aboutsummaryrefslogtreecommitdiff
path: root/arch/mips/kernel/setup.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/kernel/setup.c')
-rw-r--r--arch/mips/kernel/setup.c43
1 files changed, 39 insertions, 4 deletions
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index b1cb8f87d7b..058e964e730 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -122,6 +122,9 @@ static void __init print_memory_map(void)
case BOOT_MEM_RAM:
printk(KERN_CONT "(usable)\n");
break;
+ case BOOT_MEM_INIT_RAM:
+ printk(KERN_CONT "(usable after init)\n");
+ break;
case BOOT_MEM_ROM_DATA:
printk(KERN_CONT "(ROM data)\n");
break;
@@ -362,15 +365,24 @@ static void __init bootmem_init(void)
for (i = 0; i < boot_mem_map.nr_map; i++) {
unsigned long start, end, size;
+ start = PFN_UP(boot_mem_map.map[i].addr);
+ end = PFN_DOWN(boot_mem_map.map[i].addr
+ + boot_mem_map.map[i].size);
+
/*
* Reserve usable memory.
*/
- if (boot_mem_map.map[i].type != BOOT_MEM_RAM)
+ switch (boot_mem_map.map[i].type) {
+ case BOOT_MEM_RAM:
+ break;
+ case BOOT_MEM_INIT_RAM:
+ memory_present(0, start, end);
continue;
+ default:
+ /* Not usable memory */
+ continue;
+ }
- start = PFN_UP(boot_mem_map.map[i].addr);
- end = PFN_DOWN(boot_mem_map.map[i].addr
- + boot_mem_map.map[i].size);
/*
* We are rounding up the start address of usable memory
* and at the end of the usable range downwards.
@@ -456,11 +468,33 @@ early_param("mem", early_parse_mem);
static void __init arch_mem_init(char **cmdline_p)
{
+ phys_t init_mem, init_end, init_size;
+
extern void plat_mem_setup(void);
/* call board setup routine */
plat_mem_setup();
+ init_mem = PFN_UP(__pa_symbol(&__init_begin)) << PAGE_SHIFT;
+ init_end = PFN_DOWN(__pa_symbol(&__init_end)) << PAGE_SHIFT;
+ init_size = init_end - init_mem;
+ if (init_size) {
+ /* Make sure it is in the boot_mem_map */
+ int i, found;
+ found = 0;
+ for (i = 0; i < boot_mem_map.nr_map; i++) {
+ if (init_mem >= boot_mem_map.map[i].addr &&
+ init_mem < (boot_mem_map.map[i].addr +
+ boot_mem_map.map[i].size)) {
+ found = 1;
+ break;
+ }
+ }
+ if (!found)
+ add_memory_region(init_mem, init_size,
+ BOOT_MEM_INIT_RAM);
+ }
+
pr_info("Determined physical RAM map:\n");
print_memory_map();
@@ -524,6 +558,7 @@ static void __init resource_init(void)
res = alloc_bootmem(sizeof(struct resource));
switch (boot_mem_map.map[i].type) {
case BOOT_MEM_RAM:
+ case BOOT_MEM_INIT_RAM:
case BOOT_MEM_ROM_DATA:
res->name = "System RAM";
break;