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multiboot2: Add support for EFI system table tag

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This commit is contained in:
mintsuki 2021-09-14 23:12:34 +02:00
parent 33692555a7
commit 04732c6221
1 changed files with 48 additions and 6 deletions
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54
stage23/protos/multiboot2.c
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@ -58,9 +58,14 @@ static size_t get_multiboot2_info_size(
ALIGN_UP(sizeof(struct multiboot_tag_elf_sections) + section_hdr_size, MULTIBOOT_TAG_ALIGN) + // ELF info
ALIGN_UP(modules_size, MULTIBOOT_TAG_ALIGN) + // modules
ALIGN_UP(sizeof(struct multiboot_tag_mmap) + sizeof(struct multiboot_mmap_entry) * 256, MULTIBOOT_TAG_ALIGN) + // MMAP
#if uefi == 1
ALIGN_UP(sizeof(struct multiboot_tag_efi_mmap) + (efi_desc_size * 256), MULTIBOOT_TAG_ALIGN) + // EFI MMAP
#endif
#if uefi == 1
ALIGN_UP(sizeof(struct multiboot_tag_efi_mmap) + (efi_desc_size * 256), MULTIBOOT_TAG_ALIGN) + // EFI MMAP
#if defined (__i386__)
ALIGN_UP(sizeof(struct multiboot_tag_efi32), MULTIBOOT_TAG_ALIGN) + // EFI system table 32
#elif defined (__x86_64__)
ALIGN_UP(sizeof(struct multiboot_tag_efi64), MULTIBOOT_TAG_ALIGN) + // EFI system table 64
#endif
#endif
ALIGN_UP(sizeof(struct multiboot_tag), MULTIBOOT_TAG_ALIGN); // end
}
@ -108,7 +113,14 @@ void multiboot2_load(char *config, char* cmdline) {
case MULTIBOOT_TAG_TYPE_BOOT_LOADER_NAME:
case MULTIBOOT_TAG_TYPE_MODULE:
case MULTIBOOT_TAG_TYPE_MMAP:
case MULTIBOOT_TAG_TYPE_EFI_MMAP:
#if uefi == 1
case MULTIBOOT_TAG_TYPE_EFI_MMAP:
#if defined (__i386__)
case MULTIBOOT_TAG_TYPE_EFI32:
#elif defined (__x86_64__)
case MULTIBOOT_TAG_TYPE_EFI64:
#endif
#endif
case MULTIBOOT_TAG_TYPE_FRAMEBUFFER:
break;
case MULTIBOOT_TAG_TYPE_ACPI_NEW:
@ -139,7 +151,9 @@ void multiboot2_load(char *config, char* cmdline) {
break;
}
// We always align the modules ;^)
case MULTIBOOT_HEADER_TAG_MODULE_ALIGN: break;
case MULTIBOOT_HEADER_TAG_MODULE_ALIGN:
case MULTIBOOT_HEADER_TAG_EFI_BS:
break;
default: panic("multiboot2: Unknown header tag type");
}
@ -338,6 +352,7 @@ void multiboot2_load(char *config, char* cmdline) {
struct fb_info fbinfo;
if (!fb_init(&fbinfo, req_width, req_height, req_bpp)) {
#if bios == 1
size_t rows, cols;
init_vga_textmode(&rows, &cols, false);
@ -347,6 +362,9 @@ void multiboot2_load(char *config, char* cmdline) {
tag->common.framebuffer_height = rows;
tag->common.framebuffer_bpp = 16;
tag->common.framebuffer_type = MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT;
#elif uefi == 1
panic("multiboot2: Cannot use text mode with UEFI");
#endif
} else {
tag->common.type = MULTIBOOT_TAG_TYPE_FRAMEBUFFER;
tag->common.size = sizeof(struct multiboot_tag_framebuffer);
@ -368,7 +386,7 @@ void multiboot2_load(char *config, char* cmdline) {
append_tag(info_idx, &tag->common);
} else {
#if uefi == 1
panic("multiboot2: cannot use text mode with UEFI");
panic("multiboot2: Cannot use text mode with UEFI");
#elif bios == 1
size_t rows, cols;
init_vga_textmode(&rows, &cols, false);
@ -396,6 +414,30 @@ void multiboot2_load(char *config, char* cmdline) {
}
}
//////////////////////////////////////////////
// Create EFI system table info tag
//////////////////////////////////////////////
#if uefi == 1
{
#if defined (__i386__)
uint32_t size = sizeof(struct multiboot_tag_efi32);
struct multiboot_tag_efi32 *tag = (void *)(mb2_info + info_idx);
tag->type = MULTIBOOT_TAG_TYPE_EFI32;
#elif defined (__x86_64__)
uint32_t size = sizeof(struct multiboot_tag_efi64);
struct multiboot_tag_efi64 *tag = (void *)(mb2_info + info_idx);
tag->type = MULTIBOOT_TAG_TYPE_EFI64;
#endif
tag->size = size;
tag->pointer = (uintptr_t)gST;
append_tag(info_idx, tag);
}
#endif
//////////////////////////////////////////////
// Create ELF info tag
//////////////////////////////////////////////