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MIPS: generic: Abstract FDT fixup application

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Introduce an apply_mips_fdt_fixups() function which can apply fixups to
an FDT based upon an array of fixup descriptions. This abstracts that
functionality such that legacy board code can apply FDT fixups without
requiring lots of duplication.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16184/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Paul Burton
2017-06-02 12:29:54 -07:00
committed by Ralf Baechle
parent c3d62fc6a0
commit e889dfca12
3 changed files with 69 additions and 22 deletions
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27
arch/mips/generic/init.c
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@@ -122,6 +122,33 @@ void __init device_tree_init(void)
err = register_up_smp_ops();
}
int __init apply_mips_fdt_fixups(void *fdt_out, size_t fdt_out_size,
const void *fdt_in,
const struct mips_fdt_fixup *fixups)
{
int err;
err = fdt_open_into(fdt_in, fdt_out, fdt_out_size);
if (err) {
pr_err("Failed to open FDT\n");
return err;
}
for (; fixups->apply; fixups++) {
err = fixups->apply(fdt_out);
if (err) {
pr_err("Failed to apply FDT fixup \"%s\"\n",
fixups->description);
return err;
}
}
err = fdt_pack(fdt_out);
if (err)
pr_err("Failed to pack FDT\n");
return err;
}
void __init plat_time_init(void)
{
struct device_node *np;