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-rw-r--r--arch/sh/kernel/Makefile_322
-rw-r--r--arch/sh/kernel/Makefile_642
-rw-r--r--arch/sh/kernel/idle.c81
-rw-r--r--arch/sh/kernel/process_32.c61
-rw-r--r--arch/sh/kernel/process_64.c60
5 files changed, 83 insertions, 123 deletions
diff --git a/arch/sh/kernel/Makefile_32 b/arch/sh/kernel/Makefile_32
index d3f2726b07dc..d9df9e567946 100644
--- a/arch/sh/kernel/Makefile_32
+++ b/arch/sh/kernel/Makefile_32
@@ -9,7 +9,7 @@ ifdef CONFIG_FUNCTION_TRACER
9CFLAGS_REMOVE_ftrace.o = -pg 9CFLAGS_REMOVE_ftrace.o = -pg
10endif 10endif
11 11
12obj-y := debugtraps.o disassemble.o io.o io_generic.o irq.o \ 12obj-y := debugtraps.o disassemble.o idle.o io.o io_generic.o irq.o \
13 machvec.o process_32.o ptrace_32.o setup.o signal_32.o \ 13 machvec.o process_32.o ptrace_32.o setup.o signal_32.o \
14 sys_sh.o sys_sh32.o syscalls_32.o time_32.o topology.o \ 14 sys_sh.o sys_sh32.o syscalls_32.o time_32.o topology.o \
15 traps.o traps_32.o 15 traps.o traps_32.o
diff --git a/arch/sh/kernel/Makefile_64 b/arch/sh/kernel/Makefile_64
index c97660b2b48d..4304b2593c2c 100644
--- a/arch/sh/kernel/Makefile_64
+++ b/arch/sh/kernel/Makefile_64
@@ -1,6 +1,6 @@
1extra-y := head_64.o init_task.o vmlinux.lds 1extra-y := head_64.o init_task.o vmlinux.lds
2 2
3obj-y := debugtraps.o io.o io_generic.o irq.o machvec.o process_64.o \ 3obj-y := debugtraps.o idle.o io.o io_generic.o irq.o machvec.o process_64.o \
4 ptrace_64.o setup.o signal_64.o sys_sh.o sys_sh64.o \ 4 ptrace_64.o setup.o signal_64.o sys_sh.o sys_sh64.o \
5 syscalls_64.o time_64.o topology.o traps.o traps_64.o 5 syscalls_64.o time_64.o topology.o traps.o traps_64.o
6 6
diff --git a/arch/sh/kernel/idle.c b/arch/sh/kernel/idle.c
new file mode 100644
index 000000000000..fe59ccfc1152
--- /dev/null
+++ b/arch/sh/kernel/idle.c
@@ -0,0 +1,81 @@
1/*
2 * The idle loop for all SuperH platforms.
3 *
4 * Copyright (C) 2002 - 2008 Paul Mundt
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 */
10#include <linux/module.h>
11#include <linux/init.h>
12#include <linux/mm.h>
13#include <linux/pm.h>
14#include <linux/tick.h>
15#include <linux/preempt.h>
16#include <linux/thread_info.h>
17#include <linux/irqflags.h>
18#include <asm/pgalloc.h>
19#include <asm/system.h>
20#include <asm/atomic.h>
21
22static int hlt_counter;
23void (*pm_idle)(void);
24void (*pm_power_off)(void);
25EXPORT_SYMBOL(pm_power_off);
26
27static int __init nohlt_setup(char *__unused)
28{
29 hlt_counter = 1;
30 return 1;
31}
32__setup("nohlt", nohlt_setup);
33
34static int __init hlt_setup(char *__unused)
35{
36 hlt_counter = 0;
37 return 1;
38}
39__setup("hlt", hlt_setup);
40
41static void default_idle(void)
42{
43 if (!hlt_counter) {
44 clear_thread_flag(TIF_POLLING_NRFLAG);
45 smp_mb__after_clear_bit();
46 set_bl_bit();
47 stop_critical_timings();
48
49 while (!need_resched())
50 cpu_sleep();
51
52 start_critical_timings();
53 clear_bl_bit();
54 set_thread_flag(TIF_POLLING_NRFLAG);
55 } else
56 while (!need_resched())
57 cpu_relax();
58}
59
60void cpu_idle(void)
61{
62 set_thread_flag(TIF_POLLING_NRFLAG);
63
64 /* endless idle loop with no priority at all */
65 while (1) {
66 void (*idle)(void) = pm_idle;
67
68 if (!idle)
69 idle = default_idle;
70
71 tick_nohz_stop_sched_tick(1);
72 while (!need_resched())
73 idle();
74 tick_nohz_restart_sched_tick();
75
76 preempt_enable_no_resched();
77 schedule();
78 preempt_disable();
79 check_pgt_cache();
80 }
81}
diff --git a/arch/sh/kernel/process_32.c b/arch/sh/kernel/process_32.c
index e781540bd991..130817affa64 100644
--- a/arch/sh/kernel/process_32.c
+++ b/arch/sh/kernel/process_32.c
@@ -32,69 +32,8 @@
32#include <asm/fpu.h> 32#include <asm/fpu.h>
