* 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>
-#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>
};
#endif
-/* determined physical memory size, not overridden by command line args */
-unsigned long physical_memsize = 0L;
+/* References to section boundaries */
+extern char _end;
+
+#define PFN_ALIGN(x) (((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
+
struct prom_pmemblock * __init prom_getmdesc(void)
{
unsigned int memsize;
char cmdline[CL_SIZE], *ptr;
- /* 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");
- physical_memsize = 0x02000000;
- } else {
-#ifdef DEBUG
- prom_printf("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 */
+ /* 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)
+ if (ptr) {
memsize = memparse(ptr + 8, &ptr);
- else
- memsize = physical_memsize;
-
+ }
+ 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 {
+#ifdef DEBUG
+ prom_printf("prom_memsize = %s\n", memsize_str);
+#endif
+ memsize = simple_strtol(memsize_str, NULL, 0);
+ }
+ }
memset(mdesc, 0, sizeof(mdesc));
mdesc[0].type = yamon_dontuse;
mdesc[3].type = yamon_dontuse;
mdesc[3].base = 0x00100000;
- mdesc[3].size = CPHYSADDR(PFN_ALIGN((unsigned long)&_end)) - mdesc[3].base;
+ mdesc[3].size = CPHYSADDR(PFN_ALIGN(&_end)) - mdesc[3].base;
mdesc[4].type = yamon_free;
mdesc[4].base = CPHYSADDR(PFN_ALIGN(&_end));
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)));
+ set_page_count(virt_to_page(__va(addr)), 1);
free_page((unsigned long)__va(addr));
addr += PAGE_SIZE;
freed += PAGE_SIZE;