diff options
Diffstat (limited to 'arch/x86_64')
| -rw-r--r-- | arch/x86_64/boot/compressed/Makefile | 5 | ||||
| -rw-r--r-- | arch/x86_64/boot/compressed/Makefile_64 | 30 | ||||
| -rw-r--r-- | arch/x86_64/boot/compressed/head_64.S | 311 | ||||
| -rw-r--r-- | arch/x86_64/boot/compressed/misc_64.c | 371 | ||||
| -rw-r--r-- | arch/x86_64/boot/compressed/vmlinux_64.lds | 44 | ||||
| -rw-r--r-- | arch/x86_64/boot/compressed/vmlinux_64.scr | 10 |
6 files changed, 0 insertions, 771 deletions
diff --git a/arch/x86_64/boot/compressed/Makefile b/arch/x86_64/boot/compressed/Makefile deleted file mode 100644 index 76ab5ca..0000000 --- a/arch/x86_64/boot/compressed/Makefile +++ /dev/null @@ -1,5 +0,0 @@ -ifeq ($(CONFIG_X86_32),y) -include ${srctree}/arch/x86/boot/compressed/Makefile_32 -else -include ${srctree}/arch/x86_64/boot/compressed/Makefile_64 -endif diff --git a/arch/x86_64/boot/compressed/Makefile_64 b/arch/x86_64/boot/compressed/Makefile_64 deleted file mode 100644 index 5bfd108..0000000 --- a/arch/x86_64/boot/compressed/Makefile_64 +++ /dev/null @@ -1,30 +0,0 @@ -# -# linux/arch/x86_64/boot/compressed/Makefile -# -# create a compressed vmlinux image from the original vmlinux -# - -targets := vmlinux vmlinux.bin vmlinux.bin.gz head_64.o misc_64.o piggy.o - -CFLAGS := -m64 -D__KERNEL__ $(LINUXINCLUDE) -O2 \ - -fno-strict-aliasing -fPIC -mcmodel=small \ - $(call cc-option, -ffreestanding) \ - $(call cc-option, -fno-stack-protector) -AFLAGS := $(CFLAGS) -D__ASSEMBLY__ -LDFLAGS := -m elf_x86_64 - -LDFLAGS_vmlinux := -T -$(obj)/vmlinux: $(src)/vmlinux_64.lds $(obj)/head_64.o $(obj)/misc_64.o $(obj)/piggy.o FORCE - $(call if_changed,ld) - @: - -$(obj)/vmlinux.bin: vmlinux FORCE - $(call if_changed,objcopy) - -$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE - $(call if_changed,gzip) - -LDFLAGS_piggy.o := -r --format binary --oformat elf64-x86-64 -T - -$(obj)/piggy.o: $(obj)/vmlinux_64.scr $(obj)/vmlinux.bin.gz FORCE - $(call if_changed,ld) diff --git a/arch/x86_64/boot/compressed/head_64.S b/arch/x86_64/boot/compressed/head_64.S deleted file mode 100644 index 4946764..0000000 --- a/arch/x86_64/boot/compressed/head_64.S +++ /dev/null @@ -1,311 +0,0 @@ -/* - * linux/boot/head.S - * - * Copyright (C) 1991, 1992, 1993 Linus Torvalds - */ - -/* - * head.S contains the 32-bit startup code. - * - * NOTE!!! Startup happens at absolute address 0x00001000, which is also where - * the page directory will exist. The startup code will be overwritten by - * the page directory. [According to comments etc elsewhere on a compressed - * kernel it will end up at 0x1000 + 1Mb I hope so as I assume this. - AC] - * - * Page 0 is deliberately kept safe, since System Management Mode code in - * laptops may need to access the BIOS data stored there. This is also - * useful for future device drivers that either access the BIOS via VM86 - * mode. - */ - -/* - * High loaded stuff by Hans Lermen & Werner Almesberger, Feb. 1996 - */ -.code32 -.text - -#include <linux/linkage.h> -#include <asm/segment.h> -#include <asm/pgtable.h> -#include <asm/page.h> -#include <asm/msr.h> - -.section ".text.head" - .code32 - .globl startup_32 - -startup_32: - cld - cli - movl $(__KERNEL_DS), %eax - movl %eax, %ds - movl %eax, %es - movl %eax, %ss - -/* Calculate the delta between where we were compiled to run - * at and where we were actually loaded at. This can only be done - * with a short local call on x86. Nothing else will tell us what - * address we are running at. The reserved chunk of the real-mode - * data at 