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| author | Catalin Marinas <catalin.marinas@arm.com> | 2007-07-20 10:43:02 (GMT) |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-07-20 20:42:13 (GMT) |
| commit | 2eb8c82bc492d5f185150e63eba5eac4dff24178 (patch) | |
| tree | cfed0c4e370475ec92e0966ec28f9681986f01f0 /arch/arm | |
| parent | 7092fc38ee770251aed361572bf6bed05fcf3ee2 (diff) | |
| download | linux-2eb8c82bc492d5f185150e63eba5eac4dff24178.tar.xz | |
[ARM] 4503/1: nommu: Add noMMU support for ARMv7
This patch adds the necessary ifdef's to the proc-v7.S code and
defines the v7wbi_tlb_fns macro in pgtable-nommu.h
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mm/Kconfig | 2 | ||||
| -rw-r--r-- | arch/arm/mm/proc-v7.S | 25 |
2 files changed, 15 insertions, 12 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index 7cc32b7..58109ae 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -377,7 +377,7 @@ config CPU_V7 select CPU_CACHE_V7 select CPU_CACHE_VIPT select CPU_CP15_MMU - select CPU_HAS_ASID + select CPU_HAS_ASID if MMU select CPU_COPY_V6 if MMU select CPU_TLB_V7 if MMU diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index 07b0269..e0acc5a 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 @@ -176,11 +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 - 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 +#endif + 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 /* @@ -189,12 +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 |