bootboot: General cleanup
This commit is contained in:
mintsuki
parent
99be5e2df5
commit
93cd5b1de3
@ -140,6 +140,30 @@ uint32_t get_crc32(void *_stream, size_t len) {
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return ret;
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}
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uint32_t oct2bin(uint8_t *str, uint32_t max) {
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uint32_t value = 0;
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while (max-- > 0) {
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value <<= 3;
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value += *str++ - '0';
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}
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return value;
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}
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uint32_t hex2bin(uint8_t *str, uint32_t size) {
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uint32_t value = 0;
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while (size-- > 0) {
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value <<= 4;
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if (*str >= '0' && *str <= '9')
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value += (uint32_t)((*str) - '0');
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else if (*str >= 'A' && *str <= 'F')
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value += (uint32_t)((*str) - 'A' + 10);
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else if (*str >= 'a' && *str <= 'f')
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value += (uint32_t)((*str) - 'a' + 10);
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str++;
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}
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return value;
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}
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#if uefi == 1
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bool efi_boot_services_exited = false;
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@ -38,6 +38,9 @@ bool parse_resolution(size_t *width, size_t *height, size_t *bpp, const char *bu
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uint32_t get_crc32(void *_stream, size_t len);
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uint32_t oct2bin(uint8_t *str, uint32_t max);
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uint32_t hex2bin(uint8_t *str, uint32_t size);
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uint64_t sqrt(uint64_t a_nInput);
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size_t get_trailing_zeros(uint64_t val);
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@ -25,16 +25,15 @@
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#include <mm/pmm.h>
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#include <drivers/vga_textmode.h>
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__attribute__((noreturn)) void bootboot_spinup(
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pagemap_t *pagemap,
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uint64_t entry_point, uint64_t stack,
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size_t numcores, struct smp_information* cores);
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#define BOOTBOOT_FB 0xfffffffffc000000
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#define BOOTBOOT_INFO 0xffffffffffe00000
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#define BOOTBOOT_ENV 0xffffffffffe01000
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#define BOOTBOOT_CORE 0xffffffffffe02000
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#define _emitenv(e) do { \
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if (envoff >= 4095) { \
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panic("bootboot: too much env data!"); \
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} \
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env[envoff++] = e; \
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} while (false);
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#define KOFFSET(type, off) (type)&kernel[(off)]
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#define ESECTION(idx) KOFFSET(struct elf64_shdr*, elf_header->shoff + elf_header->shdr_size * (idx))
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__attribute__((noreturn)) void bootboot_spinup_32(
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uint32_t pagemap_top_lv,
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@ -42,37 +41,34 @@ __attribute__((noreturn)) void bootboot_spinup_32(
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uint32_t stack_lo, uint32_t stack_hi);
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void bootboot_load(char *config) {
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#if bios
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void *efi_system_table = NULL;
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#elif uefi
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void *efi_system_table = gST;
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#endif
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uint64_t fb_vaddr = BOOTBOOT_FB;
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uint64_t struct_vaddr = BOOTBOOT_INFO;
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uint64_t env_vaddr = BOOTBOOT_ENV;
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uint64_t init_stack_size = ~0;
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uint64_t init_stack_size = (uint64_t)-1;
