diff options
Diffstat (limited to 'src/mainboard/tyan/s2895/failover.c')
-rw-r--r-- | src/mainboard/tyan/s2895/failover.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/src/mainboard/tyan/s2895/failover.c b/src/mainboard/tyan/s2895/failover.c new file mode 100644 index 0000000000..cb70a2e9de --- /dev/null +++ b/src/mainboard/tyan/s2895/failover.c @@ -0,0 +1,108 @@ +#define ASSEMBLY 1 +#define __ROMCC__ + +#include <stdint.h> +#include <string.h> +#include <device/pci_def.h> +#include <arch/io.h> +#include <device/pnp_def.h> +#include <arch/romcc_io.h> +#include <cpu/x86/lapic.h> +#include "option_table.h" +#include "pc80/mc146818rtc_early.c" + +#include "cpu/x86/lapic/boot_cpu.c" +#include "northbridge/amd/amdk8/reset_test.c" + +#include "southbridge/nvidia/ck804/ck804_enable_rom.c" +#include "northbridge/amd/amdk8/early_ht.c" + +#define post_code(x) outb(x, 0x80) + +#include "superio/smsc/lpc47b397/lpc47b397_early_serial.c" +#include "superio/smsc/lpc47b397/lpc47b397_early_gpio.c" +#define SUPERIO_GPIO_DEV PNP_DEV(0x2e, LPC47B397_RT) +#define SUPERIO_GPIO_IO_BASE 0x400 + +static void sio_setup(void) +{ + + unsigned value; + uint32_t dword; + uint8_t byte; + + pci_write_config32(PCI_DEV(0, CK804_DEVN_BASE+1, 0), 0xac, 0x047f0400); + + byte = pci_read_config8(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0x7b); + byte |= 0x20; + pci_write_config8(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0x7b, byte); + + dword = pci_read_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0xa0); + dword |= (1<<29)|(1<<0); + pci_write_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0xa0, dword); + + dword = pci_read_config32(PCI_DEV(0, CK804_DEVN_BASE+1, 0), 0xa4); + dword |= (1<<16); + pci_write_config32(PCI_DEV(0, CK804_DEVN_BASE+1 , 0), 0xa4, dword); + + lpc47b397_enable_serial(SUPERIO_GPIO_DEV, SUPERIO_GPIO_IO_BASE); + value = lpc47b397_gpio_offset_in(SUPERIO_GPIO_IO_BASE, 0x77); + value &= 0xbf; + lpc47b397_gpio_offset_out(SUPERIO_GPIO_IO_BASE, 0x77, value); + +} + +void mainboard_bsp_init() +{ + /* Nothing special needs to be done to find bus 0 */ + /* Allow the HT devices to be found */ + + enumerate_ht_chain(); + + sio_setup(); + + /* Setup the ck804 */ + ck804_enable_rom(); +} + +void cache_as_ram_main(unsigned long bist, unsigned long cpu_init_detectedx) +{ + unsigned last_boot_normal_x = last_boot_normal(); + + /* Is this a cpu only reset? or Is this a secondary cpu? */ + if ((cpu_init_detectedx) || (!boot_cpu())) { + if (last_boot_normal_x) { + goto normal_image; + } else { + goto fallback_image; + } + } + + mainboard_bsp_init(); + + /* Is this a deliberate reset by the bios */ + post_code(0x22); + if (bios_reset_detected() && last_boot_normal_x) { + goto normal_image; + } + /* This is the primary cpu how should I boot? */ + else if (do_normal_boot()) { + goto normal_image; + } + else { + goto fallback_image; + } + normal_image: + post_code(0x23); + __asm__ volatile ("jmp __normal_image" + : /* outputs */ + : "a" (bist), "b"(cpu_init_detectedx) /* inputs */ + ); + + fallback_image: + post_code(0x25); + __asm__ volatile ("jmp __fallback_image" + : /* outputs */ + : "a" (bist), "b" (cpu_init_detectedx) /* inputs */ + ); +} |