+// SPDX-License-Identifier: GPL-2.0+
/*
* EFI hello world
*
* Copyright (c) 2016 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*
- * SPDX-License-Identifier: GPL-2.0+
- *
* This program demonstrates calling a boottime service.
* It writes a greeting and the load options to the console.
*/
static const efi_guid_t loaded_image_guid = LOADED_IMAGE_GUID;
static const efi_guid_t fdt_guid = EFI_FDT_GUID;
+static const efi_guid_t acpi_guid = EFI_ACPI_TABLE_GUID;
static const efi_guid_t smbios_guid = SMBIOS_TABLE_GUID;
-static int hw_memcmp(const void *buf1, const void *buf2, size_t length)
-{
- const u8 *pos1 = buf1;
- const u8 *pos2 = buf2;
-
- for (; length; --length) {
- if (*pos1 != *pos2)
- return *pos1 - *pos2;
- ++pos1;
- ++pos2;
- }
- return 0;
-}
-
-/*
- * Entry point of the EFI application.
+/**
+ * efi_main() - entry point of the EFI application.
*
- * @handle handle of the loaded image
- * @systable system table
- * @return status code
+ * @handle: handle of the loaded image
+ * @systable: system table
+ * @return: status code
*/
efi_status_t EFIAPI efi_main(efi_handle_t handle,
struct efi_system_table *systable)
efi_uintn_t i;
u16 rev[] = L"0.0.0";
- con_out->output_string(con_out, L"Hello, world!\n");
+ /* UEFI requires CR LF */
+ con_out->output_string(con_out, L"Hello, world!\r\n");
/* Print the revision number */
rev[0] = (systable->hdr.revision >> 16) + '0';
con_out->output_string(con_out, L"Running on UEFI ");
con_out->output_string(con_out, rev);
- con_out->output_string(con_out, L"\n");
+ con_out->output_string(con_out, L"\r\n");
/* Get the loaded image protocol */
ret = boottime->handle_protocol(handle, &loaded_image_guid,
(void **)&loaded_image);
if (ret != EFI_SUCCESS) {
- con_out->output_string(con_out,
- L"Cannot open loaded image protocol\n");
+ con_out->output_string
+ (con_out, L"Cannot open loaded image protocol\r\n");
goto out;
}
/* Find configuration tables */
for (i = 0; i < systable->nr_tables; ++i) {
- if (!hw_memcmp(&systable->tables[i].guid, &fdt_guid,
- sizeof(efi_guid_t)))
- con_out->output_string(con_out, L"Have device tree\n");
- if (!hw_memcmp(&systable->tables[i].guid, &smbios_guid,
- sizeof(efi_guid_t)))
- con_out->output_string(con_out, L"Have SMBIOS table\n");
+ if (!memcmp(&systable->tables[i].guid, &fdt_guid,
+ sizeof(efi_guid_t)))
+ con_out->output_string
+ (con_out, L"Have device tree\r\n");
+ if (!memcmp(&systable->tables[i].guid, &acpi_guid,
+ sizeof(efi_guid_t)))
+ con_out->output_string
+ (con_out, L"Have ACPI 2.0 table\r\n");
+ if (!memcmp(&systable->tables[i].guid, &smbios_guid,
+ sizeof(efi_guid_t)))
+ con_out->output_string
+ (con_out, L"Have SMBIOS table\r\n");
}
/* Output the load options */
con_out->output_string(con_out, L"Load options: ");
(u16 *)loaded_image->load_options);
else
con_out->output_string(con_out, L"<none>");
- con_out->output_string(con_out, L"\n");
+ con_out->output_string(con_out, L"\r\n");
out:
boottime->exit(handle, ret, 0, NULL);