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/// Config ///
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char *kernel_path = config_get_value(config, 0, "KERNEL_PATH");
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char *initrd = config_get_value(config, 0, "INITRD_PATH");
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if (initrd == NULL) {
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initrd = kernel_path;
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kernel_path = NULL;
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}
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if (kernel_path == NULL && initrd == NULL)
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if (kernel_path == NULL && initrd == NULL) {
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panic("bootboot: no KERNEL_PATH or INITRD_PATH specified!");
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}
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/// Initrd loading ///
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file_t bootboot_initrd_file;
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struct initrd_file bootboot_initrd_file;
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uint64_t initrd_start = 0, initrd_size = 0;
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if (initrd) {
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struct file_handle* initrd_file;
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if ((initrd_file = uri_open(initrd)) == NULL)
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panic("bootboot: Failed to open initrd with path `%s`. Is the path correct?\n", initrd);
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struct file_handle *initrd_file;
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if ((initrd_file = uri_open(initrd)) == NULL) {
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panic("bootboot: Failed to open initrd with path `%s`. Is the path correct?", initrd);
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}
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uint8_t* initrd_data = freadall(initrd_file, MEMMAP_KERNEL_AND_MODULES);
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uint8_t *initrd_data = freadall(initrd_file, MEMMAP_KERNEL_AND_MODULES);
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initrd_size = initrd_file->size;
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initrd_start = (uint64_t)(size_t)initrd_data;
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fclose(initrd_file);
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@ -83,15 +79,13 @@ void bootboot_load(char *config) {
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}
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/// Load bootboot config ///
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#define _emitenv(e) do { \
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if(envoff >= 4095) panic("bootboot: too much env data!"); \
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env[envoff++] = e; \
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} while (false);
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uint8_t* env = (uint8_t*)ext_mem_alloc_type_aligned(4096, MEMMAP_BOOTLOADER_RECLAIMABLE, 4096);
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uint8_t *env = ext_mem_alloc_type_aligned(4096, MEMMAP_BOOTLOADER_RECLAIMABLE, 4096);
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uint64_t envoff = 0;
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do {
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file_t conf = initrd_open_auto(bootboot_initrd_file, "sys/config");
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if (!conf.data) break;
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struct initrd_file conf = initrd_open_auto(bootboot_initrd_file, "sys/config");
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if (!conf.data) {
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break;
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}
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uint8_t state = 0;
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uint8_t ipeq = 0;
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@ -100,7 +94,7 @@ void bootboot_load(char *config) {
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// state 1: precomment
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// state 2: comment
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for (uint64_t inoff = 0;inoff < conf.size;inoff++) {
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for (uint64_t inoff = 0; inoff < conf.size; inoff++) {
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if (conf.data[inoff] == ' ' && !(state == 0 && ipeq == 2)) continue;
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if (conf.data[inoff] != ' ' && state == 0 && ipeq == 1) { ipeq = 2; }
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if (conf.data[inoff] == '/' && state == 1) { state = 2; continue; }
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@ -114,94 +108,111 @@ void bootboot_load(char *config) {
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}
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} while (false);
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_emitenv(0);
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print("env: ---------\n%s\n--------\n", env);
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printv("env: ---------\n%s\n--------\n", env);
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/// Kernel loading code ///
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uint8_t* kernel;
