mirror of
git://projects.qi-hardware.com/xburst-tools.git
synced 2024-11-22 02:20:37 +02:00
Added Linux loader.
This commit is contained in:
Sergey Gridassov
Peter Zotov
parent
2a49d71627
commit
c7395700e4
@ -21,6 +21,7 @@
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void set_debug_level(int level);
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int get_debug_level();
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void hexdump(const void *data, size_t size);
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void debug(int level, const char *fmt, ...);
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78
include/elf.h
Normal file
78
include/elf.h
Normal file
@ -0,0 +1,78 @@
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#ifndef __ELF__H__
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#define __ELF__H__
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#include <stdint.h>
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typedef uint16_t Elf32_Half;
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typedef uint32_t Elf32_Word;
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typedef uint32_t Elf32_Addr;
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typedef uint32_t Elf32_Off;
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typedef int32_t Elf32_Sword;
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#define EI_NIDENT 16
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#define EI_MAG0 0
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#define EI_MAG1 1
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#define EI_MAG2 2
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#define EI_MAG3 3
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#define EI_CLASS 4
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#define EI_DATA 5
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#define EI_VERSION 6
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#define EI_PAD 7
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#define ELFMAG0 0x7F
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#define ELFMAG1 'E'
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#define ELFMAG2 'L'
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#define ELFMAG3 'F'
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#define ELFCLASSNONE 0
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#define ELFCLASS32 1
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#define ELFCLASS64 2
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#define ELFDATANONE 0
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#define ELFDATA2LSB 1
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#define ELFDATA2MSB 2
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#define ET_NONE 0
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#define ET_REL 1
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#define ET_EXEC 2
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#define ET_DYN 3
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#define ET_CORE 4
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#define EM_MIPS 8
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#define EV_NONE 0
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#define EV_CURRENT 1
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#define PT_NULL 0
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#define PT_LOAD 1
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typedef struct {
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unsigned char e_ident[EI_NIDENT];
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Elf32_Half e_type;
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Elf32_Half e_machine;
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Elf32_Word e_version;
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Elf32_Addr e_entry;
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Elf32_Off e_phoff;
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Elf32_Off e_shoff;
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Elf32_Word e_flags;
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Elf32_Half e_ehsize;
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Elf32_Half e_phentsize;
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Elf32_Half e_phnum;
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Elf32_Half e_shentsize;
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Elf32_Half e_shnum;
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Elf32_Half e_shstrndx;
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} Elf32_Ehdr;
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typedef struct {
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Elf32_Word p_type;
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Elf32_Off p_offset;
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Elf32_Addr p_vaddr;
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Elf32_Addr p_paddr;
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Elf32_Word p_filesz;
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Elf32_Word p_memsz;
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Elf32_Word p_flags;
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Elf32_Word p_align;
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} Elf32_Phdr;
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#endif
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10
include/elfldr.h
Normal file
10
include/elfldr.h
Normal file
@ -0,0 +1,10 @@
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#ifndef __ELFLDR__H__
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#define __ELFLDR__H__
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int load_elf(void *ingenic,
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const char *filename,
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const char *args,
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const char *initrd);
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#endif
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@ -2,4 +2,5 @@ AM_CFLAGS = --std=gnu99 -Wall -I../include
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bin_PROGRAMS = jzboot
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jzboot_SOURCES = debug.c devmgr.c ingenic.c main.c shell_lex.c \
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usbdev.c shell.c shell_builtins.c config.c spl_cmdset.c usbboot_cmdset.c
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usbdev.c shell.c shell_builtins.c config.c spl_cmdset.c \
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usbboot_cmdset.c elfldr.c
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35
src/debug.c
35
src/debug.c
@ -45,3 +45,38 @@ void debug(int level, const char *fmt, ...) {
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va_end(list);
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}
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void hexdump(const void *data, size_t size) {
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const unsigned char *bytes = data;
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for(int i = 0; i < size; i+= 16) {
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debug(LEVEL_DEBUG, "%04X ", i);
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int chunk_size = size - i;
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if(chunk_size > 16)
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chunk_size = 16;
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for(int j = 0; j < chunk_size; j++) {
