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-rw-r--r--arch/cris/arch-v10/kernel/process.c6
-rw-r--r--arch/cris/arch-v32/kernel/process.c15
-rw-r--r--arch/cris/arch-v32/kernel/smp.c4
-rw-r--r--arch/cris/arch-v32/mach-a3/Makefile1
-rw-r--r--arch/cris/arch-v32/mach-a3/cpufreq.c152
-rw-r--r--arch/cris/arch-v32/mach-fs/Makefile1
-rw-r--r--arch/cris/arch-v32/mach-fs/cpufreq.c145
-rw-r--r--arch/cris/include/asm/processor.h7
-rw-r--r--arch/cris/include/asm/unistd.h8
-rw-r--r--arch/cris/kernel/process.c49
-rw-r--r--arch/cris/kernel/traps.c7
-rw-r--r--arch/cris/mm/init.c16
12 files changed, 16 insertions, 395 deletions
diff --git a/arch/cris/arch-v10/kernel/process.c b/arch/cris/arch-v10/kernel/process.c
index b1018750cff..753e9a03cf8 100644
--- a/arch/cris/arch-v10/kernel/process.c
+++ b/arch/cris/arch-v10/kernel/process.c
@@ -30,8 +30,9 @@ void etrax_gpio_wake_up_check(void); /* drivers/gpio.c */
void default_idle(void)
{
#ifdef CONFIG_ETRAX_GPIO
- etrax_gpio_wake_up_check();
+ etrax_gpio_wake_up_check();
#endif
+ local_irq_enable();
}
/*
@@ -175,6 +176,9 @@ unsigned long get_wchan(struct task_struct *p)
void show_regs(struct pt_regs * regs)
{
unsigned long usp = rdusp();
+
+ show_regs_print_info(KERN_DEFAULT);
+
printk("IRP: %08lx SRP: %08lx DCCR: %08lx USP: %08lx MOF: %08lx\n",
regs->irp, regs->srp, regs->dccr, usp, regs->mof );
printk(" r0: %08lx r1: %08lx r2: %08lx r3: %08lx\n",
diff --git a/arch/cris/arch-v32/kernel/process.c b/arch/cris/arch-v32/kernel/process.c
index 2b23ef0e445..cebd32e2a8f 100644
--- a/arch/cris/arch-v32/kernel/process.c
+++ b/arch/cris/arch-v32/kernel/process.c
@@ -20,18 +20,12 @@
extern void stop_watchdog(void);
-extern int cris_hlt_counter;
-
/* We use this if we don't have any better idle routine. */
void default_idle(void)
{
- local_irq_disable();
- if (!need_resched() && !cris_hlt_counter) {
- /* Halt until exception. */
- __asm__ volatile("ei \n\t"
- "halt ");
- }
- local_irq_enable();
+ /* Halt until exception. */
+ __asm__ volatile("ei \n\t"
+ "halt ");
}
/*
@@ -170,6 +164,9 @@ get_wchan(struct task_struct *p)
void show_regs(struct pt_regs * regs)
{
unsigned long usp = rdusp();
+
+ show_regs_print_info(KERN_DEFAULT);
+
printk("ERP: %08lx SRP: %08lx CCS: %08lx USP: %08lx MOF: %08lx\n",
regs->erp, regs->srp, regs->ccs, usp, regs->mof);
diff --git a/arch/cris/arch-v32/kernel/smp.c b/arch/cris/arch-v32/kernel/smp.c
index 04a16edd540..cdd12028de0 100644
--- a/arch/cris/arch-v32/kernel/smp.c
+++ b/arch/cris/arch-v32/kernel/smp.c
@@ -145,8 +145,6 @@ smp_boot_one_cpu(int cpuid, struct task_struct idle)
* specific stuff such as the local timer and the MMU. */
void __init smp_callin(void)
{
- extern void cpu_idle(void);
-
int cpu = cpu_now_booting;
reg_intr_vect_rw_mask vect_mask = {0};
@@ -170,7 +168,7 @@ void __init smp_callin(void)
local_irq_enable();
set_cpu_online(cpu, true);
- cpu_idle();
+ cpu_startup_entry(CPUHP_ONLINE);
}
/* Stop execution on this CPU.*/
diff --git a/arch/cris/arch-v32/mach-a3/Makefile b/arch/cris/arch-v32/mach-a3/Makefile
