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| author | Urja Rannikko <urjaman@gmail.com> | 2008-10-18 13:54:30 +0000 |
|---|---|---|
| committer | Peter Stuge <peter@stuge.se> | 2008-10-18 13:54:30 +0000 |
| commit | 582364d8089cb630e673eaee3710733b11d5125b (patch) | |
| tree | 2e89e5e3a45bcc976dc558f0f08ef16a59f9d253 /util/flashrom/chipset_enable.c | |
| parent | 71a2fbf9d531a3e97660e60d384c1ed15191f54f (diff) | |
| download | coreboot-582364d8089cb630e673eaee3710733b11d5125b.tar.xz | |
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 <urjaman@gmail.com>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3668 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'util/flashrom/chipset_enable.c')
| -rw-r--r-- | util/flashrom/chipset_enable.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/util/flashrom/chipset_enable.c b/util/flashrom/chipset_enable.c index 22c40dffb2..3ad99cc750 100644 --- a/util/flashrom/chipset_enable.c +++ b/util/flashrom/chipset_enable.c @@ -540,6 +540,17 @@ static int enable_flash_sis5595(struct pci_dev *dev, const char *name) 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; } |