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authorLinus Torvalds <torvalds@g5.osdl.org>2006-06-29 14:32:34 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-29 14:32:34 -0400
commit3aa590c6b7c89d844f81c2e96f295cf2c6967773 (patch)
tree6f18b295b1ff4cd7fd1880db6f56721599d64439 /arch/powerpc/kernel
parent4d3ce21fa9d2eaeda113aa2f9c2da80d972bef64 (diff)
parent339d76c54336443f5050b00172beb675f35e3be0 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (43 commits) [POWERPC] Use little-endian bit from firmware ibm,pa-features property [POWERPC] Make sure smp_processor_id works very early in boot [POWERPC] U4 DART improvements [POWERPC] todc: add support for Time-Of-Day-Clock [POWERPC] Make lparcfg.c work when both iseries and pseries are selected [POWERPC] Fix idr locking in init_new_context [POWERPC] mpc7448hpc2 (taiga) board config file [POWERPC] Add tsi108 pci and platform device data register function [POWERPC] Add general support for mpc7448hpc2 (Taiga) platform [POWERPC] Correct the MAX_CONTEXT definition powerpc: minor cleanups for mpc86xx [POWERPC] Make sure we select CONFIG_NEW_LEDS if ADB_PMU_LED is set [POWERPC] Simplify the code defining the 64-bit CPU features [POWERPC] powerpc: kconfig warning fix [POWERPC] Consolidate some of kernel/misc*.S [POWERPC] Remove unused function call_with_mmu_off [POWERPC] update asm-powerpc/time.h [POWERPC] Clean up it_lp_queue.h [POWERPC] Skip the "copy down" of the kernel if it is already at zero. [POWERPC] Add the use of the firmware soft-reset-nmi to kdump. ...
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r--arch/powerpc/kernel/Makefile3
-rw-r--r--arch/powerpc/kernel/cpu_setup_power4.S14
-rw-r--r--arch/powerpc/kernel/cputable.c12
-rw-r--r--arch/powerpc/kernel/crash.c147
-rw-r--r--arch/powerpc/kernel/head_64.S62
-rw-r--r--arch/powerpc/kernel/iommu.c30
-rw-r--r--arch/powerpc/kernel/legacy_serial.c11
-rw-r--r--arch/powerpc/kernel/lparcfg.c147
-rw-r--r--arch/powerpc/kernel/machine_kexec_64.c4
-rw-r--r--arch/powerpc/kernel/misc.S203
-rw-r--r--arch/powerpc/kernel/misc_32.S156
-rw-r--r--arch/powerpc/kernel/misc_64.S223
-rw-r--r--arch/powerpc/kernel/paca.c1
-rw-r--r--arch/powerpc/kernel/prom.c49
-rw-r--r--arch/powerpc/kernel/rtas.c119
-rw-r--r--arch/powerpc/kernel/setup_64.c22
-rw-r--r--arch/powerpc/kernel/traps.c27
-rw-r--r--arch/powerpc/kernel/udbg.c7
18 files changed, 638 insertions, 599 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 803858e86160..814f242aeb8c 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -50,7 +50,8 @@ extra-$(CONFIG_FSL_BOOKE) := head_fsl_booke.o
50extra-$(CONFIG_8xx) := head_8xx.o 50extra-$(CONFIG_8xx) := head_8xx.o
51extra-y += vmlinux.lds 51extra-y += vmlinux.lds
52 52
53obj-y += time.o prom.o traps.o setup-common.o udbg.o 53obj-y += time.o prom.o traps.o setup-common.o \
54 udbg.o misc.o
54obj-$(CONFIG_PPC32) += entry_32.o setup_32.o misc_32.o 55obj-$(CONFIG_PPC32) += entry_32.o setup_32.o misc_32.o
55obj-$(CONFIG_PPC64) += misc_64.o dma_64.o iommu.o 56obj-$(CONFIG_PPC64) += misc_64.o dma_64.o iommu.o
56obj-$(CONFIG_PPC_MULTIPLATFORM) += prom_init.o 57obj-$(CONFIG_PPC_MULTIPLATFORM) += prom_init.o
diff --git a/arch/powerpc/kernel/cpu_setup_power4.S b/arch/powerpc/kernel/cpu_setup_power4.S
index 271418308d53..1fc863261003 100644
--- a/arch/powerpc/kernel/cpu_setup_power4.S
+++ b/arch/powerpc/kernel/cpu_setup_power4.S
@@ -125,7 +125,12 @@ _GLOBAL(__save_cpu_setup)
125 cmpwi r0,0x44 125 cmpwi r0,0x44
126 bne 2f 126 bne 2f
127 127
1281: /* Save HID0,1,4 and 5 */ 1281: /* skip if not running in HV mode */
129 mfmsr r0
130 rldicl. r0,r0,4,63
131 beq 2f
132
133 /* Save HID0,1,4 and 5 */
129 mfspr r3,SPRN_HID0 134 mfspr r3,SPRN_HID0
130 std r3,CS_HID0(r5) 135 std r3,CS_HID0(r5)
131 mfspr r3,SPRN_HID1 136 mfspr r3,SPRN_HID1
@@ -159,7 +164,12 @@ _GLOBAL(__restore_cpu_setup)
159 cmpwi r0,0x44 164 cmpwi r0,0x44
160 bnelr 165 bnelr
161 166
1621: /* Before accessing memory, we make sure rm_ci is clear */ 1671: /* skip if not running in HV mode */
168 mfmsr r0
169 rldicl. r0,r0,4,63
170 beqlr
171
172 /* Before accessing memory, we make sure rm_ci is clear */
163 li r0,0 173 li r0,0
164 mfspr r3,SPRN_HID4 174 mfspr r3,SPRN_HID4
165 rldimi r3,r0,40,23 /* clear bit 23 (rm_ci) */ 175 rldimi r3,r0,40,23 /* clear bit 23 (rm_ci) */
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 1c114880dc05..abf7d42a8b07 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -722,18 +722,6 @@ struct cpu_spec cpu_specs[] = {
722 .oprofile_type = PPC_OPROFILE_G4, 722 .oprofile_type = PPC_OPROFILE_G4,
723 .platform = "ppc7450", 723 .platform = "ppc7450",
724 }, 724 },
725 { /* 8641 */
726 .pvr_mask = 0xffffffff,
727 .pvr_value = 0x80040010,
728 .cpu_name = "8641",
729 .cpu_features = CPU_FTRS_7447A,
730 .cpu_user_features = COMMON_USER | PPC_FEATURE_HAS_ALTIVEC_COMP,
731 .icache_bsize = 32,
732 .dcache_bsize = 32,
733 .num_pmcs = 6,
734 .cpu_setup = __setup_cpu_745x
735 },
736
737 { /* 82xx (8240, 8245, 8260 are all 603e cores) */ 725 { /* 82xx (8240, 8245, 8260 are all 603e cores) */
738 .pvr_mask = 0x7fff0000, 726 .pvr_mask = 0x7fff0000,
739 .pvr_value = 0x00810000, 727 .pvr_value = 0x00810000,
diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c
index 22ceba844bf4..358cecdc6aef 100644
--- a/arch/powerpc/kernel/crash.c
+++ b/arch/powerpc/kernel/crash.c
@@ -24,9 +24,11 @@
24#include <linux/init.h> 24#include <linux/init.h>
25#include <linux/irq.h> 25#include <linux/irq.h>
26#include <linux/types.h> 26#include <linux/types.h>
27#include <linux/irq.h>
27 28
28#include <asm/processor.h> 29#include <asm/processor.h>
29#include <asm/machdep.h> 30#include <asm/machdep.h>
31#include <asm/kexec.h>
30#include <asm/kdump.h> 32#include <asm/kdump.h>
31#include <asm/lmb.h> 33#include <asm/lmb.h>
32#include <asm/firmware.h> 34#include <asm/firmware.h>
@@ -41,6 +43,7 @@
41 43
42/* This keeps a track of which one is crashing cpu. */ 44/* This keeps a track of which one is crashing cpu. */
43int crashing_cpu = -1; 45int crashing_cpu = -1;
46static cpumask_t cpus_in_crash = CPU_MASK_NONE;
44 47
45static u32 *append_elf_note(u32 *buf, char *name, unsigned type, void *data, 48static u32 *append_elf_note(u32 *buf, char *name, unsigned type, void *data,
46 size_t data_len) 49 size_t data_len)
@@ -98,34 +101,66 @@ static void crash_save_this_cpu(struct pt_regs *regs, int cpu)
98} 101}
99 102
100#ifdef CONFIG_SMP 103#ifdef CONFIG_SMP
101static atomic_t waiting_for_crash_ipi; 104static atomic_t enter_on_soft_reset = ATOMIC_INIT(0);
102 105
103void crash_ipi_callback(struct pt_regs *regs) 106void crash_ipi_callback(struct pt_regs *regs)
104{ 107{
105 int cpu = smp_processor_id(); 108 int cpu = smp_processor_id();
106 109
107 if (cpu == crashing_cpu)
108 return;
109
110 if (!cpu_online(cpu)) 110 if (!cpu_online(cpu))
111 return; 111 return;
112 112
113 if (ppc_md.kexec_cpu_down)
114 ppc_md.kexec_cpu_down(1, 1);
115
116 local_irq_disable(); 113 local_irq_disable();
114 if (!cpu_isset(cpu, cpus_in_crash))
115 crash_save_this_cpu(regs, cpu);
116 cpu_set(cpu, cpus_in_crash);
117 117
118 crash_save_this_cpu(regs, cpu); 118 /*
119 atomic_dec(&waiting_for_crash_ipi); 119 * Entered via soft-reset - could be the kdump
120 * process is invoked using soft-reset or user activated
121 * it if some CPU did not respond to an IPI.
122 * For soft-reset, the secondary CPU can enter this func
123 * twice. 1 - using IPI, and 2. soft-reset.
124 * Tell the kexec CPU that entered via soft-reset and ready
125 * to go down.
