Patrick Georgi (pgeorgi@google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/14572
-gerrit
commit 512bac3a9d12b86e166524b02debab374a14de2e Author: Patrick Georgi pgeorgi@chromium.org Date: Mon May 2 17:22:29 2016 +0800
lib/cbfs: Use fmap derived information about the COREBOOT region
It used to use CONFIG_CBFS_SIZE. The plan is that CBFS_SIZE only informs default*.fmd generation, while everything else derives its information from there.
Also document the existing assumption that boot media should access the COREBOOT region (and not any other potentially existing fmap region containing a CBFS).
Change-Id: I08254e4510f71edf99c2c8b56ac8f92008727c4a Signed-off-by: Patrick Georgi pgeorgi@chromium.org --- src/lib/Makefile.inc | 7 +++++++ src/lib/cbfs.c | 9 +++++++-- 2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc index 3352a30..4c6a395 100644 --- a/src/lib/Makefile.inc +++ b/src/lib/Makefile.inc @@ -179,6 +179,13 @@ $(call src-to-obj,smm,$(dir)/version.c) : $(obj)/build.h $(call src-to-obj,verstage,$(dir)/version.c) : $(obj)/build.h $(call src-to-obj,postcar,$(dir)/version.c) : $(obj)/build.h
+$(call src-to-obj,bootblock,$(dir)/cbfs.c) : $(obj)/fmap_config.h +$(call src-to-obj,romstage,$(dir)/cbfs.c) : $(obj)/fmap_config.h +$(call src-to-obj,ramstage,$(dir)/cbfs.c) : $(obj)/fmap_config.h +$(call src-to-obj,smm,$(dir)/cbfs.c) : $(obj)/fmap_config.h +$(call src-to-obj,verstage,$(dir)/cbfs.c) : $(obj)/fmap_config.h +$(call src-to-obj,postcar,$(dir)/cbfs.c) : $(obj)/fmap_config.h + romstage-y += bootmode.c ramstage-y += bootmode.c verstage-y += bootmode.c diff --git a/src/lib/cbfs.c b/src/lib/cbfs.c index e1626d7..7b9f932 100644 --- a/src/lib/cbfs.c +++ b/src/lib/cbfs.c @@ -25,6 +25,8 @@ #include <symbols.h> #include <timestamp.h>
+#include "fmap_config.h" + #define ERROR(x...) printk(BIOS_ERR, "CBFS: " x) #define LOG(x...) printk(BIOS_INFO, "CBFS: " x) #if IS_ENABLED(CONFIG_DEBUG_CBFS) @@ -215,6 +217,7 @@ out: return 0; }
+/* This only supports the "COREBOOT" fmap region. */ static int cbfs_master_header_props(struct cbfs_props *props) { struct cbfs_header header; @@ -227,13 +230,15 @@ static int cbfs_master_header_props(struct cbfs_props *props) if (bdev == NULL) return -1;
+ uint32_t fmap_top = ___FMAP__COREBOOT_BASE + ___FMAP__COREBOOT_SIZE; + /* Find location of header using signed 32-bit offset from * end of CBFS region. */ - offset = CONFIG_CBFS_SIZE - sizeof(int32_t); + offset = fmap_top - sizeof(int32_t); if (rdev_readat(bdev, &rel_offset, offset, sizeof(int32_t)) < 0) return -1;
- offset = CONFIG_CBFS_SIZE + rel_offset; + offset = fmap_top + rel_offset; if (rdev_readat(bdev, &header, offset, sizeof(header)) < 0) return -1;