u-boot.git/arch/arm/cpu/armv7/cpu.c, branch v2016.01

arm: Turn of d-cache before i-cache

2015-09-03T03:28:25Z

Booting the kernel fails on RK3288 (and probably other rockchip SoCs) when the i-cache is disabled/flushed before d-cache. I have not investigated whether this is due to U-Boot hanging or whether it's very early in the linux boot, but following the approach of the various rockchip U-Boot forks (first disable d-cache then i-cache) makes things work. Signed-off-by: Sjoerd Simons Reviewed-by: Simon Glass Signed-off-by: Simon Glass

arm: Allow cleanup_before_linux() without disabling caches

2015-06-11T01:26:54Z

This function is used before jumping to U-Boot, but in that case we don't always want to disable caches. Signed-off-by: Simon Glass Signed-off-by: Vadim Bendebury

ARM: armv7 fix spelling of SCTRL

2015-01-30T14:19:17Z

SCTLR is the abbreviation of System Control Register, so we should use SCTLR but not SCTRL. Signed-off-by: Peng Fan

Add GPL-2.0+ SPDX-License-Identifier to source files

2013-07-24T13:44:38Z

Signed-off-by: Wolfgang Denk [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini

arm: bugfix: save_boot_params_default accesses uninitalized stack when -O0

2012-09-01T12:58:22Z

save_boot_params_default() in cpu.c accesses uninitialized stack area when it compiled with -O0 (not optimized). This patch removes save_boot_params_default() and put the equivalent in start.S Signed-off-by: Tetsuyuki Kobayashi Acked-by: Tom Rini

armv7: Adding cpu specific cache managmenent

2012-09-01T12:58:20Z

Some CPU (i.e u8500) need more cache management before launching the Linux kernel. Signed-off-by: Mathieu Poirier Signed-off-by: John Rigby

Revert "arm: bugfix: save_boot_params_default accesses uninitalized stack when -O0"

2012-07-09T07:19:00Z

This reverts commit fa042186b932e9b9ee9a2fd8a04a3acf7c70d224. It causes build warnings like this: cpu.c:48:1: warning: -fstack-usage not supported for this target [enabled by default] Signed-off-by: Wolfgang Denk

arm: bugfix: save_boot_params_default accesses uninitalized stack when -O0

2012-07-07T12:07:36Z

save_boot_params_default() in cpu.c accesses uninitialized stack area when it compiled with -O0 (not optimized). Signed-off-by: Tetsuyuki Kobayashi Acked-by: Tom Rini

Add cache functions to SPL for armv7

2012-03-27T20:05:29Z

Signed-off-by: Stefano Babic CC: Tom Rini CC: Wolfgang Denk CC: Simon Schwarz

armv7: disable L2 cache in cleanup_before_linux()

2011-12-06T22:59:33Z

We were not disabling external caches before jumping to kernel. We were flushing all caches including external caches and disabling caches globally in CP15 System Control register. Apparently this is not enough. The bootstrap loader in Linux kernel that does decompression enables data-caches again, flush them after use and disable them before jumping to kernel proper. However, it's not aware of the external caches. Since we have left external cache enabled, external cache will get used once caches are enabled globally, but it's not flushed because decompressor is not aware of external caches. When it jumps to kernel with caches disabled globally, we have stale data in the external cache and a coherency problem. This was breaking the boot for OMAP4 with latest mainline kernel. The solution is to disable external caches in cleanup_before_linux(). With this fix kernel is booting again. Cc: Albert Aribaud Signed-off-by: Aneesh V