From 181bbdd51cb4ec318e8b44c1ca652310bf6abb22 Mon Sep 17 00:00:00 2001 From: Duncan Laurie Date: Sat, 23 Jun 2012 16:53:57 -0700 Subject: SMM: Add option for SPI driver to be available in SMM - add Kconfig option for CONFIG_SPI_FLASH_SMM - compile subsystem and chip drivers for smm if enabled - change mdelay(1) to udelay(500) since mdelay is not defined in SMM and a 1ms delay is worth avoiding - make flash chip structure non-const so the probe function pointers can be relocated for use in TSEG - Make SMM PCI access possible in southbridge SPI code Change-Id: Icfcbbe8e4e56658769d46af0b5bf6c79a6432641 Signed-off-by: Duncan Laurie Reviewed-on: http://review.coreboot.org/1313 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich --- src/drivers/spi/spi_flash.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'src/drivers/spi/spi_flash.c') diff --git a/src/drivers/spi/spi_flash.c b/src/drivers/spi/spi_flash.c index 6cec611504..78c209d865 100644 --- a/src/drivers/spi/spi_flash.c +++ b/src/drivers/spi/spi_flash.c @@ -12,6 +12,9 @@ #include #include #include +#ifdef __SMM__ +#include +#endif #include "spi_flash_internal.h" static void spi_flash_addr(u32 addr, u8 *cmd) @@ -115,7 +118,7 @@ int spi_flash_cmd_poll_bit(struct spi_flash *flash, unsigned long timeout, if ((status & poll_bit) == 0) break; - mdelay(1); + udelay(500); } while (timebase--); if ((status & poll_bit) == 0) @@ -206,7 +209,7 @@ out: */ #define IDCODE_CONT_LEN 0 #define IDCODE_PART_LEN 5 -static const struct { +static struct { const u8 shift; const u8 idcode; struct spi_flash *(*probe) (struct spi_slave *spi, u8 *idcode); @@ -275,6 +278,10 @@ 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__ + /* Need to relocate this function */ + tseg_relocate((void **)&flashes[i].probe); +#endif /* we have a match, call probe */ flash = flashes[i].probe(spi, idp); if (flash) -- cgit v1.2.3