parisc: Add core code for self-extracting kernel
Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Helge Deller
parent
e35a2ce692
commit
2f3c7b8137
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@ -0,0 +1,2 @@
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image
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bzImage
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@ -0,0 +1,26 @@
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#
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# Makefile for the linux parisc-specific parts of the boot image creator.
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#
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COMPILE_VERSION := __linux_compile_version_id__`hostname | \
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tr -c '[0-9A-Za-z]' '_'`__`date | \
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tr -c '[0-9A-Za-z]' '_'`_t
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ccflags-y := -DCOMPILE_VERSION=$(COMPILE_VERSION) -gstabs -I.
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targets := image
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targets += bzImage
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subdir- := compressed
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$(obj)/image: vmlinux FORCE
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$(call if_changed,objcopy)
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$(obj)/bzImage: $(obj)/compressed/vmlinux FORCE
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$(call if_changed,objcopy)
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$(obj)/compressed/vmlinux: FORCE
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$(Q)$(MAKE) $(build)=$(obj)/compressed $@
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install: $(CONFIGURE) $(obj)/bzImage
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sh -x $(srctree)/$(obj)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
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System.map "$(INSTALL_PATH)"
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@ -0,0 +1,3 @@
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sizes.h
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vmlinux
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vmlinux.lds
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@ -0,0 +1,86 @@
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#
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# linux/arch/parisc/boot/compressed/Makefile
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#
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# create a compressed self-extracting vmlinux image from the original vmlinux
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#
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KCOV_INSTRUMENT := n
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GCOV_PROFILE := n
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UBSAN_SANITIZE := n
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targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2
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targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4
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targets += misc.o piggy.o sizes.h head.o real2.o firmware.o
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KBUILD_CFLAGS := -D__KERNEL__ -O2 -DBOOTLOADER
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KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
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KBUILD_CFLAGS += $(cflags-y) -fno-delete-null-pointer-checks
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KBUILD_CFLAGS += -fno-PIE -mno-space-regs -mdisable-fpregs
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ifndef CONFIG_64BIT
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KBUILD_CFLAGS += -mfast-indirect-calls
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endif
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OBJECTS += $(obj)/head.o $(obj)/real2.o $(obj)/firmware.o $(obj)/misc.o $(obj)/piggy.o
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# LDFLAGS_vmlinux := -X --whole-archive -e startup -T
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LDFLAGS_vmlinux := -X -e startup --as-needed -T
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$(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS) $(LIBGCC)
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$(call if_changed,ld)
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sed-sizes := -e 's/^\([0-9a-fA-F]*\) . \(__bss_start\|_end\|parisc_kernel_start\)$$/\#define SZ\2 0x\1/p'
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quiet_cmd_sizes = GEN $@
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cmd_sizes = $(NM) $< | sed -n $(sed-sizes) > $@
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$(obj)/sizes.h: vmlinux
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$(call if_changed,sizes)
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AFLAGS_head.o += -I$(objtree)/$(obj) -DBOOTLOADER
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$(obj)/head.o: $(obj)/sizes.h
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CFLAGS_misc.o += -I$(objtree)/$(obj)
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$(obj)/misc.o: $(obj)/sizes.h
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$(obj)/firmware.o: $(obj)/firmware.c
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$(obj)/firmware.c: $(srctree)/arch/$(SRCARCH)/kernel/firmware.c
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$(call cmd,shipped)
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AFLAGS_real2.o += -DBOOTLOADER
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$(obj)/real2.o: $(obj)/real2.S
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$(obj)/real2.S: $(srctree)/arch/$(SRCARCH)/kernel/real2.S
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$(call cmd,shipped)
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$(obj)/misc.o: $(obj)/sizes.h
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CPPFLAGS_vmlinux.lds += -I$(objtree)/$(obj) -DBOOTLOADER
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$(obj)/vmlinux.lds: $(obj)/sizes.h
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OBJCOPYFLAGS_vmlinux.bin := -O binary -R .comment -S
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$(obj)/vmlinux.bin: vmlinux
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$(call if_changed,objcopy)
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vmlinux.bin.all-y := $(obj)/vmlinux.bin
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suffix-$(CONFIG_KERNEL_GZIP) := gz
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suffix-$(CONFIG_KERNEL_BZIP2) := bz2
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suffix-$(CONFIG_KERNEL_LZ4) := lz4
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suffix-$(CONFIG_KERNEL_LZMA) := lzma
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suffix-$(CONFIG_KERNEL_LZO) := lzo
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suffix-$(CONFIG_KERNEL_XZ) := xz
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$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y)
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$(call if_changed,gzip)
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$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y)
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$(call if_changed,bzip2)
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$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y)
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$(call if_changed,lz4)
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$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y)
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$(call if_changed,lzma)
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$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y)
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$(call if_changed,lzo)
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$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y)
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$(call if_changed,xzkern)
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LDFLAGS_piggy.o := -r --format binary --oformat $(LD_BFD) -T
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$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix-y)
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$(call if_changed,ld)
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@ -0,0 +1,85 @@
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/*
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* Startup glue code to uncompress the kernel
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*
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* (C) 2017 Helge Deller <deller@gmx.de>
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*/
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#include <linux/init.h>
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#include <linux/linkage.h>
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#include <asm/asm-offsets.h>
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#include <asm/page.h>
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#include <asm/psw.h>
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#include <asm/pdc.h>
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#include <asm/assembly.h>
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#include "sizes.h"
