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spi25_statusreg,flashchips: add SR2 read/write support

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This patch adds support for reading and writing the second status
register and enables it on a limited set of flash chips.

Chip support for RDSR2/WRSR2/extended WRSR is represented using feature
flags to be consistent with how other SPI capabilities are represented.

BUG=b:195381327,b:153800563
BRANCH=none
TEST=flashrom -{r,w,E}
TEST=flashrom --wp-{enable,disable,range,list,status} at end of patch series
TEST=logged SR2 read/write values during wp commands

Change-Id: I34a503b0958e8f2f22a2a993a6ea529eb46b41db
Signed-off-by: Nikolai Artemiev <nartemiev@google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/58570
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Nikolai Artemiev
2021-10-20 22:32:25 +11:00
committed by Anastasia Klimchuk
parent a0319804a0
commit b7ea3a9a5d
4 changed files with 53 additions and 3 deletions
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7
flashchips.c
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@ -6317,7 +6317,7 @@ const struct flashchip flashchips[] = {
.total_size = 16384,
.page_size = 256,
/* OTP: 1024B total, 256B reserved; read 0x48; write 0x42, erase 0x44 */
.feature_bits = FEATURE_WRSR_WREN | FEATURE_OTP,
.feature_bits = FEATURE_WRSR_WREN | FEATURE_OTP | FEATURE_WRSR_EXT,
.tested = TEST_OK_PREW,
.probe = probe_spi_rdid,
.probe_timing = TIMING_ZERO,
@ -6706,7 +6706,8 @@ const struct flashchip flashchips[] = {
.model_id = GIGADEVICE_GD25Q256D,
.total_size = 32768,
.page_size = 256,
.feature_bits = FEATURE_WRSR_WREN | FEATURE_OTP | FEATURE_4BA_WREN,
.feature_bits = FEATURE_WRSR_WREN | FEATURE_OTP | FEATURE_4BA_WREN |
FEATURE_WRSR_EXT | FEATURE_WRSR2,
.tested = TEST_OK_PREW,
.probe = probe_spi_rdid,
.probe_timing = TIMING_ZERO,
@ -6754,7 +6755,7 @@ const struct flashchip flashchips[] = {
.total_size = 4096,
.page_size = 256,
/* OTP: 1024B total, 256B reserved; read 0x48; write 0x42, erase 0x44 */
.feature_bits = FEATURE_WRSR_WREN | FEATURE_OTP,
.feature_bits = FEATURE_WRSR_WREN | FEATURE_OTP | FEATURE_WRSR2,
.tested = TEST_OK_PREW,
.probe = probe_spi_rdid,
.probe_timing = TIMING_ZERO,