* PROM library functions for acquiring/using memory descriptors given to
* us from the YAMON.
*/
-#include <linux/config.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/bootmem.h>
};
#endif
+/* determined physical memory size, not overridden by command line args */
+unsigned long physical_memsize = 0L;
+
struct prom_pmemblock * __init prom_getmdesc(void)
{
char *memsize_str;
unsigned int memsize;
char cmdline[CL_SIZE], *ptr;
- /* Check the command line first for a memsize directive */
- 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 {
- /* otherwise look in the environment */
- memsize_str = prom_getenv("memsize");
- if (!memsize_str) {
- prom_printf("memsize not set in boot prom, set to default (32Mb)\n");
- memsize = 0x02000000;
- } else {
+ /* 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
- prom_printf("prom_memsize = %s\n", memsize_str);
+ pr_debug("prom_memsize = %s\n", memsize_str);
#endif
- memsize = simple_strtol(memsize_str, NULL, 0);
- }
+ 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
- */
- memsize -= PAGE_SIZE;
+ /* 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;
return &mdesc[0];
}
-static int __init prom_memtype_classify (unsigned int type)
+static int __init prom_memtype_classify(unsigned int type)
{
switch (type) {
case yamon_free:
struct prom_pmemblock *p;
#ifdef DEBUG
- prom_printf("YAMON MEMORY DESCRIPTOR dump:\n");
+ pr_debug("YAMON MEMORY DESCRIPTOR dump:\n");
p = prom_getmdesc();
while (p->size) {
int i = 0;
- prom_printf("[%d,%p]: base<%08lx> size<%08lx> type<%s>\n",
- i, p, p->base, p->size, mtypes[p->type]);
+ pr_debug("[%d,%p]: base<%08lx> size<%08lx> type<%s>\n",
+ i, p, p->base, p->size, mtypes[p->type]);
p++;
i++;
}
long type;
unsigned long base, size;
- type = prom_memtype_classify (p->type);
+ type = prom_memtype_classify(p->type);
base = p->base;
size = p->size;
}
}
-unsigned long __init prom_free_prom_memory(void)
+void __init prom_free_prom_memory(void)
{
- unsigned long freed = 0;
unsigned long addr;
int i;
continue;
addr = boot_mem_map.map[i].addr;
- while (addr < boot_mem_map.map[i].addr
- + boot_mem_map.map[i].size) {
- ClearPageReserved(virt_to_page(__va(addr)));
- init_page_count(virt_to_page(__va(addr)));
- free_page((unsigned long)__va(addr));
- addr += PAGE_SIZE;
- freed += PAGE_SIZE;
- }
+ free_init_pages("prom memory",
+ addr, addr + boot_mem_map.map[i].size);
}
- printk("Freeing prom memory: %ldkb freed\n", freed >> 10);
-
- return freed;
}