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Diffstat (limited to 'src/mainboard/tyan/s2895/failover.c')
-rw-r--r--src/mainboard/tyan/s2895/failover.c118
1 files changed, 118 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..a70264ec2f
--- /dev/null
+++ b/src/mainboard/tyan/s2895/failover.c
@@ -0,0 +1,118 @@
+#define ASSEMBLY 1
+#include <stdint.h>
+#include <device/pci_def.h>
+
+#include <device/pnp_def.h>
+
+#include <device/pci_ids.h>
+#include <arch/io.h>
+#include <arch/romcc_io.h>
+#include <cpu/x86/lapic.h>
+#include "pc80/mc146818rtc_early.c"
+
+#include "southbridge/nvidia/ck804/ck804_enable_rom.c"
+#include "northbridge/amd/amdk8/early_ht.c"
+#include "cpu/x86/lapic/boot_cpu.c"
+#include "northbridge/amd/amdk8/reset_test.c"
+
+#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_config32(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);
+
+#if 1
+ 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);
+#endif
+
+}
+
+
+
+static unsigned long main(unsigned long bist)
+{
+ unsigned nodeid;
+ /* Make cerain my local apic is useable */
+// enable_lapic();
+
+ nodeid = lapicid();;
+ /* Is this a cpu only reset? */
+ if (cpu_init_detected(nodeid)) {
+ if (last_boot_normal()) {
+ goto normal_image;
+ } else {
+ goto cpu_reset;
+ }
+ }
+
+ /* Is this a secondary cpu? */
+ if (!boot_cpu()) {
+ if (last_boot_normal()) {
+ goto normal_image;
+ } else {
+ goto fallback_image;
+ }
+ }
+
+ /* 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();
+
+ /* Is this a deliberate reset by the bios */
+ if (bios_reset_detected() && last_boot_normal()) {
+ 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:
+ asm volatile ("jmp __normal_image"
+ : /* outputs */
+ : "a" (bist) /* inputs */
+ : /* clobbers */
+ );
+ cpu_reset:
+#if 0
+ //CPU reset will reset memtroller ???
+ asm volatile ("jmp __cpu_reset"
+ : /* outputs */
+ : "a"(bist) /* inputs */
+ : /* clobbers */
+ );
+#endif
+
+ fallback_image:
+ return bist;
+}