xref: /openbmc/linux/arch/mips/sgi-ip32/ip32-memory.c (revision b2441318)
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 
46 void __init prom_free_prom_memory(void)
47 {
48 }
49