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| author | Wojtek Kosior <kwojtus@protonmail.com> | 2020-01-15 15:22:16 +0100 |
|---|---|---|
| committer | Wojtek Kosior <kwojtus@protonmail.com> | 2020-01-15 15:22:16 +0100 |
| commit | c7b47accc6de3521f10c323983a1b325a60fb421 (patch) | |
| tree | f1a4070e1a24568e11c97f368acc2e5b282289d5 /src | |
| parent | f5c270d1b5177a9c0c006356ed2b8b32301d7491 (diff) | |
| download | rpi-MMU-example-c7b47accc6de3521f10c323983a1b325a60fb421.tar.gz rpi-MMU-example-c7b47accc6de3521f10c323983a1b325a60fb421.zip | |
also enable data and instruction cache when enabling the MMU
Diffstat (limited to 'src')
| -rw-r--r-- | src/arm/PL1/kernel/paging.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/arm/PL1/kernel/paging.c b/src/arm/PL1/kernel/paging.c index 771c681..4c3dccf 100644 --- a/src/arm/PL1/kernel/paging.c +++ b/src/arm/PL1/kernel/paging.c @@ -101,10 +101,11 @@ void setup_flat_map(void) // enable MMU puts("enabling the MMU"); - // redundant - we already have SCTLR contents in the variable - // asm("mrc p15, 0, %0, c1, c0, 0" : "=r" (SCTLR.raw)); + // we already have SCTLR contents in the variable - SCTLR.fields.M = 1; + SCTLR.fields.M = 1; // enable MMU + SCTLR.fields.C = 1; // enable data cache + SCTLR.fields.I = 1; // enable instruction cache asm("mcr p15, 0, %0, c1, c0, 0\n\r" "isb" :: "r" (SCTLR.raw) : "memory"); |