Messages in this thread |  | | Date | Tue, 9 Feb 2021 16:38:43 +0100 | From | Thomas Bogendoerfer <> | Subject | Re: [PATCH 2/6] MIPS: Loongson64: Distinguish firmware dependencies DTB/LEFI. |
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On Tue, Feb 09, 2021 at 05:32:20PM +0800, Qing Zhang wrote: > Add DTB boot support, only support LS2K1000 processor for now, > determine whether to use the built-in DTB or the DTB from the > firmware by checking the range of CKSEG0 and XKPHYS. > > Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> > Signed-off-by: Qing Zhang <zhangqing@loongson.cn> > Signed-off-by: Xingxing Su <suxingxing@loongson.cn> > --- > .../include/asm/mach-loongson64/boot_param.h | 6 ++++++ > arch/mips/include/asm/mach-loongson64/loongson.h | 3 ++- > arch/mips/loongson64/env.c | 13 ++++++++++++- > arch/mips/loongson64/init.c | 16 ++++++++++++++-- > 4 files changed, 34 insertions(+), 4 deletions(-) > > diff --git a/arch/mips/include/asm/mach-loongson64/boot_param.h b/arch/mips/include/asm/mach-loongson64/boot_param.h > index 4592841b6b0c..53c29a305ff0 100644 > --- a/arch/mips/include/asm/mach-loongson64/boot_param.h > +++ b/arch/mips/include/asm/mach-loongson64/boot_param.h > @@ -198,7 +198,13 @@ enum loongson_bridge_type { > VIRTUAL = 3 > }; > > +enum loongson_fw_interface { > + LOONGSON_LEFI = 0, > + LOONGSON_DTB = 1, > +}; > + > struct loongson_system_configuration { > + enum loongson_fw_interface fw_interface;
do you need this for future use ? Right now this information is only needed in init.c and doesn't need to be exported...
> + if (fw_arg2 == 0 || (be32_to_cpup((__be32 *)fw_arg2) == OF_DT_HEADER)) {
what about using fdt_magic(fw_arg2) == FDT_MAGIC ?
Thomas.
-- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]
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