Add M25P20-old
This older (ST-branded) revision of M25P20 chip does not support RDID and
hence was not detected correctly. This patch adds a workaround similar
to M25P40-old.
Corresponding to flashrom svn r1652.
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
diff --git a/flashchips.c b/flashchips.c
index d4ab1be..1c28cb5 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -8298,7 +8298,7 @@
},
{
- .vendor = "ST",
+ .vendor = "ST", /* Numonyx */
.name = "M25P20",
.bustype = BUS_SPI,
.manufacture_id = ST_ID,
@@ -8319,10 +8319,39 @@
.block_erase = spi_block_erase_c7,
}
},
- .printlock = spi_prettyprint_status_register_default_bp3, /* TODO: check */
+ .printlock = spi_prettyprint_status_register_default_bp1,
.unlock = spi_disable_blockprotect,
.write = spi_chip_write_256,
- .read = spi_chip_read,
+ .read = spi_chip_read, /* Fast read (0x0B) supported */
+ .voltage = {2700, 3600},
+ },
+
+ {
+ .vendor = "ST",
+ .name = "M25P20-old",
+ .bustype = BUS_SPI,
+ .manufacture_id = 0, /* Not used. */
+ .model_id = ST_M25P20_RES,
+ .total_size = 256,
+ .page_size = 256,
+ .feature_bits = FEATURE_WRSR_WREN,
+ .tested = TEST_OK_PREW,
+ .probe = probe_spi_res1,
+ .probe_timing = TIMING_ZERO,
+ .block_erasers =
+ {
+ {
+ .eraseblocks = { {64 * 1024, 4} },
+ .block_erase = spi_block_erase_d8,
+ }, {
+ .eraseblocks = { {256 * 1024, 1} },
+ .block_erase = spi_block_erase_c7,
+ }
+ },
+ .printlock = spi_prettyprint_status_register_default_bp1,
+ .unlock = spi_disable_blockprotect,
+ .write = spi_chip_write_256,
+ .read = spi_chip_read, /* Fast read (0x0B) supported */
.voltage = {2700, 3600},
},