vboot: move general constants to a separate header

coreboot uses the C preprocessor on its linker scripts to
allow evaluation of macros when defining memory layout.

Move constants from 2api.h to an independent file in order
to allow for coreboot to use these constants in its memlayout
file, without needing to include the entire vboot API.

Note this commit creates two new header files:
- firmware/2lib/include/2constants.h: contains the constants
- firmware/include/vb2_constants.h: externally importable header

Also, rename VB2_WORKBUF_RECOMMENDED_SIZE to
VB2_FIRMWARE_WORKBUF_RECOMMENDED_SIZE for clarity.

BUG=b:124141368, b:124192753
TEST=Build locally
TEST=/work/vboot/src/repohooks/pre-upload.py
TEST=make clean && make runtests
TEST=make clean && COV=1 make coverage && make coverage_html
BRANCH=none

Change-Id: Id17c6955b67e51cb048b10b4be0901c0e9110a1f
Signed-off-by: Joel Kitching <kitching@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1504490
Commit-Ready: Joel Kitching <kitching@chromium.org>
Tested-by: Joel Kitching <kitching@chromium.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/host/lib/host_keyblock.c b/host/lib/host_keyblock.c
index b8c9af3a..08f2b768 100644
--- a/host/lib/host_keyblock.c
+++ b/host/lib/host_keyblock.c
@@ -144,7 +144,7 @@ struct vb2_keyblock *vb2_create_keyblock_external(
 
 struct vb2_keyblock *vb2_read_keyblock(const char *filename)
 {
-	uint8_t workbuf[VB2_WORKBUF_RECOMMENDED_SIZE];
+	uint8_t workbuf[VB2_FIRMWARE_WORKBUF_RECOMMENDED_SIZE];
 	struct vb2_workbuf wb;
 	vb2_workbuf_init(&wb, workbuf, sizeof(workbuf));