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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

11
firmware/lib/include/vboot_common.h
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@@ -41,6 +41,8 @@ enum {
VBOOT_PREAMBLE_SIGNATURE,
/* Shared data is invalid. */
VBOOT_SHARED_DATA_INVALID,
/* Kernel Preamble does not contain flags */
VBOOT_KERNEL_PREAMBLE_NO_FLAGS,
VBOOT_ERROR_MAX,
};
extern const char *kVbootErrors[VBOOT_ERROR_MAX];
@@ -160,6 +162,15 @@ int VbGetKernelVmlinuzHeader(const VbKernelPreambleHeader *preamble,
uint64_t *vmlinuz_header_address,
uint64_t *vmlinuz_header_size);
/**
* Checks if the kernel preamble has flags field. This is available only if the
* Kernel Preamble Header version >=2.2. If give a header of 2.1 or lower, it
* will return VBOOT_KERNEL_PREAMBLE_NO_FLAGS.
*
* Returns VBOOT_SUCCESS if version is >=2.2.
*/
int VbKernelHasFlags(const VbKernelPreambleHeader *preamble);
/**
* Verify that the Vmlinuz Header is contained inside of the kernel blob.
*