* [PATCH v4 0/1] efi: Minor improvements for the EFI app
@ 2023-12-19 14:27 Simon Glass
2023-12-19 14:27 ` [PATCH v4 1/1] efi: Avoid using dm_scan_other() Simon Glass
0 siblings, 1 reply; 3+ messages in thread
From: Simon Glass @ 2023-12-19 14:27 UTC (permalink / raw
To: U-Boot Mailing List
Cc: Ilias Apalodimas, Tom Rini, Simon Glass, Heinrich Schuchardt
This series collects a few fixes and improvements useful when booting
U-Boot as an EFI app.
Changes in v4:
- Create a new file inside lib/efi instead of board/
Changes in v2:
- Drop duplicate acpi_xsdt patch
- Put the board_early_init_r code into board/
Simon Glass (1):
efi: Avoid using dm_scan_other()
configs/efi-x86_app64_defconfig | 1 +
lib/efi/Makefile | 2 +-
lib/efi/efi_app.c | 187 -----------------------------
lib/efi/efi_app_init.c | 205 ++++++++++++++++++++++++++++++++
4 files changed, 207 insertions(+), 188 deletions(-)
create mode 100644 lib/efi/efi_app_init.c
--
2.43.0.472.g3155946c3a-goog
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH v4 1/1] efi: Avoid using dm_scan_other()
2023-12-19 14:27 [PATCH v4 0/1] efi: Minor improvements for the EFI app Simon Glass
@ 2023-12-19 14:27 ` Simon Glass
2023-12-25 10:49 ` Heinrich Schuchardt
0 siblings, 1 reply; 3+ messages in thread
From: Simon Glass @ 2023-12-19 14:27 UTC (permalink / raw
To: U-Boot Mailing List
Cc: Ilias Apalodimas, Tom Rini, Simon Glass, Heinrich Schuchardt
This function is defined by bootstd so using it precludes using that
feature. Use the board_early_init_r() feature instead.
Nove the affected code into a new file, so that it is clear that
this relates to board init.
Signed-off-by: Simon Glass <sjg@chromium.org>
---
Changes in v4:
- Create a new file inside lib/efi instead of board/
Changes in v2:
- Drop duplicate acpi_xsdt patch
- Put the board_early_init_r code into board/
configs/efi-x86_app64_defconfig | 1 +
lib/efi/Makefile | 2 +-
lib/efi/efi_app.c | 187 -----------------------------
lib/efi/efi_app_init.c | 205 ++++++++++++++++++++++++++++++++
4 files changed, 207 insertions(+), 188 deletions(-)
create mode 100644 lib/efi/efi_app_init.c
diff --git a/configs/efi-x86_app64_defconfig b/configs/efi-x86_app64_defconfig
index 14b5cd0fa0ee..ed0506fe25cb 100644
--- a/configs/efi-x86_app64_defconfig
+++ b/configs/efi-x86_app64_defconfig
@@ -17,6 +17,7 @@ CONFIG_USE_BOOTCOMMAND=y
CONFIG_BOOTCOMMAND="ext2load scsi 0:3 01000000 /boot/vmlinuz; zboot 01000000"
CONFIG_SYS_CONSOLE_INFO_QUIET=y
CONFIG_DISPLAY_BOARDINFO_LATE=y
+CONFIG_BOARD_EARLY_INIT_R=y
CONFIG_HUSH_PARSER=y
CONFIG_SYS_PBSIZE=532
CONFIG_CMD_BOOTZ=y
diff --git a/lib/efi/Makefile b/lib/efi/Makefile
index a790d2d554cd..232fa684360e 100644
--- a/lib/efi/Makefile
+++ b/lib/efi/Makefile
@@ -2,7 +2,7 @@
#
# (C) Copyright 2015 Google, Inc
-obj-$(CONFIG_EFI_APP) += efi_app.o efi.o
+obj-$(CONFIG_EFI_APP) += efi_app.o efi.o efi_app_init.o
obj-$(CONFIG_EFI_STUB) += efi_info.o
CFLAGS_REMOVE_efi_stub.o := -mregparm=3 \
diff --git a/lib/efi/efi_app.c b/lib/efi/efi_app.c
index c5eb816655ea..e79fa5dad176 100644
--- a/lib/efi/efi_app.c
+++ b/lib/efi/efi_app.c
@@ -68,49 +68,6 @@ int efi_get_mmap(struct efi_mem_desc **descp, int *sizep, uint *keyp,
return 0;
}
-/**
- * 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;
-}
-
static efi_status_t setup_memory(struct efi_priv *priv)
{
struct efi_boot_services *boot = priv->boot;
@@ -179,150 +136,6 @@ static void free_memory(struct efi_priv *priv)
global_data_ptr = NULL;
}
-/**
- * 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;
-}
-
-/**
- * dm_scan_other() - Scan for UEFI devices that should be available to U-Boot
- *
- * This sets up block devices within U-Boot for those found in UEFI. With this,
- * U-Boot can access those devices
- *
- * @pre_reloc_only: true to only bind pre-relocation devices (ignored)
- * Returns: 0 on success, -ve on error
- */
-int dm_scan_other(bool pre_reloc_only)
-{
- if (gd->flags & GD_FLG_RELOC) {
- int ret;
-
- ret = setup_block();
- if (ret)
- return ret;
- }
-
- return 0;
-}
-
static void scan_tables(struct efi_system_table *sys_table)
{
efi_guid_t acpi = EFI_ACPI_TABLE_GUID;
diff --git a/lib/efi/efi_app_init.c b/lib/efi/efi_app_init.c
new file mode 100644
index 000000000000..c5e4192fe06c
--- /dev/null
+++ b/lib/efi/efi_app_init.c
@@ -0,0 +1,205 @@
+// 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;
+}
--
2.43.0.472.g3155946c3a-goog
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH v4 1/1] efi: Avoid using dm_scan_other()
2023-12-19 14:27 ` [PATCH v4 1/1] efi: Avoid using dm_scan_other() Simon Glass
@ 2023-12-25 10:49 ` Heinrich Schuchardt
0 siblings, 0 replies; 3+ messages in thread
From: Heinrich Schuchardt @ 2023-12-25 10:49 UTC (permalink / raw
To: Simon Glass; +Cc: Ilias Apalodimas, Tom Rini, U-Boot Mailing List
On 12/19/23 15:27, Simon Glass wrote:
> This function is defined by bootstd so using it precludes using that
> feature. Use the board_early_init_r() feature instead.
