aboutsummaryrefslogtreecommitdiffstats
path: root/arch/h8300/platform/h8s
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/h8300/platform/h8s
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/h8300/platform/h8s')
-rw-r--r--arch/h8300/platform/h8s/Makefile7
-rw-r--r--arch/h8300/platform/h8s/edosk2674/Makefile6
-rw-r--r--arch/h8300/platform/h8s/edosk2674/crt0_ram.S131
-rw-r--r--arch/h8300/platform/h8s/edosk2674/crt0_rom.S187
-rw-r--r--arch/h8300/platform/h8s/edosk2674/timer.c55
-rw-r--r--arch/h8300/platform/h8s/entry.S331
-rw-r--r--arch/h8300/platform/h8s/generic/Makefile6
-rw-r--r--arch/h8300/platform/h8s/generic/crt0_ram.S128
-rw-r--r--arch/h8300/platform/h8s/generic/crt0_rom.S129
-rw-r--r--arch/h8300/platform/h8s/generic/timer.c54
-rw-r--r--arch/h8300/platform/h8s/ints.c303
-rw-r--r--arch/h8300/platform/h8s/ints_h8s.c105
-rw-r--r--arch/h8300/platform/h8s/ptrace_h8s.c84
13 files changed, 1526 insertions, 0 deletions
diff --git a/arch/h8300/platform/h8s/Makefile b/arch/h8300/platform/h8s/Makefile
new file mode 100644
index 00000000000..0847b15d425
--- /dev/null
+++ b/arch/h8300/platform/h8s/Makefile
@@ -0,0 +1,7 @@
1#
2# Makefile for the linux kernel.
3#
4# Reuse any files we can from the H8S
5#
6
7obj-y := entry.o ints_h8s.o ptrace_h8s.o
diff --git a/arch/h8300/platform/h8s/edosk2674/Makefile b/arch/h8300/platform/h8s/edosk2674/Makefile
new file mode 100644
index 00000000000..f763654ac6f
--- /dev/null
+++ b/arch/h8300/platform/h8s/edosk2674/Makefile
@@ -0,0 +1,6 @@
1#
2# Makefile for the linux kernel.
3#
4
5extra-y := crt0_$(MODEL).o
6obj-y := timer.o
diff --git a/arch/h8300/platform/h8s/edosk2674/crt0_ram.S b/arch/h8300/platform/h8s/edosk2674/crt0_ram.S
new file mode 100644
index 00000000000..8105dc17d73
--- /dev/null
+++ b/arch/h8300/platform/h8s/edosk2674/crt0_ram.S
@@ -0,0 +1,131 @@
1/*
2 * linux/arch/h8300/platform/h8s/edosk2674/crt0_ram.S
3 *
4 * Yoshinori Sato <ysato@users.sourceforge.jp>
5 *
6 * Platform depend startup
7 * Target Archtecture: EDOSK-2674
8 * Memory Layout : RAM
9 */
10
11#define ASSEMBLY
12
13#include <linux/config.h>
14#include <asm/linkage.h>
15#include <asm/regs267x.h>
16
17#if !defined(CONFIG_BLKDEV_RESERVE)
18#if defined(CONFIG_GDB_DEBUG)
19#define RAMEND (__ramend - 0xc000)
20#else
21#define RAMEND __ramend
22#endif
23#else
24#define RAMEND CONFIG_BLKDEV_RESERVE_ADDRESS
25#endif
26
27 .global SYMBOL_NAME(_start)
28 .global SYMBOL_NAME(_command_line)
29 .global SYMBOL_NAME(_platform_gpio_table)
30 .global SYMBOL_NAME(_target_name)
31
32 .h8300s
33
34 .section .text
35 .file "crt0_ram.S"
36
37 /* CPU Reset entry */
38SYMBOL_NAME_LABEL(_start)
39 mov.l #RAMEND,sp
40 ldc #0x80,ccr
41 ldc #0x00,exr
42
43 /* Peripheral Setup */
44 bclr #4,@INTCR:8 /* interrupt mode 2 */
45 bset #5,@INTCR:8
46 bclr #0,@IER+1:16
47 bset #1,@ISCRL+1:16 /* IRQ0 Positive Edge */
48 bclr #0,@ISCRL+1:16
49
50#if defined(CONFIG_MTD_UCLINUX)
51 /* move romfs image */
52 jsr @__move_romfs
53#endif
54
55 /* .bss clear */
56 mov.l #__sbss,er5
57 mov.l er5,er6
58 mov.l #__ebss,er4
59 sub.l er5,er4
60 shlr #2,er4
61 sub.l er0,er0
621:
63 mov.l er0,@er5
64 adds #4,er5
65 dec.l #1,er4
66 bne 1b
67
68 /* copy kernel commandline */
69 mov.l #COMMAND_START,er5
70 mov.l #SYMBOL_NAME(command_line),er6
71 mov.w #512,r4
72 eepmov.w
73
74 /* uClinux kernel start */
75 ldc #0x90,ccr /* running kernel */
76 mov.l #SYMBOL_NAME(init_thread_union),sp
77 add.l #0x2000,sp
78 jsr @_start_kernel
79_exit:
80
81 jmp _exit
82
83 rts
84
85 /* I/O port assign information */
86__platform_gpio_table:
87 mov.l #gpio_table,er0
88 rts
89
90gpio_table:
91 ;; P1DDR
92 ;; used,ddr
93 .byte 0x00,0x00
94 ;; P2DDR
95 .byte 0x00,0x00
96 ;; P3DDR
97 .byte 0x3f,0x3a
98 ;; dummy
99 .byte 0x00,0x00
100 ;; P5DDR
101 .byte 0x00,0x00
102 ;; P6DDR
103 .byte 0x00,0x00
104 ;; P7DDR
105 .byte 0x00,0x00
106 ;; P8DDR
107 .byte 0x00,0x00
108 ;; dummy
109 .byte 0x00,0x00
110 ;; PADDR
111 .byte 0xff,0xff
112 ;; PBDDR
113 .byte 0xff,0x00
114 ;; PCDDR
115 .byte 0xff,0x00
116 ;; PDDDR
117 .byte 0xff,0x00
118 ;; PEDDR
119 .byte 0xff,0x00
120 ;; PFDDR
121 .byte 0xff,0xff
122 ;; PGDDR
123 .byte 0x0f,0x0f
124 ;; PHDDR
125 .byte 0x0f,0x0f
126
127__target_name:
128 .asciz "EDOSK-2674"
129
130 .section .bootvec,"ax"
131 jmp @SYMBOL_NAME(_start)
diff --git a/arch/h8300/platform/h8s/edosk2674/crt0_rom.S b/arch/h8300/platform/h8s/edosk2674/crt0_rom.S
new file mode 100644
index 00000000000..65748bf1855
--- /dev/null
+++ b/arch/h8300/platform/h8s/edosk2674/crt0_rom.S
@@ -0,0 +1,187 @@
1/*
2 * linux/arch/h8300/platform/h8s/edosk2674/crt0_rom.S
3 *
4 * Yoshinori Sato <ysato@users.sourceforge.jp>