126 */
127 if (cpu_isset(cpu, cpus_in_sr)) {
128 cpu_clear(cpu, cpus_in_sr);
129 atomic_inc(&enter_on_soft_reset);
130 }
131
132 /*
133 * Starting the kdump boot.
134 * This barrier is needed to make sure that all CPUs are stopped.
135 * If not, soft-reset will be invoked to bring other CPUs.
136 */
137 while (!cpu_isset(crashing_cpu, cpus_in_crash))
138 cpu_relax();
139
140 if (ppc_md.kexec_cpu_down)
141 ppc_md.kexec_cpu_down(1, 1);
120 kexec_smp_wait(); 142 kexec_smp_wait();
121 /* NOTREACHED */ 143 /* NOTREACHED */
122} 144}
123 145
124static void crash_kexec_prepare_cpus(void) 146/*
147 * Wait until all CPUs are entered via soft-reset.
148 */
149static void crash_soft_reset_check(int cpu)
150{
151 unsigned int ncpus = num_online_cpus() - 1;/* Excluding the panic cpu */
152
153 cpu_clear(cpu, cpus_in_sr);
154 while (atomic_read(&enter_on_soft_reset) != ncpus)
155 cpu_relax();
156}
157
158
159static void crash_kexec_prepare_cpus(int cpu)
125{ 160{
126 unsigned int msecs; 161 unsigned int msecs;
127 162
128 atomic_set(&waiting_for_crash_ipi, num_online_cpus() - 1); 163 unsigned int ncpus = num_online_cpus() - 1;/* Excluding the panic cpu */
129 164
130 crash_send_ipi(crash_ipi_callback); 165 crash_send_ipi(crash_ipi_callback);
131 smp_wmb(); 166 smp_wmb();
@@ -133,14 +168,13 @@ static void crash_kexec_prepare_cpus(void)
133 /* 168 /*
134 * FIXME: Until we will have the way to stop other CPUSs reliabally, 169 * FIXME: Until we will have the way to stop other CPUSs reliabally,
135 * the crash CPU will send an IPI and wait for other CPUs to 170 * the crash CPU will send an IPI and wait for other CPUs to
136 * respond. If not, proceed the kexec boot even though we failed to 171 * respond.
137 * capture other CPU states.
138 * Delay of at least 10 seconds. 172 * Delay of at least 10 seconds.
139 */ 173 */
140 printk(KERN_ALERT "Sending IPI to other cpus...\n"); 174 printk(KERN_EMERG "Sending IPI to other cpus...\n");
141 msecs = 10000; 175 msecs = 10000;
142 while ((atomic_read(&waiting_for_crash_ipi) > 0) && (--msecs > 0)) { 176 while ((cpus_weight(cpus_in_crash) < ncpus) && (--msecs > 0)) {
143 barrier(); 177 cpu_relax();
144 mdelay(1); 178 mdelay(1);
145 } 179 }
146 180
@@ -149,18 +183,71 @@ static void crash_kexec_prepare_cpus(void)
149 /* 183 /*
150 * FIXME: In case if we do not get all CPUs, one possibility: ask the 184 * FIXME: In case if we do not get all CPUs, one possibility: ask the
151 * user to do soft reset such that we get all. 185 * user to do soft reset such that we get all.
152 * IPI handler is already set by the panic cpu initially. Therefore, 186 * Soft-reset will be used until better mechanism is implemented.
153 * all cpus could invoke this handler from die() and the panic CPU 187 */
154 * will call machine_kexec() directly from this handler to do 188 if (cpus_weight(cpus_in_crash) < ncpus) {
155 * kexec boot. 189 printk(KERN_EMERG "done waiting: %d cpu(s) not responding\n",
190 ncpus - cpus_weight(cpus_in_crash));
191 printk(KERN_EMERG "Activate soft-reset to stop other cpu(s)\n");
192 cpus_in_sr = CPU_MASK_NONE;
193 atomic_set(&enter_on_soft_reset, 0);
194 while (cpus_weight(cpus_in_crash) < ncpus)
195 cpu_relax();
196 }
197 /*
198 * Make sure all CPUs are entered via soft-reset if the kdump is
199 * invoked using soft-reset.
156 */ 200 */
157 if (atomic_read(&waiting_for_crash_ipi)) 201 if (cpu_isset(cpu, cpus_in_sr))
158 printk(KERN_ALERT "done waiting: %d cpus not responding\n", 202 crash_soft_reset_check(cpu);
159 atomic_read(&waiting_for_crash_ipi));
160 /* Leave the IPI callback set */ 203 /* Leave the IPI callback set */
161} 204}
205
206/*
207 * This function will be called by secondary cpus or by kexec cpu
208 * if soft-reset is activated to stop some CPUs.
209 */
210void crash_kexec_secondary(struct pt_regs *regs)
211{
212 int cpu = smp_processor_id();
213 unsigned long flags;
214 int msecs = 5;
215
216 local_irq_save(flags);
217 /* Wait 5ms if the kexec CPU is not entered yet. */
218 while (crashing_cpu < 0) {
219 if (--msecs < 0) {
220 /*
221 * Either kdump image is not loaded or
222 * kdump process is not started - Probably xmon
223 * exited using 'x'(exit and recover) or
224 * kexec_should_crash() failed for all running tasks.
225 */
226 cpu_clear(cpu, cpus_in_sr);
227 local_irq_restore(flags);
228 return;
229 }
230 mdelay(1);
231 cpu_relax();
232 }
233 if (cpu == crashing_cpu) {
234 /*
235 * Panic CPU will enter this func only via soft-reset.
236 * Wait until all secondary CPUs entered and
237 * then start kexec boot.
238 */
239 crash_soft_reset_check(cpu);
240 cpu_set(crashing_cpu, cpus_in_crash);
241 if (ppc_md.kexec_cpu_down)
242 ppc_md.kexec_cpu_down(1, 0);
243 machine_kexec(kexec_crash_image);
244 /* NOTREACHED */
245 }
246 crash_ipi_callback(regs);
247}
248
162#else 249#else
163static void crash_kexec_prepare_cpus(void) 250static void crash_kexec_prepare_cpus(int cpu)
164{ 251{
165 /* 252 /*
166 * move the secondarys to us so that we can copy 253 * move the secondarys to us so that we can copy
@@ -171,6 +258,10 @@ static void crash_kexec_prepare_cpus(void)
171 smp_release_cpus(); 258 smp_release_cpus();
172} 259}
173 260
261void crash_kexec_secondary(struct pt_regs *regs)
262{
263 cpus_in_sr = CPU_MASK_NONE;
264}
174#endif 265#endif
175 266
176void default_machine_crash_shutdown(struct pt_regs *regs) 267void default_machine_crash_shutdown(struct pt_regs *regs)
@@ -199,14 +290,14 @@ void default_machine_crash_shutdown(struct pt_regs *regs)
199 desc->chip->disable(irq); 290 desc->chip->disable(irq);
200 } 291 }
201 292
202 if (ppc_md.kexec_cpu_down)
203 ppc_md.kexec_cpu_down(1, 0);
204
205 /* 293 /*
206 * Make a note of crashing cpu. Will be used in machine_kexec 294 * Make a note of crashing cpu. Will be used in machine_kexec
207 * such that another IPI will not be sent. 295 * such that another IPI will not be sent.
208 */ 296 */
209 crashing_cpu = smp_processor_id(); 297 crashing_cpu = smp_processor_id();
210 crash_kexec_prepare_cpus();
211 crash_save_this_cpu(regs, crashing_cpu); 298 crash_save_this_cpu(regs, crashing_cpu);
299 crash_kexec_prepare_cpus(crashing_cpu);
300 cpu_set(crashing_cpu, cpus_in_crash);
301 if (ppc_md.kexec_cpu_down)
302 ppc_md.kexec_cpu_down(1, 0);
212} 303}
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 831acbdf2592..8cfd040d1f50 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -85,34 +85,6 @@ END_FTR_SECTION(0, 1)
85 /* Catch branch to 0 in real mode */ 85 /* Catch branch to 0 in real mode */
86 trap 86 trap
87 87
88#ifdef CONFIG_PPC_ISERIES
89 /*
90 * At offset 0x20, there is a pointer to iSeries LPAR data.
91 * This is required by the hypervisor
92 */
93 . = 0x20
94 .llong hvReleaseData-KERNELBASE
95
96 /*
97 * At offset 0x28 and 0x30 are offsets to the mschunks_map
98 * array (used by the iSeries LPAR debugger to do translation
99 * between physical addresses and absolute addresses) and
100 * to the pidhash table (also used by the debugger)
101 */
102 .llong mschunks_map-KERNELBASE
103 .llong 0 /* pidhash-KERNELBASE SFRXXX */
104
105 /* Offset 0x38 - Pointer to start of embedded System.map */
106 .globl embedded_sysmap_start
107embedded_sysmap_start:
108 .llong 0
109 /* Offset 0x40 - Pointer to end of embedded System.map */
110 .globl embedded_sysmap_end
111embedded_sysmap_end:
112 .llong 0
113
114#endif /* CONFIG_PPC_ISERIES */
115
116 /* Secondary processors spin on this value until it goes to 1. */ 88 /* Secondary processors spin on this value until it goes to 1. */
117 .globl __secondary_hold_spinloop 89 .globl __secondary_hold_spinloop
118__secondary_hold_spinloop: 90__secondary_hold_spinloop:
@@ -124,6 +96,15 @@ __secondary_hold_spinloop:
124__secondary_hold_acknowledge: 96__secondary_hold_acknowledge:
125 .llong 0x0 97 .llong 0x0
126 98
99#ifdef CONFIG_PPC_ISERIES
100 /*
101 * At offset 0x20, there is a pointer to iSeries LPAR data.