>
> Nove the affected code into a new file, so that it is clear that
> this relates to board init.
>
> Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
> ---
>
> Changes in v4:
> - Create a new file inside lib/efi instead of board/
>
> Changes in v2:
> - Drop duplicate acpi_xsdt patch
> - Put the board_early_init_r code into board/
>
> configs/efi-x86_app64_defconfig | 1 +
> lib/efi/Makefile | 2 +-
> lib/efi/efi_app.c | 187 -----------------------------
> lib/efi/efi_app_init.c | 205 ++++++++++++++++++++++++++++++++
> 4 files changed, 207 insertions(+), 188 deletions(-)
> create mode 100644 lib/efi/efi_app_init.c
>
> diff --git a/configs/efi-x86_app64_defconfig b/configs/efi-x86_app64_defconfig
> index 14b5cd0fa0ee..ed0506fe25cb 100644
> --- a/configs/efi-x86_app64_defconfig
> +++ b/configs/efi-x86_app64_defconfig
> @@ -17,6 +17,7 @@ CONFIG_USE_BOOTCOMMAND=y
> CONFIG_BOOTCOMMAND="ext2load scsi 0:3 01000000 /boot/vmlinuz; zboot 01000000"
> CONFIG_SYS_CONSOLE_INFO_QUIET=y
> CONFIG_DISPLAY_BOARDINFO_LATE=y
> +CONFIG_BOARD_EARLY_INIT_R=y
> CONFIG_HUSH_PARSER=y
> CONFIG_SYS_PBSIZE=532
> CONFIG_CMD_BOOTZ=y
> diff --git a/lib/efi/Makefile b/lib/efi/Makefile
> index a790d2d554cd..232fa684360e 100644
> --- a/lib/efi/Makefile
> +++ b/lib/efi/Makefile
> @@ -2,7 +2,7 @@
> #
> # (C) Copyright 2015 Google, Inc
>
> -obj-$(CONFIG_EFI_APP) += efi_app.o efi.o
> +obj-$(CONFIG_EFI_APP) += efi_app.o efi.o efi_app_init.o
> obj-$(CONFIG_EFI_STUB) += efi_info.o
>
> CFLAGS_REMOVE_efi_stub.o := -mregparm=3 \
> diff --git a/lib/efi/efi_app.c b/lib/efi/efi_app.c
> index c5eb816655ea..e79fa5dad176 100644
> --- a/lib/efi/efi_app.c
> +++ b/lib/efi/efi_app.c
> @@ -68,49 +68,6 @@ int efi_get_mmap(struct efi_mem_desc **descp, int *sizep, uint *keyp,
> return 0;
> }
>
> -/**
> - * 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;
> -}
> -
> static efi_status_t setup_memory(struct efi_priv *priv)
> {
> struct efi_boot_services *boot = priv->boot;
> @@ -179,150 +136,6 @@ static void free_memory(struct efi_priv *priv)
> global_data_ptr = NULL;
> }
>
> -/**
> - * 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;
> -}
> -
> -/**
> - * dm_scan_other() - Scan for UEFI devices that should be available to U-Boot
> - *
> - * This sets up block devices within U-Boot for those found in UEFI. With this,
> - * U-Boot can access those devices
> - *
> - * @pre_reloc_only: true to only bind pre-relocation devices (ignored)
> - * Returns: 0 on success, -ve on error
> - */
> -int dm_scan_other(bool pre_reloc_only)
> -{
> - if (gd->flags & GD_FLG_RELOC) {
> - int ret;
> -
> - ret = setup_block();
> - if (ret)
> - return ret;
> - }
> -
> - return 0;
> -}
> -
> static void scan_tables(struct efi_system_table *sys_table)
> {
> efi_guid_t acpi = EFI_ACPI_TABLE_GUID;
> diff --git a/lib/efi/efi_app_init.c b/lib/efi/efi_app_init.c
> new file mode 100644
> index 000000000000..c5e4192fe06c
> --- /dev/null
> +++ b/lib/efi/efi_app_init.c
> @@ -0,0 +1,205 @@
> +// 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;
> +}
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2023-12-25 10:49 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2023-12-19 14:27 [PATCH v4 0/1] efi: Minor improvements for the EFI app Simon Glass
2023-12-19 14:27 ` [PATCH v4 1/1] efi: Avoid using dm_scan_other() Simon Glass
2023-12-25 10:49 ` Heinrich Schuchardt
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