0x1e4 (defined as a scratch field) are used as the stack - * for this calculation. Only 4 bytes are needed. - */ - leal (0x1e4+4)(%esi), %esp - call 1f -1: popl %ebp - subl $1b, %ebp - -/* setup a stack and make sure cpu supports long mode. */ - movl $user_stack_end, %eax - addl %ebp, %eax - movl %eax, %esp - - call verify_cpu - testl %eax, %eax - jnz no_longmode - -/* Compute the delta between where we were compiled to run at - * and where the code will actually run at. - */ -/* %ebp contains the address we are loaded at by the boot loader and %ebx - * contains the address where we should move the kernel image temporarily - * for safe in-place decompression. - */ - -#ifdef CONFIG_RELOCATABLE - movl %ebp, %ebx - addl $(LARGE_PAGE_SIZE -1), %ebx - andl $LARGE_PAGE_MASK, %ebx -#else - movl $CONFIG_PHYSICAL_START, %ebx -#endif - - /* Replace the compressed data size with the uncompressed size */ - subl input_len(%ebp), %ebx - movl output_len(%ebp), %eax - addl %eax, %ebx - /* Add 8 bytes for every 32K input block */ - shrl $12, %eax - addl %eax, %ebx - /* Add 32K + 18 bytes of extra slack and align on a 4K boundary */ - addl $(32768 + 18 + 4095), %ebx - andl $~4095, %ebx - -/* - * Prepare for entering 64 bit mode - */ - - /* Load new GDT with the 64bit segments using 32bit descriptor */ - leal gdt(%ebp), %eax - movl %eax, gdt+2(%ebp) - lgdt gdt(%ebp) - - /* Enable PAE mode */ - xorl %eax, %eax - orl $(1 << 5), %eax - movl %eax, %cr4 - - /* - * Build early 4G boot pagetable - */ - /* Initialize Page tables to 0*/ - leal pgtable(%ebx), %edi - xorl %eax, %eax - movl $((4096*6)/4), %ecx - rep stosl - - /* Build Level 4 */ - leal pgtable + 0(%ebx), %edi - leal 0x1007 (%edi), %eax - movl %eax, 0(%edi) - - /* Build Level 3 */ - leal pgtable + 0x1000(%ebx), %edi - leal 0x1007(%edi), %eax - movl $4, %ecx -1: movl %eax, 0x00(%edi) - addl $0x00001000, %eax - addl $8, %edi - decl %ecx - jnz 1b - - /* Build Level 2 */ - leal pgtable + 0x2000(%ebx), %edi - movl $0x00000183, %eax - movl $2048, %ecx -1: movl %eax, 0(%edi) - addl $0x00200000, %eax - addl $8, %edi - decl %ecx - jnz 1b - - /* Enable the boot page tables */ - leal pgtable(%ebx), %eax - movl %eax, %cr3 - - /* Enable Long mode in EFER (Extended Feature Enable Register) */ - movl $MSR_EFER, %ecx - rdmsr - btsl $_EFER_LME, %eax - wrmsr - - /* Setup for the jump to 64bit mode - * - * When the jump is performend we will be in long mode but - * in 32bit compatibility mode with EFER.LME = 1, CS.L = 0, CS.D = 1 - * (and in turn EFER.LMA = 1). To jump into 64bit mode we use - * the new gdt/idt that has __KERNEL_CS with CS.L = 1. - * We place all of the values on our mini stack so lret can - * used to perform that far jump. - */ - pushl $__KERNEL_CS - leal startup_64(%ebp), %eax - pushl %eax - - /* Enter paged protected Mode, activating Long Mode */ - movl $0x80000001, %eax /* Enable Paging and Protected mode */ - movl %eax, %cr0 - - /* Jump from 32bit compatibility mode into 64bit mode. */ - lret - -no_longmode: - /* This isn't an x86-64 CPU so hang */ -1: - hlt - jmp 1b - -#include "../../kernel/verify_cpu_64.S" - - /* Be careful here startup_64 needs to be at a predictable - * address so I can export it in an ELF header. Bootloaders - * should look at the ELF header to find this address, as - * it may change in the future. - */ - .code64 - .org 0x200 -ENTRY(startup_64) - /* We come here either from startup_32 or directly from a - * 64bit bootloader. If we come here from a bootloader we depend on - * an identity mapped page table being