diff options
Diffstat (limited to 'target/linux/generic/pending-4.4/093-MIPS-store-the-appended-dtb-address-in-a-variable.patch')
| -rw-r--r-- | target/linux/generic/pending-4.4/093-MIPS-store-the-appended-dtb-address-in-a-variable.patch | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/target/linux/generic/pending-4.4/093-MIPS-store-the-appended-dtb-address-in-a-variable.patch b/target/linux/generic/pending-4.4/093-MIPS-store-the-appended-dtb-address-in-a-variable.patch deleted file mode 100644 index d868d210aa..0000000000 --- a/target/linux/generic/pending-4.4/093-MIPS-store-the-appended-dtb-address-in-a-variable.patch +++ /dev/null @@ -1,132 +0,0 @@ -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/ath79/setup.c -+++ b/arch/mips/ath79/setup.c -@@ -207,6 +207,8 @@ void __init plat_mem_setup(void) - fdt_start = fw_getenvl("fdt_start"); - if (fdt_start) - __dt_setup_arch((void *)KSEG0ADDR(fdt_start)); -+ else if (fw_passed_dtb) -+ __dt_setup_arch((void *)KSEG0ADDR(fw_passed_dtb)); - #ifdef CONFIG_BUILTIN_DTB - else - __dt_setup_arch(__dtb_start); ---- a/arch/mips/bmips/setup.c -+++ b/arch/mips/bmips/setup.c -@@ -149,8 +149,8 @@ void __init plat_mem_setup(void) - /* intended to somewhat resemble ARM; see Documentation/arm/Booting */ - if (fw_arg0 == 0 && fw_arg1 == 0xffffffff) - dtb = phys_to_virt(fw_arg2); -- else if (fw_arg0 == -2) /* UHI interface */ -- dtb = (void *)fw_arg1; -+ else if (fw_passed_dtb) /* UHI interface */ -+ dtb = (void *)fw_passed_dtb; - else if (__dtb_start != __dtb_end) - dtb = (void *)__dtb_start; - else ---- a/arch/mips/include/asm/bootinfo.h -+++ b/arch/mips/include/asm/bootinfo.h -@@ -127,6 +127,10 @@ extern char arcs_cmdline[COMMAND_LINE_SI - */ - extern unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3; - -+#ifdef CONFIG_USE_OF -+extern unsigned long fw_passed_dtb; -+#endif -+ - /* - * Platform memory detection hook called by setup_arch - */ ---- a/arch/mips/kernel/head.S -+++ b/arch/mips/kernel/head.S -@@ -94,21 +94,24 @@ NESTED(kernel_entry, 16, sp) # kernel - jr t0 - 0: - -+#ifdef CONFIG_USE_OF - #ifdef CONFIG_MIPS_RAW_APPENDED_DTB -- PTR_LA t0, __appended_dtb -+ PTR_LA t2, __appended_dtb - - #ifdef CONFIG_CPU_BIG_ENDIAN - li t1, 0xd00dfeed - #else - li t1, 0xedfe0dd0 - #endif -- lw t2, (t0) -- bne t1, t2, not_found -- nop -- -- move a1, t0 -- PTR_LI a0, -2 --not_found: -+ lw t0, (t2) -+ beq t0, t1, dtb_found -+#endif -+ li t1, -2 -+ beq a0, t1, dtb_found -+ move t2, a1 -+ -+ li t2, 0 -+dtb_found: - #endif - PTR_LA t0, __bss_start # clear .bss - LONG_S zero, (t0) -@@ -123,6 +126,10 @@ not_found: - LONG_S a2, fw_arg2 - LONG_S a3, fw_arg3 - -+#ifdef CONFIG_USE_OF -+ LONG_S t2, fw_passed_dtb -+#endif -+ - MTC0 zero, CP0_CONTEXT # clear context register - PTR_LA $28, init_thread_union - /* Set the SP after an empty pt_regs. */ ---- a/arch/mips/kernel/setup.c -+++ b/arch/mips/kernel/setup.c -@@ -886,6 +886,10 @@ void __init setup_arch(char **cmdline_p) - unsigned long kernelsp[NR_CPUS]; - unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3; - -+#ifdef CONFIG_USE_OF -+unsigned long fw_passed_dtb; -+#endif -+ - #ifdef CONFIG_DEBUG_FS - struct dentry *mips_debugfs_dir; - static int __init debugfs_mips(void) |