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| author | Mike Dunn <mikedunn@newsguy.com> | 2013-06-17 10:47:28 -0700 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2013-06-22 15:25:28 +0200 |
| commit | 097d86d098ce9c5c59501b4bffd2a3d3324166ef (patch) | |
| tree | 250fb2c64c27a67d978a3e6ad63c941b67f4b7be /arch/arm/cpu/pxa/start.S | |
| parent | 3497d43215b6919e680fefe59b38b71516adf2a0 (diff) | |
| download | u-boot-imx-097d86d098ce9c5c59501b4bffd2a3d3324166ef.zip u-boot-imx-097d86d098ce9c5c59501b4bffd2a3d3324166ef.tar.gz u-boot-imx-097d86d098ce9c5c59501b4bffd2a3d3324166ef.tar.bz2 | |
pxa: turn icache off in cpu_init_crit()
The comment in the low-level initialization function cpu_init_crit() says that
the caches are being disabled, but (oddly) the icache is actually turned on.
This is probably not a good idea prior to relocating code, so this patch turns
it off. Tested on the pxa270.
Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
Diffstat (limited to 'arch/arm/cpu/pxa/start.S')
| -rw-r--r-- | arch/arm/cpu/pxa/start.S | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/arm/cpu/pxa/start.S b/arch/arm/cpu/pxa/start.S index 2e3f65e..2e623b1 100644 --- a/arch/arm/cpu/pxa/start.S +++ b/arch/arm/cpu/pxa/start.S @@ -208,10 +208,9 @@ cpu_init_crit: * disable MMU stuff and caches */ mrc p15, 0, r0, c1, c0, 0 - bic r0, r0, #0x00002300 @ clear bits 13, 9:8 (--V- --RS) + bic r0, r0, #0x00003300 @ clear bits 13:12, 9:8 (--VI --RS) bic r0, r0, #0x00000087 @ clear bits 7, 2:0 (B--- -CAM) orr r0, r0, #0x00000002 @ set bit 2 (A) Align - orr r0, r0, #0x00001000 @ set bit 12 (I) I-Cache mcr p15, 0, r0, c1, c0, 0 mov pc, lr /* back to my caller */ |