mips: lantiq: copy built-in DTB out of init section

The existing code is buggy because built-in DTBs are in init memory.
Fix this by using the unflatten_and_copy_device_tree function.

This removes all accesses to FDT header data by the arch code.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Tested-by: Grant Likely <grant.likely@linaro.org>

diff --git a/arch/mips/lantiq/prom.c b/arch/mips/lantiq/prom.c
index 19686c5bc5ed03686ef2a2791b7e360fdd68484d..cdea687ad490b0727e88459b3330ca5f15cdfb75 100644 (file)
--- a/arch/mips/lantiq/prom.c
+++ b/arch/mips/lantiq/prom.c
@@ -76,18 +76,7 @@ void __init plat_mem_setup(void)
 
 void __init device_tree_init(void)
 {
-       unsigned long base, size;
-
-       if (!initial_boot_params)
-               return;
-
-       base = virt_to_phys((void *)initial_boot_params);
-       size = be32_to_cpu(initial_boot_params->totalsize);
-
-       /* Before we do anything, lets reserve the dt blob */
-       reserve_bootmem(base, size, BOOTMEM_DEFAULT);
-
-       unflatten_device_tree();
+       unflatten_and_copy_device_tree();
 }
 
 void __init prom_init(void)