target/linux/ramips/files/arch/mips/ralink/common/setup.c

   1 /*
   2  * Ralink SoC common setup
   3  *
   4  * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
   5  * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 as published
   9  * by the Free Software Foundation.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/init.h>
  14 #include <linux/io.h>
  15
  16 #include <asm/bootinfo.h>
  17 #include <asm/addrspace.h>
  18 #include <asm/mips_machine.h>
  19
  20 #include <asm/mach-ralink/common.h>
  21 #include <asm/mach-ralink/machine.h>
  22 #include <ralink_soc.h>
  23
  24 unsigned char ramips_sys_type[RAMIPS_SYS_TYPE_LEN];
  25 enum ramips_mach_type ramips_mach = RAMIPS_MACH_GENERIC;
  26
  27 const char *get_system_type(void)
  28 {
  29         return ramips_sys_type;
  30 }
  31
  32 static void __init detect_mem_size(void)
  33 {
  34         unsigned long size;
  35
  36         for (size = RALINK_SOC_MEM_SIZE_MIN; size < RALINK_SOC_MEM_SIZE_MAX;
  37              size <<= 1 ) {
  38                 if (!memcmp(detect_mem_size,
  39                             detect_mem_size + size, 1024))
  40                         break;
  41         }
  42
  43         add_memory_region(RALINK_SOC_SDRAM_BASE, size, BOOT_MEM_RAM);
  44 }
  45
  46 void __init plat_mem_setup(void)
  47 {
  48         set_io_port_base(KSEG1);
  49
  50         detect_mem_size();
  51         ramips_soc_setup();
  52 }
  53
  54 static int __init ramips_machine_setup(void)
  55 {
  56         mips_machine_setup(ramips_mach);
  57         return 0;
  58 }
  59
  60 arch_initcall(ramips_machine_setup);
  61
  62 static void __init ramips_generic_init(void)
  63 {
  64 }
  65
  66 MIPS_MACHINE(RAMIPS_MACH_GENERIC, "Generic Ralink board", ramips_generic_init);