diff options
Diffstat (limited to 'arch/arm/mm/proc-v7.S')
| -rw-r--r-- | arch/arm/mm/proc-v7.S | 57 |
1 files changed, 41 insertions, 16 deletions
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index 7563ff0141b..53cbe222515 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -30,15 +30,13 @@ #define TTB_IRGN_WT ((1 << 0) | (0 << 6)) #define TTB_IRGN_WB ((1 << 0) | (1 << 6)) -#ifndef CONFIG_SMP /* PTWs cacheable, inner WB not shareable, outer WB not shareable */ -#define TTB_FLAGS TTB_IRGN_WB|TTB_RGN_OC_WB -#define PMD_FLAGS PMD_SECT_WB -#else +#define TTB_FLAGS_UP TTB_IRGN_WB|TTB_RGN_OC_WB +#define PMD_FLAGS_UP PMD_SECT_WB + /* PTWs cacheable, inner WBWA shareable, outer WBWA not shareable */ -#define TTB_FLAGS TTB_IRGN_WBWA|TTB_S|TTB_NOS|TTB_RGN_OC_WBWA -#define PMD_FLAGS PMD_SECT_WBWA|PMD_SECT_S -#endif +#define TTB_FLAGS_SMP TTB_IRGN_WBWA|TTB_S|TTB_NOS|TTB_RGN_OC_WBWA +#define PMD_FLAGS_SMP PMD_SECT_WBWA|PMD_SECT_S ENTRY(cpu_v7_proc_init) mov pc, lr @@ -105,7 +103,8 @@ 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_FLAGS + ALT_SMP(orr r0, r0, #TTB_FLAGS_SMP) + ALT_UP(orr r0, r0, #TTB_FLAGS_UP) #ifdef CONFIG_ARM_ERRATA_430973 mcr p15, 0, r2, c7, c5, 6 @ flush BTAC/BTB #endif @@ -169,7 +168,7 @@ cpu_v7_name: .ascii "ARMv7 Processor" .align - __INIT + __CPUINIT /* * __v7_setup @@ -188,7 +187,8 @@ cpu_v7_name: */ __v7_ca9mp_setup: #ifdef CONFIG_SMP - mrc p15, 0, r0, c1, c0, 1 + ALT_SMP(mrc p15, 0, r0, c1, c0, 1) + ALT_UP(mov r0, #(1 << 6)) @ fake it for UP tst r0, #(1 << 6) @ SMP/nAMP mode enabled? orreq r0, r0, #(1 << 6) | (1 << 0) @ Enable SMP/nAMP mode and mcreq p15, 0, r0, c1, c0, 1 @ TLB ops broadcasting @@ -253,6 +253,14 @@ __v7_setup: orreq r10, r10, #1 << 22 @ set bit #22 mcreq p15, 0, r10, c15, c0, 1 @ write diagnostic register #endif +#ifdef CONFIG_ARM_ERRATA_743622 + teq r6, #0x20 @ present in r2p0 + teqne r6, #0x21 @ present in r2p1 + teqne r6, #0x22 @ present in r2p2 + mrceq p15, 0, r10, c15, c0, 1 @ read diagnostic register + orreq r10, r10, #1 << 6 @ set bit #6 + mcreq p15, 0, r10, c15, c0, 1 @ write diagnostic register +#endif 3: mov r10, #0 #ifdef HARVARD_CACHE @@ -262,7 +270,8 @@ __v7_setup: #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_FLAGS + ALT_SMP(orr r4, r4, #TTB_FLAGS_SMP) + ALT_UP(orr r4, r4, #TTB_FLAGS_UP) 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 @@ -324,6 +333,8 @@ v7_crval: __v7_setup_stack: .space 4 * 11 @ 11 registers + __INITDATA + .type v7_processor_functions, #object ENTRY(v7_processor_functions) .word v7_early_abort @@ -337,6 +348,8 @@ ENTRY(v7_processor_functions) .word cpu_v7_set_pte_ext .size v7_processor_functions, . - v7_processor_functions + .section ".rodata" + .type cpu_arch_name, #object cpu_arch_name: .asciz "armv7" @@ -354,10 +367,16 @@ cpu_elf_name: __v7_ca9mp_proc_info: .long 0x410fc090 @ Required ID value .long 0xff0ffff0 @ Mask for ID - .long PMD_TYPE_SECT | \ + ALT_SMP(.long \ + PMD_TYPE_SECT | \ + PMD_SECT_AP_WRITE | \ + PMD_SECT_AP_READ | \ + PMD_FLAGS_SMP) + ALT_UP(.long \ + PMD_TYPE_SECT | \ PMD_SECT_AP_WRITE | \ PMD_SECT_AP_READ | \ - PMD_FLAGS + PMD_FLAGS_UP) .long PMD_TYPE_SECT | \ PMD_SECT_XN | \ PMD_SECT_AP_WRITE | \ @@ -365,7 +384,7 @@ __v7_ca9mp_proc_info: b __v7_ca9mp_setup .long cpu_arch_name .long cpu_elf_name - .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP + .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP|HWCAP_TLS .long cpu_v7_name .long v7_processor_functions .long v7wbi_tlb_fns @@ -380,10 +399,16 @@ __v7_ca9mp_proc_info: __v7_proc_info: .long 0x000f0000 @ Required ID value .long 0x000f0000 @ Mask for ID - .long PMD_TYPE_SECT | \ + ALT_SMP(.long \ + PMD_TYPE_SECT | \ + PMD_SECT_AP_WRITE | \ + PMD_SECT_AP_READ | \ + PMD_FLAGS_SMP) + ALT_UP(.long \ + PMD_TYPE_SECT | \ PMD_SECT_AP_WRITE | \ PMD_SECT_AP_READ | \ - PMD_FLAGS + PMD_FLAGS_UP) .long PMD_TYPE_SECT | \ PMD_SECT_XN | \ PMD_SECT_AP_WRITE | \ |