102 * This is required by the hypervisor
103 */
104 . = 0x20
105 .llong hvReleaseData-KERNELBASE
106#endif /* CONFIG_PPC_ISERIES */
107
127 . = 0x60 108 . = 0x60
128/* 109/*
129 * The following code is used on pSeries to hold secondary processors 110 * The following code is used on pSeries to hold secondary processors
@@ -1602,9 +1583,6 @@ _GLOBAL(__start_initialization_multiplatform)
1602 /* Setup some critical 970 SPRs before switching MMU off */ 1583 /* Setup some critical 970 SPRs before switching MMU off */
1603 bl .__970_cpu_preinit 1584 bl .__970_cpu_preinit
1604 1585
1605 /* cpu # */
1606 li r24,0
1607
1608 /* Switch off MMU if not already */ 1586 /* Switch off MMU if not already */
1609 LOAD_REG_IMMEDIATE(r4, .__after_prom_start - KERNELBASE) 1587 LOAD_REG_IMMEDIATE(r4, .__after_prom_start - KERNELBASE)
1610 add r4,r4,r30 1588 add r4,r4,r30
@@ -1683,6 +1661,9 @@ _STATIC(__after_prom_start)
1683 /* i.e. where we are running */ 1661 /* i.e. where we are running */
1684 /* the source addr */ 1662 /* the source addr */
1685 1663
1664 cmpdi r4,0 /* In some cases the loader may */
1665 beq .start_here_multiplatform /* have already put us at zero */
1666 /* so we can skip the copy. */
1686 LOAD_REG_IMMEDIATE(r5,copy_to_here) /* # bytes of memory to copy */ 1667 LOAD_REG_IMMEDIATE(r5,copy_to_here) /* # bytes of memory to copy */
1687 sub r5,r5,r27 1668 sub r5,r5,r27
1688 1669
@@ -1962,14 +1943,6 @@ _STATIC(start_here_common)
1962 li r3,0 1943 li r3,0
1963 bl .do_cpu_ftr_fixups 1944 bl .do_cpu_ftr_fixups
1964 1945
1965 LOAD_REG_IMMEDIATE(r26, boot_cpuid)
1966 lwz r26,0(r26)
1967
1968 LOAD_REG_IMMEDIATE(r24, paca) /* Get base vaddr of paca array */
1969 mulli r13,r26,PACA_SIZE /* Calculate vaddr of right paca */
1970 add r13,r13,r24 /* for this processor. */
1971 mtspr SPRN_SPRG3,r13
1972
1973 /* ptr to current */ 1946 /* ptr to current */
1974 LOAD_REG_IMMEDIATE(r4, init_task) 1947 LOAD_REG_IMMEDIATE(r4, init_task)
1975 std r4,PACACURRENT(r13) 1948 std r4,PACACURRENT(r13)
@@ -1995,17 +1968,6 @@ _STATIC(start_here_common)
1995 /* Not reached */ 1968 /* Not reached */
1996 BUG_OPCODE 1969 BUG_OPCODE
1997 1970
1998/* Put the paca pointer into r13 and SPRG3 */
1999_GLOBAL(setup_boot_paca)
2000 LOAD_REG_IMMEDIATE(r3, boot_cpuid)
2001 lwz r3,0(r3)
2002 LOAD_REG_IMMEDIATE(r4, paca) /* Get base vaddr of paca array */
2003 mulli r3,r3,PACA_SIZE /* Calculate vaddr of right paca */
2004 add r13,r3,r4 /* for this processor. */
2005 mtspr SPRN_SPRG3,r13
2006
2007 blr
2008
2009/* 1971/*
2010 * We put a few things here that have to be page-aligned. 1972 * We put a few things here that have to be page-aligned.
2011 * This stuff goes at the beginning of the bss, which is page-aligned. 1973 * This stuff goes at the beginning of the bss, which is page-aligned.
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 7cb77c20fc5d..3d677ac99659 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -38,6 +38,7 @@
38#include <asm/iommu.h> 38#include <asm/iommu.h>
39#include <asm/pci-bridge.h> 39#include <asm/pci-bridge.h>
40#include <asm/machdep.h> 40#include <asm/machdep.h>
41#include <asm/kdump.h>
41 42
42#define DBG(...) 43#define DBG(...)
43 44
@@ -440,8 +441,37 @@ struct iommu_table *iommu_init_table(struct iommu_table *tbl, int nid)
440 tbl->it_largehint = tbl->it_halfpoint; 441 tbl->it_largehint = tbl->it_halfpoint;
441 spin_lock_init(&tbl->it_lock); 442 spin_lock_init(&tbl->it_lock);
442 443
444#ifdef CONFIG_CRASH_DUMP
445 if (ppc_md.tce_get) {
446 unsigned long index, tceval;
447 unsigned long tcecount = 0;
448
449 /*
450 * Reserve the existing mappings left by the first kernel.
451 */
452 for (index = 0; index < tbl->it_size; index++) {
453 tceval = ppc_md.tce_get(tbl, index + tbl->it_offset);
454 /*
455 * Freed TCE entry contains 0x7fffffffffffffff on JS20
456 */
457 if (tceval && (tceval != 0x7fffffffffffffffUL)) {
458 __set_bit(index, tbl->it_map);
459 tcecount++;
460 }
461 }
462 if ((tbl->it_size - tcecount) < KDUMP_MIN_TCE_ENTRIES) {
463 printk(KERN_WARNING "TCE table is full; ");
464 printk(KERN_WARNING "freeing %d entries for the kdump boot\n",
465 KDUMP_MIN_TCE_ENTRIES);
466 for (index = tbl->it_size - KDUMP_MIN_TCE_ENTRIES;
467 index < tbl->it_size; index++)
468 __clear_bit(index, tbl->it_map);
469 }
470 }
471#else
443 /* Clear the hardware table in case firmware left allocations in it */ 472 /* Clear the hardware table in case firmware left allocations in it */
444 ppc_md.tce_free(tbl, tbl->it_offset, tbl->it_size); 473 ppc_md.tce_free(tbl, tbl->it_offset, tbl->it_size);
474#endif
445 475
446 if (!welcomed) { 476 if (!welcomed) {
447 printk(KERN_INFO "IOMMU table initialized, virtual merging %s\n", 477 printk(KERN_INFO "IOMMU table initialized, virtual merging %s\n",
diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c
index 6e67b5b49ba1..3a9b78d03542 100644
--- a/arch/powerpc/kernel/legacy_serial.c
+++ b/arch/powerpc/kernel/legacy_serial.c
@@ -302,6 +302,17 @@ void __init find_legacy_serial_ports(void)
302 of_node_put(isa); 302 of_node_put(isa);
303 } 303 }
304 304
305 /* First fill our array with tsi-bridge ports */
306 for (np = NULL; (np = of_find_compatible_node(np, "serial", "ns16550")) != NULL;) {
307 struct device_node *tsi = of_get_parent(np);
308 if (tsi && !strcmp(tsi->type, "tsi-bridge")) {
309 index = add_legacy_soc_port(np, np);
310 if (index >= 0 && np == stdout)
311 legacy_serial_console = index;
312 }
313 of_node_put(tsi);
314 }
315
305#ifdef CONFIG_PCI 316#ifdef CONFIG_PCI
306 /* Next, try to locate PCI ports */ 317 /* Next, try to locate PCI ports */
307 for (np = NULL; (np = of_find_all_nodes(np));) { 318 for (np = NULL; (np = of_find_all_nodes(np));) {
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index c02deaab26c7..73edc3c16137 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -45,11 +45,9 @@
45static struct proc_dir_entry *proc_ppc64_lparcfg; 45static struct proc_dir_entry *proc_ppc64_lparcfg;
46#define LPARCFG_BUFF_SIZE 4096 46#define LPARCFG_BUFF_SIZE 4096
47 47
48#ifdef CONFIG_PPC_ISERIES
49
50/* 48/*
51 * For iSeries legacy systems, the PPA purr function is available from the 49 * Track sum of all purrs across all processors. This is used to further
52 * emulated_time_base field in the paca. 50 * calculate usage values by different applications
53 */ 51 */
54static unsigned long get_purr(void) 52static unsigned long get_purr(void)
55{ 53{
@@ -57,48 +55,31 @@ static unsigned long get_purr(void)
57 int cpu; 55 int cpu;
58 56
59 for_each_possible_cpu(cpu) { 57 for_each_possible_cpu(cpu) {
60 sum_purr += lppaca[cpu].emulated_time_base; 58 if (firmware_has_feature(FW_FEATURE_ISERIES))
59 sum_purr += lppaca[cpu].emulated_time_base;
60 else {
61 struct cpu_usage *cu;
61 62
62#ifdef PURR_DEBUG 63 cu = &per_cpu(cpu_usage_array, cpu);
63 printk(KERN_INFO "get_purr for cpu (%d) has value (%ld) \n", 64 sum_purr += cu->current_tb;
64 cpu, lppaca[cpu].emulated_time_base); 65 }
65#endif
66 } 66 }
67 return sum_purr; 67 return sum_purr;
68} 68}
69 69
70#define lparcfg_write NULL 70#ifdef CONFIG_PPC_ISERIES
71 71
72/* 72/*
73 * Methods used to fetch LPAR data when running on an iSeries platform. 73 * Methods used to fetch LPAR data when running on an iSeries platform.
