diff options
Diffstat (limited to 'src/mainboard/tyan/s2885/auto.c')
| -rw-r--r-- | src/mainboard/tyan/s2885/auto.c | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/src/mainboard/tyan/s2885/auto.c b/src/mainboard/tyan/s2885/auto.c index cff103b9cc..8275f6d5d7 100644 --- a/src/mainboard/tyan/s2885/auto.c +++ b/src/mainboard/tyan/s2885/auto.c @@ -26,20 +26,52 @@ #define SERIAL_DEV PNP_DEV(0x2e, W83627HF_SP1) +/* Look up a which bus a given node/link combination is on. + * return 0 when we can't find the answer. + */ +static unsigned node_link_to_bus(unsigned node, unsigned link) +{ + unsigned reg; + + for(reg = 0xE0; reg < 0xF0; reg += 0x04) { + unsigned config_map; + config_map = pci_read_config32(PCI_DEV(0, 0x18, 1), reg); + if ((config_map & 3) != 3) { + continue; + } + if ((((config_map >> 4) & 7) == node) && + (((config_map >> 8) & 3) == link)) + { + return (config_map >> 16) & 0xff; + } + } + return 0; +} + static void hard_reset(void) { - set_bios_reset(); + device_t dev; + + /* Find the device */ + dev = PCI_DEV(node_link_to_bus(0, 2), 0x04, 3); + + set_bios_reset(); /* enable cf9 */ - pci_write_config8(PCI_DEV(0, 0x04, 3), 0x41, 0xf1); + pci_write_config8(dev, 0x41, 0xf1); /* reset */ outb(0x0e, 0x0cf9); } static void soft_reset(void) { + device_t dev; + + /* Find the device */ + dev = PCI_DEV(node_link_to_bus(0, 2), 0x04, 0); + set_bios_reset(); - pci_write_config8(PCI_DEV(0, 0x04, 0), 0x47, 1); + pci_write_config8(dev, 0x47, 1); } static void memreset_setup(void) @@ -192,7 +224,7 @@ static void main(unsigned long bist) || (id.coreid != 0) #endif ) { - stop_this_cpu(); + stop_this_cpu(); // it will stop all cores except core0 of cpu0 } } @@ -223,4 +255,5 @@ static void main(unsigned long bist) sdram_initialize(sizeof(cpu)/sizeof(cpu[0]), cpu); + } |