diff options
Diffstat (limited to 'arch/mips/boot/compressed')
| -rw-r--r-- | arch/mips/boot/compressed/Makefile | 123 | ||||
| -rw-r--r-- | arch/mips/boot/compressed/calc_vmlinuz_load_addr.c | 57 | ||||
| -rw-r--r-- | arch/mips/boot/compressed/dbg.c | 36 | ||||
| -rw-r--r-- | arch/mips/boot/compressed/decompress.c | 119 | ||||
| -rw-r--r-- | arch/mips/boot/compressed/dummy.c | 4 | ||||
| -rw-r--r-- | arch/mips/boot/compressed/head.S | 56 | ||||
| -rw-r--r-- | arch/mips/boot/compressed/ld.script | 53 | ||||
| -rw-r--r-- | arch/mips/boot/compressed/string.c | 28 | ||||
| -rw-r--r-- | arch/mips/boot/compressed/uart-16550.c | 63 | ||||
| -rw-r--r-- | arch/mips/boot/compressed/uart-alchemy.c | 6 |
10 files changed, 545 insertions, 0 deletions
diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile new file mode 100644 index 000000000..dc91bde10 --- /dev/null +++ b/arch/mips/boot/compressed/Makefile @@ -0,0 +1,123 @@ +# +# This file is subject to the terms and conditions of the GNU General Public +# License. +# +# Adapted for MIPS Pete Popov, Dan Malek +# +# Copyright (C) 1994 by Linus Torvalds +# Adapted for PowerPC by Gary Thomas +# modified by Cort (cort@cs.nmt.edu) +# +# Copyright (C) 2009 Lemote Inc. & DSLab, Lanzhou University +# Author: Wu Zhangjin <wuzhangjin@gmail.com> +# + +include $(srctree)/arch/mips/Kbuild.platforms + +# set the default size of the mallocing area for decompressing +BOOT_HEAP_SIZE := 0x400000 + +# Disable Function Tracer +KBUILD_CFLAGS := $(shell echo $(KBUILD_CFLAGS) | sed -e "s/-pg//") + +KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS)) + +KBUILD_CFLAGS := $(LINUXINCLUDE) $(KBUILD_CFLAGS) -D__KERNEL__ \ + -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull" + +KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \ + -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \ + -DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS) + +targets := head.o decompress.o string.o dbg.o uart-16550.o uart-alchemy.o + +# decompressor objects (linked with vmlinuz) +vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o + +ifdef CONFIG_DEBUG_ZBOOT +vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT) += $(obj)/dbg.o +vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o +vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY) += $(obj)/uart-alchemy.o +endif + +ifdef CONFIG_KERNEL_XZ +vmlinuzobjs-y += $(obj)/../../lib/ashldi3.o +endif + +targets += vmlinux.bin +OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S +$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE + $(call if_changed,objcopy) + +tool_$(CONFIG_KERNEL_GZIP) = gzip +tool_$(CONFIG_KERNEL_BZIP2) = bzip2 +tool_$(CONFIG_KERNEL_LZ4) = lz4 +tool_$(CONFIG_KERNEL_LZMA) = lzma +tool_$(CONFIG_KERNEL_LZO) = lzo +tool_$(CONFIG_KERNEL_XZ) = xzkern + +targets += vmlinux.bin.z +$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE + $(call if_changed,$(tool_y)) + +targets += piggy.o +OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \ + --set-section-flags=.image=contents,alloc,load,readonly,data +$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE + $(call if_changed,objcopy) + +# Calculate the load address of the compressed kernel image +hostprogs-y := calc_vmlinuz_load_addr + +ifneq ($(zload-y),) +VMLINUZ_LOAD_ADDRESS := $(zload-y) +else +VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \ + $(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS)) +endif + +vmlinuzobjs-y += $(obj)/piggy.o + +quiet_cmd_zld = LD $@ + cmd_zld = $(LD) $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@ +quiet_cmd_strip = STRIP $@ + cmd_strip = $(STRIP) -s $@ +vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr + $(call cmd,zld) + $(call