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/init.h>
  15 #include <linux/mm.h>
  16 #include <linux/sched.h>
  17 #include <linux/bootmem.h>
  18
  19 #include <asm/addrspace.h>
  20 #include <asm/bootinfo.h>
  21 #include <asm/pmon.h>
  22 #include <asm/gt64240.h>
  23
  24 #include "ocelot_pld.h"
  25
  26 struct callvectors* debug_vectors;
  27
  28 extern unsigned long marvell_base;
  29 extern unsigned long bus_clock;
  30
  31 #ifdef CONFIG_GALILEO_GT64240_ETH
  32 extern unsigned char prom_mac_addr_base[6];
  33 #endif
  34
  35 const char *get_system_type(void)
  36 {
  37         return "Momentum Ocelot";
  38 }
  39
  40 void __init prom_init(void)
  41 {
  42         int argc = fw_arg0;
  43         char **arg = (char **) fw_arg1;
  44         char **env = (char **) fw_arg2;
  45         struct callvectors *cv = (struct callvectors *) fw_arg3;
  46         int i;
  47
  48         /* save the PROM vectors for debugging use */
  49         debug_vectors = cv;
  50
  51         /* arg[0] is "g", the rest is boot parameters */
  52         arcs_cmdline[0] = '\0';
  53         for (i = 1; i < argc; i++) {
  54                 if (strlen(arcs_cmdline) + strlen(arg[i] + 1)
  55                     >= sizeof(arcs_cmdline))
  56                         break;
  57                 strcat(arcs_cmdline, arg[i]);
  58                 strcat(arcs_cmdline, " ");
  59         }
  60
  61         mips_machgroup = MACH_GROUP_MOMENCO;
  62         mips_machtype = MACH_MOMENCO_OCELOT_G;
  63
  64 #ifdef CONFIG_GALILEO_GT64240_ETH
  65         /* get the base MAC address for on-board ethernet ports */
  66         memcpy(prom_mac_addr_base, (void*)0xfc807cf2, 6);
  67 #endif
  68
  69         while (*env) {
  70                 if (strncmp("gtbase", *env, strlen("gtbase")) == 0) {
  71                         marvell_base = simple_strtol(*env + strlen("gtbase="),
  72                                                         NULL, 16);
  73                 }
  74                 if (strncmp("busclock", *env, strlen("busclock")) == 0) {
  75                         bus_clock = simple_strtol(*env + strlen("busclock="),
  76                                                         NULL, 10);
  77                 }
  78                 env++;
  79         }
  80 }
  81
  82 unsigned long __init prom_free_prom_memory(void)
  83 {
  84         return 0;
  85 }