Chris, can you please test this one? It doesn't contain the fix, but it has all the debug output. Basically, this is the mergeable part, and once this is committed, it's a lot easier for me to work on the real fix. Plus, the hack to get it going is a mere one-liner after this. What I'd need to get this committed are the output lines mentioning FWH IDSEL/decode. Thanks!
Regards, Carl-Daniel
Add ICH6,ICH7,ICH8,ICH9,ICH10 FWH IDSEL settings and flash decode settings to the debug output. 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.
Signed-off-by: Carl-Daniel Hailfinger c-d.hailfinger.devel.2006@gmx.net
Index: flashrom-ich6_fwh_idsel_debug/chipset_enable.c =================================================================== --- flashrom-ich6_fwh_idsel_debug/chipset_enable.c (Revision 674) +++ flashrom-ich6_fwh_idsel_debug/chipset_enable.c (Arbeitskopie) @@ -191,11 +191,47 @@
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); }
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); }