cmd,strip) + +# +# Some DECstations need all possible sections of an ECOFF executable +# +ifdef CONFIG_MACH_DECSTATION + e2eflag := -a +endif + +# elf2ecoff can only handle 32bit image +hostprogs-y += ../elf2ecoff + +ifdef CONFIG_32BIT + VMLINUZ = vmlinuz +else + VMLINUZ = vmlinuz.32 +endif + +quiet_cmd_32 = OBJCOPY $@ + cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ +vmlinuz.32: vmlinuz + $(call cmd,32) + +quiet_cmd_ecoff = ECOFF $@ + cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag) +vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ) + $(call cmd,ecoff) + +OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary +vmlinuz.bin: vmlinuz + $(call cmd,objcopy) + +OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec +vmlinuz.srec: vmlinuz + $(call cmd,objcopy) + +clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec} diff --git a/arch/mips/boot/compressed/calc_vmlinuz_load_addr.c b/arch/mips/boot/compressed/calc_vmlinuz_load_addr.c new file mode 100644 index 000000000..37fe58c19 --- /dev/null +++ b/arch/mips/boot/compressed/calc_vmlinuz_load_addr.c @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2010 "Wu Zhangjin" <wuzhangjin@gmail.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <sys/types.h> +#include <sys/stat.h> +#include <errno.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> + +int main(int argc, char *argv[]) +{ + unsigned long long vmlinux_size, vmlinux_load_addr, vmlinuz_load_addr; + struct stat sb; + + if (argc != 3) { + fprintf(stderr, "Usage: %s <pathname> <vmlinux_load_addr>\n", + argv[0]); + return EXIT_FAILURE; + } + + if (stat(argv[1], &sb) == -1) { + perror("stat"); + return EXIT_FAILURE; + } + + /* Convert hex characters to dec number */ + errno = 0; + if (sscanf(argv[2], "%llx", &vmlinux_load_addr) != 1) { + if (errno != 0) + perror("sscanf"); + else + fprintf(stderr, "No matching characters\n"); + + return EXIT_FAILURE; + } + + vmlinux_size = (uint64_t)sb.st_size; + vmlinuz_load_addr = vmlinux_load_addr + vmlinux_size; + + /* + * Align with 16 bytes: "greater than that used for any standard data + * types by a MIPS compiler." -- See MIPS Run Linux (Second Edition). + */ + + vmlinuz_load_addr += (16 - vmlinux_size % 16); + + printf("0x%llx\n", vmlinuz_load_addr); + + return EXIT_SUCCESS; +} diff --git a/arch/mips/boot/compressed/dbg.c b/arch/mips/boot/compressed/dbg.c new file mode 100644 index 000000000..06c6a5bd1 --- /dev/null +++ b/arch/mips/boot/compressed/dbg.c @@ -0,0 +1,36 @@ +/* + * MIPS-specific debug support for pre-boot environment + * + * NOTE: putc() is board specific, if your board have a 16550 compatible uart, + * please select SYS_SUPPORTS_ZBOOT_UART16550 for your machine. othewise, you + * need to implement your own putc(). + */ +#include <linux/compiler.h> +#include <linux/types.h> + +void __weak putc(char c) +{ +} + +void puts(const char *s) +{ + char c; + while ((c = *s++) != '\0') { + putc(c); + if (c == '\n') + putc('\r'); + } +} + +void puthex(unsigned long long val) +{ + + unsigned char buf[10]; + int i; + for (i = 7; i >= 0; i--) { + buf[i] = "0123456789ABCDEF"[val & 0x0F]; + val >>= 4; + } + buf[8] = '\0'; + puts(buf); +} diff --git a/arch/mips/boot/compressed/decompress.c b/arch/mips/boot/compressed/decompress.c new file mode 100644 index 000000000..54831069a --- /dev/null +++ b/arch/mips/boot/compressed/decompress.c @@ -0,0 +1,119 @@ +/* + * Copyright 2001 MontaVista Software Inc. + * Author: Matt Porter <mporter@mvista.com> + * + * Copyright (C) 2009 Lemote, Inc. + * Author: Wu Zhangjin <wuzhangjin@gmail.