diff options
Diffstat (limited to 'arch/mips/mips-boards/generic/memory.c')
| -rw-r--r-- | arch/mips/mips-boards/generic/memory.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/arch/mips/mips-boards/generic/memory.c b/arch/mips/mips-boards/generic/memory.c deleted file mode 100644 index 5e443bba566..00000000000 --- a/arch/mips/mips-boards/generic/memory.c +++ /dev/null @@ -1,183 +0,0 @@ -/* - * Carsten Langgaard, carstenl@mips.com - * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. - * - * This program is free software; you can distribute it and/or modify it - * under the terms of the GNU General Public License (Version 2) as - * published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - * - * PROM library functions for acquiring/using memory descriptors given to - * us from the YAMON. - */ -#include <linux/init.h> -#include <linux/mm.h> -#include <linux/bootmem.h> -#include <linux/pfn.h> -#include <linux/string.h> - -#include <asm/bootinfo.h> -#include <asm/page.h> -#include <asm/sections.h> - -#include <asm/mips-boards/prom.h> - -/*#define DEBUG*/ - -enum yamon_memtypes { - yamon_dontuse, - yamon_prom, - yamon_free, -}; -static struct prom_pmemblock mdesc[PROM_MAX_PMEMBLOCKS]; - -#ifdef DEBUG -static char *mtypes[3] = { - "Dont use memory", - "YAMON PROM memory", - "Free memmory", -}; -#endif - -/* determined physical memory size, not overridden by command line args */ -unsigned long physical_memsize = 0L; - -static struct prom_pmemblock * __init prom_getmdesc(void) -{ - char *memsize_str; - unsigned int memsize; - char cmdline[CL_SIZE], *ptr; - - /* otherwise look in the environment */ - memsize_str = prom_getenv("memsize"); - if (!memsize_str) { - printk(KERN_WARNING - "memsize not set in boot prom, set to default (32Mb)\n"); - physical_memsize = 0x02000000; - } else { -#ifdef DEBUG - pr_debug("prom_memsize = %s\n", memsize_str); -#endif - physical_memsize = simple_strtol(memsize_str, NULL, 0); - } - -#ifdef CONFIG_CPU_BIG_ENDIAN - /* SOC-it swaps, or perhaps doesn't swap, when DMA'ing the last - word of physical memory */ - physical_memsize -= PAGE_SIZE; -#endif - - /* Check the command line for a memsize directive that overrides - the physical/default amount */ - strcpy(cmdline, arcs_cmdline); - ptr = strstr(cmdline, "memsize="); - if (ptr && (ptr != cmdline) && (*(ptr - 1) != ' ')) - ptr = strstr(ptr, " memsize="); - - if (ptr) - memsize = memparse(ptr + 8, &ptr); - else - memsize = physical_memsize; - - memset(mdesc, 0, sizeof(mdesc)); - - mdesc[0].type = yamon_dontuse; - mdesc[0].base = 0x00000000; - mdesc[0].size = 0x00001000; - - mdesc[1].type = yamon_prom; - mdesc[1].base = 0x00001000; - mdesc[1].size = 0x000ef000; - -#ifdef CONFIG_MIPS_MALTA - /* - * The area 0x000f0000-0x000fffff is allocated for BIOS memory by the - * south bridge and PCI access always forwarded to the ISA Bus and - * BIOSCS# is always generated. - * This mean that this area can't be used as DMA memory for PCI - * devices. - */ - mdesc[2].type = yamon_dontuse; - mdesc[2].base = 0x000f0000; - mdesc[2].size = 0x00010000; -#else - mdesc[2].type = yamon_prom; - mdesc[2].base = 0x000f0000; - mdesc[2].size = 0x00010000; -#endif - - mdesc[3].type = yamon_dontuse; - mdesc[3].base = 0x00100000; - mdesc[3].size = CPHYSADDR(PFN_ALIGN((unsigned long)&_end)) - mdesc[3].base; - - mdesc[4].type = yamon_free; - mdesc[4].base = CPHYSADDR(PFN_ALIGN(&_end)); - mdesc[4].size = memsize - mdesc[4].base; - - return &mdesc[0]; -} - -static int __init prom_memtype_classify(unsigned int type) -{ - switch (type) { - case yamon_free: - return BOOT_MEM_RAM; - case yamon_prom: - return BOOT_MEM_ROM_DATA; - default: - return BOOT_MEM_RESERVED; - } -} - -void __init prom_meminit(void) -{ - struct prom_pmemblock *p; - -#ifdef DEBUG - pr_debug("YAMON MEMORY DESCRIPTOR dump:\n"); - p = prom_getmdesc(); - while (p->size) { - int i = 0; - pr_debug("[%d,%p]: base<%08lx> size<%08lx> type<%s>\n", - i, p, p->base, p->size, mtypes[p->type]); - p++; - i++; - } -#endif - p = prom_getmdesc(); - - while (p->size) { - long type; - unsigned long base, size; - - type = prom_memtype_classify(p->type); - base = p->base; - size = p->size; - - add_memory_region(base, size, type); - p++; - } -} - -void __init prom_free_prom_memory(void) -{ - unsigned long addr; - int i; - - for (i = 0; i < boot_mem_map.nr_map; i++) { - if (boot_mem_map.map[i].type != BOOT_MEM_ROM_DATA) - continue; - - addr = boot_mem_map.map[i].addr; - free_init_pages("prom memory", - addr, addr + boot_mem_map.map[i].size); - } -} |