74 */ 74 */
75static int lparcfg_data(struct seq_file *m, void *v) 75static int iseries_lparcfg_data(struct seq_file *m, void *v)
76{ 76{
77 unsigned long pool_id, lp_index; 77 unsigned long pool_id;
78 int shared, entitled_capacity, max_entitled_capacity; 78 int shared, entitled_capacity, max_entitled_capacity;
79 int processors, max_processors; 79 int processors, max_processors;
80 unsigned long purr = get_purr(); 80 unsigned long purr = get_purr();
81 81
82 seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS);
83
84 shared = (int)(get_lppaca()->shared_proc); 82 shared = (int)(get_lppaca()->shared_proc);
85 seq_printf(m, "serial_number=%c%c%c%c%c%c%c\n",
86 e2a(xItExtVpdPanel.mfgID[2]),
87 e2a(xItExtVpdPanel.mfgID[3]),
88 e2a(xItExtVpdPanel.systemSerial[1]),
89 e2a(xItExtVpdPanel.systemSerial[2]),
90 e2a(xItExtVpdPanel.systemSerial[3]),
91 e2a(xItExtVpdPanel.systemSerial[4]),
92 e2a(xItExtVpdPanel.systemSerial[5]));
93
94 seq_printf(m, "system_type=%c%c%c%c\n",
95 e2a(xItExtVpdPanel.machineType[0]),
96 e2a(xItExtVpdPanel.machineType[1]),
97 e2a(xItExtVpdPanel.machineType[2]),
98 e2a(xItExtVpdPanel.machineType[3]));
99
100 lp_index = HvLpConfig_getLpIndex();
101 seq_printf(m, "partition_id=%d\n", (int)lp_index);
102 83
103 seq_printf(m, "system_active_processors=%d\n", 84 seq_printf(m, "system_active_processors=%d\n",
104 (int)HvLpConfig_getSystemPhysicalProcessors()); 85 (int)HvLpConfig_getSystemPhysicalProcessors());
@@ -137,6 +118,14 @@ static int lparcfg_data(struct seq_file *m, void *v)
137 118
138 return 0; 119 return 0;
139} 120}
121
122#else /* CONFIG_PPC_ISERIES */
123
124static int iseries_lparcfg_data(struct seq_file *m, void *v)
125{
126 return 0;
127}
128
140#endif /* CONFIG_PPC_ISERIES */ 129#endif /* CONFIG_PPC_ISERIES */
141 130
142#ifdef CONFIG_PPC_PSERIES 131#ifdef CONFIG_PPC_PSERIES
@@ -213,22 +202,6 @@ static void h_pic(unsigned long *pool_idle_time, unsigned long *num_procs)
213 log_plpar_hcall_return(rc, "H_PIC"); 202 log_plpar_hcall_return(rc, "H_PIC");
214} 203}
215 204
216/* Track sum of all purrs across all processors. This is used to further */
217/* calculate usage values by different applications */
218
219static unsigned long get_purr(void)
220{
221 unsigned long sum_purr = 0;
222 int cpu;
223 struct cpu_usage *cu;
224
225 for_each_possible_cpu(cpu) {
226 cu = &per_cpu(cpu_usage_array, cpu);
227 sum_purr += cu->current_tb;
228 }
229 return sum_purr;
230}
231
232#define SPLPAR_CHARACTERISTICS_TOKEN 20 205#define SPLPAR_CHARACTERISTICS_TOKEN 20
233#define SPLPAR_MAXLENGTH 1026*(sizeof(char)) 206#define SPLPAR_MAXLENGTH 1026*(sizeof(char))
234 207
@@ -333,35 +306,13 @@ static int lparcfg_count_active_processors(void)
333 return count; 306 return count;
334} 307}
335 308
336static int lparcfg_data(struct seq_file *m, void *v) 309static int pseries_lparcfg_data(struct seq_file *m, void *v)
337{ 310{
338 int partition_potential_processors; 311 int partition_potential_processors;
339 int partition_active_processors; 312 int partition_active_processors;
340 struct device_node *rootdn;
341 const char *model = "";
342 const char *system_id = "";
343 unsigned int *lp_index_ptr, lp_index = 0;
344 struct device_node *rtas_node; 313 struct device_node *rtas_node;
345 int *lrdrp = NULL; 314 int *lrdrp = NULL;
346 315
347 rootdn = find_path_device("/");
348 if (rootdn) {
349 model = get_property(rootdn, "model", NULL);
350 system_id = get_property(rootdn, "system-id", NULL);
351 lp_index_ptr = (unsigned int *)
352 get_property(rootdn, "ibm,partition-no", NULL);
353 if (lp_index_ptr)
354 lp_index = *lp_index_ptr;
355 }
356
357 seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS);
358
359 seq_printf(m, "serial_number=%s\n", system_id);
360
361 seq_printf(m, "system_type=%s\n", model);
362
363 seq_printf(m, "partition_id=%d\n", (int)lp_index);
364
365 rtas_node = find_path_device("/rtas"); 316 rtas_node = find_path_device("/rtas");
366 if (rtas_node) 317 if (rtas_node)
367 lrdrp = (int *)get_property(rtas_node, "ibm,lrdr-capacity", 318 lrdrp = (int *)get_property(rtas_node, "ibm,lrdr-capacity",
@@ -549,8 +500,61 @@ out:
549 return retval; 500 return retval;
550} 501}
551 502
503#else /* CONFIG_PPC_PSERIES */
504
505static int pseries_lparcfg_data(struct seq_file *m, void *v)
506{
507 return 0;
508}
509
510static ssize_t lparcfg_write(struct file *file, const char __user * buf,
511 size_t count, loff_t * off)
512{
513 return count;
514}
515
552#endif /* CONFIG_PPC_PSERIES */ 516#endif /* CONFIG_PPC_PSERIES */
553 517
518static int lparcfg_data(struct seq_file *m, void *v)
519{
520 struct device_node *rootdn;
521 const char *model = "";
522 const char *system_id = "";
523 const char *tmp;
524 unsigned int *lp_index_ptr, lp_index = 0;
525
526 seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS);
527
528 rootdn = find_path_device("/");
529 if (rootdn) {
530 tmp = get_property(rootdn, "model", NULL);
531 if (tmp) {
532 model = tmp;
533 /* Skip "IBM," - see platforms/iseries/dt.c */
534 if (firmware_has_feature(FW_FEATURE_ISERIES))
535 model += 4;
536 }
537 tmp = get_property(rootdn, "system-id", NULL);
538 if (tmp) {
539 system_id = tmp;
540 /* Skip "IBM," - see platforms/iseries/dt.c */
541 if (firmware_has_feature(FW_FEATURE_ISERIES))
542 system_id += 4;
543 }
544 lp_index_ptr = (unsigned int *)
545 get_property(rootdn, "ibm,partition-no", NULL);
546 if (lp_index_ptr)
547 lp_index = *lp_index_ptr;
548 }
549 seq_printf(m, "serial_number=%s\n", system_id);
550 seq_printf(m, "system_type=%s\n", model);
551 seq_printf(m, "partition_id=%d\n", (int)lp_index);
552
553 if (firmware_has_feature(FW_FEATURE_ISERIES))
554 return iseries_lparcfg_data(m, v);
555 return pseries_lparcfg_data(m, v);
556}
557
554static int lparcfg_open(struct inode *inode, struct file *file) 558static int lparcfg_open(struct inode *inode, struct file *file)
555{ 559{
556 return single_open(file, lparcfg_data, NULL); 560 return single_open(file, lparcfg_data, NULL);
@@ -569,7 +573,8 @@ int __init lparcfg_init(void)
569 mode_t mode = S_IRUSR | S_IRGRP | S_IROTH; 573 mode_t mode = S_IRUSR | S_IRGRP | S_IROTH;
570 574
571 /* Allow writing if we have FW_FEATURE_SPLPAR */ 575 /* Allow writing if we have FW_FEATURE_SPLPAR */
572 if (firmware_has_feature(FW_FEATURE_SPLPAR)) { 576 if (firmware_has_feature(FW_FEATURE_SPLPAR) &&
577 !firmware_has_feature(FW_FEATURE_ISERIES)) {
573 lparcfg_fops.write = lparcfg_write; 578 lparcfg_fops.write = lparcfg_write;
574 mode |= S_IWUSR; 579 mode |= S_IWUSR;
575 } 580 }
diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c
index a8fa04ef27cd..b438d45a068c 100644
--- a/arch/powerpc/kernel/machine_kexec_64.c
+++ b/arch/powerpc/kernel/machine_kexec_64.c
@@ -378,11 +378,13 @@ static void __init export_crashk_values(void)
378 of_node_put(node); 378 of_node_put(node);
379} 379}
380 380
381void __init kexec_setup(void) 381static int __init kexec_setup(void)
382{ 382{
383 export_htab_values(); 383 export_htab_values();
384 export_crashk_values(); 384 export_crashk_values();
385 return 0;
385} 386}
387__initcall(kexec_setup);
386 388
387static int __init early_parse_crashk(char *p) 389static int __init early_parse_crashk(char *p)
388{ 390{
diff --git a/arch/powerpc/kernel/misc.S b/arch/powerpc/kernel/misc.S
new file mode 100644
index 000000000000..fc23040d5a26
--- /dev/null
+++ b/arch/powerpc/kernel/misc.S
@@ -0,0 +1,203 @@
1/*
2 * This file contains miscellaneous low-level functions.
3 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
4 *
5 * Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
6 * and Paul Mackerras.
7 *
8 * Adapted for iSeries by Mike Corrigan (mikejc@us.ibm.com)
9 * PPC64 updates by Dave Engebretsen (engebret@us.ibm.com)
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 */
16#include <asm/ppc_asm.h>
17
18 .text
19
20#ifdef CONFIG_PPC64
21#define IN_SYNC twi 0,r5,0; isync
22#define EIEIO_32
23#define SYNC_64 sync
24#else /* CONFIG_PPC32 */
25#define IN_SYNC
26#define EIEIO_32 eieio
27#define SYNC_64
28#endif
29/*
30 * Returns (address we are running at) - (address we were linked at)
31 * for use before the text and data are mapped to KERNELBASE.
32 */
33
34_GLOBAL(reloc_offset)
35 mflr r0
36 bl 1f
371: mflr r3
38 LOAD_REG_IMMEDIATE(r4,1b)
39 subf r3,r4,r3
40 mtlr r0
41 blr
42
43/*
44 * add_reloc_offset(x) returns x + reloc_offset().
45 */
46_GLOBAL(add_reloc_offset)
47 mflr r0
48 bl 1f
491: mflr r5
50 LOAD_REG_IMMEDIATE(r4,1b)
51 subf r5,r4,r5
52 add r3,r3,r5
53 mtlr r0
54 blr
55
56/*
57 * I/O string operations
58 *
59 * insb(port, buf, len)
60 * outsb(port, buf, len)
61 * insw(port, buf, len)
62 * outsw(port, buf, len)
63 * insl(port, buf, len)
64 * outsl(port, buf, len)
65 * insw_ns(port, buf, len)
66 * outsw_ns(port, buf, len)
67 * insl_ns(port, buf, len)
68 * outsl_ns(port, buf, len)
69 *
70 * The *_ns versions don't do byte-swapping.