5 *
6 * Platform depend startup
7 * Target Archtecture: EDOSK-2674
8 * Memory Layout : ROM
9 */
10
11#define ASSEMBLY
12
13#include <linux/config.h>
14#include <asm/linkage.h>
15#include <asm/regs267x.h>
16
17 .global SYMBOL_NAME(_start)
18 .global SYMBOL_NAME(_command_line)
19 .global SYMBOL_NAME(_platform_gpio_table)
20 .global SYMBOL_NAME(_target_name)
21
22 .h8300s
23 .section .text
24 .file "crt0_rom.S"
25
26 /* CPU Reset entry */
27SYMBOL_NAME_LABEL(_start)
28 mov.l #__ramend,sp
29 ldc #0x80,ccr
30 ldc #0,exr
31
32 /* Peripheral Setup */
33;BSC/GPIO setup
34 mov.l #init_regs,er0
35 mov.w #0xffff,e2
361:
37 mov.w @er0+,r2
38 beq 2f
39 mov.w @er0+,r1
40 mov.b r1l,@er2
41 bra 1b
42
432:
44;SDRAM setup
45#define SDRAM_SMR 0x400040
46
47 mov.b #0,r0l
48 mov.b r0l,@DRACCR:16
49 mov.w #0x188,r0
50 mov.w r0,@REFCR:16
51 mov.w #0x85b4,r0
52 mov.w r0,@DRAMCR:16
53 mov.b #0,r1l
54 mov.b r1l,@SDRAM_SMR
55 mov.w #0x84b4,r0
56 mov.w r0,@DRAMCR:16
57;special thanks to Arizona Cooperative Power
58
59 /* copy .data */
60 mov.l #__begin_data,er5
61 mov.l #__sdata,er6
62 mov.l #__edata,er4
63 sub.l er6,er4
64 shlr.l #2,er4
651:
66 mov.l @er5+,er0
67 mov.l er0,@er6
68 adds #4,er6
69 dec.l #1,er4
70 bne 1b
71
72 /* .bss clear */
73 mov.l #__sbss,er5
74 mov.l #__ebss,er4
75 sub.l er5,er4
76 shlr.l #2,er4
77 sub.l er0,er0
781:
79 mov.l er0,@er5
80 adds #4,er5
81 dec.l #1,er4
82 bne 1b
83
84 /* copy kernel commandline */
85 mov.l #COMMAND_START,er5
86 mov.l #SYMBOL_NAME(_command_line),er6
87 mov.w #512,r4
88 eepmov.w
89
90 /* linux kernel start */
91 ldc #0x90,ccr /* running kernel */
92 mov.l #SYMBOL_NAME(init_thread_union),sp
93 add.l #0x2000,sp
94 jsr @_start_kernel
95_exit:
96
97 jmp _exit
98
99 rts
100
101 /* I/O port assign information */
102__platform_gpio_table:
103 mov.l #gpio_table,er0
104 rts
105
106#define INIT_REGS_DATA(REGS,DATA) \
107 .word ((REGS) & 0xffff),DATA
108
109init_regs:
110INIT_REGS_DATA(ASTCR,0xff)
111INIT_REGS_DATA(RDNCR,0x00)
112INIT_REGS_DATA(ABWCR,0x80)
113INIT_REGS_DATA(WTCRAH,0x27)
114INIT_REGS_DATA(WTCRAL,0x77)
115INIT_REGS_DATA(WTCRBH,0x71)
116INIT_REGS_DATA(WTCRBL,0x22)
117INIT_REGS_DATA(CSACRH,0x80)
118INIT_REGS_DATA(CSACRL,0x80)
119INIT_REGS_DATA(BROMCRH,0xa0)
120INIT_REGS_DATA(BROMCRL,0xa0)
121INIT_REGS_DATA(P3DDR,0x3a)
122INIT_REGS_DATA(P3ODR,0x06)
123INIT_REGS_DATA(PADDR,0xff)
124INIT_REGS_DATA(PFDDR,0xfe)
125INIT_REGS_DATA(PGDDR,0x0f)
126INIT_REGS_DATA(PHDDR,0x0f)
127INIT_REGS_DATA(PFCR0,0xff)
128INIT_REGS_DATA(PFCR2,0x0d)
129INIT_REGS_DATA(ITSR, 0x00)
130INIT_REGS_DATA(ITSR+1,0x3f)
131INIT_REGS_DATA(INTCR,0x20)
132
133 .word 0
134
135gpio_table:
136 ;; P1DDR
137 .byte 0x00,0x00
138 ;; P2DDR
139 .byte 0x00,0x00
140 ;; P3DDR
141 .byte 0x00,0x00
142 ;; dummy
143 .byte 0x00,0x00
144 ;; P5DDR
145 .byte 0x00,0x00
146 ;; P6DDR
147 .byte 0x00,0x00
148 ;; P7DDR
149 .byte 0x00,0x00
150 ;; P8DDR
151 .byte 0x00,0x00
152 ;; dummy
153 .byte 0x00,0x00
154 ;; PADDR
155 .byte 0x00,0x00
156 ;; PBDDR
157 .byte 0x00,0x00
158 ;; PCDDR
159 .byte 0x00,0x00
160 ;; PDDDR
161 .byte 0x00,0x00
162 ;; PEDDR
163 .byte 0x00,0x00
164 ;; PFDDR
165 .byte 0x00,0x00
166 ;; PGDDR
167 .byte 0x00,0x00
168 ;; PHDDR
169 .byte 0x00,0x00
170
171 .section .rodata
172__target_name:
173 .asciz "EDOSK-2674"
174
175 .section .bss
176__command_line:
177 .space 512
178
179 /* interrupt vector */
180 .section .vectors,"ax"
181 .long __start
182 .long __start
183vector = 2
184 .rept 126
185 .long _interrupt_redirect_table+vector*4
186vector = vector + 1
187 .endr
diff --git a/arch/h8300/platform/h8s/edosk2674/timer.c b/arch/h8300/platform/h8s/edosk2674/timer.c
new file mode 100644
index 00000000000..9441a4f1631
--- /dev/null
+++ b/arch/h8300/platform/h8s/edosk2674/timer.c
@@ -0,0 +1,55 @@
1/*
2 * linux/arch/h8300/platform/h8s/edosk2674/timer.c
3 *
4 * Yoshinori Sato <ysato@users.sourceforge.jp>
5 *
6 * Platform depend Timer Handler
7 *
8 */
9
10#include <linux/config.h>
11#include <linux/errno.h>
12#include <linux/sched.h>
13#include <linux/kernel.h>
14#include <linux/param.h>
15#include <linux/string.h>
16#include <linux/mm.h>
17#include <linux/interrupt.h>
18#include <linux/init.h>
19#include <linux/timex.h>
20
21#include <asm/segment.h>
22#include <asm/io.h>
23#include <asm/irq.h>
24#include <asm/regs267x.h>
25
26#define CMFA 6
27
28#define CMIEA 0x40
29#define CCLR_CMA 0x08
30#define CLK_DIV8192 0x03
31
32#define H8300_TIMER_FREQ CONFIG_CPU_CLOCK*1000/8192 /* Timer input freq. */
33
34void __init platform_timer_setup(irqreturn_t (*timer_int)(int, void *, struct pt_regs *))
35{
36 /* 8bit timer module enabled */
37 ctrl_outb(ctrl_inb(MSTPCRL) & ~0x01, MSTPCRL);
