[coreboot-gerrit] Change in coreboot[master]: cbfstool/fit.c: Fix for older CPUs without total_size in mcu_header
Patrick Georgi (Code Review)
gerrit at coreboot.org
Fri Jun 22 11:20:27 CEST 2018
Patrick Georgi has submitted this change and it was merged. ( https://review.coreboot.org/27090 )
Change subject: cbfstool/fit.c: Fix for older CPUs without total_size in mcu_header
......................................................................
cbfstool/fit.c: Fix for older CPUs without total_size in mcu_header
Some older CPUs have a fixed size of 2048 bytes for microcode total size.
Change-Id: Ia50c087af41b0df14b607ce3c3b4eabc602e8738
Signed-off-by: Arthur Heymans <arthur at aheymans.xyz>
Reviewed-on: https://review.coreboot.org/27090
Reviewed-by: Patrick Georgi <pgeorgi at google.com>
Tested-by: build bot (Jenkins) <no-reply at coreboot.org>
---
M util/cbfstool/fit.c
1 file changed, 7 insertions(+), 2 deletions(-)
Approvals:
build bot (Jenkins): Verified
Patrick Georgi: Looks good to me, approved
diff --git a/util/cbfstool/fit.c b/util/cbfstool/fit.c
index e3e6c32..d33cb56 100644
--- a/util/cbfstool/fit.c
+++ b/util/cbfstool/fit.c
@@ -226,13 +226,18 @@
mcu_header = rom_buffer_pointer(&image->buffer, current_offset);
+ /* Newer microcode updates include a size field, whereas older
+ * containers set it at 0 and are exactly 2048 bytes long */
+ uint32_t total_size = mcu_header->total_size
+ ? mcu_header->total_size : 2048;
+
/* Quickly sanity check a prospective microcode update. */
- if (mcu_header->total_size < sizeof(*mcu_header))
+ if (total_size < sizeof(*mcu_header))
break;
/* FIXME: Should the checksum be validated? */
mcus[num_mcus].offset = current_offset;
- mcus[num_mcus].size = mcu_header->total_size;
+ mcus[num_mcus].size = total_size;
/* Proceed to next payload. */
current_offset += mcus[num_mcus].size;
--
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Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: Ia50c087af41b0df14b607ce3c3b4eabc602e8738
Gerrit-Change-Number: 27090
Gerrit-PatchSet: 3
Gerrit-Owner: Arthur Heymans <arthur at aheymans.xyz>
Gerrit-Reviewer: Patrick Georgi <pgeorgi at google.com>
Gerrit-Reviewer: build bot (Jenkins) <no-reply at coreboot.org>
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