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#define BOOTADDR(x) (x)
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#ifndef CONFIG_64BIT
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.import $global$ /* forward declaration */
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#endif /*!CONFIG_64BIT*/
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__HEAD
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ENTRY(startup)
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.level LEVEL
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#define PSW_W_SM 0x200
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#define PSW_W_BIT 36
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;! nuke the W bit, saving original value
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.level 2.0
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rsm PSW_W_SM, %r1
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.level 1.1
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extrw,u %r1, PSW_W_BIT-32, 1, %r1
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copy %r1, %arg0
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/* Make sure sr4-sr7 are set to zero for the kernel address space */
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mtsp %r0,%sr4
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mtsp %r0,%sr5
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mtsp %r0,%sr6
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mtsp %r0,%sr7
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/* Clear BSS */
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.import _bss,data
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.import _ebss,data
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load32 BOOTADDR(_bss),%r3
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load32 BOOTADDR(_ebss),%r4
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ldo FRAME_SIZE(%r4),%sp /* stack at end of bss */
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$bss_loop:
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cmpb,<<,n %r3,%r4,$bss_loop
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stw,ma %r0,4(%r3)
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/* Initialize the global data pointer */
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loadgp
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/* arg0..arg4 were set by palo. */
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copy %arg1, %r6 /* command line */
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copy %arg2, %r7 /* rd-start */
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copy %arg3, %r8 /* rd-end */
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load32 BOOTADDR(decompress_kernel),%r3
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#ifdef CONFIG_64BIT
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.level LEVEL
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ssm PSW_W_SM, %r0 /* set W-bit */
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depdi 0, 31, 32, %r3
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#endif
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load32 BOOTADDR(startup_continue), %r2
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bv,n 0(%r3)
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startup_continue:
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#ifdef CONFIG_64BIT
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.level LEVEL
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rsm PSW_W_SM, %r0 /* clear W-bit */
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#endif
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load32 KERNEL_BINARY_TEXT_START, %arg0 /* free mem */
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copy %r6, %arg1 /* command line */
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copy %r7, %arg2 /* rd-start */
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copy %r8, %arg3 /* rd-end */
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bv,n 0(%ret0)
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END(startup)
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/*
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* Definitions and wrapper functions for kernel decompressor
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*
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* (C) 2017 Helge Deller <deller@gmx.de>
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*/
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#include <linux/uaccess.h>
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#include <asm/unaligned.h>
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#include <asm/page.h>
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#include "sizes.h"
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/*
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* gzip declarations
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*/
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#define STATIC static
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#undef memmove
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#define memmove memmove
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#define memzero(s, n) memset((s), 0, (n))
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#define malloc malloc_gzip
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#define free free_gzip
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/* Symbols defined by linker scripts */
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extern char input_data[];
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extern int input_len;
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extern __le32 output_len; /* at unaligned address, little-endian */
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extern char _text, _end;
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extern char _bss, _ebss;
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extern char _startcode_end;
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extern void startup_continue(void *entry, unsigned long cmdline,
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unsigned long rd_start, unsigned long rd_end) __noreturn;
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void error(char *m) __noreturn;
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static unsigned long free_mem_ptr;
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static unsigned long free_mem_end_ptr;
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#ifdef CONFIG_KERNEL_GZIP
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#include "../../../../lib/decompress_inflate.c"
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#endif
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#ifdef CONFIG_KERNEL_BZIP2
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#include "../../../../lib/decompress_bunzip2.c"
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#endif
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#ifdef CONFIG_KERNEL_LZ4
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#include "../../../../lib/decompress_unlz4.c"
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#endif
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#ifdef CONFIG_KERNEL_LZMA
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#include "../../../../lib/decompress_unlzma.c"
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#endif
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#ifdef CONFIG_KERNEL_LZO
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#include "../../../../lib/decompress_unlzo.c"
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#endif
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#ifdef CONFIG_KERNEL_XZ
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#include "../../../../lib/decompress_unxz.c"
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#endif
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void *memmove(void *dest, const void *src, size_t n)
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{
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const char *s = src;
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char *d = dest;
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if (d <= s) {
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while (n--)
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*d++ = *s++;
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} else {
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d += n;
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s += n;
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while (n--)
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*--d = *--s;
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}
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return dest;
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}
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void *memset(void *s, int c, size_t count)
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{
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char *xs = (char *)s;
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while (count--)
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*xs++ = c;
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return s;
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}
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void *memcpy(void *d, const void *s, size_t len)
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{
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char *dest = (char *)d;
