61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
#include "debug_log.h"
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#include "efi.h"
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#include "elf_loader.h"
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#include "file.h"
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#include "memory_map.h"
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#include "tianole/boot_info.h"
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static efi_char16_t boot_banner_text[] = u"Tianole x86 bootloader.\r\n";
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static efi_char16_t kernel_path_text[] = u"\\kernel.elf";
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efi_status EFIAPI efi_main(
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efi_handle image_handle, efi_system_table_t *system_table)
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{
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void *kernel_image;
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uint64_t kernel_size;
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kernel_entry_fn_t kernel_entry;
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boot_info_t boot_info = {
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.version = BOOT_INFO_VERSION,
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.boot_flags = BOOT_FLAG_SERVICES_ACTIVE,
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};
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efi_status status;
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system_table->con_out->output_string(
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system_table->con_out, boot_banner_text);
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boot_debug_log_puts("Tianole x86 bootloader loaded.\n");
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status = boot_read_file(image_handle,
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system_table,
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kernel_path_text,
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&kernel_image,
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&kernel_size);
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if (status != EFI_SUCCESS) {
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boot_debug_log_puts("failed: read kernel.elf\n");
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return status;
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}
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status = boot_load_kernel_elf(
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system_table, kernel_image, kernel_size, &kernel_entry);
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if (status != EFI_SUCCESS) {
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boot_debug_log_puts("failed: load kernel image\n");
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return status;
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}
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status = boot_exit_services_with_latest_memory_map(
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image_handle, system_table, &boot_info);
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if (status != EFI_SUCCESS) {
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boot_debug_log_puts("failed: exit boot services\n");
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return status;
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}
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boot_debug_log_puts("jumping to kernel entry\n");
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kernel_entry(&boot_info);
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boot_debug_log_puts("kernel returned unexpectedly\n");
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for (;;) {
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__asm__ volatile("hlt");
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}
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return EFI_SUCCESS;
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}
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