diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2019-09-23 11:49:17 +0200 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-09-30 12:02:35 +0000 |
| commit | 50b4f78344e800bdfe9ef7d2b64331a24191e112 (patch) | |
| tree | 72ecad27649631ef97be3b522543a507437ca2d7 /src/southbridge/intel/common | |
| parent | ebf201b8f563ece11ceb60d81ba9cd676020da42 (diff) | |
sb/intel/spi: Use different SPIOPS for most SST flashes
Many supported SST flashes use the AAI OP (0xad) to write.
TESTED on Thinkpad X60 with SST25VF016B, flashrom can use AAI_WRITE op
with locked down SPIOPS.
Change-Id: Ica72eda04a8d9f4e563987871b1640565c6e7e12
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35537
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Diffstat (limited to 'src/southbridge/intel/common')
| -rw-r--r-- | src/southbridge/intel/common/spi.c | 40 |
1 files changed, 32 insertions, 8 deletions
diff --git a/src/southbridge/intel/common/spi.c b/src/southbridge/intel/common/spi.c index 268030b9c8..73181cfd54 100644 --- a/src/southbridge/intel/common/spi.c +++ b/src/southbridge/intel/common/spi.c @@ -1060,9 +1060,9 @@ void spi_finalize_ops(void) struct ich_spi_controller *cntlr = car_get_var_ptr(&g_cntlr); u16 spi_opprefix; u16 optype = 0; - struct intel_swseq_spi_config spi_config = { + struct intel_swseq_spi_config spi_config_default = { {0x06, 0x50}, /* OPPREFIXES: EWSR and WREN */ - { /* OPTYPE and OPCODE */ + { /* OPCODE and OPTYPE */ {0x01, WRITE_NO_ADDR}, /* WRSR: Write Status Register */ {0x02, WRITE_WITH_ADDR}, /* BYPR: Byte Program */ {0x03, READ_WITH_ADDR}, /* READ: Read Data */ @@ -1073,19 +1073,43 @@ void spi_finalize_ops(void) {0x0b, READ_WITH_ADDR}, /* FAST: Fast Read */ } }; + struct intel_swseq_spi_config spi_config_aai_write = { + {0x06, 0x50}, /* OPPREFIXES: EWSR and WREN */ + { /* OPCODE and OPTYPE */ + {0x01, WRITE_NO_ADDR}, /* WRSR: Write Status Register */ + {0x02, WRITE_WITH_ADDR}, /* BYPR: Byte Program */ + {0x03, READ_WITH_ADDR}, /* READ: Read Data */ + {0x05, READ_NO_ADDR}, /* RDSR: Read Status Register */ + {0x20, WRITE_WITH_ADDR}, /* SE20: Sector Erase 0x20 */ + {0x9f, READ_NO_ADDR}, /* RDID: Read ID */ + {0xad, WRITE_NO_ADDR}, /* Auto Address Increment Word Program */ + {0x04, WRITE_NO_ADDR} /* Write Disable */ + } + }; + const struct spi_flash *flash = boot_device_spi_flash(); + struct intel_swseq_spi_config *spi_config = &spi_config_default; int i; + /* + * Some older SST SPI flashes support AAI write but use 0xaf opcde for + * that. Flashrom uses the byte program opcode to write those flashes, + * so this configuration is fine too. SST25VF064C (id = 0x4b) is an + * exception. + */ + if (flash && flash->vendor == VENDOR_ID_SST && (flash->model & 0x00ff) != 0x4b) + spi_config = &spi_config_aai_write; + if (spi_locked()) return; - intel_southbridge_override_spi(&spi_config); + intel_southbridge_override_spi(spi_config); - spi_opprefix = spi_config.opprefixes[0] - | (spi_config.opprefixes[1] << 8); + spi_opprefix = spi_config->opprefixes[0] + | (spi_config->opprefixes[1] << 8); writew_(spi_opprefix, cntlr->preop); - for (i = 0; i < ARRAY_SIZE(spi_config.ops); i++) { - optype |= (spi_config.ops[i].type & 3) << (i * 2); - writeb_(spi_config.ops[i].op, &cntlr->opmenu[i]); + for (i = 0; i < ARRAY_SIZE(spi_config->ops); i++) { + optype |= (spi_config->ops[i].type & 3) << (i * 2); + writeb_(spi_config->ops[i].op, &cntlr->opmenu[i]); } writew_(optype, cntlr->optype); } |