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Diffstat (limited to 'src/arch/amd64/mboot.c')
-rw-r--r--src/arch/amd64/mboot.c284
1 files changed, 0 insertions, 284 deletions
diff --git a/src/arch/amd64/mboot.c b/src/arch/amd64/mboot.c
deleted file mode 100644
index 9fd7fc2..0000000
--- a/src/arch/amd64/mboot.c
+++ /dev/null
@@ -1,284 +0,0 @@
-#include <shim.h>
-#include <lib.h>
-#include <stdint.h>
-#include <panic.h>
-
-#include "mboot.h"
-
-#define MBOOT_HEADER_MAGIC 0x36D76289
-
-#define MBOOT_CMDLINE 1
-#define MBOOT_MEMORY_MAP 6
-#define MBOOT_FRAMEBUFFER 8
-#define MBOOT_ELF_SYMBOLS 9
-#define MBOOT_OLD_RSDP 14
-#define MBOOT_NEW_RSDP 15
-
-struct mboot_info {
- uint32_t total_size;
- uint32_t reserved;
- char tags[];
-};
-
-struct mboot_tag {
- uint32_t type;
- uint32_t size;
- char data[];
-};
-
-struct mboot_tag_elf_sections {
- uint32_t type;
- uint32_t size;
- uint16_t num;
- uint16_t entsize;
- uint16_t shndx;
- uint16_t reserved;
- char sections[];
-};
-
-struct mboot_tag_elf_sections_entry {
- uint32_t sh_name;
- uint32_t sh_type;
- uint64_t sh_flags;
- uint64_t sh_addr;
- uint64_t sh_offset;
- uint64_t sh_size;
- uint32_t sh_link;
- uint32_t sh_info;
- uint64_t sh_addralign;
- uint64_t sh_entsize;
-};
-
-struct mboot_mmap_entry {
- uint64_t addr;
- uint64_t len;
- uint32_t type;
- uint32_t zero;
-};
-
-struct mboot_tag_mmap {
- uint32_t type;
- uint32_t size;
- uint32_t entry_size;
- uint32_t entry_version;
- struct mboot_mmap_entry entries[];
-};
-
-
-struct mboot_tag_old_rsdp {
- uint32_t type;
- uint32_t size;
- char rsdp[];
-};
-
-struct mboot_tag_new_rsdp {
- uint32_t type;
- uint32_t size;
- char rsdp[];
-};
-
-struct mboot_tag_cmdline {
- uint32_t type;
- uint32_t size;
- uint8_t cmdline[];
-};
-
-struct mboot_tag_framebuffer {
- uint32_t type;
- uint32_t size;
- uint64_t framebuffer_addr;
- uint32_t framebuffer_pitch;
- uint32_t framebuffer_width;
- uint32_t framebuffer_height;
- uint8_t framebuffer_bpp;
- uint8_t framebuffer_type;
- uint16_t reserved;
-};
-
-static void read_symbols(
- volatile struct boot_info *shim_info,
- volatile struct mboot_tag_elf_sections *sections
-) {
- shim_info->symbol_table = (void * volatile) sections->sections;
-
-// struct mboot_elf_section_header *section =
-// (struct mboot_elf_section_header *) (layout->elf_section_headers);
-//
-// for (uint32_t i = 0; i < layout->num; i++) {
-// char buf[20];
-//
-// ultoa(i, buf, 10);
-// serial_out_str("[");
-// serial_out_str(buf);
-// serial_out_str("]\t");
-//
-// serial_out_str((char *)(kaddr(symtab) + section->sh_name));
-// serial_out('\t');
-//
-// ultoa(section->sh_type, buf, 16);
-// serial_out_str("type: 0x");
-// serial_out_str(buf);
-// serial_out('\t');
-//
-// ultoa(section->sh_addr, buf, 16);
-// serial_out_str("addr: 0x");
-// serial_out_str(buf);
-// serial_out('\t');
-//
-// ultoa(section->sh_offset, buf, 16);
-// serial_out_str("offset: 0x");
-// serial_out_str(buf);
-// serial_out('\n');
-//
-// section++;
-// }
-}
-
-static void read_cmdline(
- volatile struct boot_info *shim_info,
- volatile struct mboot_tag_cmdline *cmdline
-) {
- uint32_t size = cmdline->size - 8;
- if (size >= CMDLINE_MAX)
- size = CMDLINE_MAX; // truncate :(
- memcpyv(shim_info->cmdline, cmdline->cmdline, size);
