI_ADDR_LIMIT, offsetof(struct thread_info, addr_limit)); 92 DEFINE(TI_ADDR_LIMIT, offsetof(struct thread_info, addr_limit));
92 DEFINE(TI_CPU_CONTEXT, offsetof(struct thread_info, cpu_context)); 93 DEFINE(TI_CPU_CONTEXT, offsetof(struct thread_info, cpu_context));
94 DEFINE(TI_PREEMPT_COUNT, offsetof(struct thread_info, preempt_count));
93 BLANK(); 95 BLANK();
94 96
95 /* struct cpu_context */ 97 /* struct cpu_context */
diff --git a/arch/microblaze/kernel/cpu/Makefile b/arch/microblaze/kernel/cpu/Makefile
index 20646e549271..59cc7bceaf8c 100644
--- a/arch/microblaze/kernel/cpu/Makefile
+++ b/arch/microblaze/kernel/cpu/Makefile
@@ -2,6 +2,10 @@
2# Build the appropriate CPU version support 2# Build the appropriate CPU version support
3# 3#
4 4
5ifdef CONFIG_FUNCTION_TRACER
6CFLAGS_REMOVE_cache.o = -pg
7endif
8
5EXTRA_CFLAGS += -DCPU_MAJOR=$(CPU_MAJOR) -DCPU_MINOR=$(CPU_MINOR) \ 9EXTRA_CFLAGS += -DCPU_MAJOR=$(CPU_MAJOR) -DCPU_MINOR=$(CPU_MINOR) \
6 -DCPU_REV=$(CPU_REV) 10 -DCPU_REV=$(CPU_REV)
7 11
diff --git a/arch/microblaze/kernel/cpu/cache.c b/arch/microblaze/kernel/cpu/cache.c
index af866a450125..109876e8d643 100644
--- a/arch/microblaze/kernel/cpu/cache.c
+++ b/arch/microblaze/kernel/cpu/cache.c
@@ -3,7 +3,7 @@
3 * 3 *
4 * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu> 4 * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
5 * Copyright (C) 2007-2009 PetaLogix 5 * Copyright (C) 2007-2009 PetaLogix
6 * Copyright (C) 2007 John Williams <john.williams@petalogix.com> 6 * Copyright (C) 2007-2009 John Williams <john.williams@petalogix.com>
7 * 7 *
8 * This file is subject to the terms and conditions of the GNU General 8 * This file is subject to the terms and conditions of the GNU General
9 * Public License. See the file COPYING in the main directory of this 9 * Public License. See the file COPYING in the main directory of this
@@ -13,243 +13,655 @@
13#include <asm/cacheflush.h> 13#include <asm/cacheflush.h>
14#include <linux/cache.h> 14#include <linux/cache.h>
15#include <asm/cpuinfo.h> 15#include <asm/cpuinfo.h>
16#include <asm/pvr.h>
16 17
17/* Exported functions */ 18static inline void __enable_icache_msr(void)
19{
20 __asm__ __volatile__ (" msrset r0, %0; \
21 nop; " \
22 : : "i" (MSR_ICE) : "memory");
23}
24
25static inline void __disable_icache_msr(void)
26{
27 __asm__ __volatile__ (" msrclr r0, %0; \
28 nop; " \
29 : : "i" (MSR_ICE) : "memory");
30}
18 31
19void _enable_icache(void) 32static inline void __enable_dcache_msr(void)
20{ 33{
21 if (cpuinfo.use_icache) { 34 __asm__ __volatile__ (" msrset r0, %0; \
22#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR 35 nop; " \
23 __asm__ __volatile__ (" \ 36 : \
24 msrset r0, %0; \ 37 : "i" (MSR_DCE) \
25 nop; " \
26 : \
27 : "i" (MSR_ICE) \
28 : "memory"); 38 : "memory");
29#else
30 __asm__ __volatile__ (" \
31 mfs r12, rmsr; \
32 nop; \
33 ori r12, r12, %0; \
34 mts rmsr, r12; \
35 nop; " \
36 : \
37 : "i" (MSR_ICE) \
38 : "memory", "r12");
39#endif
40 }
41} 39}
42 40
43void _disable_icache(void) 41static inline void __disable_dcache_msr(void)
44{ 42{
45 if (cpuinfo.use_icache) { 43 __asm__ __volatile__ (" msrclr r0, %0; \
46#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR 44 nop; " \
47 __asm__ __volatile__ (" \ 45 : \
48 msrclr r0, %0; \ 46 : "i" (MSR_DCE) \
49 nop; " \
50 : \
51 : "i" (MSR_ICE) \
52 : "memory"); 47 : "memory");
53#else 48}
54 __asm__ __volatile__ (" \ 49
55 mfs r12, rmsr; \ 50static inline void __enable_icache_nomsr(void)
56 nop; \ 51{
57 andi r12, r12, ~%0; \ 52 __asm__ __volatile__ (" mfs r12, rmsr; \
58 mts rmsr, r12; \ 53 nop; \
59 nop; " \ 54 ori r12, r12, %0; \
60 : \ 55 mts rmsr, r12; \
61 : "i" (MSR_ICE) \ 56 nop; " \
57 : \
58 : "i" (MSR_ICE) \
62 : "memory", "r12"); 59 : "memory", "r12");
63#endif
64 }
65} 60}
66 61
67void _invalidate_icache(unsigned int addr) 62static inline void __disable_icache_nomsr(void)
68{ 63{
69 if (cpuinfo.use_icache) { 64 __asm__ __volatile__ (" mfs r12, rmsr; \
70 __asm__ __volatile__ (" \ 65 nop; \
71 wic %0, r0" \ 66 andi r12, r12, ~%0; \
72 : \ 67 mts rmsr, r12; \
73 : "r" (addr)); 68 nop; " \
74 } 69 : \
70 : "i" (MSR_ICE) \
71 : "memory", "r12");
75} 72}
76 73
77void _enable_dcache(void) 74static inline void __enable_dcache_nomsr(void)
78{ 75{
79 if (cpuinfo.use_dcache) { 76 __asm__ __volatile__ (" mfs r12, rmsr; \
80#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR 77 nop; \
81 __asm__ __volatile__ (" \ 78 ori r12, r12, %0; \
82 msrset r0, %0; \ 79 mts rmsr, r12; \
83 nop; " \ 80 nop; " \
84 : \ 81 : \
85 : "i" (MSR_DCE) \ 82 : "i" (MSR_DCE) \
86 : "memory"); 83 : "memory", "r12");
87#else 84}
88 __asm__ __volatile__ (" \ 85
89 mfs r12, rmsr; \ 86static inline void __disable_dcache_nomsr(void)
90 nop; \ 87{
91 ori r12, r12, %0; \ 88 __asm__ __volatile__ (" mfs r12, rmsr; \
92 mts rmsr, r12; \ 89 nop; \
93 nop; " \ 90 andi r12, r12, ~%0; \
94 : \ 91 mts rmsr, r12; \
95 : "i" (MSR_DCE) \ 92 nop; " \
93 : \
94 : "i" (MSR_DCE) \
96 : "memory", "r12"); 95 : "memory", "r12");
96}
97
98
99/* Helper macro for computing the limits of cache range loops
100 *
101 * End address can be unaligned which is OK for C implementation.
102 * ASM implementation align it in ASM macros
103 */
104#define CACHE_LOOP_LIMITS(start, end, cache_line_length, cache_size) \
105do { \
106 int align = ~(cache_line_length - 1); \
107 end = min(start + cache_size, end); \
108 start &= align; \
109} while (0);
110
111/*
112 * Helper macro to loop over the specified cache_size/line_length and
113 * execute 'op' on that cacheline
114 */
115#define CACHE_ALL_LOOP(cache_size, line_length, op) \
116do { \
117 unsigned int len = cache_size - line_length; \
118 int step = -line_length; \
119 WARN_ON(step >= 0); \
120 \
121 __asm__ __volatile__ (" 1: " #op " %0, r0; \
122 bgtid %0, 1b; \
123 addk %0, %0, %1; \
124 " : : "r" (len), "r" (step) \
125 : "memory"); \
126} while (0);
127
128/* Used for wdc.flush/clear which can use rB for offset which is not possible
129 * to use for simple wdc or wic.
130 *
131 * start address is cache aligned
132 * end address is not aligned, if end is aligned then I have to substract
133 * cacheline length because I can't flush/invalidate the next cacheline.
134 * If is not, I align it because I will flush/invalidate whole line.
135 */
136#define CACHE_RANGE_LOOP_2(start, end, line_length, op) \
137do { \
138 int step = -line_length; \
139 int align = ~(line_length - 1); \
140 int count; \
141 end = ((end & align) == end) ? end - line_length : end & align; \
142 count = end - start; \
143 WARN_ON(count < 0); \
144 \
145 __asm__ __volatile__ (" 1: " #op " %0, %1; \
146 bgtid %1, 1b; \
147 addk %1, %1, %2; \
148 " : : "r" (start), "r" (count), \
149 "r" (step) : "memory"); \
150} while (0);
151
152/* It is used only first parameter for OP - for wic, wdc */
153#define CACHE_RANGE_LOOP_1(start, end, line_length, op) \
154do { \
155 int volatile temp; \
156 int align = ~(line_length - 1); \
157 end = ((end & align) == end) ? end - line_length : end & align; \
158 WARN_ON(end - start < 0); \
159 \
160 __asm__ __volatile__ (" 1: " #op " %1, r0; \
161 cmpu %0, %1, %2; \
162 bgtid %0, 1b; \
163 addk %1, %1, %3; \
164 " : : "r" (temp), "r" (start), "r" (end),\
165 "r" (line_length) : "memory"); \
166} while (0);
167
168#define ASM_LOOP
169
170static void __flush_icache_range_msr_irq(unsigned long start, unsigned long end)
171{
172 unsigned long flags;
173#ifndef ASM_LOOP
174 int i;
97#endif 175#endif
98 } 176 pr_debug("%s: start 0x%x, end 0x%x\n", __func__,
177 (unsigned int)start, (unsigned int) end);
178
179 CACHE_LOOP_LIMITS(start, end,
180 cpuinfo.icache_line_length, cpuinfo.icache_size);
181
182 local_irq_save(flags);
183 __disable_icache_msr();
184
185#ifdef ASM_LOOP
186 CACHE_RANGE_LOOP_1(start, end, cpuinfo.icache_line_length, wic);
187#else
188 for (i = start; i < end; i += cpuinfo.icache_line_length)
189 __asm__ __volatile__ ("wic %0, r0;" \
190 : : "r" (i));
191#endif
192 __enable_icache_msr();
193 local_irq_restore(flags);
99} 194}
100 195
101void _disable_dcache(void) 196static void __flush_icache_range_nomsr_irq(unsigned long start,
197 unsigned long end)
102{ 198{
103#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR 199 unsigned long flags;
104 __asm__ __volatile__ (" \ 200#ifndef ASM_LOOP
105 msrclr r0, %0; \ 201 int i;
106 nop; " \ 202#endif
107 : \ 203 pr_debug("%s: start 0x%x, end 0x%x\n", __func__,
108 : "i" (MSR_DCE) \ 204 (unsigned int)start, (unsigned int) end);
109 : "memory"); 205
206 CACHE_LOOP_LIMITS(start, end,
207 cpuinfo.icache_line_length, cpuinfo.icache_size);
208
209 local_irq_save(flags);
210 __disable_icache_nomsr();
211
212#ifdef ASM_LOOP
213 CACHE_RANGE_LOOP_1(start, end, cpuinfo.icache_line_length, wic);
110#else 214#else
111 __asm__ __volatile__ (" \ 215 for (i = start; i < end; i += cpuinfo.icache_line_length)
112 mfs r12, rmsr; \ 216 __asm__ __volatile__ ("wic %0, r0;" \
113 nop; \ 217 : : "r" (i));
114 andi r12, r12, ~%0; \
115 mts rmsr, r12; \
116 nop; " \
117 : \
118 : "i" (MSR_DCE) \
119 : "memory", "r12");
120#endif 218#endif
219
220 __enable_icache_nomsr();
221 local_irq_restore(flags);
121} 222}
122 223
123void _invalidate_dcache(unsigned int addr) 224static void __flush_icache_range_noirq(unsigned long start,
225 unsigned long end)
124{ 226{
125 __asm__ __volatile__ (" \ 227#ifndef ASM_LOOP
126 wdc %0, r0" \ 228 int i;
127 : \ 229#endif
128 : "r" (addr)); 230 pr_debug("%s: start 0x%x, end 0x%x\n", __func__,
231 (unsigned int)start, (unsigned int) end);
232
233 CACHE_LOOP_LIMITS(start, end,
234 cpuinfo.icache_line_length, cpuinfo.icache_size);
235#ifdef ASM_LOOP
236 CACHE_RANGE_LOOP_1(start, end, cpuinfo.icache_line_length, wic);
237#else
238 for (i = start; i < end; i += cpuinfo.icache_line_length)
239 __asm__ __volatile__ ("wic %0, r0;" \
240 : : "r" (i));
241#endif
129} 242}
130 243
131void __invalidate_icache_all(void) 244static void __flush_icache_all_msr_irq(void)
132{ 245{
133 unsigned int i; 246 unsigned long flags;
134 unsigned flags; 247#ifndef ASM_LOOP
248 int i;
249#endif
250 pr_debug("%s\n", __func__);
135 251
136 if (cpuinfo.use_icache) { 252 local_irq_save(flags);
137 local_irq_save(flags); 253 __disable_icache_msr();
138 __disable_icache(); 254#ifdef ASM_LOOP
255 CACHE_ALL_LOOP(cpuinfo.icache_size, cpuinfo.icache_line_length, wic);
256#else
257 for (i = 0; i < cpuinfo.icache_size;
258 i += cpuinfo.icache_line_length)
259 __asm__ __volatile__ ("wic %0, r0;" \
260 : : "r" (i));
261#endif
262 __enable_icache_msr();
263 local_irq_restore(flags);
264}
139 265
140 /* Just loop through cache size and invalidate, no need to add 266static void __flush_icache_all_nomsr_irq(void)
141 CACHE_BASE address */ 267{
142 for (i = 0; i < cpuinfo.icache_size; 268 unsigned long flags;
143 i += cpuinfo.icache_line) 269#ifndef ASM_LOOP
144 __invalidate_icache(i); 270 int i;
271#endif
272 pr_debug("%s\n", __func__);
145 273
146 __enable_icache(); 274 local_irq_save(flags);
147 local_irq_restore(flags); 275 __disable_icache_nomsr();
148 } 276#ifdef ASM_LOOP
277 CACHE_ALL_LOOP(cpuinfo.icache_size, cpuinfo.icache_line_length, wic);
278#else
279 for (i = 0; i < cpuinfo.icache_size;
280 i += cpuinfo.icache_line_length)
281 __asm__ __volatile__ ("wic %0, r0;" \
282 : : "r" (i));
283#endif
284 __enable_icache_nomsr();
285 local_irq_restore(flags);
149} 286}
150 287
151void __invalidate_icache_range(unsigned long start, unsigned long end) 288static void __flush_icache_all_noirq(void)
152{ 289{
153 unsigned int i; 290#ifndef ASM_LOOP
154 unsigned flags; 291 int i;
155 unsigned int align; 292#endif
293 pr_debug("%s\n", __func__);
294#ifdef ASM_LOOP
295 CACHE_ALL_LOOP(cpuinfo.icache_size, cpuinfo.icache_line_length, wic);
296#else
297 for (i = 0; i < cpuinfo.icache_size;
298 i += cpuinfo.icache_line_length)
299 __asm__ __volatile__ ("wic %0, r0;" \
300 : : "r" (i));
301#endif
302}
156 303
157 if (cpuinfo.use_icache) { 304static void __invalidate_dcache_all_msr_irq(void)
158 /* 305{
159 * No need to cover entire cache range, 306 unsigned long flags;
160 * just cover cache footprint 307#ifndef ASM_LOOP
161 */ 308 int i;
162 end = min(start + cpuinfo.icache_size, end); 309#endif
163 align = ~(cpuinfo.icache_line - 1); 310 pr_debug("%s\n", __func__);
164 start &= align; /* Make sure we are aligned */ 311
165 /* Push end up to the next cache line */ 312 local_irq_save(flags);
166 end = ((end & align) + cpuinfo.icache_line); 313 __disable_dcache_msr();
314#ifdef ASM_LOOP
315 CACHE_ALL_LOOP(cpuinfo.dcache_size, cpuinfo.dcache_line_length, wdc);
316#else
317 for (i = 0; i < cpuinfo.dcache_size;
318 i += cpuinfo.dcache_line_length)
319 __asm__ __volatile__ ("wdc %0, r0;" \
320 : : "r" (i));
321#endif
322 __enable_dcache_msr();
323 local_irq_restore(flags);
324}
167 325
168 local_irq_save(flags); 326static void __invalidate_dcache_all_nomsr_irq(void)
169 __disable_icache(); 327{
328 unsigned long flags;
329#ifndef ASM_LOOP
330 int i;
331#endif
332 pr_debug("%s\n", __func__);
170 333
171 for (i = start; i < end; i += cpuinfo.icache_line) 334 local_irq_save(flags);
172 __invalidate_icache(i); 335 __disable_dcache_nomsr();
336#ifdef ASM_LOOP
337 CACHE_ALL_LOOP(cpuinfo.dcache_size, cpuinfo.dcache_line_length, wdc);
338#else
339 for (i = 0; i < cpuinfo.dcache_size;
340 i += cpuinfo.dcache_line_length)
341 __asm__ __volatile__ ("wdc %0, r0;" \
342 : : "r" (i));
343#endif
344 __enable_dcache_nomsr();
345 local_irq_restore(flags);
346}
173 347
174 __enable_icache(); 348static void __invalidate_dcache_all_noirq_wt(void)
175 local_irq_restore(flags); 349{
176 } 350#ifndef ASM_LOOP
351 int i;
352#endif
353 pr_debug("%s\n", __func__);
354#ifdef ASM_LOOP
355 CACHE_ALL_LOOP(cpuinfo.dcache_size, cpuinfo.dcache_line_length, wdc)
356#else
357 for (i = 0; i < cpuinfo.dcache_size;
358 i += cpuinfo.dcache_line_length)
359 __asm__ __volatile__ ("wdc %0, r0;" \
360 : : "r" (i));
361#endif
177} 362}
178 363
179void __invalidate_icache_page(struct vm_area_struct *vma, struct page *page) 364/* FIXME It is blindly invalidation as is expected
365 * but can't be called on noMMU in microblaze_cache_init below
366 *
367 * MS: noMMU kernel won't boot if simple wdc is used
368 * The reason should be that there are discared data which kernel needs
369 */
370static void __invalidate_dcache_all_wb(void)
180{ 371{
181 __invalidate_icache_all(); 372#ifndef ASM_LOOP
373 int i;
374#endif
375 pr_debug("%s\n", __func__);
376#ifdef ASM_LOOP
377 CACHE_ALL_LOOP(cpuinfo.dcache_size, cpuinfo.dcache_line_length,
378 wdc)
379#else
380 for (i = 0; i < cpuinfo.dcache_size;
381 i += cpuinfo.dcache_line_length)
382 __asm__ __volatile__ ("wdc %0, r0;" \
383 : : "r" (i));
384#endif
182} 385}
183 386
184void __invalidate_icache_user_range(struct vm_area_struct *vma, 387static void __invalidate_dcache_range_wb(unsigned long start,
185 struct page *page, unsigned long adr, 388 unsigned long end)
186 int len)
187{ 389{
188 __invalidate_icache_all(); 390#ifndef ASM_LOOP
391 int i;
392#endif
393 pr_debug("%s: start 0x%x, end 0x%x\n", __func__,
394 (unsigned int)start, (unsigned int) end);
395
396 CACHE_LOOP_LIMITS(start, end,
397 cpuinfo.dcache_line_length, cpuinfo.dcache_size);
398#ifdef ASM_LOOP
399 CACHE_RANGE_LOOP_2(start, end, cpuinfo.dcache_line_length, wdc.clear);
400#else
401 for (i = start; i < end; i += cpuinfo.dcache_line_length)
402 __asm__ __volatile__ ("wdc.clear %0, r0;" \
403 : : "r" (i));
404#endif
189} 405}
190 406
191void __invalidate_cache_sigtramp(unsigned long addr) 407static void __invalidate_dcache_range_nomsr_wt(unsigned long start,
408 unsigned long end)
192{ 409{
193 __invalidate_icache_range(addr, addr + 8); 410#ifndef ASM_LOOP
411 int i;
412#endif
413 pr_debug("%s: start 0x%x, end 0x%x\n", __func__,
414 (unsigned int)start, (unsigned int) end);
415 CACHE_LOOP_LIMITS(start, end,
416 cpuinfo.dcache_line_length, cpuinfo.dcache_size);
417
418#ifdef ASM_LOOP
419 CACHE_RANGE_LOOP_1(start, end, cpuinfo.dcache_line_length, wdc);
420#else
421 for (i = start; i < end; i += cpuinfo.dcache_line_length)
422 __asm__ __volatile__ ("wdc %0, r0;" \
423 : : "r" (i));
424#endif
194} 425}
195 426
196void __invalidate_dcache_all(void) 427static void __invalidate_dcache_range_msr_irq_wt(unsigned long start,
428 unsigned long end)
197{ 429{
198 unsigned int i; 430 unsigned long flags;
199 unsigned flags; 431#ifndef ASM_LOOP
432 int i;
433#endif
434 pr_debug("%s: start 0x%x, end 0x%x\n", __func__,
435 (unsigned int)start, (unsigned int) end);
436 CACHE_LOOP_LIMITS(start, end,
437 cpuinfo.dcache_line_length, cpuinfo.dcache_size);
200 438
201 if (cpuinfo.use_dcache) { 439 local_irq_save(flags);
202 local_irq_save(flags); 440 __disable_dcache_msr();
203 __disable_dcache();
204 441
