target/linux/aruba-2.6/files/arch/mips/aruba/prom.c

   1 /**************************************************************************
   2  *
   3  *  BRIEF MODULE DESCRIPTION
   4  *     prom interface routines
   5  *
   6  *  Copyright 2004 IDT Inc. (rischelp@idt.com)
   7  *
   8  *  This program is free software; you can redistribute  it and/or modify it
   9  *  under  the terms of  the GNU General  Public License as published by the
  10  *  Free Software Foundation;  either version 2 of the  License, or (at your
  11  *  option) any later version.
  12  *
  13  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  14  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  15  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  16  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  17  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  18  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  19  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  20  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  21  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  22  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  *
  24  *  You should have received a copy of the  GNU General Public License along
  25  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  26  *  675 Mass Ave, Cambridge, MA 02139, USA.
  27  *
  28  *
  29  **************************************************************************
  30  * May 2004 rkt, neb
  31  *
  32  * Initial Release
  33  *
  34  *
  35  *
  36  **************************************************************************
  37  */
  38
  39 #include <linux/autoconf.h>
  40 #include <linux/init.h>
  41 #include <linux/mm.h>
  42 #include <linux/module.h>
  43 #include <linux/string.h>
  44 #include <linux/console.h>
  45 #include <asm/bootinfo.h>
  46 #include <linux/bootmem.h>
  47 #include <linux/ioport.h>
  48 #include <linux/serial.h>
  49 #include <linux/serialP.h>
  50 #include <asm/serial.h>
  51 #include <linux/ioport.h>
  52
  53 unsigned int idt_cpu_freq;
  54 EXPORT_SYMBOL(idt_cpu_freq);
  55
  56 unsigned int arch_has_pci=0;
  57
  58 /* Kernel Boot parameters */
  59 static unsigned char bootparm[] =
  60         "root=/dev/mtdblock1 rootfstype=squashfs,jffs2 noinitrd console=ttyS0,9600 init=/etc/preinit";
  61
  62 extern unsigned long mips_machgroup;
  63 extern unsigned long mips_machtype;
  64
  65 extern void setup_serial_port(void);
  66 extern char * getenv(char *e);
  67
  68 /* IDT 79EB434 memory map -- we really should be auto sizing it */
  69 #define RAM_SIZE        32*1024*1024
  70
  71 char *__init prom_getcmdline(void)
  72 {
  73         return &(arcs_cmdline[0]);
  74 }
  75
  76 void __init prom_init(void)
  77 {
  78         char *boardname;
  79         sprintf(arcs_cmdline, "%s", bootparm);
  80
  81         /* set our arch type */
  82         mips_machgroup = MACH_GROUP_ARUBA;
  83         mips_machtype = MACH_ARUBA_UNKNOWN;
  84
  85         boardname=getenv("boardname");
  86
  87         if (!strcmp(boardname,"Muscat")) {
  88                 mips_machtype = MACH_ARUBA_AP70;
  89                 idt_cpu_freq = 133000000;
  90                 arch_has_pci=1;
  91         } else if (!strcmp(boardname,"Mataro")) {
  92                 mips_machtype = MACH_ARUBA_AP65;
  93                 idt_cpu_freq = 110000000;
  94         } else if (!strcmp(boardname,"Merlot")) {
  95                 mips_machtype = MACH_ARUBA_AP60;
  96                 idt_cpu_freq = 90000000;
  97         }
  98
  99         /* turn on the console */
 100         setup_serial_port();
 101
 102         /*
 103          * give all RAM to boot allocator,
 104          * except where the kernel was loaded
 105          */
 106         add_memory_region(0,RAM_SIZE,BOOT_MEM_RAM);
 107 }
 108
 109 void prom_free_prom_memory(void)
 110 {
 111         printk("stubbed prom_free_prom_memory()\n");
 112 }