Bright Moon T25S40 in flashrom
While trying to resurrect a dead SATA to USB 3 bridge, I turned my attention to one of the two ICs it had: an SPI flash chip marked T25S40, which seems to be made by Bright Moon, and also isn’t supported by flashrom out of the box.
Thankfully, someone made a pull request for its support. That, however, got lost somewhere in the review process, so I had to apply it and build flashrom myself.
Curiously, my T25S40 didn’t have model ID 0x2013, but 0x3213. Changing the expected value in flashrom worked, so I suppose it’s another revision the original patch didn’t account for.
Since I had to fix the patch to compile with newer flashrom version, here is the modified version:
diff --git a/flashchips.c b/flashchips.c
index 204f34f..9c311a0 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -3670,6 +3670,45 @@ const struct flashchip flashchips[] = {
.voltage = {4500, 5500},
},
+ {
+ .vendor = "BrightMoon",
+ .name = "T25S40",
+ .bustype = BUS_SPI,
+ .manufacture_id = 0x5e,
+ //.model_id = 0x2013,
+ .model_id = 0x3213,
+ .total_size = 512,
+ .page_size = 256,
+ .feature_bits = FEATURE_WRSR_WREN,
+ .tested = TEST_OK_PREW,
+ .probe = PROBE_SPI_RDID,
+ .probe_timing = TIMING_ZERO,
+ .block_erasers =
+ {
+ {
+ .eraseblocks = { {4 * 1024, 128} },
+ .block_erase = SPI_BLOCK_ERASE_20,
+ }, {
+ .eraseblocks = { {32 * 1024, 16} },
+ .block_erase = SPI_BLOCK_ERASE_52,
+ }, {
+ .eraseblocks = { {64 * 1024, 8} },
+ .block_erase = SPI_BLOCK_ERASE_D8,
+ }, {
+ .eraseblocks = { {512 * 1024, 1} },
+ .block_erase = SPI_BLOCK_ERASE_60,
+ }, {
+ .eraseblocks = { {512 * 1024, 1} },
+ .block_erase = SPI_BLOCK_ERASE_C7,
+ }
+ },
+ .printlock = SPI_PRETTYPRINT_STATUS_REGISTER_BP3_SRWD,
+ .unlock = SPI_DISABLE_BLOCKPROTECT_BP3_SRWD,
+ .write = SPI_CHIP_WRITE256,
+ .read = SPI_CHIP_READ, /* Fast read (0x0B), dual I/O read (0x3B) supported */
+ .voltage = {2700, 3600},
+ },
+
{
.vendor = "Catalyst",
.name = "CAT28F512",And no, I didn’t manage to fix that SATA bridge. I wager the main IC is dead, sadly.