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mips: octeon: convert to use unflatten_and_copy_device_tree 

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@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Tested-by: Grant Likely <grant.likely@linaro.org>
This commit is contained in:
Rob Herring 2014-04-02 17:45:06 -05:00
parent a798c10faf
commit 8c97cec990
1 changed files with 5 additions and 15 deletions
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20
arch/mips/cavium-octeon/setup.c
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@ -1053,36 +1053,26 @@ void prom_free_prom_memory(void)
int octeon_prune_device_tree(void); int octeon_prune_device_tree(void);
extern const char __dtb_octeon_3xxx_begin; extern const char __dtb_octeon_3xxx_begin;
extern const char __dtb_octeon_3xxx_end;
extern const char __dtb_octeon_68xx_begin; extern const char __dtb_octeon_68xx_begin;
extern const char __dtb_octeon_68xx_end;
void __init device_tree_init(void) void __init device_tree_init(void)
{ {
int dt_size; const void *fdt;
struct boot_param_header *fdt;
bool do_prune; bool do_prune;
if (octeon_bootinfo->minor_version >= 3 && octeon_bootinfo->fdt_addr) { if (octeon_bootinfo->minor_version >= 3 && octeon_bootinfo->fdt_addr) {
fdt = phys_to_virt(octeon_bootinfo->fdt_addr); fdt = phys_to_virt(octeon_bootinfo->fdt_addr);
if (fdt_check_header(fdt)) if (fdt_check_header(fdt))
panic("Corrupt Device Tree passed to kernel."); panic("Corrupt Device Tree passed to kernel.");
dt_size = be32_to_cpu(fdt->totalsize);
do_prune = false; do_prune = false;
} else if (OCTEON_IS_MODEL(OCTEON_CN68XX)) { } else if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
fdt = (struct boot_param_header *)&__dtb_octeon_68xx_begin; fdt = &__dtb_octeon_68xx_begin;
dt_size = &__dtb_octeon_68xx_end - &__dtb_octeon_68xx_begin;
do_prune = true; do_prune = true;
} else { } else {
fdt = (struct boot_param_header *)&__dtb_octeon_3xxx_begin; fdt = &__dtb_octeon_3xxx_begin;
dt_size = &__dtb_octeon_3xxx_end - &__dtb_octeon_3xxx_begin;
do_prune = true; do_prune = true;
} }
/* Copy the default tree from init memory. */ initial_boot_params = (void *)fdt;
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);
if (do_prune) { if (do_prune) {
octeon_prune_device_tree(); octeon_prune_device_tree();
@ -1090,7 +1080,7 @@ void __init device_tree_init(void)
} else { } else {
pr_info("Using passed Device Tree.\n"); pr_info("Using passed Device Tree.\n");
} }
unflatten_device_tree(); unflatten_and_copy_device_tree();
} }
static int __initdata disable_octeon_edac_p; static int __initdata disable_octeon_edac_p;