205 /* 442#ifdef ASM_LOOP
206 * Just loop through cache size and invalidate, 443 CACHE_RANGE_LOOP_1(start, end, cpuinfo.dcache_line_length, wdc);
207 * no need to add CACHE_BASE address 444#else
208 */ 445 for (i = start; i < end; i += cpuinfo.dcache_line_length)
209 for (i = 0; i < cpuinfo.dcache_size; 446 __asm__ __volatile__ ("wdc %0, r0;" \
210 i += cpuinfo.dcache_line) 447 : : "r" (i));
211 __invalidate_dcache(i); 448#endif
212 449
213 __enable_dcache(); 450 __enable_dcache_msr();
214 local_irq_restore(flags); 451 local_irq_restore(flags);
215 }
216} 452}
217 453
218void __invalidate_dcache_range(unsigned long start, unsigned long end) 454static void __invalidate_dcache_range_nomsr_irq(unsigned long start,
455 unsigned long end)
219{ 456{
220 unsigned int i; 457 unsigned long flags;
221 unsigned flags; 458#ifndef ASM_LOOP
222 unsigned int align; 459 int i;
460#endif
461 pr_debug("%s: start 0x%x, end 0x%x\n", __func__,
462 (unsigned int)start, (unsigned int) end);
223 463
224 if (cpuinfo.use_dcache) { 464 CACHE_LOOP_LIMITS(start, end,
225 /* 465 cpuinfo.dcache_line_length, cpuinfo.dcache_size);
226 * No need to cover entire cache range,
227 * just cover cache footprint
228 */
229 end = min(start + cpuinfo.dcache_size, end);
230 align = ~(cpuinfo.dcache_line - 1);
231 start &= align; /* Make sure we are aligned */
232 /* Push end up to the next cache line */
233 end = ((end & align) + cpuinfo.dcache_line);
234 local_irq_save(flags);
235 __disable_dcache();
236 466
237 for (i = start; i < end; i += cpuinfo.dcache_line) 467 local_irq_save(flags);
238 __invalidate_dcache(i); 468 __disable_dcache_nomsr();
239 469
240 __enable_dcache(); 470#ifdef ASM_LOOP
241 local_irq_restore(flags); 471 CACHE_RANGE_LOOP_1(start, end, cpuinfo.dcache_line_length, wdc);
242 } 472#else
473 for (i = start; i < end; i += cpuinfo.dcache_line_length)
474 __asm__ __volatile__ ("wdc %0, r0;" \
475 : : "r" (i));
476#endif
477
478 __enable_dcache_nomsr();
479 local_irq_restore(flags);
480}
481
482static void __flush_dcache_all_wb(void)
483{
484#ifndef ASM_LOOP
485 int i;
486#endif
487 pr_debug("%s\n", __func__);
488#ifdef ASM_LOOP
489 CACHE_ALL_LOOP(cpuinfo.dcache_size, cpuinfo.dcache_line_length,
490 wdc.flush);
491#else
492 for (i = 0; i < cpuinfo.dcache_size;
493 i += cpuinfo.dcache_line_length)
494 __asm__ __volatile__ ("wdc.flush %0, r0;" \
495 : : "r" (i));
496#endif
243} 497}
244 498
245void __invalidate_dcache_page(struct vm_area_struct *vma, struct page *page) 499static void __flush_dcache_range_wb(unsigned long start, unsigned long end)
246{ 500{
247 __invalidate_dcache_all(); 501#ifndef ASM_LOOP
502 int i;
503#endif
504 pr_debug("%s: start 0x%x, end 0x%x\n", __func__,
505 (unsigned int)start, (unsigned int) end);
506
507 CACHE_LOOP_LIMITS(start, end,
508 cpuinfo.dcache_line_length, cpuinfo.dcache_size);
509#ifdef ASM_LOOP
510 CACHE_RANGE_LOOP_2(start, end, cpuinfo.dcache_line_length, wdc.flush);
511#else
512 for (i = start; i < end; i += cpuinfo.dcache_line_length)
513 __asm__ __volatile__ ("wdc.flush %0, r0;" \
514 : : "r" (i));
515#endif
248} 516}
249 517
250void __invalidate_dcache_user_range(struct vm_area_struct *vma, 518/* struct for wb caches and for wt caches */
251 struct page *page, unsigned long adr, 519struct scache *mbc;
252 int len) 520
521/* new wb cache model */
522const struct scache wb_msr = {
523 .ie = __enable_icache_msr,
524 .id = __disable_icache_msr,
525 .ifl = __flush_icache_all_noirq,
526 .iflr = __flush_icache_range_noirq,
527 .iin = __flush_icache_all_noirq,
528 .iinr = __flush_icache_range_noirq,
529 .de = __enable_dcache_msr,
530 .dd = __disable_dcache_msr,
531 .dfl = __flush_dcache_all_wb,
532 .dflr = __flush_dcache_range_wb,
533 .din = __invalidate_dcache_all_wb,
534 .dinr = __invalidate_dcache_range_wb,
535};
536
537/* There is only difference in ie, id, de, dd functions */
538const struct scache wb_nomsr = {
539 .ie = __enable_icache_nomsr,
540 .id = __disable_icache_nomsr,
541 .ifl = __flush_icache_all_noirq,
542 .iflr = __flush_icache_range_noirq,
543 .iin = __flush_icache_all_noirq,
544 .iinr = __flush_icache_range_noirq,
545 .de = __enable_dcache_nomsr,
546 .dd = __disable_dcache_nomsr,
547 .dfl = __flush_dcache_all_wb,
548 .dflr = __flush_dcache_range_wb,
549 .din = __invalidate_dcache_all_wb,
550 .dinr = __invalidate_dcache_range_wb,
551};
552
553/* Old wt cache model with disabling irq and turn off cache */
554const struct scache wt_msr = {
555 .ie = __enable_icache_msr,
556 .id = __disable_icache_msr,
557 .ifl = __flush_icache_all_msr_irq,
558 .iflr = __flush_icache_range_msr_irq,
559 .iin = __flush_icache_all_msr_irq,
560 .iinr = __flush_icache_range_msr_irq,
561 .de = __enable_dcache_msr,
562 .dd = __disable_dcache_msr,
563 .dfl = __invalidate_dcache_all_msr_irq,
564 .dflr = __invalidate_dcache_range_msr_irq_wt,
565 .din = __invalidate_dcache_all_msr_irq,
566 .dinr = __invalidate_dcache_range_msr_irq_wt,
567};
568
569const struct scache wt_nomsr = {
570 .ie = __enable_icache_nomsr,
571 .id = __disable_icache_nomsr,
572 .ifl = __flush_icache_all_nomsr_irq,
573 .iflr = __flush_icache_range_nomsr_irq,
574 .iin = __flush_icache_all_nomsr_irq,
575 .iinr = __flush_icache_range_nomsr_irq,
576 .de = __enable_dcache_nomsr,
577 .dd = __disable_dcache_nomsr,
578 .dfl = __invalidate_dcache_all_nomsr_irq,
579 .dflr = __invalidate_dcache_range_nomsr_irq,
580 .din = __invalidate_dcache_all_nomsr_irq,
581 .dinr = __invalidate_dcache_range_nomsr_irq,
582};
583
584/* New wt cache model for newer Microblaze versions */
585const struct scache wt_msr_noirq = {
586 .ie = __enable_icache_msr,
587 .id = __disable_icache_msr,
588 .ifl = __flush_icache_all_noirq,
589 .iflr = __flush_icache_range_noirq,
590 .iin = __flush_icache_all_noirq,
591 .iinr = __flush_icache_range_noirq,
592 .de = __enable_dcache_msr,
593 .dd = __disable_dcache_msr,
594 .dfl = __invalidate_dcache_all_noirq_wt,
595 .dflr = __invalidate_dcache_range_nomsr_wt,
596 .din = __invalidate_dcache_all_noirq_wt,
597 .dinr = __invalidate_dcache_range_nomsr_wt,
598};
599
600const struct scache wt_nomsr_noirq = {
601 .ie = __enable_icache_nomsr,
602 .id = __disable_icache_nomsr,
603 .ifl = __flush_icache_all_noirq,
604 .iflr = __flush_icache_range_noirq,
605 .iin = __flush_icache_all_noirq,
606 .iinr = __flush_icache_range_noirq,
607 .de = __enable_dcache_nomsr,
608 .dd = __disable_dcache_nomsr,
609 .dfl = __invalidate_dcache_all_noirq_wt,
610 .dflr = __invalidate_dcache_range_nomsr_wt,
611 .din = __invalidate_dcache_all_noirq_wt,
612 .dinr = __invalidate_dcache_range_nomsr_wt,
613};
614
615/* CPU version code for 7.20.c - see arch/microblaze/kernel/cpu/cpuinfo.c */
616#define CPUVER_7_20_A 0x0c
617#define CPUVER_7_20_D 0x0f
618
619#define INFO(s) printk(KERN_INFO "cache: " s "\n");
620
621void microblaze_cache_init(void)
253{ 622{
254 __invalidate_dcache_all(); 623 if (cpuinfo.use_instr & PVR2_USE_MSR_INSTR) {
624 if (cpuinfo.dcache_wb) {
625 INFO("wb_msr");
626 mbc = (struct scache *)&wb_msr;
627 if (cpuinfo.ver_code < CPUVER_7_20_D) {
628 /* MS: problem with signal handling - hw bug */
629 INFO("WB won't work properly");
630 }
631 } else {
632 if (cpuinfo.ver_code >= CPUVER_7_20_A) {
633 INFO("wt_msr_noirq");
634 mbc = (struct scache *)&wt_msr_noirq;
635 } else {
636 INFO("wt_msr");
637 mbc = (struct scache *)&wt_msr;
638 }
639 }
640 } else {
641 if (cpuinfo.dcache_wb) {
642 INFO("wb_nomsr");
643 mbc = (struct scache *)&wb_nomsr;
644 if (cpuinfo.ver_code < CPUVER_7_20_D) {
645 /* MS: problem with signal handling - hw bug */
646 INFO("WB won't work properly");
647 }
648 } else {
649 if (cpuinfo.ver_code >= CPUVER_7_20_A) {
650 INFO("wt_nomsr_noirq");
651 mbc = (struct scache *)&wt_nomsr_noirq;
652 } else {
653 INFO("wt_nomsr");
654 mbc = (struct scache *)&wt_nomsr;
655 }
656 }
657 }
658/* FIXME Invalidation is done in U-BOOT
659 * WT cache: Data is already written to main memory
660 * WB cache: Discard data on noMMU which caused that kernel doesn't boot
661 */
662 /* invalidate_dcache(); */
663 enable_dcache();
664
665 invalidate_icache();
666 enable_icache();
255} 667}
diff --git a/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c b/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
index c259786e7faa..f72dbd66c844 100644
--- a/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
+++ b/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
@@ -21,8 +21,14 @@
21 */ 21 */
22 22
23#define CI(c, p) { ci->c = PVR_##p(pvr); } 23#define CI(c, p) { ci->c = PVR_##p(pvr); }
24
25#if defined(CONFIG_EARLY_PRINTK) && defined(CONFIG_SERIAL_UARTLITE_CONSOLE)
24#define err_printk(x) \ 26#define err_printk(x) \
25 early_printk("ERROR: Microblaze " x "-different for PVR and DTS\n"); 27 early_printk("ERROR: Microblaze " x "-different for PVR and DTS\n");
28#else
29#define err_printk(x) \
30 printk(KERN_INFO "ERROR: Microblaze " x "-different for PVR and DTS\n");
31#endif
26 32
27void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu) 33void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu)
28{ 34{
@@ -70,7 +76,7 @@ void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu)
70 CI(use_icache, USE_ICACHE); 76 CI(use_icache, USE_ICACHE);
71 CI(icache_tagbits, ICACHE_ADDR_TAG_BITS); 77 CI(icache_tagbits, ICACHE_ADDR_TAG_BITS);
72 CI(icache_write, ICACHE_ALLOW_WR); 78 CI(icache_write, ICACHE_ALLOW_WR);
73 CI(icache_line, ICACHE_LINE_LEN); 79 ci->icache_line_length = PVR_ICACHE_LINE_LEN(pvr) << 2;
74 CI(icache_size, ICACHE_BYTE_SIZE); 80 CI(icache_size, ICACHE_BYTE_SIZE);
75 CI(icache_base, ICACHE_BASEADDR); 81 CI(icache_base, ICACHE_BASEADDR);
76 CI(icache_high, ICACHE_HIGHADDR); 82 CI(icache_high, ICACHE_HIGHADDR);
@@ -78,11 +84,16 @@ void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu)
78 CI(use_dcache, USE_DCACHE); 84 CI(use_dcache, USE_DCACHE);
79 CI(dcache_tagbits, DCACHE_ADDR_TAG_BITS); 85 CI(dcache_tagbits, DCACHE_ADDR_TAG_BITS);
80 CI(dcache_write, DCACHE_ALLOW_WR); 86 CI(dcache_write, DCACHE_ALLOW_WR);
81 CI(dcache_line, DCACHE_LINE_LEN); 87 ci->dcache_line_length = PVR_DCACHE_LINE_LEN(pvr) << 2;
82 CI(dcache_size, DCACHE_BYTE_SIZE); 88 CI(dcache_size, DCACHE_BYTE_SIZE);
83 CI(dcache_base, DCACHE_BASEADDR); 89 CI(dcache_base, DCACHE_BASEADDR);
84 CI(dcache_high, DCACHE_HIGHADDR); 90 CI(dcache_high, DCACHE_HIGHADDR);
85 91
92 temp = PVR_DCACHE_USE_WRITEBACK(pvr);
93 if (ci->dcache_wb != temp)
94 err_printk("DCACHE WB");
95 ci->dcache_wb = temp;
96
86 CI(use_dopb, D_OPB); 97 CI(use_dopb, D_OPB);
87 CI(use_iopb, I_OPB); 98 CI(use_iopb, I_OPB);
88 CI(use_dlmb, D_LMB); 99 CI(use_dlmb, D_LMB);
diff --git a/arch/microblaze/kernel/cpu/cpuinfo-static.c b/arch/microblaze/kernel/cpu/cpuinfo-static.c
index adb448f93d5f..6095aa6b5c88 100644
--- a/arch/microblaze/kernel/cpu/cpuinfo-static.c
+++ b/arch/microblaze/kernel/cpu/cpuinfo-static.c
@@ -72,12 +72,12 @@ void __init set_cpuinfo_static(struct cpuinfo *ci, struct device_node *cpu)
72 ci->use_icache = fcpu(cpu, "xlnx,use-icache"); 72 ci->use_icache = fcpu(cpu, "xlnx,use-icache");
73 ci->icache_tagbits = fcpu(cpu, "xlnx,addr-tag-bits"); 73 ci->icache_tagbits = fcpu(cpu, "xlnx,addr-tag-bits");
74 ci->icache_write = fcpu(cpu, "xlnx,allow-icache-wr"); 74 ci->icache_write = fcpu(cpu, "xlnx,allow-icache-wr");
75 ci->icache_line = fcpu(cpu, "xlnx,icache-line-len") << 2; 75 ci->icache_line_length = fcpu(cpu, "xlnx,icache-line-len") << 2;
76 if (!ci->icache_line) { 76 if (!ci->icache_line_length) {
77 if (fcpu(cpu, "xlnx,icache-use-fsl")) 77 if (fcpu(cpu, "xlnx,icache-use-fsl"))
78 ci->icache_line = 4 << 2; 78 ci->icache_line_length = 4 << 2;
79 else 79 else
80 ci->icache_line = 1 << 2; 80 ci->icache_line_length = 1 << 2;
81 } 81 }
82 ci->icache_size = fcpu(cpu, "i-cache-size"); 82 ci->icache_size = fcpu(cpu, "i-cache-size");
83 ci->icache_base = fcpu(cpu, "i-cache-baseaddr"); 83 ci->icache_base = fcpu(cpu, "i-cache-baseaddr");
@@ -86,16 +86,17 @@ void __init set_cpuinfo_static(struct cpuinfo *ci, struct device_node *cpu)
86 ci->use_dcache = fcpu(cpu, "xlnx,use-dcache"); 86 ci->use_dcache = fcpu(cpu, "xlnx,use-dcache");
87 ci->dcache_tagbits = fcpu(cpu, "xlnx,dcache-addr-tag"); 87 ci->dcache_tagbits = fcpu(cpu, "xlnx,dcache-addr-tag");
88 ci->dcache_write = fcpu(cpu, "xlnx,allow-dcache-wr"); 88 ci->dcache_write = fcpu(cpu, "xlnx,allow-dcache-wr");
89 ci->dcache_line = fcpu(cpu, "xlnx,dcache-line-len") << 2; 89 ci->dcache_line_length = fcpu(cpu, "xlnx,dcache-line-len") << 2;
90 if (!ci->dcache_line) { 90 if (!ci->dcache_line_length) {
91 if (fcpu(cpu, "xlnx,dcache-use-fsl")) 91 if (fcpu(cpu, "xlnx,dcache-use-fsl"))
92 ci->dcache_line = 4 << 2; 92 ci->dcache_line_length = 4 << 2;
93 else 93 else
94 ci->dcache_line = 1 << 2; 94 ci->dcache_line_length = 1 << 2;
95 } 95 }
96 ci->dcache_size = fcpu(cpu, "d-cache-size"); 96 ci->dcache_size = fcpu(cpu, "d-cache-size");
97 ci->dcache_base = fcpu(cpu, "d-cache-baseaddr"); 97 ci->dcache_base = fcpu(cpu, "d-cache-baseaddr");
98 ci->dcache_high = fcpu(cpu, "d-cache-highaddr"); 98 ci->dcache_high = fcpu(cpu, "d-cache-highaddr");
99 ci->dcache_wb = fcpu(cpu, "xlnx,dcache-use-writeback");
99 100
100 ci->use_dopb = fcpu(cpu, "xlnx,d-opb"); 101 ci->use_dopb = fcpu(cpu, "xlnx,d-opb");
101 ci->use_iopb = fcpu(cpu, "xlnx,i-opb"); 102 ci->use_iopb = fcpu(cpu, "xlnx,i-opb");
diff --git a/arch/microblaze/kernel/cpu/cpuinfo.c b/arch/microblaze/kernel/cpu/cpuinfo.c
index 3539babc1c18..255ef880351e 100644
--- a/arch/microblaze/kernel/cpu/cpuinfo.c
+++ b/arch/microblaze/kernel/cpu/cpuinfo.c
@@ -9,7 +9,6 @@
9 */ 9 */
10 10
11#include <linux/init.h> 11#include <linux/init.h>
12#include <linux/slab.h>
13#include <asm/cpuinfo.h> 12#include <asm/cpuinfo.h>
14#include <asm/pvr.h> 13#include <asm/pvr.h>
15 14
@@ -29,11 +28,8 @@ const struct cpu_ver_key cpu_ver_lookup[] = {
29 {"7.20.a", 0x0c}, 28 {"7.20.a", 0x0c},
30 {"7.20.b", 0x0d}, 29 {"7.20.b", 0x0d},
31 {"7.20.c", 0x0e}, 30 {"7.20.c", 0x0e},
32 /* FIXME There is no keycode defined in MBV for these versions */ 31 {"7.20.d", 0x0f},
33 {"2.10.a", 0x10}, 32 {"7.30.a", 0x10},
34 {"3.00.a", 0x20},
35 {"4.00.a", 0x30},
36 {"4.00.b", 0x40},
37 {NULL, 0}, 33 {NULL, 0},
38}; 34};
39 35
diff --git a/arch/microblaze/kernel/cpu/mb.c b/arch/microblaze/kernel/cpu/mb.c
index 4dcfccdbc364..4216eb1eaa32 100644
--- a/arch/microblaze/kernel/cpu/mb.c
+++ b/arch/microblaze/kernel/cpu/mb.c
@@ -98,16 +98,22 @@ static int show_cpuinfo(struct seq_file *m, void *v)
98 98
99 if (cpuinfo.use_icache) 99 if (cpuinfo.use_icache)
100 count += seq_printf(m, 100 count += seq_printf(m,
101 "Icache:\t\t%ukB\n", 101 "Icache:\t\t%ukB\tline length:\t%dB\n",
102 cpuinfo.icache_size >> 10); 102 cpuinfo.icache_size >> 10,
103 cpuinfo.icache_line_length);
103 else 104 else
104 count += seq_printf(m, "Icache:\t\tno\n"); 105 count += seq_printf(m, "Icache:\t\tno\n");
105 106
106 if (cpuinfo.use_dcache) 107 if (cpuinfo.use_dcache) {
107 count += seq_printf(m, 108 count += seq_printf(m,
108 "Dcache:\t\t%ukB\n", 109 "Dcache:\t\t%ukB\tline length:\t%dB\n",
109 cpuinfo.dcache_size >> 10); 110 cpuinfo.dcache_size >> 10,
110 else 111 cpuinfo.dcache_line_length);
112 if (cpuinfo.dcache_wb)
113 count += seq_printf(m, "\t\twrite-back\n");
114 else
115 count += seq_printf(m, "\t\twrite-through\n");
116 } else
111 count += seq_printf(m, "Dcache:\t\tno\n"); 117 count += seq_printf(m, "Dcache:\t\tno\n");
112 118
113 count += seq_printf(m, 119 count += seq_printf(m,
diff --git a/arch/microblaze/kernel/cpu/pvr.c b/arch/microblaze/kernel/cpu/pvr.c
index c9a4340ddd53..9bee9382bf74 100644
--- a/arch/microblaze/kernel/cpu/pvr.c
+++ b/arch/microblaze/kernel/cpu/pvr.c
@@ -45,7 +45,7 @@
45 45
46int cpu_has_pvr(void) 46int cpu_has_pvr(void)
47{ 47{
48 unsigned flags; 48 unsigned long flags;
49 unsigned pvr0; 49 unsigned pvr0;
50 50
51 local_save_flags(flags); 51 local_save_flags(flags);
diff --git a/arch/microblaze/kernel/dma.c b/arch/microblaze/kernel/dma.c
new file mode 100644
index 000000000000..9dcd90b5df55
--- /dev/null
+++ b/arch/microblaze/kernel/dma.c
@@ -0,0 +1,157 @@
1/*
2 * Copyright (C) 2009-2010 PetaLogix
3 * Copyright (C) 2006 Benjamin Herrenschmidt, IBM Corporation
4 *
5 * Provide default implementations of the DMA mapping callbacks for
6 * directly mapped busses.
7 */
8
9#include <linux/device.h>
10#include <linux/dma-mapping.h>
11#include <linux/gfp.h>
12#include <linux/dma-debug.h>
13#include <asm/bug.h>
14#include <asm/cacheflush.h>
15
16/*
17 * Generic direct DMA implementation
18 *
19 * This implementation supports a per-device offset that can be applied if
20 * the address at which memory is visible to devices is not 0. Platform code
21 * can set archdata.dma_data to an unsigned long holding the offset. By
22 * default the offset is PCI_DRAM_OFFSET.
