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cbfs/vboot: remove firmware component support

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The Chrome OS verified boot path supported multiple CBFS
instances in the boot media as well as stand-alone assets
sitting in each vboot RW slot. Remove the support for the
stand-alone assets and always use CBFS accesses as the
way to retrieve data.

This is implemented by adding a cbfs_locator object which
is queried for locating the current CBFS. Additionally, it
is also signalled prior to when a program is about to be
loaded by coreboot for the subsequent stage/payload. This
provides the same opportunity as previous for vboot to
hook in and perform its logic.

BUG=chromium:445938
BRANCH=None
TEST=Built and ran on glados.
CQ-DEPEND=CL:307121,CL:31691,CL:31690

Change-Id: I6a3a15feb6edd355d6ec252c36b6f7885b383099
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/12689
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Aaron Durbin
2015-12-08 17:00:23 -06:00
parent bf3dbaf86d
commit 6d720f38e0
26 changed files with 206 additions and 335 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
src/include/cbfs.h
View File

@@ -81,4 +81,18 @@ struct cbfs_props {
/* Return < 0 on error otherwise props are filled out accordingly. */
int cbfs_boot_region_properties(struct cbfs_props *props);
/* Allow external logic to take action prior to locating a program
* (stage or payload). */
void cbfs_prepare_program_locate(void);
/* Object used to identify location of current cbfs to use for cbfs_boot_*
* operations. It's used by cbfs_boot_region_properties() and
* cbfs_prepare_program_locate(). */
struct cbfs_locator {
const char *name;
void (*prepare)(void);
/* Returns 0 on successful fill of cbfs properties. */
int (*locate)(struct cbfs_props *props);
};
#endif

5
src/include/program_loading.h
View File

@@ -106,10 +106,7 @@ static inline void prog_set_entry(struct prog *prog, void *e, void *arg)
}
/* Locate the identified program to run. Return 0 on success. < 0 on error. */
static inline int prog_locate(struct prog *prog)
{
return asset_locate(&prog->asset);
}
int prog_locate(struct prog *prog);
/* Run the program described by prog. */
void prog_run(struct prog *prog);