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uint8_t *kernel;
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if (kernel_path) {
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print("bootboot: Loading kernel `%s`...\n", kernel_path);
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struct file_handle* kernel_file;
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struct file_handle *kernel_file;
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if ((kernel_file = uri_open(kernel_path)) == NULL)
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panic("bootboot: Failed to open kernel with path `%s`. Is the path correct?\n", kernel_path);
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panic("bootboot: Failed to open kernel with path `%s`. Is the path correct?", kernel_path);
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kernel = freadall(kernel_file, MEMMAP_KERNEL_AND_MODULES);
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fclose(kernel_file);
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} else {
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const char* corefile = config_get_value((char*)env, 0, "kernel");
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if (!corefile) corefile = "sys/core";
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file_t file = initrd_open_auto(bootboot_initrd_file, corefile);
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const char *corefile = config_get_value((char *)env, 0, "kernel");
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if (!corefile) {
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corefile = "sys/core";
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}
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struct initrd_file file = initrd_open_auto(bootboot_initrd_file, corefile);
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kernel = file.data;
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if (!file.size) panic("bootboot: cannot find the kernel!");
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if (!file.size) {
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panic("bootboot: cannot find the kernel!");
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}
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}
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/// Memory mappings ///
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pagemap_t pmap = new_pagemap(4);
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/// Load kernel ///
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uint64_t entry, top, slide, rangecount, physbase, virtbase = 0;
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struct elf_range* ranges;
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uint64_t entry, top, physbase, virtbase;
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{
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if (elf64_load(
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kernel, &entry, &top, &slide, MEMMAP_KERNEL_AND_MODULES,
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false, false, &ranges, &rangecount, true, &physbase, &virtbase)) {
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kernel, &entry, &top, NULL, MEMMAP_KERNEL_AND_MODULES,
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false, false, NULL, NULL, true, &physbase, &virtbase)) {
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panic("bootboot: elf64 load failed");
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}
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for (uint64_t mapvirt = virtbase, mapphys = physbase; mapphys < top;mapvirt += 0x1000, mapphys += 0x1000) {
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for (uint64_t mapvirt = virtbase, mapphys = physbase; mapphys < top; mapvirt += 0x1000, mapphys += 0x1000) {
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map_page(pmap, mapvirt, mapphys, VMM_FLAG_PRESENT | VMM_FLAG_WRITE, false);
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}
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}
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/// Funky macros ///
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#define KOFFSET(type, off) (type)&kernel[(off)]
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#define ESECTION(idx) KOFFSET(struct elf64_shdr*, elf_header->shoff + elf_header->shdr_size * (idx))
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/// Bootboot symbols ///
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struct elf64_hdr* elf_header = (struct elf64_hdr*)kernel;
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struct elf64_shdr* section_header_strings_section = ESECTION(elf_header->shstrndx);
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char* section_header_strings = KOFFSET(char*, section_header_strings_section->sh_offset);
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struct elf64_shdr* symbol_table = NULL;
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struct elf64_shdr* string_table = NULL;
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for(uint32_t i = 0; i < elf_header->sh_num; i++){
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struct elf64_shdr* section_header = ESECTION(i);
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char* secname = §ion_header_strings[section_header->sh_name];
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if(!strcmp(secname, ".symtab")) symbol_table = section_header;
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if(!strcmp(secname, ".strtab")) string_table = section_header;
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}