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debug(LEVEL_DEBUG, "%02X ", bytes[i + j]);
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if(j == 7)
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debug(LEVEL_DEBUG, " ");
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}
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for(int j = 0; j < 16 - chunk_size; j++) {
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debug(LEVEL_DEBUG, " ");
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if(j == 8)
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debug(LEVEL_DEBUG, " ");
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}
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debug(LEVEL_DEBUG, "|");
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for(int j = 0; j < chunk_size; j++) {
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debug(LEVEL_DEBUG, "%c", isprint(bytes[i + j]) ? bytes[i + j] : '.');
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}
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debug(LEVEL_DEBUG, "|\n");
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}
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}
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318
src/elfldr.c
Normal file
318
src/elfldr.c
Normal file
@ -0,0 +1,318 @@
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#include <sys/stat.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include "debug.h"
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#include "elfldr.h"
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#include "elf.h"
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#include "ingenic.h"
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#define max(a, b) ((a) > (b) ? (a) : (b))
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#define ALIGN(a) ((a + 4095) & ~4095)
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#define TRAMP_ARGC 0 // command line argument count
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#define TRAMP_ARGV 1 // command line argument array
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#define TRAMP_ARG2 2
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#define TRAMP_ARG3 3
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#define TRAMP_ENTRY 4 // Kernel entry point
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static const uint32_t trampoline_template[] = {
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0x3c04ffff, // lui a0, 0xffff
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0x3484ffff, // ori a0,a0,0xffff
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0x3c05ffff, // lui a1, 0xffff
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0x34a5ffff, // ori a1,a1,0xffff
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0x3c06ffff, // lui a2, 0xffff
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0x34c6ffff, // ori a2,a2,0xffff
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0x3c07ffff, // lui a3, 0xffff
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0x34e7ffff, // ori a3,a3,0xffff
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0x3c08ffff, // lui t0, 0xffff
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0x3508ffff, // ori t0,t0,0xffff
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0x01000008, // jr t0
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0x00000000, // nop
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};
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static const unsigned char valid_ident[EI_PAD] = {
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[EI_MAG0] = ELFMAG0,
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[EI_MAG1] = ELFMAG1,
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[EI_MAG2] = ELFMAG2,
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[EI_MAG3] = ELFMAG3,
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[EI_CLASS] = ELFCLASS32,
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[EI_DATA] = ELFDATA2LSB,
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[EI_VERSION] = EV_CURRENT
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};
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static int load_segment(void *ingenic, void *data, uint32_t base, uint32_t filesz, uint32_t memsz) {
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uint32_t end = base + memsz, tail = memsz - filesz;
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int ret = 0;
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printf("Loading segment: base 0x%08X, file 0x%08X, mem 0x%08X\n", base, filesz, memsz);
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if(end > ingenic_sdram_size(ingenic) + SDRAM_BASE - STAGE2_CODESIZE) {
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fputs(" Segment doesn't fit into SDRAM\n", stderr);
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return -1;
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}
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if(filesz && ingenic_load_sdram(ingenic, data, base, filesz) == -1)
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return -1;
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if(tail) {
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char *dummy_data = malloc(tail);
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if(dummy_data == NULL)
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return -1;
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memset(dummy_data, 0, tail);
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ret = ingenic_load_sdram(ingenic, dummy_data, base + filesz, tail);
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free(dummy_data);
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}
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return ret;
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}
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static int load_elf_image(FILE *elf, void *ingenic, uint32_t *entry, uint32_t *end) {
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Elf32_Ehdr ehdr;
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Elf32_Phdr phdr;
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int i, ret;
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char *data;
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if(fread(&ehdr, 1, sizeof(Elf32_Ehdr), elf) != sizeof(Elf32_Ehdr)) {
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if(feof(elf))
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errno = EINVAL;
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return -1;
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}
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*entry = ehdr.e_entry;
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if(memcmp(ehdr.e_ident, valid_ident, EI_PAD) != 0 || ehdr.e_type != ET_EXEC || ehdr.e_machine != EM_MIPS || ehdr.e_version != EV_CURRENT
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|| ehdr.e_phoff == 0 || ehdr.e_phentsize != sizeof(Elf32_Phdr)) {
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fputs("Bad ELF identification\n", stderr);
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errno = EINVAL;
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return -1;
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}
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fseek(elf, ehdr.e_phoff, SEEK_SET);
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*end = 0;
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for(i = 0; i < ehdr.e_phnum; i++) {
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if(fread(&phdr, 1, sizeof(Elf32_Phdr), elf) != sizeof(Elf32_Phdr)) {
