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 "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                if (last_boot_normal()) {
  39                         goto normal_image;
  40                 } else {
  41                         goto cpu_reset;
  42                 }
  43         }
  44         /* Is this a secondary cpu? */
  45         if (!boot_cpu()) {
  46                 if (last_boot_normal()) {
  47                         goto normal_image;
  48                 } else {
  49                         goto fallback_image;
  50                 }
  51         }
  52
  53
  54         /* Nothing special needs to be done to find bus 0 */
  55         /* Allow the HT devices to be found */
  56         enumerate_ht_chain();
  57
  58         /* Setup the 8111 */
  59         amd8111_enable_rom();
  60
  61         /* Is this a deliberate reset by the bios */
  62         if (bios_reset_detected() && last_boot_normal()) {
  63                 goto normal_image;
  64         }
  65         /* This is the primary cpu how should I boot? */
  66         else if (do_normal_boot()) {
  67                 goto normal_image;
  68         }
  69         else {
  70                 goto fallback_image;
  71         }
  72  normal_image:
  73         asm volatile ("jmp __normal_image"
  74                 : /* outputs */
  75                 : "a" (bist) /* inputs */
  76                 : /* clobbers */
  77                 );
  78  cpu_reset:
  79 #if 0
  80         asm volatile ("jmp __cpu_reset"
  81                 : /* outputs */
  82                 : "a"(bist) /* inputs */
  83                 : /* clobbers */
  84                 );
  85 #endif
  86  fallback_image:
  87         return bist;
  88 }