Stefan Reinauer (stefan.reinauer@coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/1775
-gerrit
commit d02aac8504a1b38e602d40afedcab5509be42355 Author: Duncan Laurie dlaurie@chromium.org Date: Wed Oct 10 14:21:23 2012 -0700
SPI: Fix and enable Fast Read support
- Fix handling of 5-byte Fast Read command in the ICH SPI driver. This fix is ported from the U-boot driver. - Allow CONFIG_SPI_FLASH_NO_FAST_READ to be overridden by defining a name for the bool in Kconfig and removing the forced select in southbridge config - Fix use of CONFIG_SPI_FLASH_NO_FAST_READ in SPI drivers to use #if instead of #ifdef - Relocate flash functions in SMM so they are usable. This really only needs to happen for read function pointer since it uses a global function rather than a static one from the chip, but it is good to ensure the rest are set up correctly as well.
Change-Id: Ic1bb0764cb111f96dd8a389d83b39fe8f5e72fbd Signed-off-by: Duncan Laurie dlaurie@chromium.org --- src/drivers/spi/Kconfig | 2 +- src/drivers/spi/gigadevice.c | 4 ++-- src/drivers/spi/macronix.c | 2 +- src/drivers/spi/spi_flash.c | 10 +++++++++- src/drivers/spi/winbond.c | 2 +- src/include/spi.h | 1 + src/southbridge/intel/bd82x6x/Kconfig | 1 - src/southbridge/intel/bd82x6x/spi.c | 6 ++++++ 8 files changed, 21 insertions(+), 7 deletions(-)
diff --git a/src/drivers/spi/Kconfig b/src/drivers/spi/Kconfig index 334ee95..8e6191e 100644 --- a/src/drivers/spi/Kconfig +++ b/src/drivers/spi/Kconfig @@ -80,7 +80,7 @@ config SPI_FLASH_WINBOND data in the SPI flash and your SPI flash is made by Winbond.
config SPI_FLASH_NO_FAST_READ - bool + bool "Disable Fast Read command" default n depends on SPI_FLASH help diff --git a/src/drivers/spi/gigadevice.c b/src/drivers/spi/gigadevice.c index 8454705..0647baf 100644 --- a/src/drivers/spi/gigadevice.c +++ b/src/drivers/spi/gigadevice.c @@ -154,7 +154,7 @@ static int gigadevice_write(struct spi_flash *flash, u32 offset, cmd[3] = offset & 0xff; #if CONFIG_DEBUG_SPI_FLASH printk(BIOS_SPEW, - "PP gigadevice.c: %#p => cmd = { %#02x %#02x%02x%02x }" + "PP gigadevice.c: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x }" " chunk_len = %zu\n", buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len); #endif @@ -226,7 +226,7 @@ struct spi_flash *spi_flash_probe_gigadevice(struct spi_slave *spi, u8 *idcode)
stm->flash.write = gigadevice_write; stm->flash.erase = gigadevice_erase; -#ifdef CONFIG_SPI_FLASH_NO_FAST_READ +#if CONFIG_SPI_FLASH_NO_FAST_READ stm->flash.read = spi_flash_cmd_read_slow; #else stm->flash.read = spi_flash_cmd_read_fast; diff --git a/src/drivers/spi/macronix.c b/src/drivers/spi/macronix.c index 148527d..f9138e1 100644 --- a/src/drivers/spi/macronix.c +++ b/src/drivers/spi/macronix.c @@ -210,7 +210,7 @@ struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode)
mcx->flash.write = macronix_write; mcx->flash.erase = macronix_erase; -#ifdef CONFIG_SPI_FLASH_NO_FAST_READ +#if CONFIG_SPI_FLASH_NO_FAST_READ mcx->flash.read = spi_flash_cmd_read_slow; #else mcx->flash.read = spi_flash_cmd_read_fast; diff --git a/src/drivers/spi/spi_flash.c b/src/drivers/spi/spi_flash.c index 4757486..7116cbf 100644 --- a/src/drivers/spi/spi_flash.c +++ b/src/drivers/spi/spi_flash.c @@ -281,7 +281,7 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, /* search the table for matches in shift and id */ for (i = 0; i < ARRAY_SIZE(flashes); ++i) if (flashes[i].shift == shift && flashes[i].idcode == *idp) { -#ifdef __SMM__ +#if CONFIG_SMM_TSEG && defined(__SMM__) /* Need to relocate this function */ tseg_relocate((void **)&flashes[i].probe); #endif @@ -296,6 +296,14 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, goto err_manufacturer_probe; }
+#if CONFIG_SMM_TSEG && defined(__SMM__) + /* Ensure flash handlers are valid for TSEG */ + tseg_relocate((void **)&flash->read); + tseg_relocate((void **)&flash->write); + tseg_relocate((void **)&flash->erase); + tseg_relocate((void **)&flash->name); +#endif + printk(BIOS_INFO, "SF: Detected %s with page size %x, total %x\n", flash->name, flash->sector_size, flash->size);
diff --git a/src/drivers/spi/winbond.c b/src/drivers/spi/winbond.c index 0e50843..50c2ed4 100644 --- a/src/drivers/spi/winbond.c +++ b/src/drivers/spi/winbond.c @@ -205,7 +205,7 @@ struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode)
stm->flash.write = winbond_write; stm->flash.erase = winbond_erase; -#ifdef CONFIG_SPI_FLASH_NO_FAST_READ +#if CONFIG_SPI_FLASH_NO_FAST_READ stm->flash.read = spi_flash_cmd_read_slow; #else stm->flash.read = spi_flash_cmd_read_fast; diff --git a/src/include/spi.h b/src/include/spi.h index 7d195d0..5fbe51e 100644 --- a/src/include/spi.h +++ b/src/include/spi.h @@ -46,6 +46,7 @@
/* SPI opcodes */ #define SPI_OPCODE_WREN 0x06 +#define SPI_OPCODE_FAST_READ 0x0b
/*----------------------------------------------------------------------- * Representation of a SPI slave, i.e. what we're communicating with. diff --git a/src/southbridge/intel/bd82x6x/Kconfig b/src/southbridge/intel/bd82x6x/Kconfig index 75858c2..7634b80 100644 --- a/src/southbridge/intel/bd82x6x/Kconfig +++ b/src/southbridge/intel/bd82x6x/Kconfig @@ -34,7 +34,6 @@ config SOUTH_BRIDGE_OPTIONS # dummy select PCIEXP_ASPM select PCIEXP_COMMON_CLOCK select SPI_FLASH - select SPI_FLASH_NO_FAST_READ
config EHCI_BAR hex diff --git a/src/southbridge/intel/bd82x6x/spi.c b/src/southbridge/intel/bd82x6x/spi.c index 53b9982..05649fc 100644 --- a/src/southbridge/intel/bd82x6x/spi.c +++ b/src/southbridge/intel/bd82x6x/spi.c @@ -484,6 +484,12 @@ static void spi_setup_type(spi_transaction *trans) if (trans->bytesout == 4) { /* and bytesin is > 0 */ trans->type = SPI_OPCODE_TYPE_READ_WITH_ADDRESS; } + + /* Fast read command is called with 5 bytes instead of 4 */ + if (trans->out[0] == SPI_OPCODE_FAST_READ && trans->bytesout == 5) { + trans->type = SPI_OPCODE_TYPE_READ_WITH_ADDRESS; + --trans->bytesout; + } }
static int spi_setup_opcode(spi_transaction *trans)