index d366e089198..18a227196a4 100644
--- a/arch/cris/arch-v32/mach-a3/Makefile
+++ b/arch/cris/arch-v32/mach-a3/Makefile
@@ -3,7 +3,6 @@
#
obj-y := dma.o pinmux.o io.o arbiter.o
-obj-$(CONFIG_CPU_FREQ) += cpufreq.o
clean:
diff --git a/arch/cris/arch-v32/mach-a3/cpufreq.c b/arch/cris/arch-v32/mach-a3/cpufreq.c
deleted file mode 100644
index ee391ecb5bc..00000000000
--- a/arch/cris/arch-v32/mach-a3/cpufreq.c
+++ /dev/null
@@ -1,152 +0,0 @@
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/cpufreq.h>
-#include <hwregs/reg_map.h>
-#include <hwregs/reg_rdwr.h>
-#include <hwregs/clkgen_defs.h>
-#include <hwregs/ddr2_defs.h>
-
-static int
-cris_sdram_freq_notifier(struct notifier_block *nb, unsigned long val,
- void *data);
-
-static struct notifier_block cris_sdram_freq_notifier_block = {
- .notifier_call = cris_sdram_freq_notifier
-};
-
-static struct cpufreq_frequency_table cris_freq_table[] = {
- {0x01, 6000},
- {0x02, 200000},
- {0, CPUFREQ_TABLE_END},
-};
-
-static unsigned int cris_freq_get_cpu_frequency(unsigned int cpu)
-{
- reg_clkgen_rw_clk_ctrl clk_ctrl;
- clk_ctrl = REG_RD(clkgen, regi_clkgen, rw_clk_ctrl);
- return clk_ctrl.pll ? 200000 : 6000;
-}
-
-static void cris_freq_set_cpu_state(unsigned int state)
-{
- int i = 0;
- struct cpufreq_freqs freqs;
- reg_clkgen_rw_clk_ctrl clk_ctrl;
- clk_ctrl = REG_RD(clkgen, regi_clkgen, rw_clk_ctrl);
-
-#ifdef CONFIG_SMP
- for_each_present_cpu(i)
-#endif
- {
- freqs.old = cris_freq_get_cpu_frequency(i);
- freqs.new = cris_freq_table[state].frequency;
- freqs.cpu = i;
- }
-
- cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
-
- local_irq_disable();
-
- /* Even though we may be SMP they will share the same clock
- * so all settings are made on CPU0. */
- if (cris_freq_table[state].frequency == 200000)
- clk_ctrl.pll = 1;
- else
- clk_ctrl.pll = 0;
- REG_WR(clkgen, regi_clkgen, rw_clk_ctrl, clk_ctrl);
-
- local_irq_enable();
-
- cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
-};
-
-static int cris_freq_verify(struct cpufreq_policy *policy)
-{
- return cpufreq_frequency_table_verify(policy, &cris_freq_table[0]);
-}
-
-static int cris_freq_target(struct cpufreq_policy *policy,
- unsigned int target_freq,
- unsigned int relation)
-{
- unsigned int newstate = 0;
-
- if (cpufreq_frequency_table_target(policy, cris_freq_table,
- target_freq, relation, &newstate))
- return -EINVAL;
-
- cris_freq_set_cpu_state(newstate);
-
- return 0;
-}
-
-static int cris_freq_cpu_init(struct cpufreq_policy *policy)
-{
- int result;
-
- /* cpuinfo and default policy values */
- policy->cpuinfo.transition_latency = 1000000; /* 1ms */
- policy->cur = cris_freq_get_cpu_frequency(0);
-
- result = cpufreq_frequency_table_cpuinfo(policy, cris_freq_table);
- if (result)
- return (result);
-
- cpufreq_frequency_table_get_attr(cris_freq_table, policy->cpu);
-
- return 0;
-}
-
-
-static int cris_freq_cpu_exit(struct cpufreq_policy *policy)
-{
- cpufreq_frequency_table_put_attr(policy->cpu);
- return 0;
-}
-
-
-static struct freq_attr *cris_freq_attr[] = {