provied that maps our - * entire text+data+bss and hopefully all of memory. - */ - - /* Setup data segments. */ - xorl %eax, %eax - movl %eax, %ds - movl %eax, %es - movl %eax, %ss - movl %eax, %fs - movl %eax, %gs - lldt %ax - movl $0x20, %eax - ltr %ax - - /* Compute the decompressed kernel start address. It is where - * we were loaded at aligned to a 2M boundary. %rbp contains the - * decompressed kernel start address. - * - * If it is a relocatable kernel then decompress and run the kernel - * from load address aligned to 2MB addr, otherwise decompress and - * run the kernel from CONFIG_PHYSICAL_START - */ - - /* Start with the delta to where the kernel will run at. */ -#ifdef CONFIG_RELOCATABLE - leaq startup_32(%rip) /* - $startup_32 */, %rbp - addq $(LARGE_PAGE_SIZE - 1), %rbp - andq $LARGE_PAGE_MASK, %rbp - movq %rbp, %rbx -#else - movq $CONFIG_PHYSICAL_START, %rbp - movq %rbp, %rbx -#endif - - /* Replace the compressed data size with the uncompressed size */ - movl input_len(%rip), %eax - subq %rax, %rbx - movl output_len(%rip), %eax - addq %rax, %rbx - /* Add 8 bytes for every 32K input block */ - shrq $12, %rax - addq %rax, %rbx - /* Add 32K + 18 bytes of extra slack and align on a 4K boundary */ - addq $(32768 + 18 + 4095), %rbx - andq $~4095, %rbx - -/* Copy the compressed kernel to the end of our buffer - * where decompression in place becomes safe. - */ - leaq _end(%rip), %r8 - leaq _end(%rbx), %r9 - movq $_end /* - $startup_32 */, %rcx -1: subq $8, %r8 - subq $8, %r9 - movq 0(%r8), %rax - movq %rax, 0(%r9) - subq $8, %rcx - jnz 1b - -/* - * Jump to the relocated address. - */ - leaq relocated(%rbx), %rax - jmp *%rax - -.section ".text" -relocated: - -/* - * Clear BSS - */ - xorq %rax, %rax - leaq _edata(%rbx), %rdi - leaq _end(%rbx), %rcx - subq %rdi, %rcx - cld - rep - stosb - - /* Setup the stack */ - leaq user_stack_end(%rip), %rsp - - /* zero EFLAGS after setting rsp */ - pushq $0 - popfq - -/* - * Do the decompression, and jump to the new kernel.. - */ - pushq %rsi # Save the real mode argument - movq %rsi, %rdi # real mode address - leaq _heap(%rip), %rsi # _heap - leaq input_data(%rip), %rdx # input_data - movl input_len(%rip), %eax - movq %rax, %rcx # input_len - movq %rbp, %r8 # output - call decompress_kernel - popq %rsi - - -/* - * Jump to the decompressed kernel. - */ - jmp *%rbp - - .data -gdt: - .word gdt_end - gdt - .long gdt - .word 0 - .quad 0x0000000000000000 /* NULL descriptor */ - .quad 0x00af9a000000ffff /* __KERNEL_CS */ - .quad 0x00cf92000000ffff /* __KERNEL_DS */ - .quad 0x0080890000000000 /* TS descriptor */ - .quad 0x0000000000000000 /* TS continued */ -gdt_end: - .bss -/* Stack for uncompression */ - .balign 4 -user_stack: - .fill 4096,4,0 -user_stack_end: diff --git a/arch/x86_64/boot/compressed/misc_64.c b/arch/x86_64/boot/compressed/misc_64.c deleted file mode 100644 index f932b0e..0000000 --- a/arch/x86_64/boot/compressed/misc_64.c +++ /dev/null @@ -1,371 +0,0 @@ -/* - * misc.c - * - * This is a collection of several routines from gzip-1.0.3 - * adapted for Linux. - * - * malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994 - * puts by Nick Holloway 1993, better puts by Martin Mares 1995 - * High loaded stuff by Hans Lermen & Werner Almesberger, Feb. 1996 - */ - -#define _LINUX_STRING_H_ 1 -#define __LINUX_BITMAP_H 1 - -#include <linux/linkage.h> -#include <linux/screen_info.h> -#include <asm/io.h> -#include <asm/page.h> - -/* WARNING!! - * This code is compiled with -fPIC and it is relocated dynamically - * at run