src/mainboard/tyan/s2850/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 "northbridge/amd/amdk8/reset_test.c"
  13
  14 #if CONFIG_LOGICAL_CPUS==1
  15 #include "cpu/amd/dualcore/dualcore_id.c"
  16 #endif
  17
  18
  19 static unsigned long main(unsigned long bist)
  20 {
  21 #if CONFIG_LOGICAL_CPUS==1
  22         struct node_core_id id;
  23 #else
  24         unsigned nodeid;
  25 #endif
  26         /* Make cerain my local apic is useable */
  27         enable_lapic();
  28
  29 #if CONFIG_LOGICAL_CPUS==1
  30         id = get_node_core_id_x();
  31         /* Is this a cpu only reset? */
  32         if (cpu_init_detected(id.nodeid)) {
  33 #else
  34         nodeid = lapicid();
  35         /* Is this a cpu only reset? */
  36         if (cpu_init_detected(nodeid)) {
  37 #endif
  38
  39                 if (last_boot_normal()) {
  40                         goto normal_image;
  41                 } else {
  42                         goto cpu_reset;
  43                 }
  44         }
  45         /* Is this a secondary cpu? */
  46         if (!boot_cpu()) {
  47                 if (last_boot_normal()) {
  48                         goto normal_image;
  49                 } else {
  50                         goto fallback_image;
  51                 }
  52         }
  53
  54
  55         /* Nothing special needs to be done to find bus 0 */
  56         /* Allow the HT devices to be found */
  57         enumerate_ht_chain();
  58
  59         /* Setup the 8111 */
  60         amd8111_enable_rom();
  61
  62         /* Is this a deliberate reset by the bios */
  63         if (bios_reset_detected() && last_boot_normal()) {
  64                 goto normal_image;
  65         }
  66         /* This is the primary cpu how should I boot? */
  67         else if (do_normal_boot()) {
  68                 goto normal_image;
  69         }
  70         else {
  71                 goto fallback_image;
  72         }
  73  normal_image:
  74         asm volatile ("jmp __normal_image"
  75                 : /* outputs */
  76                 : "a" (bist) /* inputs */
  77                 : /* clobbers */
  78                 );
  79  cpu_reset:
  80 #if 0
  81         asm volatile ("jmp __cpu_reset"
  82                 : /* outputs */
  83                 : "a"(bist) /* inputs */
  84                 : /* clobbers */
  85                 );
  86 #endif
  87  fallback_image:
  88         return bist;
  89 }