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utils: Add sanity check when reading SPI flash ID

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
This commit is contained in:
Alex Forencich 2022-04-16 15:23:17 -07:00
parent a6affe4190
commit f44641e91e
1 changed files with 7 additions and 0 deletions
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7
utils/flash_spi.c
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@ -344,6 +344,13 @@ int spi_flash_init(struct flash_device *fdev)
printf("Memory type: 0x%02x\n", mem_type);
printf("Memory capacity: 0x%02x\n", mem_capacity);
if (mfr_id == 0 || mfr_id == 0xff)
{
fprintf(stderr, "Failed to read flash ID\n");
spi_flash_deselect(fdev);
return -1;
}
// convert from BCD
mem_capacity = (mem_capacity & 0xf) + (((mem_capacity >> 4) & 0xf) * 10);