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if (!symbol_table || !string_table) {
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print("bootboot: warning: no symbol/string tables in the ELF!\n");
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} else {
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struct elf64_sym* symbols = KOFFSET(struct elf64_sym*, symbol_table->sh_offset);
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char* symbol_strings = KOFFSET(char*, string_table->sh_offset);
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for (uint32_t i = 0, symcount = symbol_table->sh_size / sizeof(struct elf64_sym);i < symcount;i++) {
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char* elf_sym = &symbol_strings[symbols[i].st_name];
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uint64_t symaddr = symbols[i].st_value;
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struct elf64_hdr *elf_header = (struct elf64_hdr *)kernel;
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struct elf64_shdr *section_header_strings_section = ESECTION(elf_header->shstrndx);
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char *section_header_strings = KOFFSET(char *, section_header_strings_section->sh_offset);
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if(!strcmp(elf_sym, "bootboot")) struct_vaddr = symaddr;
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if(!strcmp(elf_sym, "environment")) env_vaddr = symaddr;
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if(!strcmp(elf_sym, "fb")) fb_vaddr = symaddr;
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if(!strcmp(elf_sym, "initstack")) init_stack_size = symaddr;
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struct elf64_shdr *symbol_table = NULL;
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struct elf64_shdr *string_table = NULL;
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for (uint32_t i = 0; i < elf_header->sh_num; i++){
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struct elf64_shdr *section_header = ESECTION(i);
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char *secname = §ion_header_strings[section_header->sh_name];
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if (!strcmp(secname, ".symtab")) {
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symbol_table = section_header;
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}
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if (!strcmp(secname, ".strtab")) {
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string_table = section_header;
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}
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}
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if (init_stack_size == ~0UL) {
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if (!symbol_table || !string_table) {
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print("bootboot: warning: no symbol/string tables in the ELF!\n");
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} else {
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struct elf64_sym *symbols = KOFFSET(struct elf64_sym *, symbol_table->sh_offset);
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char *symbol_strings = KOFFSET(char *, string_table->sh_offset);
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for (uint32_t i = 0, symcount = symbol_table->sh_size / sizeof(struct elf64_sym); i < symcount; i++) {
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char *elf_sym = &symbol_strings[symbols[i].st_name];
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uint64_t symaddr = symbols[i].st_value;
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if (!strcmp(elf_sym, "bootboot")) {
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struct_vaddr = symaddr;
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}
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if (!strcmp(elf_sym, "environment")) {
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env_vaddr = symaddr;
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}
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if (!strcmp(elf_sym, "fb")) {
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fb_vaddr = symaddr;
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}
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if (!strcmp(elf_sym, "initstack")) {
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init_stack_size = symaddr;
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}
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}
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}
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if (init_stack_size == (uint64_t)-1) {
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print("bootboot: warning: no init stack size entered, assuming 1024\n");
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print("1024 is really small, specify more using initstack=size ini initrd;\n");
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init_stack_size = 1024;
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delay(1000000);
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}
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printv("bootboot: mapping struct to %X\n", struct_vaddr);
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printv("bootboot: mapping environemnt to %X\n", env_vaddr);
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printv("bootboot: mapping framebuffer to %X\n", fb_vaddr);
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printv("bootboot: the init stack is %X bytes\n", init_stack_size);;
