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db910353a1
At present SPL uses a single stack, either CONFIG_SPL_STACK or CONFIG_SYS_INIT_SP_ADDR. Since some SPL features (such as MMC and environment) require a lot of stack, some boards set CONFIG_SPL_STACK to point into SDRAM. They then set up SDRAM very early, before board_init_f(), so that the larger stack can be used. This is an abuse of lowlevel_init(). That function should only be used for essential start-up code which cannot be delayed. An example of a valid use is when only part of the SPL code is visible/executable, and the SoC must be set up so that board_init_f() can be reached. It should not be used for SDRAM init, console init, etc. Add a CONFIG_SPL_STACK_R option, which allows the stack to be moved to a new address before board_init_r() is called in SPL. The expected SPL flow (for CONFIG_SPL_FRAMEWORK) is documented in the README. Signed-off-by: Simon Glass <sjg@chromium.org> For version 1: Acked-by: Albert ARIBAUD <albert.u.boot@aribaud.net> Reviewed-by: Stefan Roese <sr@denx.de> Tested-by: Bo Shen <voice.shen@atmel.com> Acked-by: Bo Shen <voice.shen@atmel.com> Acked-by: Heiko Schocher <hs@denx.de> Tested-by: Heiko Schocher <hs@denx.de> Signed-off-by: Tom Rini <trini@konsulko.com> |
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| .. | ||
| cpu | ||
| dts | ||
| imx-common | ||
| include | ||
| lib | ||
| mach-at91 | ||
| mach-davinci | ||
| mach-highbank | ||
| mach-keystone | ||
| mach-kirkwood | ||
| mach-nomadik | ||
| mach-orion5x | ||
| mach-tegra | ||
| mach-uniphier | ||
| mach-versatile | ||
| mvebu-common | ||
| config.mk | ||
| Kconfig | ||
| Kconfig.debug | ||
| Makefile | ||