target/linux/brcm-2.4/files/arch/mips/bcm947xx/prom.c

   1 /*
   2  * Early initialization code for BCM94710 boards
   3  *
   4  * Copyright 2004, Broadcom Corporation
   5  * All Rights Reserved.
   6  *
   7  * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
   8  * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
   9  * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
  10  * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
  11  *
  12  */
  13
  14 #include <linux/config.h>
  15 #include <linux/init.h>
  16 #include <linux/kernel.h>
  17 #include <linux/types.h>
  18 #include <asm/bootinfo.h>
  19
  20 void __init
  21 prom_init(int argc, const char **argv)
  22 {
  23         unsigned long mem;
  24
  25         mips_machgroup = MACH_GROUP_BRCM;
  26         mips_machtype = MACH_BCM947XX;
  27
  28         /* Figure out memory size by finding aliases */
  29         for (mem = (1 << 20); mem < (128 << 20); mem += (1 << 20)) {
  30                 if (*(unsigned long *)((unsigned long)(prom_init) + mem) ==
  31                     *(unsigned long *)(prom_init))
  32                         break;
  33         }
  34         add_memory_region(0, mem, BOOT_MEM_RAM);
  35 }
  36
  37 void __init
  38 prom_free_prom_memory(void)
  39 {
  40 }