38 /* setup 8bit timer ch1 */
39 ctrl_outb(H8300_TIMER_FREQ / HZ, _8TCORA1); /* set interval */
40 ctrl_outb(0x00, _8TCSR1); /* no output */
41 request_irq(76, timer_int, 0, "timer" ,0);
42 ctrl_outb(CMIEA|CCLR_CMA|CLK_DIV8192, _8TCR1); /* start count */
43}
44
45void platform_timer_eoi(void)
46{
47 *(volatile unsigned char *)_8TCSR1 &= ~(1 << CMFA);
48}
49
50void platform_gettod(int *year, int *mon, int *day, int *hour,
51 int *min, int *sec)
52{
53/* FIXME! not RTC support */
54 *year = *mon = *day = *hour = *min = *sec = 0;
55}
diff --git a/arch/h8300/platform/h8s/entry.S b/arch/h8300/platform/h8s/entry.S
new file mode 100644
index 00000000000..a7a53c84c80
--- /dev/null
+++ b/arch/h8300/platform/h8s/entry.S
@@ -0,0 +1,331 @@
1/* -*- mode: asm -*-
2 *
3 * linux/arch/h8300/platform/h8s/entry.S
4 *
5 * Yoshinori Sato <ysato@users.sourceforge.jp>
6 *
7 * fairly heavy changes to fix syscall args and signal processing
8 * by David McCullough <davidm@snapgear.com>
9 */
10
11/*
12 * entry.S
13 * include exception/interrupt gateway
14 * system call entry
15 */
16
17#include <linux/sys.h>
18#include <linux/config.h>
19#include <asm/unistd.h>
20#include <asm/setup.h>
21#include <asm/segment.h>
22#include <asm/linkage.h>
23#include <asm/asm-offsets.h>
24#include <asm/thread_info.h>
25#include <asm/errno.h>
26
27 .h8300s
28
29/* CPU context save/restore macros. */
30
31 .macro SAVE_ALL
32 mov.l er0,@-sp
33
34 stc ccr,r0l /* check kernel mode */
35 orc #0x10,ccr
36 btst #4,r0l
37 bne 5f
38
39 mov.l sp,@SYMBOL_NAME(sw_usp) /* user mode */
40 mov.l @sp,er0
41 mov.l @SYMBOL_NAME(sw_ksp),sp
42 sub.l #(LRET-LORIG),sp /* allocate LORIG - LRET */
43 stm.l er0-er3,@-sp
44 mov.l @SYMBOL_NAME(sw_usp),er0
45 mov.l @(10:16,er0),er1 /* copy the RET addr */
46 mov.l er1,@(LRET-LER3:16,sp)
47 mov.w @(8:16,er0),r1
48 mov.w r1,@(LEXR-LER3:16,sp) /* copy EXR */
49
50 mov.w e1,r1 /* e1 highbyte = ccr */
51 and #0xef,r1h /* mask mode? flag */
52 sub.w r0,r0
53 mov.b r1h,r0l
54 mov.w r0,@(LCCR-LER3:16,sp) /* copy ccr */
55 mov.l @(LORIG-LER3:16,sp),er0
56 mov.l er0,@(LER0-LER3:16,sp) /* copy ER0 */
57 bra 6f
585:
59 mov.l @sp,er0 /* kernel mode */
60 subs #2,sp /* dummy ccr */
61 stm.l er0-er3,@-sp
62 mov.w @(LRET-LER3:16,sp),r1 /* copy old ccr */
63 mov.b r1h,r1l
64 mov.b #0,r1h
65 mov.w r1,@(LCCR-LER3:16,sp)
666:
67 mov.l er6,@-sp /* syscall arg #6 */
68 mov.l er5,@-sp /* syscall arg #5 */
69 mov.l er4,@-sp /* syscall arg #4 */
70 .endm
71
72 .macro RESTORE_ALL
73 mov.l @sp+,er4
74 mov.l @sp+,er5
75 mov.l @sp+,er6
76 ldm.l @sp+,er2-er3
77 mov.w @(LCCR-LER1:16,sp),r0 /* check kernel mode */
78 btst #4,r0l
79 bne 7f
80
81 orc #0x80,ccr
82 mov.l @SYMBOL_NAME(sw_usp),er0
83 mov.l @(LER0-LER1:16,sp),er1 /* restore ER0 */
84 mov.l er1,@er0
85 mov.w @(LEXR-LER1:16,sp),r1 /* restore EXR */
86 mov.b r1l,r1h
87 mov.w r1,@(8:16,er0)
88 mov.w @(LCCR-LER1:16,sp),r1 /* restore the RET addr */
89 mov.b r1l,r1h
90 mov.b @(LRET+1-LER1:16,sp),r1l
91 mov.w r1,e1
92 mov.w @(LRET+2-LER1:16,sp),r1
93 mov.l er1,@(10:16,er0)
94
95 mov.l @sp+,er1
96 add.l #(LRET-LER1),sp /* remove LORIG - LRET */
97 mov.l sp,@SYMBOL_NAME(sw_ksp)
98 mov.l er0,sp
99 bra 8f
1007:
101 mov.l @sp+,er1
102 adds #4,sp
103 adds #2,sp
1048:
105 mov.l @sp+,er0
106 adds #4,sp /* remove the sw created LVEC */
107 rte
108 .endm
109
110.globl SYMBOL_NAME(system_call)
111.globl SYMBOL_NAME(ret_from_exception)
112.globl SYMBOL_NAME(ret_from_fork)
113.globl SYMBOL_NAME(ret_from_interrupt)
114.globl SYMBOL_NAME(interrupt_redirect_table)
115.globl SYMBOL_NAME(sw_ksp),SYMBOL_NAME(sw_usp)
116.globl SYMBOL_NAME(resume)
117.globl SYMBOL_NAME(trace_break)
118.globl SYMBOL_NAME(interrupt_entry)
119
120INTERRUPTS = 128
121#if defined(CONFIG_ROMKERNEL)
122 .section .int_redirect,"ax"
123SYMBOL_NAME_LABEL(interrupt_redirect_table)
124 .rept 7
125 .long 0
126 .endr
127 jsr @SYMBOL_NAME(interrupt_entry) /* NMI */
128 jmp @SYMBOL_NAME(system_call) /* TRAPA #0 (System call) */
129 .long 0
130 .long 0
131 jmp @SYMBOL_NAME(trace_break) /* TRAPA #3 (breakpoint) */
132 .rept INTERRUPTS-12
133 jsr @SYMBOL_NAME(interrupt_entry)
134 .endr
135#endif
136#if defined(CONFIG_RAMKERNEL)
137.globl SYMBOL_NAME(interrupt_redirect_table)
138 .section .bss
139SYMBOL_NAME_LABEL(interrupt_redirect_table)
140 .space 4
141#endif
142
143 .section .text
144 .align 2
145SYMBOL_NAME_LABEL(interrupt_entry)
146 SAVE_ALL
147 mov.w @(LCCR,sp),r0
148 btst #4,r0l
149 bne 1f
150 mov.l @SYMBOL_NAME(sw_usp),er0
151 mov.l @(4:16,er0),er0
152 bra 2f
1531:
154 mov.l @(LVEC:16,sp),er0
1552:
156#if defined(CONFIG_ROMKERNEL)
157 sub.l #SYMBOL_NAME(interrupt_redirect_table),er0
