Nikolai Artemiev submitted this change.
flashchips: Add write-protect support for GD25LQ255E
datasheet: https://www.gigadevice.com.cn/Public/Uploads/uploadfile/files/20221129/DS-00562-GD25LQ255E-Rev1.1.pdf
BUG=b:311336475
TEST=Verified on karis
w/o this patch:
$ flashrom_tester --flashrom_binary ./flashrom internal Lock_top_quad
--> Failed
w/ this patch:
$ flashrom_tester --flashrom_binary ./flashrom internal Lock_top_quad
--> Pass
This lock_top_quad test did(copied from partial_lock_test()):
* Disable hardware WP so we can modify the protected range.
* Then enable software WP so the range is enforced and enable
hardware WP so that flashrom does not disable software WP during the
operation.
* Check that we cannot write to the protected region.
* Check that we can write to the non protected region.
Change-Id: I1425e931433c00caceaabc6037a79099d6d5eac5
Signed-off-by: Tyler Wang <tyler.wang@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/79460
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nikolai Artemiev <nartemiev@google.com>
Reviewed-by: Hsuan-ting Chen <roccochen@google.com>
---
M flashchips.c
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/flashchips.c b/flashchips.c
index 8c2fecd..663b01b 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -6557,7 +6557,7 @@
.page_size = 256,
/* OTP: 1024B total, 256B reserved; read 0x48; write 0x42, erase 0x44 */
.feature_bits = FEATURE_WRSR_WREN | FEATURE_OTP | FEATURE_WRSR_EXT2 | FEATURE_4BA,
- .tested = TEST_OK_PREW,
+ .tested = TEST_OK_PREWB,
.probe = PROBE_SPI_RDID,
.probe_timing = TIMING_ZERO,
.block_erasers =
@@ -6593,6 +6593,16 @@
.write = SPI_CHIP_WRITE256,
.read = SPI_CHIP_READ, /* Fast read (0x0B) and multi I/O supported */
.voltage = {1650, 2000},
+ .reg_bits =
+ {
+ .srp = {STATUS1, 7, RW},
+ .srl = {STATUS2, 0, RW},
+ .bp = {{STATUS1, 2, RW}, {STATUS1, 3, RW}, {STATUS1, 4, RW}},
+ .tb = {STATUS1, 5, RW}, /* Called BP3 in datasheet, acts like TB */
+ .sec = {STATUS1, 6, RW}, /* Called BP4 in datasheet, acts like SEC */
+ .cmp = {STATUS2, 6, RW},
+ },
+ .decode_range = DECODE_RANGE_SPI25,
},
{
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