23 */
24static inline void __dma_sync_page(unsigned long paddr, unsigned long offset,
25 size_t size, enum dma_data_direction direction)
26{
27 switch (direction) {
28 case DMA_TO_DEVICE:
29 flush_dcache_range(paddr + offset, paddr + offset + size);
30 break;
31 case DMA_FROM_DEVICE:
32 invalidate_dcache_range(paddr + offset, paddr + offset + size);
33 break;
34 default:
35 BUG();
36 }
37}
38
39static unsigned long get_dma_direct_offset(struct device *dev)
40{
41 if (likely(dev))
42 return (unsigned long)dev->archdata.dma_data;
43
44 return PCI_DRAM_OFFSET; /* FIXME Not sure if is correct */
45}
46
47#define NOT_COHERENT_CACHE
48
49static void *dma_direct_alloc_coherent(struct device *dev, size_t size,
50 dma_addr_t *dma_handle, gfp_t flag)
51{
52#ifdef NOT_COHERENT_CACHE
53 return consistent_alloc(flag, size, dma_handle);
54#else
55 void *ret;
56 struct page *page;
57 int node = dev_to_node(dev);
58
59 /* ignore region specifiers */
60 flag &= ~(__GFP_HIGHMEM);
61
62 page = alloc_pages_node(node, flag, get_order(size));
63 if (page == NULL)
64 return NULL;
65 ret = page_address(page);
66 memset(ret, 0, size);
67 *dma_handle = virt_to_phys(ret) + get_dma_direct_offset(dev);
68
69 return ret;
70#endif
71}
72
73static void dma_direct_free_coherent(struct device *dev, size_t size,
74 void *vaddr, dma_addr_t dma_handle)
75{
76#ifdef NOT_COHERENT_CACHE
77 consistent_free(size, vaddr);
78#else
79 free_pages((unsigned long)vaddr, get_order(size));
80#endif
81}
82
83static int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl,
84 int nents, enum dma_data_direction direction,
85 struct dma_attrs *attrs)
86{
87 struct scatterlist *sg;
88 int i;
89
90 /* FIXME this part of code is untested */
91 for_each_sg(sgl, sg, nents, i) {
92 sg->dma_address = sg_phys(sg) + get_dma_direct_offset(dev);
93 sg->dma_length = sg->length;
94 __dma_sync_page(page_to_phys(sg_page(sg)), sg->offset,
95 sg->length, direction);
96 }
97
98 return nents;
99}
100
101static void dma_direct_unmap_sg(struct device *dev, struct scatterlist *sg,
102 int nents, enum dma_data_direction direction,
103 struct dma_attrs *attrs)
104{
105}
106
107static int dma_direct_dma_supported(struct device *dev, u64 mask)
108{
109 return 1;
110}
111
112static inline dma_addr_t dma_direct_map_page(struct device *dev,
113 struct page *page,
114 unsigned long offset,
115 size_t size,
116 enum dma_data_direction direction,
117 struct dma_attrs *attrs)
118{
119 __dma_sync_page(page_to_phys(page), offset, size, direction);
120 return page_to_phys(page) + offset + get_dma_direct_offset(dev);
121}
122
123static inline void dma_direct_unmap_page(struct device *dev,
124 dma_addr_t dma_address,
125 size_t size,
126 enum dma_data_direction direction,
127 struct dma_attrs *attrs)
128{
129/* There is not necessary to do cache cleanup
130 *
131 * phys_to_virt is here because in __dma_sync_page is __virt_to_phys and
132 * dma_address is physical address
133 */
134 __dma_sync_page(dma_address, 0 , size, direction);
135}
136
137struct dma_map_ops dma_direct_ops = {
138 .alloc_coherent = dma_direct_alloc_coherent,
139 .free_coherent = dma_direct_free_coherent,
140 .map_sg = dma_direct_map_sg,
141 .unmap_sg = dma_direct_unmap_sg,
142 .dma_supported = dma_direct_dma_supported,
143 .map_page = dma_direct_map_page,
144 .unmap_page = dma_direct_unmap_page,
145};
146EXPORT_SYMBOL(dma_direct_ops);
147
148/* Number of entries preallocated for DMA-API debugging */
149#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16)
150
151static int __init dma_init(void)
152{
153 dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES);
154
155 return 0;
156}
157fs_initcall(dma_init);
diff --git a/arch/microblaze/kernel/entry-nommu.S b/arch/microblaze/kernel/entry-nommu.S
index 9083d85376a4..8cc18cd2cce6 100644
--- a/arch/microblaze/kernel/entry-nommu.S
+++ b/arch/microblaze/kernel/entry-nommu.S
@@ -122,7 +122,7 @@ ENTRY(_interrupt)
122 122
123ret_from_intr: 123ret_from_intr:
124 lwi r11, r1, PT_MODE 124 lwi r11, r1, PT_MODE
125 bneid r11, 3f 125 bneid r11, no_intr_resched
126 126
127 lwi r6, r31, TS_THREAD_INFO /* get thread info */ 127 lwi r6, r31, TS_THREAD_INFO /* get thread info */
128 lwi r19, r6, TI_FLAGS /* get flags in thread info */ 128 lwi r19, r6, TI_FLAGS /* get flags in thread info */
@@ -133,16 +133,18 @@ ret_from_intr:
133 bralid r15, schedule 133 bralid r15, schedule
134 nop 134 nop
1351: andi r11, r19, _TIF_SIGPENDING 1351: andi r11, r19, _TIF_SIGPENDING
136 beqid r11, no_intr_reshed 136 beqid r11, no_intr_resched
137 addk r5, r1, r0 137 addk r5, r1, r0
138 addk r7, r0, r0 138 addk r7, r0, r0
139 bralid r15, do_signal 139 bralid r15, do_signal
140 addk r6, r0, r0 140 addk r6, r0, r0
141 141
142no_intr_reshed: 142no_intr_resched:
143 /* Disable interrupts, we are now committed to the state restore */
144 disable_irq
145
143 /* save mode indicator */ 146 /* save mode indicator */
144 lwi r11, r1, PT_MODE 147 lwi r11, r1, PT_MODE
1453:
146 swi r11, r0, PER_CPU(KM) 148 swi r11, r0, PER_CPU(KM)
147 149
148 /* save r31 */ 150 /* save r31 */
@@ -208,8 +210,6 @@ ENTRY(_user_exception)
208 lwi r1, r1, TS_THREAD_INFO /* get the thread info */ 210 lwi r1, r1, TS_THREAD_INFO /* get the thread info */
209 /* calculate kernel stack pointer */ 211 /* calculate kernel stack pointer */
210 addik r1, r1, THREAD_SIZE - PT_SIZE 212 addik r1, r1, THREAD_SIZE - PT_SIZE
211 swi r11, r0, PER_CPU(R11_SAVE) /* temporarily save r11 */
212 lwi r11, r0, PER_CPU(KM) /* load mode indicator */
2132: 2132:
214 swi r11, r1, PT_MODE /* store the mode */ 214 swi r11, r1, PT_MODE /* store the mode */
215 lwi r11, r0, PER_CPU(R11_SAVE) /* reload r11 */ 215 lwi r11, r0, PER_CPU(R11_SAVE) /* reload r11 */
@@ -476,6 +476,8 @@ ENTRY(ret_from_fork)
476 nop 476 nop
477 477
478work_pending: 478work_pending:
479 enable_irq
480
479 andi r11, r19, _TIF_NEED_RESCHED 481 andi r11, r19, _TIF_NEED_RESCHED
480 beqi r11, 1f 482 beqi r11, 1f
481 bralid r15, schedule 483 bralid r15, schedule
diff --git a/arch/microblaze/kernel/entry.S b/arch/microblaze/kernel/entry.S
index e3ecb36dd554..c0ede25c5b99 100644
--- a/arch/microblaze/kernel/entry.S
+++ b/arch/microblaze/kernel/entry.S
@@ -31,6 +31,8 @@
31#include <linux/errno.h> 31#include <linux/errno.h>
32#include <asm/signal.h> 32#include <asm/signal.h>
33 33
34#undef DEBUG
35
34/* The size of a state save frame. */ 36/* The size of a state save frame. */
35#define STATE_SAVE_SIZE (PT_SIZE + STATE_SAVE_ARG_SPACE) 37#define STATE_SAVE_SIZE (PT_SIZE + STATE_SAVE_ARG_SPACE)
36 38
@@ -303,7 +305,7 @@ C_ENTRY(_user_exception):
303 swi r11, r1, PTO+PT_R1; /* Store user SP. */ 305 swi r11, r1, PTO+PT_R1; /* Store user SP. */
304 addi r11, r0, 1; 306 addi r11, r0, 1;
305 swi r11, r0, TOPHYS(PER_CPU(KM)); /* Now we're in kernel-mode. */ 307 swi r11, r0, TOPHYS(PER_CPU(KM)); /* Now we're in kernel-mode. */
3062: lwi r31, r0, TOPHYS(PER_CPU(CURRENT_SAVE)); /* get saved current */ 3082: lwi CURRENT_TASK, r0, TOPHYS(PER_CPU(CURRENT_SAVE));
307 /* Save away the syscall number. */ 309 /* Save away the syscall number. */
308 swi r12, r1, PTO+PT_R0; 310 swi r12, r1, PTO+PT_R0;
309 tovirt(r1,r1) 311 tovirt(r1,r1)
@@ -320,8 +322,7 @@ C_ENTRY(_user_exception):
320 rtid r11, 0 322 rtid r11, 0
321 nop 323 nop
3223: 3243:
323 add r11, r0, CURRENT_TASK /* Get current task ptr into r11 */ 325 lwi r11, CURRENT_TASK, TS_THREAD_INFO /* get thread info */
324 lwi r11, r11, TS_THREAD_INFO /* get thread info */
325 lwi r11, r11, TI_FLAGS /* get flags in thread info */ 326 lwi r11, r11, TI_FLAGS /* get flags in thread info */
326 andi r11, r11, _TIF_WORK_SYSCALL_MASK 327 andi r11, r11, _TIF_WORK_SYSCALL_MASK
327 beqi r11, 4f 328 beqi r11, 4f
@@ -352,10 +353,12 @@ C_ENTRY(_user_exception):
352 add r12, r12, r12; /* convert num -> ptr */ 353 add r12, r12, r12; /* convert num -> ptr */
353 add r12, r12, r12; 354 add r12, r12, r12;
354 355
356#ifdef DEBUG
355 /* Trac syscalls and stored them to r0_ram */ 357 /* Trac syscalls and stored them to r0_ram */
356 lwi r3, r12, 0x400 + r0_ram 358 lwi r3, r12, 0x400 + r0_ram
357 addi r3, r3, 1 359 addi r3, r3, 1
358 swi r3, r12, 0x400 + r0_ram 360 swi r3, r12, 0x400 + r0_ram
361#endif
359 362
360 # Find and jump into the syscall handler. 363 # Find and jump into the syscall handler.
361 lwi r12, r12, sys_call_table 364 lwi r12, r12, sys_call_table
@@ -378,60 +381,50 @@ C_ENTRY(ret_from_trap):
378/* See if returning to kernel mode, if so, skip resched &c. */ 381/* See if returning to kernel mode, if so, skip resched &c. */
379 bnei r11, 2f; 382 bnei r11, 2f;
380 383
384 swi r3, r1, PTO + PT_R3
385 swi r4, r1, PTO + PT_R4
386
381 /* We're returning to user mode, so check for various conditions that 387 /* We're returning to user mode, so check for various conditions that
382 * trigger rescheduling. */ 388 * trigger rescheduling. */
383 # FIXME: Restructure all these flag checks. 389 /* FIXME: Restructure all these flag checks. */
384 add r11, r0, CURRENT_TASK; /* Get current task ptr into r11 */ 390 lwi r11, CURRENT_TASK, TS_THREAD_INFO; /* get thread info */
385 lwi r11, r11, TS_THREAD_INFO; /* get thread info */
386 lwi r11, r11, TI_FLAGS; /* get flags in thread info */ 391 lwi r11, r11, TI_FLAGS; /* get flags in thread info */
387 andi r11, r11, _TIF_WORK_SYSCALL_MASK 392 andi r11, r11, _TIF_WORK_SYSCALL_MASK
388 beqi r11, 1f 393 beqi r11, 1f
389 394
390 swi r3, r1, PTO + PT_R3
391 swi r4, r1, PTO + PT_R4
392 brlid r15, do_syscall_trace_leave 395 brlid r15, do_syscall_trace_leave
393 addik r5, r1, PTO + PT_R0 396 addik r5, r1, PTO + PT_R0
394 lwi r3, r1, PTO + PT_R3
395 lwi r4, r1, PTO + PT_R4
3961: 3971:
397
398 /* We're returning to user mode, so check for various conditions that 398 /* We're returning to user mode, so check for various conditions that
399 * trigger rescheduling. */ 399 * trigger rescheduling. */
400 /* Get current task ptr into r11 */ 400 /* get thread info from current task */
401 add r11, r0, CURRENT_TASK; /* Get current task ptr into r11 */ 401 lwi r11, CURRENT_TASK, TS_THREAD_INFO;
402 lwi r11, r11, TS_THREAD_INFO; /* get thread info */
403 lwi r11, r11, TI_FLAGS; /* get flags in thread info */ 402 lwi r11, r11, TI_FLAGS; /* get flags in thread info */
404 andi r11, r11, _TIF_NEED_RESCHED; 403 andi r11, r11, _TIF_NEED_RESCHED;
405 beqi r11, 5f; 404 beqi r11, 5f;
406 405
407 swi r3, r1, PTO + PT_R3; /* store syscall result */
408 swi r4, r1, PTO + PT_R4;
409 bralid r15, schedule; /* Call scheduler */ 406 bralid r15, schedule; /* Call scheduler */
410 nop; /* delay slot */ 407 nop; /* delay slot */
411 lwi r3, r1, PTO + PT_R3; /* restore syscall result */
412 lwi r4, r1, PTO + PT_R4;
413 408
414 /* Maybe handle a signal */ 409 /* Maybe handle a signal */
4155: add r11, r0, CURRENT_TASK; /* Get current task ptr into r11 */ 4105: /* get thread info from current task*/
416 lwi r11, r11, TS_THREAD_INFO; /* get thread info */ 411 lwi r11, CURRENT_TASK, TS_THREAD_INFO;
417 lwi r11, r11, TI_FLAGS; /* get flags in thread info */ 412 lwi r11, r11, TI_FLAGS; /* get flags in thread info */
418 andi r11, r11, _TIF_SIGPENDING; 413 andi r11, r11, _TIF_SIGPENDING;
419 beqi r11, 1f; /* Signals to handle, handle them */ 414 beqi r11, 1f; /* Signals to handle, handle them */
420 415
421 swi r3, r1, PTO + PT_R3; /* store syscall result */
422 swi r4, r1, PTO + PT_R4;
423 la r5, r1, PTO; /* Arg 1: struct pt_regs *regs */ 416 la r5, r1, PTO; /* Arg 1: struct pt_regs *regs */
424 add r6, r0, r0; /* Arg 2: sigset_t *oldset */
425 addi r7, r0, 1; /* Arg 3: int in_syscall */ 417 addi r7, r0, 1; /* Arg 3: int in_syscall */
426 bralid r15, do_signal; /* Handle any signals */ 418 bralid r15, do_signal; /* Handle any signals */
427 nop; 419 add r6, r0, r0; /* Arg 2: sigset_t *oldset */
420
421/* Finally, return to user state. */
4221:
428 lwi r3, r1, PTO + PT_R3; /* restore syscall result */ 423 lwi r3, r1, PTO + PT_R3; /* restore syscall result */
429 lwi r4, r1, PTO + PT_R4; 424 lwi r4, r1, PTO + PT_R4;
430 425
431/* Finally, return to user state. */ 426 swi r0, r0, PER_CPU(KM); /* Now officially in user state. */
4321: swi r0, r0, PER_CPU(KM); /* Now officially in user state. */ 427 swi CURRENT_TASK, r0, PER_CPU(CURRENT_SAVE); /* save current */
433 add r11, r0, CURRENT_TASK; /* Get current task ptr into r11 */
434 swi r11, r0, PER_CPU(CURRENT_SAVE); /* save current */
435 VM_OFF; 428 VM_OFF;
436 tophys(r1,r1); 429 tophys(r1,r1);
437 RESTORE_REGS; 430 RESTORE_REGS;
@@ -496,17 +489,6 @@ C_ENTRY(sys_execve):
496 brid microblaze_execve; /* Do real work (tail-call).*/ 489 brid microblaze_execve; /* Do real work (tail-call).*/
497 nop; 490 nop;
498 491
499C_ENTRY(sys_rt_sigsuspend_wrapper):
500 swi r3, r1, PTO+PT_R3; /* restore saved r3, r4 registers */
501 swi r4, r1, PTO+PT_R4;
502 la r7, r1, PTO; /* add user context as 3rd arg */
503 brlid r15, sys_rt_sigsuspend; /* Do real work.*/
504 nop;
505 lwi r3, r1, PTO+PT_R3; /* restore saved r3, r4 registers */
506 lwi r4, r1, PTO+PT_R4;
507 bri ret_from_trap /* fall through will not work here due to align */
508 nop;
509
510C_ENTRY(sys_rt_sigreturn_wrapper): 492C_ENTRY(sys_rt_sigreturn_wrapper):
511 swi r3, r1, PTO+PT_R3; /* restore saved r3, r4 registers */ 493 swi r3, r1, PTO+PT_R3; /* restore saved r3, r4 registers */
512 swi r4, r1, PTO+PT_R4; 494 swi r4, r1, PTO+PT_R4;
@@ -572,7 +554,7 @@ C_ENTRY(sys_rt_sigreturn_wrapper):
572 swi r11, r1, PTO+PT_R1; /* Store user SP. */ \ 554 swi r11, r1, PTO+PT_R1; /* Store user SP. */ \
573 addi r11, r0, 1; \ 555 addi r11, r0, 1; \
574 swi r11, r0, TOPHYS(PER_CPU(KM)); /* Now we're in kernel-mode.*/\ 556 swi r11, r0, TOPHYS(PER_CPU(KM)); /* Now we're in kernel-mode.*/\
5752: lwi r31, r0, TOPHYS(PER_CPU(CURRENT_SAVE)); /* get saved current */\ 5572: lwi CURRENT_TASK, r0, TOPHYS(PER_CPU(CURRENT_SAVE)); \
576 /* Save away the syscall number. */ \ 558 /* Save away the syscall number. */ \
577 swi r0, r1, PTO+PT_R0; \ 559 swi r0, r1, PTO+PT_R0; \
578 tovirt(r1,r1) 560 tovirt(r1,r1)
@@ -680,9 +662,7 @@ C_ENTRY(ret_from_exc):
680 662
681 /* We're returning to user mode, so check for various conditions that 663 /* We're returning to user mode, so check for various conditions that
682 trigger rescheduling. */ 664 trigger rescheduling. */
683 /* Get current task ptr into r11 */ 665 lwi r11, CURRENT_TASK, TS_THREAD_INFO; /* get thread info */
684 add r11, r0, CURRENT_TASK; /* Get current task ptr into r11 */
685 lwi r11, r11, TS_THREAD_INFO; /* get thread info */
686 lwi r11, r11, TI_FLAGS; /* get flags in thread info */ 666 lwi r11, r11, TI_FLAGS; /* get flags in thread info */
687 andi r11, r11, _TIF_NEED_RESCHED; 667 andi r11, r11, _TIF_NEED_RESCHED;
688 beqi r11, 5f; 668 beqi r11, 5f;
@@ -692,8 +672,7 @@ C_ENTRY(ret_from_exc):
692 nop; /* delay slot */ 672 nop; /* delay slot */
693 673
694 /* Maybe handle a signal */ 674 /* Maybe handle a signal */
6955: add r11, r0, CURRENT_TASK; /* Get current task ptr into r11 */ 6755: lwi r11, CURRENT_TASK, TS_THREAD_INFO; /* get thread info */
696 lwi r11, r11, TS_THREAD_INFO; /* get thread info */
697 lwi r11, r11, TI_FLAGS; /* get flags in thread info */ 676 lwi r11, r11, TI_FLAGS; /* get flags in thread info */
698 andi r11, r11, _TIF_SIGPENDING; 677 andi r11, r11, _TIF_SIGPENDING;
699 beqi r11, 1f; /* Signals to handle, handle them */ 678 beqi r11, 1f; /* Signals to handle, handle them */
@@ -711,20 +690,14 @@ C_ENTRY(ret_from_exc):
711 * (in a possibly modified form) after do_signal returns. 690 * (in a possibly modified form) after do_signal returns.
712 * store return registers separately because this macros is use 691 * store return registers separately because this macros is use
713 * for others exceptions */ 692 * for others exceptions */
714 swi r3, r1, PTO + PT_R3;
715 swi r4, r1, PTO + PT_R4;
716 la r5, r1, PTO; /* Arg 1: struct pt_regs *regs */ 693 la r5, r1, PTO; /* Arg 1: struct pt_regs *regs */
717 add r6, r0, r0; /* Arg 2: sigset_t *oldset */
718 addi r7, r0, 0; /* Arg 3: int in_syscall */ 694 addi r7, r0, 0; /* Arg 3: int in_syscall */
719 bralid r15, do_signal; /* Handle any signals */ 695 bralid r15, do_signal; /* Handle any signals */
720 nop; 696 add r6, r0, r0; /* Arg 2: sigset_t *oldset */
721 lwi r3, r1, PTO+PT_R3; /* restore saved r3, r4 registers */
722 lwi r4, r1, PTO+PT_R4;
723 697
724/* Finally, return to user state. */ 698/* Finally, return to user state. */
7251: swi r0, r0, PER_CPU(KM); /* Now officially in user state. */ 6991: swi r0, r0, PER_CPU(KM); /* Now officially in user state. */
726 add r11, r0, CURRENT_TASK; /* Get current task ptr into r11 */ 700 swi CURRENT_TASK, r0, PER_CPU(CURRENT_SAVE); /* save current */
727 swi r11, r0, PER_CPU(CURRENT_SAVE); /* save current */
728 VM_OFF; 701 VM_OFF;
729 tophys(r1,r1); 702 tophys(r1,r1);
730 703
@@ -813,7 +786,7 @@ C_ENTRY(_interrupt):
813 swi r11, r0, TOPHYS(PER_CPU(KM)); 786 swi r11, r0, TOPHYS(PER_CPU(KM));
814 787
8152: 7882:
816 lwi r31, r0, TOPHYS(PER_CPU(CURRENT_SAVE)); 789 lwi CURRENT_TASK, r0, TOPHYS(PER_CPU(CURRENT_SAVE));
817 swi r0, r1, PTO + PT_R0; 790 swi r0, r1, PTO + PT_R0;
818 tovirt(r1,r1) 791 tovirt(r1,r1)
819 la r5, r1, PTO; 792 la r5, r1, PTO;
@@ -828,8 +801,7 @@ ret_from_irq:
828 lwi r11, r1, PTO + PT_MODE; 801 lwi r11, r1, PTO + PT_MODE;
829 bnei r11, 2f; 802 bnei r11, 2f;
830 803
831 add r11, r0, CURRENT_TASK; 804 lwi r11, CURRENT_TASK, TS_THREAD_INFO;
832 lwi r11, r11, TS_THREAD_INFO;
833 lwi r11, r11, TI_FLAGS; /* MS: get flags from thread info */ 805 lwi r11, r11, TI_FLAGS; /* MS: get flags from thread info */
834 andi r11, r11, _TIF_NEED_RESCHED; 806 andi r11, r11, _TIF_NEED_RESCHED;
835 beqi r11, 5f 807 beqi r11, 5f
@@ -837,8 +809,7 @@ ret_from_irq:
837 nop; /* delay slot */ 809 nop; /* delay slot */
838 810
839 /* Maybe handle a signal */ 811 /* Maybe handle a signal */
8405: add r11, r0, CURRENT_TASK; 8125: lwi r11, CURRENT_TASK, TS_THREAD_INFO; /* MS: get thread info */
841 lwi r11, r11, TS_THREAD_INFO; /* MS: get thread info */
842 lwi r11, r11, TI_FLAGS; /* get flags in thread info */ 813 lwi r11, r11, TI_FLAGS; /* get flags in thread info */
843 andi r11, r11, _TIF_SIGPENDING; 814 andi r11, r11, _TIF_SIGPENDING;
844 beqid r11, no_intr_resched 815 beqid r11, no_intr_resched
@@ -853,8 +824,7 @@ no_intr_resched:
853 /* Disable interrupts, we are now committed to the state restore */ 824 /* Disable interrupts, we are now committed to the state restore */
854 disable_irq 825 disable_irq
855 swi r0, r0, PER_CPU(KM); /* MS: Now officially in user state. */ 826 swi r0, r0, PER_CPU(KM); /* MS: Now officially in user state. */
856 add r11, r0, CURRENT_TASK; 827 swi CURRENT_TASK, r0, PER_CPU(CURRENT_SAVE);
857 swi r11, r0, PER_CPU(CURRENT_SAVE);
858 VM_OFF; 828 VM_OFF;
859 tophys(r1,r1); 829 tophys(r1,r1);
860 lwi r3, r1, PTO + PT_R3; /* MS: restore saved r3, r4 registers */ 830 lwi r3, r1, PTO + PT_R3; /* MS: restore saved r3, r4 registers */
@@ -864,7 +834,28 @@ no_intr_resched:
864 lwi r1, r1, PT_R1 - PT_SIZE; 834 lwi r1, r1, PT_R1 - PT_SIZE;
865 bri 6f; 835 bri 6f;
866/* MS: Return to kernel state. */ 836/* MS: Return to kernel state. */
8672: VM_OFF /* MS: turn off MMU */ 8372:
838#ifdef CONFIG_PREEMPT
839 lwi r11, CURRENT_TASK, TS_THREAD_INFO;
840 /* MS: get preempt_count from thread info */
841 lwi r5, r11, TI_PREEMPT_COUNT;
842 bgti r5, restore;
843
844 lwi r5, r11, TI_FLAGS; /* get flags in thread info */
845 andi r5, r5, _TIF_NEED_RESCHED;
846 beqi r5, restore /* if zero jump over */
847
848preempt:
849 /* interrupts are off that's why I am calling preempt_chedule_irq */
850 bralid r15, preempt_schedule_irq
851 nop
852 lwi r11, CURRENT_TASK, TS_THREAD_INFO; /* get thread info */
853 lwi r5, r11, TI_FLAGS; /* get flags in thread info */
854 andi r5, r5, _TIF_NEED_RESCHED;
855 bnei r5, preempt /* if non zero jump to resched */
856restore:
857#endif
858 VM_OFF /* MS: turn off MMU */
868 tophys(r1,r1) 859 tophys(r1,r1)
869 lwi r3, r1, PTO + PT_R3; /* MS: restore saved r3, r4 registers */ 860 lwi r3, r1, PTO + PT_R3; /* MS: restore saved r3, r4 registers */
870 lwi r4, r1, PTO + PT_R4; 861 lwi r4, r1, PTO + PT_R4;
@@ -926,7 +917,7 @@ C_ENTRY(_debug_exception):
926 swi r11, r1, PTO+PT_R1; /* Store user SP. */ 917 swi r11, r1, PTO+PT_R1; /* Store user SP. */
927 addi r11, r0, 1; 918 addi r11, r0, 1;
928 swi r11, r0, TOPHYS(PER_CPU(KM)); /* Now we're in kernel-mode. */ 919 swi r11, r0, TOPHYS(PER_CPU(KM)); /* Now we're in kernel-mode. */
9292: lwi r31, r0, TOPHYS(PER_CPU(CURRENT_SAVE)); /* get saved current */ 9202: lwi CURRENT_TASK, r0, TOPHYS(PER_CPU(CURRENT_SAVE));
930 /* Save away the syscall number. */ 921 /* Save away the syscall number. */
931 swi r0, r1, PTO+PT_R0; 922 swi r0, r1, PTO+PT_R0;
932 tovirt(r1,r1) 923 tovirt(r1,r1)
@@ -946,8 +937,7 @@ dbtrap_call: rtbd r11, 0;
946 bnei r11, 2f; 937 bnei r11, 2f;
947 938
948 /* Get current task ptr into r11 */ 939 /* Get current task ptr into r11 */
949 add r11, r0, CURRENT_TASK; /* Get current task ptr into r11 */ 940 lwi r11, CURRENT_TASK, TS_THREAD_INFO; /* get thread info */
950 lwi r11, r11, TS_THREAD_INFO; /* get thread info */
951 lwi r11, r11, TI_FLAGS; /* get flags in thread info */ 941 lwi r11, r11, TI_FLAGS; /* get flags in thread info */
952 andi r11, r11, _TIF_NEED_RESCHED; 942 andi r11, r11, _TIF_NEED_RESCHED;
953 beqi r11, 5f; 943 beqi r11, 5f;
@@ -960,8 +950,7 @@ dbtrap_call: rtbd r11, 0;
960 /* XXX m68knommu also checks TASK_STATE & TASK_COUNTER here. */ 950 /* XXX m68knommu also checks TASK_STATE & TASK_COUNTER here. */
961 951
962 /* Maybe handle a signal */ 952 /* Maybe handle a signal */
9635: add r11, r0, CURRENT_TASK; /* Get current task ptr into r11 */ 9535: lwi r11, CURRENT_TASK, TS_THREAD_INFO; /* get thread info */
964 lwi r11, r11, TS_THREAD_INFO; /* get thread info */
965 lwi r11, r11, TI_FLAGS; /* get flags in thread info */ 954 lwi r11, r11, TI_FLAGS; /* get flags in thread info */
966 andi r11, r11, _TIF_SIGPENDING; 955 andi r11, r11, _TIF_SIGPENDING;
967 beqi r11, 1f; /* Signals to handle, handle them */ 956 beqi r11, 1f; /* Signals to handle, handle them */
@@ -977,16 +966,14 @@ dbtrap_call: rtbd r11, 0;
977 (in a possibly modified form) after do_signal returns. */ 966 (in a possibly modified form) after do_signal returns. */
978 967
979 la r5, r1, PTO; /* Arg 1: struct pt_regs *regs */ 968 la r5, r1, PTO; /* Arg 1: struct pt_regs *regs */
980 add r6, r0, r0; /* Arg 2: sigset_t *oldset */
981 addi r7, r0, 0; /* Arg 3: int in_syscall */ 969 addi r7, r0, 0; /* Arg 3: int in_syscall */
982 bralid r15, do_signal; /* Handle any signals */ 970 bralid r15, do_signal; /* Handle any signals */
983 nop; 971 add r6, r0, r0; /* Arg 2: sigset_t *oldset */
984 972
985 973
986/* Finally, return to user state. */ 974/* Finally, return to user state. */
9871: swi r0, r0, PER_CPU(KM); /* Now officially in user state. */ 9751: swi r0, r0, PER_CPU(KM); /* Now officially in user state. */
988 add r11, r0, CURRENT_TASK; /* Get current task ptr into r11 */ 976 swi CURRENT_TASK, r0, PER_CPU(CURRENT_SAVE); /* save current */
989 swi r11, r0, PER_CPU(CURRENT_SAVE); /* save current */
990 VM_OFF; 977 VM_OFF;
991 tophys(r1,r1); 978 tophys(r1,r1);
992 979
@@ -1018,7 +1005,7 @@ DBTRAP_return: /* Make global symbol for debugging */
1018 1005
1019ENTRY(_switch_to) 1006ENTRY(_switch_to)
1020 /* prepare return value */ 1007 /* prepare return value */
1021 addk r3, r0, r31 1008 addk r3, r0, CURRENT_TASK
1022 1009
1023 /* save registers in cpu_context */ 1010 /* save registers in cpu_context */
1024 /* use r11 and r12, volatile registers, as temp register */ 1011 /* use r11 and r12, volatile registers, as temp register */
@@ -1062,10 +1049,10 @@ ENTRY(_switch_to)
1062 nop 1049 nop
1063 swi r12, r11, CC_FSR 1050 swi r12, r11, CC_FSR
1064 1051
1065 /* update r31, the current */ 1052 /* update r31, the current-give me pointer to task which will be next */
1066 lwi r31, r6, TI_TASK/* give me pointer to task which will be next */ 1053 lwi CURRENT_TASK, r6, TI_TASK
1067 /* stored it to current_save too */ 1054 /* stored it to current_save too */
1068 swi r31, r0, PER_CPU(CURRENT_SAVE) 1055 swi CURRENT_TASK, r0, PER_CPU(CURRENT_SAVE)
1069 1056
1070 /* get new process' cpu context and restore */ 1057 /* get new process' cpu context and restore */
1071 /* give me start where start context of next task */ 1058 /* give me start where start context of next task */
diff --git a/arch/microblaze/kernel/exceptions.c b/arch/microblaze/kernel/exceptions.c
index d9f70f83097f..02cbdfe5aa8d 100644
--- a/arch/microblaze/kernel/exceptions.c
+++ b/arch/microblaze/kernel/exceptions.c
@@ -121,7 +121,7 @@ asmlinkage void full_exception(struct pt_regs *regs, unsigned int type,
121 } 121 }
122 printk(KERN_WARNING "Divide by zero exception " \ 122 printk(KERN_WARNING "Divide by zero exception " \
123 "in kernel mode.\n"); 123 "in kernel mode.\n");
124 die("Divide by exception", regs, SIGBUS); 124 die("Divide by zero exception", regs, SIGBUS);
125 break; 125 break;
126 case MICROBLAZE_FPU_EXCEPTION: 126 case MICROBLAZE_FPU_EXCEPTION:
127 pr_debug(KERN_WARNING "FPU exception\n"); 127 pr_debug(KERN_WARNING "FPU exception\n");
diff --git a/arch/microblaze/kernel/ftrace.c b/arch/microblaze/kernel/ftrace.c
new file mode 100644
index 000000000000..515feb404555
--- /dev/null
+++ b/arch/microblaze/kernel/ftrace.c
@@ -0,0 +1,231 @@
1/*
2 * Ftrace support for Microblaze.