- &cpufreq_freq_attr_scaling_available_freqs,
- NULL,
-};
-
-static struct cpufreq_driver cris_freq_driver = {
- .get = cris_freq_get_cpu_frequency,
- .verify = cris_freq_verify,
- .target = cris_freq_target,
- .init = cris_freq_cpu_init,
- .exit = cris_freq_cpu_exit,
- .name = "cris_freq",
- .owner = THIS_MODULE,
- .attr = cris_freq_attr,
-};
-
-static int __init cris_freq_init(void)
-{
- int ret;
- ret = cpufreq_register_driver(&cris_freq_driver);
- cpufreq_register_notifier(&cris_sdram_freq_notifier_block,
- CPUFREQ_TRANSITION_NOTIFIER);
- return ret;
-}
-
-static int
-cris_sdram_freq_notifier(struct notifier_block *nb, unsigned long val,
- void *data)
-{
- int i;
- struct cpufreq_freqs *freqs = data;
- if (val == CPUFREQ_PRECHANGE) {
- reg_ddr2_rw_cfg cfg =
- REG_RD(ddr2, regi_ddr2_ctrl, rw_cfg);
- cfg.ref_interval = (freqs->new == 200000 ? 1560 : 46);
-
- if (freqs->new == 200000)
- for (i = 0; i < 50000; i++);
- REG_WR(bif_core, regi_bif_core, rw_sdram_timing, timing);
- }
- return 0;
-}
-
-
-module_init(cris_freq_init);
diff --git a/arch/cris/arch-v32/mach-fs/Makefile b/arch/cris/arch-v32/mach-fs/Makefile
index d366e089198..18a227196a4 100644
--- a/arch/cris/arch-v32/mach-fs/Makefile
+++ b/arch/cris/arch-v32/mach-fs/Makefile
@@ -3,7 +3,6 @@
#
obj-y := dma.o pinmux.o io.o arbiter.o
-obj-$(CONFIG_CPU_FREQ) += cpufreq.o
clean:
diff --git a/arch/cris/arch-v32/mach-fs/cpufreq.c b/arch/cris/arch-v32/mach-fs/cpufreq.c
deleted file mode 100644
index d92cf70d1cb..00000000000
--- a/arch/cris/arch-v32/mach-fs/cpufreq.c
+++ /dev/null
@@ -1,145 +0,0 @@
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/cpufreq.h>
-#include <hwregs/reg_map.h>
-#include <arch/hwregs/reg_rdwr.h>
-#include <arch/hwregs/config_defs.h>
-#include <arch/hwregs/bif_core_defs.h>
-
-static int
-cris_sdram_freq_notifier(struct notifier_block *nb, unsigned long val,
- void *data);
-
-static struct notifier_block cris_sdram_freq_notifier_block = {
- .notifier_call = cris_sdram_freq_notifier
-};
-
-static struct cpufreq_frequency_table cris_freq_table[] = {
- {0x01, 6000},
- {0x02, 200000},
- {0, CPUFREQ_TABLE_END},
-};
-
-static unsigned int cris_freq_get_cpu_frequency(unsigned int cpu)
-{
- reg_config_rw_clk_ctrl clk_ctrl;
- clk_ctrl = REG_RD(config, regi_config, rw_clk_ctrl);
- return clk_ctrl.pll ? 200000 : 6000;
-}
-
-static void cris_freq_set_cpu_state(unsigned int state)
-{
- int i;
- struct cpufreq_freqs freqs;
- reg_config_rw_clk_ctrl clk_ctrl;
- clk_ctrl = REG_RD(config, regi_config, rw_clk_ctrl);
-
- for_each_possible_cpu(i) {
- freqs.old = cris_freq_get_cpu_frequency(i);
- freqs.new = cris_freq_table[state].frequency;
- freqs.cpu = i;
- }
-
- cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
-
- local_irq_disable();
-
- /* Even though we may be SMP they will share the same clock
- * so all settings are made on CPU0. */
- if (cris_freq_table[state].frequency == 200000)
- clk_ctrl.pll = 1;
- else
- clk_ctrl.pll = 0;
- REG_WR(config, regi_config, rw_clk_ctrl, clk_ctrl);
-
- local_irq_enable();
-
- cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
-};
-
-static int cris_freq_verify(struct cpufreq_policy *policy)
-{
- return cpufreq_frequency_table_verify(policy, &cris_freq_table[0]);
-}
-
-static int cris_freq_target(struct cpufreq_policy *policy,
- unsigned int target_freq, unsigned int relation)
-{
- unsigned int newstate = 0;
-
- if (cpufreq_frequency_table_target
- (policy, cris_freq_table, target_freq, relation, &newstate))
- return -EINVAL;
-
- cris_freq_set_cpu_state(newstate);
-
- return 0;
-}
-
-static int cris_freq_cpu_init(struct cpufreq_policy *policy)
-{
- int result;
-
- /* cpuinfo and default policy values */
- policy->cpuinfo.transition_latency = 1000000; /* 1ms */
- policy->cur = cris_freq_get_cpu_frequency(0);
-
- result = cpufreq_frequency_table_cpuinfo(policy, cris_freq_table);
- if (result)
- return (result);
-
- cpufreq_frequency_table_get_attr(cris_freq_table, policy->cpu);
-
- return 0;
-}
-
-static int cris_freq_cpu_exit(struct cpufreq_policy *policy)
-{
- cpufreq_frequency_table_put_attr(policy->cpu);
- return 0;
-}
-
-static struct freq_attr *cris_freq_attr[] = {
- &cpufreq_freq_attr_scaling_available_freqs,
- NULL,
-};
-
-static struct cpufreq_driver cris_freq_driver = {
- .get = cris_freq_get_cpu_frequency,
- .verify = cris_freq_verify,
- .target = cris_freq_target,
- .init = cris_freq_cpu_init,
- .exit = cris_freq_cpu_exit,
- .name = "cris_freq",
- .owner = THIS_MODULE,
- .attr = cris_freq_attr,
-};
-
-static int __init cris_freq_init(void)
-{
- int ret;
- ret = cpufreq_register_driver(&cris_freq_driver);
- cpufreq_register_notifier(&cris_sdram_freq_notifier_block,
- CPUFREQ_TRANSITION_NOTIFIER);
- return ret;
-}
-
-static int
-cris_sdram_freq_notifier(struct notifier_block *nb, unsigned long val,
- void *data)
-{
- int i;
- struct cpufreq_freqs *freqs = data;
- if (val == CPUFREQ_PRECHANGE) {
- reg_bif_core_rw_sdram_timing timing =
- REG_RD(bif_core, regi_bif_core, rw_sdram_timing);
- timing.cpd = (freqs->new == 200000 ? 0 : 1);
-
- if (freqs->new == 200000)
- for (i = 0; i < 50000; i++) ;
- REG_WR(bif_core, regi_bif_core, rw_sdram_timing, timing);
- }
- return 0;
-}
-
-module_init(cris_freq_init);
diff --git a/arch/cris/include/asm/processor.h b/arch/cris/include/asm/processor.h
index 675823f70c0..c0a29b96b92 100644
--- a/arch/cris/include/asm/processor.h
+++ b/arch/cris/include/asm/processor.h
@@ -65,13 +65,6 @@ static inline void release_thread(struct task_struct *dead_task)
#define cpu_relax() barrier()
-/*
- * disable hlt during certain critical i/o operations
- */
-#define HAVE_DISABLE_HLT
-void disable_hlt(void);
-void enable_hlt(void);
-
void default_idle(void);
#endif /* __ASM_CRIS_PROCESSOR_H */
diff --git a/arch/cris/include/asm/unistd.h b/arch/cris/include/asm/unistd.h
index be57a988bfb..0ff3f688984 100644
--- a/arch/cris/include/asm/unistd.h
+++ b/arch/cris/include/asm/unistd.h
@@ -34,12 +34,4 @@
#define __ARCH_WANT_SYS_VFORK
#define __ARCH_WANT_SYS_CLONE
-/*
- * "Conditional" syscalls
- *
- * What we want is __attribute__((weak,alias("sys_ni_syscall"))),
