From ba65808e7d0699e053c9892983312a11d4e2a30a Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Fri, 21 Apr 2017 07:24:39 -0700 Subject: x86: fsp: Save stack address to CMOS for next S3 boot At the end of pre-relocation phase, save the new stack address to CMOS and use it as the stack on next S3 boot for fsp_init() continuation function. Signed-off-by: Bin Meng Reviewed-by: Simon Glass Tested-by: Stefan Roese --- arch/x86/include/asm/u-boot-x86.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'arch/x86/include/asm/u-boot-x86.h') diff --git a/arch/x86/include/asm/u-boot-x86.h b/arch/x86/include/asm/u-boot-x86.h index d2d603967e..d55455f2d0 100644 --- a/arch/x86/include/asm/u-boot-x86.h +++ b/arch/x86/include/asm/u-boot-x86.h @@ -54,6 +54,19 @@ u32 isa_map_rom(u32 bus_addr, int size); /* arch/x86/lib/... */ int video_bios_init(void); +/* arch/x86/lib/fsp/... */ + +/** + * fsp_save_s3_stack() - save stack address to CMOS for next S3 boot + * + * At the end of pre-relocation phase, save the new stack address + * to CMOS and use it as the stack on next S3 boot for fsp_init() + * continuation function. + * + * @return: 0 if OK, -ve on error + */ +int fsp_save_s3_stack(void); + void board_init_f_r_trampoline(ulong) __attribute__ ((noreturn)); void board_init_f_r(void) __attribute__ ((noreturn)); -- cgit v1.2.3