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flashchips: Add SST26VF016B(A), SST26VF032B(A), SST26VF064B(A)

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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: David Hendricks <david.hendricks@gmail.com>
Signed-off-by: Stefan Tauner <stefan.tauner@student.tuwien.ac.at>
Reviewed-on: https://review.coreboot.org/25962
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Wei Hu 2018-04-30 14:02:08 -07:00 committed by David Hendricks
parent 1b365931ea
commit 25584de9d0
4 changed files with 130 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
chipdrivers.h
View File

@ -102,6 +102,7 @@ int spi_disable_blockprotect_bp2_ep_srwd(struct flashctx *flash);
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);

114
flashchips.c
View File

@ -12916,6 +12916,120 @@ const struct flashchip flashchips[] = {
.voltage = {2700, 3600},
},
{
.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",

2
flashchips.h
View File

@ -699,6 +699,8 @@
#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

13
spi25_statusreg.c
View File

@ -195,6 +195,19 @@ int spi_disable_blockprotect(struct flashctx *flash)
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)