158#endif
159#if defined(CONFIG_RAMKERNEL)
160 mov.l @SYMBOL_NAME(interrupt_redirect_table),er1
161 sub.l er1,er0
162#endif
163 shlr.l #2,er0
164 dec.l #1,er0
165 mov.l sp,er1
166 subs #4,er1 /* adjust ret_pc */
167 jsr @SYMBOL_NAME(process_int)
168 mov.l @SYMBOL_NAME(irq_stat)+CPUSTAT_SOFTIRQ_PENDING,er0
169 beq 1f
170 jsr @SYMBOL_NAME(do_softirq)
1711:
172 jmp @SYMBOL_NAME(ret_from_exception)
173
174SYMBOL_NAME_LABEL(system_call)
175 subs #4,sp /* dummy LVEC */
176 SAVE_ALL
177 mov.w @(LCCR:16,sp),r1
178 bset #4,r1l
179 ldc r1l,ccr /* restore ccr */
180 mov.l er0,er4
181 mov.l #-ENOSYS,er0
182 mov.l er0,@(LER0:16,sp)
183
184 /* save top of frame */
185 mov.l sp,er0
186 jsr @SYMBOL_NAME(set_esp0)
187 cmp.l #NR_syscalls,er4
188 bcc SYMBOL_NAME(ret_from_exception):16
189 shll.l #2,er4
190 mov.l #SYMBOL_NAME(sys_call_table),er0
191 add.l er4,er0
192 mov.l @er0,er0
193 mov.l er0,er4
194 beq SYMBOL_NAME(ret_from_exception):16
195 mov.l sp,er2
196 and.w #0xe000,r2
197 mov.b @((TASK_FLAGS+3-(TIF_SYSCALL_TRACE >> 3)):16,er2),r2l
198 btst #(TIF_SYSCALL_TRACE & 7),r2l
199 mov.l @(LER1:16,sp),er0
200 mov.l @(LER2:16,sp),er1
201 mov.l @(LER3:16,sp),er2
202 jsr @er4
203 mov.l er0,@(LER0:16,sp) /* save the return value */
204#if defined(CONFIG_SYSCALL_PRINT)
205 jsr @SYMBOL_NAME(syscall_print)
206#endif
207 bra SYMBOL_NAME(ret_from_exception):8
2081:
209 jsr SYMBOL_NAME(syscall_trace)
210 mov.l @(LER1:16,sp),er0
211 mov.l @(LER2:16,sp),er1
212 mov.l @(LER3:16,sp),er2
213 jsr @er4
214 mov.l er0,@(LER0:16,sp) /* save the return value */
215 jsr @SYMBOL_NAME(syscall_trace)
216 bra SYMBOL_NAME(ret_from_exception):8
217
218SYMBOL_NAME_LABEL(ret_from_fork)
219 mov.l er2,er0
220 jsr @SYMBOL_NAME(schedule_tail)
221 bra SYMBOL_NAME(ret_from_exception):8
222
223SYMBOL_NAME_LABEL(reschedule)
224 /* save top of frame */
225 mov.l sp,er0
226 jsr @SYMBOL_NAME(set_esp0)
227 jsr @SYMBOL_NAME(schedule)
228
229SYMBOL_NAME_LABEL(ret_from_exception)
230#if defined(CONFIG_PREEMPT)
231 orc #0x80,ccr
232#endif
233SYMBOL_NAME_LABEL(ret_from_interrupt)
234 mov.b @(LCCR+1:16,sp),r0l
235 btst #4,r0l /* check if returning to kernel */
236 bne done:8 /* if so, skip resched, signals */
237 andc #0x7f,ccr
238 mov.l sp,er4
239 and.w #0xe000,r4
240 mov.l @(TI_FLAGS:16,er4),er1
241 and.l #_TIF_WORK_MASK,er1
242 beq done:8
2431:
244 mov.l @(TI_FLAGS:16,er4),er1
245 btst #TIF_NEED_RESCHED,r1l
246 bne SYMBOL_NAME(reschedule):16
247 mov.l sp,er0
248 subs #4,er0 /* adjust retpc */
249 mov.l er2,er1
250 jsr @SYMBOL_NAME(do_signal)
251#if defined(CONFIG_PREEMPT)
252 bra done:8 /* userspace thoru */
2533:
254 btst #4,r0l
255 beq done:8 /* userspace thoru */
2564:
257 mov.l @(TI_PRE_COUNT:16,er4),er1
258 bne done:8
259 mov.l @(TI_FLAGS:16,er4),er1
260 btst #TIF_NEED_RESCHED,r1l
261 beq done:8
262 mov.b r0l,r0l
263 bpl done:8 /* interrupt off (exception path?) */
264 mov.l #PREEMPT_ACTIVE,er1
265 mov.l er1,@(TI_PRE_COUNT:16,er4)
266 andc #0x7f,ccr
267 jsr @SYMBOL_NAME(schedule)
268 sub.l er1,er1
269 mov.l er1,@(TI_PRE_COUNT:16,er4)
270 orc #0x80,ccr
271 bra 4b:8
272#endif
273done:
274 RESTORE_ALL /* Does RTE */
275
276SYMBOL_NAME_LABEL(resume)
277 /*
278 * er0 = prev
279 * er1 = next
280 * return last in er2
281 */
282
283 /* save sr */
284 sub.w r3,r3
285 stc ccr,r3l
286 stc exr,r3h
287 mov.w r3,@(THREAD_CCR+2:16,er0)
288
289 /* disable interrupts */
290 orc #0x80,ccr
291 mov.l @SYMBOL_NAME(sw_usp),er3
292 mov.l er3,@(THREAD_USP:16,er0)
293 mov.l sp,@(THREAD_KSP:16,er0)
294
295 /* Skip address space switching if they are the same. */
296 /* FIXME: what did we hack out of here, this does nothing! */
297
298 mov.l @(THREAD_USP:16,er1),er0
299 mov.l er0,@SYMBOL_NAME(sw_usp)
300 mov.l @(THREAD_KSP:16,er1),sp
301
302 /* restore status register */
303 mov.w @(THREAD_CCR+2:16,er1),r3
304
305 ldc r3l,ccr
306 ldc r3h,exr
307
308 rts
309
310SYMBOL_NAME_LABEL(trace_break)
311 subs #4,sp /* dummy LVEC */
312 SAVE_ALL
313 sub.l er1,er1
314 dec.l #1,er1
315 mov.l er1,@(LORIG,sp)
316 mov.l sp,er0
317 jsr @SYMBOL_NAME(set_esp0)
318 mov.l @SYMBOL_NAME(sw_usp),er0
319 mov.l @er0,er1
320 subs #2,er1
321 mov.l er1,@er0
322 and.w #0xff,e1
323 mov.l er1,er0
324 jsr @SYMBOL_NAME(trace_trap)
325 jmp @SYMBOL_NAME(ret_from_exception)
326
327 .section .bss
328SYMBOL_NAME_LABEL(sw_ksp)
329 .space 4
330SYMBOL_NAME_LABEL(sw_usp)
331 .space 4
diff --git a/arch/h8300/platform/h8s/generic/Makefile b/arch/h8300/platform/h8s/generic/Makefile
new file mode 100644
index 00000000000..055d53a9811
--- /dev/null
+++ b/arch/h8300/platform/h8s/generic/Makefile
@@ -0,0 +1,6 @@
1#
2# Makefile for the linux kernel.
