Provide a means by which u-boot/SPL can save parameters passed to it by ROM code or the pre-loader.
A new function 'save_boot_params' has been defined and a default implentation provided. Please note that we do not have a stack yet. So, any implementation of this function should not use stack.
Signed-off-by: Aneesh V aneesh@ti.com --- arch/arm/cpu/armv7/cpu.c | 7 +++++++ arch/arm/cpu/armv7/start.S | 1 + 2 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/arch/arm/cpu/armv7/cpu.c b/arch/arm/cpu/armv7/cpu.c index 5c69d04..1c9e297 100644 --- a/arch/arm/cpu/armv7/cpu.c +++ b/arch/arm/cpu/armv7/cpu.c @@ -36,6 +36,13 @@ #include <asm/system.h> #include <asm/armv7.h>
+void save_boot_params_default(u32 r0, u32 r1, u32 r2, u32 r3) +{ +} + +void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3) + __attribute__((weak, alias("save_boot_params_default"))); + int cleanup_before_linux(void) { /* diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S index 13e2d44..e6e05e9 100644 --- a/arch/arm/cpu/armv7/start.S +++ b/arch/arm/cpu/armv7/start.S @@ -119,6 +119,7 @@ IRQ_STACK_START_IN: */
reset: + bl save_boot_params /* * set the cpu to SVC32 mode */