diff options
author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-26 15:22:12 +0400 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-27 13:48:42 +0400 |
commit | 9ca03a21e320a6bf44559323527aba704bcc8772 (patch) | |
tree | c3422c49decfdca220c0088938546c49ee71ba64 /arch/arm | |
parent | b8ab5397bcbd92e3fd4a9770e0bf59315fa38dab (diff) | |
download | linux-9ca03a21e320a6bf44559323527aba704bcc8772.tar.xz |
ARM: Factor out common code from cpu_proc_fin()
All implementations of cpu_proc_fin() start by disabling interrupts
and then flush caches. Rather than have every processors proc_fin()
implementation do this, move it out into generic code - and move the
cache flush past setup_mm_for_reboot() (so it can benefit from having
caches still enabled.)
This allows cpu_proc_fin() to become independent of the L1/L2 cache
types, and eventually move the L2 cache flushing into the L2 support
code.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
-rw-r--r-- | arch/arm/kernel/machine_kexec.c | 6 | ||||
-rw-r--r-- | arch/arm/kernel/process.c | 17 | ||||
-rw-r--r-- | arch/arm/mm/proc-arm1020.S | 6 | ||||
-rw-r--r-- | arch/arm/mm/proc-arm1020e.S | 6 | ||||
-rw-r--r-- | arch/arm/mm/proc-arm1022.S | 6 | ||||
-rw-r--r-- | arch/arm/mm/proc-arm1026.S | 6 | ||||
-rw-r--r-- | arch/arm/mm/proc-arm6_7.S | 2 | ||||
-rw-r--r-- | arch/arm/mm/proc-arm720.S | 6 | ||||
-rw-r--r-- | arch/arm/mm/proc-arm740.S | 6 | ||||
-rw-r--r-- | arch/arm/mm/proc-arm7tdmi.S | 2 | ||||
-rw-r--r-- | arch/arm/mm/proc-arm920.S | 10 | ||||
-rw-r--r-- | arch/arm/mm/proc-arm922.S | 10 | ||||
-rw-r--r-- | arch/arm/mm/proc-arm925.S | 6 | ||||
-rw-r--r-- | arch/arm/mm/proc-arm926.S | 6 | ||||
-rw-r--r-- | arch/arm/mm/proc-arm940.S | 6 | ||||
-rw-r--r-- | arch/arm/mm/proc-arm946.S | 6 | ||||
-rw-r--r-- | arch/arm/mm/proc-arm9tdmi.S | 2 | ||||
-rw-r--r-- | arch/arm/mm/proc-fa526.S | 6 | ||||
-rw-r--r-- | arch/arm/mm/proc-feroceon.S | 7 | ||||
-rw-r--r-- | arch/arm/mm/proc-mohawk.S | 6 | ||||
-rw-r--r-- | arch/arm/mm/proc-sa110.S | 8 | ||||
-rw-r--r-- | arch/arm/mm/proc-sa1100.S | 6 | ||||
-rw-r--r-- | arch/arm/mm/proc-v6.S | 5 | ||||
-rw-r--r-- | arch/arm/mm/proc-v7.S | 5 | ||||
-rw-r--r-- | arch/arm/mm/proc-xsc3.S | 6 | ||||
-rw-r--r-- | arch/arm/mm/proc-xscale.S | 6 |
26 files changed, 40 insertions, 124 deletions
diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c index 598ca61e7bca..3b4872c2da8e 100644 --- a/arch/arm/kernel/machine_kexec.c +++ b/arch/arm/kernel/machine_kexec.c @@ -74,7 +74,11 @@ void machine_kexec(struct kimage *image) (unsigned long) reboot_code_buffer + KEXEC_CONTROL_PAGE_SIZE); printk(KERN_INFO "Bye!\n"); - cpu_proc_fin(); + local_irq_disable(); + local_fiq_disable(); setup_mm_for_reboot(0); /* mode is not used, so just pass 0*/ + flush_cache_all(); + cpu_proc_fin(); + flush_cache_all(); cpu_reset(reboot_code_buffer_phys); } diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index a4a9cc88bec7..aaf51159203a 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -29,6 +29,7 @@ #include <linux/utsname.h> #include <linux/uaccess.h> +#include <asm/cacheflush.h> #include <asm/leds.h> #include <asm/processor.h> #include <asm/system.h> @@ -84,10 +85,9 @@ __setup("hlt", hlt_setup); void arm_machine_restart(char mode, const char *cmd) { - /* - * Clean and disable cache, and turn off interrupts - */ - cpu_proc_fin(); + /* Disable interrupts first */ + local_irq_disable(); + local_fiq_disable(); /* * Tell the mm system that we are going to reboot - @@ -96,6 +96,15 @@ void arm_machine_restart(char mode, const char *cmd) */ setup_mm_for_reboot(mode); + /* Clean and invalidate caches */ + flush_cache_all(); + + /* Turn off caching */ + cpu_proc_fin(); + + /* Push out any further dirty data, and ensure cache is empty */ + flush_cache_all(); + /* * Now call the architecture specific reboot code. */ diff --git a/arch/arm/mm/proc-arm1020.S b/arch/arm/mm/proc-arm1020.S index 72507c630ceb..203a4e944d9e 100644 --- a/arch/arm/mm/proc-arm1020.S +++ b/arch/arm/mm/proc-arm1020.S @@ -79,15 +79,11 @@ ENTRY(cpu_arm1020_proc_init) * cpu_arm1020_proc_fin() */ ENTRY(cpu_arm1020_proc_fin) - stmfd sp!, {lr} - mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, ip - bl arm1020_flush_kern_cache_all mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldmfd sp!, {pc} + mov pc, lr /* * cpu_arm1020_reset(loc) diff --git a/arch/arm/mm/proc-arm1020e.S b/arch/arm/mm/proc-arm1020e.S index d27829805609..1a511e765909 100644 --- a/arch/arm/mm/proc-arm1020e.S +++ b/arch/arm/mm/proc-arm1020e.S @@ -79,15 +79,11 @@ ENTRY(cpu_arm1020e_proc_init) * cpu_arm1020e_proc_fin() */ ENTRY(cpu_arm1020e_proc_fin) - stmfd sp!, {lr} - mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, ip - bl arm1020e_flush_kern_cache_all mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldmfd sp!, {pc} + mov pc, lr /* * cpu_arm1020e_reset(loc) diff --git a/arch/arm/mm/proc-arm1022.S b/arch/arm/mm/proc-arm1022.S index ce13e4a827de..1ffa4eb9c34f 100644 --- a/arch/arm/mm/proc-arm1022.S +++ b/arch/arm/mm/proc-arm1022.S @@ -68,15 +68,11 @@ ENTRY(cpu_arm1022_proc_init) * cpu_arm1022_proc_fin() */ ENTRY(cpu_arm1022_proc_fin) - stmfd sp!, {lr} - mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, ip - bl arm1022_flush_kern_cache_all mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldmfd sp!, {pc} + mov pc, lr /* * cpu_arm1022_reset(loc) diff --git a/arch/arm/mm/proc-arm1026.S b/arch/arm/mm/proc-arm1026.S index 636672a29c6d..5697c34b95b0 100644 --- a/arch/arm/mm/proc-arm1026.S +++ b/arch/arm/mm/proc-arm1026.S @@ -68,15 +68,11 @@ ENTRY(cpu_arm1026_proc_init) * cpu_arm1026_proc_fin() */ ENTRY(cpu_arm1026_proc_fin) - stmfd sp!, {lr} - mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, ip - bl arm1026_flush_kern_cache_all mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldmfd sp!, {pc} + mov pc, lr /* * cpu_arm1026_reset(loc) diff --git a/arch/arm/mm/proc-arm6_7.S b/arch/arm/mm/proc-arm6_7.S index 795dc615f43b..64e0b327c7c5 100644 --- a/arch/arm/mm/proc-arm6_7.S +++ b/arch/arm/mm/proc-arm6_7.S @@ -184,8 +184,6 @@ ENTRY(cpu_arm7_proc_init) ENTRY(cpu_arm6_proc_fin) ENTRY(cpu_arm7_proc_fin) - mov r0, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, r0 mov r0, #0x31 @ ....S..DP...M mcr p15, 0, r0, c1, c0, 0 @ disable caches mov pc, lr diff --git a/arch/arm/mm/proc-arm720.S b/arch/arm/mm/proc-arm720.S index 0b62de244666..9d96824134fc 100644 --- a/arch/arm/mm/proc-arm720.S +++ b/arch/arm/mm/proc-arm720.S @@ -54,15 +54,11 @@ ENTRY(cpu_arm720_proc_init) mov pc, lr ENTRY(cpu_arm720_proc_fin) - stmfd sp!, {lr} - mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, ip mrc p15, 0, r0, c1, c0, 0 bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches - mcr p15, 0, r1, c7, c7, 0 @ invalidate cache - ldmfd sp!, {pc} + mov pc, lr /* * Function: arm720_proc_do_idle(void) diff --git a/arch/arm/mm/proc-arm740.S b/arch/arm/mm/proc-arm740.S index 01860cdeb2ec..6c1a9ab059ae 100644 --- a/arch/arm/mm/proc-arm740.S +++ b/arch/arm/mm/proc-arm740.S @@ -36,15 +36,11 @@ ENTRY(cpu_arm740_switch_mm) * cpu_arm740_proc_fin() */ ENTRY(cpu_arm740_proc_fin) - stmfd sp!, {lr} - mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, ip mrc p15, 0, r0, c1, c0, 0 bic r0, r0, #0x3f000000 @ bank/f/lock/s bic r0, r0, #0x0000000c @ w-buffer/cache mcr p15, 0, r0, c1, c0, 0 @ disable caches - mcr p15, 0, r0, c7, c0, 0 @ invalidate cache - ldmfd sp!, {pc} + mov pc, lr /* * cpu_arm740_reset(loc) diff --git a/arch/arm/mm/proc-arm7tdmi.S b/arch/arm/mm/proc-arm7tdmi.S index 1201b9863829..6a850dbba22e 100644 --- a/arch/arm/mm/proc-arm7tdmi.S +++ b/arch/arm/mm/proc-arm7tdmi.S @@ -36,8 +36,6 @@ ENTRY(cpu_arm7tdmi_switch_mm) * cpu_arm7tdmi_proc_fin() */ ENTRY(cpu_arm7tdmi_proc_fin) - mov r0, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, r0 mov pc, lr /* diff --git a/arch/arm/mm/proc-arm920.S b/arch/arm/mm/proc-arm920.S index 8be81992645d..86f80aa56216 100644 --- a/arch/arm/mm/proc-arm920.S +++ b/arch/arm/mm/proc-arm920.S @@ -69,19 +69,11 @@ ENTRY(cpu_arm920_proc_init) * cpu_arm920_proc_fin() */ ENTRY(cpu_arm920_proc_fin) - stmfd sp!, {lr} - mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, ip -#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH - bl arm920_flush_kern_cache_all -#else - bl v4wt_flush_kern_cache_all -#endif mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldmfd sp!, {pc} + mov pc, lr /* * cpu_arm920_reset(loc) diff --git a/arch/arm/mm/proc-arm922.S b/arch/arm/mm/proc-arm922.S index c0ff8e4b1074..f76ce9b62883 100644 --- a/arch/arm/mm/proc-arm922.S +++ b/arch/arm/mm/proc-arm922.S @@ -71,19 +71,11 @@ ENTRY(cpu_arm922_proc_init) * cpu_arm922_proc_fin() */ ENTRY(cpu_arm922_proc_fin) - stmfd sp!, {lr} - mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, ip -#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH - bl arm922_flush_kern_cache_all -#else - bl v4wt_flush_kern_cache_all -#endif mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldmfd sp!, {pc} + mov pc, lr /* * cpu_arm922_reset(loc) diff --git a/arch/arm/mm/proc-arm925.S b/arch/arm/mm/proc-arm925.S index 3c6cffe400f6..657bd3f7c153 100644 --- a/arch/arm/mm/proc-arm925.S +++ b/arch/arm/mm/proc-arm925.S @@ -92,15 +92,11 @@ ENTRY(cpu_arm925_proc_init) * cpu_arm925_proc_fin() */ ENTRY(cpu_arm925_proc_fin) - stmfd sp!, {lr} - mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, ip - bl arm925_flush_kern_cache_all mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldmfd sp!, {pc} + mov pc, lr /* * cpu_arm925_reset(loc) diff --git a/arch/arm/mm/proc-arm926.S b/arch/arm/mm/proc-arm926.S index 75b707c9cce1..73f1f3c68910 100644 --- a/arch/arm/mm/proc-arm926.S +++ b/arch/arm/mm/proc-arm926.S @@ -61,15 +61,11 @@ ENTRY(cpu_arm926_proc_init) * cpu_arm926_proc_fin() */ ENTRY(cpu_arm926_proc_fin) - stmfd sp!, {lr} - mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, ip - bl arm926_flush_kern_cache_all mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldmfd sp!, {pc} + mov pc, lr /* * cpu_arm926_reset(loc) diff --git a/arch/arm/mm/proc-arm940.S