3#
4
5extra-y = crt0_$(MODEL).o
6obj-y := timer.o
diff --git a/arch/h8300/platform/h8s/generic/crt0_ram.S b/arch/h8300/platform/h8s/generic/crt0_ram.S
new file mode 100644
index 00000000000..86f45017846
--- /dev/null
+++ b/arch/h8300/platform/h8s/generic/crt0_ram.S
@@ -0,0 +1,128 @@
1/*
2 * linux/arch/h8300/platform/h8s/edosk2674/crt0_ram.S
3 *
4 * Yoshinori Sato <ysato@users.sourceforge.jp>
5 *
6 * Platform depend startup
7 * Target Archtecture: generic
8 * Memory Layout : RAM
9 */
10
11#define ASSEMBLY
12
13#include <linux/config.h>
14#include <asm/linkage.h>
15#include <asm/regs267x.h>
16
17#if !defined(CONFIG_BLKDEV_RESERVE)
18#if defined(CONFIG_GDB_DEBUG)
19#define RAMEND (__ramend - 0xc000)
20#else
21#define RAMEND __ramend
22#endif
23#else
24#define RAMEND CONFIG_BLKDEV_RESERVE_ADDRESS
25#endif
26
27 .global SYMBOL_NAME(_start)
28 .global SYMBOL_NAME(_command_line)
29 .global SYMBOL_NAME(_platform_gpio_table)
30 .global SYMBOL_NAME(_target_name)
31
32 .h8300s
33
34 .section .text
35 .file "crt0_ram.S"
36
37 /* CPU Reset entry */
38SYMBOL_NAME_LABEL(_start)
39 mov.l #RAMEND,sp
40 ldc #0x80,ccr
41 ldc #0x00,exr
42
43 /* Peripheral Setup */
44 bclr #4,@INTCR:8 /* interrupt mode 2 */
45 bset #5,@INTCR:8
46
47#if defined(CONFIG_MTD_UCLINUX)
48 /* move romfs image */
49 jsr @__move_romfs
50#endif
51
52 /* .bss clear */
53 mov.l #__sbss,er5
54 mov.l er5,er6
55 mov.l #__ebss,er4
56 sub.l er5,er4
57 shlr #2,er4
58 sub.l er0,er0
591:
60 mov.l er0,@er5
61 adds #4,er5
62 dec.l #1,er4
63 bne 1b
64
65 /* copy kernel commandline */
66 mov.l #COMMAND_START,er5
67 mov.l #SYMBOL_NAME(command_line),er6
68 mov.w #512,r4
69 eepmov.w
70
71 /* uClinux kernel start */
72 ldc #0x90,ccr /* running kernel */
73 mov.l #SYMBOL_NAME(init_thread_union),sp
74 add.l #0x2000,sp
75 jsr @_start_kernel
76_exit:
77
78 jmp _exit
79
80 rts
81
82 /* I/O port assign information */
83__platform_gpio_table:
84 mov.l #gpio_table,er0
85 rts
86
87gpio_table:
88 ;; P1DDR
89 ;; used,ddr
90 .byte 0x00,0x00
91 ;; P2DDR
92 .byte 0x00,0x00
93 ;; P3DDR
94 .byte 0x00,0x00
95 ;; dummy
96 .byte 0x00,0x00
97 ;; P5DDR
98 .byte 0x00,0x00
99 ;; P6DDR
100 .byte 0x00,0x00
101 ;; P7DDR
102 .byte 0x00,0x00
103 ;; P8DDR
104 .byte 0x00,0x00
105 ;; dummy
106 .byte 0x00,0x00
107 ;; PADDR
108 .byte 0x00,0x00
109 ;; PBDDR
110 .byte 0x00,0x00
111 ;; PCDDR
112 .byte 0x00,0x00
113 ;; PDDDR
114 .byte 0x00,0x00
115 ;; PEDDR
116 .byte 0x00,0x00
117 ;; PFDDR
118 .byte 0x00,0x00
119 ;; PGDDR
120 .byte 0x00,0x00
121 ;; PHDDR
122 .byte 0x00,0x00
123
124__target_name:
125 .asciz "generic"
126
127 .section .bootvec,"ax"
128 jmp @SYMBOL_NAME(_start)
diff --git a/arch/h8300/platform/h8s/generic/crt0_rom.S b/arch/h8300/platform/h8s/generic/crt0_rom.S
new file mode 100644
index 00000000000..e18e4120228
--- /dev/null
+++ b/arch/h8300/platform/h8s/generic/crt0_rom.S
@@ -0,0 +1,129 @@
1/*
2 * linux/arch/h8300/platform/h8s/generic/crt0_rom.S
3 *
4 * Yoshinori Sato <ysato@users.sourceforge.jp>
5 *
6 * Platform depend startup
7 * Target Archtecture: generic
8 * Memory Layout : ROM
9 */
10
11#define ASSEMBLY
12
13#include <linux/config.h>
14#include <asm/linkage.h>
15#include <asm/regs267x.h>
16
17 .global SYMBOL_NAME(_start)
18 .global SYMBOL_NAME(_command_line)
19 .global SYMBOL_NAME(_platform_gpio_table)
20 .global SYMBOL_NAME(_target_name)
21
22 .h8300s
23 .section .text
24 .file "crt0_rom.S"
25
26 /* CPU Reset entry */
27SYMBOL_NAME_LABEL(_start)
28 mov.l #__ramend,sp
29 ldc #0x80,ccr
30 ldc #0,exr
31 bclr #4,@INTCR:8
32 bset #5,@INTCR:8 /* Interrupt mode 2 */
33
34 /* Peripheral Setup */
35
36 /* copy .data */
37#if !defined(CONFIG_H8S_SIM)
38 mov.l #__begin_data,er5
39 mov.l #__sdata,er6
40 mov.l #__edata,er4
41 sub.l er6,er4
42 shlr.l #2,er4
431:
44 mov.l @er5+,er0
45 mov.l er0,@er6
46 adds #4,er6
47 dec.l #1,er4
48 bne 1b
49#endif
50
51 /* .bss clear */
52 mov.l #__sbss,er5
53 mov.l #__ebss,er4
54 sub.l er5,er4
55 shlr.l #2,er4
56 sub.l er0,er0
571:
58 mov.l er0,@er5
59 adds #4,er5
60 dec.l #1,er4
61 bne 1b
62
63 /* linux kernel start */
64 ldc #0x90,ccr /* running kernel */
65 mov.l #SYMBOL_NAME(init_thread_union),sp
66 add.l #0x2000,sp
67 jsr @_start_kernel
68_exit:
69
70 jmp _exit
71
72 rts
73
74 /* I/O port assign information */
75__platform_gpio_table:
76 mov.l #gpio_table,er0
77 rts
78
79gpio_table:
80 ;; P1DDR
81 .byte 0x00,0x00
82 ;; P2DDR
83 .byte 0x00,0x00
84 ;; P3DDR
85 .byte 0x00,0x00
86 ;; P4DDR
87 .byte 0x00,0x00
88 ;; P5DDR
89 .byte 0x00,0x00
90 ;; P6DDR
91 .byte 0x00,0x00
92 ;; dummy
93 .byte 0x00,0x00
94 ;; P8DDR
95 .byte 0x00,0x00
96 ;; PADDR
97 .byte 0x00,0x00
98 ;; PBDDR
99 .byte 0x00,0x00
100 ;; PCDDR
101 .byte 0x00,0x00
102 ;; PDDDR
103 .byte 0x00,0x00
104 ;; PEDDR
105 .byte 0x00,0x00
106 ;; PFDDR
107 .byte 0x00,0x00
108 ;; PGDDR
109 .byte 0x00,0x00
110 ;; PHDDR
111 .byte 0x00,0x00
112
113 .section .rodata
114__target_name:
115 .asciz "generic"
116
117 .section .bss
118__command_line:
119 .space 512
120
121 /* interrupt vector */
122 .section .vectors,"ax"
123 .long __start
124 .long __start
125vector = 2
126 .rept 126-1
127 .long _interrupt_redirect_table+vector*4
128vector = vector + 1
129 .endr
diff --git a/arch/h8300/platform/h8s/generic/timer.c b/arch/h8300/platform/h8s/generic/timer.c
new file mode 100644
index 00000000000..633cd8e1c21
--- /dev/null
+++ b/arch/h8300/platform/h8s/generic/timer.c
@@ -0,0 +1,54 @@
1/*
2 * linux/arch/h8300/platform/h8s/generic/timer.c
3 *
4 * Yoshinori Sato <ysato@users.sourceforge.jp>
5 *
6 * Platform depend Timer Handler
7 *
8 */
9
10#include <linux/config.h>
11#include <linux/errno.h>
12#include <linux/sched.h>
13#include <linux/kernel.h>
14#include <linux/param.h>
15#include <linux/string.h>
16#include <linux/mm.h>
17#include <linux/interrupt.h>
18#include <linux/init.h>
19#include <linux/timex.h>
20
21#include <asm/segment.h>
22#include <asm/io.h>
23#include <asm/irq.h>
24#include <asm/regs267x.h>
25
26#define CMFA 6
27
28#define CMIEA 0x40
29#define CCLR_CMA 0x08
30#define CLK_DIV8192 0x03
31
32#define H8300_TIMER_FREQ CONFIG_CPU_CLOCK*1000/8192 /* Timer input freq. */
33
34void __init platform_timer_setup(irqreturn_t (*timer_int)(int, void *, struct pt_regs *))
35{
36 /* 8bit timer module enabled */
37 ctrl_outb(ctrl_inb(MSTPCRL) & ~0x01, MSTPCRL);
38 /* setup 8bit timer ch1 */
39 ctrl_outb(H8300_TIMER_FREQ / HZ, _8TCORA1); /* set interval */
40 ctrl_outb(0x00, _8TCSR1); /* no output */
41 request_irq(76, timer_int, 0, "timer" ,0);
42 ctrl_outb(CMIEA|CCLR_CMA|CLK_DIV8192, _8TCR1); /* start count */
43}
44
45void platform_timer_eoi(void)
46{
47 *(volatile unsigned char *)_8TCSR1 &= ~(1 << CMFA);
48}
49
50void platform_gettod(int *year, int *mon, int *day, int *hour,
51 int *min, int *sec)
52{
53 *year = *mon = *day = *hour = *min = *sec = 0;
54}
diff --git a/arch/h8300/platform/h8s/ints.c b/arch/h8300/platform/h8s/ints.c
new file mode 100644
index 00000000000..5441cdd12a3
--- /dev/null
+++ b/arch/h8300/platform/h8s/ints.c
@@ -0,0 +1,303 @@
1/*
2 * linux/arch/h8300/platform/h8s/ints.c
3 *
4 * Yoshinori Sato <ysato@users.sourceforge.jp>
5 *
6 * Based on linux/arch/$(ARCH)/platform/$(PLATFORM)/ints.c
7 *
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file COPYING in the main directory of this archive
10 * for more details.