3 *
4 * Copyright (C) 2009 Michal Simek <monstr@monstr.eu>
5 * Copyright (C) 2009 PetaLogix
6 *
7 * Based on MIPS and PowerPC ftrace code
8 *
9 * This file is subject to the terms and conditions of the GNU General Public
10 * License. See the file "COPYING" in the main directory of this archive
11 * for more details.
12 */
13
14#include <asm/cacheflush.h>
15#include <linux/ftrace.h>
16
17#ifdef CONFIG_FUNCTION_GRAPH_TRACER
18/*
19 * Hook the return address and push it in the stack of return addrs
20 * in current thread info.
21 */
22void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr)
23{
24 unsigned long old;
25 int faulted, err;
26 struct ftrace_graph_ent trace;
27 unsigned long return_hooker = (unsigned long)
28 &return_to_handler;
29
30 if (unlikely(atomic_read(&current->tracing_graph_pause)))
31 return;
32
33 /*
34 * Protect against fault, even if it shouldn't
35 * happen. This tool is too much intrusive to
36 * ignore such a protection.
37 */
38 asm volatile(" 1: lwi %0, %2, 0; \
39 2: swi %3, %2, 0; \
40 addik %1, r0, 0; \
41 3: \
42 .section .fixup, \"ax\"; \
43 4: brid 3b; \
44 addik %1, r0, 1; \
45 .previous; \
46 .section __ex_table,\"a\"; \
47 .word 1b,4b; \
48 .word 2b,4b; \
49 .previous;" \
50 : "=&r" (old), "=r" (faulted)
51 : "r" (parent), "r" (return_hooker)
52 );
53
54 if (unlikely(faulted)) {
55 ftrace_graph_stop();
56 WARN_ON(1);
57 return;
58 }
59
60 err = ftrace_push_return_trace(old, self_addr, &trace.depth, 0);
61 if (err == -EBUSY) {
62 *parent = old;
63 return;
64 }
65
66 trace.func = self_addr;
67 /* Only trace if the calling function expects to */
68 if (!ftrace_graph_entry(&trace)) {
69 current->curr_ret_stack--;
70 *parent = old;
71 }
72}
73#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
74
75#ifdef CONFIG_DYNAMIC_FTRACE
76/* save value to addr - it is save to do it in asm */
77static int ftrace_modify_code(unsigned long addr, unsigned int value)
78{
79 int faulted = 0;
80
81 __asm__ __volatile__(" 1: swi %2, %1, 0; \
82 addik %0, r0, 0; \
83 2: \
84 .section .fixup, \"ax\"; \
85 3: brid 2b; \
86 addik %0, r0, 1; \
87 .previous; \
88 .section __ex_table,\"a\"; \
89 .word 1b,3b; \
90 .previous;" \
91 : "=r" (faulted)
92 : "r" (addr), "r" (value)
93 );
94
95 if (unlikely(faulted))
96 return -EFAULT;
97
98 return 0;
99}
100
101#define MICROBLAZE_NOP 0x80000000
102#define MICROBLAZE_BRI 0xb800000C
103
104static unsigned int recorded; /* if save was or not */
105static unsigned int imm; /* saving whole imm instruction */
106
107/* There are two approaches howto solve ftrace_make nop function - look below */
108#undef USE_FTRACE_NOP
109
110#ifdef USE_FTRACE_NOP
111static unsigned int bralid; /* saving whole bralid instruction */
112#endif
113
114int ftrace_make_nop(struct module *mod,
115 struct dyn_ftrace *rec, unsigned long addr)
116{
117 /* we have this part of code which we are working with
118 * b000c000 imm -16384
119 * b9fc8e30 bralid r15, -29136 // c0008e30 <_mcount>
120 * 80000000 or r0, r0, r0
121 *
122 * The first solution (!USE_FTRACE_NOP-could be called branch solution)
123 * b000c000 bri 12 (0xC - jump to any other instruction)
124 * b9fc8e30 bralid r15, -29136 // c0008e30 <_mcount>
125 * 80000000 or r0, r0, r0
126 * any other instruction
127 *
128 * The second solution (USE_FTRACE_NOP) - no jump just nops
129 * 80000000 or r0, r0, r0
130 * 80000000 or r0, r0, r0
131 * 80000000 or r0, r0, r0
132 */
133 int ret = 0;
134
135 if (recorded == 0) {
136 recorded = 1;
137 imm = *(unsigned int *)rec->ip;
138 pr_debug("%s: imm:0x%x\n", __func__, imm);
139#ifdef USE_FTRACE_NOP
140 bralid = *(unsigned int *)(rec->ip + 4);
141 pr_debug("%s: bralid 0x%x\n", __func__, bralid);
142#endif /* USE_FTRACE_NOP */
143 }
144
145#ifdef USE_FTRACE_NOP
146 ret = ftrace_modify_code(rec->ip, MICROBLAZE_NOP);
147 ret += ftrace_modify_code(rec->ip + 4, MICROBLAZE_NOP);
148#else /* USE_FTRACE_NOP */
149 ret = ftrace_modify_code(rec->ip, MICROBLAZE_BRI);
150#endif /* USE_FTRACE_NOP */
151 return ret;
152}
153
154/* I believe that first is called ftrace_make_nop before this function */
155int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
156{
157 int ret;
158 pr_debug("%s: addr:0x%x, rec->ip: 0x%x, imm:0x%x\n",
159 __func__, (unsigned int)addr, (unsigned int)rec->ip, imm);
160 ret = ftrace_modify_code(rec->ip, imm);
161#ifdef USE_FTRACE_NOP
162 pr_debug("%s: bralid:0x%x\n", __func__, bralid);
163 ret += ftrace_modify_code(rec->ip + 4, bralid);
164#endif /* USE_FTRACE_NOP */
165 return ret;
166}
167
168int __init ftrace_dyn_arch_init(void *data)
169{
170 /* The return code is retured via data */
171 *(unsigned long *)data = 0;
172
173 return 0;
174}
175
176int ftrace_update_ftrace_func(ftrace_func_t func)
177{
178 unsigned long ip = (unsigned long)(&ftrace_call);
179 unsigned int upper = (unsigned int)func;
180 unsigned int lower = (unsigned int)func;
181 int ret = 0;
182
183 /* create proper saving to ftrace_call poll */
184 upper = 0xb0000000 + (upper >> 16); /* imm func_upper */
185 lower = 0x32800000 + (lower & 0xFFFF); /* addik r20, r0, func_lower */
186
187 pr_debug("%s: func=0x%x, ip=0x%x, upper=0x%x, lower=0x%x\n",
188 __func__, (unsigned int)func, (unsigned int)ip, upper, lower);
189
190 /* save upper and lower code */
191 ret = ftrace_modify_code(ip, upper);
192 ret += ftrace_modify_code(ip + 4, lower);
193
194 /* We just need to replace the rtsd r15, 8 with NOP */
195 ret += ftrace_modify_code((unsigned long)&ftrace_caller,
196 MICROBLAZE_NOP);
197
198 /* All changes are done - lets do caches consistent */
199 flush_icache();
200 return ret;
201}
202
203#ifdef CONFIG_FUNCTION_GRAPH_TRACER
204unsigned int old_jump; /* saving place for jump instruction */
205
206int ftrace_enable_ftrace_graph_caller(void)
207{
208 unsigned int ret;
209 unsigned long ip = (unsigned long)(&ftrace_call_graph);
210
211 old_jump = *(unsigned int *)ip; /* save jump over instruction */
212 ret = ftrace_modify_code(ip, MICROBLAZE_NOP);
213 flush_icache();
214
215 pr_debug("%s: Replace instruction: 0x%x\n", __func__, old_jump);
216 return ret;
217}
218
219int ftrace_disable_ftrace_graph_caller(void)
220{
221 unsigned int ret;
222 unsigned long ip = (unsigned long)(&ftrace_call_graph);
223
224 ret = ftrace_modify_code(ip, old_jump);
225 flush_icache();
226
227 pr_debug("%s\n", __func__);
228 return ret;
229}
230#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
231#endif /* CONFIG_DYNAMIC_FTRACE */
diff --git a/arch/microblaze/kernel/head.S b/arch/microblaze/kernel/head.S
index 697ce3007f30..1bf739888260 100644
--- a/arch/microblaze/kernel/head.S
+++ b/arch/microblaze/kernel/head.S
@@ -28,10 +28,11 @@
28 * for more details. 28 * for more details.
29 */ 29 */
30 30
31#include <linux/init.h>
31#include <linux/linkage.h> 32#include <linux/linkage.h>
32#include <asm/thread_info.h> 33#include <asm/thread_info.h>
33#include <asm/page.h> 34#include <asm/page.h>
34#include <asm/prom.h> /* for OF_DT_HEADER */ 35#include <linux/of_fdt.h> /* for OF_DT_HEADER */
35 36
36#ifdef CONFIG_MMU 37#ifdef CONFIG_MMU
37#include <asm/setup.h> /* COMMAND_LINE_SIZE */ 38#include <asm/setup.h> /* COMMAND_LINE_SIZE */
@@ -49,8 +50,14 @@ swapper_pg_dir:
49 50
50#endif /* CONFIG_MMU */ 51#endif /* CONFIG_MMU */
51 52
52 .text 53 __HEAD
53ENTRY(_start) 54ENTRY(_start)
55#if CONFIG_KERNEL_BASE_ADDR == 0
56 brai TOPHYS(real_start)
57 .org 0x100
58real_start:
59#endif
60
54 mfs r1, rmsr 61 mfs r1, rmsr
55 andi r1, r1, ~2 62 andi r1, r1, ~2
56 mts rmsr, r1 63 mts rmsr, r1
@@ -99,8 +106,8 @@ no_fdt_arg:
99 tophys(r4,r4) /* convert to phys address */ 106 tophys(r4,r4) /* convert to phys address */
100 ori r3, r0, COMMAND_LINE_SIZE - 1 /* number of loops */ 107 ori r3, r0, COMMAND_LINE_SIZE - 1 /* number of loops */
101_copy_command_line: 108_copy_command_line:
102 lbu r7, r5, r6 /* r7=r5+r6 - r5 contain pointer to command line */ 109 lbu r2, r5, r6 /* r2=r5+r6 - r5 contain pointer to command line */
103 sb r7, r4, r6 /* addr[r4+r6]= r7*/ 110 sb r2, r4, r6 /* addr[r4+r6]= r2*/
104 addik r6, r6, 1 /* increment counting */ 111 addik r6, r6, 1 /* increment counting */
105 bgtid r3, _copy_command_line /* loop for all entries */ 112 bgtid r3, _copy_command_line /* loop for all entries */
106 addik r3, r3, -1 /* descrement loop */ 113 addik r3, r3, -1 /* descrement loop */
@@ -128,7 +135,7 @@ _copy_bram:
128 * virtual to physical. 135 * virtual to physical.
129 */ 136 */
130 nop 137 nop
131 addik r3, r0, 63 /* Invalidate all TLB entries */ 138 addik r3, r0, MICROBLAZE_TLB_SIZE -1 /* Invalidate all TLB entries */
132_invalidate: 139_invalidate:
133 mts rtlbx, r3 140 mts rtlbx, r3
134 mts rtlbhi, r0 /* flush: ensure V is clear */ 141 mts rtlbhi, r0 /* flush: ensure V is clear */
@@ -136,6 +143,11 @@ _invalidate:
136 addik r3, r3, -1 143 addik r3, r3, -1
137 /* sync */ 144 /* sync */
138 145
146 /* Setup the kernel PID */
147 mts rpid,r0 /* Load the kernel PID */
148 nop
149 bri 4
150
139 /* 151 /*
140 * We should still be executing code at physical address area 152 * We should still be executing code at physical address area
141 * RAM_BASEADDR at this point. However, kernel code is at 153 * RAM_BASEADDR at this point. However, kernel code is at
@@ -146,10 +158,6 @@ _invalidate:
146 addik r3,r0, CONFIG_KERNEL_START /* Load the kernel virtual address */ 158 addik r3,r0, CONFIG_KERNEL_START /* Load the kernel virtual address */
147 tophys(r4,r3) /* Load the kernel physical address */ 159 tophys(r4,r3) /* Load the kernel physical address */
148 160
149 mts rpid,r0 /* Load the kernel PID */
150 nop
151 bri 4
152
153 /* 161 /*
154 * Configure and load two entries into TLB slots 0 and 1. 162 * Configure and load two entries into TLB slots 0 and 1.
155 * In case we are pinning TLBs, these are reserved in by the 163 * In case we are pinning TLBs, these are reserved in by the
diff --git a/arch/microblaze/kernel/heartbeat.c b/arch/microblaze/kernel/heartbeat.c
index 1bdf20222b92..522751737cfa 100644
--- a/arch/microblaze/kernel/heartbeat.c
+++ b/arch/microblaze/kernel/heartbeat.c
@@ -45,6 +45,7 @@ void heartbeat(void)
45void setup_heartbeat(void) 45void setup_heartbeat(void)
46{ 46{
47 struct device_node *gpio = NULL; 47 struct device_node *gpio = NULL;
48 int *prop;
48 int j; 49 int j;
49 char *gpio_list[] = { 50 char *gpio_list[] = {
50 "xlnx,xps-gpio-1.00.a", 51 "xlnx,xps-gpio-1.00.a",
@@ -58,10 +59,14 @@ void setup_heartbeat(void)
58 break; 59 break;
59 } 60 }
60 61
61 base_addr = *(int *) of_get_property(gpio, "reg", NULL); 62 if (gpio) {
62 base_addr = (unsigned long) ioremap(base_addr, PAGE_SIZE); 63 base_addr = *(int *) of_get_property(gpio, "reg", NULL);
63 printk(KERN_NOTICE "Heartbeat GPIO at 0x%x\n", base_addr); 64 base_addr = (unsigned long) ioremap(base_addr, PAGE_SIZE);
65 printk(KERN_NOTICE "Heartbeat GPIO at 0x%x\n", base_addr);
64 66
65 if (*(int *) of_get_property(gpio, "xlnx,is-bidir", NULL)) 67 /* GPIO is configured as output */
66 out_be32(base_addr + 4, 0); /* GPIO is configured as output */ 68 prop = (int *) of_get_property(gpio, "xlnx,is-bidir", NULL);
69 if (prop)
70 out_be32(base_addr + 4, 0);
71 }
67} 72}
diff --git a/arch/microblaze/kernel/hw_exception_handler.S b/arch/microblaze/kernel/hw_exception_handler.S
index 2b86c03aa841..995a2123635b 100644
--- a/arch/microblaze/kernel/hw_exception_handler.S
+++ b/arch/microblaze/kernel/hw_exception_handler.S
@@ -313,13 +313,13 @@ _hw_exception_handler:
313 mfs r5, rmsr; 313 mfs r5, rmsr;
314 nop 314 nop
315 swi r5, r1, 0; 315 swi r5, r1, 0;
316 mfs r3, resr 316 mfs r4, resr
317 nop 317 nop
318 mfs r4, rear; 318 mfs r3, rear;
319 nop 319 nop
320 320
321#ifndef CONFIG_MMU 321#ifndef CONFIG_MMU
322 andi r5, r3, 0x1000; /* Check ESR[DS] */ 322 andi r5, r4, 0x1000; /* Check ESR[DS] */
323 beqi r5, not_in_delay_slot; /* Branch if ESR[DS] not set */ 323 beqi r5, not_in_delay_slot; /* Branch if ESR[DS] not set */
324 mfs r17, rbtr; /* ESR[DS] set - return address in BTR */ 324 mfs r17, rbtr; /* ESR[DS] set - return address in BTR */
325 nop 325 nop
@@ -327,13 +327,14 @@ not_in_delay_slot:
327 swi r17, r1, PT_R17 327 swi r17, r1, PT_R17
328#endif 328#endif
329 329
330 andi r5, r3, 0x1F; /* Extract ESR[EXC] */ 330 andi r5, r4, 0x1F; /* Extract ESR[EXC] */
331 331
332#ifdef CONFIG_MMU 332#ifdef CONFIG_MMU
333 /* Calculate exception vector offset = r5 << 2 */ 333 /* Calculate exception vector offset = r5 << 2 */
334 addk r6, r5, r5; /* << 1 */ 334 addk r6, r5, r5; /* << 1 */
335 addk r6, r6, r6; /* << 2 */ 335 addk r6, r6, r6; /* << 2 */
336 336
337#ifdef DEBUG
337/* counting which exception happen */ 338/* counting which exception happen */
338 lwi r5, r0, 0x200 + TOPHYS(r0_ram) 339 lwi r5, r0, 0x200 + TOPHYS(r0_ram)
339 addi r5, r5, 1 340 addi r5, r5, 1
@@ -341,6 +342,7 @@ not_in_delay_slot:
341 lwi r5, r6, 0x200 + TOPHYS(r0_ram) 342 lwi r5, r6, 0x200 + TOPHYS(r0_ram)
342 addi r5, r5, 1 343 addi r5, r5, 1
343 swi r5, r6, 0x200 + TOPHYS(r0_ram) 344 swi r5, r6, 0x200 + TOPHYS(r0_ram)
345#endif
344/* end */ 346/* end */
345 /* Load the HW Exception vector */ 347 /* Load the HW Exception vector */
346 lwi r6, r6, TOPHYS(_MB_HW_ExceptionVectorTable) 348 lwi r6, r6, TOPHYS(_MB_HW_ExceptionVectorTable)
@@ -376,7 +378,7 @@ handle_other_ex: /* Handle Other exceptions here */
376 swi r18, r1, PT_R18 378 swi r18, r1, PT_R18
377 379
378 or r5, r1, r0 380 or r5, r1, r0
379 andi r6, r3, 0x1F; /* Load ESR[EC] */ 381 andi r6, r4, 0x1F; /* Load ESR[EC] */
380 lwi r7, r0, PER_CPU(KM) /* MS: saving current kernel mode to regs */ 382 lwi r7, r0, PER_CPU(KM) /* MS: saving current kernel mode to regs */
381 swi r7, r1, PT_MODE 383 swi r7, r1, PT_MODE
382 mfs r7, rfsr 384 mfs r7, rfsr
@@ -426,11 +428,11 @@ handle_other_ex: /* Handle Other exceptions here */
426 */ 428 */
427handle_unaligned_ex: 429handle_unaligned_ex:
428 /* Working registers already saved: R3, R4, R5, R6 430 /* Working registers already saved: R3, R4, R5, R6
429 * R3 = ESR 431 * R4 = ESR
430 * R4 = EAR 432 * R3 = EAR
431 */ 433 */
432#ifdef CONFIG_MMU 434#ifdef CONFIG_MMU
433 andi r6, r3, 0x1000 /* Check ESR[DS] */ 435 andi r6, r4, 0x1000 /* Check ESR[DS] */
434 beqi r6, _no_delayslot /* Branch if ESR[DS] not set */ 436 beqi r6, _no_delayslot /* Branch if ESR[DS] not set */
435 mfs r17, rbtr; /* ESR[DS] set - return address in BTR */ 437 mfs r17, rbtr; /* ESR[DS] set - return address in BTR */
436 nop 438 nop
@@ -439,7 +441,7 @@ _no_delayslot:
439 RESTORE_STATE; 441 RESTORE_STATE;
440 bri unaligned_data_trap 442 bri unaligned_data_trap
441#endif 443#endif
442 andi r6, r3, 0x3E0; /* Mask and extract the register operand */ 444 andi r6, r4, 0x3E0; /* Mask and extract the register operand */
443 srl r6, r6; /* r6 >> 5 */ 445 srl r6, r6; /* r6 >> 5 */
444 srl r6, r6; 446 srl r6, r6;
445 srl r6, r6; 447 srl r6, r6;
@@ -448,33 +450,33 @@ _no_delayslot:
448 /* Store the register operand in a temporary location */ 450 /* Store the register operand in a temporary location */
449 sbi r6, r0, TOPHYS(ex_reg_op); 451 sbi r6, r0, TOPHYS(ex_reg_op);
450 452
451 andi r6, r3, 0x400; /* Extract ESR[S] */ 453 andi r6, r4, 0x400; /* Extract ESR[S] */
452 bnei r6, ex_sw; 454 bnei r6, ex_sw;
453ex_lw: 455ex_lw:
454 andi r6, r3, 0x800; /* Extract ESR[W] */ 456 andi r6, r4, 0x800; /* Extract ESR[W] */
455 beqi r6, ex_lhw; 457 beqi r6, ex_lhw;
456 lbui r5, r4, 0; /* Exception address in r4 */ 458 lbui r5, r3, 0; /* Exception address in r3 */
457 /* Load a word, byte-by-byte from destination address 459 /* Load a word, byte-by-byte from destination address
458 and save it in tmp space */ 460 and save it in tmp space */
459 sbi r5, r0, TOPHYS(ex_tmp_data_loc_0); 461 sbi r5, r0, TOPHYS(ex_tmp_data_loc_0);
460 lbui r5, r4, 1; 462 lbui r5, r3, 1;
461 sbi r5, r0, TOPHYS(ex_tmp_data_loc_1); 463 sbi r5, r0, TOPHYS(ex_tmp_data_loc_1);
462 lbui r5, r4, 2; 464 lbui r5, r3, 2;
463 sbi r5, r0, TOPHYS(ex_tmp_data_loc_2); 465 sbi r5, r0, TOPHYS(ex_tmp_data_loc_2);
464 lbui r5, r4, 3; 466 lbui r5, r3, 3;
465 sbi r5, r0, TOPHYS(ex_tmp_data_loc_3); 467 sbi r5, r0, TOPHYS(ex_tmp_data_loc_3);
466 /* Get the destination register value into r3 */ 468 /* Get the destination register value into r4 */
467 lwi r3, r0, TOPHYS(ex_tmp_data_loc_0); 469 lwi r4, r0, TOPHYS(ex_tmp_data_loc_0);
468 bri ex_lw_tail; 470 bri ex_lw_tail;
469ex_lhw: 471ex_lhw:
470 lbui r5, r4, 0; /* Exception address in r4 */ 472 lbui r5, r3, 0; /* Exception address in r3 */
471 /* Load a half-word, byte-by-byte from destination 473 /* Load a half-word, byte-by-byte from destination
472 address and save it in tmp space */ 474 address and save it in tmp space */
473 sbi r5, r0, TOPHYS(ex_tmp_data_loc_0); 475 sbi r5, r0, TOPHYS(ex_tmp_data_loc_0);
474 lbui r5, r4, 1; 476 lbui r5, r3, 1;
475 sbi r5, r0, TOPHYS(ex_tmp_data_loc_1); 477 sbi r5, r0, TOPHYS(ex_tmp_data_loc_1);
476 /* Get the destination register value into r3 */ 478 /* Get the destination register value into r4 */
477 lhui r3, r0, TOPHYS(ex_tmp_data_loc_0); 479 lhui r4, r0, TOPHYS(ex_tmp_data_loc_0);
478ex_lw_tail: 480ex_lw_tail:
479 /* Get the destination register number into r5 */ 481 /* Get the destination register number into r5 */
480 lbui r5, r0, TOPHYS(ex_reg_op); 482 lbui r5, r0, TOPHYS(ex_reg_op);
@@ -502,25 +504,25 @@ ex_sw_tail:
502 andi r6, r6, 0x800; /* Extract ESR[W] */ 504 andi r6, r6, 0x800; /* Extract ESR[W] */
503 beqi r6, ex_shw; 505 beqi r6, ex_shw;
504 /* Get the word - delay slot */ 506 /* Get the word - delay slot */
505 swi r3, r0, TOPHYS(ex_tmp_data_loc_0); 507 swi r4, r0, TOPHYS(ex_tmp_data_loc_0);
506 /* Store the word, byte-by-byte into destination address */ 508 /* Store the word, byte-by-byte into destination address */
507 lbui r3, r0, TOPHYS(ex_tmp_data_loc_0); 509 lbui r4, r0, TOPHYS(ex_tmp_data_loc_0);
508 sbi r3, r4, 0; 510 sbi r4, r3, 0;
509 lbui r3, r0, TOPHYS(ex_tmp_data_loc_1); 511 lbui r4, r0, TOPHYS(ex_tmp_data_loc_1);
510 sbi r3, r4, 1; 512 sbi r4, r3, 1;
511 lbui r3, r0, TOPHYS(ex_tmp_data_loc_2); 513 lbui r4, r0, TOPHYS(ex_tmp_data_loc_2);
512 sbi r3, r4, 2; 514 sbi r4, r3, 2;
513 lbui r3, r0, TOPHYS(ex_tmp_data_loc_3); 515 lbui r4, r0, TOPHYS(ex_tmp_data_loc_3);
514 sbi r3, r4, 3; 516 sbi r4, r3, 3;
515 bri ex_handler_done; 517 bri ex_handler_done;
516 518
517ex_shw: 519ex_shw:
518 /* Store the lower half-word, byte-by-byte into destination address */ 520 /* Store the lower half-word, byte-by-byte into destination address */
519 swi r3, r0, TOPHYS(ex_tmp_data_loc_0); 521 swi r4, r0, TOPHYS(ex_tmp_data_loc_0);
520 lbui r3, r0, TOPHYS(ex_tmp_data_loc_2); 522 lbui r4, r0, TOPHYS(ex_tmp_data_loc_2);
521 sbi r3, r4, 0; 523 sbi r4, r3, 0;
522 lbui r3, r0, TOPHYS(ex_tmp_data_loc_3); 524 lbui r4, r0, TOPHYS(ex_tmp_data_loc_3);
523 sbi r3, r4, 1; 525 sbi r4, r3, 1;
524ex_sw_end: /* Exception handling of store word, ends. */ 526ex_sw_end: /* Exception handling of store word, ends. */
525 527
526ex_handler_done: 528ex_handler_done:
@@ -560,21 +562,16 @@ ex_handler_done:
560 */ 562 */
561 mfs r11, rpid 563 mfs r11, rpid
562 nop 564 nop
563 bri 4
564 mfs r3, rear /* Get faulting address */
565 nop
566 /* If we are faulting a kernel address, we have to use the 565 /* If we are faulting a kernel address, we have to use the
567 * kernel page tables. 566 * kernel page tables.
