diff options
Diffstat (limited to 'chipset_enable.c')
| -rw-r--r-- | chipset_enable.c | 71 |
1 files changed, 60 insertions, 11 deletions
diff --git a/chipset_enable.c b/chipset_enable.c index 2e4a5fc..e1684f9 100644 --- a/chipset_enable.c +++ b/chipset_enable.c @@ -997,25 +997,74 @@ static int enable_flash_nvidia_nforce2(struct pci_dev *dev, const char *name) static int enable_flash_ck804(struct pci_dev *dev, const char *name) { - uint8_t old, new; + uint32_t segctrl; + uint8_t reg, old, new; + unsigned int err = 0; + + /* 0x8A is special: it is a single byte and only one nibble is touched. */ + reg = 0x8A; + segctrl = pci_read_byte(dev, reg); + if ((segctrl & 0x3) != 0x0) { + if ((segctrl & 0xC) != 0x0) { + msg_pinfo("Can not unlock existing protection in register 0x%02x.\n", reg); + err++; + } else { + msg_pdbg("Unlocking protection in register 0x%02x... ", reg); + rpci_write_byte(dev, reg, segctrl & 0xF0); + + segctrl = pci_read_byte(dev, reg); + if ((segctrl & 0x3) != 0x0) { + msg_pinfo("Could not unlock protection in register 0x%02x (new value: 0x%x).\n", + reg, segctrl); + err++; + } else + msg_pdbg("OK\n"); + } + } - pci_write_byte(dev, 0x92, 0x00); - if (pci_read_byte(dev, 0x92) != 0x00) { - msg_pinfo("Setting register 0x%x to 0x%x on %s failed " - "(WARNING ONLY).\n", 0x92, 0x00, name); + for (reg = 0x8C; reg <= 0x94; reg += 4) { + segctrl = pci_read_long(dev, reg); + if ((segctrl & 0x33333333) == 0x00000000) { + /* reads and writes are unlocked */ + continue; + } + if ((segctrl & 0xCCCCCCCC) != 0x00000000) { + msg_pinfo("Can not unlock existing protection in register 0x%02x.\n", reg); + err++; + continue; + } + msg_pdbg("Unlocking protection in register 0x%02x... ", reg); + rpci_write_long(dev, reg, 0x00000000); + + segctrl = pci_read_long(dev, reg); + if ((segctrl & 0x33333333) != 0x00000000) { + msg_pinfo("Could not unlock protection in register 0x%02x (new value: 0x%08x).\n", + reg, segctrl); + err++; + } else + msg_pdbg("OK\n"); + } + + if (err > 0) { + msg_pinfo("%d locks could not be disabled, disabling writes (reads may also fail).\n", err); + programmer_may_write = 0; } - old = pci_read_byte(dev, 0x88); - new = old | 0xc0; + reg = 0x88; + old = pci_read_byte(dev, reg); + new = old | 0xC0; if (new != old) { - rpci_write_byte(dev, 0x88, new); - if (pci_read_byte(dev, 0x88) != new) { - msg_pinfo("Setting register 0x%x to 0x%x on %s failed " - "(WARNING ONLY).\n", 0x88, new, name); + rpci_write_byte(dev, reg, new); + if (pci_read_byte(dev, reg) != new) { + msg_pinfo("Setting register 0x%02x to 0x%x on %s failed.\n", reg, new, name); + err++; } } if (enable_flash_nvidia_common(dev, name)) + err++; + + if (err > 0) return ERROR_NONFATAL; else return 0; |
