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* arm: Turn of d-cache before i-cacheSjoerd Simons2015-09-02-6/+9
| | | | | | | | | | | | | | 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 <sjoerd.simons@collabora.co.uk> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
* arm: Allow cleanup_before_linux() without disabling cachesSimon Glass2015-06-10-18/+29
| | | | | | | | 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 <sjg@chromium.org> Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
* ARM: armv7 fix spelling of SCTRLPeng Fan2015-01-30-1/+1
| | | | | | | SCTLR is the abbreviation of System Control Register, so we should use SCTLR but not SCTRL. Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-24-17/+1
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* arm: bugfix: save_boot_params_default accesses uninitalized stack when -O0Tetsuyuki Kobayashi2012-09-01-7/+0
| | | | | | | | | 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 <koba@kmckk.co.jp> Acked-by: Tom Rini <trini@ti.com>
* armv7: Adding cpu specific cache managmenentMathieu J. Poirier2012-09-01-0/+8
| | | | | | | | Some CPU (i.e u8500) need more cache management before launching the Linux kernel. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: John Rigby <john.rigby@linaro.org>
* Revert "arm: bugfix: save_boot_params_default accesses uninitalized stack ↵Wolfgang Denk2012-07-09-7/+1
| | | | | | | | | | | when -O0" 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 <wd@denx.de>
* arm: bugfix: save_boot_params_default accesses uninitalized stack when -O0Tetsuyuki Kobayashi2012-07-07-1/+7
| | | | | | | | save_boot_params_default() in cpu.c accesses uninitialized stack area when it compiled with -O0 (not optimized). Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp> Acked-by: Tom Rini <trini@ti.com>
* Add cache functions to SPL for armv7Stefano Babic2012-03-27-0/+2
| | | | | | | Signed-off-by: Stefano Babic <sbabic@denx.de> CC: Tom Rini <tom.rini@gmail.com> CC: Wolfgang Denk <wd@denx.de> CC: Simon Schwarz <simonschwarzcor@gmail.com>
* armv7: disable L2 cache in cleanup_before_linux()Aneesh V2011-12-06-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | 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 <albert.u.boot@aribaud.net> Signed-off-by: Aneesh V <aneesh@ti.com>
* omap: add MMC and FAT support to SPLAneesh V2011-08-03-0/+7
| | | | | | | | | | | | | | - Add MMC raw and FAT mode boot support for OMAP - Provide a means by which parameters passed by ROM-code can be saved in u-boot. - Save boot mode related information passed by OMAP4 ROM-code and use it to determine where to load the u-boot from - Assumes that the image has a mkimage header. Gets the payload size and load address from this header. If the header is not detected assume u-boot.bin as payload Signed-off-by: Aneesh V <aneesh@ti.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
* armv7: integrate cache maintenance supportAneesh V2011-07-04-26/+21
| | | | | | | | | | - Enable I-cache on bootup - Enable MMU and D-cache immediately after relocation - Do necessary initialization before enabling d-cache and MMU - Changes to cleanup_before_linux() - Make changes according to the new framework Signed-off-by: Aneesh V <aneesh@ti.com>
* armv7: rename cache related CONFIG flagsAneesh V2011-07-04-3/+0
| | | | | | | | | | | | | | | | Replace the cache related CONFIG flags with more meaningful names. Following are the changes: CONFIG_L2_OFF -> CONFIG_SYS_L2CACHE_OFF CONFIG_SYS_NO_ICACHE -> CONFIG_SYS_ICACHE_OFF CONFIG_SYS_NO_DCACHE -> CONFIG_SYS_DCACHE_OFF Signed-off-by: Aneesh V <aneesh@ti.com> V2: * Changed CONFIG_L2_OFF -> CONFIG_SYS_NO_L2CACHE V4: * Changed all three flags to the final names suggested as above and accordingly changed the commit message
* ARM: Rename arch/arm/cpu/arm_cortexa8 to armv7Steve Sakoman2010-07-05-0/+83
The purpose of this patch is to prepare for adding the OMAP4 architecture, which is Cortex A9 Cortex A8 and A9 both belong to the armv7 architecture, hence the name change. The two architectures are similar enough that substantial code can be shared. Signed-off-by: Aneesh V <aneesh@ti.com> Signed-off-by: Steve Sakoman <steve@sakoman.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
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