b/arch/arm/mm/proc-arm940.S index 1af1657819eb..fffb061a45a5 100644 --- a/arch/arm/mm/proc-arm940.S +++ b/arch/arm/mm/proc-arm940.S @@ -37,15 +37,11 @@ ENTRY(cpu_arm940_switch_mm) * cpu_arm940_proc_fin() */ ENTRY(cpu_arm940_proc_fin) - stmfd sp!, {lr} - mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, ip - bl arm940_flush_kern_cache_all mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x00001000 @ i-cache bic r0, r0, #0x00000004 @ d-cache mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldmfd sp!, {pc} + mov pc, lr /* * cpu_arm940_reset(loc) diff --git a/arch/arm/mm/proc-arm946.S b/arch/arm/mm/proc-arm946.S index 1664b6aaff79..249a6053760a 100644 --- a/arch/arm/mm/proc-arm946.S +++ b/arch/arm/mm/proc-arm946.S @@ -44,15 +44,11 @@ ENTRY(cpu_arm946_switch_mm) * cpu_arm946_proc_fin() */ ENTRY(cpu_arm946_proc_fin) - stmfd sp!, {lr} - mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, ip - bl arm946_flush_kern_cache_all mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x00001000 @ i-cache bic r0, r0, #0x00000004 @ d-cache mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldmfd sp!, {pc} + mov pc, lr /* * cpu_arm946_reset(loc) diff --git a/arch/arm/mm/proc-arm9tdmi.S b/arch/arm/mm/proc-arm9tdmi.S index 28545c29dbcd..db475667fac2 100644 --- a/arch/arm/mm/proc-arm9tdmi.S +++ b/arch/arm/mm/proc-arm9tdmi.S @@ -36,8 +36,6 @@ ENTRY(cpu_arm9tdmi_switch_mm) * cpu_arm9tdmi_proc_fin() */ ENTRY(cpu_arm9tdmi_proc_fin) - mov r0, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, r0 mov pc, lr /* diff --git a/arch/arm/mm/proc-fa526.S b/arch/arm/mm/proc-fa526.S index 08f5ac237ad4..7803fdf70029 100644 --- a/arch/arm/mm/proc-fa526.S +++ b/arch/arm/mm/proc-fa526.S @@ -39,17 +39,13 @@ ENTRY(cpu_fa526_proc_init) * cpu_fa526_proc_fin() */ ENTRY(cpu_fa526_proc_fin) - stmfd sp!, {lr} - mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, ip - bl fa_flush_kern_cache_all mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches nop nop - ldmfd sp!, {pc} + mov pc, lr /* * cpu_fa526_reset(loc) diff --git a/arch/arm/mm/proc-feroceon.S b/arch/arm/mm/proc-feroceon.S index 53e632343849..b304d0104a4e 100644 --- a/arch/arm/mm/proc-feroceon.S +++ b/arch/arm/mm/proc-feroceon.S @@ -75,11 +75,6 @@ ENTRY(cpu_feroceon_proc_init) * cpu_feroceon_proc_fin() */ ENTRY(cpu_feroceon_proc_fin) - stmfd sp!, {lr} - mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, ip - bl feroceon_flush_kern_cache_all - #if defined(CONFIG_CACHE_FEROCEON_L2) && \ !defined(CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH) mov r0, #0 @@ -91,7 +86,7 @@ ENTRY(cpu_feroceon_proc_fin) bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldmfd sp!, {pc} + mov pc, lr /* * cpu_feroceon_reset(loc) diff --git a/arch/arm/mm/proc-mohawk.S b/arch/arm/mm/proc-mohawk.S index caa31154e7db..5f6892fcc167 100644 --- a/arch/arm/mm/proc-mohawk.S +++ b/arch/arm/mm/proc-mohawk.S @@ -51,15 +51,11 @@ ENTRY(cpu_mohawk_proc_init) * cpu_mohawk_proc_fin() */ ENTRY(cpu_mohawk_proc_fin) - stmfd sp!, {lr} - mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, ip - bl mohawk_flush_kern_cache_all mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1800 @ ...iz........... bic r0, r0, #0x0006 @ .............ca. mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldmfd sp!, {pc} + mov pc, lr /* * cpu_mohawk_reset(loc) diff --git