diff options
Diffstat (limited to 'loader/loader_efi.c')
| -rw-r--r-- | loader/loader_efi.c | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/loader/loader_efi.c b/loader/loader_efi.c deleted file mode 100644 index 23540ef..0000000 --- a/loader/loader_efi.c +++ /dev/null @@ -1,182 +0,0 @@ -#include "loader_efi.h" - -#include <loader/data_efi.h> - -#include <kernel/entry.h> - -static CHAR16 *kernel_path = L"\\adasoft\\sophia\\kernel.os"; -static struct system_image *kernel_image = NULL; - -static struct efi_memory_map_data *get_memory_map_data(void); -static struct efi_framebuffer_data *get_framebuffer_data(void); -static void *get_acpi_data(void); - -noreturn static void enter_kernel() -{ - struct efi_boot_data data; - kernel_entry_func kernel_entry; - kernel_entry = (kernel_entry_func)(kernel_image->ehdr.e_entry); - - struct memory_range kernel_entry_stack = - system_allocate(KERNEL_ENTRY_STACK_SIZE); - - // get a stack here for now idfk - paging_map_range(KERNEL_ENTRY_STACK_BASE, - &kernel_entry_stack, - DATA_PAGE_TYPE); - - data.acpi = get_acpi_data(); - data.framebuffer = get_framebuffer_data(); - data.memory_map = get_memory_map_data(); - - EFI_STATUS status = e_bs->ExitBootServices(e_image_handle, - data.memory_map->key); - - if (EFI_ERROR(status)) - { - Print(L"failed exiting boot services environment: %r\r\n", status); - efi_exit(status); - } - - // enter the kernel address environment - paging_enter(); - - // set the kernel entry stack. - __asm__ - ( - "mov %0, %%rsp" - : - : "r"((uint64_t)KERNEL_ENTRY_STACK_HEAD) - ); - - kernel_entry(&data); - - while(true); -} - -void loader_main(void) -{ - kernel_image = system_image_open(kernel_path); - - Print(L"loading %s\r\n", kernel_path); - - if (system_image_load(kernel_image)) - { - Print(L"loaded kernel image at base %16.0lx size %d bytes\r\n", - kernel_image->buffer.base, - kernel_image->buffer.size); - } - else - { - Print(L"failed loading kernel image\r\n"); - efi_exit(EFI_ABORTED); - } - - paging_init(); - system_image_map(kernel_image); - Print(L"kernel maps created. entering kernel\r\n"); - enter_kernel(); - - efi_exit(EFI_ABORTED); -} - -static struct efi_memory_map_data *get_memory_map_data(void) -{ - EFI_STATUS status; - UINTN mapsize = 0; - struct efi_memory_map_data *map = NULL; - - status = e_bs->GetMemoryMap(&mapsize, NULL, NULL, NULL, NULL); - - if (status == EFI_BUFFER_TOO_SMALL) - { - map = efi_allocate(sizeof(*map) + mapsize); - } - - if (map) - { - status = e_bs->GetMemoryMap(&map->size, - map->data, - &map->key, - &map->descsize, - &map->descver); - } - else - { - status = e_last_error; - } - - if (EFI_ERROR(status)) - { - Print(L"failed getting memory map: %r\r\n", status); - return NULL; - } - - return map; -} - -static struct efi_framebuffer_data *get_framebuffer_data(void) -{ - struct efi_framebuffer_data *framebuffer; - - if (!e_graphics_output) - { - return NULL; - } - - framebuffer = efi_allocate(sizeof(*framebuffer)); - - if (framebuffer) - { - EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE *mode = e_graphics_output->Mode; - - framebuffer->bitmask = mode->Info->PixelInformation; - framebuffer->width = mode->Info->HorizontalResolution; - framebuffer->height = mode->Info->VerticalResolution; - framebuffer->buffer.base = mode->FrameBufferBase; - framebuffer->buffer.size = mode->FrameBufferSize; - framebuffer->buffer.type = RESERVED_MEMORY; - framebuffer->pxformat = mode->Info->PixelFormat; - - switch (framebuffer->pxformat) - { - //falthrough - case PixelBlueGreenRedReserved8BitPerColor: - case PixelRedGreenBlueReserved8BitPerColor: - framebuffer->pxsize = sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL); - break; - default: - // TODO: calculate pixel size for bitmask format - framebuffer->pxsize = 0; - } - - framebuffer->pitch = framebuffer->width * framebuffer->pxsize; - } - else - { - Print(L"failed getting framebuffer data: %r\r\n", e_last_error); - return NULL; - } - - return framebuffer; -} - -static void *get_acpi_data(void) -{ - struct efi_acpi_data *acpi = efi_allocate(sizeof(*acpi)); - - EFI_GUID acpi_20_guid = ACPI_20_TABLE_GUID; - - for (UINTN i = 0; acpi && i < e_st->NumberOfTableEntries; i++) - { - if (!CompareGuid(&acpi_20_guid, &e_st->ConfigurationTable[i].VendorGuid)) - { - acpi->rsdp = e_st->ConfigurationTable[i].VendorTable; - return acpi; - } - } - - Print(L"failed getting acpi rsdp\r\n"); - return NULL; -} - |