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const char *source = (const char *)s;
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while (len--)
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*dest++ = *source++;
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return d;
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}
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size_t strlen(const char *s)
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{
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const char *sc;
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for (sc = s; *sc != '\0'; ++sc)
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;
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return sc - s;
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}
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char *strchr(const char *s, int c)
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{
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while (*s) {
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if (*s == (char)c)
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return (char *)s;
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++s;
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}
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return NULL;
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}
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int puts(const char *s)
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{
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const char *nuline = s;
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while ((nuline = strchr(s, '\n')) != NULL) {
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if (nuline != s)
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pdc_iodc_print(s, nuline - s);
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pdc_iodc_print("\r\n", 2);
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s = nuline + 1;
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}
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if (*s != '\0')
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pdc_iodc_print(s, strlen(s));
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return 0;
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}
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static int putchar(int c)
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{
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char buf[2];
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buf[0] = c;
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buf[1] = '\0';
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puts(buf);
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return c;
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}
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void __noreturn error(char *x)
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{
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puts("\n\n");
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puts(x);
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puts("\n\n -- System halted");
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while (1) /* wait forever */
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;
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}
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static int print_hex(unsigned long num)
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{
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const char hex[] = "0123456789abcdef";
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char str[40];
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int i = sizeof(str)-1;
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str[i--] = '\0';
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do {
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str[i--] = hex[num & 0x0f];
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num >>= 4;
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} while (num);
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str[i--] = 'x';
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str[i] = '0';
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puts(&str[i]);
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return 0;
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}
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int printf(const char *fmt, ...)
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{
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va_list args;
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int i = 0;
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va_start(args, fmt);
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while (fmt[i]) {
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if (fmt[i] != '%') {
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put:
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putchar(fmt[i++]);
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continue;
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}
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if (fmt[++i] == '%')
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goto put;
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++i;
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print_hex(va_arg(args, unsigned long));
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}
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va_end(args);
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return 0;
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}
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/* helper functions for libgcc */
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void abort(void)
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{
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error("aborted.");
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}
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#undef malloc
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void *malloc(size_t size)
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{
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return malloc_gzip(size);
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}
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#undef free
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void free(void *ptr)
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{
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return free_gzip(ptr);
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}
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static void flush_data_cache(char *start, unsigned long length)
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{
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char *end = start + length;
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do {
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asm volatile("fdc 0(%0)" : : "r" (start));
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asm volatile("fic 0(%%sr0,%0)" : : "r" (start));
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start += 16;
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} while (start < end);
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asm volatile("fdc 0(%0)" : : "r" (end));
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asm ("sync");
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}
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unsigned long decompress_kernel(unsigned int started_wide,
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unsigned int command_line,
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const unsigned int rd_start,
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const unsigned int rd_end)
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{
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char *output;
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unsigned long len, len_all;
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#ifdef CONFIG_64BIT
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parisc_narrow_firmware = 0;
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#endif
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set_firmware_width_unlocked();
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putchar('U'); /* if you get this p and no more, string storage */
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/* in $GLOBAL$ is wrong or %dp is wrong */
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puts("ncompressing ...\n");
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output = (char *) KERNEL_BINARY_TEXT_START;
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len_all = __pa(SZ_end) - __pa(SZparisc_kernel_start);
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if ((unsigned long) &_startcode_end > (unsigned long) output)
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error("Bootcode overlaps kernel code");
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len = get_unaligned_le32(&output_len);
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if (len > len_all)
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error("Output len too big.");
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else
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memset(&output[len], 0, len_all - len);
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/*
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* Initialize free_mem_ptr and free_mem_end_ptr.