568 */ 567 */
569 ori r4, r0, CONFIG_KERNEL_START 568 ori r5, r0, CONFIG_KERNEL_START
570 cmpu r4, r3, r4 569 cmpu r5, r3, r5
571 bgti r4, ex3 570 bgti r5, ex3
572 /* First, check if it was a zone fault (which means a user 571 /* First, check if it was a zone fault (which means a user
573 * tried to access a kernel or read-protected page - always 572 * tried to access a kernel or read-protected page - always
574 * a SEGV). All other faults here must be stores, so no 573 * a SEGV). All other faults here must be stores, so no
575 * need to check ESR_S as well. */ 574 * need to check ESR_S as well. */
576 mfs r4, resr
577 nop
578 andi r4, r4, 0x800 /* ESR_Z - zone protection */ 575 andi r4, r4, 0x800 /* ESR_Z - zone protection */
579 bnei r4, ex2 576 bnei r4, ex2
580 577
@@ -589,8 +586,6 @@ ex_handler_done:
589 * tried to access a kernel or read-protected page - always 586 * tried to access a kernel or read-protected page - always
590 * a SEGV). All other faults here must be stores, so no 587 * a SEGV). All other faults here must be stores, so no
591 * need to check ESR_S as well. */ 588 * need to check ESR_S as well. */
592 mfs r4, resr
593 nop
594 andi r4, r4, 0x800 /* ESR_Z */ 589 andi r4, r4, 0x800 /* ESR_Z */
595 bnei r4, ex2 590 bnei r4, ex2
596 /* get current task address */ 591 /* get current task address */
@@ -665,8 +660,6 @@ ex_handler_done:
665 * R3 = ESR 660 * R3 = ESR
666 */ 661 */
667 662
668 mfs r3, rear /* Get faulting address */
669 nop
670 RESTORE_STATE; 663 RESTORE_STATE;
671 bri page_fault_instr_trap 664 bri page_fault_instr_trap
672 665
@@ -677,18 +670,15 @@ ex_handler_done:
677 */ 670 */
678 handle_data_tlb_miss_exception: 671 handle_data_tlb_miss_exception:
679 /* Working registers already saved: R3, R4, R5, R6 672 /* Working registers already saved: R3, R4, R5, R6
680 * R3 = ESR 673 * R3 = EAR, R4 = ESR
681 */ 674 */
682 mfs r11, rpid 675 mfs r11, rpid
683 nop 676 nop
684 bri 4
685 mfs r3, rear /* Get faulting address */
686 nop
687 677
688 /* If we are faulting a kernel address, we have to use the 678 /* If we are faulting a kernel address, we have to use the
689 * kernel page tables. */ 679 * kernel page tables. */
690 ori r4, r0, CONFIG_KERNEL_START 680 ori r6, r0, CONFIG_KERNEL_START
691 cmpu r4, r3, r4 681 cmpu r4, r3, r6
692 bgti r4, ex5 682 bgti r4, ex5
693 ori r4, r0, swapper_pg_dir 683 ori r4, r0, swapper_pg_dir
694 mts rpid, r0 /* TLB will have 0 TID */ 684 mts rpid, r0 /* TLB will have 0 TID */
@@ -731,9 +721,8 @@ ex_handler_done:
731 * Many of these bits are software only. Bits we don't set 721 * Many of these bits are software only. Bits we don't set
732 * here we (properly should) assume have the appropriate value. 722 * here we (properly should) assume have the appropriate value.
733 */ 723 */
724 brid finish_tlb_load
734 andni r4, r4, 0x0ce2 /* Make sure 20, 21 are zero */ 725 andni r4, r4, 0x0ce2 /* Make sure 20, 21 are zero */
735
736 bri finish_tlb_load
737 ex7: 726 ex7:
738 /* The bailout. Restore registers to pre-exception conditions 727 /* The bailout. Restore registers to pre-exception conditions
739 * and call the heavyweights to help us out. 728 * and call the heavyweights to help us out.
@@ -754,9 +743,6 @@ ex_handler_done:
754 */ 743 */
755 mfs r11, rpid 744 mfs r11, rpid
756 nop 745 nop
757 bri 4
758 mfs r3, rear /* Get faulting address */
759 nop
760 746
761 /* If we are faulting a kernel address, we have to use the 747 /* If we are faulting a kernel address, we have to use the
762 * kernel page tables. 748 * kernel page tables.
@@ -792,7 +778,7 @@ ex_handler_done:
792 lwi r4, r5, 0 /* Get Linux PTE */ 778 lwi r4, r5, 0 /* Get Linux PTE */
793 779
794 andi r6, r4, _PAGE_PRESENT 780 andi r6, r4, _PAGE_PRESENT
795 beqi r6, ex7 781 beqi r6, ex10
796 782
797 ori r4, r4, _PAGE_ACCESSED 783 ori r4, r4, _PAGE_ACCESSED
798 swi r4, r5, 0 784 swi r4, r5, 0
@@ -805,9 +791,8 @@ ex_handler_done:
805 * Many of these bits are software only. Bits we don't set 791 * Many of these bits are software only. Bits we don't set
806 * here we (properly should) assume have the appropriate value. 792 * here we (properly should) assume have the appropriate value.
807 */ 793 */
794 brid finish_tlb_load
808 andni r4, r4, 0x0ce2 /* Make sure 20, 21 are zero */ 795 andni r4, r4, 0x0ce2 /* Make sure 20, 21 are zero */
809
810 bri finish_tlb_load
811 ex10: 796 ex10:
812 /* The bailout. Restore registers to pre-exception conditions 797 /* The bailout. Restore registers to pre-exception conditions
813 * and call the heavyweights to help us out. 798 * and call the heavyweights to help us out.
@@ -837,9 +822,9 @@ ex_handler_done:
837 andi r5, r5, (MICROBLAZE_TLB_SIZE-1) 822 andi r5, r5, (MICROBLAZE_TLB_SIZE-1)
838 ori r6, r0, 1 823 ori r6, r0, 1
839 cmp r31, r5, r6 824 cmp r31, r5, r6
840 blti r31, sem 825 blti r31, ex12
841 addik r5, r6, 1 826 addik r5, r6, 1
842 sem: 827 ex12:
843 /* MS: save back current TLB index */ 828 /* MS: save back current TLB index */
844 swi r5, r0, TOPHYS(tlb_index) 829 swi r5, r0, TOPHYS(tlb_index)
845 830
@@ -859,7 +844,6 @@ ex_handler_done:
859 nop 844 nop
860 845
861 /* Done...restore registers and get out of here. */ 846 /* Done...restore registers and get out of here. */
862 ex12:
863 mts rpid, r11 847 mts rpid, r11
864 nop 848 nop
865 bri 4 849 bri 4
diff --git a/arch/microblaze/kernel/intc.c b/arch/microblaze/kernel/intc.c
index 6eea6f92b84e..03172c1da770 100644
--- a/arch/microblaze/kernel/intc.c
+++ b/arch/microblaze/kernel/intc.c
@@ -42,8 +42,16 @@ unsigned int nr_irq;
42 42
43static void intc_enable_or_unmask(unsigned int irq) 43static void intc_enable_or_unmask(unsigned int irq)
44{ 44{
45 unsigned long mask = 1 << irq;
45 pr_debug("enable_or_unmask: %d\n", irq); 46 pr_debug("enable_or_unmask: %d\n", irq);
46 out_be32(INTC_BASE + SIE, 1 << irq); 47 out_be32(INTC_BASE + SIE, mask);
48
49 /* ack level irqs because they can't be acked during
50 * ack function since the handle_level_irq function
51 * acks the irq before calling the interrupt handler
52 */
53 if (irq_desc[irq].status & IRQ_LEVEL)
54 out_be32(INTC_BASE + IAR, mask);
47} 55}
48 56
49static void intc_disable_or_mask(unsigned int irq) 57static void intc_disable_or_mask(unsigned int irq)
diff --git a/arch/microblaze/kernel/irq.c b/arch/microblaze/kernel/irq.c
index 7d5ddd62d4d2..8f120aca123d 100644
--- a/arch/microblaze/kernel/irq.c
+++ b/arch/microblaze/kernel/irq.c
@@ -9,6 +9,7 @@
9 */ 9 */
10 10
11#include <linux/init.h> 11#include <linux/init.h>
12#include <linux/ftrace.h>
12#include <linux/kernel.h> 13#include <linux/kernel.h>
13#include <linux/hardirq.h> 14#include <linux/hardirq.h>
14#include <linux/interrupt.h> 15#include <linux/interrupt.h>
@@ -32,7 +33,7 @@ EXPORT_SYMBOL_GPL(irq_of_parse_and_map);
32 33
33static u32 concurrent_irq; 34static u32 concurrent_irq;
34 35
35void do_IRQ(struct pt_regs *regs) 36void __irq_entry do_IRQ(struct pt_regs *regs)
36{ 37{
37 unsigned int irq; 38 unsigned int irq;
38 struct pt_regs *old_regs = set_irq_regs(regs); 39 struct pt_regs *old_regs = set_irq_regs(regs);
@@ -68,7 +69,7 @@ int show_interrupts(struct seq_file *p, void *v)
68 } 69 }
69 70
70 if (i < nr_irq) { 71 if (i < nr_irq) {
71 spin_lock_irqsave(&irq_desc[i].lock, flags); 72 raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
72 action = irq_desc[i].action; 73 action = irq_desc[i].action;
73 if (!action) 74 if (!action)
74 goto skip; 75 goto skip;
@@ -89,7 +90,22 @@ int show_interrupts(struct seq_file *p, void *v)
89 90
90 seq_putc(p, '\n'); 91 seq_putc(p, '\n');
91skip: 92skip:
92 spin_unlock_irqrestore(&irq_desc[i].lock, flags); 93 raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
93 } 94 }
94 return 0; 95 return 0;
95} 96}
97
98/* MS: There is no any advance mapping mechanism. We are using simple 32bit
99 intc without any cascades or any connection that's why mapping is 1:1 */
100unsigned int irq_create_mapping(struct irq_host *host, irq_hw_number_t hwirq)
101{
102 return hwirq;
103}
104EXPORT_SYMBOL_GPL(irq_create_mapping);
105
106unsigned int irq_create_of_mapping(struct device_node *controller,
107 u32 *intspec, unsigned int intsize)
108{
109 return intspec[0];
110}
111EXPORT_SYMBOL_GPL(irq_create_of_mapping);
diff --git a/arch/microblaze/kernel/mcount.S b/arch/microblaze/kernel/mcount.S
new file mode 100644
index 000000000000..e7eaa7a8cbd3
--- /dev/null
+++ b/arch/microblaze/kernel/mcount.S
@@ -0,0 +1,170 @@
1/*
2 * Low-level ftrace handling
3 *
4 * Copyright (C) 2009 Michal Simek <monstr@monstr.eu>
5 * Copyright (C) 2009 PetaLogix
6 *
7 * This file is subject to the terms and conditions of the GNU General
8 * Public License. See the file COPYING in the main directory of this
9 * archive for more details.
10 */
11
12#include <linux/linkage.h>
13
14#define NOALIGN_ENTRY(name) .globl name; name:
15
16/* FIXME MS: I think that I don't need to save all regs */
17#define SAVE_REGS \
18 addik r1, r1, -120; \
19 swi r2, r1, 4; \
20 swi r3, r1, 8; \
21 swi r4, r1, 12; \
22 swi r5, r1, 116; \
23 swi r6, r1, 16; \
24 swi r7, r1, 20; \
25 swi r8, r1, 24; \
26 swi r9, r1, 28; \
27 swi r10, r1, 32; \
28 swi r11, r1, 36; \
29 swi r12, r1, 40; \
30 swi r13, r1, 44; \
31 swi r14, r1, 48; \
32 swi r16, r1, 52; \
33 swi r17, r1, 56; \
34 swi r18, r1, 60; \
35 swi r19, r1, 64; \
36 swi r20, r1, 68; \
37 swi r21, r1, 72; \
38 swi r22, r1, 76; \
39 swi r23, r1, 80; \
40 swi r24, r1, 84; \
41 swi r25, r1, 88; \
42 swi r26, r1, 92; \
43 swi r27, r1, 96; \
44 swi r28, r1, 100; \
45 swi r29, r1, 104; \
46 swi r30, r1, 108; \
47 swi r31, r1, 112;
48
49#define RESTORE_REGS \
50 lwi r2, r1, 4; \
51 lwi r3, r1, 8; \
52 lwi r4, r1, 12; \
53 lwi r5, r1, 116; \
54 lwi r6, r1, 16; \
55 lwi r7, r1, 20; \
56 lwi r8, r1, 24; \
57 lwi r9, r1, 28; \
58 lwi r10, r1, 32; \
59 lwi r11, r1, 36; \
60 lwi r12, r1, 40; \
61 lwi r13, r1, 44; \
62 lwi r14, r1, 48; \
63 lwi r16, r1, 52; \
64 lwi r17, r1, 56; \
65 lwi r18, r1, 60; \
66 lwi r19, r1, 64; \
67 lwi r20, r1, 68; \
68 lwi r21, r1, 72; \
69 lwi r22, r1, 76; \
70 lwi r23, r1, 80; \
71 lwi r24, r1, 84; \
72 lwi r25, r1, 88; \
73 lwi r26, r1, 92; \
74 lwi r27, r1, 96; \
75 lwi r28, r1, 100; \
76 lwi r29, r1, 104; \
77 lwi r30, r1, 108; \
78 lwi r31, r1, 112; \
79 addik r1, r1, 120;
80
81ENTRY(ftrace_stub)
82 rtsd r15, 8;
83 nop;
84
85ENTRY(_mcount)
86#ifdef CONFIG_DYNAMIC_FTRACE
87ENTRY(ftrace_caller)
88 /* MS: It is just barrier which is removed from C code */
89 rtsd r15, 8
90 nop
91#endif /* CONFIG_DYNAMIC_FTRACE */
92 SAVE_REGS
93 swi r15, r1, 0;
94 /* MS: HAVE_FUNCTION_TRACE_MCOUNT_TEST begin of checking */
95 lwi r5, r0, function_trace_stop;
96 bneid r5, end;
97 nop;
98 /* MS: HAVE_FUNCTION_TRACE_MCOUNT_TEST end of checking */
99#ifdef CONFIG_FUNCTION_GRAPH_TRACER
100#ifndef CONFIG_DYNAMIC_FTRACE
101 lwi r5, r0, ftrace_graph_return;
102 addik r6, r0, ftrace_stub; /* asm implementation */
103 cmpu r5, r5, r6; /* ftrace_graph_return != ftrace_stub */
104 beqid r5, end_graph_tracer;
105 nop;
106
107 lwi r6, r0, ftrace_graph_entry;
108 addik r5, r0, ftrace_graph_entry_stub; /* implemented in C */
109 cmpu r5, r5, r6; /* ftrace_graph_entry != ftrace_graph_entry_stub */
110 beqid r5, end_graph_tracer;
111 nop;
112#else /* CONFIG_DYNAMIC_FTRACE */
113NOALIGN_ENTRY(ftrace_call_graph)
114 /* MS: jump over graph function - replaced from C code */
115 bri end_graph_tracer
116#endif /* CONFIG_DYNAMIC_FTRACE */
117 addik r5, r1, 120; /* MS: load parent addr */
118 addik r6, r15, 0; /* MS: load current function addr */
119 bralid r15, prepare_ftrace_return;
120 nop;
121 /* MS: graph was taken that's why - can jump over function trace */
122 brid end;
123 nop;
124end_graph_tracer:
125#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
126#ifndef CONFIG_DYNAMIC_FTRACE
127 /* MS: test function trace if is taken or not */
128 lwi r20, r0, ftrace_trace_function;
129 addik r6, r0, ftrace_stub;
130 cmpu r5, r20, r6; /* ftrace_trace_function != ftrace_stub */
131 beqid r5, end; /* MS: not taken -> jump over */
132 nop;
133#else /* CONFIG_DYNAMIC_FTRACE */
134NOALIGN_ENTRY(ftrace_call)
135/* instruction for setup imm FUNC_part1, addik r20, r0, FUNC_part2 */
136 nop
137 nop
138#endif /* CONFIG_DYNAMIC_FTRACE */
139/* static normal trace */
140 lwi r6, r1, 120; /* MS: load parent addr */
141 addik r5, r15, 0; /* MS: load current function addr */
142 /* MS: here is dependency on previous code */
143 brald r15, r20; /* MS: jump to ftrace handler */
144 nop;
145end:
146 lwi r15, r1, 0;
147 RESTORE_REGS
148
149 rtsd r15, 8; /* MS: jump back */
150 nop;
151
152#ifdef CONFIG_FUNCTION_GRAPH_TRACER
153ENTRY(return_to_handler)
154 nop; /* MS: just barrier for rtsd r15, 8 */
155 nop;
156 SAVE_REGS
157 swi r15, r1, 0;
158
159 /* MS: find out returning address */
160 bralid r15, ftrace_return_to_handler;
161 nop;
162
163 /* MS: return value from ftrace_return_to_handler is my returning addr
164 * must be before restore regs because I have to restore r3 content */
165 addik r15, r3, 0;
166 RESTORE_REGS
167
168 rtsd r15, 8; /* MS: jump back */
169 nop;
170#endif /* CONFIG_FUNCTION_TRACER */
diff --git a/arch/microblaze/kernel/microblaze_ksyms.c b/arch/microblaze/kernel/microblaze_ksyms.c
index 59ff20e33e0c..ff85f7718035 100644
--- a/arch/microblaze/kernel/microblaze_ksyms.c
+++ b/arch/microblaze/kernel/microblaze_ksyms.c
@@ -18,6 +18,7 @@
18#include <linux/io.h> 18#include <linux/io.h>
19#include <asm/page.h> 19#include <asm/page.h>
20#include <asm/system.h> 20#include <asm/system.h>
21#include <linux/ftrace.h>
21#include <linux/uaccess.h> 22#include <linux/uaccess.h>
22 23
23/* 24/*
@@ -47,3 +48,18 @@ extern void __umodsi3(void);
47EXPORT_SYMBOL(__umodsi3); 48EXPORT_SYMBOL(__umodsi3);
48extern char *_ebss; 49extern char *_ebss;
49EXPORT_SYMBOL_GPL(_ebss); 50EXPORT_SYMBOL_GPL(_ebss);
51#ifdef CONFIG_FUNCTION_TRACER
52extern void _mcount(void);
53EXPORT_SYMBOL(_mcount);
54#endif
55
56/*
57 * Assembly functions that may be used (directly or indirectly) by modules
58 */
59EXPORT_SYMBOL(__copy_tofrom_user);
60EXPORT_SYMBOL(__strncpy_user);
61
62#ifdef CONFIG_OPT_LIB_ASM
63EXPORT_SYMBOL(memcpy);
64EXPORT_SYMBOL(memmove);
65#endif
diff --git a/arch/microblaze/kernel/misc.S b/arch/microblaze/kernel/misc.S
index df16c6287a8e..0fb5fc6c1fc2 100644
--- a/arch/microblaze/kernel/misc.S
+++ b/arch/microblaze/kernel/misc.S
@@ -26,9 +26,10 @@
26 * We avoid flushing the pinned 0, 1 and possibly 2 entries. 26 * We avoid flushing the pinned 0, 1 and possibly 2 entries.
