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MIPS: platform: Allow for DTB to be moved during kernel relocation

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Add plat_fdt_relocated(void*) API to allow the kernel relocation code to
update platform's information about the DTB location if the DTB had to
be moved due to being placed in a location used by the relocated kernel.

Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14611/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Marcin Nowakowski
2016-11-23 14:43:47 +01:00
committed by Ralf Baechle
parent 73346081ca
commit 0063fdede6
2 changed files with 26 additions and 0 deletions
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13
arch/mips/generic/init.c
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@@ -88,6 +88,19 @@ void __init *plat_get_fdt(void)
return (void *)fdt;
}
void __init plat_fdt_relocated(void *new_location)
{
/*
* reset fdt as the cached value would point to the location
* before relocations happened and update the location argument
* if it was passed using UHI
*/
fdt = NULL;
if (fw_arg0 == -2)
fw_arg1 = (unsigned long)new_location;
}
void __init plat_mem_setup(void)
{
if (mach && mach->fixup_fdt)