David Daney | b01da9f | 2012-07-05 18:12:38 +0200 | [diff] [blame] | 1 | #include <linux/bootmem.h> |
| 2 | #include <linux/init.h> |
| 3 | #include <linux/io.h> |
| 4 | #include <linux/of_fdt.h> |
| 5 | #include <asm/byteorder.h> |
| 6 | |
| 7 | static int __init reserve_mem_mach(unsigned long addr, unsigned long size) |
| 8 | { |
| 9 | return reserve_bootmem(addr, size, BOOTMEM_DEFAULT); |
| 10 | } |
| 11 | |
| 12 | void __init free_mem_mach(unsigned long addr, unsigned long size) |
| 13 | { |
| 14 | return free_bootmem(addr, size); |
| 15 | } |
| 16 | |
| 17 | void __init device_tree_init(void) |
| 18 | { |
| 19 | unsigned long base, size; |
| 20 | |
| 21 | if (!initial_boot_params) |
| 22 | return; |
| 23 | |
| 24 | base = virt_to_phys((void *)initial_boot_params); |
| 25 | size = be32_to_cpu(initial_boot_params->totalsize); |
| 26 | |
| 27 | /* Before we do anything, lets reserve the dt blob */ |
| 28 | reserve_mem_mach(base, size); |
| 29 | |
| 30 | unflatten_device_tree(); |
| 31 | |
| 32 | /* free the space reserved for the dt blob */ |
| 33 | free_mem_mach(base, size); |
| 34 | } |