Subrata Banik has uploaded this change for review. ( https://review.coreboot.org/21388
Change subject: arch/x86: Enable ebda library for romstage and postcar ......................................................................
arch/x86: Enable ebda library for romstage and postcar
This patch provides a kconfig option as EARLY_EBDA_INIT to ensures user can make use of EBDA library even during early boot stages like romstage, postcar.
Change-Id: I603800a531f56b6ebd460d5951c35a645fbfe492 Signed-off-by: Subrata Banik subrata.banik@intel.com --- M src/arch/x86/Kconfig M src/arch/x86/Makefile.inc 2 files changed, 10 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/88/21388/1
diff --git a/src/arch/x86/Kconfig b/src/arch/x86/Kconfig index dbfb881..0da44bd 100644 --- a/src/arch/x86/Kconfig +++ b/src/arch/x86/Kconfig @@ -131,6 +131,14 @@ help Increase this value if preram cbmem console is getting truncated
+config EARLY_EBDA_INIT + bool "Initialize EBDA area early in romstage" + default n + help + Initialize BIOS EBDA area early in romstage to allow bootloader to + use this region for storing data which can be available across + various stages. + config PC80_SYSTEM bool default y if ARCH_X86 diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc index 5f184c5..4f84b28 100644 --- a/src/arch/x86/Makefile.inc +++ b/src/arch/x86/Makefile.inc @@ -209,6 +209,7 @@ romstage-y += cbmem.c romstage-y += cbfs_and_run.c romstage-$(CONFIG_ARCH_RAMSTAGE_X86_32) += cpu_common.c +romstage-$(CONFIG_EARLY_EBDA_INIT) += ebda.c romstage-y += memcpy.c romstage-y += memmove.c romstage-y += memset.c @@ -281,6 +282,7 @@ postcar-y += boot.c postcar-y += cbfs_and_run.c postcar-y += cpu_common.c +postcar-$(CONFIG_EARLY_EBDA_INIT) += ebda.c postcar-y += exit_car.S postcar-y += memcpy.c postcar-y += memmove.c