cbfs/vboot: remove firmware component support

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>

1 files changed, 15 insertions, 9 deletions

diff --git a/src/vendorcode/google/chromeos/vboot2/common.c b/src/vendorcode/google/chromeos/vboot2/common.c
index fbad1126f8..4282408535 100644
--- a/src/vendorcode/google/chromeos/vboot2/common.c
+++ b/src/vendorcode/google/chromeos/vboot2/common.c
@@ -115,21 +115,27 @@ struct vb2_shared_data *vb2_get_shared_data(void)
 	return (void *)((uintptr_t)wd + wd->buffer_offset);
 }
 
-int vb2_get_selected_region(struct region_device *rdev)
+int vb2_get_selected_region(struct region *region)
 {
 	const struct selected_region *reg = vb2_selected_region();
-	struct region region = {
-		.offset = reg->offset,
-		.size = reg->size,
-	};
-	return vboot_region_device(&region, rdev);
+
+	if (reg == NULL)
+		return -1;
+
+	if (reg->offset == 0 && reg->size == 0)
+		return -1;
+
+	region->offset = reg->offset;
+	region->size = reg->size;
+
+	return 0;
 }
 
-void vb2_set_selected_region(struct region_device *rdev)
+void vb2_set_selected_region(const struct region *region)
 {
 	struct selected_region *reg = vb2_selected_region();
-	reg->offset = region_device_offset(rdev);
-	reg->size = region_device_sz(rdev);
+	reg->offset = region_offset(region);
+	reg->size = region_sz(region);
 }
 
 int vboot_is_slot_selected(void)