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-rw-r--r--target/linux/patches/2.6.36/zboot-brcm-reloc.patch297
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