27 */ 27 */
28.globl _tlbia; 28.globl _tlbia;
29.type _tlbia, @function
29.align 4; 30.align 4;
30_tlbia: 31_tlbia:
31 addik r12, r0, 63 /* flush all entries (63 - 3) */ 32 addik r12, r0, MICROBLAZE_TLB_SIZE - 1 /* flush all entries (63 - 3) */
32 /* isync */ 33 /* isync */
33_tlbia_1: 34_tlbia_1:
34 mts rtlbx, r12 35 mts rtlbx, r12
@@ -41,11 +42,13 @@ _tlbia_1:
41 /* sync */ 42 /* sync */
42 rtsd r15, 8 43 rtsd r15, 8
43 nop 44 nop
45 .size _tlbia, . - _tlbia
44 46
45/* 47/*
46 * Flush MMU TLB for a particular address (in r5) 48 * Flush MMU TLB for a particular address (in r5)
47 */ 49 */
48.globl _tlbie; 50.globl _tlbie;
51.type _tlbie, @function
49.align 4; 52.align 4;
50_tlbie: 53_tlbie:
51 mts rtlbsx, r5 /* look up the address in TLB */ 54 mts rtlbsx, r5 /* look up the address in TLB */
@@ -59,17 +62,20 @@ _tlbie_1:
59 rtsd r15, 8 62 rtsd r15, 8
60 nop 63 nop
61 64
65 .size _tlbie, . - _tlbie
66
62/* 67/*
63 * Allocate TLB entry for early console 68 * Allocate TLB entry for early console
64 */ 69 */
65.globl early_console_reg_tlb_alloc; 70.globl early_console_reg_tlb_alloc;
71.type early_console_reg_tlb_alloc, @function
66.align 4; 72.align 4;
67early_console_reg_tlb_alloc: 73early_console_reg_tlb_alloc:
68 /* 74 /*
69 * Load a TLB entry for the UART, so that microblaze_progress() can use 75 * Load a TLB entry for the UART, so that microblaze_progress() can use
70 * the UARTs nice and early. We use a 4k real==virtual mapping. 76 * the UARTs nice and early. We use a 4k real==virtual mapping.
71 */ 77 */
72 ori r4, r0, 63 78 ori r4, r0, MICROBLAZE_TLB_SIZE - 1
73 mts rtlbx, r4 /* TLB slot 2 */ 79 mts rtlbx, r4 /* TLB slot 2 */
74 80
75 or r4,r5,r0 81 or r4,r5,r0
@@ -86,35 +92,4 @@ early_console_reg_tlb_alloc:
86 rtsd r15, 8 92 rtsd r15, 8
87 nop 93 nop
88 94
89/* 95 .size early_console_reg_tlb_alloc, . - early_console_reg_tlb_alloc
90 * Copy a whole page (4096 bytes).
91 */
92#define COPY_16_BYTES \
93 lwi r7, r6, 0; \
94 lwi r8, r6, 4; \
95 lwi r9, r6, 8; \
96 lwi r10, r6, 12; \
97 swi r7, r5, 0; \
98 swi r8, r5, 4; \
99 swi r9, r5, 8; \
100 swi r10, r5, 12
101
102
103/* FIXME DCACHE_LINE_BYTES (CONFIG_XILINX_MICROBLAZE0_DCACHE_LINE_LEN * 4)*/
104#define DCACHE_LINE_BYTES (4 * 4)
105
106.globl copy_page;
107.align 4;
108copy_page:
109 ori r11, r0, (PAGE_SIZE/DCACHE_LINE_BYTES) - 1
110_copy_page_loop:
111 COPY_16_BYTES
112#if DCACHE_LINE_BYTES >= 32
113 COPY_16_BYTES
114#endif
115 addik r6, r6, DCACHE_LINE_BYTES
116 addik r5, r5, DCACHE_LINE_BYTES
117 bneid r11, _copy_page_loop
118 addik r11, r11, -1
119 rtsd r15, 8
120 nop
diff --git a/arch/microblaze/kernel/module.c b/arch/microblaze/kernel/module.c
index 5a45b1adfef1..0e73f6606547 100644
--- a/arch/microblaze/kernel/module.c
+++ b/arch/microblaze/kernel/module.c
@@ -12,11 +12,11 @@
12#include <linux/kernel.h> 12#include <linux/kernel.h>
13#include <linux/elf.h> 13#include <linux/elf.h>
14#include <linux/vmalloc.h> 14#include <linux/vmalloc.h>
15#include <linux/slab.h>
16#include <linux/fs.h> 15#include <linux/fs.h>
17#include <linux/string.h> 16#include <linux/string.h>
18 17
19#include <asm/pgtable.h> 18#include <asm/pgtable.h>
19#include <asm/cacheflush.h>
20 20
21void *module_alloc(unsigned long size) 21void *module_alloc(unsigned long size)
22{ 22{
@@ -152,6 +152,7 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab,
152int module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs, 152int module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs,
153 struct module *module) 153 struct module *module)
154{ 154{
155 flush_dcache();
155 return 0; 156 return 0;
156} 157}
157 158
diff --git a/arch/microblaze/kernel/of_platform.c b/arch/microblaze/kernel/of_platform.c
index acf4574d0f18..0dc755286d38 100644
--- a/arch/microblaze/kernel/of_platform.c
+++ b/arch/microblaze/kernel/of_platform.c
@@ -17,7 +17,6 @@
17#include <linux/init.h> 17#include <linux/init.h>
18#include <linux/module.h> 18#include <linux/module.h>
19#include <linux/mod_devicetable.h> 19#include <linux/mod_devicetable.h>
20#include <linux/slab.h>
21#include <linux/pci.h> 20#include <linux/pci.h>
22#include <linux/of.h> 21#include <linux/of.h>
23#include <linux/of_device.h> 22#include <linux/of_device.h>
@@ -185,7 +184,7 @@ EXPORT_SYMBOL(of_find_device_by_node);
185static int of_dev_phandle_match(struct device *dev, void *data) 184static int of_dev_phandle_match(struct device *dev, void *data)
186{ 185{
187 phandle *ph = data; 186 phandle *ph = data;
188 return to_of_device(dev)->node->linux_phandle == *ph; 187 return to_of_device(dev)->node->phandle == *ph;
189} 188}
190 189
191struct of_device *of_find_device_by_phandle(phandle ph) 190struct of_device *of_find_device_by_phandle(phandle ph)
diff --git a/arch/microblaze/kernel/process.c b/arch/microblaze/kernel/process.c
index c592d475b3d8..09bed44dfcd3 100644
--- a/arch/microblaze/kernel/process.c
+++ b/arch/microblaze/kernel/process.c
@@ -15,6 +15,8 @@
15#include <linux/bitops.h> 15#include <linux/bitops.h>
16#include <asm/system.h> 16#include <asm/system.h>
17#include <asm/pgalloc.h> 17#include <asm/pgalloc.h>
18#include <asm/uaccess.h> /* for USER_DS macros */
19#include <asm/cacheflush.h>
18 20
19void show_regs(struct pt_regs *regs) 21void show_regs(struct pt_regs *regs)
20{ 22{
@@ -73,7 +75,10 @@ __setup("hlt", hlt_setup);
73 75
74void default_idle(void) 76void default_idle(void)
75{ 77{
76 if (!hlt_counter) { 78 if (likely(hlt_counter)) {
79 while (!need_resched())
80 cpu_relax();
81 } else {
77 clear_thread_flag(TIF_POLLING_NRFLAG); 82 clear_thread_flag(TIF_POLLING_NRFLAG);
78 smp_mb__after_clear_bit(); 83 smp_mb__after_clear_bit();
79 local_irq_disable(); 84 local_irq_disable();
@@ -81,9 +86,7 @@ void default_idle(void)
81 cpu_sleep(); 86 cpu_sleep();
82 local_irq_enable(); 87 local_irq_enable();
83 set_thread_flag(TIF_POLLING_NRFLAG); 88 set_thread_flag(TIF_POLLING_NRFLAG);
84 } else 89 }
85 while (!need_resched())
86 cpu_relax();
87} 90}
88 91
89void cpu_idle(void) 92void cpu_idle(void)
diff --git a/arch/microblaze/kernel/prom.c b/arch/microblaze/kernel/prom.c
index c005cc6f1aaf..a15ef6d67ca9 100644
--- a/arch/microblaze/kernel/prom.c
+++ b/arch/microblaze/kernel/prom.c
@@ -42,697 +42,20 @@
42#include <asm/sections.h> 42#include <asm/sections.h>
43#include <asm/pci-bridge.h> 43#include <asm/pci-bridge.h>
44 44
45static int __initdata dt_root_addr_cells; 45void __init early_init_dt_scan_chosen_arch(unsigned long node)
46static int __initdata dt_root_size_cells;
47
48typedef u32 cell_t;
49
50static struct boot_param_header *initial_boot_params;
51
52/* export that to outside world */
53struct device_node *of_chosen;
54
55static inline char *find_flat_dt_string(u32 offset)
56{
57 return ((char *)initial_boot_params) +
58 initial_boot_params->off_dt_strings + offset;
59}
60
61/**
62 * This function is used to scan the flattened device-tree, it is
63 * used to extract the memory informations at boot before we can
64 * unflatten the tree
65 */
66int __init of_scan_flat_dt(int (*it)(unsigned long node,
67 const char *uname, int depth,
68 void *data),
69 void *data)
70{
71 unsigned long p = ((unsigned long)initial_boot_params) +
72 initial_boot_params->off_dt_struct;
73 int rc = 0;
74 int depth = -1;
75
76 do {
77 u32 tag = *((u32 *)p);
78 char *pathp;
79
80 p += 4;
81 if (tag == OF_DT_END_NODE) {
82 depth--;
83 continue;
84 }
85 if (tag == OF_DT_NOP)
86 continue;
87 if (tag == OF_DT_END)
88 break;
89 if (tag == OF_DT_PROP) {
90 u32 sz = *((u32 *)p);
91 p += 8;
92 if (initial_boot_params->version < 0x10)
93 p = _ALIGN(p, sz >= 8 ? 8 : 4);
94 p += sz;
95 p = _ALIGN(p, 4);
96 continue;
97 }
98 if (tag != OF_DT_BEGIN_NODE) {
99 printk(KERN_WARNING "Invalid tag %x scanning flattened"
100 " device tree !\n", tag);
101 return -EINVAL;
102 }
103 depth++;
104 pathp = (char *)p;
105 p = _ALIGN(p + strlen(pathp) + 1, 4);
106 if ((*pathp) == '/') {
107 char *lp, *np;
108 for (lp = NULL, np = pathp; *np; np++)
109 if ((*np) == '/')
110 lp = np+1;
111 if (lp != NULL)
112 pathp = lp;
113 }
114 rc = it(p, pathp, depth, data);
115 if (rc != 0)
116 break;
117 } while (1);
118
119 return rc;
120}
121
122unsigned long __init of_get_flat_dt_root(void)
123{
124 unsigned long p = ((unsigned long)initial_boot_params) +
125 initial_boot_params->off_dt_struct;
126
127 while (*((u32 *)p) == OF_DT_NOP)
128 p += 4;
129 BUG_ON(*((u32 *)p) != OF_DT_BEGIN_NODE);
130 p += 4;
131 return _ALIGN(p + strlen((char *)p) + 1, 4);
132}
133
134/**
135 * This function can be used within scan_flattened_dt callback to get
136 * access to properties
137 */
138void *__init of_get_flat_dt_prop(unsigned long node, const char *name,
139 unsigned long *size)
140{
141 unsigned long p = node;
142
143 do {
144 u32 tag = *((u32 *)p);
145 u32 sz, noff;
146 const char *nstr;
147
148 p += 4;
149 if (tag == OF_DT_NOP)
150 continue;
151 if (tag != OF_DT_PROP)
152 return NULL;
153
154 sz = *((u32 *)p);
155 noff = *((u32 *)(p + 4));
156 p += 8;
157 if (initial_boot_params->version < 0x10)
158 p = _ALIGN(p, sz >= 8 ? 8 : 4);
159
160 nstr = find_flat_dt_string(noff);
161 if (nstr == NULL) {
162 printk(KERN_WARNING "Can't find property index"
163 " name !\n");
164 return NULL;
165 }
166 if (strcmp(name, nstr) == 0) {
167 if (size)
168 *size = sz;
169 return (void *)p;
170 }
171 p += sz;
172 p = _ALIGN(p, 4);
173 } while (1);
174}
175
176int __init of_flat_dt_is_compatible(unsigned long node, const char *compat)
177{
178 const char *cp;
179 unsigned long cplen, l;
180
181 cp = of_get_flat_dt_prop(node, "compatible", &cplen);
182 if (cp == NULL)
183 return 0;
184 while (cplen > 0) {
185 if (strncasecmp(cp, compat, strlen(compat)) == 0)
186 return 1;
187 l = strlen(cp) + 1;
188 cp += l;
189 cplen -= l;
190 }
191
192 return 0;
193}
194
195static void *__init unflatten_dt_alloc(unsigned long *mem, unsigned long size,
196 unsigned long align)
197{
198 void *res;
199
200 *mem = _ALIGN(*mem, align);
201 res = (void *)*mem;
202 *mem += size;
203
204 return res;
205}
206
207static unsigned long __init unflatten_dt_node(unsigned long mem,
208 unsigned long *p,
209 struct device_node *dad,
210 struct device_node ***allnextpp,
211 unsigned long fpsize)
212{
213 struct device_node *np;
214 struct property *pp, **prev_pp = NULL;
215 char *pathp;
216 u32 tag;
217 unsigned int l, allocl;
218 int has_name = 0;
219 int new_format = 0;
220
221 tag = *((u32 *)(*p));
222 if (tag != OF_DT_BEGIN_NODE) {
223 printk("Weird tag at start of node: %x\n", tag);
224 return mem;
225 }
226 *p += 4;
227 pathp = (char *)*p;
228 l = allocl = strlen(pathp) + 1;
229 *p = _ALIGN(*p + l, 4);
230
231 /* version 0x10 has a more compact unit name here instead of the full
232 * path. we accumulate the full path size using "fpsize", we'll rebuild
233 * it later. We detect this because the first character of the name is
234 * not '/'.
235 */
236 if ((*pathp) != '/') {
237 new_format = 1;
238 if (fpsize == 0) {
239 /* root node: special case. fpsize accounts for path
240 * plus terminating zero. root node only has '/', so
241 * fpsize should be 2, but we want to avoid the first
242 * level nodes to have two '/' so we use fpsize 1 here
243 */
244 fpsize = 1;
245 allocl = 2;
246 } else {
247 /* account for '/' and path size minus terminal 0
248 * already in 'l'
249 */
250 fpsize += l;
251 allocl = fpsize;
252 }
253 }
254
255 np = unflatten_dt_alloc(&mem, sizeof(struct device_node) + allocl,
256 __alignof__(struct device_node));
257 if (allnextpp) {
258 memset(np, 0, sizeof(*np));
259 np->full_name = ((char *)np) + sizeof(struct device_node);
260 if (new_format) {
261 char *p2 = np->full_name;
262 /* rebuild full path for new format */
263 if (dad && dad->parent) {
264 strcpy(p2, dad->full_name);
265#ifdef DEBUG
266 if ((strlen(p2) + l + 1) != allocl) {
267 pr_debug("%s: p: %d, l: %d, a: %d\n",
268 pathp, (int)strlen(p2),
269 l, allocl);
270 }
271#endif
272 p2 += strlen(p2);
273 }
274 *(p2++) = '/';
275 memcpy(p2, pathp, l);
276 } else
277 memcpy(np->full_name, pathp, l);
278 prev_pp = &np->properties;
279 **allnextpp = np;
280 *allnextpp = &np->allnext;
281 if (dad != NULL) {
282 np->parent = dad;
283 /* we temporarily use the next field as `last_child'*/
284 if (dad->next == NULL)
285 dad->child = np;
286 else
287 dad->next->sibling = np;
288 dad->next = np;
289 }
290 kref_init(&np->kref);
291 }
292 while (1) {
293 u32 sz, noff;
294 char *pname;
295
296 tag = *((u32 *)(*p));
297 if (tag == OF_DT_NOP) {
298 *p += 4;
299 continue;
300 }
301 if (tag != OF_DT_PROP)
302 break;
303 *p += 4;
304 sz = *((u32 *)(*p));
305 noff = *((u32 *)((*p) + 4));
306 *p += 8;
307 if (initial_boot_params->version < 0x10)
308 *p = _ALIGN(*p, sz >= 8 ? 8 : 4);
309
310 pname = find_flat_dt_string(noff);
311 if (pname == NULL) {
312 printk(KERN_INFO
313 "Can't find property name in list !\n");
314 break;
315 }
316 if (strcmp(pname, "name") == 0)
317 has_name = 1;
318 l = strlen(pname) + 1;
319 pp = unflatten_dt_alloc(&mem, sizeof(struct property),
320 __alignof__(struct property));
321 if (allnextpp) {
322 if (strcmp(pname, "linux,phandle") == 0) {
323 np->node = *((u32 *)*p);
324 if (np->linux_phandle == 0)
325 np->linux_phandle = np->node;
326 }
327 if (strcmp(pname, "ibm,phandle") == 0)
328 np->linux_phandle = *((u32 *)*p);
329 pp->name = pname;
330 pp->length = sz;
331 pp->value = (void *)*p;
332 *prev_pp = pp;
333 prev_pp = &pp->next;
334 }
335 *p = _ALIGN((*p) + sz, 4);
336 }
337 /* with version 0x10 we may not have the name property, recreate
338 * it here from the unit name if absent
339 */
340 if (!has_name) {
341 char *p1 = pathp, *ps = pathp, *pa = NULL;
342 int sz;
343
344 while (*p1) {
345 if ((*p1) == '@')
346 pa = p1;
347 if ((*p1) == '/')
348 ps = p1 + 1;
349 p1++;
350 }
351 if (pa < ps)
352 pa = p1;
353 sz = (pa - ps) + 1;
354 pp = unflatten_dt_alloc(&mem, sizeof(struct property) + sz,
355 __alignof__(struct property));
356 if (allnextpp) {
357 pp->name = "name";
358 pp->length = sz;
359 pp->value = pp + 1;
360 *prev_pp = pp;
361 prev_pp = &pp->next;
362 memcpy(pp->value, ps, sz - 1);
363 ((char *)pp->value)[sz - 1] = 0;
364 pr_debug("fixed up name for %s -> %s\n", pathp,
365 (char *)pp->value);
366 }
367 }
368 if (allnextpp) {
369 *prev_pp = NULL;
370 np->name = of_get_property(np, "name", NULL);
371 np->type = of_get_property(np, "device_type", NULL);
372
373 if (!np->name)
374 np->name = "<NULL>";
375 if (!np->type)
376 np->type = "<NULL>";
377 }
378 while (tag == OF_DT_BEGIN_NODE) {
379 mem = unflatten_dt_node(mem, p, np, allnextpp, fpsize);
380 tag = *((u32 *)(*p));
381 }
382 if (tag != OF_DT_END_NODE) {
383 printk(KERN_INFO "Weird tag at end of node: %x\n", tag);
384 return mem;
385 }
386 *p += 4;
387 return mem;
388}
389
390/**
391 * unflattens the device-tree passed by the firmware, creating the
392 * tree of struct device_node. It also fills the "name" and "type"
393 * pointers of the nodes so the normal device-tree walking functions
394 * can be used (this used to be done by finish_device_tree)
395 */
396void __init unflatten_device_tree(void)
397{
398 unsigned long start, mem, size;
399 struct device_node **allnextp = &allnodes;
400
401 pr_debug(" -> unflatten_device_tree()\n");
402
403 /* First pass, scan for size */
404 start = ((unsigned long)initial_boot_params) +
405 initial_boot_params->off_dt_struct;
406 size = unflatten_dt_node(0, &start, NULL, NULL, 0);
407 size = (size | 3) + 1;
408
409 pr_debug(" size is %lx, allocating...\n", size);
410
411 /* Allocate memory for the expanded device tree */
412 mem = lmb_alloc(size + 4, __alignof__(struct device_node));
413 mem = (unsigned long) __va(mem);
414
415 ((u32 *)mem)[size / 4] = 0xdeadbeef;
416
417 pr_debug(" unflattening %lx...\n", mem);
418
419 /* Second pass, do actual unflattening */
420 start = ((unsigned long)initial_boot_params) +
421 initial_boot_params->off_dt_struct;
422 unflatten_dt_node(mem, &start, NULL, &allnextp, 0);
423 if (*((u32 *)start) != OF_DT_END)
424 printk(KERN_WARNING "Weird tag at end of tree: %08x\n",
425 *((u32 *)start));
426 if (((u32 *)mem)[size / 4] != 0xdeadbeef)
427 printk(KERN_WARNING "End of tree marker overwritten: %08x\n",
428 ((u32 *)mem)[size / 4]);
429 *allnextp = NULL;
430
431 /* Get pointer to OF "/chosen" node for use everywhere */
432 of_chosen = of_find_node_by_path("/chosen");
433 if (of_chosen == NULL)
434 of_chosen = of_find_node_by_path("/chosen@0");
435
436 pr_debug(" <- unflatten_device_tree()\n");
437}
438
439#define early_init_dt_scan_drconf_memory(node) 0
440
441static int __init early_init_dt_scan_cpus(unsigned long node,
442 const char *uname, int depth,
443 void *data)
444{
445 static int logical_cpuid;
446 char *type = of_get_flat_dt_prop(node, "device_type", NULL);
447 const u32 *intserv;
448 int i, nthreads;
449 int found = 0;
450
451 /* We are scanning "cpu" nodes only */
452 if (type == NULL || strcmp(type, "cpu") != 0)
453 return 0;
454
455 /* Get physical cpuid */
456 intserv = of_get_flat_dt_prop(node, "reg", NULL);
457 nthreads = 1;
458
459 /*
460 * Now see if any of these threads match our boot cpu.
461 * NOTE: This must match the parsing done in smp_setup_cpu_maps.
462 */
463 for (i = 0; i < nthreads; i++) {
464 /*
465 * version 2 of the kexec param format adds the phys cpuid of
466 * booted proc.
467 */
468 if (initial_boot_params && initial_boot_params->version >= 2) {
469 if (intserv[i] ==
470 initial_boot_params->boot_cpuid_phys) {
471 found = 1;
472 break;
473 }
474 } else {
475 /*
476 * Check if it's the boot-cpu, set it's hw index now,
477 * unfortunately this format did not support booting
478 * off secondary threads.
479 */
480 if (of_get_flat_dt_prop(node,
481 "linux,boot-cpu", NULL) != NULL) {
482 found = 1;
483 break;
484 }
485 }
486
487#ifdef CONFIG_SMP
488 /* logical cpu id is always 0 on UP kernels */
489 logical_cpuid++;
490#endif
491 }
492
493 if (found) {
494 pr_debug("boot cpu: logical %d physical %d\n", logical_cpuid,
495 intserv[i]);
496 boot_cpuid = logical_cpuid;
497 }
498
499 return 0;
500}
501
502#ifdef CONFIG_BLK_DEV_INITRD
503static void __init early_init_dt_check_for_initrd(unsigned long node)
504{
505 unsigned long l;
506 u32 *prop;
507
508 pr_debug("Looking for initrd properties... ");
509
510 prop = of_get_flat_dt_prop(node, "linux,initrd-start", &l);
511 if (prop) {
512 initrd_start = (unsigned long)
513 __va((u32)of_read_ulong(prop, l/4));
514
515 prop = of_get_flat_dt_prop(node, "linux,initrd-end", &l);
516 if (prop) {
517 initrd_end = (unsigned long)
518 __va((u32)of_read_ulong(prop, 1/4));
519 initrd_below_start_ok = 1;
520 } else {
521 initrd_start = 0;
522 }
523 }
524
525 pr_debug("initrd_start=0x%lx initrd_end=0x%lx\n",
526 initrd_start, initrd_end);
527}
528#else
529static inline void early_init_dt_check_for_initrd(unsigned long node)
530{
531}
532#endif /* CONFIG_BLK_DEV_INITRD */
533
534static int __init early_init_dt_scan_chosen(unsigned long node,
535 const char *uname, int depth, void *data)
536{
537 unsigned long l;
538 char *p;
539
540 pr_debug("search \"chosen\", depth: %d, uname: %s\n", depth, uname);
541
542 if (depth != 1 ||
543 (strcmp(uname, "chosen") != 0 &&
544 strcmp(uname, "chosen@0") != 0))
545 return 0;
546
547#ifdef CONFIG_KEXEC
548 lprop = (u64 *)of_get_flat_dt_prop(node,
549 "linux,crashkernel-base", NULL);
550 if (lprop)
551 crashk_res.start = *lprop;
552
553 lprop = (u64 *)of_get_flat_dt_prop(node,
554 "linux,crashkernel-size", NULL);
555 if (lprop)
556 crashk_res.end = crashk_res.start + *lprop - 1;
557#endif
558
559 early_init_dt_check_for_initrd(node);
560
561 /* Retreive command line */
562 p = of_get_flat_dt_prop(node, "bootargs", &l);
563 if (p != NULL && l > 0)
564 strlcpy(cmd_line, p, min((int)l, COMMAND_LINE_SIZE));
565
566#ifdef CONFIG_CMDLINE
567#ifndef CONFIG_CMDLINE_FORCE
568 if (p == NULL || l == 0 || (l == 1 && (*p) == 0))
569#endif
570 strlcpy(cmd_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
571#endif /* CONFIG_CMDLINE */
572
573 pr_debug("Command line is: %s\n", cmd_line);
574
575 /* break now */
576 return 1;
577}
578
579static int __init early_init_dt_scan_root(unsigned long node,
580 const char *uname, int depth, void *data)
581{
582 u32 *prop;
583
584 if (depth != 0)
585 return 0;
586
587 prop = of_get_flat_dt_prop(node, "#size-cells", NULL);
588 dt_root_size_cells = (prop == NULL) ? 1 : *prop;
589 pr_debug("dt_root_size_cells = %x\n", dt_root_size_cells);
590
591 prop = of_get_flat_dt_prop(node, "#address-cells", NULL);
592 dt_root_addr_cells = (prop == NULL) ? 2 : *prop;
593 pr_debug("dt_root_addr_cells = %x\n", dt_root_addr_cells);
594
595 /* break now */
596 return 1;
597}
598
599static u64 __init dt_mem_next_cell(int s, cell_t **cellp)
600{
601 cell_t *p = *cellp;
602
603 *cellp = p + s;
604 return of_read_number(p, s);
605}
606
607static int __init early_init_dt_scan_memory(unsigned long node,
608 const char *uname, int depth, void *data)
609{ 46{
610 char *type = of_get_flat_dt_prop(node, "device_type", NULL); 47 /* No Microblaze specific code here */
611 cell_t *reg, *endp;
612 unsigned long l;
613
614 /* Look for the ibm,dynamic-reconfiguration-memory node */
615/* if (depth == 1 &&
616 strcmp(uname, "ibm,dynamic-reconfiguration-memory") == 0)
617 return early_init_dt_scan_drconf_memory(node);
618*/
619 /* We are scanning "memory" nodes only */
620 if (type == NULL) {
621 /*
622 * The longtrail doesn't have a device_type on the
623 * /memory node, so look for the node called /memory@0.
