x86: fsp: Save stack address to CMOS for next S3 boot

[u-boot] / 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 d2d603967ef24f7932e504d7ca96528855d972f0..d55455f2d09a022c0cd000fd22ab30eeb3acb5d4 100644 (file)
--- 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));