diff options
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/patches/2.6.36/zboot-brcm-reloc.patch | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/target/linux/patches/2.6.36/zboot-brcm-reloc.patch b/target/linux/patches/2.6.36/zboot-brcm-reloc.patch new file mode 100644 index 000000000..2ff2cce15 --- /dev/null +++ b/target/linux/patches/2.6.36/zboot-brcm-reloc.patch @@ -0,0 +1,297 @@ +--- /dev/null Thu Jan 6 02:10:11 2011 ++++ linux-2.6.36/arch/mips/boot/compressed/invcache.S Thu Jan 6 01:32:57 2011 +@@ -0,0 +1,132 @@ ++/*- ++ * written 2011 by Thorsten Glaser <tg@mirbsd.org> based on ++ * code from LZMA-Loader with the following copyright note: ++ * Copyright 2005 Oleg I. Vdovikin <oleg@cs.msu.su> ++ * cache manipulation adapted from Broadcom code ++ * idea taken from original bunzip2 decompressor code ++ * Copyright 2004 Manuel Novoa III <mjn3@codepoet.org> ++ */ ++ ++/* ++ * This file is supposed to be #include’d where it’s ++ * needed; we will not trash s0, s1, s2, s3. ++ */ ++ ++#define KSEG0 0x80000000 ++ ++#define C0_CONFIG $16 ++#define C0_TAGLO $28 ++#define C0_TAGHI $29 ++ ++#define CONF1_DA_SHIFT 7 /* D$ associativity */ ++#define CONF1_DA_MASK 0x00000380 ++#define CONF1_DA_BASE 1 ++#define CONF1_DL_SHIFT 10 /* D$ line size */ ++#define CONF1_DL_MASK 0x00001c00 ++#define CONF1_DL_BASE 2 ++#define CONF1_DS_SHIFT 13 /* D$ sets/way */ ++#define CONF1_DS_MASK 0x0000e000 ++#define CONF1_DS_BASE 64 ++#define CONF1_IA_SHIFT 16 /* I$ associativity */ ++#define CONF1_IA_MASK 0x00070000 ++#define CONF1_IA_BASE 1 ++#define CONF1_IL_SHIFT 19 /* I$ line size */ ++#define CONF1_IL_MASK 0x00380000 ++#define CONF1_IL_BASE 2 ++#define CONF1_IS_SHIFT 22 /* Instruction cache sets/way */ ++#define CONF1_IS_MASK 0x01c00000 ++#define CONF1_IS_BASE 64 ++ ++#define Index_Invalidate_I 0x00 ++#define Index_Writeback_Inv_D 0x01 ++ ++ /* Get cache sizes */ ++ .set mips32 ++ mfc0 s4,C0_CONFIG,1 ++ .set mips0 ++ ++ li s5,CONF1_DL_MASK ++ and s5,s4 ++ beq s5,zero,2f ++ nop ++ ++ srl s5,CONF1_DL_SHIFT ++ li t0,CONF1_DL_BASE ++ sll s5,t0,s5 /* s5 has D$ cache line size */ ++ ++ li s6,CONF1_DA_MASK ++ and s6,s4 ++ srl s6,CONF1_DA_SHIFT ++ addiu s6,CONF1_DA_BASE /* s6 now has D$ associativity */ ++ ++ li t0,CONF1_DS_MASK ++ and t0,s4 ++ srl t0,CONF1_DS_SHIFT ++ li s7,CONF1_DS_BASE ++ sll s7,s7,t0 /* s7 has D$ sets per way */ ++ ++ multu s6,s7 /* sets/way * associativity */ ++ mflo t0 /* total cache lines */ ++ ++ multu s5,t0 /* D$ linesize * lines */ ++ mflo s6 /* s6 is now D$ size in bytes */ ++ ++ /* Initilize the D$: */ ++ mtc0 zero,C0_TAGLO ++ mtc0 zero,C0_TAGHI ++ ++ li t0,KSEG0 /* Just an address for the first $ line */ ++ addu t1,t0,s6 /* + size of cache == end */ ++ ++ .set mips3 ++1: cache Index_Writeback_Inv_D,0(t0) ++ .set mips0 ++ bne t0,t1,1b ++ addu t0,s5 ++ ++2: ++ /* Now we get to do it all