time, but no relocation processing is performed. - * This means that it is not safe to place pointers in static structures. - */ - -/* - * Getting to provable safe in place decompression is hard. - * Worst case behaviours need to be analized. - * Background information: - * - * The file layout is: - * magic[2] - * method[1] - * flags[1] - * timestamp[4] - * extraflags[1] - * os[1] - * compressed data blocks[N] - * crc[4] orig_len[4] - * - * resulting in 18 bytes of non compressed data overhead. - * - * Files divided into blocks - * 1 bit (last block flag) - * 2 bits (block type) - * - * 1 block occurs every 32K -1 bytes or when there 50% compression has been achieved. - * The smallest block type encoding is always used. - * - * stored: - * 32 bits length in bytes. - * - * fixed: - * magic fixed tree. - * symbols. - * - * dynamic: - * dynamic tree encoding. - * symbols. - * - * - * The buffer for decompression in place is the length of the - * uncompressed data, plus a small amount extra to keep the algorithm safe. - * The compressed data is placed at the end of the buffer. The output - * pointer is placed at the start of the buffer and the input pointer - * is placed where the compressed data starts. Problems will occur - * when the output pointer overruns the input pointer. - * - * The output pointer can only overrun the input pointer if the input - * pointer is moving faster than the output pointer. A condition only - * triggered by data whose compressed form is larger than the uncompressed - * form. - * - * The worst case at the block level is a growth of the compressed data - * of 5 bytes per 32767 bytes. - * - * The worst case internal to a compressed block is very hard to figure. - * The worst case can at least be boundined by having one bit that represents - * 32764 bytes and then all of the rest of the bytes representing the very - * very last byte. - * - * All of which is enough to compute an amount of extra data that is required - * to be safe. To avoid problems at the block level allocating 5 extra bytes - * per 32767 bytes of data is sufficient. To avoind problems internal to a block - * adding an extra 32767 bytes (the worst case uncompressed block size) is - * sufficient, to ensure that in the worst case the decompressed data for - * block will stop the byte before the compressed data for a block begins. - * To avoid problems with the compressed data's meta information an extra 18 - * bytes are needed. Leading to the formula: - * - * extra_bytes = (uncompressed_size >> 12) + 32768 + 18 + decompressor_size. - * - * Adding 8 bytes per 32K is a bit excessive but much easier to calculate. - * Adding 32768 instead of 32767 just makes for round numbers. - * Adding the decompressor_size is necessary as it musht live after all - * of the data as well. Last I measured the decompressor is about 14K. - * 10K of actuall data and 4K of bss. - * - */ - -/* - * gzip declarations - */ - -#define OF(args) args -#define STATIC static - -#undef memset -#undef memcpy -#define memzero(s, n) memset ((s), 0, (n)) - -typedef unsigned char uch; -typedef unsigned short ush; -typedef unsigned long ulg; - -#define WSIZE 0x80000000 /* Window size must be at least 32k, - * and a power of two - * We don't actually have a window just - * a huge output buffer so I report - * a 2G windows size, as that should - * always be larger than our output buffer. - */ - -static uch *inbuf; /* input buffer */ -static uch *window; /* Sliding window buffer, (and final output buffer) */ - -static unsigned