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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-22 11:22:59 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-22 11:22:59 -0700
commit7578634990fb47cc30083fbd812689aa6deacfc0 (patch)
treef493860658579d9572a19b3a41fcea2de035e49f /arch/arm/mm/proc-v7.S
parentd7f5e3df3574c6e38b99f5fe22f15540b2b9811d (diff)
parent5957a4eb284dd6f522b248b674792416466555b2 (diff)
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (60 commits) [ARM] 4524/1: S3C: Move register out of include/asm-arm/arch-s3c2410 [ARM] 4523/1: S3C: Remove FIFO_MAX from uncompression headers [ARM] 4522/1: S3C: split include/asm-arm/arch/memory.h [ARM] 4521/2: S3C: Reorganise VA mapping headers [ARM] 4520/1: S3C: Remove old VA values from static map [ARM] 4519/1: S3C: split S3C2400 values out of S3C24XX map.h [ARM] 4518/1: S3C: Rename watchdog configuration options [ARM] 4517/1: S3C: Fix debug macros for ARM926 output [ARM] 4516/1: S3C: Fix uncompressor serial output for ARM926 [ARM] 4515/1: S3C: Move uncompress code to plat-s3c [ARM] 4514/1: S3C: Rename DEBUG_S3C2410_PORT and DEBUG_S3C_UART [ARM] 4513/1: S3C: Rename CONFIG_S3C2410_LOWLEVEL_UART_PORT [ARM] 4512/1: S3C: rename the debug macros for per-cpu updates [ARM] 4511/1: S3C: updated LLSERIAL Kconfig defines for CPU support [ARM] 4510/1: S3C: split debug-macro support into plat-s3c [ARM] 4509/1: S3C: Create initial arch/arm/plat-s3c [ARM] 4508/1: S3C: Move items to include/asm-arm/plat-s3c [ARM] 4461/1: MXC platform and i.MX31ADS core support [ARM] 4507/1: pxa2xx clock_event_device [ARM] 4497/1: Only allow safe cache configurations on ARMv6 and later ...
Diffstat (limited to 'arch/arm/mm/proc-v7.S')
-rw-r--r--arch/arm/mm/proc-v7.S33
1 files changed, 13 insertions, 20 deletions
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index 718f4782ee8..e0acc5ae6f6 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -77,6 +77,7 @@ ENTRY(cpu_v7_dcache_clean_area)
* - we are not using split page tables
*/
ENTRY(cpu_v7_switch_mm)
+#ifdef CONFIG_MMU
mov r2, #0
ldr r1, [r1, #MM_CONTEXT_ID] @ get mm->context.id
orr r0, r0, #TTB_RGN_OC_WB @ mark PTWs outer cacheable, WB
@@ -86,6 +87,7 @@ ENTRY(cpu_v7_switch_mm)
isb
mcr p15, 0, r1, c13, c0, 1 @ set context ID
isb
+#endif
mov pc, lr
/*
@@ -109,6 +111,7 @@ ENTRY(cpu_v7_switch_mm)
* 1111 0 1 1 r/w r/w
*/
ENTRY(cpu_v7_set_pte_ext)
+#ifdef CONFIG_MMU
str r1, [r0], #-2048 @ linux version
bic r3, r1, #0x000003f0
@@ -136,6 +139,7 @@ ENTRY(cpu_v7_set_pte_ext)
str r3, [r0]
mcr p15, 0, r0, c7, c10, 1 @ flush_pte
+#endif
mov pc, lr
cpu_v7_name:
@@ -169,6 +173,7 @@ __v7_setup:
mcr p15, 0, r10, c7, c5, 0 @ I+BTB cache invalidate
#endif
dsb
+#ifdef CONFIG_MMU
mcr p15, 0, r10, c8, c7, 0 @ invalidate I + D TLBs
mcr p15, 0, r10, c2, c0, 2 @ TTB control register
orr r4, r4, #TTB_RGN_OC_WB @ mark PTWs outer cacheable, WB
@@ -176,21 +181,12 @@ __v7_setup:
mcr p15, 0, r4, c2, c0, 1 @ load TTB1
mov r10, #0x1f @ domains 0, 1 = manager
mcr p15, 0, r10, c3, c0, 0 @ load domain access register
-#ifndef CONFIG_CPU_L2CACHE_DISABLE
- @ L2 cache configuration in the L2 aux control register
- mrc p15, 1, r10, c9, c0, 2
- bic r10, r10, #(1 << 16) @ L2 outer cache
- mcr p15, 1, r10, c9, c0, 2
- @ L2 cache is enabled in the aux control register
- mrc p15, 0, r10, c1, c0, 1
- orr r10, r10, #2
- mcr p15, 0, r10, c1, c0, 1
#endif
- mrc p15, 0, r0, c1, c0, 0 @ read control register
- ldr r10, cr1_clear @ get mask for bits to clear
- bic r0, r0, r10 @ clear bits them
- ldr r10, cr1_set @ get mask for bits to set
- orr r0, r0, r10 @ set them
+ adr r5, v7_crval
+ ldmia r5, {r5, r6}
+ mrc p15, 0, r0, c1, c0, 0 @ read control register
+ bic r0, r0, r5 @ clear bits them
+ orr r0, r0, r6 @ set them
mov pc, lr @ return to head.S:__ret
/*
@@ -199,12 +195,9 @@ __v7_setup:
* rrrr rrrx xxx0 0101 xxxx xxxx x111 xxxx < forced
* 0 110 0011 1.00 .111 1101 < we want
*/
- .type cr1_clear, #object
- .type cr1_set, #object
-cr1_clear:
- .word 0x0120c302
-cr1_set:
- .word 0x00c0387d
+ .type v7_crval, #object
+v7_crval:
+ crval clear=0x0120c302, mmuset=0x00c0387d, ucset=0x00c0187c
__v7_setup_stack:
.space 4 * 11 @ 11 registers