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/// Bootboot structure ///
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BOOTBOOT* bootboot = (BOOTBOOT*)ext_mem_alloc_type_aligned(4096, MEMMAP_BOOTLOADER_RECLAIMABLE, 4096);
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map_page(pmap, struct_vaddr, (uint64_t)(size_t)bootboot, VMM_FLAG_PRESENT | VMM_FLAG_WRITE, false);
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BOOTBOOT *bootboot = ext_mem_alloc_type_aligned(4096, MEMMAP_BOOTLOADER_RECLAIMABLE, 4096);
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map_page(pmap, struct_vaddr, (uintptr_t)bootboot, VMM_FLAG_PRESENT | VMM_FLAG_WRITE, false);
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/// Environment ///
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{
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map_page(pmap, env_vaddr, (uint64_t)(size_t)env, VMM_FLAG_PRESENT | VMM_FLAG_WRITE, false);
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map_page(pmap, env_vaddr, (uintptr_t)env, VMM_FLAG_PRESENT | VMM_FLAG_WRITE, false);
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uint32_t index = 0, offset = 0;
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char* cfgent = NULL;
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char *cfgent = NULL;
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do {
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cfgent = config_get_value(config, index++, "BOOTBOOT_ENV");
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if (cfgent) {
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@ -226,19 +237,21 @@ void bootboot_load(char *config) {
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size_t fbwidth = 0, fbheight = 0, fbbpp = 32;
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struct fb_info fbi;
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char *resolution = config_get_value(config, 0, "RESOLUTION");
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if (resolution != NULL)
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if (resolution != NULL) {
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parse_resolution(&fbwidth, &fbheight, &fbbpp, resolution);
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}
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term_deinit();
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fb_init(&fbi, fbwidth, fbheight, fbbpp);
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uint64_t fb_size = fbi.framebuffer_height * fbi.framebuffer_pitch;
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for (uint64_t current = 0;current < fb_size;current += 0x1000) {
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for (uint64_t current = 0; current < fb_size; current += 0x1000) {
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map_page(pmap, fb_vaddr + current, fbi.framebuffer_addr + current, VMM_FLAG_PRESENT | VMM_FLAG_WRITE, false);
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}
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/// Header info ///
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memcpy(bootboot->magic, "BOOT", 4);
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#if bios
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bootboot->protocol = 2 | (0 << 2);
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#elif uefi
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@ -248,11 +261,11 @@ void bootboot_load(char *config) {
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/// SMP info ///
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size_t numcores;
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uint32_t bsplapic;
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volatile struct smp_information* cores;
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init_smp(0, (void**)&cores, &numcores, &bsplapic, true, false, pmap, false, false);
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volatile struct smp_information *cores;
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init_smp(0, (void **)&cores, &numcores, &bsplapic, true, false, pmap, false, false);
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bootboot->numcores = numcores;
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bootboot->bspid = bsplapic;
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for (size_t i = 0;i < numcores;i++) {
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for (size_t i = 0; i < numcores; i++) {
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cores[i].stack_addr = ((uint64_t)(size_t)ext_mem_alloc(init_stack_size)) + init_stack_size;
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}
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@ -269,7 +282,6 @@ void bootboot_load(char *config) {
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bootboot->datetime[6] = int_to_bcd(second);
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bootboot->datetime[7] = 0;
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/// Ramdisk ///
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bootboot->initrd_ptr = initrd_start;
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bootboot->initrd_size = initrd_size;
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@ -286,25 +298,39 @@ void bootboot_load(char *config) {
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uint64_t smbios_entry_32 = 0, smbios_entry_64 = 0;
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acpi_get_smbios((void **)&smbios_entry_32, (void **)&smbios_entry_64);
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bootboot->arch.x86_64.acpi_ptr = (uint64_t)(size_t)acpi_get_rsdp();