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*/
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free_mem_ptr = (unsigned long) &_ebss;
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free_mem_ptr += 2*1024*1024; /* leave 2 MB for stack */
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/* Limit memory for bootoader to 1GB */
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#define ARTIFICIAL_LIMIT (1*1024*1024*1024)
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free_mem_end_ptr = PAGE0->imm_max_mem;
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if (free_mem_end_ptr > ARTIFICIAL_LIMIT)
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free_mem_end_ptr = ARTIFICIAL_LIMIT;
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#ifdef CONFIG_BLK_DEV_INITRD
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/* if we have ramdisk this is at end of memory */
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if (rd_start && rd_start < free_mem_end_ptr)
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free_mem_end_ptr = rd_start;
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#endif
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#ifdef DEBUG
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printf("startcode_end = %x\n", &_startcode_end);
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printf("commandline = %x\n", command_line);
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printf("rd_start = %x\n", rd_start);
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printf("rd_end = %x\n", rd_end);
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printf("free_ptr = %x\n", free_mem_ptr);
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printf("free_ptr_end = %x\n", free_mem_end_ptr);
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printf("input_data = %x\n", input_data);
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printf("input_len = %x\n", input_len);
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printf("output = %x\n", output);
|
||||
printf("output_len = %x\n", len);
|
||||
printf("output_max = %x\n", len_all);
|
||||
#endif
|
||||
|
||||
__decompress(input_data, input_len, NULL, NULL,
|
||||
output, 0, NULL, error);
|
||||
|
||||
flush_data_cache(output, len);
|
||||
|
||||
printf("Booting kernel ...\n\n");
|
||||
|
||||
return (unsigned long) output;
|
||||
}
|
||||
|
|
@ -0,0 +1,101 @@
|
|||
#include <asm-generic/vmlinux.lds.h>
|
||||
#include <asm/page.h>
|
||||
#include "sizes.h"
|
||||
|
||||
#ifndef CONFIG_64BIT
|
||||
OUTPUT_FORMAT("elf32-hppa-linux")
|
||||
OUTPUT_ARCH(hppa)
|
||||
#else
|
||||
OUTPUT_FORMAT("elf64-hppa-linux")
|
||||
OUTPUT_ARCH(hppa:hppa2.0w)
|
||||
#endif
|
||||
|
||||
ENTRY(startup)
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
/* palo loads at 0x60000 */
|
||||
/* loaded kernel will move to 0x10000 */
|
||||
. = 0xe0000; /* should not overwrite palo code */
|
||||
|
||||
.head.text : {
|
||||
_head = . ;
|
||||
HEAD_TEXT
|
||||
_ehead = . ;
|
||||
}
|
||||
|
||||
/* keep __gp below 0x1000000 */
|
||||
#ifdef CONFIG_64BIT
|
||||
. = ALIGN(16);
|
||||
/* Linkage tables */
|
||||
.opd : {
|
||||
*(.opd)
|
||||
} PROVIDE (__gp = .);
|
||||
.plt : {
|
||||
*(.plt)
|
||||
}
|
||||
.dlt : {
|
||||
*(.dlt)
|
||||
}
|
||||
#endif
|
||||
_startcode_end = .;
|
||||
|
||||
/* bootloader code and data starts behind area of extracted kernel */
|
||||
