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Add VbSharedData field parsing

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R=reinauer@chromium.org
BUG=chrome-os-partner:2578
TEST=manual

crossystem vdat_timers
should show 'LFS=0,0 LF=number1,number2 LK=number3,number4'
where number1 < number2 < number3 < number4

crossystem vdat_lfdebug
run from a dev mode console, should show
'check=12,0 index=0x00 tpmver=(hex number) lowestver=(hex number)'

crossystem vdat_flags
run from a dev mode console, flags should be 0x04.

Review URL: http://codereview.chromium.org/6685068

Change-Id: Id7b958ae300d10cdcdc1b17a1bb17b7e5069166f
This commit is contained in:
Randall Spangler
2011-03-17 16:10:21 -07:00
parent 83c3714ed3
commit f4ba19d81d
8 changed files with 227 additions and 98 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
firmware/lib/vboot_common.c
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@@ -381,6 +381,10 @@ int VerifyKernelPreamble(const VbKernelPreambleHeader* preamble,
int VbSharedDataInit(VbSharedDataHeader* header, uint64_t size) {
VBDEBUG(("VbSharedDataInit, %d bytes, header %d bytes\n", (int)size,
sizeof(VbSharedDataHeader)));
if (size < sizeof(VbSharedDataHeader)) {
VBDEBUG(("Not enough data for header.\n"));
return VBOOT_SHARED_DATA_INVALID;
@@ -397,10 +401,12 @@ int VbSharedDataInit(VbSharedDataHeader* header, uint64_t size) {
Memset(header, 0, sizeof(VbSharedDataHeader));
/* Initialize fields */
header->magic = VB_SHARED_DATA_MAGIC;
header->struct_version = VB_SHARED_DATA_VERSION;
header->struct_size = sizeof(VbSharedDataHeader);
header->data_size = size;
header->data_used = sizeof(VbSharedDataHeader);
header->firmware_index = 0xFF;
/* Success */
return VBOOT_SUCCESS;
@@ -410,6 +416,8 @@ int VbSharedDataInit(VbSharedDataHeader* header, uint64_t size) {
uint64_t VbSharedDataReserve(VbSharedDataHeader* header, uint64_t size) {
uint64_t offs = header->data_used;
VBDEBUG(("VbSharedDataReserve %d bytes at %d\n", (int)size, (int)offs));
if (!header || size > header->data_size - header->data_used) {
VBDEBUG(("VbSharedData buffer out of space.\n"));
return 0; /* Not initialized, or not enough space left. */