src/mainboard/tyan/s2875/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 <arch/smp/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/p6/boot_cpu.c"
  12 #include "northbridge/amd/amdk8/reset_test.c"
  13
  14 #define HAVE_REGPARM_SUPPORT 0
  15 #if HAVE_REGPARM_SUPPORT
  16 static unsigned long main(unsigned long bist)
  17 {
  18 #else
  19 static void main(void)
  20 {
  21         unsigned long bist = 0;
  22 #endif
  23         /* Make cerain my local apic is useable */
  24         enable_lapic();
  25
  26         /* Is this a cpu only reset? */
  27         if (cpu_init_detected()) {
  28                 if (last_boot_normal()) {
  29                         goto normal_image;
  30                 } else {
  31                         goto cpu_reset;
  32                 }
  33         }
  34         /* Is this a secondary cpu? */
  35         if (!boot_cpu()) {
  36                 if (last_boot_normal()) {
  37                         goto normal_image;
  38                 } else {
  39                         goto fallback_image;
  40                 }
  41         }
  42
  43
  44         /* Nothing special needs to be done to find bus 0 */
  45         /* Allow the HT devices to be found */
  46         enumerate_ht_chain();
  47
  48         /* Setup the 8111 */
  49         amd8111_enable_rom();
  50
  51         /* Is this a deliberate reset by the bios */
  52         if (bios_reset_detected() && last_boot_normal()) {
  53                 goto normal_image;
  54         }
  55         /* This is the primary cpu how should I boot? */
  56         else if (do_normal_boot()) {
  57                 goto normal_image;
  58         }
  59         else {
  60                 goto fallback_image;
  61         }
  62  normal_image:
  63         asm("jmp __normal_image"
  64                 : /* outputs */
  65                 : "a" (bist) /* inputs */
  66                 : /* clobbers */
  67                 );
  68  cpu_reset:
  69         asm("jmp __cpu_reset"
  70                 : /* outputs */
  71                 : "a"(bist) /* inputs */
  72                 : /* clobbers */
  73                 );
  74  fallback_image:
  75 #if HAVE_REGPARM_SUPPORT
  76         return bist;
  77 #else
  78         return;
  79 #endif
  80 }