- * but it doesn't work on all toolchains, so we just do it by hand
- */
-#define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall")
-
#endif /* _ASM_CRIS_UNISTD_H_ */
diff --git a/arch/cris/kernel/process.c b/arch/cris/kernel/process.c
index 104ff4dd9b9..b78498eb079 100644
--- a/arch/cris/kernel/process.c
+++ b/arch/cris/kernel/process.c
@@ -29,59 +29,14 @@
//#define DEBUG
-/*
- * The hlt_counter, disable_hlt and enable_hlt is just here as a hook if
- * there would ever be a halt sequence (for power save when idle) with
- * some largish delay when halting or resuming *and* a driver that can't
- * afford that delay. The hlt_counter would then be checked before
- * executing the halt sequence, and the driver marks the unhaltable
- * region by enable_hlt/disable_hlt.
- */
-
-int cris_hlt_counter=0;
-
-void disable_hlt(void)
-{
- cris_hlt_counter++;
-}
-
-EXPORT_SYMBOL(disable_hlt);
-
-void enable_hlt(void)
-{
- cris_hlt_counter--;
-}
-
-EXPORT_SYMBOL(enable_hlt);
-
extern void default_idle(void);
void (*pm_power_off)(void);
EXPORT_SYMBOL(pm_power_off);
-/*
- * The idle thread. There's no useful work to be
- * done, so just try to conserve power and have a
- * low exit latency (ie sit in a loop waiting for
- * somebody to say that they'd like to reschedule)
- */
-
-void cpu_idle (void)
+void arch_cpu_idle(void)
{
- /* endless idle loop with no priority at all */
- while (1) {
- rcu_idle_enter();
- while (!need_resched()) {
- /*
- * Mark this as an RCU critical section so that
- * synchronize_kernel() in the unload path waits
- * for our completion.
- */
- default_idle();
- }
- rcu_idle_exit();
- schedule_preempt_disabled();
- }
+ default_idle();
}
void hard_reset_now (void);
diff --git a/arch/cris/kernel/traps.c b/arch/cris/kernel/traps.c
index a11ad3229f8..0ffda73734f 100644
--- a/arch/cris/kernel/traps.c
+++ b/arch/cris/kernel/traps.c
@@ -147,13 +147,6 @@ show_stack(void)
#endif
void
-dump_stack(void)
-{
- show_stack(NULL, NULL);
-}
-EXPORT_SYMBOL(dump_stack);
-
-void
set_nmi_handler(void (*handler)(struct pt_regs *))
{
nmi_handler = handler;
diff --git a/arch/cris/mm/init.c b/arch/cris/mm/init.c
index d72ab58fd83..9ac80946dad 100644
--- a/arch/cris/mm/init.c
+++ b/arch/cris/mm/init.c
@@ -12,12 +12,10 @@
#include <linux/init.h>
#include <linux/bootmem.h>
#include <asm/tlb.h>
+#include <asm/sections.h>
unsigned long empty_zero_page;
-extern char _stext, _edata, _etext; /* From linkerscript */
-extern char __init_begin, __init_end;
-
void __init
mem_init(void)
{
@@ -67,15 +65,5 @@ mem_init(void)
void
free_initmem(void)
{
- unsigned long addr;
-
- addr = (unsigned long)(&__init_begin);
- for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(addr));
- init_page_count(virt_to_page(addr));
- free_page(addr);
- totalram_pages++;
- }
- printk (KERN_INFO "Freeing unused kernel memory: %luk freed\n",
- (unsigned long)((&__init_end - &__init_begin) >> 10));
+ free_initmem_default(0);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 16:03:18 +0000