summaryrefslogtreecommitdiff
path: root/lib/efi/efi_app_init.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/efi/efi_app_init.c')
-rw-r--r--lib/efi/efi_app_init.c205
1 files changed, 0 insertions, 205 deletions
diff --git a/lib/efi/efi_app_init.c b/lib/efi/efi_app_init.c
deleted file mode 100644
index c5e4192fe06..00000000000
--- a/lib/efi/efi_app_init.c
+++ /dev/null
@@ -1,205 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * EFI-app board implementation
- *
- * Copyright 2023 Google LLC
- * Written by Simon Glass <sjg@chromium.org>
- */
-
-#include <dm.h>
-#include <efi.h>
-#include <efi_api.h>
-#include <errno.h>
-#include <malloc.h>
-#include <asm/global_data.h>
-#include <dm/device-internal.h>
-#include <dm/root.h>
-#include <linux/types.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-/**
- * efi_bind_block() - bind a new block device to an EFI device
- *
- * Binds a new top-level EFI_MEDIA device as well as a child block device so
- * that the block device can be accessed in U-Boot.
- *
- * The device can then be accessed using 'part list efi 0', 'fat ls efi 0:1',
- * for example, just like any other interface type.
- *
- * @handle: handle of the controller on which this driver is installed
- * @blkio: block io protocol proxied by this driver
- * @device_path: EFI device path structure for this
- * @len: Length of @device_path in bytes
- * @devp: Returns the bound device
- * Return: 0 if OK, -ve on error
- */
-int efi_bind_block(efi_handle_t handle, struct efi_block_io *blkio,
- struct efi_device_path *device_path, int len,
- struct udevice **devp)
-{
- struct efi_media_plat plat;
- struct udevice *dev;
- char name[18];
- int ret;
-
- plat.handle = handle;
- plat.blkio = blkio;
- plat.device_path = malloc(device_path->length);
- if (!plat.device_path)
- return log_msg_ret("path", -ENOMEM);
- memcpy(plat.device_path, device_path, device_path->length);
- ret = device_bind(dm_root(), DM_DRIVER_GET(efi_media), "efi_media",
- &plat, ofnode_null(), &dev);
- if (ret)
- return log_msg_ret("bind", ret);
-
- snprintf(name, sizeof(name), "efi_media_%x", dev_seq(dev));
- device_set_name(dev, name);
- *devp = dev;
-
- return 0;
-}
-
-/**
- * devpath_is_partition() - Figure out if a device path is a partition
- *
- * Checks if a device path refers to a partition on some media device. This
- * works by checking for a valid partition number in a hard-driver media device
- * as the final component of the device path.
- *
- * @path: device path
- * Return: true if a partition, false if not
- * (e.g. it might be media which contains partitions)
- */
-static bool devpath_is_partition(const struct efi_device_path *path)
-{
- const struct efi_device_path *p;
- bool was_part = false;
-
- for (p = path; p->type != DEVICE_PATH_TYPE_END;
- p = (void *)p + p->length) {
- was_part = false;
- if (p->type == DEVICE_PATH_TYPE_MEDIA_DEVICE &&
- p->sub_type == DEVICE_PATH_SUB_TYPE_HARD_DRIVE_PATH) {
- struct efi_device_path_hard_drive_path *hd =
- (void *)path;
-
- if (hd->partition_number)
- was_part = true;
- }
- }
-
- return was_part;
-}
-
-/**
- * setup_block() - Find all block devices and setup EFI devices for them
- *
- * Partitions are ignored, since U-Boot has partition handling. Errors with
- * particular devices produce a warning but execution continues to try to
- * find others.
- *
- * Return: 0 if found, -ENOSYS if there is no boot-services table, -ENOTSUPP
- * if a required protocol is not supported
- */
-static int setup_block(void)
-{
- efi_guid_t efi_blkio_guid = EFI_BLOCK_IO_PROTOCOL_GUID;
- efi_guid_t efi_devpath_guid = EFI_DEVICE_PATH_PROTOCOL_GUID;
- efi_guid_t efi_pathutil_guid = EFI_DEVICE_PATH_UTILITIES_PROTOCOL_GUID;
- efi_guid_t efi_pathtext_guid = EFI_DEVICE_PATH_TO_TEXT_PROTOCOL_GUID;
- struct efi_boot_services *boot = efi_get_boot();
- struct efi_device_path_utilities_protocol *util;
- struct efi_device_path_to_text_protocol *text;
- struct efi_device_path *path;
- struct efi_block_io *blkio;
- efi_uintn_t num_handles;
- efi_handle_t *handle;
- int ret, i;
-
- if (!boot)
- return log_msg_ret("sys", -ENOSYS);
-
- /* Find all devices which support the block I/O protocol */
- ret = boot->locate_handle_buffer(BY_PROTOCOL, &efi_blkio_guid, NULL,
- &num_handles, &handle);
- if (ret)
- return log_msg_ret("loc", -ENOTSUPP);
- log_debug("Found %d handles:\n", (int)num_handles);
-
- /* We need to look up the path size and convert it to text */
- ret = boot->locate_protocol(&efi_pathutil_guid, NULL, (void **)&util);
- if (ret)
- return log_msg_ret("util", -ENOTSUPP);
- ret = boot->locate_protocol(&efi_pathtext_guid, NULL, (void **)&text);
- if (ret)
- return log_msg_ret("text", -ENOTSUPP);
-
- for (i = 0; i < num_handles; i++) {
- struct udevice *dev;
- const u16 *name;
- bool is_part;
- int len;
-
- ret = boot->handle_protocol(handle[i], &efi_devpath_guid,
- (void **)&path);
- if (ret) {
- log_warning("- devpath %d failed (ret=%d)\n", i, ret);
- continue;
- }
-
- ret = boot->handle_protocol(handle[i], &efi_blkio_guid,
- (void **)&blkio);
- if (ret) {
- log_warning("- blkio %d failed (ret=%d)\n", i, ret);
- continue;
- }
-
- name = text->convert_device_path_to_text(path, true, false);
- is_part = devpath_is_partition(path);
-
- if (!is_part) {
- len = util->get_device_path_size(path);
- ret = efi_bind_block(handle[i], blkio, path, len, &dev);
- if (ret) {
- log_warning("- blkio bind %d failed (ret=%d)\n",
- i, ret);
- continue;
- }
- } else {
- dev = NULL;
- }
-
- /*
- * Show the device name if we created one. Otherwise indicate
- * that it is a partition.
- */
- printf("%2d: %-12s %ls\n", i, dev ? dev->name : "<partition>",
- name);
- }
- boot->free_pool(handle);
-
- return 0;
-}
-
-/**
- * board_early_init_r() - Scan for UEFI devices that should be available
- *
- * This sets up block devices within U-Boot for those found in UEFI. With this,
- * U-Boot can access those devices
- *
- * Returns: 0 on success, -ve on error
- */
-int board_early_init_r(void)
-{
- if (gd->flags & GD_FLG_RELOC) {
- int ret;
-
- ret = setup_block();
- if (ret)
- return ret;
- }
-
- return 0;
-}