Renamed files to match presentation

1 files changed, 0 insertions, 147 deletions

diff --git a/src/loader/impl/mb1.c b/src/loader/impl/mb1.c
deleted file mode 100644
index c02aa50..0000000
--- a/src/loader/impl/mb1.c
+++ /dev/null
@@ -1,147 +0,0 @@
-// MIT License, Copyright (c) 2021 Marvin Borner
-// Everything according to spec
-
-#include <elf.h>
-#include <impl/mb1.h>
-#include <lib.h>
-#include <mem.h>
-#include <pnc.h>
-
-// The address where data gets stored
-#define MB1_LOAD_ADDRESS 0x10000
-
-#define MB1_FLAG_PAGE_ALIGN (1 << 0) // Align modules with page boundaries (4K)
-#define MB1_FLAG_MEMORY_INFO (1 << 1) // Load/store all mem_* fields and mmap_* structs
-#define MB1_FLAG_VIDEO_MODE (1 << 2) // Load/store video mode table
-#define MB1_FLAG_MANUAL_ADDRESSES (1 << 16) // Use specified load addresses
-
-struct mb1_entry {
-	u32 magic;
-	u32 flags;
-	u32 checksum; // Everything after that is optional
-	u32 header_addr; // Unsupported
-	u32 load_addr; // Unsupported
-	u32 load_end_addr; // Unsupported
-	u32 bss_end_addr; // Unsupported
-	u32 entry_addr; // Unsupported
-	u32 mode_type;
-	u32 width;
-	u32 height;
-	u32 depth;
-};
-
-// The (really simple) multiboot checksum algorithm
-static u32 mb1_checksum(struct mb1_entry *entry)
-{
-	return -(entry->magic + entry->flags);
-}
-
-// Load data into memory and return address (not overlapping
-static u32 mb1_store(void *data, u32 size)
-{
-	static u32 offset = 0;
-	memcpy((void *)(MB1_LOAD_ADDRESS + offset), data, size);
-	offset += size;
-	return MB1_LOAD_ADDRESS + (offset - size);
-}
-
-static void mb1_store_memory_info(struct mb1_info *info)
-{
-	// TODO: Store mem_lower and mem_upper
-	struct mem_map *mem_map = mem_map_get();
-	info->flags |= MB1_INFO_MEM_MAP;
-	info->mmap_length = mem_map->count * sizeof(struct mb1_mmap_entry);
-	info->mmap_addr = mb1_store(NULL, 0);
-	for (u32 i = 0; i < mem_map->count; i++) {
-		struct mb1_mmap_entry mmap_entry;
-		mmap_entry.struct_size = sizeof(mmap_entry) - 4;
-		mmap_entry.addr_low = mem_map->entry[i].base;
-		mmap_entry.len_low = mem_map->entry[i].length;
-		mmap_entry.type = mem_map->entry[i].type;
-		mb1_store(&mmap_entry, sizeof(mmap_entry));
-	}
-}
-
-// Load the mb1 structs into memory
-static void mb1_load(struct mb1_entry *entry)
-{
-	struct mb1_info info_struct = { 0 };
-	struct mb1_info *info = (void *)mb1_store(&info_struct, sizeof(info_struct));
-
-	// Set boot device
-	info->flags |= MB1_INFO_BOOTDEV;
-	info->boot_device = boot_disk;
-
-	// Set bootloader name
-	info->flags |= MB1_INFO_BOOT_LOADER_NAME;
-	char loader_name[] = "SegelBoot";
-	info->boot_loader_name = mb1_store(loader_name, sizeof(loader_name));
-
-	// Store memory info
-	if (entry->flags & MB1_FLAG_MEMORY_INFO)
-		mb1_store_memory_info(info);
-}
-
-// Jump to kernel with correct info pointer in eax
-static void mb1_jump(u32 entry, u32 info)
-{
-	log("Jumping. So long and thanks for all the fish!\n");
-
-	// Move and jump!
-	__asm__ volatile("movl $" STRINGIFY(MB1_LOAD_MAGIC) ", %%eax\n\t"
-							    "jmpl *%%edi\n\t"
-			 :
-			 : "D"(entry), "b"(info)
-			 : "memory");
-
-	panic("Jumper returned\n");
-}
-
-// Detect and verify mb1
-u8 mb1_detect(struct cfg_entry *cfg)
-{
-	u8 header[8192] = { 0 };
-
-	s32 ret = cfg->dev->p.disk.fs.read(cfg->path, header, 0, sizeof(header), cfg->dev);
-	if (ret < 12)
-		return 0;
-
-	// Find start of multiboot entry by searching for magic
-	struct mb1_entry *entry = 0;
-	for (u32 i = 0; i < sizeof(header); i++) {
-		u32 *p = (u32 *)&header[i];
-		if (*p == MB1_MAGIC) {
-			entry = (void *)p;
-			break;
-		}
-	}
-
-	if (!entry)
-		return 0;
-
-	u32 checksum = mb1_checksum(entry);
-	if (checksum != entry->checksum)
-		return 0;
-
-	cfg->impl.type = IMPL_MB1;
-	cfg->impl.offset = (u32)entry - (u32)header;
-
-	return 1;
-}
-
-// Execute mb1 type kernel
-void mb1_exec(struct cfg_entry *cfg)
-{
-	struct mb1_entry mb1_entry = { 0 };
-	s32 ret = cfg->dev->p.disk.fs.read(cfg->path, &mb1_entry, cfg->impl.offset,
-					   sizeof(mb1_entry), cfg->dev);
-	assert(ret == sizeof(mb1_entry));
-	mb1_load(&mb1_entry);
-
-	u32 entry = elf_load(cfg->dev, cfg->path);
-
-	// This is a kind of hacky parameter stack pushing thing, just disable warning :)
-#pragma GCC diagnostic ignored "-Wpedantic"
-	jmp_kernel((void *)mb1_jump, 2, entry, MB1_LOAD_ADDRESS);
-#pragma GCC diagnostic pop
-}