11 *
12 * Copyright 1996 Roman Zippel
13 * Copyright 1999 D. Jeff Dionne <jeff@rt-control.com>
14 */
15
16#include <linux/module.h>
17#include <linux/types.h>
18#include <linux/kernel.h>
19#include <linux/sched.h>
20#include <linux/kernel_stat.h>
21#include <linux/seq_file.h>
22#include <linux/init.h>
23#include <linux/bootmem.h>
24#include <linux/random.h>
25#include <linux/hardirq.h>
26
27#include <asm/system.h>
28#include <asm/irq.h>
29#include <asm/traps.h>
30#include <asm/io.h>
31#include <asm/setup.h>
32#include <asm/gpio.h>
33#include <asm/regs267x.h>
34#include <asm/errno.h>
35
36/*
37 * This structure has only 4 elements for speed reasons
38 */
39typedef struct irq_handler {
40 irqreturn_t (*handler)(int, void *, struct pt_regs *);
41 int flags;
42 int count;
43 void *dev_id;
44 const char *devname;
45} irq_handler_t;
46
47static irq_handler_t *irq_list[NR_IRQS];
48
49/* IRQ pin assignment */
50struct irq_pins {
51 unsigned char port_no;
52 unsigned char bit_no;
53};
54/* ISTR = 0 */
55const static struct irq_pins irq_assign_table0[16]={
56 {H8300_GPIO_P5,H8300_GPIO_B0},{H8300_GPIO_P5,H8300_GPIO_B1},
57 {H8300_GPIO_P5,H8300_GPIO_B2},{H8300_GPIO_P5,H8300_GPIO_B3},
58 {H8300_GPIO_P5,H8300_GPIO_B4},{H8300_GPIO_P5,H8300_GPIO_B5},
59 {H8300_GPIO_P5,H8300_GPIO_B6},{H8300_GPIO_P5,H8300_GPIO_B7},
60 {H8300_GPIO_P6,H8300_GPIO_B0},{H8300_GPIO_P6,H8300_GPIO_B1},
61 {H8300_GPIO_P6,H8300_GPIO_B2},{H8300_GPIO_P6,H8300_GPIO_B3},
62 {H8300_GPIO_P6,H8300_GPIO_B4},{H8300_GPIO_P6,H8300_GPIO_B5},
63 {H8300_GPIO_PF,H8300_GPIO_B1},{H8300_GPIO_PF,H8300_GPIO_B2},
64};
65/* ISTR = 1 */
66const static struct irq_pins irq_assign_table1[16]={
67 {H8300_GPIO_P8,H8300_GPIO_B0},{H8300_GPIO_P8,H8300_GPIO_B1},
68 {H8300_GPIO_P8,H8300_GPIO_B2},{H8300_GPIO_P8,H8300_GPIO_B3},
69 {H8300_GPIO_P8,H8300_GPIO_B4},{H8300_GPIO_P8,H8300_GPIO_B5},
70 {H8300_GPIO_PH,H8300_GPIO_B2},{H8300_GPIO_PH,H8300_GPIO_B3},
71 {H8300_GPIO_P2,H8300_GPIO_B0},{H8300_GPIO_P2,H8300_GPIO_B1},
72 {H8300_GPIO_P2,H8300_GPIO_B2},{H8300_GPIO_P2,H8300_GPIO_B3},
73 {H8300_GPIO_P2,H8300_GPIO_B4},{H8300_GPIO_P2,H8300_GPIO_B5},
74 {H8300_GPIO_P2,H8300_GPIO_B6},{H8300_GPIO_P2,H8300_GPIO_B7},
75};
76
77static short use_kmalloc = 0;
78
79extern unsigned long *interrupt_redirect_table;
80
81#define CPU_VECTOR ((unsigned long *)0x000000)
82#define ADDR_MASK (0xffffff)
83
84static inline unsigned long *get_vector_address(void)
85{
86 volatile unsigned long *rom_vector = CPU_VECTOR;
87 unsigned long base,tmp;
88 int vec_no;
89
90 base = rom_vector[EXT_IRQ0] & ADDR_MASK;
91
92 /* check romvector format */
93 for (vec_no = EXT_IRQ1; vec_no <= EXT_IRQ15; vec_no++) {
94 if ((base+(vec_no - EXT_IRQ0)*4) != (rom_vector[vec_no] & ADDR_MASK))
95 return NULL;
96 }
97
98 /* ramvector base address */
99 base -= EXT_IRQ0*4;
100
101 /* writerble check */
102 tmp = ~(*(unsigned long *)base);
103 (*(unsigned long *)base) = tmp;
104 if ((*(unsigned long *)base) != tmp)
105 return NULL;
106 return (unsigned long *)base;
107}
108
109void __init init_IRQ(void)
110{
111#if defined(CONFIG_RAMKERNEL)
112 int i;
113 unsigned long *ramvec,*ramvec_p;
114 unsigned long break_vec;
115
116 ramvec = get_vector_address();
117 if (ramvec == NULL)
118 panic("interrupt vector serup failed.");
119 else
120 printk("virtual vector at 0x%08lx\n",(unsigned long)ramvec);
121
122#if defined(CONFIG_GDB_DEBUG)
123 /* save orignal break vector */
124 break_vec = ramvec[TRAP3_VEC];
125#else
126 break_vec = VECTOR(trace_break);
127#endif
128
129 /* create redirect table */
130 for (ramvec_p = ramvec, i = 0; i < NR_IRQS; i++)
131 *ramvec_p++ = REDIRECT(interrupt_entry);
132
133 /* set special vector */
134 ramvec[TRAP0_VEC] = VECTOR(system_call);
135 ramvec[TRAP3_VEC] = break_vec;
136 interrupt_redirect_table = ramvec;
137#ifdef DUMP_VECTOR
138 ramvec_p = ramvec;
139 for (i = 0; i < NR_IRQS; i++) {
140 if ((i % 8) == 0)
141 printk("\n%p: ",ramvec_p);
142 printk("%p ",*ramvec_p);
143 ramvec_p++;
144 }
145 printk("\n");
146#endif
147#endif
148}
149
150int request_irq(unsigned int irq,
151 irqreturn_t (*handler)(int, void *, struct pt_regs *),
152 unsigned long flags, const char *devname, void *dev_id)
153{
154 unsigned short ptn = 1 << (irq - EXT_IRQ0);
155 irq_handler_t *irq_handle;
156 if (irq < 0 || irq >= NR_IRQS) {
157 printk("Incorrect IRQ %d from %s\n", irq, devname);
158 return -EINVAL;
159 }
160 if (irq_list[irq])
161 return -EBUSY; /* already used */
162 if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) {
163 /* initialize IRQ pin */
164 unsigned int port_no,bit_no;
165 if (*(volatile unsigned short *)ITSR & ptn) {
166 port_no = irq_assign_table1[irq - EXT_IRQ0].port_no;
167 bit_no = irq_assign_table1[irq - EXT_IRQ0].bit_no;
168 } else {
169 port_no = irq_assign_table0[irq - EXT_IRQ0].port_no;
170 bit_no = irq_assign_table0[irq - EXT_IRQ0].bit_no;
171 }
172 if (H8300_GPIO_RESERVE(port_no, bit_no) == 0)
