asgardius/android_kernel_motorola_sm6225
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x86: use FDT accessors for FDT blob header data

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Remove the direct accesses to FDT header data using accessor
function instead. This makes the code more readable and makes the FDT
blob structure more opaque to the arch code. This also prepares for
removing struct boot_param_header completely.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
Tested-by: Grant Likely <grant.likely@linaro.org>
This commit is contained in:
Rob Herring 2014-03-31 15:17:31 -05:00
parent 060f78c254
commit 1bac186994
1 changed files with 5 additions and 7 deletions
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12
arch/x86/kernel/devicetree.c
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@ -206,23 +206,21 @@ static void __init dtb_apic_setup(void)
static void __init x86_flattree_get_config(void)
{
u32 size, map_len;
struct boot_param_header *dt;
void *dt;
if (!initial_dtb)
return;
map_len = max(PAGE_SIZE - (initial_dtb & ~PAGE_MASK),
(u64)sizeof(struct boot_param_header));
map_len = max(PAGE_SIZE - (initial_dtb & ~PAGE_MASK), (u64)128);
dt = early_memremap(initial_dtb, map_len);
size = be32_to_cpu(dt->totalsize);
initial_boot_params = dt = early_memremap(initial_dtb, map_len);
size = of_get_flat_dt_size();
if (map_len < size) {
early_iounmap(dt, map_len);
dt = early_memremap(initial_dtb, size);
initial_boot_params = dt = early_memremap(initial_dtb, size);
map_len = size;
}
initial_boot_params = dt;
unflatten_and_copy_device_tree();
early_iounmap(dt, map_len);
}