diff options
Diffstat (limited to 'target/linux/lantiq/patches-4.4/122-MIPS-store-the-appended-dtb-address-in-a-variable.patch')
| -rw-r--r-- | target/linux/lantiq/patches-4.4/122-MIPS-store-the-appended-dtb-address-in-a-variable.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-4.4/122-MIPS-store-the-appended-dtb-address-in-a-variable.patch b/target/linux/lantiq/patches-4.4/122-MIPS-store-the-appended-dtb-address-in-a-variable.patch new file mode 100644 index 0000000000..a6641bf723 --- /dev/null +++ b/target/linux/lantiq/patches-4.4/122-MIPS-store-the-appended-dtb-address-in-a-variable.patch @@ -0,0 +1,49 @@ +From 15f37e1588920e010f20b53f04af94e91b8ee714 Mon Sep 17 00:00:00 2001 +From: Jonas Gorski <jogo@openwrt.org> +Date: Mon, 20 Jun 2016 11:27:37 +0200 +Subject: [PATCH] MIPS: store the appended dtb address in a variable + +Instead of rewriting the arguments to match the UHI spec, store the +address of a appended or UHI supplied dtb in fw_supplied_dtb. + +That way the original bootloader arugments are kept intact while still +making the use of an appended dtb invisible for mach code. + +Mach code can still find out if it is an appended dtb by comparing +fw_arg1 with fw_supplied_dtb. + +Signed-off-by: Jonas Gorski <jogo@openwrt.org> +Cc: Kevin Cernekee <cernekee@gmail.com> +Cc: Florian Fainelli <f.fainelli@gmail.com> +Cc: John Crispin <john@phrozen.org> +Cc: Paul Burton <paul.burton@imgtec.com> +Cc: James Hogan <james.hogan@imgtec.com> +Cc: Alban Bedel <albeu@free.fr> +Cc: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us> +Cc: Antony Pavlov <antonynpavlov@gmail.com> +Cc: linux-mips@linux-mips.org +Patchwork: https://patchwork.linux-mips.org/patch/13699/ +Signed-off-by: Ralf Baechle <ralf@linux-mips.org> +--- + arch/mips/ath79/setup.c | 4 ++-- + arch/mips/bmips/setup.c | 4 ++-- + arch/mips/include/asm/bootinfo.h | 4 ++++ + arch/mips/kernel/head.S | 21 ++++++++++++++------- + arch/mips/kernel/setup.c | 4 ++++ + arch/mips/lantiq/prom.c | 4 ++-- + arch/mips/pic32/pic32mzda/init.c | 4 ++-- + 7 files changed, 30 insertions(+), 15 deletions(-) + +--- a/arch/mips/lantiq/prom.c ++++ b/arch/mips/lantiq/prom.c +@@ -74,8 +74,8 @@ void __init plat_mem_setup(void) + + set_io_port_base((unsigned long) KSEG1); + +- if (fw_arg0 == -2) /* UHI interface */ +- dtb = (void *)fw_arg1; ++ if (fw_passed_dtb) /* UHI interface */ ++ dtb = (void *)fw_passed_dtb; + else if (__dtb_start != __dtb_end) + dtb = (void *)__dtb_start; + else |