173 return -EBUSY; /* pin already use */
174 H8300_GPIO_DDR(port_no, bit_no, H8300_GPIO_INPUT);
175 *(volatile unsigned short *)ISR &= ~ptn; /* ISR clear */
176 }
177
178 if (use_kmalloc)
179 irq_handle = (irq_handler_t *)kmalloc(sizeof(irq_handler_t), GFP_ATOMIC);
180 else {
181 /* use bootmem allocater */
182 irq_handle = (irq_handler_t *)alloc_bootmem(sizeof(irq_handler_t));
183 irq_handle = (irq_handler_t *)((unsigned long)irq_handle | 0x80000000);
184 }
185
186 if (irq_handle == NULL)
187 return -ENOMEM;
188
189 irq_handle->handler = handler;
190 irq_handle->flags = flags;
191 irq_handle->count = 0;
192 irq_handle->dev_id = dev_id;
193 irq_handle->devname = devname;
194 irq_list[irq] = irq_handle;
195 if (irq_handle->flags & SA_SAMPLE_RANDOM)
196 rand_initialize_irq(irq);
197
198 /* enable interrupt */
199 /* compatible i386 */
200 if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15)
201 *(volatile unsigned short *)IER |= ptn;
202 return 0;
203}
204
205EXPORT_SYMBOL(request_irq);
206
207void free_irq(unsigned int irq, void *dev_id)
208{
209 if (irq >= NR_IRQS)
210 return;
211 if (irq_list[irq]->dev_id != dev_id)
212 printk("%s: Removing probably wrong IRQ %d from %s\n",
213 __FUNCTION__, irq, irq_list[irq]->devname);
214 if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) {
215 /* disable interrupt & release IRQ pin */
216 unsigned short port_no,bit_no;
217 *(volatile unsigned short *)ISR &= ~(1 << (irq - EXT_IRQ0));
218 *(volatile unsigned short *)IER |= 1 << (irq - EXT_IRQ0);
219 if (*(volatile unsigned short *)ITSR & (1 << (irq - EXT_IRQ0))) {
220 port_no = irq_assign_table1[irq - EXT_IRQ0].port_no;
221 bit_no = irq_assign_table1[irq - EXT_IRQ0].bit_no;
222 } else {
223 port_no = irq_assign_table0[irq - EXT_IRQ0].port_no;
224 bit_no = irq_assign_table0[irq - EXT_IRQ0].bit_no;
225 }
226 H8300_GPIO_FREE(port_no, bit_no);
227 }
228 if (((unsigned long)irq_list[irq] & 0x80000000) == 0) {
229 kfree(irq_list[irq]);
230 irq_list[irq] = NULL;
231 }
232}
233
234EXPORT_SYMBOL(free_irq);
235
236unsigned long probe_irq_on (void)
237{
238 return 0;
239}
240
241EXPORT_SYMBOL(probe_irq_on);
242
243int probe_irq_off (unsigned long irqs)
244{
245 return 0;
246}
247
248EXPORT_SYMBOL(probe_irq_off);
249
250void enable_irq(unsigned int irq)
251{
252 if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15)
253 *(volatile unsigned short *)IER |= 1 << (irq - EXT_IRQ0);
254}
255
256void disable_irq(unsigned int irq)
257{
258 if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15)
259 *(volatile unsigned short *)IER &= ~(1 << (irq - EXT_IRQ0));
260}
261
262asmlinkage void process_int(unsigned long vec, struct pt_regs *fp)
263{
264 irq_enter();
265 /* ISR clear */
266 /* compatible i386 */
267 if (vec >= EXT_IRQ0 && vec <= EXT_IRQ15)
268 *(volatile unsigned short *)ISR &= ~(1 << (vec - EXT_IRQ0));
269 if (vec < NR_IRQS) {
270 if (irq_list[vec]) {
271 irq_list[vec]->handler(vec, irq_list[vec]->dev_id, fp);
272 irq_list[vec]->count++;
273 if (irq_list[vec]->flags & SA_SAMPLE_RANDOM)
274 add_interrupt_randomness(vec);
275 }
276 } else {
277 BUG();
278 }
279 irq_exit();
280}
281
282int show_interrupts(struct seq_file *p, void *v)
283{
284 int i = *(loff_t *) v;
285
286 if ((i < NR_IRQS) && (irq_list[i] !=NULL)) {
287 seq_printf(p, "%3d: %10u ",i,irq_list[i]->count);
288 seq_printf(p, "%s\n", irq_list[i]->devname);
289 }
290
291 return 0;
292}
293
294void init_irq_proc(void)
295{
296}
297
298static int __init enable_kmalloc(void)
299{
300 use_kmalloc = 1;
301 return 0;
302}
303core_initcall(enable_kmalloc);
diff --git a/arch/h8300/platform/h8s/ints_h8s.c b/arch/h8300/platform/h8s/ints_h8s.c
new file mode 100644
index 00000000000..f53de493e3e
--- /dev/null
+++ b/arch/h8300/platform/h8s/ints_h8s.c
@@ -0,0 +1,105 @@
1/*
2 * linux/arch/h8300/platform/h8s/ints_h8s.c
3 * Interrupt handling CPU variants
4 *
5 * Yoshinori Sato <ysato@users.sourceforge.jp>
6 *
7 */
8
9#include <linux/config.h>
10#include <linux/init.h>
11#include <linux/errno.h>
12#include <linux/kernel.h>
13
14#include <asm/ptrace.h>
15#include <asm/traps.h>
16#include <asm/irq.h>
17#include <asm/io.h>
18#include <asm/gpio.h>
19#include <asm/regs267x.h>
20
21/* saved vector list */
22const int __initdata h8300_saved_vectors[]={
23#if defined(CONFIG_GDB_DEBUG)
24 TRACE_VEC,
25 TRAP3_VEC,
26#endif
27 -1
28};
29
30/* trap entry table */
31const unsigned long __initdata h8300_trap_table[NR_TRAPS]={
32 0,0,0,0,0,
33 (unsigned long)trace_break, /* TRACE */
34 0,0,
35 (unsigned long)system_call, /* TRAPA #0 */
36 0,0,0,0,0,0,0
37};
38
39/* IRQ pin assignment */
40struct irq_pins {
41 unsigned char port_no;
42 unsigned char bit_no;
43} __attribute__((aligned(1),packed));
44/* ISTR = 0 */
45const static struct irq_pins irq_assign_table0[16]={
46 {H8300_GPIO_P5,H8300_GPIO_B0},{H8300_GPIO_P5,H8300_GPIO_B1},
47 {H8300_GPIO_P5,H8300_GPIO_B2},{H8300_GPIO_P5,H8300_GPIO_B3},
