arch/mips/sgi-ip32/ip32-memory.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2003 Keith M Wesolowski
   7  * Copyright (C) 2005 Ilya A. Volynets (Total Knowledge)
   8  */
   9 #include <linux/types.h>
  10 #include <linux/init.h>
  11 #include <linux/kernel.h>
  12 #include <linux/memblock.h>
  13 #include <linux/mm.h>
  14
  15 #include <asm/ip32/crime.h>
  16 #include <asm/bootinfo.h>
  17 #include <asm/page.h>
  18 #include <asm/sgialib.h>
  19
  20 extern void crime_init(void);
  21
  22 void __init prom_meminit(void)
  23 {
  24         u64 base, size;
  25         int bank;
  26
  27         crime_init();
  28
  29         for (bank=0; bank < CRIME_MAXBANKS; bank++) {
  30                 u64 bankctl = crime->bank_ctrl[bank];
  31                 base = (bankctl & CRIME_MEM_BANK_CONTROL_ADDR) << 25;
  32                 if (bank != 0 && base == 0)
  33                         continue;
  34                 size = (bankctl & CRIME_MEM_BANK_CONTROL_SDRAM_SIZE) ? 128 : 32;
  35                 size <<= 20;
  36                 if (base + size > (256 << 20))
  37                         base += CRIME_HI_MEM_BASE;
  38
  39                 printk("CRIME MC: bank %u base 0x%016Lx size %LuMiB\n",
  40                         bank, base, size >> 20);
  41                 memblock_add(base, size);
  42         }
  43 }