71 */
72_GLOBAL(_insb)
73 cmpwi 0,r5,0
74 mtctr r5
75 subi r4,r4,1
76 blelr-
7700: lbz r5,0(r3)
78 eieio
79 stbu r5,1(r4)
80 bdnz 00b
81 IN_SYNC
82 blr
83
84_GLOBAL(_outsb)
85 cmpwi 0,r5,0
86 mtctr r5
87 subi r4,r4,1
88 blelr-
8900: lbzu r5,1(r4)
90 stb r5,0(r3)
91 EIEIO_32
92 bdnz 00b
93 SYNC_64
94 blr
95
96_GLOBAL(_insw)
97 cmpwi 0,r5,0
98 mtctr r5
99 subi r4,r4,2
100 blelr-
10100: lhbrx r5,0,r3
102 eieio
103 sthu r5,2(r4)
104 bdnz 00b
105 IN_SYNC
106 blr
107
108_GLOBAL(_outsw)
109 cmpwi 0,r5,0
110 mtctr r5
111 subi r4,r4,2
112 blelr-
11300: lhzu r5,2(r4)
114 EIEIO_32
115 sthbrx r5,0,r3
116 bdnz 00b
117 SYNC_64
118 blr
119
120_GLOBAL(_insl)
121 cmpwi 0,r5,0
122 mtctr r5
123 subi r4,r4,4
124 blelr-
12500: lwbrx r5,0,r3
126 eieio
127 stwu r5,4(r4)
128 bdnz 00b
129 IN_SYNC
130 blr
131
132_GLOBAL(_outsl)
133 cmpwi 0,r5,0
134 mtctr r5
135 subi r4,r4,4
136 blelr-
13700: lwzu r5,4(r4)
138 stwbrx r5,0,r3
139 EIEIO_32
140 bdnz 00b
141 SYNC_64
142 blr
143
144#ifdef CONFIG_PPC32
145_GLOBAL(__ide_mm_insw)
146#endif
147_GLOBAL(_insw_ns)
148 cmpwi 0,r5,0
149 mtctr r5
150 subi r4,r4,2
151 blelr-
15200: lhz r5,0(r3)
153 eieio
154 sthu r5,2(r4)
155 bdnz 00b
156 IN_SYNC
157 blr
158
159#ifdef CONFIG_PPC32
160_GLOBAL(__ide_mm_outsw)
161#endif
162_GLOBAL(_outsw_ns)
163 cmpwi 0,r5,0
164 mtctr r5
165 subi r4,r4,2
166 blelr-
16700: lhzu r5,2(r4)
168 sth r5,0(r3)
169 EIEIO_32
170 bdnz 00b
171 SYNC_64
172 blr
173
174#ifdef CONFIG_PPC32
175_GLOBAL(__ide_mm_insl)
176#endif
177_GLOBAL(_insl_ns)
178 cmpwi 0,r5,0
179 mtctr r5
180 subi r4,r4,4
181 blelr-
18200: lwz r5,0(r3)
183 eieio
184 stwu r5,4(r4)
185 bdnz 00b
186 IN_SYNC
187 blr
188
189#ifdef CONFIG_PPC32
190_GLOBAL(__ide_mm_outsl)
191#endif
192_GLOBAL(_outsl_ns)
193 cmpwi 0,r5,0
194 mtctr r5
195 subi r4,r4,4
196 blelr-
19700: lwzu r5,4(r4)
198 stw r5,0(r3)
199 EIEIO_32
200 bdnz 00b
201 SYNC_64
202 blr
203
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 01d3916c4cb1..c74774e2175d 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -61,32 +61,6 @@ _GLOBAL(mulhdu)
61 blr 61 blr
62 62
63/* 63/*
64 * Returns (address we're running at) - (address we were linked at)
65 * for use before the text and data are mapped to KERNELBASE.
66 */
67_GLOBAL(reloc_offset)
68 mflr r0
69 bl 1f
701: mflr r3
71 LOAD_REG_IMMEDIATE(r4,1b)
72 subf r3,r4,r3
73 mtlr r0
74 blr
75
76/*
77 * add_reloc_offset(x) returns x + reloc_offset().
78 */
79_GLOBAL(add_reloc_offset)
80 mflr r0
81 bl 1f
821: mflr r5
83 LOAD_REG_IMMEDIATE(r4,1b)
84 subf r5,r4,r5
85 add r3,r3,r5
86 mtlr r0
87 blr
88
89/*
90 * sub_reloc_offset(x) returns x - reloc_offset(). 64 * sub_reloc_offset(x) returns x - reloc_offset().
91 */ 65 */
92_GLOBAL(sub_reloc_offset) 66_GLOBAL(sub_reloc_offset)
@@ -781,136 +755,6 @@ _GLOBAL(atomic_set_mask)
781 blr 755 blr
782 756
783/* 757/*
784 * I/O string operations
785 *
786 * insb(port, buf, len)
787 * outsb(port, buf, len)
788 * insw(port, buf, len)
789 * outsw(port, buf, len)
790 * insl(port, buf, len)
791 * outsl(port, buf, len)
792 * insw_ns(port, buf, len)
793 * outsw_ns(port, buf, len)
794 * insl_ns(port, buf, len)
795 * outsl_ns(port, buf, len)
796 *
797 * The *_ns versions don't do byte-swapping.
798 */
799_GLOBAL(_insb)
800 cmpwi 0,r5,0
801 mtctr r5
802 subi r4,r4,1
803 blelr-
80400: lbz r5,0(r3)
805 eieio
806 stbu r5,1(r4)
807 bdnz 00b
808 blr
809
810_GLOBAL(_outsb)
811 cmpwi 0,r5,0
812 mtctr r5
813 subi r4,r4,1
814 blelr-
81500: lbzu r5,1(r4)
816 stb r5,0(r3)
817 eieio
818 bdnz 00b
819 blr
820
821_GLOBAL(_insw)
822 cmpwi 0,r5,0
823 mtctr r5
824 subi r4,r4,2
825 blelr-
82600: lhbrx r5,0,r3
827 eieio
828 sthu r5,2(r4)
829 bdnz 00b
830 blr
831
832_GLOBAL(_outsw)
833 cmpwi 0,r5,0
834 mtctr r5
835 subi r4,r4,2
836 blelr-
83700: lhzu r5,2(r4)
838 eieio
839 sthbrx r5,0,r3
840 bdnz 00b
841 blr
842
843_GLOBAL(_insl)
844 cmpwi 0,r5,0
845 mtctr r5
846 subi r4,r4,4
847 blelr-
84800: lwbrx r5,0,r3
849 eieio
850 stwu r5,4(r4)
851 bdnz 00b
852 blr
853
854_GLOBAL(_outsl)
855 cmpwi 0,r5,0
856 mtctr r5
857 subi r4,r4,4
858 blelr-
85900: lwzu r5,4(r4)
860 stwbrx r5,0,r3
861 eieio
862 bdnz 00b
863 blr
864
865_GLOBAL(__ide_mm_insw)
866_GLOBAL(_insw_ns)
867 cmpwi 0,r5,0
868 mtctr r5
869 subi r4,r4,2
870 blelr-
87100: lhz r5,0(r3)
872 eieio
873 sthu r5,2(r4)
874 bdnz 00b
875 blr
876
877_GLOBAL(__ide_mm_outsw)
878_GLOBAL(_outsw_ns)
879 cmpwi 0,r5,0
880 mtctr r5
881 subi r4,r4,2
882 blelr-
88300: lhzu r5,2(r4)
884 sth r5,0(r3)
885 eieio
886 bdnz 00b
887 blr
888
889_GLOBAL(__ide_mm_insl)
890_GLOBAL(_insl_ns)
891 cmpwi 0,r5,0
892 mtctr r5
893 subi r4,r4,4
894 blelr-
89500: lwz r5,0(r3)
896 eieio
897 stwu r5,4(r4)
898 bdnz 00b
899 blr
900
901_GLOBAL(__ide_mm_outsl)
902_GLOBAL(_outsl_ns)
903 cmpwi 0,r5,0
904 mtctr r5
905 subi r4,r4,4
906 blelr-
90700: lwzu r5,4(r4)
908 stw r5,0(r3)
909 eieio
910 bdnz 00b
911 blr
912
913/*
914 * Extended precision shifts. 758 * Extended precision shifts.
915 * 759 *
916 * Updated to be valid for shift counts from 0 to 63 inclusive. 760 * Updated to be valid for shift counts from 0 to 63 inclusive.
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index e8883d42c43c..580891cb8ccb 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -1,14 +1,12 @@
1/* 1/*
2 * arch/powerpc/kernel/misc64.S
3 *
4 * This file contains miscellaneous low-level functions. 2 * This file contains miscellaneous low-level functions.
5 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) 3 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
6 * 4 *
7 * Largely rewritten by Cort Dougan (cort@cs.nmt.edu) 5 * Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
8 * and Paul Mackerras. 6 * and Paul Mackerras.
9 * Adapted for iSeries by Mike Corrigan (mikejc@us.ibm.com) 7 * Adapted for iSeries by Mike Corrigan (mikejc@us.ibm.com)
10 * PPC64 updates by Dave Engebretsen (engebret@us.ibm.com) 8 * PPC64 updates by Dave Engebretsen (engebret@us.ibm.com)
11 * 9 *
12 * This program is free software; you can redistribute it and/or 10 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License 11 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 12 * as published by the Free Software Foundation; either version
@@ -30,41 +28,10 @@
30 28
31 .text 29 .text
32 30
33/*
34 * Returns (address we are running at) - (address we were linked at)
35 * for use before the text and data are mapped to KERNELBASE.
