forked from Minki/linux
x86: use FDT accessors for FDT blob header data
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>
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060f78c254
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1bac186994
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@ -206,23 +206,21 @@ static void __init dtb_apic_setup(void)
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static void __init x86_flattree_get_config(void)
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{
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u32 size, map_len;
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struct boot_param_header *dt;
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void *dt;
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if (!initial_dtb)
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return;
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map_len = max(PAGE_SIZE - (initial_dtb & ~PAGE_MASK),
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(u64)sizeof(struct boot_param_header));
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map_len = max(PAGE_SIZE - (initial_dtb & ~PAGE_MASK), (u64)128);
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dt = early_memremap(initial_dtb, map_len);
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size = be32_to_cpu(dt->totalsize);
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initial_boot_params = dt = early_memremap(initial_dtb, map_len);
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size = of_get_flat_dt_size();
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if (map_len < size) {
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early_iounmap(dt, map_len);
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dt = early_memremap(initial_dtb, size);
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initial_boot_params = dt = early_memremap(initial_dtb, size);
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map_len = size;
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}
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initial_boot_params = dt;
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unflatten_and_copy_device_tree();
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early_iounmap(dt, map_len);
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}
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