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if (smbios_entry_64) bootboot->arch.x86_64.smbi_ptr = smbios_entry_64;
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else if (smbios_entry_32) bootboot->arch.x86_64.smbi_ptr = smbios_entry_32;
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else bootboot->arch.x86_64.smbi_ptr = 0;
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bootboot->arch.x86_64.efi_ptr = (uint64_t)(size_t)efi_system_table;
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bootboot->arch.x86_64.acpi_ptr = (uintptr_t)acpi_get_rsdp();
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if (smbios_entry_64) {
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bootboot->arch.x86_64.smbi_ptr = smbios_entry_64;
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} else if (smbios_entry_32) {
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bootboot->arch.x86_64.smbi_ptr = smbios_entry_32;
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} else {
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bootboot->arch.x86_64.smbi_ptr = 0;
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}
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#if uefi == 1
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bootboot->arch.x86_64.efi_ptr = (uintptr_t)gST;
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#elif bios == 1
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bootboot->arch.x86_64.efi_ptr = 0;
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#endif
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bootboot->arch.x86_64.mp_ptr = 0;
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/// Memory map ///
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{
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size_t mmapent;
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struct e820_entry_t* e820e = get_memmap(&mmapent);
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if (mmapent > 248) {
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panic("Too much memory entries! our god bzt decided that %d entries is too much, max is 248", mmapent);
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panic("Too many memory map entries");
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}
|
||||
for (uint32_t i = 0;i < mmapent;i++) {
|
||||
uint32_t btype = 0;
|
||||
if (e820e[i].type == 1) btype = 1;
|
||||
if (e820e[i].type == 3) btype = 2;
|
||||
if (e820e[i].type == 4) btype = 2;
|
||||
for (size_t i = 0; i < mmapent; i++) {
|
||||
uint32_t btype;
|
||||
|
||||
switch (e820e[i].type) {
|
||||
case 1: btype = 1; break;
|
||||
case 3: case 4: btype = 2; break;
|
||||
default: btype = 0; break;
|
||||
}
|
||||
|
||||
bootboot->mmap[i].size = (e820e[i].length & ~0xF) | btype;
|
||||
bootboot->mmap[i].ptr = e820e[i].base;
|
||||
@ -328,7 +354,7 @@ void bootboot_load(char *config) {
|
||||
|
||||
irq_flush_type = IRQ_PIC_APIC_FLUSH;
|
||||
|
||||
for (size_t i = 0;i < numcores;i++) {
|
||||
for (size_t i = 0; i < numcores; i++) {
|
||||
cores[i].extra_argument = 0;
|
||||
cores[i].goto_address = entry;
|
||||
}
|
||||
@ -337,5 +363,4 @@ void bootboot_load(char *config) {
|
||||
(uint32_t)(uintptr_t)pmap.top_level,
|
||||
(uint32_t)entry, (uint32_t)(entry >> 32),
|
||||
(uint32_t)cores[0].stack_addr, (uint32_t)(cores[0].stack_addr >> 32));
|
||||
|
||||
}
|
||||
|
||||
@ -1,75 +1,83 @@
|
||||
#include "lib/print.h"
|
||||
#include <stdint.h>
|
||||
#include <stddef.h>
|
||||
#include <stdbool.h>
|
||||
#include <protos/bootboot/initrd.h>
|
||||
#include <lib/libc.h>
|
||||
#include <stdint.h>
|
||||
#include <lib/blib.h>
|
||||
#include <lib/print.h>
|
||||
|
||||
#define HPODC_MAGIC "070707"
|
||||
|
||||
#define _offset(cnt) do { offset += (cnt); if (offset > file.size) return (struct initrd_file){0}; } while (false);
|
||||
#define _atoffset() (&file.data[offset])
|
||||
#define _must(n) do { if ((offset + (n)) > file.size) return (struct initrd_file){0}; } while (false);
|
||||
|
||||
/**
|
||||
* cpio archive
|
||||
*/
|
||||
INITRD_HANDLER(cpio) {
|
||||
/// Some macros///
|
||||
#define _offset(cnt) do { offset += (cnt); if (offset > file.size) return (file_t){ 0, NULL }; } while (false);
|
||||
#define _atoffset() (&file.data[offset])
|
||||
#define _must(n) do { if ((offset + (n)) > file.size) return (file_t){ 0, NULL }; } while (false);
|
||||
uint64_t offset = 0;
|
||||
if (file.size < 6) return (file_t){ 0, NULL };
|
||||
if (file.size < 6) {
|
||||
return (struct initrd_file){0};
|
||||
}
|
||||
|
||||
/// Check magic ///
|
||||
// this may be a bit unclear, but this checks if the file even **has** a cpio header
|
||||
if (memcmp(file.data,"070701",6) && memcmp(file.data, "070702", 6) && memcmp(file.data, "070707", 6))
|
||||
return (file_t){ 0, NULL };
|
||||
|
||||
if (memcmp(file.data, "070701", 6) && memcmp(file.data, "070702", 6) && memcmp(file.data, "070707", 6)) {
|
||||
return (struct initrd_file){0};
|
||||
}
|
||||
|
||||
/// Some variables ///
|
||||
uint64_t path_name_size = strlen(path);
|
||||
size_t path_name_size = strlen(path);
|
||||
|
||||
/// hpodc archive ///
|
||||
while (!memcmp(_atoffset(), HPODC_MAGIC, 6)) {
|
||||
_must(22);
|
||||
uint32_t name_size = oct2bin(_atoffset()+ 8 * 6 + 11, 6);
|
||||
uint32_t file_size = oct2bin(_atoffset()+ 8 * 6 + 11 + 6, 11);
|
||||
uint32_t name_size = oct2bin(_atoffset() + 8 * 6 + 11, 6);
|
||||
uint32_t file_size = oct2bin(_atoffset() + 8 * 6 + 11 + 6, 11);
|
||||
_must(9 * 6 + 2 * 11 + name_size);
|
||||
|
||||
uint8_t* target_path = _atoffset() + 9 * 6 + 2 * 11;
|
||||
uint8_t *target_path = _atoffset() + 9 * 6 + 2 * 11;
|
||||
|
||||
