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Code Issues Releases Wiki Activity

Fix verification with sparse layouts

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The full verification step was not accounting for sparse layouts.
Instead of the old contents, combine_image_by_layout() implicitly
assumed the new contents for unspecified regions.

Change-Id: I44e0cea621f2a3d4dc70fa7e93c52ed95e54014a
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/30372
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Nico Huber 2018-12-22 00:53:14 +01:00
parent ec8b8a7feb
commit 69f96f6029
3 changed files with 34 additions and 9 deletions
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24
flashrom.c
View File

@ -2307,17 +2307,23 @@ static void combine_image_by_layout(const struct flashctx *const flashctx,
uint8_t *const newcontents, const uint8_t *const oldcontents)
{
const struct flashrom_layout *const layout = get_layout(flashctx);
const struct romentry *included;
chipoff_t start = 0;
size_t i;
for (i = 0; i < layout->num_entries; ++i) {
if (layout->entries[i].included)
continue;
const chipoff_t region_start = layout->entries[i].start;
const chipsize_t region_len = layout->entries[i].end - layout->entries[i].start + 1;
memcpy(newcontents + region_start, oldcontents + region_start, region_len);
while ((included = layout_next_included_region(layout, start))) {
if (included->start > start) {
/* copy everything up to the start of this included region */
memcpy(newcontents + start, oldcontents + start, included->start - start);
}
/* skip this included region */
start = included->end + 1;
if (start == 0)
return;
}
/* copy the rest of the chip */
const chipsize_t copy_len = flashctx->chip->total_size * 1024 - start;
memcpy(newcontents + start, oldcontents + start, copy_len);
}
/**

18
layout.c
View File

@ -225,3 +225,21 @@ int normalize_romentries(const struct flashctx *flash)
return ret;
}
const struct romentry *layout_next_included_region(
const struct flashrom_layout *const l, const chipoff_t where)
{
unsigned int i;
const struct romentry *lowest = NULL;
for (i = 0; i < l->num_entries; ++i) {
if (!l->entries[i].included)
continue;
if (l->entries[i].end < where)
continue;
if (!lowest || lowest->start > l->entries[i].start)
lowest = &l->entries[i];
}
return lowest;
}

1
layout.h
View File

@ -60,5 +60,6 @@ struct single_layout {
struct flashrom_layout *get_global_layout(void);
int process_include_args(struct flashrom_layout *);
const struct romentry *layout_next_included_region(const struct flashrom_layout *, chipoff_t);
#endif /* !__LAYOUT_H__ */