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Add ICH6,ICH7,ICH8,ICH9,ICH10 FWH IDSEL settings and flash decode settings to the debug output

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This can help debug cases where the BIOS does not set up a correct flash
decode for the given flash size. The Intel docs state that the decode
applies to FWH and SPI flash.

Corresponding to flashrom svn r675.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Chris Kinney <cmkinne@sandia.gov>
This commit is contained in:
Carl-Daniel Hailfinger 2009-08-10 23:30:45 +00:00
parent 6d5d2535a4
commit 4c7ea38581
1 changed files with 36 additions and 0 deletions
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36
chipset_enable.c
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@ -191,11 +191,47 @@ static int enable_flash_ich(struct pci_dev *dev, const char *name,
static int enable_flash_ich_4e(struct pci_dev *dev, const char *name) static int enable_flash_ich_4e(struct pci_dev *dev, const char *name)
{ {
/*
* Note: ICH5 has registers similar to FWH_SEL1, FWH_SEL2 and
* FWH_DEC_EN1, but they are called FB_SEL1, FB_SEL2, FB_DEC_EN1 and
* FB_DEC_EN2.
*/
return enable_flash_ich(dev, name, 0x4e); return enable_flash_ich(dev, name, 0x4e);
} }
static int enable_flash_ich_dc(struct pci_dev *dev, const char *name) static int enable_flash_ich_dc(struct pci_dev *dev, const char *name)
{ {
uint32_t fwh_conf;
int i;
/* Ignore all legacy ranges below 1 MB. */
/* FWH_SEL1 */
fwh_conf = pci_read_long(dev, 0xd0);
for (i = 7; i >= 0; i--)
printf_debug("\n0x%08x/0x%08x FWH IDSEL: 0x%x",
(0x1ff8 + i) * 0x80000,
(0x1ff0 + i) * 0x80000,
(fwh_conf >> (i * 4)) & 0xf);
/* FWH_SEL2 */
fwh_conf = pci_read_word(dev, 0xd4);
for (i = 3; i >= 0; i--)
printf_debug("\n0x%08x/0x%08x FWH IDSEL: 0x%x",
(0xff4 + i) * 0x100000,
(0xff0 + i) * 0x100000,
(fwh_conf >> (i * 4)) & 0xf);
/* FWH_DEC_EN1 */
fwh_conf = pci_read_word(dev, 0xd8);
for (i = 7; i >= 0; i--)
printf_debug("\n0x%08x/0x%08x FWH decode %sabled",
(0x1ff8 + i) * 0x80000,
(0x1ff0 + i) * 0x80000,
(fwh_conf >> (i + 0x8)) & 0x1 ? "en" : "dis");
for (i = 3; i >= 0; i--)
printf_debug("\n0x%08x/0x%08x FWH decode %sabled",
(0xff4 + i) * 0x100000,
(0xff0 + i) * 0x100000,
(fwh_conf >> i) & 0x1 ? "en" : "dis");
return enable_flash_ich(dev, name, 0xdc); return enable_flash_ich(dev, name, 0xdc);
} }