again for the I$ */ ++ ++ move s7,zero /* just in case there is no icache */ ++ move t8,zero ++ ++ li t0,CONF1_IL_MASK ++ and t0,s4 ++ beq t0,zero,3f ++ nop ++ ++ srl t0,CONF1_IL_SHIFT ++ li s7,CONF1_IL_BASE ++ sll s7,t0 /* s7 has I$ cache line size */ ++ ++ li t0,CONF1_IA_MASK ++ and t0,s4 ++ srl t0,CONF1_IA_SHIFT ++ addiu t8,t0,CONF1_IA_BASE /* t8 now has I$ associativity */ ++ ++ li t0,CONF1_IS_MASK ++ and t0,s4 ++ srl t0,CONF1_IS_SHIFT ++ li t9,CONF1_IS_BASE ++ sll t9,t0 /* t9 has I$ sets per way */ ++ ++ multu t8,t9 /* sets/way * associativity */ ++ mflo t0 /* t8 is now total cache lines */ ++ ++ multu s7,t0 /* I$ linesize * lines */ ++ mflo t8 /* t8 is cache size in bytes */ ++ ++ /* Initilize the I$: */ ++ mtc0 zero,C0_TAGLO ++ mtc0 zero,C0_TAGHI ++ ++ li t0,KSEG0 /* Just an address for the first $ line */ ++ addu t1,t0,t8 /* + size of cache == end */ ++ ++ .set mips3 ++1: cache Index_Invalidate_I,0(t0) ++ .set mips0 ++ bne t0,t1,1b ++ addu t0,s7 ++ ++3: +--- /dev/null Thu Jan 6 00:14:18 2011 ++++ linux-2.6.36/arch/mips/boot/compressed/selfreloc.lds.S Wed Jan 5 23:52:43 2011 +@@ -0,0 +1,39 @@ ++/*- ++ * written 2010 by Thorsten Glaser <tg@debian.org> based on ++ * arch/mips/kernel/vmlinux.lds and arch/mips/boot/compressed/ld.script ++ */ ++ ++#include <asm/asm-offsets.h> ++#include <asm/page.h> ++#include <asm-generic/vmlinux.lds.h> ++ ++#undef mips ++#define mips mips ++OUTPUT_ARCH(mips) ++ENTRY(selfreloc_start) ++PHDRS { ++ text PT_LOAD FLAGS(7); /* RWX */ ++} ++SECTIONS ++{ ++ . = VMLINUX_LOAD_ADDRESS; ++ .text : { ++ *(.text) ++ *(.text.*) ++ *(.rodata) ++ *(.rodata.*) ++ *(.data) ++ *(.data.*) ++ *(.bss) ++ *(.bss.*) ++ } :text ++ /DISCARD/ : { ++ *(.MIPS.options) ++ *(.options) ++ *(.pdr) ++ *(.reginfo) ++ *(.comment) ++ *(.note) ++ *(.gnu.attributes) ++ } ++} +--- /dev/null Thu Jan 6 02:10:14 2011 ++++ linux-2.6.36/arch/mips/boot/compressed/selfreloc.S Thu Jan 6 01:21:44 2011 +@@ -0,0 +1,60 @@ ++/*- ++ * written 2011 by Thorsten Glaser <tg@freewrt.org> based on ++ * arch/mips/boot/compressed/head.S and code from LZMA-Loader ++ */ ++ ++#include <asm/asm.h> ++#include <asm/regdef.h> ++ ++ .set noreorder ++ .cprestore ++ ++ .text ++ LEAF(selfreloc_start) ++selfreloc_start: ++ /* Save boot rom start args */ ++ move s0, a0 ++ move s1, a1 ++ move s2, a2 ++ move s3, a3 ++ ++ /* Copy code to the correct place */ ++ PTR_LI a0, VMLINUZ_LOAD_ADDRESS ++ PTR_LA a1, imgbeg ++ PTR_LA a2, imgend ++1: lw t0, 0(a1) ++ sw t0, 0(a0) ++ add a1, 4 ++ add a0, 4 ++ blt a1, a2, 1b ++ nop ++ ++ /* ++ * At this point we need to invalidate dcache and ++ * icache before jumping to the new code ++ */ ++/* #include "invcache.S" // since this may work only on brcm? */ ++ ++ /* Restore boot rom start args */ ++ move a0, s0 ++ move a1, s1 ++ move a2, s2 ++ move a3, s3 ++ ++ /* Jump to the code at its new location */ ++ PTR_LI k0, VMLINUZ_LOAD_ADDRESS ++ jr k0 ++ nop ++ ++ /* Just in case we come back… */ ++3: ++ b 3b ++ nop ++ END(selfreloc_start) ++ ++ .globl imgbeg ++ .p2align 2 ++imgbeg: .incbin "vmlinuz.bin" ++ .globl imgend ++ .p2align 2 ++imgend: +--- linux-2.6.36/arch/mips/boot/compressed/Makefile~ Wed Jan 5 21:26:40 2011 ++++ linux-2.6.36/arch/mips/boot/compressed/Makefile Wed Jan 5 23:35:58 2011 +@@ -62,8 +62,13 @@ $(obj)/piggy.o: $(obj)/dummy.o $(obj)/vm + # Calculate the load address of the compressed kernel image + hostprogs-y := calc_vmlinuz_load_addr + ++ifdef CONFIG_BCM47XX ++# XXX just after CFE, just pray the address is static ++VMLINUZ_LOAD_ADDRESS = 0xffffffff80480000 ++else + VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \ + $(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS)) ++endif + + vmlinuzobjs-y += $(obj)/piggy.o + +@@ -106,4 +107,12 @@ OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFL + vmlinuz.srec: vmlinuz + $(call cmd,objcopy) + +-clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec} ++AFLAGS_selfreloc.o := -DVMLINUZ_LOAD_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) ++arch/mips/boot/compressed/selfreloc.o: arch/mips/boot/compressed/selfreloc.S vmlinuz.bin arch/mips/boot/compressed/invcache.S ++ ++CPPFLAGS_selfreloc.lds := $(KBUILD_CFLAGS) ++ ++vmlinub.elf: arch/mips/boot/compressed/selfreloc.o arch/mips/boot/compressed/selfreloc.lds ++ $(LD) $(LDFLAGS) -T arch/mips/boot/compressed/selfreloc.lds arch/mips/boot/compressed/selfreloc.o -o $@ ++ ++clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec} $(objtree)/vmlinub.elf $(objtree)/arch/mips/boot/compressed/selfreloc.{o,lds} +--- linux-2.6.36/arch/mips/Makefile~ Wed Jan 5 20:26:12 2011 ++++ linux-2.6.36/arch/mips/Makefile Wed Jan 5 22:41:38 2011 +@@ -79,6 +79,7 @@ endif + all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32) + all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64) + all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz ++all-$(CONFIG_BCM47XX) += vmlinub.elf + + # + # GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel +@@ -285,7 +286,7 @@ vmlinux.bin vmlinux.ecoff vmlinux.srec: + $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) arch/mips/boot/$@ + + # boot/compressed +-vmlinuz vmlinuz.bin vmlinuz.ecoff vmlinuz.srec: $(vmlinux-32) FORCE ++vmlinuz vmlinuz.bin vmlinuz.ecoff vmlinuz.srec vmlinub.elf: $(vmlinux-32) FORCE + $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \ + VMLINUX_LOAD_ADDRESS=$(load-y) 32bit-bfd=$(32bit-bfd) $@ + +@@ -322,6 +323,7 @@ define archhelp + echo ' vmlinuz.ecoff - ECOFF zboot image' + echo ' vmlinuz.bin - Raw binary zboot image' + echo ' vmlinuz.srec - SREC zboot image' ++ echo ' vmlinub.elf - ELF self-relocating zboot image' + echo + echo ' These will be default as apropriate for a configured platform.' + endef |