36 */
37
38_GLOBAL(reloc_offset)
39 mflr r0
40 bl 1f
411: mflr r3
42 LOAD_REG_IMMEDIATE(r4,1b)
43 subf r3,r4,r3
44 mtlr r0
45 blr
46
47/*
48 * add_reloc_offset(x) returns x + reloc_offset().
49 */
50_GLOBAL(add_reloc_offset)
51 mflr r0
52 bl 1f
531: mflr r5
54 LOAD_REG_IMMEDIATE(r4,1b)
55 subf r5,r4,r5
56 add r3,r3,r5
57 mtlr r0
58 blr
59
60_GLOBAL(get_msr) 31_GLOBAL(get_msr)
61 mfmsr r3 32 mfmsr r3
62 blr 33 blr
63 34
64_GLOBAL(get_dar)
65 mfdar r3
66 blr
67
68_GLOBAL(get_srr0) 35_GLOBAL(get_srr0)
69 mfsrr0 r3 36 mfsrr0 r3
70 blr 37 blr
@@ -72,10 +39,6 @@ _GLOBAL(get_srr0)
72_GLOBAL(get_srr1) 39_GLOBAL(get_srr1)
73 mfsrr1 r3 40 mfsrr1 r3
74 blr 41 blr
75
76_GLOBAL(get_sp)
77 mr r3,r1
78 blr
79 42
80#ifdef CONFIG_IRQSTACKS 43#ifdef CONFIG_IRQSTACKS
81_GLOBAL(call_do_softirq) 44_GLOBAL(call_do_softirq)
@@ -101,48 +64,6 @@ _GLOBAL(call___do_IRQ)
101 blr 64 blr
102#endif /* CONFIG_IRQSTACKS */ 65#endif /* CONFIG_IRQSTACKS */
103 66
104 /*
105 * To be called by C code which needs to do some operations with MMU
106 * disabled. Note that interrupts have to be disabled by the caller
107 * prior to calling us. The code called _MUST_ be in the RMO of course
108 * and part of the linear mapping as we don't attempt to translate the
109 * stack pointer at all. The function is called with the stack switched
110 * to this CPU emergency stack
111 *
112 * prototype is void *call_with_mmu_off(void *func, void *data);
113 *
114 * the called function is expected to be of the form
115 *
116 * void *called(void *data);
117 */
118_GLOBAL(call_with_mmu_off)
119 mflr r0 /* get link, save it on stackframe */
120 std r0,16(r1)
121 mr r1,r5 /* save old stack ptr */
122 ld r1,PACAEMERGSP(r13) /* get emerg. stack */
123 subi r1,r1,STACK_FRAME_OVERHEAD
124 std r0,16(r1) /* save link on emerg. stack */
125 std r5,0(r1) /* save old stack ptr in backchain */
126 ld r3,0(r3) /* get to real function ptr (assume same TOC) */
127 bl 2f /* we need LR to return, continue at label 2 */
128
129 ld r0,16(r1) /* we return here from the call, get LR and */
130 ld r1,0(r1) /* .. old stack ptr */
131 mtspr SPRN_SRR0,r0 /* and get back to virtual mode with these */
132 mfmsr r4
133 ori r4,r4,MSR_IR|MSR_DR
134 mtspr SPRN_SRR1,r4
135 rfid
136
1372: mtspr SPRN_SRR0,r3 /* coming from above, enter real mode */
138 mr r3,r4 /* get parameter */
139 mfmsr r0
140 ori r0,r0,MSR_IR|MSR_DR
141 xori r0,r0,MSR_IR|MSR_DR
142 mtspr SPRN_SRR1,r0
143 rfid
144
145
146 .section ".toc","aw" 67 .section ".toc","aw"
147PPC64_CACHES: 68PPC64_CACHES:
148 .tc ppc64_caches[TC],ppc64_caches 69 .tc ppc64_caches[TC],ppc64_caches
@@ -323,144 +244,6 @@ _GLOBAL(__flush_dcache_icache)
323 bdnz 1b 244 bdnz 1b
324 isync 245 isync
325 blr 246 blr
326
327/*
328 * I/O string operations
329 *
330 * insb(port, buf, len)
331 * outsb(port, buf, len)
332 * insw(port, buf, len)
333 * outsw(port, buf, len)
334 * insl(port, buf, len)
335 * outsl(port, buf, len)
336 * insw_ns(port, buf, len)
337 * outsw_ns(port, buf, len)
338 * insl_ns(port, buf, len)
339 * outsl_ns(port, buf, len)
340 *
341 * The *_ns versions don't do byte-swapping.
342 */
343_GLOBAL(_insb)
344 cmpwi 0,r5,0
345 mtctr r5
346 subi r4,r4,1
347 blelr-
34800: lbz r5,0(r3)
349 eieio
350 stbu r5,1(r4)
351 bdnz 00b
352 twi 0,r5,0
353 isync
354 blr
355
356_GLOBAL(_outsb)
357 cmpwi 0,r5,0
358 mtctr r5
359 subi r4,r4,1
360 blelr-
36100: lbzu r5,1(r4)
362 stb r5,0(r3)
363 bdnz 00b
364 sync
365 blr
366
367_GLOBAL(_insw)
368 cmpwi 0,r5,0
369 mtctr r5
370 subi r4,r4,2
371 blelr-
37200: lhbrx r5,0,r3
373 eieio
374 sthu r5,2(r4)
375 bdnz 00b
376 twi 0,r5,0
377 isync
378 blr
379
380_GLOBAL(_outsw)
381 cmpwi 0,r5,0
382 mtctr r5
383 subi r4,r4,2
384 blelr-
38500: lhzu r5,2(r4)
386 sthbrx r5,0,r3
387 bdnz 00b
388 sync
389 blr
390
391_GLOBAL(_insl)
392 cmpwi 0,r5,0
393 mtctr r5
394 subi r4,r4,4
395 blelr-
39600: lwbrx r5,0,r3
397 eieio
398 stwu r5,4(r4)
399 bdnz 00b
400 twi 0,r5,0
401 isync
402 blr
403
404_GLOBAL(_outsl)
405 cmpwi 0,r5,0
406 mtctr r5
407 subi r4,r4,4
408 blelr-
40900: lwzu r5,4(r4)
410 stwbrx r5,0,r3
411 bdnz 00b
412 sync
413 blr
414
415/* _GLOBAL(ide_insw) now in drivers/ide/ide-iops.c */
416_GLOBAL(_insw_ns)
417 cmpwi 0,r5,0
418 mtctr r5
419 subi r4,r4,2
420 blelr-
42100: lhz r5,0(r3)
422 eieio
423 sthu r5,2(r4)
424 bdnz 00b
425 twi 0,r5,0
426 isync
427 blr
428
429/* _GLOBAL(ide_outsw) now in drivers/ide/ide-iops.c */
430_GLOBAL(_outsw_ns)
431 cmpwi 0,r5,0
432 mtctr r5
433 subi r4,r4,2
434 blelr-
43500: lhzu r5,2(r4)
436 sth r5,0(r3)
437 bdnz 00b
438 sync
439 blr
440
441_GLOBAL(_insl_ns)
442 cmpwi 0,r5,0
443 mtctr r5
444 subi r4,r4,4
445 blelr-
44600: lwz r5,0(r3)
447 eieio
448 stwu r5,4(r4)
449 bdnz 00b
450 twi 0,r5,0
451 isync
452 blr
453
454_GLOBAL(_outsl_ns)
455 cmpwi 0,r5,0
456 mtctr r5
457 subi r4,r4,4
458 blelr-
45900: lwzu r5,4(r4)
460 stw r5,0(r3)
461 bdnz 00b
462 sync
463 blr
464 247
465/* 248/*
466 * identify_cpu and calls setup_cpu 249 * identify_cpu and calls setup_cpu
@@ -605,6 +388,7 @@ _GLOBAL(real_writeb)
605 blr 388 blr
606#endif /* defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_MAPLE) */ 389#endif /* defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_MAPLE) */
607 390
391#ifdef CONFIG_CPU_FREQ_PMAC64
608/* 392/*
609 * SCOM access functions for 970 (FX only for now) 393 * SCOM access functions for 970 (FX only for now)
610 * 394 *
@@ -673,6 +457,7 @@ _GLOBAL(scom970_write)
673 /* restore interrupts */ 457 /* restore interrupts */
674 mtmsrd r5,1 458 mtmsrd r5,1
675 blr 459 blr
460#endif /* CONFIG_CPU_FREQ_PMAC64 */
676 461
677 462
678/* 463/*
diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c
index f505a8827e3e..a0bb354c1c08 100644
--- a/arch/powerpc/kernel/paca.c
+++ b/arch/powerpc/kernel/paca.c
@@ -16,7 +16,6 @@
16#include <asm/ptrace.h> 16#include <asm/ptrace.h>
17#include <asm/page.h> 17#include <asm/page.h>
18#include <asm/lppaca.h> 18#include <asm/lppaca.h>
19#include <asm/iseries/it_lp_queue.h>
20#include <asm/iseries/it_lp_reg_save.h> 19#include <asm/iseries/it_lp_reg_save.h>
21#include <asm/paca.h> 20#include <asm/paca.h>
22 21
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 483455c5bb02..320c913435cd 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -30,6 +30,7 @@
30#include <linux/bitops.h> 30#include <linux/bitops.h>
31#include <linux/module.h> 31#include <linux/module.h>
32#include <linux/kexec.h> 32#include <linux/kexec.h>
33#include <linux/debugfs.h>
33 34
34#include <asm/prom.h> 35#include <asm/prom.h>
35#include <asm/rtas.h> 36#include <asm/rtas.h>
@@ -952,6 +953,7 @@ static struct ibm_pa_feature {
952 /* put this back once we know how to test if firmware does 64k IO */ 953 /* put this back once we know how to test if firmware does 64k IO */
953 {CPU_FTR_CI_LARGE_PAGE, 0, 1, 2, 0}, 954 {CPU_FTR_CI_LARGE_PAGE, 0, 1, 2, 0},
954#endif 955#endif
956 {CPU_FTR_REAL_LE, PPC_FEATURE_TRUE_LE, 5, 0, 0},
955}; 957};
956 958
957static void __init check_cpu_pa_features(unsigned long node) 959static void __init check_cpu_pa_features(unsigned long node)
@@ -1124,24 +1126,6 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
1124 tce_alloc_end = *lprop; 1126 tce_alloc_end = *lprop;
1125#endif 1127#endif
1126 1128
1127#ifdef CONFIG_PPC_RTAS
1128 /* To help early debugging via the front panel, we retrieve a minimal
1129 * set of RTAS infos now if available
1130 */
1131 {
1132 u64 *basep, *entryp, *sizep;
1133
1134 basep = of_get_flat_dt_prop(node, "linux,rtas-base", NULL);
1135 entryp = of_get_flat_dt_prop(node, "linux,rtas-entry", NULL);
1136 sizep = of_get_flat_dt_prop(node, "linux,rtas-size", NULL);
1137 if (basep && entryp && sizep) {
1138 rtas.base = *basep;
1139 rtas.entry = *entryp;
1140 rtas.size = *sizep;
1141 }
1142 }
1143#endif /* CONFIG_PPC_RTAS */
1144
1145#ifdef CONFIG_KEXEC 1129#ifdef CONFIG_KEXEC
1146 lprop = (u64*)of_get_flat_dt_prop(node, "linux,crashkernel-base", NULL); 1130 lprop = (u64*)of_get_flat_dt_prop(node, "linux,crashkernel-base", NULL);
1147 if (lprop) 1131 if (lprop)
@@ -1326,6 +1310,11 @@ void __init early_init_devtree(void *params)
1326 /* Setup flat device-tree pointer */ 1310 /* Setup flat device-tree pointer */
1327 initial_boot_params = params; 1311 initial_boot_params = params;
1328 1312
1313#ifdef CONFIG_PPC_RTAS
1314 /* Some machines might need RTAS info for debugging, grab it now. */
1315 of_scan_flat_dt(early_init_dt_scan_rtas, NULL);
1316#endif
1317
1329 /* Retrieve various informations from the /chosen node of the 1318 /* Retrieve various informations from the /chosen node of the
1330 * device-tree, including the platform type, initrd location and 1319 * device-tree, including the platform type, initrd location and
1331 * size, TCE reserve, and more ... 1320 * size, TCE reserve, and more ...
