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kernel flags: Add flags field to kernel preamble.

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1. Increase kernel preamble revision from 2.1 to 2.2.
2. Add flags field to kernel preamble.
3. Update futility to accept flags parameter for vbutil_kernel and
cmd_sign for kernel.
4. Pass in an extra flags field to SignKernelBlob and
CreateKernelPreamble.

BUG=chrome-os-partner:35861
BRANCH=None
TEST=1) "make runalltests" completes successfully. 2) vboot_reference
compiles successfully for ryu. 3) Verified flags field in header using
futility show.

Change-Id: If9f06f98778a7339194c77090cbef4807d5e34e2
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://chromium-review.googlesource.com/245950
Tested-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Commit-Queue: Furquan Shaikh <furquan@chromium.org>
This commit is contained in:
Furquan Shaikh
2015-02-03 15:34:29 -08:00
committed by ChromeOS Commit Bot
parent 623d6c4744
commit 80e779d50b
13 changed files with 89 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
firmware/include/vboot_struct.h
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@@ -180,7 +180,7 @@ typedef struct VbFirmwarePreambleHeader {
/****************************************************************************/
#define KERNEL_PREAMBLE_HEADER_VERSION_MAJOR 2
#define KERNEL_PREAMBLE_HEADER_VERSION_MINOR 1
#define KERNEL_PREAMBLE_HEADER_VERSION_MINOR 2
/* Preamble block for kernel, version 2.0
*
@@ -260,9 +260,17 @@ typedef struct VbKernelPreambleHeader {
/* Size of 16-bit header for vmlinuz in bytes. Readers should return 0
for header version < 2.1 */
uint64_t vmlinuz_header_size;
/*
* Flags passed in by the signer. Readers should return 0 for header
* version < 2.2. Flags field is currently defined as:
* [31:2] - Reserved (for future use)
* [1:0] - Kernel image type (0b00 - CrOS, 0b01 - bootimg)
*/
uint32_t flags;
} __attribute__((packed)) VbKernelPreambleHeader;
#define EXPECTED_VBKERNELPREAMBLEHEADER2_1_SIZE 112
#define EXPECTED_VBKERNELPREAMBLEHEADER2_2_SIZE 116
/****************************************************************************/