Linux Kernel  3.7.1
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ip32-memory.c
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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/mm.h>
13 
14 #include <asm/ip32/crime.h>
15 #include <asm/bootinfo.h>
16 #include <asm/page.h>
17 #include <asm/pgtable.h>
18 #include <asm/pgalloc.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  add_memory_region(base, size, BOOT_MEM_RAM);
42  }
43 }
44 
45 
47 {
48 }