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flashrom.c:Add a function to get list of sectors that need erasing

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Add a function that returns a list of sectors (as seen by the first
erase function) that need erasing.

Change-Id: Ic57ca1cca3d1646543f6b5939ba9c35db8d08256
Signed-off-by: Aarya Chaumal <aarya.chaumal@gmail.com>
This commit is contained in:
Aarya Chaumal 2022-07-14 12:51:14 +05:30 committed by Simon Buhrow
parent 26e98f6f06
commit bcb4f037d8
1 changed files with 36 additions and 0 deletions
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36
flashrom.c
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@ -1036,6 +1036,42 @@ void align_region(const struct erase_layout *layout, struct flashctx *const flas
} }
} }
void select_erase_functions(const struct erase_layout *layout, size_t function_index, size_t block_num, struct flashctx *flashctx, void *curcontents, void *newcontents, chipoff_t region_start, chipoff_t region_end);
void select_erase_functions(const struct erase_layout *layout, size_t function_index, size_t block_num, struct flashctx *flashctx, void *curcontents, void *newcontents, chipoff_t region_start, chipoff_t region_end)
{
if (function_index == 0)
{
if (layout[function_index].layout_list[block_num].start_addr >= region_start &&
layout[function_index].layout_list[block_num].end_addr <= region_end) {
chipoff_t start_addr = layout[function_index].layout_list[block_num].start_addr;
chipoff_t end_addr = layout[function_index].layout_list[block_num].end_addr;
const chipsize_t erase_len = end_addr - start_addr + 1;
const uint8_t erased_value = ERASED_VALUE(flashctx);
layout[function_index].layout_list[block_num].selected = need_erase(curcontents + start_addr, newcontents + start_addr, erase_len, flashctx->chip->gran, erased_value);
}
}
else {
int count = 0;
int sub_block_start = layout[function_index].layout_list[block_num].first_sub_block_index;
int sub_block_end = layout[function_index].layout_list[block_num].last_sub_block_index;
for(int j = sub_block_start; j <= sub_block_end; j++) {
select_erase_functions(layout, function_index - 1, j, flashctx, curcontents, newcontents, region_start, region_end);
if (layout[function_index - 1].layout_list[j].selected)
count++;
}
if (count && count > (sub_block_end - sub_block_start + 1)/2) {
if (layout[function_index].layout_list[block_num].start_addr >= region_start &&
layout[function_index].layout_list[block_num].end_addr <= region_end) {
for (int j = sub_block_start; j <= sub_block_end; j++)
layout[function_index - 1].layout_list[j].selected = false;
layout[function_index].layout_list[block_num].selected = true;
}
}
}
}
static int walk_by_layout(struct flashctx *const flashctx, struct walk_info *const info, static int walk_by_layout(struct flashctx *const flashctx, struct walk_info *const info,
const per_blockfn_t per_blockfn) const per_blockfn_t per_blockfn)
{ {