624 */
625 if (depth != 1 || strcmp(uname, "memory@0") != 0)
626 return 0;
627 } else if (strcmp(type, "memory") != 0)
628 return 0;
629
630 reg = (cell_t *)of_get_flat_dt_prop(node, "linux,usable-memory", &l);
631 if (reg == NULL)
632 reg = (cell_t *)of_get_flat_dt_prop(node, "reg", &l);
633 if (reg == NULL)
634 return 0;
635
636 endp = reg + (l / sizeof(cell_t));
637
638 pr_debug("memory scan node %s, reg size %ld, data: %x %x %x %x,\n",
639 uname, l, reg[0], reg[1], reg[2], reg[3]);
640
641 while ((endp - reg) >= (dt_root_addr_cells + dt_root_size_cells)) {
642 u64 base, size;
643
644 base = dt_mem_next_cell(dt_root_addr_cells, &reg);
645 size = dt_mem_next_cell(dt_root_size_cells, &reg);
646
647 if (size == 0)
648 continue;
649 pr_debug(" - %llx , %llx\n", (unsigned long long)base,
650 (unsigned long long)size);
651
652 lmb_add(base, size);
653 }
654 return 0;
655} 48}
656 49
657#ifdef CONFIG_PHYP_DUMP 50void __init early_init_dt_add_memory_arch(u64 base, u64 size)
658/**
659 * phyp_dump_calculate_reserve_size() - reserve variable boot area 5% or arg
660 *
661 * Function to find the largest size we need to reserve
662 * during early boot process.
663 *
664 * It either looks for boot param and returns that OR
665 * returns larger of 256 or 5% rounded down to multiples of 256MB.
666 *
667 */
668static inline unsigned long phyp_dump_calculate_reserve_size(void)
669{ 51{
670 unsigned long tmp; 52 lmb_add(base, size);
671
672 if (phyp_dump_info->reserve_bootvar)
673 return phyp_dump_info->reserve_bootvar;
674
675 /* divide by 20 to get 5% of value */
676 tmp = lmb_end_of_DRAM();
677 do_div(tmp, 20);
678
679 /* round it down in multiples of 256 */
680 tmp = tmp & ~0x0FFFFFFFUL;
681
682 return (tmp > PHYP_DUMP_RMR_END ? tmp : PHYP_DUMP_RMR_END);
683} 53}
684 54
685/** 55u64 __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
686 * phyp_dump_reserve_mem() - reserve all not-yet-dumped mmemory
687 *
688 * This routine may reserve memory regions in the kernel only
689 * if the system is supported and a dump was taken in last
690 * boot instance or if the hardware is supported and the
691 * scratch area needs to be setup. In other instances it returns
692 * without reserving anything. The memory in case of dump being
693 * active is freed when the dump is collected (by userland tools).
694 */
695static void __init phyp_dump_reserve_mem(void)
696{ 56{
697 unsigned long base, size; 57 return lmb_alloc(size, align);
698 unsigned long variable_reserve_size;
699
700 if (!phyp_dump_info->phyp_dump_configured) {
701 printk(KERN_ERR "Phyp-dump not supported on this hardware\n");
702 return;
703 }
704
705 if (!phyp_dump_info->phyp_dump_at_boot) {
706 printk(KERN_INFO "Phyp-dump disabled at boot time\n");
707 return;
708 }
709
710 variable_reserve_size = phyp_dump_calculate_reserve_size();
711
712 if (phyp_dump_info->phyp_dump_is_active) {
713 /* Reserve *everything* above RMR.Area freed by userland tools*/
714 base = variable_reserve_size;
715 size = lmb_end_of_DRAM() - base;
716
717 /* XXX crashed_ram_end is wrong, since it may be beyond
718 * the memory_limit, it will need to be adjusted. */
719 lmb_reserve(base, size);
720
721 phyp_dump_info->init_reserve_start = base;
722 phyp_dump_info->init_reserve_size = size;
723 } else {
724 size = phyp_dump_info->cpu_state_size +
725 phyp_dump_info->hpte_region_size +
726 variable_reserve_size;
727 base = lmb_end_of_DRAM() - size;
728 lmb_reserve(base, size);
729 phyp_dump_info->init_reserve_start = base;
730 phyp_dump_info->init_reserve_size = size;
731 }
732} 58}
733#else
734static inline void __init phyp_dump_reserve_mem(void) {}
735#endif /* CONFIG_PHYP_DUMP && CONFIG_PPC_RTAS */
736 59
737#ifdef CONFIG_EARLY_PRINTK 60#ifdef CONFIG_EARLY_PRINTK
738/* MS this is Microblaze specifig function */ 61/* MS this is Microblaze specifig function */
@@ -775,11 +98,6 @@ void __init early_init_devtree(void *params)
775 /* Setup flat device-tree pointer */ 98 /* Setup flat device-tree pointer */
776 initial_boot_params = params; 99 initial_boot_params = params;
777 100
778#ifdef CONFIG_PHYP_DUMP
779 /* scan tree to see if dump occured during last boot */
780 of_scan_flat_dt(early_init_dt_scan_phyp_dump, NULL);
781#endif
782
783 /* Retrieve various informations from the /chosen node of the 101 /* Retrieve various informations from the /chosen node of the
784 * device-tree, including the platform type, initrd location and 102 * device-tree, including the platform type, initrd location and
785 * size, TCE reserve, and more ... 103 * size, TCE reserve, and more ...
@@ -799,33 +117,18 @@ void __init early_init_devtree(void *params)
799 117
800 pr_debug("Phys. mem: %lx\n", (unsigned long) lmb_phys_mem_size()); 118 pr_debug("Phys. mem: %lx\n", (unsigned long) lmb_phys_mem_size());
801 119
802 pr_debug("Scanning CPUs ...\n");
803
804 /* Retreive CPU related informations from the flat tree
805 * (altivec support, boot CPU ID, ...)
806 */
807 of_scan_flat_dt(early_init_dt_scan_cpus, NULL);
808
809 pr_debug(" <- early_init_devtree()\n"); 120 pr_debug(" <- early_init_devtree()\n");
810} 121}
811 122
812/** 123#ifdef CONFIG_BLK_DEV_INITRD
813 * Indicates whether the root node has a given value in its 124void __init early_init_dt_setup_initrd_arch(unsigned long start,
814 * compatible property. 125 unsigned long end)
815 */
816int machine_is_compatible(const char *compat)
817{ 126{
818 struct device_node *root; 127 initrd_start = (unsigned long)__va(start);
819 int rc = 0; 128 initrd_end = (unsigned long)__va(end);
820 129 initrd_below_start_ok = 1;
821 root = of_find_node_by_path("/");
822 if (root) {
823 rc = of_device_is_compatible(root, compat);
824 of_node_put(root);
825 }
826 return rc;
827} 130}
828EXPORT_SYMBOL(machine_is_compatible); 131#endif
829 132
830/******* 133/*******
831 * 134 *
@@ -838,296 +141,6 @@ EXPORT_SYMBOL(machine_is_compatible);
838 * 141 *
839 *******/ 142 *******/
840 143
841/**
842 * of_find_node_by_phandle - Find a node given a phandle
843 * @handle: phandle of the node to find
844 *
845 * Returns a node pointer with refcount incremented, use
846 * of_node_put() on it when done.
847 */
848struct device_node *of_find_node_by_phandle(phandle handle)
849{
850 struct device_node *np;
851
852 read_lock(&devtree_lock);
853 for (np = allnodes; np != NULL; np = np->allnext)
854 if (np->linux_phandle == handle)
855 break;
856 of_node_get(np);
857 read_unlock(&devtree_lock);
858 return np;
859}
860EXPORT_SYMBOL(of_find_node_by_phandle);
861
862/**
863 * of_find_all_nodes - Get next node in global list
864 * @prev: Previous node or NULL to start iteration
865 * of_node_put() will be called on it
866 *
867 * Returns a node pointer with refcount incremented, use
868 * of_node_put() on it when done.
869 */
870struct device_node *of_find_all_nodes(struct device_node *prev)
871{
872 struct device_node *np;
873
874 read_lock(&devtree_lock);
875 np = prev ? prev->allnext : allnodes;
876 for (; np != NULL; np = np->allnext)
877 if (of_node_get(np))
878 break;
879 of_node_put(prev);
880 read_unlock(&devtree_lock);
881 return np;
882}
883EXPORT_SYMBOL(of_find_all_nodes);
884
885/**
886 * of_node_get - Increment refcount of a node
887 * @node: Node to inc refcount, NULL is supported to
888 * simplify writing of callers
889 *
890 * Returns node.
891 */
892struct device_node *of_node_get(struct device_node *node)
893{
894 if (node)
895 kref_get(&node->kref);
896 return node;
897}
898EXPORT_SYMBOL(of_node_get);
899
900static inline struct device_node *kref_to_device_node(struct kref *kref)
901{
902 return container_of(kref, struct device_node, kref);
903}
904
905/**
906 * of_node_release - release a dynamically allocated node
907 * @kref: kref element of the node to be released
908 *
909 * In of_node_put() this function is passed to kref_put()
910 * as the destructor.
911 */
912static void of_node_release(struct kref *kref)
913{
914 struct device_node *node = kref_to_device_node(kref);
915 struct property *prop = node->properties;
916
917 /* We should never be releasing nodes that haven't been detached. */
918 if (!of_node_check_flag(node, OF_DETACHED)) {
919 printk(KERN_INFO "WARNING: Bad of_node_put() on %s\n",
920 node->full_name);
921 dump_stack();
922 kref_init(&node->kref);
923 return;
924 }
925
926 if (!of_node_check_flag(node, OF_DYNAMIC))
927 return;
928
929 while (prop) {
930 struct property *next = prop->next;
931 kfree(prop->name);
932 kfree(prop->value);
933 kfree(prop);
934 prop = next;
935
936 if (!prop) {
937 prop = node->deadprops;
938 node->deadprops = NULL;
939 }
940 }
941 kfree(node->full_name);
942 kfree(node->data);
943 kfree(node);
944}
945
946/**
947 * of_node_put - Decrement refcount of a node
948 * @node: Node to dec refcount, NULL is supported to
949 * simplify writing of callers
950 *
951 */
952void of_node_put(struct device_node *node)
953{
954 if (node)
955 kref_put(&node->kref, of_node_release);
956}
957EXPORT_SYMBOL(of_node_put);
958
959/*
960 * Plug a device node into the tree and global list.
961 */
962void of_attach_node(struct device_node *np)
963{
964 unsigned long flags;
965
966 write_lock_irqsave(&devtree_lock, flags);
967 np->sibling = np->parent->child;
968 np->allnext = allnodes;
969 np->parent->child = np;
970 allnodes = np;
971 write_unlock_irqrestore(&devtree_lock, flags);
972}
973
974/*
975 * "Unplug" a node from the device tree. The caller must hold
976 * a reference to the node. The memory associated with the node
977 * is not freed until its refcount goes to zero.
978 */
979void of_detach_node(struct device_node *np)
980{
981 struct device_node *parent;
982 unsigned long flags;
983
984 write_lock_irqsave(&devtree_lock, flags);
985
986 parent = np->parent;
987 if (!parent)
988 goto out_unlock;
989
990 if (allnodes == np)
991 allnodes = np->allnext;
992 else {
993 struct device_node *prev;
994 for (prev = allnodes;
995 prev->allnext != np;
996 prev = prev->allnext)
997 ;
998 prev->allnext = np->allnext;
999 }
1000
1001 if (parent->child == np)
1002 parent->child = np->sibling;
1003 else {
1004 struct device_node *prevsib;
1005 for (prevsib = np->parent->child;
1006 prevsib->sibling != np;
1007 prevsib = prevsib->sibling)
1008 ;
1009 prevsib->sibling = np->sibling;
1010 }
1011
1012 of_node_set_flag(np, OF_DETACHED);
1013
1014out_unlock:
1015 write_unlock_irqrestore(&devtree_lock, flags);
1016}
1017
1018/*
1019 * Add a property to a node
1020 */
1021int prom_add_property(struct device_node *np, struct property *prop)
1022{
1023 struct property **next;
1024 unsigned long flags;
1025
1026 prop->next = NULL;
1027 write_lock_irqsave(&devtree_lock, flags);
1028 next = &np->properties;
1029 while (*next) {
1030 if (strcmp(prop->name, (*next)->name) == 0) {
1031 /* duplicate ! don't insert it */
1032 write_unlock_irqrestore(&devtree_lock, flags);
1033 return -1;
1034 }
1035 next = &(*next)->next;
1036 }
1037 *next = prop;
1038 write_unlock_irqrestore(&devtree_lock, flags);
1039
1040#ifdef CONFIG_PROC_DEVICETREE
1041 /* try to add to proc as well if it was initialized */
1042 if (np->pde)
1043 proc_device_tree_add_prop(np->pde, prop);
1044#endif /* CONFIG_PROC_DEVICETREE */
1045
1046 return 0;
1047}
1048
1049/*
1050 * Remove a property from a node. Note that we don't actually
1051 * remove it, since we have given out who-knows-how-many pointers
1052 * to the data using get-property. Instead we just move the property
1053 * to the "dead properties" list, so it won't be found any more.
1054 */
1055int prom_remove_property(struct device_node *np, struct property *prop)
1056{
1057 struct property **next;
1058 unsigned long flags;
1059 int found = 0;
1060
1061 write_lock_irqsave(&devtree_lock, flags);
1062 next = &np->properties;
1063 while (*next) {
1064 if (*next == prop) {
1065 /* found the node */
1066 *next = prop->next;
1067 prop->next = np->deadprops;
1068 np->deadprops = prop;
1069 found = 1;
1070 break;
1071 }
1072 next = &(*next)->next;
1073 }
1074 write_unlock_irqrestore(&devtree_lock, flags);
1075
1076 if (!found)
1077 return -ENODEV;
1078
1079#ifdef CONFIG_PROC_DEVICETREE
1080 /* try to remove the proc node as well */
1081 if (np->pde)
1082 proc_device_tree_remove_prop(np->pde, prop);
1083#endif /* CONFIG_PROC_DEVICETREE */
1084
1085 return 0;
1086}
1087
1088/*
1089 * Update a property in a node. Note that we don't actually
1090 * remove it, since we have given out who-knows-how-many pointers
1091 * to the data using get-property. Instead we just move the property
1092 * to the "dead properties" list, and add the new property to the
1093 * property list
1094 */
1095int prom_update_property(struct device_node *np,
1096 struct property *newprop,
1097 struct property *oldprop)
1098{
1099 struct property **next;
1100 unsigned long flags;
1101 int found = 0;
1102
1103 write_lock_irqsave(&devtree_lock, flags);
1104 next = &np->properties;
1105 while (*next) {
1106 if (*next == oldprop) {
1107 /* found the node */
1108 newprop->next = oldprop->next;
1109 *next = newprop;
1110 oldprop->next = np->deadprops;
1111 np->deadprops = oldprop;
1112 found = 1;
1113 break;
1114 }
1115 next = &(*next)->next;
1116 }
1117 write_unlock_irqrestore(&devtree_lock, flags);
1118
1119 if (!found)
1120 return -ENODEV;
1121
1122#ifdef CONFIG_PROC_DEVICETREE
1123 /* try to add to proc as well if it was initialized */
1124 if (np->pde)
1125 proc_device_tree_update_prop(np->pde, newprop, oldprop);
1126#endif /* CONFIG_PROC_DEVICETREE */
1127
1128 return 0;
1129}
1130
1131#if defined(CONFIG_DEBUG_FS) && defined(DEBUG) 144#if defined(CONFIG_DEBUG_FS) && defined(DEBUG)
1132static struct debugfs_blob_wrapper flat_dt_blob; 145static struct debugfs_blob_wrapper flat_dt_blob;
1133 146
diff --git a/arch/microblaze/kernel/prom_parse.c b/arch/microblaze/kernel/prom_parse.c
index ae0352ecd5a9..bf7e6c27e318 100644
--- a/arch/microblaze/kernel/prom_parse.c
+++ b/arch/microblaze/kernel/prom_parse.c
@@ -256,7 +256,7 @@ int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq)
256 if (ppdev == NULL) { 256 if (ppdev == NULL) {
257 struct pci_controller *host; 257 struct pci_controller *host;
258 host = pci_bus_to_host(pdev->bus); 258 host = pci_bus_to_host(pdev->bus);
259 ppnode = host ? host->arch_data : NULL; 259 ppnode = host ? host->dn : NULL;
260 /* No node for host bridge ? give up */ 260 /* No node for host bridge ? give up */
261 if (ppnode == NULL) 261 if (ppnode == NULL)
262 return -EINVAL; 262 return -EINVAL;
diff --git a/arch/microblaze/kernel/ptrace.c b/arch/microblaze/kernel/ptrace.c
index 4b3ac32754de..a4a7770c6140 100644
--- a/arch/microblaze/kernel/ptrace.c
+++ b/arch/microblaze/kernel/ptrace.c
@@ -75,29 +75,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
75{ 75{
76 int rval; 76 int rval;
77 unsigned long val = 0; 77 unsigned long val = 0;
78 unsigned long copied;
79 78
80 switch (request) { 79 switch (request) {
81 case PTRACE_PEEKTEXT: /* read word at location addr. */
82 case PTRACE_PEEKDATA:
83 pr_debug("PEEKTEXT/PEEKDATA at %08lX\n", addr);
84 copied = access_process_vm(child, addr, &val, sizeof(val), 0);
85 rval = -EIO;
86 if (copied != sizeof(val))
87 break;
88 rval = put_user(val, (unsigned long *)data);
89 break;
90
91 case PTRACE_POKETEXT: /* write the word at location addr. */
92 case PTRACE_POKEDATA:
93 pr_debug("POKETEXT/POKEDATA to %08lX\n", addr);
94 rval = 0;
95 if (access_process_vm(child, addr, &data, sizeof(data), 1)
96 == sizeof(data))
97 break;
98 rval = -EIO;
99 break;
100
101 /* Read/write the word at location ADDR in the registers. */ 80 /* Read/write the word at location ADDR in the registers. */
102 case PTRACE_PEEKUSR: 81 case PTRACE_PEEKUSR:
103 case PTRACE_POKEUSR: 82 case PTRACE_POKEUSR:
@@ -130,50 +109,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
130 if (rval == 0 && request == PTRACE_PEEKUSR) 109 if (rval == 0 && request == PTRACE_PEEKUSR)
131 rval = put_user(val, (unsigned long *)data); 110 rval = put_user(val, (unsigned long *)data);
132 break; 111 break;
133 /* Continue and stop at next (return from) syscall */
134 case PTRACE_SYSCALL:
135 pr_debug("PTRACE_SYSCALL\n");
136 case PTRACE_SINGLESTEP:
137 pr_debug("PTRACE_SINGLESTEP\n");
138 /* Restart after a signal. */
139 case PTRACE_CONT:
140 pr_debug("PTRACE_CONT\n");
141 rval = -EIO;
142 if (!valid_signal(data))
143 break;
144
145 if (request == PTRACE_SYSCALL)
146 set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
147 else
148 clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
149
150 child->exit_code = data;
151 pr_debug("wakeup_process\n");
152 wake_up_process(child);
153 rval = 0;
154 break;
155
156 /*
157 * make the child exit. Best I can do is send it a sigkill.
158 * perhaps it should be put in the status that it wants to
159 * exit.
160 */
161 case PTRACE_KILL:
162 pr_debug("PTRACE_KILL\n");
163 rval = 0;
164 if (child->exit_state == EXIT_ZOMBIE) /* already dead */
165 break;
166 child->exit_code = SIGKILL;
167 wake_up_process(child);
168 break;
169
170 case PTRACE_DETACH: /* detach a process that was attached. */
171 pr_debug("PTRACE_DETACH\n");
172 rval = ptrace_detach(child, data);
173 break;
174 default: 112 default:
175 /* rval = ptrace_request(child, request, addr, data); noMMU */ 113 rval = ptrace_request(child, request, addr, data);
176 rval = -EIO;
177 } 114 }
178 return rval; 115 return rval;
179} 116}
diff --git a/arch/microblaze/kernel/reset.c b/arch/microblaze/kernel/reset.c
new file mode 100644
index 000000000000..a1721a33042e
--- /dev/null
+++ b/arch/microblaze/kernel/reset.c
@@ -0,0 +1,140 @@
1/*
2 * Copyright (C) 2009 Michal Simek <monstr@monstr.eu>
3 * Copyright (C) 2009 PetaLogix
4 *
5 * This file is subject to the terms and conditions of the GNU General Public
6 * License. See the file "COPYING" in the main directory of this archive
7 * for more details.
