src/lib/generic_sdram.c

   1 #include <lib.h> /* Prototypes */
   2
   3 static inline void print_debug_sdram_8(const char *strval, uint32_t val)
   4 {
   5 #if CONFIG_CACHE_AS_RAM
   6         printk(BIOS_DEBUG, "%s%02x\n", strval, val);
   7 #else
   8         print_debug(strval); print_debug_hex8(val); print_debug("\n");
   9 #endif
  10 }
  11
  12 /* Setup SDRAM */
  13 #if CONFIG_RAMINIT_SYSINFO
  14 void sdram_initialize(int controllers, const struct mem_controller *ctrl, void *sysinfo)
  15 #else
  16 void sdram_initialize(int controllers, const struct mem_controller *ctrl)
  17 #endif
  18 {
  19         int i;
  20         /* Set the registers we can set once to reasonable values */
  21         for(i = 0; i < controllers; i++) {
  22                 print_debug_sdram_8("Ram1.", i);
  23
  24         #if CONFIG_RAMINIT_SYSINFO
  25                 sdram_set_registers(ctrl + i, sysinfo);
  26         #else
  27                 sdram_set_registers(ctrl + i);
  28         #endif
  29         }
  30
  31         /* Now setup those things we can auto detect */
  32         for(i = 0; i < controllers; i++) {
  33                 print_debug_sdram_8("Ram2.", i);
  34
  35         #if CONFIG_RAMINIT_SYSINFO
  36                 sdram_set_spd_registers(ctrl + i, sysinfo);
  37         #else
  38                 sdram_set_spd_registers(ctrl + i);
  39         #endif
  40
  41         }
  42
  43         /* Now that everything is setup enable the SDRAM.
  44          * Some chipsets do the work for us while on others
  45          * we need to it by hand.
  46          */
  47         print_debug("Ram3\n");
  48
  49         #if CONFIG_RAMINIT_SYSINFO
  50         sdram_enable(controllers, ctrl, sysinfo);
  51         #else
  52         sdram_enable(controllers, ctrl);
  53         #endif
  54
  55         print_debug("Ram4\n");
  56 }