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if(feof(elf))
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errno = EINVAL;
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return -1;
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}
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if(phdr.p_type == PT_LOAD) {
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data = malloc(phdr.p_filesz);
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if(data == NULL)
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return -1;
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long save = ftell(elf);
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fseek(elf, phdr.p_offset, SEEK_SET);
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ret = fread(data, 1, phdr.p_filesz, elf);
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fseek(elf, save, SEEK_SET);
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if(ret != phdr.p_filesz) {
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free(data);
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if(feof(elf))
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errno = EINVAL;
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return -1;
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}
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ret = load_segment(ingenic, data, phdr.p_paddr, phdr.p_filesz, phdr.p_memsz);
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free(data);
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if(ret == -1)
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return -1;
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*end = max(phdr.p_paddr + phdr.p_memsz, *end);
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}
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}
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return 0;
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}
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static void trampoline_set(uint32_t *trampoline, int index,
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uint32_t value) {
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index *= 2;
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trampoline[index] = (trampoline[index] & 0xFFFF0000) | ((value & 0xFFFF0000) >> 16);
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trampoline[index + 1] = (trampoline[index + 1] & 0xFFFF0000) | (value & 0x0000FFFF);
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}
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static int load_args(void *ingenic, uint32_t base, const char *filename,
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const char *const *args, int *pargc, uint32_t *end) {
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size_t total_len = 0;
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int argc = 0;
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for(int i = 0; args[i]; i++) {
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size_t len = strlen(args[i]);
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total_len += len + 1;
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for(int j = 0; j < len; j++)
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if(args[i][j] == ' ')
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argc++;
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argc++;
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}
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*pargc = argc;
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*end = base + total_len + sizeof(uint32_t) * argc;
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uint32_t *buf = malloc(sizeof(uint32_t) * argc + total_len);
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if(buf == NULL)
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return -1;
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char *cmdline = (char *)(buf + argc);
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size_t off = 0;
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for(int i = 0; args[i]; i++) {
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size_t len = strlen(args[i]);
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memcpy(cmdline + off, args[i], len + 1);
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if(args[i + 1])
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cmdline[off + len] = ' ';
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off += len + 1;
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}
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printf("Compiled cmdline: '%s'\n", cmdline);
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uint32_t offset = 0;
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char *ptr = cmdline;
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for(int i = 0; i < argc; i++) {
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buf[i] = base + argc * sizeof(uint32_t) + offset;
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ptr = strchr(ptr, ' ');
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if(ptr == NULL)
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break;
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*ptr++ = 0;
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offset = ptr - cmdline;
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}
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int ret = load_segment(ingenic,
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buf,
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base,
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sizeof(uint32_t) * argc + total_len,
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sizeof(uint32_t) * argc + total_len);
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free(buf);
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return ret;
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}
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int load_elf(void *ingenic,
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const char *filename,
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const char *args,
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const char *initrd) {
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uint32_t entry, end, trampoline_base, args_base;
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uint32_t initrd_base, initrd_size;
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int argc;
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const char *all_args[4] = { filename, args, NULL, NULL };
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char initrd_args[64];
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printf(
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"Loading kernel %s:\n"
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" Command line: '%s'\n",
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filename,
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args
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);
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FILE *elf = fopen(filename, "rb");
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if(elf == NULL)
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return -1;
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int ret = load_elf_image(elf, ingenic, &entry, &end);
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fclose(elf);
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if(ret == -1)