insize; /* valid bytes in inbuf */ -static unsigned inptr; /* index of next byte to be processed in inbuf */ -static unsigned outcnt; /* bytes in output buffer */ - -/* gzip flag byte */ -#define ASCII_FLAG 0x01 /* bit 0 set: file probably ASCII text */ -#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */ -#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */ -#define ORIG_NAME 0x08 /* bit 3 set: original file name present */ -#define COMMENT 0x10 /* bit 4 set: file comment present */ -#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */ -#define RESERVED 0xC0 /* bit 6,7: reserved */ - -#define get_byte() (inptr < insize ? inbuf[inptr++] : fill_inbuf()) - -/* Diagnostic functions */ -#ifdef DEBUG -# define Assert(cond,msg) {if(!(cond)) error(msg);} -# define Trace(x) fprintf x -# define Tracev(x) {if (verbose) fprintf x ;} -# define Tracevv(x) {if (verbose>1) fprintf x ;} -# define Tracec(c,x) {if (verbose && (c)) fprintf x ;} -# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;} -#else -# define Assert(cond,msg) -# define Trace(x) -# define Tracev(x) -# define Tracevv(x) -# define Tracec(c,x) -# define Tracecv(c,x) -#endif - -static int fill_inbuf(void); -static void flush_window(void); -static void error(char *m); -static void gzip_mark(void **); -static void gzip_release(void **); - -/* - * This is set up by the setup-routine at boot-time - */ -static unsigned char *real_mode; /* Pointer to real-mode data */ - -#define RM_EXT_MEM_K (*(unsigned short *)(real_mode + 0x2)) -#ifndef STANDARD_MEMORY_BIOS_CALL -#define RM_ALT_MEM_K (*(unsigned long *)(real_mode + 0x1e0)) -#endif -#define RM_SCREEN_INFO (*(struct screen_info *)(real_mode+0)) - -extern unsigned char input_data[]; -extern int input_len; - -static long bytes_out = 0; - -static void *malloc(int size); -static void free(void *where); - -static void *memset(void *s, int c, unsigned n); -static void *memcpy(void *dest, const void *src, unsigned n); - -static void putstr(const char *); - -static long free_mem_ptr; -static long free_mem_end_ptr; - -#define HEAP_SIZE 0x7000 - -static char *vidmem = (char *)0xb8000; -static int vidport; -static int lines, cols; - -#include "../../../../lib/inflate.c" - -static void *malloc(int size) -{ - void *p; - - if (size <0) error("Malloc error"); - if (free_mem_ptr <= 0) error("Memory error"); - - free_mem_ptr = (free_mem_ptr + 3) & ~3; /* Align */ - - p = (void *)free_mem_ptr; - free_mem_ptr += size; - - if (free_mem_ptr >= free_mem_end_ptr) - error("Out of memory"); - - return p; -} - -static void free(void *where) -{ /* Don't care */ -} - -static void gzip_mark(void **ptr) -{ - *ptr = (void *) free_mem_ptr; -} - -static void gzip_release(void **ptr) -{ - free_mem_ptr = (long) *ptr; -} - -static void scroll(void) -{ - int i; - - memcpy ( vidmem, vidmem + cols * 2, ( lines - 1 ) * cols * 2 ); - for ( i = ( lines - 1 ) * cols * 2; i < lines * cols * 2; i += 2 ) - vidmem[i] = ' '; -} - -static void putstr(const char *s) -{ - int x,y,pos; - char c; - - x = RM_SCREEN_INFO.orig_x; - y = RM_SCREEN_INFO.orig_y; - - while ( ( c = *s++ ) != '\0' ) { - if ( c == '\n' ) { - x = 0; - if ( ++y >= lines ) { - scroll(); - y--; - } - } else { - vidmem [ ( x + cols * y ) * 2 ] = c; - if ( ++x >= cols ) { - x = 0; - if ( ++y >= lines ) { - scroll(); - y--; - } - } - } - } - - RM_SCREEN_INFO.orig_x = x; - RM_SCREEN_INFO.orig_y = y; - - pos = (x + cols * y) * 2; /* Update cursor position */ - outb_p(14, vidport); - outb_p(0xff & (pos >> 9), vidport+1); - outb_p(15, vidport); - outb_p(0xff & (pos >> 1), vidport+1); -} - -static void* memset(void* s, int c, unsigned n) -{ - int i; - char *ss = (char*)s; - - for (i=0;i<n;i++) ss[i] = c; - return s; -} - -static void* memcpy(void* dest, const void* src, unsigned n) -{ - int i; - char *d = (char *)dest, *s = (char *)src; - - for (i=0;i<n;i++) d[i] = s[i]; - return dest; -} - -/* =========================================================================== - * Fill the input buffer. This is called only when the buffer is empty - * and at least one byte is really needed. - */ -static int fill_inbuf(void) -{ - error("ran out of input data"); - return 0; -} - -/* =========================================================================== - * Write the output window window[0..outcnt-1] and update crc and bytes_out. - * (Used for the decompressed data only.) - */ -static void flush_window(void) -{ - /* With my window equal to my output buffer - * I only need to compute the crc here. - */ - ulg c = crc; /* temporary variable */ - unsigned n; - uch *in, ch; - - in = window; - for (n = 0; n < outcnt; n++) { - ch = *in++; - c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8); - } - crc = c; - bytes_out += (ulg)outcnt; - outcnt = 0; -} - -static void error(char *x) -{ - putstr("\n\n"); - putstr(x); - putstr("\n\n -- System halted"); - - while(1); /* Halt */ -} - -asmlinkage void decompress_kernel(void *rmode, unsigned long heap, - uch *input_data, unsigned long input_len, uch *output) -{ - real_mode = rmode; - - if (RM_SCREEN_INFO.orig_video_mode == 7) { - vidmem = (char *) 0xb0000; - vidport = 0x3b4; - } else { - vidmem = (char *) 0xb8000; - vidport = 0x3d4; - } - - lines = RM_SCREEN_INFO.orig_video_lines; - cols = RM_SCREEN_INFO.orig_video_cols; - - window = output; /* Output buffer (Normally at 1M) */ - free_mem_ptr = heap; /* Heap */ - free_mem_end_ptr = heap + HEAP_SIZE; - inbuf = input_data; /* Input buffer */ - insize = input_len; - inptr = 0; - - if ((ulg)output & (__KERNEL_ALIGN - 1)) - error("Destination address not 2M aligned"); - if ((ulg)output >= 0xffffffffffUL) - error("Destination address too large"); - - makecrc(); - putstr(".\nDecompressing Linux..."); - gunzip(); - putstr("done.\nBooting the kernel.\n"); - return; -} diff --git a/arch/x86_64/boot/compressed/vmlinux_64.lds b/arch/x86_64/boot/compressed/vmlinux_64.lds deleted file mode 100644 index 94c13e5..0000000 --- a/arch/x86_64/boot/compressed/vmlinux_64.lds +++ /dev/null @@ -1,44 +0,0 @@ -OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64") -OUTPUT_ARCH(i386:x86-64) -ENTRY(startup_64) -SECTIONS -{ - /* Be careful parts of head.S assume startup_32 is at - * address 0. - */ - . = 0; - .text : { - _head = . ; - *(.text.head) - _ehead = . ; - *(.text.compressed) - _text = .; /* Text */ - *(.text) - *(.text.*) - _etext = . ; - } - .rodata : { - _rodata = . ; - *(.rodata) /* read-only data */ - *(.rodata.*) - _erodata = . ; - } - .data : { - _data = . ; - *(.data) - *(.data.*) - _edata = . ; - } - .bss : { - _bss = . ; - *(.bss) - *(.bss.*) - *(COMMON) - . = ALIGN(8); - _end = . ; - . = ALIGN(4096); - pgtable = . ; - . = . + 4096 * 6; - _heap = .; - } -} diff --git a/arch/x86_64/boot/compressed/vmlinux_64.scr b/arch/x86_64/boot/compressed/vmlinux_64.scr deleted file mode 100644 index bd1429c..0000000 --- a/arch/x86_64/boot/compressed/vmlinux_64.scr +++ /dev/null @@ -1,10 +0,0 @@ -SECTIONS -{ - .text.compressed : { - input_len = .; - LONG(input_data_end - input_data) input_data = .; - *(.data) - output_len = . - 4; - input_data_end = .; - } -} |