33#include <asm/syscalls.h> 33#include <asm/syscalls.h>
34 34
35static int hlt_counter;
36int ubc_usercnt = 0; 35int ubc_usercnt = 0;
37 36
38void (*pm_idle)(void);
39void (*pm_power_off)(void);
40EXPORT_SYMBOL(pm_power_off);
41
42static int __init nohlt_setup(char *__unused)
43{
44 hlt_counter = 1;
45 return 1;
46}
47__setup("nohlt", nohlt_setup);
48
49static int __init hlt_setup(char *__unused)
50{
51 hlt_counter = 0;
52 return 1;
53}
54__setup("hlt", hlt_setup);
55
56static void default_idle(void)
57{
58 if (!hlt_counter) {
59 clear_thread_flag(TIF_POLLING_NRFLAG);
60 smp_mb__after_clear_bit();
61 set_bl_bit();
62 stop_critical_timings();
63
64 while (!need_resched())
65 cpu_sleep();
66
67 start_critical_timings();
68 clear_bl_bit();
69 set_thread_flag(TIF_POLLING_NRFLAG);
70 } else
71 while (!need_resched())
72 cpu_relax();
73}
74
75void cpu_idle(void)
76{
77 set_thread_flag(TIF_POLLING_NRFLAG);
78
79 /* endless idle loop with no priority at all */
80 while (1) {
81 void (*idle)(void) = pm_idle;
82
83 if (!idle)
84 idle = default_idle;
85
86 tick_nohz_stop_sched_tick(1);
87 while (!need_resched())
88 idle();
89 tick_nohz_restart_sched_tick();
90
91 preempt_enable_no_resched();
92 schedule();
93 preempt_disable();
94 check_pgt_cache();
95 }
96}
97
98void machine_restart(char * __unused) 37void machine_restart(char * __unused)
99{ 38{
100 /* SR.BL=1 and invoke address error to let CPU reset (manual reset) */ 39 /* SR.BL=1 and invoke address error to let CPU reset (manual reset) */
diff --git a/arch/sh/kernel/process_64.c b/arch/sh/kernel/process_64.c
index b7aa09235b51..597cf02db3fc 100644
--- a/arch/sh/kernel/process_64.c
+++ b/arch/sh/kernel/process_64.c
@@ -33,56 +33,6 @@
33 33
34struct task_struct *last_task_used_math = NULL; 34struct task_struct *last_task_used_math = NULL;
35 35
36static int hlt_counter = 1;
37
38#define HARD_IDLE_TIMEOUT (HZ / 3)
39
40static int __init nohlt_setup(char *__unused)
41{
42 hlt_counter = 1;
43 return 1;
44}
45
46static int __init hlt_setup(char *__unused)
47{
48 hlt_counter = 0;
49 return 1;
50}
51
52__setup("nohlt", nohlt_setup);
53__setup("hlt", hlt_setup);
54
55static inline void hlt(void)
56{
57 __asm__ __volatile__ ("sleep" : : : "memory");
58}
59
60/*
61 * The idle loop on a uniprocessor SH..
62 */
63void cpu_idle(void)
64{
65 /* endless idle loop with no priority at all */
66 while (1) {
67 if (hlt_counter) {
68 while (!need_resched())
69 cpu_relax();
70 } else {
71 local_irq_disable();
72 while (!need_resched()) {
73 local_irq_enable();
74 hlt();
75 local_irq_disable();
76 }
77 local_irq_enable();
78 }
79 preempt_enable_no_resched();
80 schedule();
81 preempt_disable();
82 }
83
84}
85
86void machine_restart(char * __unused) 36void machine_restart(char * __unused)
87{ 37{
88 extern void phys_stext(void); 38 extern void phys_stext(void);
@@ -97,13 +47,6 @@ void machine_halt(void)
97 47
98void machine_power_off(void) 48void machine_power_off(void)
99{ 49{
100#if 0
101 /* Disable watchdog timer */
102 ctrl_outl(0xa5000000, WTCSR);
103 /* Configure deep standby on sleep */
104 ctrl_outl(0x03, STBCR);
105#endif
106
107 __asm__ __volatile__ ( 50 __asm__ __volatile__ (
108 "sleep\n\t" 51 "sleep\n\t"
109 "synci\n\t" 52 "synci\n\t"
@@ -113,9 +56,6 @@ void machine_power_off(void)
113 panic("Unexpected wakeup!\n"); 56 panic("Unexpected wakeup!\n");
114} 57}
115 58
116void (*pm_power_off)(void) = machine_power_off;
117EXPORT_SYMBOL(pm_power_off);
118
119void show_regs(struct pt_regs * regs) 59void show_regs(struct pt_regs * regs)
120{ 60{
121 unsigned long long ah, al, bh, bl, ch, cl; 61 unsigned long long ah, al, bh, bl, ch, cl;
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-26 00:53:09 -0500