8 */
9
10#include <linux/init.h>
11#include <linux/of_platform.h>
12#include <asm/prom.h>
13
14/* Trigger specific functions */
15#ifdef CONFIG_GPIOLIB
16
17#include <linux/of_gpio.h>
18
19static int handle; /* reset pin handle */
20static unsigned int reset_val;
21
22static int of_reset_gpio_handle(void)
23{
24 int ret; /* variable which stored handle reset gpio pin */
25 struct device_node *root; /* root node */
26 struct device_node *gpio; /* gpio node */
27 struct of_gpio_chip *of_gc = NULL;
28 enum of_gpio_flags flags ;
29 const void *gpio_spec;
30
31 /* find out root node */
32 root = of_find_node_by_path("/");
33
34 /* give me handle for gpio node to be possible allocate pin */
35 ret = of_parse_phandles_with_args(root, "hard-reset-gpios",
36 "#gpio-cells", 0, &gpio, &gpio_spec);
37 if (ret) {
38 pr_debug("%s: can't parse gpios property\n", __func__);
39 goto err0;
40 }
41
42 of_gc = gpio->data;
43 if (!of_gc) {
44 pr_debug("%s: gpio controller %s isn't registered\n",
45 root->full_name, gpio->full_name);
46 ret = -ENODEV;
47 goto err1;
48 }
49
50 ret = of_gc->xlate(of_gc, root, gpio_spec, &flags);
51 if (ret < 0)
52 goto err1;
53
54 ret += of_gc->gc.base;
55err1:
56 of_node_put(gpio);
57err0:
58 pr_debug("%s exited with status %d\n", __func__, ret);
59 return ret;
60}
61
62void of_platform_reset_gpio_probe(void)
63{
64 int ret;
65 handle = of_reset_gpio_handle();
66
67 if (!gpio_is_valid(handle)) {
68 printk(KERN_INFO "Skipping unavailable RESET gpio %d (%s)\n",
69 handle, "reset");
70 }
71
72 ret = gpio_request(handle, "reset");
73 if (ret < 0) {
74 printk(KERN_INFO "GPIO pin is already allocated\n");
75 return;
76 }
77
78 /* get current setup value */
79 reset_val = gpio_get_value(handle);
80 /* FIXME maybe worth to perform any action */
81 pr_debug("Reset: Gpio output state: 0x%x\n", reset_val);
82
83 /* Setup GPIO as output */
84 ret = gpio_direction_output(handle, 0);
85 if (ret < 0)
86 goto err;
87
88 /* Setup output direction */
89 gpio_set_value(handle, 0);
90
91 printk(KERN_INFO "RESET: Registered gpio device: %d, current val: %d\n",
92 handle, reset_val);
93 return;
94err:
95 gpio_free(handle);
96 return;
97}
98
99
100static void gpio_system_reset(void)
101{
102 gpio_set_value(handle, 1 - reset_val);
103}
104#else
105#define gpio_system_reset() do {} while (0)
106void of_platform_reset_gpio_probe(void)
107{
108 return;
109}
110#endif
111
112void machine_restart(char *cmd)
113{
114 printk(KERN_NOTICE "Machine restart...\n");
115 gpio_system_reset();
116 dump_stack();
117 while (1)
118 ;
119}
120
121void machine_shutdown(void)
122{
123 printk(KERN_NOTICE "Machine shutdown...\n");
124 while (1)
125 ;
126}
127
128void machine_halt(void)
129{
130 printk(KERN_NOTICE "Machine halt...\n");
131 while (1)
132 ;
133}
134
135void machine_power_off(void)
136{
137 printk(KERN_NOTICE "Machine power off...\n");
138 while (1)
139 ;
140}
diff --git a/arch/microblaze/kernel/setup.c b/arch/microblaze/kernel/setup.c
index 8c1e0f4dcf18..17c98dbcec88 100644
--- a/arch/microblaze/kernel/setup.c
+++ b/arch/microblaze/kernel/setup.c
@@ -22,7 +22,10 @@
22#include <linux/io.h> 22#include <linux/io.h>
23#include <linux/bug.h> 23#include <linux/bug.h>
24#include <linux/param.h> 24#include <linux/param.h>
25#include <linux/pci.h>
25#include <linux/cache.h> 26#include <linux/cache.h>
27#include <linux/of_platform.h>
28#include <linux/dma-mapping.h>
26#include <asm/cacheflush.h> 29#include <asm/cacheflush.h>
27#include <asm/entry.h> 30#include <asm/entry.h>
28#include <asm/cpuinfo.h> 31#include <asm/cpuinfo.h>
@@ -52,16 +55,12 @@ void __init setup_arch(char **cmdline_p)
52 /* irq_early_init(); */ 55 /* irq_early_init(); */
53 setup_cpuinfo(); 56 setup_cpuinfo();
54 57
55 __invalidate_icache_all(); 58 microblaze_cache_init();
56 __enable_icache();
57
58 __invalidate_dcache_all();
59 __enable_dcache();
60
61 panic_timeout = 120;
62 59
63 setup_memory(); 60 setup_memory();
64 61
62 xilinx_pci_init();
63
65#if defined(CONFIG_SELFMOD_INTC) || defined(CONFIG_SELFMOD_TIMER) 64#if defined(CONFIG_SELFMOD_INTC) || defined(CONFIG_SELFMOD_TIMER)
66 printk(KERN_NOTICE "Self modified code enable\n"); 65 printk(KERN_NOTICE "Self modified code enable\n");
67#endif 66#endif
@@ -93,6 +92,12 @@ inline unsigned get_romfs_len(unsigned *addr)
93} 92}
94#endif /* CONFIG_MTD_UCLINUX_EBSS */ 93#endif /* CONFIG_MTD_UCLINUX_EBSS */
95 94
95#if defined(CONFIG_EARLY_PRINTK) && defined(CONFIG_SERIAL_UARTLITE_CONSOLE)
96#define eprintk early_printk
97#else
98#define eprintk printk
99#endif
100
96void __init machine_early_init(const char *cmdline, unsigned int ram, 101void __init machine_early_init(const char *cmdline, unsigned int ram,
97 unsigned int fdt, unsigned int msr) 102 unsigned int fdt, unsigned int msr)
98{ 103{
@@ -131,6 +136,8 @@ void __init machine_early_init(const char *cmdline, unsigned int ram,
131 strlcpy(cmd_line, cmdline, COMMAND_LINE_SIZE); 136 strlcpy(cmd_line, cmdline, COMMAND_LINE_SIZE);
132#endif 137#endif
133 138
139 lockdep_init();
140
134/* initialize device tree for usage in early_printk */ 141/* initialize device tree for usage in early_printk */
135 early_init_devtree((void *)_fdt_start); 142 early_init_devtree((void *)_fdt_start);
136 143
@@ -138,32 +145,32 @@ void __init machine_early_init(const char *cmdline, unsigned int ram,
138 setup_early_printk(NULL); 145 setup_early_printk(NULL);
139#endif 146#endif
140 147
141 early_printk("Ramdisk addr 0x%08x, ", ram); 148 eprintk("Ramdisk addr 0x%08x, ", ram);
142 if (fdt) 149 if (fdt)
143 early_printk("FDT at 0x%08x\n", fdt); 150 eprintk("FDT at 0x%08x\n", fdt);
144 else 151 else
145 early_printk("Compiled-in FDT at 0x%08x\n", 152 eprintk("Compiled-in FDT at 0x%08x\n",
146 (unsigned int)_fdt_start); 153 (unsigned int)_fdt_start);
147 154
148#ifdef CONFIG_MTD_UCLINUX 155#ifdef CONFIG_MTD_UCLINUX
149 early_printk("Found romfs @ 0x%08x (0x%08x)\n", 156 eprintk("Found romfs @ 0x%08x (0x%08x)\n",
150 romfs_base, romfs_size); 157 romfs_base, romfs_size);
151 early_printk("#### klimit %p ####\n", old_klimit); 158 eprintk("#### klimit %p ####\n", old_klimit);
152 BUG_ON(romfs_size < 0); /* What else can we do? */ 159 BUG_ON(romfs_size < 0); /* What else can we do? */
153 160
154 early_printk("Moved 0x%08x bytes from 0x%08x to 0x%08x\n", 161 eprintk("Moved 0x%08x bytes from 0x%08x to 0x%08x\n",
155 romfs_size, romfs_base, (unsigned)&_ebss); 162 romfs_size, romfs_base, (unsigned)&_ebss);
156 163
157 early_printk("New klimit: 0x%08x\n", (unsigned)klimit); 164 eprintk("New klimit: 0x%08x\n", (unsigned)klimit);
158#endif 165#endif
159 166
160#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR 167#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
161 if (msr) 168 if (msr)
162 early_printk("!!!Your kernel has setup MSR instruction but " 169 eprintk("!!!Your kernel has setup MSR instruction but "
163 "CPU don't have it %d\n", msr); 170 "CPU don't have it %d\n", msr);
164#else 171#else
165 if (!msr) 172 if (!msr)
166 early_printk("!!!Your kernel not setup MSR instruction but " 173 eprintk("!!!Your kernel not setup MSR instruction but "
167 "CPU have it %d\n", msr); 174 "CPU have it %d\n", msr);
168#endif 175#endif
169 176
@@ -187,31 +194,36 @@ static int microblaze_debugfs_init(void)
187arch_initcall(microblaze_debugfs_init); 194arch_initcall(microblaze_debugfs_init);
188#endif 195#endif
189 196
190void machine_restart(char *cmd) 197static int dflt_bus_notify(struct notifier_block *nb,
198 unsigned long action, void *data)
191{ 199{
192 printk(KERN_NOTICE "Machine restart...\n"); 200 struct device *dev = data;
193 dump_stack();
194 while (1)
195 ;
196}
197 201
198void machine_shutdown(void) 202 /* We are only intereted in device addition */
199{ 203 if (action != BUS_NOTIFY_ADD_DEVICE)
200 printk(KERN_NOTICE "Machine shutdown...\n"); 204 return 0;
201 while (1)
202 ;
203}
204 205
205void machine_halt(void) 206 set_dma_ops(dev, &dma_direct_ops);
206{ 207
207 printk(KERN_NOTICE "Machine halt...\n"); 208 return NOTIFY_DONE;
208 while (1)
209 ;
210} 209}
211 210
212void machine_power_off(void) 211static struct notifier_block dflt_plat_bus_notifier = {
212 .notifier_call = dflt_bus_notify,
213 .priority = INT_MAX,
214};
215
216static struct notifier_block dflt_of_bus_notifier = {
217 .notifier_call = dflt_bus_notify,
218 .priority = INT_MAX,
219};
220
221static int __init setup_bus_notifier(void)
213{ 222{
214 printk(KERN_NOTICE "Machine power off...\n"); 223 bus_register_notifier(&platform_bus_type, &dflt_plat_bus_notifier);
215 while (1) 224 bus_register_notifier(&of_platform_bus_type, &dflt_of_bus_notifier);
216 ; 225
226 return 0;
217} 227}
228
229arch_initcall(setup_bus_notifier);
diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c
index 1c80e4fc40ce..d8d3bb396cd6 100644
--- a/arch/microblaze/kernel/signal.c
+++ b/arch/microblaze/kernel/signal.c
@@ -44,7 +44,6 @@
44 44
45asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset, int in_sycall); 45asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset, int in_sycall);
46 46
47
48asmlinkage long 47asmlinkage long
49sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss, 48sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
50 struct pt_regs *regs) 49 struct pt_regs *regs)
@@ -176,6 +175,11 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
176 struct rt_sigframe __user *frame; 175 struct rt_sigframe __user *frame;
177 int err = 0; 176 int err = 0;
178 int signal; 177 int signal;
178 unsigned long address = 0;
179#ifdef CONFIG_MMU
180 pmd_t *pmdp;
181 pte_t *ptep;
182#endif
179 183
180 frame = get_sigframe(ka, regs, sizeof(*frame)); 184 frame = get_sigframe(ka, regs, sizeof(*frame));
181 185
@@ -216,8 +220,29 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
216 Negative 8 offset because return is rtsd r15, 8 */ 220 Negative 8 offset because return is rtsd r15, 8 */
217 regs->r15 = ((unsigned long)frame->tramp)-8; 221 regs->r15 = ((unsigned long)frame->tramp)-8;
218 222
219 __invalidate_cache_sigtramp((unsigned long)frame->tramp); 223 address = ((unsigned long)frame->tramp);
220 224#ifdef CONFIG_MMU
225 pmdp = pmd_offset(pud_offset(
226 pgd_offset(current->mm, address),
227 address), address);
228
229 preempt_disable();
230 ptep = pte_offset_map(pmdp, address);
231 if (pte_present(*ptep)) {
232 address = (unsigned long) page_address(pte_page(*ptep));
233 /* MS: I need add offset in page */
234 address += ((unsigned long)frame->tramp) & ~PAGE_MASK;
235 /* MS address is virtual */
236 address = virt_to_phys(address);
237 invalidate_icache_range(address, address + 8);
238 flush_dcache_range(address, address + 8);
239 }
240 pte_unmap(ptep);
241 preempt_enable();
242#else
243 flush_icache_range(address, address + 8);
244 flush_dcache_range(address, address + 8);
245#endif
221 if (err) 246 if (err)
222 goto give_sigsegv; 247 goto give_sigsegv;
223 248
@@ -233,6 +258,10 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
233 258
234 set_fs(USER_DS); 259 set_fs(USER_DS);
235 260
261 /* the tracer may want to single-step inside the handler */
262 if (test_thread_flag(TIF_SINGLESTEP))
263 ptrace_notify(SIGTRAP);
264
236#ifdef DEBUG_SIG 265#ifdef DEBUG_SIG
237 printk(KERN_INFO "SIG deliver (%s:%d): sp=%p pc=%08lx\n", 266 printk(KERN_INFO "SIG deliver (%s:%d): sp=%p pc=%08lx\n",
238 current->comm, current->pid, frame, regs->pc); 267 current->comm, current->pid, frame, regs->pc);
diff --git a/arch/microblaze/kernel/stacktrace.c b/arch/microblaze/kernel/stacktrace.c
new file mode 100644
index 000000000000..123692f22647
--- /dev/null
+++ b/arch/microblaze/kernel/stacktrace.c
@@ -0,0 +1,65 @@
1/*
2 * Stack trace support for Microblaze.
3 *
4 * Copyright (C) 2009 Michal Simek <monstr@monstr.eu>
5 * Copyright (C) 2009 PetaLogix
6 *
7 * This file is subject to the terms and conditions of the GNU General Public
8 * License. See the file "COPYING" in the main directory of this archive
9 * for more details.
10 */
11
12#include <linux/sched.h>
13#include <linux/stacktrace.h>
14#include <linux/thread_info.h>
15#include <linux/ptrace.h>
16#include <linux/module.h>
17
18/* FIXME initial support */
19void save_stack_trace(struct stack_trace *trace)
20{
21 unsigned long *sp;
22 unsigned long addr;
23 asm("addik %0, r1, 0" : "=r" (sp));
24
25 while (!kstack_end(sp)) {
26 addr = *sp++;
27 if (__kernel_text_address(addr)) {
28 if (trace->skip > 0)
29 trace->skip--;
30 else
31 trace->entries[trace->nr_entries++] = addr;
32
33 if (trace->nr_entries >= trace->max_entries)
34 break;
35 }
36 }
37}
38EXPORT_SYMBOL_GPL(save_stack_trace);
39
40void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
41{
42 unsigned int *sp;
43 unsigned long addr;
44
45 struct thread_info *ti = task_thread_info(tsk);
46
47 if (tsk == current)
48 asm("addik %0, r1, 0" : "=r" (sp));
49 else
50 sp = (unsigned int *)ti->cpu_context.r1;
51
52 while (!kstack_end(sp)) {
53 addr = *sp++;
54 if (__kernel_text_address(addr)) {
55 if (trace->skip > 0)
56 trace->skip--;
57 else
58 trace->entries[trace->nr_entries++] = addr;
59
60 if (trace->nr_entries >= trace->max_entries)
61 break;
62 }
63 }
64}
65EXPORT_SYMBOL_GPL(save_stack_trace_tsk);
diff --git a/arch/microblaze/kernel/sys_microblaze.c b/arch/microblaze/kernel/sys_microblaze.c
index 07cabed4b947..f4e00b7f1259 100644
--- a/arch/microblaze/kernel/sys_microblaze.c
+++ b/arch/microblaze/kernel/sys_microblaze.c
@@ -30,6 +30,7 @@
30#include <linux/semaphore.h> 30#include <linux/semaphore.h>
31#include <linux/uaccess.h> 31#include <linux/uaccess.h>
32#include <linux/unistd.h> 32#include <linux/unistd.h>
33#include <linux/slab.h>
33 34
34#include <asm/syscalls.h> 35#include <asm/syscalls.h>
35 36
@@ -62,46 +63,14 @@ out:
62 return error; 63 return error;
63} 64}
64 65
65asmlinkage long
66sys_mmap2(unsigned long addr, unsigned long len,
67 unsigned long prot, unsigned long flags,
68 unsigned long fd, unsigned long pgoff)
69{
70 struct file *file = NULL;
71 int ret = -EBADF;
72
73 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
74 if (!(flags & MAP_ANONYMOUS)) {
75 file = fget(fd);
76 if (!file) {
77 printk(KERN_INFO "no fd in mmap\r\n");
78 goto out;
79 }
80 }
81
82 down_write(&current->mm->mmap_sem);
83 ret = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
84 up_write(&current->mm->mmap_sem);
85 if (file)
86 fput(file);
87out:
88 return ret;
89}
90
91asmlinkage long sys_mmap(unsigned long addr, unsigned long len, 66asmlinkage long sys_mmap(unsigned long addr, unsigned long len,
92 unsigned long prot, unsigned long flags, 67 unsigned long prot, unsigned long flags,
93 unsigned long fd, off_t pgoff) 68 unsigned long fd, off_t pgoff)
94{ 69{
95 int err = -EINVAL; 70 if (pgoff & ~PAGE_MASK)
96 71 return -EINVAL;
97 if (pgoff & ~PAGE_MASK) {
98 printk(KERN_INFO "no pagemask in mmap\r\n");
99 goto out;
100 }
101 72
102 err = sys_mmap2(addr, len, prot, flags, fd, pgoff >> PAGE_SHIFT); 73 return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff >> PAGE_SHIFT);
103out:
104 return err;
105} 74}
106 75
107/* 76/*
diff --git a/arch/microblaze/kernel/syscall_table.S b/arch/microblaze/kernel/syscall_table.S
index ecec19155135..03376dc814c9 100644
--- a/arch/microblaze/kernel/syscall_table.S
+++ b/arch/microblaze/kernel/syscall_table.S
@@ -183,7 +183,7 @@ ENTRY(sys_call_table)
183 .long sys_rt_sigpending 183 .long sys_rt_sigpending
184 .long sys_rt_sigtimedwait 184 .long sys_rt_sigtimedwait
185 .long sys_rt_sigqueueinfo 185 .long sys_rt_sigqueueinfo
186 .long sys_rt_sigsuspend_wrapper 186 .long sys_rt_sigsuspend
187 .long sys_pread64 /* 180 */ 187 .long sys_pread64 /* 180 */
188 .long sys_pwrite64 188 .long sys_pwrite64
189 .long sys_chown 189 .long sys_chown
@@ -196,7 +196,7 @@ ENTRY(sys_call_table)
196 .long sys_ni_syscall /* reserved for streams2 */ 196 .long sys_ni_syscall /* reserved for streams2 */
197 .long sys_vfork /* 190 */ 197 .long sys_vfork /* 190 */
198 .long sys_getrlimit 198 .long sys_getrlimit
199 .long sys_mmap2 /* mmap2 */ 199 .long sys_mmap_pgoff /* mmap2 */
200 .long sys_truncate64 200 .long sys_truncate64
201 .long sys_ftruncate64 201 .long sys_ftruncate64
202 .long sys_stat64 /* 195 */ 202 .long sys_stat64 /* 195 */
@@ -303,7 +303,7 @@ ENTRY(sys_call_table)
303 .long sys_mkdirat 303 .long sys_mkdirat
304 .long sys_mknodat 304 .long sys_mknodat
305 .long sys_fchownat 305 .long sys_fchownat
306 .long sys_ni_syscall 306 .long sys_futimesat
307 .long sys_fstatat64 /* 300 */ 307 .long sys_fstatat64 /* 300 */
308 .long sys_unlinkat 308 .long sys_unlinkat
309 .long sys_renameat 309 .long sys_renameat
@@ -366,8 +366,9 @@ ENTRY(sys_call_table)
366 .long sys_shutdown 366 .long sys_shutdown
367 .long sys_sendmsg /* 360 */ 367 .long sys_sendmsg /* 360 */
368 .long sys_recvmsg 368 .long sys_recvmsg
369 .long sys_ni_syscall 369 .long sys_accept4
370 .long sys_ni_syscall 370 .long sys_ni_syscall
371 .long sys_ni_syscall 371 .long sys_ni_syscall
372 .long sys_rt_tgsigqueueinfo /* 365 */ 372 .long sys_rt_tgsigqueueinfo /* 365 */
373 .long sys_perf_event_open 373 .long sys_perf_event_open
374 .long sys_recvmmsg
diff --git a/arch/microblaze/kernel/timer.c b/arch/microblaze/kernel/timer.c
index 5499deae7fa6..ed61b2f17719 100644
--- a/arch/microblaze/kernel/timer.c
+++ b/arch/microblaze/kernel/timer.c
@@ -183,6 +183,31 @@ static cycle_t microblaze_read(struct clocksource *cs)
183 return (cycle_t) (in_be32(TIMER_BASE + TCR1)); 183 return (cycle_t) (in_be32(TIMER_BASE + TCR1));
184} 184}
185 185
186static struct timecounter microblaze_tc = {
187 .cc = NULL,
188};
189
190static cycle_t microblaze_cc_read(const struct cyclecounter *cc)
191{
192 return microblaze_read(NULL);
193}
194
195static struct cyclecounter microblaze_cc = {
196 .read = microblaze_cc_read,
197 .mask = CLOCKSOURCE_MASK(32),
198 .shift = 24,
199};
200
201int __init init_microblaze_timecounter(void)
202{
203 microblaze_cc.mult = div_sc(cpuinfo.cpu_clock_freq, NSEC_PER_SEC,
204 microblaze_cc.shift);
205
206 timecounter_init(&microblaze_tc, &microblaze_cc, sched_clock());
207
208 return 0;
209}
210
186static struct clocksource clocksource_microblaze = { 211static struct clocksource clocksource_microblaze = {
187 .name = "microblaze_clocksource", 212 .name = "microblaze_clocksource",
188 .rating = 300, 213 .rating = 300,
@@ -204,6 +229,9 @@ static int __init microblaze_clocksource_init(void)
204 out_be32(TIMER_BASE + TCSR1, in_be32(TIMER_BASE + TCSR1) & ~TCSR_ENT); 229 out_be32(TIMER_BASE + TCSR1, in_be32(TIMER_BASE + TCSR1) & ~TCSR_ENT);
205 /* start timer1 - up counting without interrupt */ 230 /* start timer1 - up counting without interrupt */
206 out_be32(TIMER_BASE + TCSR1, TCSR_TINT|TCSR_ENT|TCSR_ARHT); 231 out_be32(TIMER_BASE + TCSR1, TCSR_TINT|TCSR_ENT|TCSR_ARHT);
232
233 /* register timecounter - for ftrace support */
234 init_microblaze_timecounter();
207 return 0; 235 return 0;
208} 236}
209 237
diff --git a/arch/microblaze/kernel/traps.c b/arch/microblaze/kernel/traps.c
index eaaaf805f31b..75e49202a5ed 100644
--- a/arch/microblaze/kernel/traps.c
+++ b/arch/microblaze/kernel/traps.c
@@ -22,13 +22,11 @@ void trap_init(void)
22 __enable_hw_exceptions(); 22 __enable_hw_exceptions();
23} 23}
24 24
25static int kstack_depth_to_print = 24; 25static unsigned long kstack_depth_to_print = 24;
26 26
27static int __init kstack_setup(char *s) 27static int __init kstack_setup(char *s)
28{ 28{
29 kstack_depth_to_print = strict_strtoul(s, 0, NULL); 29 return !strict_strtoul(s, 0, &kstack_depth_to_print);
30
31 return 1;
32} 30}
33__setup("kstack=", kstack_setup); 31__setup("kstack=", kstack_setup);
34 32
@@ -97,37 +95,3 @@ void dump_stack(void)
97 show_stack(NULL, NULL); 95 show_stack(NULL, NULL);
98} 96}
99EXPORT_SYMBOL(dump_stack); 97EXPORT_SYMBOL(dump_stack);
100
101#ifdef CONFIG_MMU
102void __bug(const char *file, int line, void *data)
103{
104 if (data)
105 printk(KERN_CRIT "kernel BUG at %s:%d (data = %p)!\n",
106 file, line, data);
107 else
108 printk(KERN_CRIT "kernel BUG at %s:%d!\n", file, line);
109
110 machine_halt();
111}
112
113int bad_trap(int trap_num, struct pt_regs *regs)
114{
115 printk(KERN_CRIT
116 "unimplemented trap %d called at 0x%08lx, pid %d!\n",
117 trap_num, regs->pc, current->pid);
118 return -ENOSYS;
119}
120
121int debug_trap(struct pt_regs *regs)
122{
123 int i;
124 printk(KERN_CRIT "debug trap\n");
125 for (i = 0; i < 32; i++) {
126 /* printk("r%i:%08X\t",i,regs->gpr[i]); */
127 if ((i % 4) == 3)
128 printk(KERN_CRIT "\n");
129 }
130 printk(KERN_CRIT "pc:%08lX\tmsr:%08lX\n", regs->pc, regs->msr);
131 return -ENOSYS;
132}
133#endif
diff --git a/arch/microblaze/kernel/vmlinux.lds.S b/arch/microblaze/kernel/vmlinux.lds.S
index e704188d7855..db72d7124602 100644
--- a/arch/microblaze/kernel/vmlinux.lds.S
+++ b/arch/microblaze/kernel/vmlinux.lds.S
@@ -24,13 +24,15 @@ SECTIONS {
24 .text : AT(ADDR(.text) - LOAD_OFFSET) { 24 .text : AT(ADDR(.text) - LOAD_OFFSET) {
25 _text = . ; 25 _text = . ;
26 _stext = . ; 26 _stext = . ;
27 *(.text .text.*) 27 HEAD_TEXT
28 TEXT_TEXT
28 *(.fixup) 29 *(.fixup)
29 EXIT_TEXT 30 EXIT_TEXT
30 EXIT_CALL 31 EXIT_CALL
31 SCHED_TEXT 32 SCHED_TEXT
32 LOCK_TEXT 33 LOCK_TEXT
33 KPROBES_TEXT 34 KPROBES_TEXT
35 IRQENTRY_TEXT
34 . = ALIGN (4) ; 36 . = ALIGN (4) ;
35 _etext = . ; 37 _etext = . ;
36 } 38 }
@@ -86,6 +88,7 @@ SECTIONS {
86 _KERNEL_SDA_BASE_ = _ssro + (_ssro_size / 2) ; 88 _KERNEL_SDA_BASE_ = _ssro + (_ssro_size / 2) ;
87 } 89 }
88 90
91 . = ALIGN(PAGE_SIZE);
89 __init_begin = .; 92 __init_begin = .;
90 93
91 INIT_TEXT_SECTION(PAGE_SIZE) 94 INIT_TEXT_SECTION(PAGE_SIZE)
generated by cgit v1.2.2 (git 2.25.0) at 2026-01-14 18:39:51 -0500