- shim_info->cmdline[size] = '\0';
-}
-
-static void read_framebuffer(
- volatile struct boot_info *shim_info,
- volatile struct mboot_tag_framebuffer *framebuffer
-) {
- shim_info->fb.addr = framebuffer->framebuffer_addr;
- shim_info->fb.width = framebuffer->framebuffer_width;
- shim_info->fb.height = framebuffer->framebuffer_height;
- shim_info->fb.pitch = framebuffer->framebuffer_pitch;
- shim_info->fb.bit_depth = framebuffer->framebuffer_bpp;
-}
-
-static const char *segment_type[] = {
- "Reserved",
- "Free",
- "Reserved",
- "ACPI Reserved",
- "Hibernation",
- "Defective",
- "Unknown"
-};
-
-static void read_memory_map(
- volatile struct boot_info *shim_info,
- volatile struct mboot_tag_mmap *map
-) {
- int idx = 0;
- uintptr_t i = (uintptr_t)map->entries;
- kprintf("MEMORY MAP\n");
- char buf[20];
- for (;
- i < (uintptr_t)map->entries + map->size;
- i += map->entry_size, idx++
- ) {
- struct mboot_mmap_entry *seg = (struct mboot_mmap_entry *) i;
- const char *type = NULL;
- if (seg->type > 4)
- type = segment_type[6];
- else
- type = segment_type[seg->type];
- kprintf("ADDR: %16p LEN: %4s TYPE: %s (%d)\n",
- (void *)seg->addr,
- btoa(seg->len, buf),
- type,
- seg->type
- );
- if (seg->type != 1 || seg->len < 1)
- continue;
- shim_info->map.entries[idx].addr = seg->addr;
- shim_info->map.entries[idx].len = seg->len;
- }
- shim_info->map.entry_count = idx;
-}
-
-static void read_old_rsdp(
- volatile struct boot_info *shim_info,
- volatile struct mboot_tag_old_rsdp *rsdp
-) {
- if (shim_info->acpi_table != NULL)
- return; // xsdp is newer and has been loaded
- shim_info->acpi_table = (void *volatile) rsdp->rsdp;
-}
-
-static void read_new_rsdp(
- volatile struct boot_info *shim_info,
- volatile struct mboot_tag_new_rsdp *rsdp
-) {
- shim_info->acpi_table = (void *volatile) rsdp->rsdp;
-}
-
-void mboot_load_info(
- long mboot_magic,
- volatile const void *mboot_data_ptr,
- volatile struct boot_info *shim_info
-) {
-
- if (mboot_magic != MBOOT_HEADER_MAGIC)
- panic("invalid multiboot magic");
-
- memsetv(shim_info, 0, sizeof(struct boot_info));
-
- struct mboot_info *mboot_info = (struct mboot_info *) mboot_data_ptr;
- const char *mboot_end = ((char *) mboot_info) + mboot_info->total_size;
-
- char *tag_ptr = mboot_info->tags;
-
- while (tag_ptr < mboot_end) {
- struct mboot_tag *tag = (struct mboot_tag *) tag_ptr;
-
- switch (tag->type) {
- case MBOOT_CMDLINE:
- read_cmdline(
- shim_info,
- (struct mboot_tag_cmdline *) tag
- );
- break;
- case MBOOT_FRAMEBUFFER:
- read_framebuffer(
- shim_info,
- (struct mboot_tag_framebuffer *) tag
- );
- break;
- case MBOOT_MEMORY_MAP:
- read_memory_map(
- shim_info,
- (struct mboot_tag_mmap *) tag
- );
- break;
- case MBOOT_ELF_SYMBOLS:
- read_symbols(
- shim_info,
- (struct mboot_tag_elf_sections *) tag
- );
- break;
- case MBOOT_OLD_RSDP:
- read_old_rsdp(
- shim_info,
- (struct mboot_tag_old_rsdp *) tag
- );
- break;
- case MBOOT_NEW_RSDP:
- read_new_rsdp(
- shim_info,
- (struct mboot_tag_new_rsdp *) tag
- );
- break;
- default:
- break;
- }
-
- int size = tag->size;
- if (size % 8 != 0) {
- size += 8 - (size % 8);
- }
-
- tag_ptr += size;
- }
-}
generated by cgit v1.2.3-freya (git 2.51.0) at 2025-09-22 19:31:06 +0000