Re: [flashrom] [PATCH] ICH6+ FWH IDSEL override

[Chris Kinney]

[root@k2 flashrom]# ./flashrom
flashrom v0.9.0-r685
coreboot table found at 0xcf7f3c00.
Vendor ID: KONTRON, part ID: 986LCD-M
Found chipset "Intel ICH7/ICH7R", enabling flash write... OK.
This chipset supports the following protocols: LPC,FWH.
Disabling flash write protection for board "Kontron 986LCD-M"... OK.
Calibrating delay loop... OK.
No EEPROM/flash device found.
If you know which flash chip you have, and if this version of flashrom
supports a similar flash chip, you can try to force read your chip. Run:
flashrom -f -r -c similar_supported_flash_chip filename

Note: flashrom can never write when the flash chip isn't found 
automatically.

[root@k2 flashrom]# ./flashrom -p internal=fwh_idsel=0
flashrom v0.9.0-r685
coreboot table found at 0xcf7f3c00.
Vendor ID: KONTRON, part ID: 986LCD-M
Found chipset "Intel ICH7/ICH7R", enabling flash write...
Setting IDSEL=0x0 for top 16 MBOK.
This chipset supports the following protocols: LPC,FWH.
Disabling flash write protection for board "Kontron 986LCD-M"... OK.
Calibrating delay loop... OK.
Found chip "SST SST49LF016C" (2048 KB, FWH) at physical address 0xffe00000.
No operations were specified.

Re-Acted By: Chris Kinney

Carl-Daniel Hailfinger wrote:
> Allow the user to override FWH IDSEL on ICH6 and later.
> Usage:
> flashrom -p internal=fwh_idsel=0
>
> Signed-off-by: Carl-Daniel Hailfinger
> Index: flashrom-ich6_fwh_idsel/chipset_enable.c
>
> --- flashrom-ich6_fwh_idsel/chipset_enable.c	(Revision 683)
> +++ flashrom-ich6_fwh_idsel/chipset_enable.c	(Arbeitskopie)
> @@ -203,6 +203,7 @@
>  {
>    uint32_t fwh_conf;
>    int i;
>
> char *idsel = NULL;
>
> /* Ignore all legacy ranges below 1 MB. */
> /* FWH_SEL1 */
>
> @@ -232,6 +233,19 @@
>    		     (0xff0 + i) * 0x100000,
>    		     (fwh_conf >> i) & 0x1 ? "en" : "dis");
> if (programmer_param)
> idsel = strstr(programmer_param, "fwh_idsel=");
> if (idsel) {
> idsel += strlen("fwh_idsel=");
> fwh_conf = (uint32_t)strtoul(idsel, NULL, 0);
> /* FIXME: Need to undo this on shutdown. */
> printf("\nSetting IDSEL=0x%x for top 16 MB", fwh_conf);
> pci_write_long(dev, 0xd0, fwh_conf);
> pci_write_word(dev, 0xd4, fwh_conf);
> }
> return enable_flash_ich(dev, name, 0xdc);
>
> }