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| author | Ahmad Fatoum <ahmad@a3f.at> | 2019-10-09 18:40:08 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-10-14 15:26:46 +0200 |
| commit | 2183ca1c6087882a40834a7f271a2c185dba9de0 (patch) | |
| tree | 22c04e101c6516de03b17a8cf19f80b5535bc2ed /arch/arm/cpu | |
| parent | ae0a375ba71ba9b9a70cb7eda177445fcfbf586d (diff) | |
| download | barebox-2183ca1c6087882a40834a7f271a2c185dba9de0.tar.gz barebox-2183ca1c6087882a40834a7f271a2c185dba9de0.tar.xz | |
ARM: mmu: set R/W bits in ARMv7 translation table
With barebox using the manager permissions for domain 0 that's used for
all page table entries and directories, we never had the need so far to
explicitly set R/W bits. We did so anyway for sections in the early MMU
code, but later on in the normal MMU setup, we didn't do so consistently.
In preparation for switching to DOMAIN_CLIENT for ARMv7, configure R/W
everywhere in normal MMU code as well.
Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/cpu')
| -rw-r--r-- | arch/arm/cpu/mmu.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/arm/cpu/mmu.c b/arch/arm/cpu/mmu.c index f77b824fc5..efe4620d84 100644 --- a/arch/arm/cpu/mmu.c +++ b/arch/arm/cpu/mmu.c @@ -56,13 +56,14 @@ static inline void tlb_invalidate(void) ); } -#define PTE_FLAGS_CACHED_V7 (PTE_EXT_TEX(1) | PTE_BUFFERABLE | PTE_CACHEABLE) -#define PTE_FLAGS_WC_V7 (PTE_EXT_TEX(1) | PTE_EXT_XN) -#define PTE_FLAGS_UNCACHED_V7 PTE_EXT_XN +#define PTE_FLAGS_CACHED_V7 (PTE_EXT_TEX(1) | PTE_BUFFERABLE | PTE_CACHEABLE | \ + PTE_EXT_AP_URW_SRW) +#define PTE_FLAGS_WC_V7 (PTE_EXT_TEX(1) | PTE_EXT_AP_URW_SRW | PTE_EXT_XN) +#define PTE_FLAGS_UNCACHED_V7 (PTE_EXT_AP_URW_SRW | PTE_EXT_XN) #define PTE_FLAGS_CACHED_V4 (PTE_SMALL_AP_UNO_SRW | PTE_BUFFERABLE | PTE_CACHEABLE) #define PTE_FLAGS_UNCACHED_V4 PTE_SMALL_AP_UNO_SRW -#define PGD_FLAGS_WC_V7 (PMD_SECT_TEX(1) | PMD_TYPE_SECT | PMD_SECT_BUFFERABLE | \ - PMD_SECT_XN) +#define PGD_FLAGS_WC_V7 (PMD_SECT_TEX(1) | PMD_SECT_DEF_UNCACHED | \ + PMD_SECT_BUFFERABLE | PMD_SECT_XN) #define PGD_FLAGS_UNCACHED_V7 (PMD_SECT_DEF_UNCACHED | PMD_SECT_XN) /* |