Author: stuge
Date: 2008-10-18 15:54:30 +0200 (Sat, 18 Oct 2008)
New Revision: 3668
Modified:
trunk/util/flashrom/chipset_enable.c
Log:
flashrom: Allow the SiS 620 chipset to detect and read at least 256kb chips.
Based on the 5595 datasheet and uniflash 1.40 sources, only looking for info
about SiS620.
Signed-off-by: Urja Rannikko <[EMAIL PROTECTED]>
Acked-by: Peter Stuge <[EMAIL PROTECTED]>
Modified: trunk/util/flashrom/chipset_enable.c
===================================================================
--- trunk/util/flashrom/chipset_enable.c 2008-10-17 14:17:05 UTC (rev
3667)
+++ trunk/util/flashrom/chipset_enable.c 2008-10-18 13:54:30 UTC (rev
3668)
@@ -540,6 +540,17 @@
return -1;
}
+ /* Extended BIOS enable = 1, Lower BIOS Enable = 1 */
+ new = pci_read_byte(dev,0x40);
+ new &= 0xFB;
+ new |= 0x3;
+ pci_write_byte(dev,0x40,new);
+ newer = pci_read_byte(dev,0x40);
+ if (newer != new) {
+ printf("tried to set register 0x%x to 0x%x on %s failed
(WARNING ONLY)\n", 0x40, new, name);
+ printf("Stuck at 0x%x\n", newer);
+ return -1;
+ }
return 0;
}
--
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