diff options
| -rw-r--r-- | arch/arm/cpu/arm926ejs/start.S | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/arm/cpu/arm926ejs/start.S b/arch/arm/cpu/arm926ejs/start.S index bb4d00b..b39ed8a 100644 --- a/arch/arm/cpu/arm926ejs/start.S +++ b/arch/arm/cpu/arm926ejs/start.S @@ -358,14 +358,18 @@ _dynsym_start_ofs: #ifndef CONFIG_SKIP_LOWLEVEL_INIT cpu_init_crit: /* - * flush v4 I/D caches + * flush D cache before disabling it */ mov r0, #0 - mcr p15, 0, r0, c7, c7, 0 /* flush v3/v4 cache */ - mcr p15, 0, r0, c8, c7, 0 /* flush v4 TLB */ +flush_dcache: + mrc p15, 0, r15, c7, c10, 3 + bne flush_dcache + + mcr p15, 0, r0, c8, c7, 0 /* invalidate TLB */ + mcr p15, 0, r0, c7, c5, 0 /* invalidate I Cache */ /* - * disable MMU stuff and caches + * disable MMU and D cache, and enable I cache */ mrc p15, 0, r0, c1, c0, 0 bic r0, r0, #0x00002300 /* clear bits 13, 9:8 (--V- --RS) */ |