src/mainboard/tyan/s4880/failover.c

   1 #define ASSEMBLY 1
   2 #include <stdint.h>
   3 #include <device/pci_def.h>
   4 #include <device/pci_ids.h>
   5 #include <arch/io.h>
   6 #include <arch/romcc_io.h>
   7 #include <cpu/x86/lapic.h>
   8 #include "pc80/mc146818rtc_early.c"
   9 #include "southbridge/amd/amd8111/amd8111_enable_rom.c"
  10 #include "northbridge/amd/amdk8/early_ht.c"
  11 #include "cpu/x86/lapic/boot_cpu.c"
  12 #include "cpu/x86/mtrr/earlymtrr.c"
  13 #include "northbridge/amd/amdk8/reset_test.c"
  14
  15 #if CONFIG_LOGICAL_CPUS==1
  16 #include "cpu/amd/dualcore/dualcore_id.c"
  17 #endif
  18
  19
  20 static unsigned long main(unsigned long bist)
  21 {
  22         /* Make cerain my local apic is useable */
  23         enable_lapic();
  24
  25         /* Is this a cpu only reset? */
  26         if (early_mtrr_init_detected()) {
  27                if (last_boot_normal()) {
  28                         goto normal_image;
  29                 } else {
  30                         goto fallback_image;
  31                 }
  32         }
  33         /* Is this a secondary cpu? */
  34         if (!boot_cpu()) {
  35                 if (last_boot_normal()) {
  36                         goto normal_image;
  37                 } else {
  38                         goto fallback_image;
  39                 }
  40         }
  41
  42
  43         /* Nothing special needs to be done to find bus 0 */
  44         /* Allow the HT devices to be found */
  45         enumerate_ht_chain();
  46
  47         /* Setup the 8111 */
  48         amd8111_enable_rom();
  49
  50         /* Is this a deliberate reset by the bios */
  51         if (bios_reset_detected() && last_boot_normal()) {
  52                 goto normal_image;
  53         }
  54         /* This is the primary cpu how should I boot? */
  55         else if (do_normal_boot()) {
  56                 goto normal_image;
  57         }
  58         else {
  59                 goto fallback_image;
  60         }
  61  normal_image:
  62         asm volatile ("jmp __normal_image"
  63                 : /* outputs */
  64                 : "a" (bist) /* inputs */
  65                 : /* clobbers */
  66                 );
  67  fallback_image:
  68         return bist;
  69 }