if (name_size > 2 && target_path[0] == '.' && target_path[1] == '/') {
|
||||
target_path += 2;
|
||||
}
|
||||
|
||||
if (!memcmp(target_path, path, path_name_size + 1)) {
|
||||
return (file_t){
|
||||
return (struct initrd_file){
|
||||
file_size,
|
||||
_atoffset() + 9 * 6 + 2 * 11 + name_size,
|
||||
};
|
||||
}
|
||||
|
||||
_offset(76 + name_size + file_size);
|
||||
}
|
||||
|
||||
offset = 0;
|
||||
|
||||
// newc and crc archive
|
||||
while(!memcmp(_atoffset(), "07070", 5)){
|
||||
while (!memcmp(_atoffset(), "07070", 5)) {
|
||||
uint32_t file_size = hex2bin(_atoffset() + 8 * 6 + 6, 8);
|
||||
uint32_t name_size = hex2bin(_atoffset() + 8 * 11 + 6, 8);
|
||||
|
||||
uint8_t* target_path = _atoffset() + 110;
|
||||
uint8_t *target_path = _atoffset() + 110;
|
||||
|
||||
if (name_size > 2 && target_path[0] == '.' && target_path[1] == '/') {
|
||||
target_path += 2;
|
||||
}
|
||||
|
||||
|
||||
if (!memcmp(target_path, path, path_name_size + 1)) {
|
||||
uint8_t buf[9];
|
||||
memcpy(buf, _atoffset() + 8 * 11 + 6, 8);
|
||||
buf[8] = 0;
|
||||
return (file_t){
|
||||
return (struct initrd_file){
|
||||
file_size,
|
||||
(_atoffset() + ((110 + name_size + 3) / 4) * 4),
|
||||
};
|
||||
}
|
||||
|
||||
_offset(((110 + name_size + 3) / 4) * 4 + ((file_size + 3) / 4) * 4);
|
||||
}
|
||||
char buf[9];
|
||||
memcpy(buf, _atoffset(), 8);
|
||||
buf[8] = 0;
|
||||
return (file_t){ 0, NULL };
|
||||
}
|
||||
|
||||
return (struct initrd_file){0};
|
||||
}
|
||||
|
||||
@ -1,72 +1,63 @@
|
||||
#include <stdint.h>
|
||||
#include <stddef.h>
|
||||
#include <protos/bootboot/initrd.h>
|
||||
#include <lib/print.h>
|
||||
#include <lib/libc.h>
|
||||
#include <lib/blib.h>
|
||||
|
||||
|
||||
INITRD_HANDLER(jamesm);
|
||||
INITRD_HANDLER(ustar);
|
||||
INITRD_HANDLER(cpio);
|
||||
|
||||
INITRD_HANDLER(auto) {
|
||||
#define DETECT_FAILED panic("bootboot: cannot read file `%s`: cannot detect initrd type (only ustar, cpio and jamesm is supported).", path)
|
||||
if (file.size < 4) DETECT_FAILED;
|
||||
if (!memcmp(file.data, "\x7f""ELF", 4)) {
|
||||
|
||||
INITRD_HANDLER(auto) {
|
||||
if (file.size < 4) {
|
||||
DETECT_FAILED;
|
||||
}
|
||||
|
||||
if (!memcmp(file.data, "\177ELF", 4)) {
|
||||
if (strcmp("sys/core", path) == 0) {
|
||||
printv("bootboot: using ELF as initrd to open sys/core\n");
|
||||
return file;
|
||||
}
|
||||
return (file_t){0, NULL};
|
||||
return (struct initrd_file){0};
|
||||
}
|
||||
if (file.size < 5) DETECT_FAILED;
|
||||
|
||||
if (file.size < 5) {
|
||||
DETECT_FAILED;
|
||||
}
|
||||
|
||||
if (file.data[4] == 0xBF) {
|
||||
file_t jamesm_attempt = initrd_open_jamesm(file, path);
|
||||
struct initrd_file jamesm_attempt = initrd_open_jamesm(file, path);
|
||||
if (jamesm_attempt.data) {
|
||||
printv("bootboot: jamesm matched when reading file `%s`\n", path);
|
||||
return jamesm_attempt;
|
||||
}
|
||||
panic("bootboot: cannot read file `%s`: no such file or directory", path);
|
||||
}
|
||||
|
||||
if (!memcmp("07070", file.data, 5)) {
|
||||
file_t cpio_attempt = initrd_open_cpio(file, path);
|
||||
struct initrd_file cpio_attempt = initrd_open_cpio(file, path);
|
||||
if (cpio_attempt.data) {
|
||||
printv("bootboot: cpio matched when reading file `%s`\n", path);
|
||||
return cpio_attempt;
|
||||
}
|
||||
panic("bootboot: cannot read file `%s`: no such file or directory", path);
|
||||
}
|
||||
if (file.size < 262) DETECT_FAILED;
|
||||
|
||||
if (file.size < 262) {
|
||||
DETECT_FAILED;
|
||||
}
|
||||
|
||||
if (!memcmp("ustar", file.data + 257, 5)) {
|
||||
file_t ustar_attempt = initrd_open_ustar(file, path);
|
||||
struct initrd_file ustar_attempt = initrd_open_ustar(file, path);
|
||||
if (ustar_attempt.data) {
|
||||
printv("bootboot: ustar matched when reading file `%s`\n", path);
|
||||
return ustar_attempt;
|
||||
}
|
||||
panic("bootboot: cannot read file `%s`: no such file or directory", path);
|
||||
}
|
||||
|
||||
DETECT_FAILED;
|
||||
}
|
||||
|
||||
/// Utilities ///
|
||||
uint32_t oct2bin(uint8_t* str, uint32_t max) {
|
||||
uint32_t value = 0;
|
||||
while(max-- > 0) {
|
||||
value <<= 3;
|
||||
value += *str++ - '0';
|
||||
}
|
||||
return value;
|
||||
}
|
||||
uint32_t hex2bin(uint8_t* str, uint32_t size) {
|
||||
uint32_t value = 0;
|
||||
while(size-- > 0){
|
||||
value <<= 4;
|
||||
if (*str >= '0' && *str <= '9')
|
||||
value += (uint32_t)((*str) - '0');
|
||||
else if (*str >= 'A' && *str <= 'F')
|
||||
value += (uint32_t)((*str) - 'A' + 10);
|
||||
else if (*str >= 'a' && *str <= 'f')
|
||||
value += (uint32_t)((*str) - 'a' + 10);
|
||||
str++;
|
||||
}
|
||||
return value;
|
||||
}
|
||||
@ -1,19 +1,15 @@
|
||||
#ifndef __PROTOS__BOOTBOOT_FS_H__
|
||||
#define __PROTOS__BOOTBOOT_FS_H__
|
||||
#ifndef __PROTOS__BOOTBOOT__INITRD_H__
|
||||
#define __PROTOS__BOOTBOOT__INITRD_H__
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
|
||||
typedef struct file {
|
||||
struct initrd_file {
|
||||
uint64_t size;
|
||||
uint8_t* data;
|
||||
} file_t;
|
||||
uint8_t *data;
|
||||
};
|
||||
|
||||
#define INITRD_HANDLER(name) file_t initrd_open_##name(file_t file, const char* path)
|
||||
#define INITRD_HANDLER(name) struct initrd_file initrd_open_##name(struct initrd_file file, const char *path)
|
||||
|
||||
INITRD_HANDLER(auto);
|
||||
|
||||
uint32_t oct2bin(uint8_t* str, uint32_t max);
|
||||
uint32_t hex2bin(uint8_t* str, uint32_t size);
|
||||
|
||||
#endif
|
||||
|
||||
@ -1,32 +1,41 @@
|
||||
#include <stdint.h>
|
||||
#include <stddef.h>
|
||||
#include <protos/bootboot/initrd.h>
|
||||
#include <lib/libc.h>
|
||||
#include <stdint.h>
|
||||
|
||||
// This looks really sketchy, but that's what the official """spec""" says...
