target/linux/brcm63xx-2.6/files/arch/mips/bcm963xx/prom.c

   1 /*
   2  Copyright 2004 Broadcom Corp. All Rights Reserved.
   3  Copyright 2007 OpenWrt,org, Florian Fainelli <florian@openwrt.org>
   4
   5  This program is free software; you can distribute it and/or modify it
   6  under the terms of the GNU General Public License (Version 2) as
   7  published by the Free Software Foundation.
   8
   9  This program is distributed in the hope it will be useful, but WITHOUT
  10  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  for more details.
  13
  14  You should have received a copy of the GNU General Public License along
  15  with this program; if not, write to the Free Software Foundation, Inc.,
  16  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  17 */
  18 /*
  19  * prom.c: PROM library initialization code.
  20  *
  21  */
  22 #include <linux/init.h>
  23 #include <linux/mm.h>
  24 #include <linux/sched.h>
  25 #include <linux/bootmem.h>
  26 #include <linux/blkdev.h>
  27
  28 #include <asm/addrspace.h>
  29 #include <asm/bootinfo.h>
  30 #include <asm/cpu.h>
  31 #include <asm/time.h>
  32 #include <asm/mach-bcm963xx/bootloaders.h>
  33 #include <asm/mach-bcm963xx/6348_map_part.h>
  34
  35 #include "../cfe/cfe_private.h"
  36
  37 extern void __init detect_bootloader(void);
  38 extern void serial_init(void);
  39 extern int boot_loader_type;
  40
  41 #define MACH_BCM                    MACH_BCM96348
  42
  43 const char *get_system_type(void)
  44 {
  45         return "Broadcom BCM963xx";
  46 }
  47
  48 void __init prom_init(void)
  49 {
  50         serial_init();
  51
  52         printk("%s prom init\n", get_system_type() );
  53
  54         PERF->IrqMask = 0;
  55
  56         /* Detect the bootloader */
  57         detect_bootloader();
  58
  59         /* Do further initialisations depending on the bootloader */
  60         if (boot_loader_type == BOOT_LOADER_CFE || boot_loader_type == BOOT_LOADER_CFE2) {
  61                 cfe_setup(fw_arg0, fw_arg1, fw_arg2, fw_arg3);
  62         }
  63         /* Register 16MB RAM minus the ADSL SDRAM by default */
  64         add_memory_region(0, (0x01000000 - ADSL_SDRAM_IMAGE_SIZE), BOOT_MEM_RAM);
  65
  66         mips_machgroup = MACH_GROUP_BRCM;
  67         mips_machtype = MACH_BCM;
  68 }
  69
  70 void __init prom_free_prom_memory(void)
  71 {
  72         /* We do not have any memory to free */
  73 }