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MIPS: Octeon: Support APPENDED_DTB

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Use appended DTB when available.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11115/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Aaro Koskinen 2015-09-11 17:46:15 +03:00 committed by Ralf Baechle
parent 87db537da4
commit 651d19fb10
1 changed files with 9 additions and 2 deletions
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11
arch/mips/cavium-octeon/setup.c
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@ -1081,6 +1081,7 @@ void __init prom_free_prom_memory(void)
int octeon_prune_device_tree(void);
extern const char __appended_dtb;
extern const char __dtb_octeon_3xxx_begin;
extern const char __dtb_octeon_68xx_begin;
void __init device_tree_init(void)
@ -1088,11 +1089,19 @@ void __init device_tree_init(void)
const void *fdt;
bool do_prune;
#ifdef CONFIG_MIPS_ELF_APPENDED_DTB
if (!fdt_check_header(&__appended_dtb)) {
fdt = &__appended_dtb;
do_prune = false;
pr_info("Using appended Device Tree.\n");
} else
#endif
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.");
do_prune = false;
pr_info("Using passed Device Tree.\n");
} else if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
fdt = &__dtb_octeon_68xx_begin;
do_prune = true;
@ -1106,8 +1115,6 @@ void __init device_tree_init(void)
if (do_prune) {
octeon_prune_device_tree();
pr_info("Using internal Device Tree.\n");
} else {
pr_info("Using passed Device Tree.\n");
}
unflatten_and_copy_device_tree();
}