arch/mips/momentum/ocelot_g/prom.c

   1 /*
   2  * Copyright 2002 Momentum Computer Inc.
   3  * Author: Matthew Dharm <mdharm@momenco.com>
   4  *
   5  * Based on Ocelot Linux port, which is
   6  * Copyright 2001 MontaVista Software Inc.
   7  * Author: jsun@mvista.com or jsun@junsun.net
   8  *
   9  * This program is free software; you can redistribute  it and/or modify it
  10  * under  the terms of  the GNU General  Public License as published by the
  11  * Free Software Foundation;  either version 2 of the  License, or (at your
  12  * option) any later version.
  13  */
  14 #include <linux/config.h>
  15 #include <linux/init.h>
  16 #include <linux/mm.h>
  17 #include <linux/sched.h>
  18 #include <linux/bootmem.h>
  19
  20 #include <asm/addrspace.h>
  21 #include <asm/bootinfo.h>
  22 #include <asm/pmon.h>
  23 #include <asm/gt64240.h>
  24
  25 #include "ocelot_pld.h"
  26
  27 struct callvectors* debug_vectors;
  28
  29 extern unsigned long marvell_base;
  30 extern unsigned long bus_clock;
  31
  32 #ifdef CONFIG_GALILLEO_GT64240_ETH
  33 extern unsigned char prom_mac_addr_base[6];
  34 #endif
  35
  36 const char *get_system_type(void)
  37 {
  38         return "Momentum Ocelot";
  39 }
  40
  41 void __init prom_init(void)
  42 {
  43         int argc = fw_arg0;
  44         char **arg = (char **) fw_arg1;
  45         char **env = (char **) fw_arg2;
  46         struct callvectors *cv = (struct callvectors *) fw_arg3;
  47         int i;
  48
  49         /* save the PROM vectors for debugging use */
  50         debug_vectors = cv;
  51
  52         /* arg[0] is "g", the rest is boot parameters */
  53         arcs_cmdline[0] = '\0';
  54         for (i = 1; i < argc; i++) {
  55                 if (strlen(arcs_cmdline) + strlen(arg[i] + 1)
  56                     >= sizeof(arcs_cmdline))
  57                         break;
  58                 strcat(arcs_cmdline, arg[i]);
  59                 strcat(arcs_cmdline, " ");
  60         }
  61
  62         mips_machgroup = MACH_GROUP_MOMENCO;
  63         mips_machtype = MACH_MOMENCO_OCELOT_G;
  64
  65 #ifdef CONFIG_GALILLEO_GT64240_ETH
  66         /* get the base MAC address for on-board ethernet ports */
  67         memcpy(prom_mac_addr_base, (void*)0xfc807cf2, 6);
  68 #endif
  69
  70         while (*env) {
  71                 if (strncmp("gtbase", *env, strlen("gtbase")) == 0) {
  72                         marvell_base = simple_strtol(*env + strlen("gtbase="),
  73                                                         NULL, 16);
  74                 }
  75                 if (strncmp("busclock", *env, strlen("busclock")) == 0) {
  76                         bus_clock = simple_strtol(*env + strlen("busclock="),
  77                                                         NULL, 10);
  78                 }
  79                 env++;
  80         }
  81 }
  82
  83 unsigned long __init prom_free_prom_memory(void)
  84 {
  85         return 0;
  86 }