. = (SZ_end - SZparisc_kernel_start + KERNEL_BINARY_TEXT_START);
|
||||
|
||||
/* align on next page boundary */
|
||||
. = ALIGN(4096);
|
||||
.text : {
|
||||
_text = .; /* Text */
|
||||
*(.text)
|
||||
*(.text.*)
|
||||
_etext = . ;
|
||||
}
|
||||
. = ALIGN(8);
|
||||
.data : {
|
||||
_data = . ;
|
||||
*(.data)
|
||||
*(.data.*)
|
||||
_edata = . ;
|
||||
}
|
||||
. = ALIGN(8);
|
||||
.rodata : {
|
||||
_rodata = . ;
|
||||
*(.rodata) /* read-only data */
|
||||
*(.rodata.*)
|
||||
_erodata = . ;
|
||||
}
|
||||
. = ALIGN(8);
|
||||
.rodata.compressed : {
|
||||
*(.rodata.compressed)
|
||||
}
|
||||
. = ALIGN(8);
|
||||
.bss : {
|
||||
_bss = . ;
|
||||
*(.bss)
|
||||
*(.bss.*)
|
||||
*(COMMON)
|
||||
. = ALIGN(4096);
|
||||
_ebss = .;
|
||||
}
|
||||
|
||||
STABS_DEBUG
|
||||
.note 0 : { *(.note) }
|
||||
|
||||
/* Sections to be discarded */
|
||||
DISCARDS
|
||||
/DISCARD/ : {
|
||||
#ifdef CONFIG_64BIT
|
||||
/* temporary hack until binutils is fixed to not emit these
|
||||
* for static binaries
|
||||
*/
|
||||
*(.PARISC.unwind) /* no unwind data */
|
||||
*(.interp)
|
||||
*(.dynsym)
|
||||
*(.dynstr)
|
||||
*(.dynamic)
|
||||
*(.hash)
|
||||
*(.gnu.hash)
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,10 @@
|
|||
SECTIONS
|
||||
{
|
||||
.rodata.compressed : {
|
||||
input_len = .;
|
||||
LONG(input_data_end - input_data) input_data = .;
|
||||
*(.data)
|
||||
output_len = . - 4; /* can be at unaligned address */
|
||||
input_data_end = .;
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,65 @@
|
|||
#!/bin/sh
|
||||
#
|
||||
# arch/parisc/install.sh, derived from arch/i386/boot/install.sh
|
||||
#
|
||||
# This file is subject to the terms and conditions of the GNU General Public
|
||||
# License. See the file "COPYING" in the main directory of this archive
|
||||
# for more details.
|
||||
#
|
||||
# Copyright (C) 1995 by Linus Torvalds
|
||||
#
|
||||
# Adapted from code in arch/i386/boot/Makefile by H. Peter Anvin
|
||||
#
|
||||
# "make install" script for i386 architecture
|
||||
#
|
||||
# Arguments:
|
||||
# $1 - kernel version
|
||||
# $2 - kernel image file
|
||||
# $3 - kernel map file
|
||||
# $4 - default install path (blank if root directory)
|
||||
#
|
||||
|
||||
verify () {
|
||||
if [ ! -f "$1" ]; then
|
||||
echo "" 1>&2
|
||||
echo " *** Missing file: $1" 1>&2
|
||||
echo ' *** You need to run "make" before "make install".' 1>&2
|
||||
echo "" 1>&2
|
||||
exit 1
|
||||
fi
|
||||
}
|
||||
|
||||
# Make sure the files actually exist
|
||||
|
||||
verify "$2"
|
||||
verify "$3"
|
||||
|
||||
# User may have a custom install script
|
||||
|
||||
if [ -n "${INSTALLKERNEL}" ]; then
|
||||
if [ -x ~/bin/${INSTALLKERNEL} ]; then exec ~/bin/${INSTALLKERNEL} "$@"; fi
|
||||
if [ -x /sbin/${INSTALLKERNEL} ]; then exec /sbin/${INSTALLKERNEL} "$@"; fi
|
||||
fi
|
||||
|
||||
# Default install
|
||||
|
||||
if [ "$(basename $2)" = "zImage" ]; then
|
||||
# Compressed install
|
||||
echo "Installing compressed kernel"
|
||||
base=vmlinuz
|
||||
else
|
||||
# Normal install
|
||||
echo "Installing normal kernel"
|
||||
base=vmlinux
|
||||
fi
|
||||
|
||||
if [ -f $4/$base-$1 ]; then
|
||||
mv $4/$base-$1 $4/$base-$1.old
|
||||
fi
|
||||
cat $2 > $4/$base-$1
|
||||
|
||||
# Install system map file
|
||||
if [ -f $4/System.map-$1 ]; then
|
||||
mv $4/System.map-$1 $4/System.map-$1.old
|
||||
fi
|
||||
cp $3 $4/System.map-$1
|
||||
Loading…
Reference in New Issue