@@ -2148,3 +2137,27 @@ struct device_node *of_get_cpu_node(int cpu, unsigned int *thread)
2148 } 2137 }
2149 return NULL; 2138 return NULL;
2150} 2139}
2140
2141#ifdef DEBUG
2142static struct debugfs_blob_wrapper flat_dt_blob;
2143
2144static int __init export_flat_device_tree(void)
2145{
2146 struct dentry *d;
2147
2148 d = debugfs_create_dir("powerpc", NULL);
2149 if (!d)
2150 return 1;
2151
2152 flat_dt_blob.data = initial_boot_params;
2153 flat_dt_blob.size = initial_boot_params->totalsize;
2154
2155 d = debugfs_create_blob("flat-device-tree", S_IFREG | S_IRUSR,
2156 d, &flat_dt_blob);
2157 if (!d)
2158 return 1;
2159
2160 return 0;
2161}
2162__initcall(export_flat_device_tree);
2163#endif
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 17dc79198515..4a4cb5598402 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -38,16 +38,19 @@
38struct rtas_t rtas = { 38struct rtas_t rtas = {
39 .lock = SPIN_LOCK_UNLOCKED 39 .lock = SPIN_LOCK_UNLOCKED
40}; 40};
41EXPORT_SYMBOL(rtas);
41 42
42struct rtas_suspend_me_data { 43struct rtas_suspend_me_data {
43 long waiting; 44 long waiting;
44 struct rtas_args *args; 45 struct rtas_args *args;
45}; 46};
46 47
47EXPORT_SYMBOL(rtas);
48
49DEFINE_SPINLOCK(rtas_data_buf_lock); 48DEFINE_SPINLOCK(rtas_data_buf_lock);
49EXPORT_SYMBOL(rtas_data_buf_lock);
50
50char rtas_data_buf[RTAS_DATA_BUF_SIZE] __cacheline_aligned; 51char rtas_data_buf[RTAS_DATA_BUF_SIZE] __cacheline_aligned;
52EXPORT_SYMBOL(rtas_data_buf);
53
51unsigned long rtas_rmo_buf; 54unsigned long rtas_rmo_buf;
52 55
53/* 56/*
@@ -106,11 +109,71 @@ static void call_rtas_display_status_delay(char c)
106 } 109 }
107} 110}
108 111
109void __init udbg_init_rtas(void) 112void __init udbg_init_rtas_panel(void)
110{ 113{
111 udbg_putc = call_rtas_display_status_delay; 114 udbg_putc = call_rtas_display_status_delay;
112} 115}
113 116
117#ifdef CONFIG_UDBG_RTAS_CONSOLE
118
119/* If you think you're dying before early_init_dt_scan_rtas() does its
120 * work, you can hard code the token values for your firmware here and
121 * hardcode rtas.base/entry etc.
122 */
123static unsigned int rtas_putchar_token = RTAS_UNKNOWN_SERVICE;
124static unsigned int rtas_getchar_token = RTAS_UNKNOWN_SERVICE;
125
126static void udbg_rtascon_putc(char c)
127{
128 int tries;
129
130 if (!rtas.base)
131 return;
132
133 /* Add CRs before LFs */
134 if (c == '\n')
135 udbg_rtascon_putc('\r');
136
137 /* if there is more than one character to be displayed, wait a bit */
138 for (tries = 0; tries < 16; tries++) {
139 if (rtas_call(rtas_putchar_token, 1, 1, NULL, c) == 0)
140 break;
141 udelay(1000);
142 }
143}
144
145static int udbg_rtascon_getc_poll(void)
146{
147 int c;
148
149 if (!rtas.base)
150 return -1;
151
152 if (rtas_call(rtas_getchar_token, 0, 2, &c))
153 return -1;
154
155 return c;
156}
157
158static int udbg_rtascon_getc(void)
159{
160 int c;
161
162 while ((c = udbg_rtascon_getc_poll()) == -1)
163 ;
164
165 return c;
166}
167
168
169void __init udbg_init_rtas_console(void)
170{
171 udbg_putc = udbg_rtascon_putc;
172 udbg_getc = udbg_rtascon_getc;
173 udbg_getc_poll = udbg_rtascon_getc_poll;
174}
175#endif /* CONFIG_UDBG_RTAS_CONSOLE */
176
114void rtas_progress(char *s, unsigned short hex) 177void rtas_progress(char *s, unsigned short hex)
115{ 178{
116 struct device_node *root; 179 struct device_node *root;
@@ -236,6 +299,7 @@ int rtas_token(const char *service)
236 tokp = (int *) get_property(rtas.dev, service, NULL); 299 tokp = (int *) get_property(rtas.dev, service, NULL);
237 return tokp ? *tokp : RTAS_UNKNOWN_SERVICE; 300 return tokp ? *tokp : RTAS_UNKNOWN_SERVICE;
238} 301}
302EXPORT_SYMBOL(rtas_token);
239 303
240#ifdef CONFIG_RTAS_ERROR_LOGGING 304#ifdef CONFIG_RTAS_ERROR_LOGGING
241/* 305/*
@@ -328,7 +392,7 @@ int rtas_call(int token, int nargs, int nret, int *outputs, ...)
328 char *buff_copy = NULL; 392 char *buff_copy = NULL;
329 int ret; 393 int ret;
330 394
331 if (token == RTAS_UNKNOWN_SERVICE) 395 if (!rtas.entry || token == RTAS_UNKNOWN_SERVICE)
332 return -1; 396 return -1;
333 397
334 /* Gotta do something different here, use global lock for now... */ 398 /* Gotta do something different here, use global lock for now... */
@@ -369,6 +433,7 @@ int rtas_call(int token, int nargs, int nret, int *outputs, ...)
369 } 433 }
370 return ret; 434 return ret;
371} 435}
436EXPORT_SYMBOL(rtas_call);
372 437
373/* For RTAS_BUSY (-2), delay for 1 millisecond. For an extended busy status 438/* For RTAS_BUSY (-2), delay for 1 millisecond. For an extended busy status
374 * code of 990n, perform the hinted delay of 10^n (last digit) milliseconds. 439 * code of 990n, perform the hinted delay of 10^n (last digit) milliseconds.
