David Hendricks has uploaded this change for review. ( https://review.coreboot.org/25962
Change subject: flashchips: Add SST26VF016B(A), SST26VF032B(A), SST26VF064B(A) ......................................................................
flashchips: Add SST26VF016B(A), SST26VF032B(A), SST26VF064B(A)
This patch seems to have originally been from https://patchwork.coreboot.org/patch/4126/ . The most recent version seems to be in OpenEmbedded (commit 503a572) which added support for 16Mbit and 32Mbit variants.
The OpenEmbedded patch also makes changes to linux_spi.c to add some debug prints which are omitted in this version.
From the original commit message:
Differences between SST26 and SST25: 1. The WREN instruction must be executed prior to WRSR [Section 5.31]. There is no EWSR. 2. Block protection bits are no longer in the status register. There is a dedicated 144-bit register [Table 5-6]. The device is write-protected by default. A Global Block-Protection Unlock command unlocks the entire memory [Section 4.1].
Change-Id: Ib019bed8ce955049703eb3376c32a83ef607c219 Signed-off-by: Wei Hu wei@aristanetworks.com Signed-off-by: Stefan Tauner stefan.tauner@student.tuwien.ac.at --- M chipdrivers.h M flashchips.c M flashchips.h M spi25_statusreg.c 4 files changed, 130 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/flashrom refs/changes/62/25962/1
diff --git a/chipdrivers.h b/chipdrivers.h index af59c30..0ae45f4 100644 --- a/chipdrivers.h +++ b/chipdrivers.h @@ -107,6 +107,7 @@ int spi_prettyprint_status_register_sst25(struct flashctx *flash); int spi_prettyprint_status_register_sst25vf016(struct flashctx *flash); int spi_prettyprint_status_register_sst25vf040b(struct flashctx *flash); +int spi_disable_blockprotect_sst26_global_unprotect(struct flashctx *flash);
/* sfdp.c */ int probe_spi_sfdp(struct flashctx *flash); diff --git a/flashchips.c b/flashchips.c index 70057d4..86498af 100644 --- a/flashchips.c +++ b/flashchips.c @@ -12922,6 +12922,120 @@
{ .vendor = "SST", + .name = "SST26VF016B(A)", + .bustype = BUS_SPI, + .manufacture_id = SST_ID, + .model_id = SST_SST26VF016B, + .total_size = 2048, + .page_size = 256, + .feature_bits = FEATURE_WRSR_WREN | FEATURE_OTP, + .tested = TEST_OK_PREW, + .probe = probe_spi_rdid, + .probe_timing = TIMING_ZERO, + .block_erasers = + { + { + .eraseblocks = { {4 * 1024, 512} }, + .block_erase = spi_block_erase_20, + }, { + .eraseblocks = { + {8 * 1024, 4}, + {32 * 1024, 1}, + {64 * 1024, 30}, + {32 * 1024, 1}, + {8 * 1024, 4}, + }, + .block_erase = spi_block_erase_d8, + }, { + .eraseblocks = { {2 * 1024 * 1024, 1} }, + .block_erase = spi_block_erase_c7, + }, + }, + .printlock = spi_prettyprint_status_register_plain, /* TODO: improve */ + .unlock = spi_disable_blockprotect_sst26_global_unprotect, + .write = spi_chip_write_256, /* Multi I/O supported */ + .read = spi_chip_read, /* Fast read (0x0B) and multi I/O supported */ + .voltage = {2700, 3600}, + }, + { + .vendor = "SST", + .name = "SST26VF032B(A)", + .bustype = BUS_SPI, + .manufacture_id = SST_ID, + .model_id = SST_SST26VF032B, + .total_size = 4096, + .page_size = 256, + .feature_bits = FEATURE_WRSR_WREN | FEATURE_OTP, + .tested = TEST_UNTESTED, + .probe = probe_spi_rdid, + .probe_timing = TIMING_ZERO, + .block_erasers = + { + { + .eraseblocks = { {4 * 1024, 1024} }, + .block_erase = spi_block_erase_20, + }, { + .eraseblocks = { + {8 * 1024, 4}, + {32 * 1024, 1}, + {64 * 1024, 62}, + {32 * 1024, 1}, + {8 * 1024, 4}, + }, + .block_erase = spi_block_erase_d8, + }, { + .eraseblocks = { {4 * 1024 * 1024, 1} }, + .block_erase = spi_block_erase_c7, + }, + }, + .printlock = spi_prettyprint_status_register_plain, /* TODO: improve */ + .unlock = spi_disable_blockprotect_sst26_global_unprotect, + .write = spi_chip_write_256, /* Multi I/O supported */ + .read = spi_chip_read, /* Fast read (0x0B) and multi I/O supported */ + .voltage = {2700, 3600}, + }, + + + { + .vendor = "SST", + .name = "SST26VF064B(A)", + .bustype = BUS_SPI, + .manufacture_id = SST_ID, + .model_id = SST_SST26VF064B, + .total_size = 8192, + .page_size = 256, + .feature_bits = FEATURE_WRSR_WREN | FEATURE_OTP, + .tested = TEST_OK_PREW, + .probe = probe_spi_rdid, + .probe_timing = TIMING_ZERO, + .block_erasers = + { + { + .eraseblocks = { {4 * 1024, 2048} }, + .block_erase = spi_block_erase_20, + }, { + .eraseblocks = { + {8 * 1024, 4}, + {32 * 1024, 1}, + {64 * 1024, 126}, + {32 * 1024, 1}, + {8 * 1024, 4}, + }, + .block_erase = spi_block_erase_d8, + }, { + .eraseblocks = { {8 * 1024 * 1024, 1} }, + .block_erase = spi_block_erase_c7, + }, + }, + .printlock = spi_prettyprint_status_register_plain, /* TODO: improve */ + .unlock = spi_disable_blockprotect_sst26_global_unprotect, + .write = spi_chip_write_256, /* Multi I/O supported */ + .read = spi_chip_read, /* Fast read (0x0B) and multi I/O supported */ + .voltage = {2700, 3600}, + }, + + { + .vendor = "SST", .name = "SST25WF512", .bustype = BUS_SPI, .manufacture_id = SST_ID, diff --git a/flashchips.h b/flashchips.h index 68a67fa..36d7af6 100644 --- a/flashchips.h +++ b/flashchips.h @@ -703,6 +703,8 @@ #define SST_SST25VF064C 0x254B #define SST_SST26VF016 0x2601 #define SST_SST26VF032 0x2602 +#define SST_SST26VF016B 0x2641 +#define SST_SST26VF032B 0x2642 #define SST_SST26VF064B 0x2643 #define SST_SST27SF512 0xA4 #define SST_SST27SF010 0xA5 diff --git a/spi25_statusreg.c b/spi25_statusreg.c index 05c7acf..d4f0b5d 100644 --- a/spi25_statusreg.c +++ b/spi25_statusreg.c @@ -199,6 +199,19 @@ return spi_disable_blockprotect_generic(flash, 0x3C, 0, 0, 0xFF); }
+int spi_disable_blockprotect_sst26_global_unprotect(struct flashctx *flash) +{ + int result = spi_write_enable(flash); + if (result) + return result; + + static const unsigned char cmd[] = { 0x98 }; /* ULBPR */ + result = spi_send_command(flash, sizeof(cmd), 0, cmd, NULL); + if (result) + msg_cerr("ULBPR failed\n"); + return result; +} + /* A common block protection disable that tries to unset the status register bits masked by 0x0C (BP0-1) and * protected/locked by bit #7. Useful when bits 4-5 may be non-0). */ int spi_disable_blockprotect_bp1_srwd(struct flashctx *flash)