diff options
| author | David Hendricks <dhendrix@chromium.org> | 2013-03-29 13:24:29 -0700 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2013-11-25 23:01:03 +0100 |
| commit | 6119bea233a29d806ae77b44177feeba7010bfdd (patch) | |
| tree | 2a7365683268f29c1ff817b6fadbc35c4c87fb0e /payloads/libpayload/arch/armv7 | |
| parent | 7905f9254ebc865cbd78e4ade3e5d795957be4a6 (diff) | |
| download | coreboot-6119bea233a29d806ae77b44177feeba7010bfdd.tar.xz | |
armv7: import updated cache/MMU stuff from coreboot
This imports the cache/MMU code from coreboot as of 1877cee.
Change-Id: I97ec8b9640921a94a4b27d89e4ae6185e9f96f18
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/48288
Commit-Queue: Stefan Reinauer <reinauer@google.com>
Tested-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/4134
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'payloads/libpayload/arch/armv7')
| -rw-r--r-- | payloads/libpayload/arch/armv7/cache.c | 43 |
1 files changed, 32 insertions, 11 deletions
diff --git a/payloads/libpayload/arch/armv7/cache.c b/payloads/libpayload/arch/armv7/cache.c index 9fac442f17..04eaa88c7c 100644 --- a/payloads/libpayload/arch/armv7/cache.c +++ b/payloads/libpayload/arch/armv7/cache.c @@ -31,7 +31,7 @@ * Reference: ARM Architecture Reference Manual, ARMv7-A and ARMv7-R edition */ -#include <inttypes.h> +#include <stdint.h> #include <arch/cache.h> @@ -149,14 +149,39 @@ static void dcache_op_set_way(enum dcache_op op) isb(); } +static void dcache_foreach(enum dcache_op op) +{ + uint32_t clidr; + int level; + + clidr = read_clidr(); + for (level = 0; level < 7; level++) { + unsigned int ctype = (clidr >> (level * 3)) & 0x7; + uint32_t csselr; + + switch(ctype) { + case 0x2: + case 0x3: + case 0x4: + csselr = level << 1; + write_csselr(csselr); + dcache_op_set_way(op); + break; + default: + /* no cache, icache only, or reserved */ + break; + } + } +} + void dcache_clean_invalidate_all(void) { - dcache_op_set_way(OP_DCCISW); + dcache_foreach(OP_DCCISW); } void dcache_invalidate_all(void) { - dcache_op_set_way(OP_DCISW); + dcache_foreach(OP_DCISW); } static unsigned int line_bytes(void) @@ -212,15 +237,9 @@ void dcache_clean_invalidate_by_mva(unsigned long addr, unsigned long len) void dcache_mmu_disable(void) { - uint32_t sctlr, csselr; - - /* ensure L1 data/unified cache is selected */ - csselr = read_csselr(); - csselr &= ~0xf; - write_csselr(csselr); + uint32_t sctlr; dcache_clean_invalidate_all(); - sctlr = read_sctlr(); sctlr &= ~(SCTLR_C | SCTLR_M); write_sctlr(sctlr); @@ -264,6 +283,8 @@ void armv7_invalidate_caches(void) case 0x2: case 0x4: /* dcache only or unified cache */ + csselr = level << 1; + write_csselr(csselr); dcache_invalidate_all(); break; case 0x3: @@ -272,7 +293,7 @@ void armv7_invalidate_caches(void) write_csselr(csselr); icache_invalidate_all(); - csselr = level < 1; + csselr = level << 1; write_csselr(csselr); dcache_invalidate_all(); break; |