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/string.h> + +#include <asm/addrspace.h> + +/* + * These two variables specify the free mem region + * that can be used for temporary malloc area + */ +unsigned long free_mem_ptr; +unsigned long free_mem_end_ptr; + +/* The linker tells us where the image is. */ +extern unsigned char __image_begin, __image_end; + +/* debug interfaces */ +#ifdef CONFIG_DEBUG_ZBOOT +extern void puts(const char *s); +extern void puthex(unsigned long long val); +#else +#define puts(s) do {} while (0) +#define puthex(val) do {} while (0) +#endif + +void error(char *x) +{ + puts("\n\n"); + puts(x); + puts("\n\n -- System halted"); + + while (1) + ; /* Halt */ +} + +/* activate the code for pre-boot environment */ +#define STATIC static + +#ifdef CONFIG_KERNEL_GZIP +#include "../../../../lib/decompress_inflate.c" +#endif + +#ifdef CONFIG_KERNEL_BZIP2 +#include "../../../../lib/decompress_bunzip2.c" +#endif + +#ifdef CONFIG_KERNEL_LZ4 +#include "../../../../lib/decompress_unlz4.c" +#endif + +#ifdef CONFIG_KERNEL_LZMA +#include "../../../../lib/decompress_unlzma.c" +#endif + +#ifdef CONFIG_KERNEL_LZO +#include "../../../../lib/decompress_unlzo.c" +#endif + +#ifdef CONFIG_KERNEL_XZ +#include "../../../../lib/decompress_unxz.c" +#endif + +unsigned long __stack_chk_guard; + +void __stack_chk_guard_setup(void) +{ + __stack_chk_guard = 0x000a0dff; +} + +void __stack_chk_fail(void) +{ + error("stack-protector: Kernel stack is corrupted\n"); +} + +void decompress_kernel(unsigned long boot_heap_start) +{ + unsigned long zimage_start, zimage_size; + + __stack_chk_guard_setup(); + + zimage_start = (unsigned long)(&__image_begin); + zimage_size = (unsigned long)(&__image_end) - + (unsigned long)(&__image_begin); + + puts("zimage at: "); + puthex(zimage_start); + puts(" "); + puthex(zimage_size + zimage_start); + puts("\n"); + + /* This area are prepared for mallocing when decompressing */ + free_mem_ptr = boot_heap_start; + free_mem_end_ptr = boot_heap_start + BOOT_HEAP_SIZE; + + /* Display standard Linux/MIPS boot prompt */ + puts("Uncompressing Linux at load address "); + puthex(VMLINUX_LOAD_ADDRESS_ULL); + puts("\n"); + + /* Decompress the kernel with according algorithm */ + decompress((char *)zimage_start, zimage_size, 0, 0, + (void *)VMLINUX_LOAD_ADDRESS_ULL, 0, error); + + /* FIXME: should we flush cache here? */ + puts("Now, booting the kernel...\n"); +} diff --git a/arch/mips/boot/compressed/dummy.c b/arch/mips/boot/compressed/dummy.c new file mode 100644 index 000000000..31dbf45bf --- /dev/null +++ b/arch/mips/boot/compressed/dummy.c @@ -0,0 +1,4 @@ +int main(void) +{ + return 0; +} diff --git a/arch/mips/boot/compressed/head.S b/arch/mips/boot/compressed/head.S new file mode 100644 index 000000000..409cb483a --- /dev/null +++ b/arch/mips/boot/compressed/head.S @@ -0,0 +1,56 @@ +/* + * 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) 1994, 1995 Waldorf Electronics + * Written by Ralf Baechle and Andreas Busse + * Copyright (C) 1995 - 1999 Ralf Baechle + * Copyright (C) 1996 Paul M. Antoine + * Modified for DECStation and hence R3000 support by Paul M. Antoine + * Further modifications by David S. Miller and Harald Koerfgen + * Copyright (C) 1999 Silicon Graphics, Inc. + */ + +#include <asm/asm.h> +#include <asm/regdef.h> + + .set noreorder + .cprestore + LEAF(start) +start: + /* Save boot rom start args */ + move s0, a0 + move s1, a1 + move s2, a2 + move s3, a3 + + /* Clear BSS */ + PTR_LA a0, _edata + PTR_LA a2, _end +1: sw zero, 0(a0) + bne a2, a0, 1b + addiu a0, a0, 4 + + PTR_LA a0, (.heap) /* heap address */ + PTR_LA sp, (.stack + 8192) /* stack address */ + + PTR_LA ra, 2f + PTR_LA k0, decompress_kernel + jr k0 + nop +2: + move a0, s0 + move a1, s1 + move a2, s2 + move a3, s3 + PTR_LI k0, KERNEL_ENTRY + jr k0 + nop +3: + b 3b + nop + END(start) + + .comm .heap,BOOT_HEAP_SIZE,4 + .comm .stack,4096*2,4 diff --git a/arch/mips/boot/compressed/ld.script b/arch/mips/boot/compressed/ld.script new file mode 100644 index 000000000..5a33409c7 --- /dev/null +++ b/arch/mips/boot/compressed/ld.script @@ -0,0 +1,53 @@ +/* + * ld.script for compressed kernel support of MIPS + * + * Copyright (C) 2009 Lemote Inc. + * Author: Wu Zhangjin <wuzhanjing@gmail.com> + * Copyright (C) 2010 "Wu Zhangjin" <wuzhanjing@gmail.com> + */ + +OUTPUT_ARCH(mips) +ENTRY(start) +PHDRS { + text PT_LOAD FLAGS(7); /* RWX */ +} +SECTIONS +{ + /* Text and read-only data */ + /* . = VMLINUZ_LOAD_ADDRESS; */ + .text : { + *(.text) + *(.rodata) + }: text + /* End of text section */ + + /* Writable data */ + .data : { + *(.data) + /* Put the compressed image here */ + __image_begin = .; + *(.image) + __image_end = .; + CONSTRUCTORS + } + . = ALIGN(16); + _edata = .; + /* End of data section */ + + /* BSS */ + .bss : { + *(.bss) + } + . = ALIGN(16); + _end = .; + + /* Sections to be discarded */ + /DISCARD/ : { + *(.MIPS.options) + *(.options) + *(.pdr) + *(.reginfo) + *(.comment) + *(.note) + } +} diff --git a/arch/mips/boot/compressed/string.c b/arch/mips/boot/compressed/string.c new file mode 100644 index 000000000..9de9885ac --- /dev/null +++ b/arch/mips/boot/compressed/string.c @@ -0,0 +1,28 @@ +/* + * arch/mips/boot/compressed/string.c + * + * Very small subset of simple string routines + */ + +#include <linux/types.h> + +void *memcpy(void *dest, const void *src, size_t n) +{ + int i; + const char *s = src; + char *d = dest; + + for (i = 0; i < n; i++) + d[i] = s[i]; + return dest; +} + +void *memset(void *s, int c, size_t n) +{ + int i; + char *ss = s; + + for (i = 0; i < n; i++) + ss[i] = c; + return s; +} diff --git a/arch/mips/boot/compressed/uart-16550.c b/arch/mips/boot/compressed/uart-16550.c new file mode 100644 index 000000000..237494b7a --- /dev/null +++ b/arch/mips/boot/compressed/uart-16550.c @@ -0,0 +1,63 @@ +/* + * 16550 compatible uart based serial debug support for zboot + */ + +#include <linux/types.h> +#include <linux/serial_reg.h> + +#include <asm/addrspace.h> + +#if defined(CONFIG_MACH_LOONGSON) || defined(CONFIG_MIPS_MALTA) +#define UART_BASE 0x1fd003f8 +#define PORT(offset) (CKSEG1ADDR(UART_BASE) + (offset)) +#endif + +#ifdef CONFIG_AR7 +#include <ar7.h> +#define PORT(offset) (CKSEG1ADDR(AR7_REGS_UART0) + (4 * offset)) +#endif + +#ifdef CONFIG_MACH_JZ4740 +#include <asm/mach-jz4740/base.h> +#define PORT(offset) (CKSEG1ADDR(JZ4740_UART0_BASE_ADDR) + (4 * offset)) +#endif + +#ifdef CONFIG_CPU_XLR +#define UART0_BASE 0x1EF14000 +#define PORT(offset) (CKSEG1ADDR(UART0_BASE) + (4 * offset)) +#define IOTYPE unsigned int +#endif + +#ifdef CONFIG_CPU_XLP +#define UART0_BASE 0x18030100 +#define PORT(offset) (CKSEG1ADDR(UART0_BASE) + (4 * offset)) +#define IOTYPE unsigned int +#endif + +#ifndef IOTYPE +#define IOTYPE char +#endif + +#ifndef PORT +#error please define the serial port address for your own machine +#endif + +static inline unsigned int serial_in(int offset) +{ + return *((volatile IOTYPE *)PORT(offset)) & 0xFF; +} + +static inline void serial_out(int offset, int value) +{ + *((volatile IOTYPE *)PORT(offset)) = value & 0xFF; +} + +void putc(char c) +{ + int timeout = 1000000; + + while (((serial_in(UART_LSR) & UART_LSR_THRE) == 0) && (timeout-- > 0)) + ; + + serial_out(UART_TX, c); +} diff --git a/arch/mips/boot/compressed/uart-alchemy.c b/arch/mips/boot/compressed/uart-alchemy.c new file mode 100644 index 000000000..4bee55b93 --- /dev/null +++ b/arch/mips/boot/compressed/uart-alchemy.c @@ -0,0 +1,6 @@ +#include <asm/mach-au1x00/au1000.h> + +void putc(char c) +{ + alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c); +} |