@@ -388,6 +453,7 @@ unsigned int rtas_busy_delay_time(int status)
388 453
389 return ms; 454 return ms;
390} 455}
456EXPORT_SYMBOL(rtas_busy_delay_time);
391 457
392/* For an RTAS busy status code, perform the hinted delay. */ 458/* For an RTAS busy status code, perform the hinted delay. */
393unsigned int rtas_busy_delay(int status) 459unsigned int rtas_busy_delay(int status)
@@ -401,6 +467,7 @@ unsigned int rtas_busy_delay(int status)
401 467
402 return ms; 468 return ms;
403} 469}
470EXPORT_SYMBOL(rtas_busy_delay);
404 471
405int rtas_error_rc(int rtas_rc) 472int rtas_error_rc(int rtas_rc)
406{ 473{
@@ -446,6 +513,7 @@ int rtas_get_power_level(int powerdomain, int *level)
446 return rtas_error_rc(rc); 513 return rtas_error_rc(rc);
447 return rc; 514 return rc;
448} 515}
516EXPORT_SYMBOL(rtas_get_power_level);
449 517
450int rtas_set_power_level(int powerdomain, int level, int *setlevel) 518int rtas_set_power_level(int powerdomain, int level, int *setlevel)
451{ 519{
@@ -463,6 +531,7 @@ int rtas_set_power_level(int powerdomain, int level, int *setlevel)
463 return rtas_error_rc(rc); 531 return rtas_error_rc(rc);
464 return rc; 532 return rc;
465} 533}
534EXPORT_SYMBOL(rtas_set_power_level);
466 535
467int rtas_get_sensor(int sensor, int index, int *state) 536int rtas_get_sensor(int sensor, int index, int *state)
468{ 537{
@@ -480,6 +549,7 @@ int rtas_get_sensor(int sensor, int index, int *state)
480 return rtas_error_rc(rc); 549 return rtas_error_rc(rc);
481 return rc; 550 return rc;
482} 551}
552EXPORT_SYMBOL(rtas_get_sensor);
483 553
484int rtas_set_indicator(int indicator, int index, int new_value) 554int rtas_set_indicator(int indicator, int index, int new_value)
485{ 555{
@@ -497,6 +567,7 @@ int rtas_set_indicator(int indicator, int index, int new_value)
497 return rtas_error_rc(rc); 567 return rtas_error_rc(rc);
498 return rc; 568 return rc;
499} 569}
570EXPORT_SYMBOL(rtas_set_indicator);
500 571
501void rtas_restart(char *cmd) 572void rtas_restart(char *cmd)
502{ 573{
@@ -791,14 +862,34 @@ void __init rtas_initialize(void)
791#endif 862#endif
792} 863}
793 864
865int __init early_init_dt_scan_rtas(unsigned long node,
866 const char *uname, int depth, void *data)
867{
868 u32 *basep, *entryp, *sizep;
794 869
795EXPORT_SYMBOL(rtas_token); 870 if (depth != 1 || strcmp(uname, "rtas") != 0)
796EXPORT_SYMBOL(rtas_call); 871 return 0;
797EXPORT_SYMBOL(rtas_data_buf); 872
798EXPORT_SYMBOL(rtas_data_buf_lock); 873 basep = of_get_flat_dt_prop(node, "linux,rtas-base", NULL);
799EXPORT_SYMBOL(rtas_busy_delay_time); 874 entryp = of_get_flat_dt_prop(node, "linux,rtas-entry", NULL);
800EXPORT_SYMBOL(rtas_busy_delay); 875 sizep = of_get_flat_dt_prop(node, "rtas-size", NULL);
801EXPORT_SYMBOL(rtas_get_sensor); 876
802EXPORT_SYMBOL(rtas_get_power_level); 877 if (basep && entryp && sizep) {
803EXPORT_SYMBOL(rtas_set_power_level); 878 rtas.base = *basep;
804EXPORT_SYMBOL(rtas_set_indicator); 879 rtas.entry = *entryp;
880 rtas.size = *sizep;
881 }
882
883#ifdef CONFIG_UDBG_RTAS_CONSOLE
884 basep = of_get_flat_dt_prop(node, "put-term-char", NULL);
885 if (basep)
886 rtas_putchar_token = *basep;
887
888 basep = of_get_flat_dt_prop(node, "get-term-char", NULL);
889 if (basep)
890 rtas_getchar_token = *basep;
891#endif
892
893 /* break now */
894 return 1;
895}
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 78f3a5fd43f6..175539c9afa0 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -149,6 +149,13 @@ early_param("smt-enabled", early_smt_enabled);
149#define check_smt_enabled() 149#define check_smt_enabled()
150#endif /* CONFIG_SMP */ 150#endif /* CONFIG_SMP */
151 151
152/* Put the paca pointer into r13 and SPRG3 */
153void __init setup_paca(int cpu)
154{
155 local_paca = &paca[cpu];
156 mtspr(SPRN_SPRG3, local_paca);
157}
158
152/* 159/*
153 * Early initialization entry point. This is called by head.S 160 * Early initialization entry point. This is called by head.S
154 * with MMU translation disabled. We rely on the "feature" of 161 * with MMU translation disabled. We rely on the "feature" of
@@ -170,6 +177,9 @@ early_param("smt-enabled", early_smt_enabled);
170 177
171void __init early_setup(unsigned long dt_ptr) 178void __init early_setup(unsigned long dt_ptr)
172{ 179{
180 /* Assume we're on cpu 0 for now. Don't write to the paca yet! */
181 setup_paca(0);
182
173 /* Enable early debugging if any specified (see udbg.h) */ 183 /* Enable early debugging if any specified (see udbg.h) */
174 udbg_early_init(); 184 udbg_early_init();
175 185
@@ -183,7 +193,7 @@ void __init early_setup(unsigned long dt_ptr)
183 early_init_devtree(__va(dt_ptr)); 193 early_init_devtree(__va(dt_ptr));
184 194
185 /* Now we know the logical id of our boot cpu, setup the paca. */ 195 /* Now we know the logical id of our boot cpu, setup the paca. */
186 setup_boot_paca(); 196 setup_paca(boot_cpuid);
187 197
188 /* Fix up paca fields required for the boot cpu */ 198 /* Fix up paca fields required for the boot cpu */
189 get_paca()->cpu_start = 1; 199 get_paca()->cpu_start = 1;
@@ -350,19 +360,11 @@ void __init setup_system(void)
350 */ 360 */
351 unflatten_device_tree(); 361 unflatten_device_tree();
352 362
353#ifdef CONFIG_KEXEC
354 kexec_setup(); /* requires unflattened device tree. */
355#endif
356
357 /* 363 /*
358 * Fill the ppc64_caches & systemcfg structures with informations 364 * Fill the ppc64_caches & systemcfg structures with informations
359 * retrieved from the device-tree. Need to be called before 365 * retrieved from the device-tree. Need to be called before
360 * finish_device_tree() since the later requires some of the 366 * finish_device_tree() since the later requires some of the
361 * informations filled up here to properly parse the interrupt 367 * informations filled up here to properly parse the interrupt tree.
362 * tree.
363 * It also sets up the cache line sizes which allows to call
364 * routines like flush_icache_range (used by the hash init
365 * later on).
366 */ 368 */
367 initialize_cache_info(); 369 initialize_cache_info();
368 370
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 52f5659534f4..fa6bd97b6b9d 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -52,9 +52,13 @@
52#include <asm/firmware.h> 52#include <asm/firmware.h>
53#include <asm/processor.h> 53#include <asm/processor.h>
54#endif 54#endif
55#include <asm/kexec.h>
55 56
56#ifdef CONFIG_PPC64 /* XXX */ 57#ifdef CONFIG_PPC64 /* XXX */
57#define _IO_BASE pci_io_base 58#define _IO_BASE pci_io_base
59#ifdef CONFIG_KEXEC
60cpumask_t cpus_in_sr = CPU_MASK_NONE;
61#endif
58#endif 62#endif
59 63
60#ifdef CONFIG_DEBUGGER 64#ifdef CONFIG_DEBUGGER
@@ -97,7 +101,7 @@ static DEFINE_SPINLOCK(die_lock);
97 101
98int die(const char *str, struct pt_regs *regs, long err) 102int die(const char *str, struct pt_regs *regs, long err)
99{ 103{
100 static int die_counter, crash_dump_start = 0; 104 static int die_counter;
101 105
102 if (debugger(regs)) 106 if (debugger(regs))
103 return 1; 107 return 1;
@@ -137,21 +141,12 @@ int die(const char *str, struct pt_regs *regs, long err)
137 print_modules(); 141 print_modules();
138 show_regs(regs); 142 show_regs(regs);
139 bust_spinlocks(0); 143 bust_spinlocks(0);
144 spin_unlock_irq(&die_lock);
140 145
141 if (!crash_dump_start && kexec_should_crash(current)) { 146 if (kexec_should_crash(current) ||
142 crash_dump_start = 1; 147 kexec_sr_activated(smp_processor_id()))
143 spin_unlock_irq(&die_lock);
144 crash_kexec(regs); 148 crash_kexec(regs);
145 /* NOTREACHED */ 149 crash_kexec_secondary(regs);
146 }
147 spin_unlock_irq(&die_lock);
148 if (crash_dump_start)
149 /*
150 * Only for soft-reset: Other CPUs will be responded to an IPI
151 * sent by first kexec CPU.
152 */
153 for(;;)
154 ;
155 150
156 if (in_interrupt()) 151 if (in_interrupt())
157 panic("Fatal exception in interrupt"); 152 panic("Fatal exception in interrupt");
@@ -215,6 +210,10 @@ void system_reset_exception(struct pt_regs *regs)
215 return; 210 return;
216 } 211 }
217 212
213#ifdef CONFIG_KEXEC
214 cpu_set(smp_processor_id(), cpus_in_sr);
215#endif
216
218 die("System Reset", regs, SIGABRT); 217 die("System Reset", regs, SIGABRT);
219 218
220 /* Must die if the interrupt is not recoverable */ 219 /* Must die if the interrupt is not recoverable */
diff --git a/arch/powerpc/kernel/udbg.c b/arch/powerpc/kernel/udbg.c
index 67d9fd9ae2b5..759afd5e0d8a 100644
--- a/arch/powerpc/kernel/udbg.c
+++ b/arch/powerpc/kernel/udbg.c
@@ -34,9 +34,12 @@ void __init udbg_early_init(void)
34#elif defined(CONFIG_PPC_EARLY_DEBUG_G5) 34#elif defined(CONFIG_PPC_EARLY_DEBUG_G5)
35 /* For use on Apple G5 machines */ 35 /* For use on Apple G5 machines */
36 udbg_init_pmac_realmode(); 36 udbg_init_pmac_realmode();
37#elif defined(CONFIG_PPC_EARLY_DEBUG_RTAS) 37#elif defined(CONFIG_PPC_EARLY_DEBUG_RTAS_PANEL)
38 /* RTAS panel debug */ 38 /* RTAS panel debug */
39 udbg_init_rtas(); 39 udbg_init_rtas_panel();
40#elif defined(CONFIG_PPC_EARLY_DEBUG_RTAS_CONSOLE)
41 /* RTAS console debug */
42 udbg_init_rtas_console();
40#elif defined(CONFIG_PPC_EARLY_DEBUG_MAPLE) 43#elif defined(CONFIG_PPC_EARLY_DEBUG_MAPLE)
41 /* Maple real mode debug */ 44 /* Maple real mode debug */
42 udbg_init_maple_realmode(); 45 udbg_init_maple_realmode();
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-27 15:35:35 -0500