|
||||
typedef struct initrd_header {
|
||||
unsigned char magic; // The magic number is there to check for consistency.
|
||||
struct initrd_entry {
|
||||
uint8_t magic; // The magic number is there to check for consistency.
|
||||
char name[64];
|
||||
unsigned int offset; // Offset in the initrd the file starts.
|
||||
unsigned int length; // Length of the file.
|
||||
} initrd_entry_t;
|
||||
uint32_t offset; // Offset in the initrd the file starts.
|
||||
uint32_t length; // Length of the file.
|
||||
};
|
||||
|
||||
INITRD_HANDLER(jamesm) {
|
||||
if (file.size < 5) return (file_t){};
|
||||
if (file.size < 5) {
|
||||
return (struct initrd_file){0};
|
||||
}
|
||||
|
||||
uint32_t file_count = *((uint32_t*)(file.data));
|
||||
uint32_t path_len = strlen(path);
|
||||
uint32_t file_count = *((uint32_t *)(file.data));
|
||||
size_t path_len = strlen(path);
|
||||
|
||||
initrd_entry_t* data = (initrd_entry_t*)(file.data + 4);
|
||||
if (data[0].magic != 0xBF) return (file_t){};
|
||||
struct initrd_entry *data = (void *)(file.data + 4);
|
||||
if (data->magic != 0xbf) {
|
||||
return (struct initrd_file){0};
|
||||
}
|
||||
|
||||
for(uint32_t i = 0;i < file_count;i++) {
|
||||
if (data[i].magic != 0xBF) return (file_t){};
|
||||
if(!memcmp(data[i].name, path, path_len + 1)){
|
||||
return (file_t){
|
||||
for (uint32_t i = 0; i < file_count; i++) {
|
||||
if (data[i].magic != 0xbf) {
|
||||
return (struct initrd_file){0};
|
||||
}
|
||||
|
||||
if (!memcmp(data[i].name, path, path_len + 1)) {
|
||||
return (struct initrd_file){
|
||||
data[i].length,
|
||||
file.data + data[i].offset
|
||||
};
|
||||
}
|
||||
}
|
||||
return (file_t){};
|
||||
}
|
||||
|
||||
return (struct initrd_file){0};
|
||||
}
|
||||
|
||||
@ -1,27 +1,34 @@
|
||||
#include <stdint.h>
|
||||
#include <stddef.h>
|
||||
#include <protos/bootboot/initrd.h>
|
||||
#include <lib/libc.h>
|
||||
#include <stdint.h>
|
||||
#include <lib/blib.h>
|
||||
|
||||
#define PTR (file.data + offset)
|
||||
|
||||
INITRD_HANDLER(ustar) {
|
||||
#define PTR (file.data + offset)
|
||||
if (file.size < 262) return (file_t){};
|
||||
if (file.size < 262) {
|
||||
return (struct initrd_file){0};
|
||||
}
|
||||
|
||||
if(memcmp(file.data + 257, "ustar", 5))
|
||||
return (file_t){};
|
||||
|
||||
uint32_t path_size = strlen(path);
|
||||
if (memcmp(file.data + 257, "ustar", 5)) {
|
||||
return (struct initrd_file){0};
|
||||
}
|
||||
|
||||
size_t path_size = strlen(path);
|
||||
uint32_t offset = 0;
|
||||
|
||||
while(!memcmp(PTR + 257,"ustar",5)){
|
||||
uint32_t file_size = oct2bin(PTR + 0x7c,11);
|
||||
if(!memcmp(PTR, path, path_size + 1)
|
||||
|| (PTR[0] == '.' && PTR[1] == '/' && !memcmp(PTR + 2, path, path_size + 1))) {
|
||||
return (file_t){
|
||||
while (!memcmp(PTR + 257, "ustar", 5)) {
|
||||
uint32_t file_size = oct2bin(PTR + 0x7c, 11);
|
||||
if (!memcmp(PTR, path, path_size + 1)
|
||||
|| (PTR[0] == '.' && PTR[1] == '/' && !memcmp(PTR + 2, path, path_size + 1))) {
|
||||
return (struct initrd_file){
|
||||
file_size,
|
||||
PTR+512,
|
||||
PTR + 512,
|
||||
};
|
||||
}
|
||||
offset += (((file_size + 511) / 512) + 1) * 512;
|
||||
}
|
||||
return (file_t){};
|
||||
}
|
||||
|
||||
return (struct initrd_file){0};
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user