#include <linux/bootmem.h>
#include <linux/pfn.h>
#include <linux/suspend.h>
+#include <linux/acpi.h>
#include <linux/firmware-map.h>
+#include <linux/memblock.h>
#include <asm/e820.h>
#include <asm/proto.h>
#endif
/*
- * Find a free area with specified alignment in a specific range.
- */
-u64 __init find_e820_area(u64 start, u64 end, u64 size, u64 align)
-{
- int i;
-
- for (i = 0; i < e820.nr_map; i++) {
- struct e820entry *ei = &e820.map[i];
- u64 addr;
- u64 ei_start, ei_last;
-
- if (ei->type != E820_RAM)
- continue;
-
- ei_last = ei->addr + ei->size;
- ei_start = ei->addr;
- addr = find_early_area(ei_start, ei_last, start, end,
- size, align);
-
- if (addr != -1ULL)
- return addr;
- }
- return -1ULL;
-}
-
-u64 __init find_fw_memmap_area(u64 start, u64 end, u64 size, u64 align)
-{
- return find_e820_area(start, end, size, align);
-}
-
-u64 __init get_max_mapped(void)
-{
- u64 end = max_pfn_mapped;
-
- end <<= PAGE_SHIFT;
-
- return end;
-}
-/*
- * Find next free range after *start
- */
-u64 __init find_e820_area_size(u64 start, u64 *sizep, u64 align)
-{
- int i;
-
- for (i = 0; i < e820.nr_map; i++) {
- struct e820entry *ei = &e820.map[i];
- u64 addr;
- u64 ei_start, ei_last;
-
- if (ei->type != E820_RAM)
- continue;
-
- ei_last = ei->addr + ei->size;
- ei_start = ei->addr;
- addr = find_early_area_size(ei_start, ei_last, start,
- sizep, align);
-
- if (addr != -1ULL)
- return addr;
- }
-
- return -1ULL;
-}
-
-/*
- * pre allocated 4k and reserved it in e820
+ * pre allocated 4k and reserved it in memblock and e820_saved
*/
u64 __init early_reserve_e820(u64 startt, u64 sizet, u64 align)
{
u64 start;
for (start = startt; ; start += size) {
- start = find_e820_area_size(start, &size, align);
- if (!(start + 1))
+ start = memblock_x86_find_in_range_size(start, &size, align);
+ if (start == MEMBLOCK_ERROR)
return 0;
if (size >= sizet)
break;
addr = round_down(start + size - sizet, align);
if (addr < start)
return 0;
- e820_update_range(addr, sizet, E820_RAM, E820_RESERVED);
+ memblock_x86_reserve_range(addr, addr + sizet, "new next");
e820_update_range_saved(addr, sizet, E820_RAM, E820_RESERVED);
- printk(KERN_INFO "update e820 for early_reserve_e820\n");
- update_e820();
+ printk(KERN_INFO "update e820_saved for early_reserve_e820\n");
update_e820_saved();
return addr;
{
return e820_end_pfn(1UL<<(32 - PAGE_SHIFT), E820_RAM);
}
-/*
- * Finds an active region in the address range from start_pfn to last_pfn and
- * returns its range in ei_startpfn and ei_endpfn for the e820 entry.
- */
-int __init e820_find_active_region(const struct e820entry *ei,
- unsigned long start_pfn,
- unsigned long last_pfn,
- unsigned long *ei_startpfn,
- unsigned long *ei_endpfn)
-{
- u64 align = PAGE_SIZE;
-
- *ei_startpfn = round_up(ei->addr, align) >> PAGE_SHIFT;
- *ei_endpfn = round_down(ei->addr + ei->size, align) >> PAGE_SHIFT;
-
- /* Skip map entries smaller than a page */
- if (*ei_startpfn >= *ei_endpfn)
- return 0;
-
- /* Skip if map is outside the node */
- if (ei->type != E820_RAM || *ei_endpfn <= start_pfn ||
- *ei_startpfn >= last_pfn)
- return 0;
-
- /* Check for overlaps */
- if (*ei_startpfn < start_pfn)
- *ei_startpfn = start_pfn;
- if (*ei_endpfn > last_pfn)
- *ei_endpfn = last_pfn;
-
- return 1;
-}
-
-/* Walk the e820 map and register active regions within a node */
-void __init e820_register_active_regions(int nid, unsigned long start_pfn,
- unsigned long last_pfn)
-{
- unsigned long ei_startpfn;
- unsigned long ei_endpfn;
- int i;
-
- for (i = 0; i < e820.nr_map; i++)
- if (e820_find_active_region(&e820.map[i],
- start_pfn, last_pfn,
- &ei_startpfn, &ei_endpfn))
- add_active_range(nid, ei_startpfn, ei_endpfn);
-}
-
-/*
- * Find the hole size (in bytes) in the memory range.
- * @start: starting address of the memory range to scan
- * @end: ending address of the memory range to scan
- */
-u64 __init e820_hole_size(u64 start, u64 end)
-{
- unsigned long start_pfn = start >> PAGE_SHIFT;
- unsigned long last_pfn = end >> PAGE_SHIFT;
- unsigned long ei_startpfn, ei_endpfn, ram = 0;
- int i;
-
- for (i = 0; i < e820.nr_map; i++) {
- if (e820_find_active_region(&e820.map[i],
- start_pfn, last_pfn,
- &ei_startpfn, &ei_endpfn))
- ram += ei_endpfn - ei_startpfn;
- }
- return end - start - ((u64)ram << PAGE_SHIFT);
-}
static void early_panic(char *msg)
{
printk(KERN_INFO "BIOS-provided physical RAM map:\n");
e820_print_map(who);
}
+
+void __init memblock_x86_fill(void)
+{
+ int i;
+ u64 end;
+
+ /*
+ * EFI may have more than 128 entries
+ * We are safe to enable resizing, beause memblock_x86_fill()
+ * is rather later for x86
+ */
+ memblock_can_resize = 1;
+
+ for (i = 0; i < e820.nr_map; i++) {
+ struct e820entry *ei = &e820.map[i];
+
+ end = ei->addr + ei->size;
+ if (end != (resource_size_t)end)
+ continue;
+
+ if (ei->type != E820_RAM && ei->type != E820_RESERVED_KERN)
+ continue;
+
+ memblock_add(ei->addr, ei->size);
+ }
+
+ memblock_analyze();
+ memblock_dump_all();
+}
+
+void __init memblock_find_dma_reserve(void)
+{
+#ifdef CONFIG_X86_64
+ u64 free_size_pfn;
+ u64 mem_size_pfn;
+ /*
+ * need to find out used area below MAX_DMA_PFN
+ * need to use memblock to get free size in [0, MAX_DMA_PFN]
+ * at first, and assume boot_mem will not take below MAX_DMA_PFN
+ */
+ mem_size_pfn = memblock_x86_memory_in_range(0, MAX_DMA_PFN << PAGE_SHIFT) >> PAGE_SHIFT;
+ free_size_pfn = memblock_x86_free_memory_in_range(0, MAX_DMA_PFN << PAGE_SHIFT) >> PAGE_SHIFT;
+ set_dma_reserve(mem_size_pfn - free_size_pfn);
+#endif
+}
projects / mv-sheeva.git / blobdiff