cgpt: Support non-standard (smaller) entries table
The standard says that entries table must be at least 16384 bytes. On
some of our devices, the NOR section is only 8 KiB and used to store
both primary and secondary tables. On this device, we can only store 24
entries.
Therefore, this CL adds support for non-standard entry table. It adjusts
the MIN_NUMBER_OF_ENTRIES to 16, and replaces GPT_ENTRIES_SECTORS with
CalculateEntriesSectors.
BUG=chromium:441812
BRANCH=none
TEST=unittest
Change-Id: I6b85b35ce5612c7abb22142f8252bd0d45b676c5
Reviewed-on: https://chromium-review.googlesource.com/234996
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
Commit-Queue: Nam Nguyen <namnguyen@chromium.org>
Tested-by: Nam Nguyen <namnguyen@chromium.org>
diff --git a/tests/vboot_kernel_tests.c b/tests/vboot_kernel_tests.c
index 6f47ae3..41ac7ad 100644
--- a/tests/vboot_kernel_tests.c
+++ b/tests/vboot_kernel_tests.c
@@ -87,14 +87,14 @@
/* Set LBA pointers for primary or secondary header */
if (is_secondary) {
h->my_lba = MOCK_SECTOR_COUNT - GPT_HEADER_SECTORS;
- h->entries_lba = h->my_lba - GPT_ENTRIES_SECTORS;
+ h->entries_lba = h->my_lba - CalculateEntriesSectors(h);
} else {
h->my_lba = GPT_PMBR_SECTORS;
h->entries_lba = h->my_lba + 1;
}
- h->first_usable_lba = 2 + GPT_ENTRIES_SECTORS;
- h->last_usable_lba = MOCK_SECTOR_COUNT - 2 - GPT_ENTRIES_SECTORS;
+ h->first_usable_lba = 2 + CalculateEntriesSectors(h);
+ h->last_usable_lba = MOCK_SECTOR_COUNT - 2 - CalculateEntriesSectors(h);
h->header_crc32 = HeaderCrc(h);
}