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return -1;
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if(initrd) {
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struct stat statbuf;
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initrd_base = ALIGN(end);
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if(stat(initrd, &statbuf) == -1)
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return -1;
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initrd_size = statbuf.st_size;
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printf("Loading initrd to 0x%08X, size 0x%08X\n",
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initrd_base, initrd_size);
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end = initrd_base + initrd_size;
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if(end > ingenic_sdram_size(ingenic) + SDRAM_BASE - STAGE2_CODESIZE) {
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fputs(" Initrd doesn't fit into SDRAM\n", stderr);
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return -1;
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}
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if(ingenic_load_sdram_file(ingenic, initrd_base, initrd) == -1)
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return -1;
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snprintf(initrd_args, sizeof(initrd_args),
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"rd_start=0x%08X rd_size=0x%08X",
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initrd_base, initrd_size);
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all_args[2] = initrd_args;
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}
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args_base = ALIGN(end);
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if(load_args(ingenic, args_base, filename, all_args, &argc, &end) == -1)
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return -1;
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trampoline_base = ALIGN(end);
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end = trampoline_base + sizeof(trampoline_template);
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uint32_t *trampoline = malloc(sizeof(trampoline_template));
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if(trampoline == NULL)
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return -1;
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memcpy(trampoline, trampoline_template, sizeof(trampoline_template));
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trampoline_set(trampoline, TRAMP_ARGC, argc);
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trampoline_set(trampoline, TRAMP_ARGV, args_base);
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trampoline_set(trampoline, TRAMP_ARG2, 0);
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trampoline_set(trampoline, TRAMP_ARG3, 0);
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trampoline_set(trampoline, TRAMP_ENTRY, entry);
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ret = load_segment(ingenic, trampoline, trampoline_base, sizeof(trampoline_template), sizeof(trampoline_template));
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free(trampoline);
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if(ret == -1)
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return -1;
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printf("Image end: 0x%08X, entry: 0x%08X\n", end, entry);
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//return 0;
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return ingenic_go(ingenic, trampoline_base);
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}
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@ -67,40 +67,6 @@ static const struct {
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{ NULL, 0 }
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};
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static void hexdump(const void *data, size_t size) {
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const unsigned char *bytes = data;
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for(int i = 0; i < size; i+= 16) {
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debug(LEVEL_DEBUG, "%04X ", i);
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int chunk_size = size - i;
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if(chunk_size > 16)
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chunk_size = 16;
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for(int j = 0; j < chunk_size; j++) {
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debug(LEVEL_DEBUG, "%02X ", bytes[i + j]);
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if(j == 7)
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debug(LEVEL_DEBUG, " ");
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}
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for(int j = 0; j < 16 - chunk_size; j++) {
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debug(LEVEL_DEBUG, " ");
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if(j == 8)
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debug(LEVEL_DEBUG, " ");
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}
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debug(LEVEL_DEBUG, "|");
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for(int j = 0; j < chunk_size; j++) {
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debug(LEVEL_DEBUG, "%c", isprint(bytes[i + j]) ? bytes[i + j] : '.');
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}
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debug(LEVEL_DEBUG, "|\n");
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}
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}
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|
||||
static uint32_t ingenic_probe(void *usb_hndl) {
|
||||
char magic[9];
|
||||
|
||||
|
||||
@ -23,10 +23,12 @@
|
||||
#include "shell.h"
|
||||
#include "app_config.h"
|
||||
#include "ingenic.h"
|
||||
#include "elfldr.h"
|
||||
|
||||
static int usbboot_boot(shell_context_t *ctx, int argc, char *argv[]);
|
||||
static int usbboot_load(shell_context_t *ctx, int argc, char *argv[]);
|
||||
static int usbboot_go(shell_context_t *ctx, int argc, char *argv[]);
|
||||
static int usbboot_load_kernel(shell_context_t *ctx, int argc, char *argv[]);
|
||||
static int usbboot_nquery(shell_context_t *ctx, int argc, char *argv[]);
|
||||
static int usbboot_ndump(shell_context_t *ctx, int argc, char *argv[]);
|
||||
static int usbboot_nerase(shell_context_t *ctx, int argc, char *argv[]);
|
||||
@ -38,6 +40,7 @@ const shell_command_t usbboot_cmdset[] = {
|
||||
{ "boot", "Reconfigure stage2", usbboot_boot, NULL },
|
||||
{ "load", "Load file to SDRAM", usbboot_load, "<FILE> <BASE>" },
|
||||
{ "go", "Jump to <ADDRESS>", usbboot_go, "<ADDRESS>" },
|
||||
{ "load_kernel", "Load ELF kernel and initrd to memory", usbboot_load_kernel, "<KERNEL> <CMDLINE> [INITRAMFS]" },
|
||||
|
||||
{ "nquery", "Query NAND information", usbboot_nquery, "<DEVICE>" },
|
||||
{ "ndump", "Dump NAND to file", usbboot_ndump, "<DEVICE> <STARTPAGE> <PAGES> <FILE>" },
|
||||
@ -151,3 +154,9 @@ static int usbboot_nload(shell_context_t *ctx, int argc, char *argv[]) {
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int usbboot_load_kernel(shell_context_t *ctx, int argc, char *argv[]) {
|
||||
return load_elf(shell_device(ctx), argv[1], argv[2],
|
||||
argc == 4 ? argv[3] : NULL);
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user