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sb/intel/spi: read FLCOMP descriptor early and cache it 

Change-Id: I4e5fe3ff083f2d0db1cfde16550b57537d5f7262
Signed-off-by: Stefan Tauner <stefan.tauner@gmx.at>
Reviewed-on: https://review.coreboot.org/c/28349
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Stefan Tauner 2018-08-26 13:53:16 +02:00 committed by Patrick Georgi
parent 630a418fea
commit 327205dc2a
1 changed files with 5 additions and 6 deletions
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11
src/southbridge/intel/common/spi.c
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@ -121,6 +121,7 @@ typedef struct ich9_spi_regs {
typedef struct ich_spi_controller { typedef struct ich_spi_controller {
int locked; int locked;
uint32_t flmap0; uint32_t flmap0;
uint32_t flcomp;
uint32_t hsfs; uint32_t hsfs;
ich9_spi_regs *ich9_spi; ich9_spi_regs *ich9_spi;
@ -346,6 +347,8 @@ void spi_init(void)
if (cntlr->hsfs & HSFS_FDV) { if (cntlr->hsfs & HSFS_FDV) {
writel_ (4, &ich9_spi->fdoc); writel_ (4, &ich9_spi->fdoc);
cntlr->flmap0 = readl_(&ich9_spi->fdod); cntlr->flmap0 = readl_(&ich9_spi->fdod);
writel_ (0x1000, &ich9_spi->fdoc);
cntlr->flcomp = readl_(&ich9_spi->fdod);
} }
} }
@ -930,7 +933,6 @@ static int spi_flash_programmer_probe(const struct spi_slave *spi,
struct spi_flash *flash) struct spi_flash *flash)
{ {
ich_spi_controller *cntlr = car_get_var_ptr(&g_cntlr); ich_spi_controller *cntlr = car_get_var_ptr(&g_cntlr);
uint32_t flcomp;
if (IS_ENABLED(CONFIG_SOUTHBRIDGE_INTEL_I82801GX)) if (IS_ENABLED(CONFIG_SOUTHBRIDGE_INTEL_I82801GX))
return spi_flash_generic_probe(spi, flash); return spi_flash_generic_probe(spi, flash);
@ -959,15 +961,12 @@ static int spi_flash_programmer_probe(const struct spi_slave *spi,
break; break;
} }
writel_ (0x1000, &cntlr->ich9_spi->fdoc); flash->size = 1 << (19 + (cntlr->flcomp & 7));
flcomp = readl_(&cntlr->ich9_spi->fdod);
flash->size = 1 << (19 + (flcomp & 7));
flash->ops = &spi_flash_ops; flash->ops = &spi_flash_ops;
if ((cntlr->hsfs & HSFS_FDV) && ((cntlr->flmap0 >> 8) & 3)) if ((cntlr->hsfs & HSFS_FDV) && ((cntlr->flmap0 >> 8) & 3))
flash->size += 1 << (19 + ((flcomp >> 3) & 7)); flash->size += 1 << (19 + ((cntlr->flcomp >> 3) & 7));
printk (BIOS_DEBUG, "flash size 0x%x bytes\n", flash->size); printk (BIOS_DEBUG, "flash size 0x%x bytes\n", flash->size);
return 0; return 0;