x86: Import code from coreboot's libpayload to parse the coreboot table

This change also forces the lib_sysinfo structure to be in the .data
section. Otherwise it ends up in the .bss section. U-boot assumes that it
doesn't need to copy it over during relocation, and instead fills that
whole section with zeroes. If we really were booting from ROM that would be
appropriate, but we need some information from the coreboot tables (memory
size) before then and have to fill that structure before relocation. We
skirt u-boot's assumption by putting this in .data where it assumes there
is still read only but non-zero data.

Signed-off-by: Gabe Black <gabeblack@chromium.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/board/chromebook-x86/coreboot/coreboot.c b/board/chromebook-x86/coreboot/coreboot.c
index 44c6f15..22a643c 100644
--- a/board/chromebook-x86/coreboot/coreboot.c
+++ b/board/chromebook-x86/coreboot/coreboot.c
@@ -26,6 +26,8 @@
 #include <asm/u-boot-x86.h>
 #include <flash.h>
 #include <netdev.h>
+#include <asm/arch-coreboot/tables.h>
+#include <asm/arch-coreboot/sysinfo.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -34,6 +36,14 @@ unsigned long monitor_flash_len = CONFIG_SYS_MONITOR_LEN;
 /*
  * Miscellaneous platform dependent initializations
  */
+int cpu_init_f(void)
+{
+	int ret = get_coreboot_info(&lib_sysinfo);
+	if (ret != 0)
+		printf("Failed to parse coreboot tables.\n");
+	return ret;
+}
+
 int board_early_init_f(void)
 {
 	return 0;