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

   1 /*
   2 <:copyright-gpl
   3  Copyright 2004 Broadcom Corp. All Rights Reserved.
   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 /*
  20  * prom.c: PROM library initialization code.
  21  *
  22  */
  23 #include <linux/init.h>
  24 #include <linux/mm.h>
  25 #include <linux/sched.h>
  26 #include <linux/bootmem.h>
  27 #include <linux/blkdev.h>
  28 #include <asm/addrspace.h>
  29 #include <asm/bootinfo.h>
  30 #include <asm/cpu.h>
  31 #include <asm/time.h>
  32
  33 #include <bcm_map_part.h>
  34 #include <board.h>
  35 #include "boardparms.h"
  36 #include "softdsl/AdslCoreDefs.h"
  37
  38
  39 //char arcs_cmdline[CL_SIZE] __initdata = {0};
  40 /* inv_xde */
  41 int boot_loader_type;
  42 int prom_argc;
  43 char **prom_argv, **prom_envp;
  44
  45 extern int  do_syslog(int, char *, int);
  46 extern void serial_init(void);
  47 extern void __init InitNvramInfo( void );
  48 extern void kerSysFlashInit( void );
  49 extern unsigned long get_nvram_start_addr(void);
  50 void __init create_root_nfs_cmdline( char *cmdline );
  51
  52 #define MACH_BCM                    MACH_BCM96348
  53
  54 const char *get_system_type(void)
  55 {
  56     /*PNVRAM_DATA pNvramData = (PNVRAM_DATA) get_nvram_start_addr();
  57
  58     return( pNvramData->szBoardId );*/
  59     return "brcm63xx";
  60 }
  61
  62 unsigned long getMemorySize(void)
  63 {
  64     unsigned long ulSdramType = BOARD_SDRAM_TYPE;
  65
  66     unsigned long ulSdramSize;
  67
  68     switch( ulSdramType )
  69     {
  70     case BP_MEMORY_16MB_1_CHIP:
  71     case BP_MEMORY_16MB_2_CHIP:
  72         ulSdramSize = 16 * 1024 * 1024;
  73         break;
  74     case BP_MEMORY_32MB_1_CHIP:
  75     case BP_MEMORY_32MB_2_CHIP:
  76         ulSdramSize = 32 * 1024 * 1024;
  77         break;
  78     case BP_MEMORY_64MB_2_CHIP:
  79         ulSdramSize = 64 * 1024 * 1024;
  80         break;
  81     default:
  82         ulSdramSize = 8 * 1024 * 1024;
  83         break;
  84     }
  85     if (boot_loader_type == BOOT_CFE)
  86       return ulSdramSize;
  87     else
  88       // assume that there is one contiguous memory map
  89       return boot_mem_map.map[0].size;
  90 }
  91
  92 /* --------------------------------------------------------------------------
  93     Name: prom_init
  94  -------------------------------------------------------------------------- */
  95 void __init prom_init(void)
  96 {
  97     extern ulong r4k_interval;
  98
  99     serial_init();
 100
 101     prom_argc = fw_arg0;
 102     prom_argv = (char **) fw_arg1;
 103     prom_envp = (char **) fw_arg2;
 104
 105     if ((prom_argv > 0x80000000) && (prom_argv < 0x82000000)) {
 106       strncpy(arcs_cmdline, prom_argv[1], CL_SIZE);
 107     }
 108
 109     if (strncmp(arcs_cmdline, "boot_loader=RedBoot", 19) != 0) {
 110       boot_loader_type =  BOOT_CFE;
 111     }
 112     else {
 113       boot_loader_type = BOOT_REDBOOT;
 114     }
 115
 116     do_syslog(8, NULL, 8);
 117
 118     printk( "%s prom init\n", get_system_type() );
 119
 120     PERF->IrqMask = 0;
 121
 122     arcs_cmdline[0] = '\0';
 123
 124        if (boot_loader_type == BOOT_CFE)
 125       add_memory_region(0, (getMemorySize() - ADSL_SDRAM_IMAGE_SIZE), BOOT_MEM_RAM);
 126     else
 127        add_memory_region(0, (0x01000000 - ADSL_SDRAM_IMAGE_SIZE), BOOT_MEM_RAM);
 128
 129     mips_machgroup = MACH_GROUP_BRCM;
 130     mips_machtype = MACH_BCM;
 131
 132        BpSetBoardId("96348GW-10");
 133 }
 134
 135 /* --------------------------------------------------------------------------
 136     Name: prom_free_prom_memory
 137 Abstract:
 138  -------------------------------------------------------------------------- */
 139 void __init prom_free_prom_memory(void)
 140 {
 141
 142 }
 143