48 {H8300_GPIO_P5,H8300_GPIO_B4},{H8300_GPIO_P5,H8300_GPIO_B5},
49 {H8300_GPIO_P5,H8300_GPIO_B6},{H8300_GPIO_P5,H8300_GPIO_B7},
50 {H8300_GPIO_P6,H8300_GPIO_B0},{H8300_GPIO_P6,H8300_GPIO_B1},
51 {H8300_GPIO_P6,H8300_GPIO_B2},{H8300_GPIO_P6,H8300_GPIO_B3},
52 {H8300_GPIO_P6,H8300_GPIO_B4},{H8300_GPIO_P6,H8300_GPIO_B5},
53 {H8300_GPIO_PF,H8300_GPIO_B1},{H8300_GPIO_PF,H8300_GPIO_B2},
54};
55/* ISTR = 1 */
56const static struct irq_pins irq_assign_table1[16]={
57 {H8300_GPIO_P8,H8300_GPIO_B0},{H8300_GPIO_P8,H8300_GPIO_B1},
58 {H8300_GPIO_P8,H8300_GPIO_B2},{H8300_GPIO_P8,H8300_GPIO_B3},
59 {H8300_GPIO_P8,H8300_GPIO_B4},{H8300_GPIO_P8,H8300_GPIO_B5},
60 {H8300_GPIO_PH,H8300_GPIO_B2},{H8300_GPIO_PH,H8300_GPIO_B3},
61 {H8300_GPIO_P2,H8300_GPIO_B0},{H8300_GPIO_P2,H8300_GPIO_B1},
62 {H8300_GPIO_P2,H8300_GPIO_B2},{H8300_GPIO_P2,H8300_GPIO_B3},
63 {H8300_GPIO_P2,H8300_GPIO_B4},{H8300_GPIO_P2,H8300_GPIO_B5},
64 {H8300_GPIO_P2,H8300_GPIO_B6},{H8300_GPIO_P2,H8300_GPIO_B7},
65};
66
67/* IRQ to GPIO pinno transrate */
68#define IRQ_GPIO_MAP(irqbit,irq,port,bit) \
69do { \
70 if (*(volatile unsigned short *)ITSR & irqbit) { \
71 port = irq_assign_table1[irq - EXT_IRQ0].port_no; \
72 bit = irq_assign_table1[irq - EXT_IRQ0].bit_no; \
73 } else { \
74 port = irq_assign_table0[irq - EXT_IRQ0].port_no; \
75 bit = irq_assign_table0[irq - EXT_IRQ0].bit_no; \
76 } \
77} while(0)
78
79int h8300_enable_irq_pin(unsigned int irq)
80{
81 if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) {
82 unsigned short ptn = 1 << (irq - EXT_IRQ0);
83 unsigned int port_no,bit_no;
84 IRQ_GPIO_MAP(ptn, irq, port_no, bit_no);
85 if (H8300_GPIO_RESERVE(port_no, bit_no) == 0)
86 return -EBUSY; /* pin already use */
87 H8300_GPIO_DDR(port_no, bit_no, H8300_GPIO_INPUT);
88 *(volatile unsigned short *)ISR &= ~ptn; /* ISR clear */
89 }
90
91 return 0;
92}
93
94void h8300_disable_irq_pin(unsigned int irq)
95{
96 if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) {
97 /* disable interrupt & release IRQ pin */
98 unsigned short ptn = 1 << (irq - EXT_IRQ0);
99 unsigned short port_no,bit_no;
100 *(volatile unsigned short *)ISR &= ~ptn;
101 *(volatile unsigned short *)IER &= ~ptn;
102 IRQ_GPIO_MAP(ptn, irq, port_no, bit_no);
103 H8300_GPIO_FREE(port_no, bit_no);
104 }
105}
diff --git a/arch/h8300/platform/h8s/ptrace_h8s.c b/arch/h8300/platform/h8s/ptrace_h8s.c
new file mode 100644
index 00000000000..e8cd46f9255
--- /dev/null
+++ b/arch/h8300/platform/h8s/ptrace_h8s.c
@@ -0,0 +1,84 @@
1/*
2 * linux/arch/h8300/platform/h8s/ptrace_h8s.c
3 * ptrace cpu depend helper functions
4 *
5 * Yoshinori Sato <ysato@users.sourceforge.jp>
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
9 * this archive for more details.
10 */
11
12#include <linux/linkage.h>
13#include <linux/sched.h>
14#include <linux/errno.h>
15#include <asm/ptrace.h>
16
17#define CCR_MASK 0x6f
18#define EXR_TRACE 0x80
19
20/* Mapping from PT_xxx to the stack offset at which the register is
21 saved. Notice that usp has no stack-slot and needs to be treated
22 specially (see get_reg/put_reg below). */
23static const int h8300_register_offset[] = {
24 PT_REG(er1), PT_REG(er2), PT_REG(er3), PT_REG(er4),
25 PT_REG(er5), PT_REG(er6), PT_REG(er0), PT_REG(orig_er0),
26 PT_REG(ccr), PT_REG(pc), 0, PT_REG(exr)
27};
28
29/* read register */
30long h8300_get_reg(struct task_struct *task, int regno)
31{
32 switch (regno) {
33 case PT_USP:
34 return task->thread.usp + sizeof(long)*2 + 2;
35 case PT_CCR:
36 case PT_EXR:
37 return *(unsigned short *)(task->thread.esp0 + h8300_register_offset[regno]);
38 default:
39 return *(unsigned long *)(task->thread.esp0 + h8300_register_offset[regno]);
40 }
41}
42
43/* write register */
44int h8300_put_reg(struct task_struct *task, int regno, unsigned long data)
45{
46 unsigned short oldccr;
47 switch (regno) {
48 case PT_USP:
49 task->thread.usp = data - sizeof(long)*2 - 2;
50 case PT_CCR:
51 oldccr = *(unsigned short *)(task->thread.esp0 + h8300_register_offset[regno]);
52 oldccr &= ~CCR_MASK;
53 data &= CCR_MASK;
54 data |= oldccr;
55 *(unsigned short *)(task->thread.esp0 + h8300_register_offset[regno]) = data;
56 break;
57 case PT_EXR:
58 /* exr modify not support */
59 return -EIO;
60 default:
61 *(unsigned long *)(task->thread.esp0 + h8300_register_offset[regno]) = data;
62 break;
63 }
64 return 0;
65}
66
67/* disable singlestep */
68void h8300_disable_trace(struct task_struct *child)
69{
70 *(unsigned short *)(child->thread.esp0 + h8300_register_offset[PT_EXR]) &= ~EXR_TRACE;
71}
72
73/* enable singlestep */
74void h8300_enable_trace(struct task_struct *child)
75{
76 *(unsigned short *)(child->thread.esp0 + h8300_register_offset[PT_EXR]) |= EXR_TRACE;
77}
78
79asmlinkage void trace_trap(unsigned long bp)
80{
81 (void)bp;
82 force_sig(SIGTRAP,current);
83}
84
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-21 16:55:04 -0400