a/arch/arm/mm/proc-sa110.S b/arch/arm/mm/proc-sa110.S index 7b706b389906..a201eb04b5e1 100644 --- a/arch/arm/mm/proc-sa110.S +++ b/arch/arm/mm/proc-sa110.S @@ -44,17 +44,13 @@ ENTRY(cpu_sa110_proc_init) * cpu_sa110_proc_fin() */ ENTRY(cpu_sa110_proc_fin) - stmfd sp!, {lr} - mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, ip - bl v4wb_flush_kern_cache_all @ clean caches -1: mov r0, #0 + mov r0, #0 mcr p15, 0, r0, c15, c2, 2 @ Disable clock switching mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldmfd sp!, {pc} + mov pc, lr /* * cpu_sa110_reset(loc) diff --git a/arch/arm/mm/proc-sa1100.S b/arch/arm/mm/proc-sa1100.S index 5c47760c2064..7ddc4805bf97 100644 --- a/arch/arm/mm/proc-sa1100.S +++ b/arch/arm/mm/proc-sa1100.S @@ -55,16 +55,12 @@ ENTRY(cpu_sa1100_proc_init) * - Clean and turn off caches. */ ENTRY(cpu_sa1100_proc_fin) - stmfd sp!, {lr} - mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, ip - bl v4wb_flush_kern_cache_all mcr p15, 0, ip, c15, c2, 2 @ Disable clock switching mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldmfd sp!, {pc} + mov pc, lr /* * cpu_sa1100_reset(loc) diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S index 2f5a3c23a0fe..22aac8515196 100644 --- a/arch/arm/mm/proc-v6.S +++ b/arch/arm/mm/proc-v6.S @@ -42,14 +42,11 @@ ENTRY(cpu_v6_proc_init) mov pc, lr ENTRY(cpu_v6_proc_fin) - stmfd sp!, {lr} - cpsid if @ disable interrupts - bl v6_flush_kern_cache_all mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x0006 @ .............ca. mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldmfd sp!, {pc} + mov pc, lr /* * cpu_v6_reset(loc) diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index 8071bcd4c995..6a8506d99ee9 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -45,14 +45,11 @@ ENTRY(cpu_v7_proc_init) ENDPROC(cpu_v7_proc_init) ENTRY(cpu_v7_proc_fin) - stmfd sp!, {lr} - cpsid if @ disable interrupts - bl v7_flush_kern_cache_all mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x0006 @ .............ca. mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldmfd sp!, {pc} + mov pc, lr ENDPROC(cpu_v7_proc_fin) /* diff --git a/arch/arm/mm/proc-xsc3.S b/arch/arm/mm/proc-xsc3.S index e5797f1c1db7..361a51e49030 100644 --- a/arch/arm/mm/proc-xsc3.S +++ b/arch/arm/mm/proc-xsc3.S @@ -90,15 +90,11 @@ ENTRY(cpu_xsc3_proc_init) * cpu_xsc3_proc_fin() */ ENTRY(cpu_xsc3_proc_fin) - str lr, [sp, #-4]! - mov r0, #PSR_F_BIT|PSR_I_BIT|SVC_MODE - msr cpsr_c, r0 - bl xsc3_flush_kern_cache_all @ clean caches mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1800 @ ...IZ........... bic r0, r0, #0x0006 @ .............CA. mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldr pc, [sp], #4 + mov pc, lr /* * cpu_xsc3_reset(loc) diff --git a/arch/arm/mm/proc-xscale.S b/arch/arm/mm/proc-xscale.S index 63037e2162f2..14075979bcba 100644 --- a/arch/arm/mm/proc-xscale.S +++ b/arch/arm/mm/proc-xscale.S @@ -124,15 +124,11 @@ ENTRY(cpu_xscale_proc_init) * cpu_xscale_proc_fin() */ ENTRY(cpu_xscale_proc_fin) - str lr, [sp, #-4]! - mov r0, #PSR_F_BIT|PSR_I_BIT|SVC_MODE - msr cpsr_c, r0 - bl xscale_flush_kern_cache_all @ clean caches mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1800 @ ...IZ........... bic r0, r0, #0x0006 @ .............CA. mcr p15, 0, r0, c1, c0, 0 @ disable caches - ldr pc, [sp], #4 + mov pc, lr /* * cpu_xscale_reset(loc) |