From: Rob Herring <robh@xxxxxxxxxx>
The octeon FDT code can be simplified by using
unflatten_and_copy_device_tree function. This removes all accesses to
FDT header data by the arch code.
Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
---
arch/mips/cavium-octeon/setup.c | 18 +++++-------------
1 file changed, 5 insertions(+), 13 deletions(-)
diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c
index 331b837..0b27411 100644
--- a/arch/mips/cavium-octeon/setup.c
+++ b/arch/mips/cavium-octeon/setup.c
@@ -1058,31 +1058,23 @@ extern const char __dtb_octeon_68xx_begin;
extern const char __dtb_octeon_68xx_end;
void __init device_tree_init(void)
{
- int dt_size;
- struct boot_param_header *fdt;
+ void *fdt;
bool do_prune;
if (octeon_bootinfo->minor_version >= 3 && octeon_bootinfo->fdt_addr) {
fdt = phys_to_virt(octeon_bootinfo->fdt_addr);
if (fdt_check_header(fdt))
panic("Corrupt Device Tree passed to kernel.");
- dt_size = be32_to_cpu(fdt->totalsize);
do_prune = false;
} else if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
- fdt = (struct boot_param_header *)&__dtb_octeon_68xx_begin;
- dt_size = &__dtb_octeon_68xx_end - &__dtb_octeon_68xx_begin;
+ fdt = &__dtb_octeon_68xx_begin;
do_prune = true;
} else {
- fdt = (struct boot_param_header *)&__dtb_octeon_3xxx_begin;
- dt_size = &__dtb_octeon_3xxx_end - &__dtb_octeon_3xxx_begin;
+ fdt = &__dtb_octeon_3xxx_begin;
do_prune = true;
}
- /* Copy the default tree from init memory. */
- initial_boot_params = early_init_dt_alloc_memory_arch(dt_size, 8);
- if (initial_boot_params == NULL)
- panic("Could not allocate initial_boot_params");
- memcpy(initial_boot_params, fdt, dt_size);
+ initial_boot_params = fdt;
if (do_prune) {
octeon_prune_device_tree();
@@ -1090,7 +1082,7 @@ void __init device_tree_init(void)
} else {
pr_info("Using passed Device Tree.\n");
}
- unflatten_device_tree();
+ unflatten_and_copy_device_tree();
}
static int __initdata disable_octeon_edac_p;
--
1.8.3.2
