From 3af487d419f87fef25a976055a0656c446212e0e Mon Sep 17 00:00:00 2001 From: Marc Jones Date: Wed, 15 Oct 2008 17:50:29 +0000 Subject: SB600 has four write once LPC ROM protect areas It is not possible to write enable that area once the register is set so print a warning. Corresponding to flashrom svn r324 and coreboot v2 svn r3659. Signed-off-by: Marc Jones Acked-by: Ronald G. Minnich Acked-by: Peter Stuge Acked-by: Carl-Daniel Hailfinger --- chipset_enable.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'chipset_enable.c') diff --git a/chipset_enable.c b/chipset_enable.c index c6aa876..22c40df 100644 --- a/chipset_enable.c +++ b/chipset_enable.c @@ -571,6 +571,26 @@ static int enable_flash_amd8111(struct pci_dev *dev, const char *name) return 0; } +static int enable_flash_sb600(struct pci_dev *dev, const char *name) +{ + uint32_t old, new; + uint8_t reg; + + /* Clear ROM Protect 0-3 */ + for (reg = 0x50; reg < 0x60; reg+=4) { + old = pci_read_long(dev, reg); + new = old & 0xFFFFFFFC; + if (new != old) { + pci_write_byte(dev, reg, new); + if (pci_read_long(dev, reg) != new) { + printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", 0x50, new, name); + } + } + } + + return 0; +} + static int enable_flash_ck804(struct pci_dev *dev, const char *name) { uint8_t old, new; @@ -744,6 +764,7 @@ static const FLASH_ENABLE enables[] = { {0x1039, 0x0008, "SiS5595", enable_flash_sis5595}, {0x1022, 0x2080, "AMD CS5536", enable_flash_cs5536}, {0x1022, 0x7468, "AMD8111", enable_flash_amd8111}, + {0x1002, 0x438D, "ATI(AMD) SB600", enable_flash_sb600}, {0x10B9, 0x1533, "ALi M1533", enable_flash_ali_m1533}, {0x10de, 0x0050, "NVIDIA CK804", enable_flash_ck804}, /* LPC */ {0x10de, 0x0051, "NVIDIA CK804", enable_flash_ck804}, /* Pro */ -- cgit v1.1