95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
#include <stdint.h>
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#include <multiboot.h>
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#include <mem.h>
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#include <debug.h>
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struct mboot_data_st mboot_data;
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void parse_multiboot1()
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{
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mboot1_info *data = mboot_data.data;
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if(data->flags & (1<<2))
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{
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debug_ok("MBOOT1 - commandline\n");
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mboot_data.commandline = P2V(data->cmdline);
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}
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if(data->flags & (1<<9))
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{
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debug_ok("MBOOT1 - bootloader\n");
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mboot_data.bootloader = P2V(data->bootloader_name);
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}
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}
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char *mboot_tags_type[] = {
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"", // 0
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"Boot command line", // 1
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"Boot loader name", // 2
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"Module", // 3
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"Basic memory information", // 4
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"BIOS Boot device", // 5
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"Memory map", // 6
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"VBE info", // 7
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"Framebuffer info", // 8
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"ELF-Symbols", //9
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"APM table", // 10
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"EFI 32-bit system table pointer", // 11
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"EFI 64-bit system table pointer", // 12
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"SMBIOS tables", // 13
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"ACPI old RSDP", // 14
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"ACPI new RSDP", // 15
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"Networking information", // 16
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"EFI memory map", // 17
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"EFI boot services not terminated",
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};
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void parse_multiboot2()
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{
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mboot2_tags_head *data = mboot_data.data;
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mboot2_tag_basic *tag = (void *)(data + 1);
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while(tag->type != 0)
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{
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switch(tag->type)
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{
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case MBOOT2_CMDLINE:
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mboot_data.commandline = tag->data;
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debug_ok("MBOOT2 - handle ");
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break;
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case MBOOT2_BOOTLOADER:
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mboot_data.bootloader = tag->data;
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debug_ok("MBOOT2 - handle ");
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break;
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default:
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debug_warning("MBOOT2 - ignore ");
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break;
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}
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if(tag->type <= 18)
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debug("%s (%d bytes)\n", mboot_tags_type[tag->type], tag->size);
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else
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debug("Unknown tag: %d (%d bytes)\n", tag->type, tag->size);
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tag = next_tag(tag);
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}
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}
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void multiboot_init(uint64_t magic, void *data)
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{
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mboot_data.data = data;
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debug_info("MBOOT - Magic:%x\n", magic);
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if(magic == MBOOT1_MAGIC2)
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{
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debug_info("MBOOT - Multiboot version 1\n");
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mboot_data.version = 1;
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parse_multiboot1();
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} else if (magic == MBOOT2_MAGIC2) {
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debug_info("MBOOT - Multiboot version 2\n");
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mboot_data.version = 2;
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parse_multiboot2();
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} else {
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debug_error("PANIC - NOT A MULTIBOOT COMPLIANT BOOTLOADER\n");
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for(;;);
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}
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if(mboot_data.commandline)
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debug_info("MBOOT - Command line: %s\n", mboot_data.commandline);
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if(mboot_data.bootloader)
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debug_info("MBOOT - Bootloader: %s\n", mboot_data.bootloader);
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}
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