--- /dev/null
+/*
+ * Copyright (C) 2018 Intel Corporation <www.intel.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <blk.h>
+#include <fs.h>
+#include <fs_loader.h>
+#include <linux/string.h>
+#include <mapmem.h>
+#include <malloc.h>
+#include <spl.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct firmware_priv {
+ const char *name; /* Filename */
+ u32 offset; /* Offset of reading a file */
+};
+
+#ifdef CONFIG_CMD_UBIFS
+static int mount_ubifs(char *mtdpart, char *ubivol)
+{
+ int ret = ubi_part(mtdpart, NULL);
+
+ if (ret) {
+ debug("Cannot find mtd partition %s\n", mtdpart);
+ return ret;
+ }
+
+ return cmd_ubifs_mount(ubivol);
+}
+
+static int umount_ubifs(void)
+{
+ return cmd_ubifs_umount();
+}
+#else
+static int mount_ubifs(char *mtdpart, char *ubivol)
+{
+ debug("Error: Cannot load image: no UBIFS support\n");
+ return -ENOSYS;
+}
+#endif
+
+static int select_fs_dev(struct device_platdata *plat)
+{
+ int ret;
+
+ if (plat->phandlepart.phandle) {
+ ofnode node;
+
+ node = ofnode_get_by_phandle(plat->phandlepart.phandle);
+
+ int of_offset = ofnode_to_offset(node);
+
+ struct udevice *dev;
+
+ ret = device_get_global_by_of_offset(of_offset, &dev);
+ if (!ret) {
+ struct blk_desc *desc = blk_get_by_device(dev);
+ if (desc) {
+ ret = fs_set_blk_dev_with_part(desc,
+ plat->phandlepart.partition);
+ } else {
+ debug("%s: No device found\n", __func__);
+ return -ENODEV;
+ }
+ }
+ } else if (plat->mtdpart && plat->ubivol) {
+ ret = mount_ubifs(plat->mtdpart, plat->ubivol);
+ if (ret)
+ return ret;
+
+ ret = fs_set_blk_dev("ubi", NULL, FS_TYPE_UBIFS);
+ } else {
+ debug("Error: unsupported storage device.\n");
+ return -ENODEV;
+ }
+
+ if (ret)
+ debug("Error: could not access storage.\n");
+
+ return ret;
+}
+
+/**
+ * _request_firmware_prepare - Prepare firmware struct.
+ *
+ * @name: Name of firmware file.
+ * @dbuf: Address of buffer to load firmware into.
+ * @size: Size of buffer.
+ * @offset: Offset of a file for start reading into buffer.
+ * @firmwarep: Pointer to pointer to firmware image.
+ *
+ * Return: Negative value if fail, 0 for successful.
+ */
+static int _request_firmware_prepare(const char *name, void *dbuf,
+ size_t size, u32 offset,
+ struct firmware **firmwarep)
+{
+ if (!name || name[0] == '\0')
+ return -EINVAL;
+
+ /* No memory allocation is required if *firmwarep is allocated */
+ if (!(*firmwarep)) {
+ (*firmwarep) = calloc(1, sizeof(struct firmware));
+ if (!(*firmwarep))
+ return -ENOMEM;
+
+ (*firmwarep)->priv = calloc(1, sizeof(struct firmware_priv));
+ if (!(*firmwarep)->priv) {
+ free(*firmwarep);
+ return -ENOMEM;
+ }
+ } else if (!(*firmwarep)->priv) {
+ (*firmwarep)->priv = calloc(1, sizeof(struct firmware_priv));
+ if (!(*firmwarep)->priv) {
+ free(*firmwarep);
+ return -ENOMEM;
+ }
+ }
+
+ ((struct firmware_priv *)((*firmwarep)->priv))->name = name;
+ ((struct firmware_priv *)((*firmwarep)->priv))->offset = offset;
+ (*firmwarep)->data = dbuf;
+ (*firmwarep)->size = size;
+
+ return 0;
+}
+
+/**
+ * release_firmware - Release the resource associated with a firmware image
+ * @firmware: Firmware resource to release
+ */
+void release_firmware(struct firmware *firmware)
+{
+ if (firmware) {
+ if (firmware->priv) {
+ free(firmware->priv);
+ firmware->priv = NULL;
+ }
+ free(firmware);
+ }
+}
+
+/**
+ * fw_get_filesystem_firmware - load firmware into an allocated buffer.
+ * @plat: Platform data such as storage and partition firmware loading from.
+ * @firmware: pointer to firmware image.
+ *
+ * Return: Size of total read, negative value when error.
+ */
+static int fw_get_filesystem_firmware(struct device_platdata *plat,
+ struct firmware *firmware)
+{
+ struct firmware_priv *fw_priv = NULL;
+ loff_t actread;
+ char *storage_interface, *dev_part, *ubi_mtdpart, *ubi_volume;
+ int ret;
+
+ storage_interface = env_get("storage_interface");
+ dev_part = env_get("fw_dev_part");
+ ubi_mtdpart = env_get("fw_ubi_mtdpart");
+ ubi_volume = env_get("fw_ubi_volume");
+
+ if (storage_interface && dev_part) {
+ ret = fs_set_blk_dev(storage_interface, dev_part, FS_TYPE_ANY);
+ } else if (storage_interface && ubi_mtdpart && ubi_volume) {
+ ret = mount_ubifs(ubi_mtdpart, ubi_volume);
+ if (ret)
+ return ret;
+
+ if (!strcmp("ubi", storage_interface))
+ ret = fs_set_blk_dev(storage_interface, NULL,
+ FS_TYPE_UBIFS);
+ else
+ ret = -ENODEV;
+ } else {
+ ret = select_fs_dev(plat);
+ }
+
+ if (ret)
+ goto out;
+
+ fw_priv = firmware->priv;
+
+ ret = fs_read(fw_priv->name, (ulong)map_to_sysmem(firmware->data),
+ fw_priv->offset, firmware->size, &actread);
+ if (ret) {
+ debug("Error: %d Failed to read %s from flash %lld != %d.\n",
+ ret, fw_priv->name, actread, firmware->size);
+ } else {
+ ret = actread;
+ }
+
+out:
+#ifdef CONFIG_CMD_UBIFS
+ umount_ubifs();
+#endif
+ return ret;
+}
+
+/**
+ * request_firmware_into_buf - Load firmware into a previously allocated buffer.
+ * @plat: Platform data such as storage and partition firmware loading from.
+ * @name: Name of firmware file.
+ * @buf: Address of buffer to load firmware into.
+ * @size: Size of buffer.
+ * @offset: Offset of a file for start reading into buffer.
+ * @firmwarep: Pointer to firmware image.
+ *
+ * The firmware is loaded directly into the buffer pointed to by @buf and
+ * the @firmwarep data member is pointed at @buf.
+ *
+ * Return: Size of total read, negative value when error.
+ */
+int request_firmware_into_buf(struct device_platdata *plat,
+ const char *name,
+ void *buf, size_t size, u32 offset,
+ struct firmware **firmwarep)
+{
+ int ret;
+
+ if (!plat)
+ return -EINVAL;
+
+ ret = _request_firmware_prepare(name, buf, size, offset, firmwarep);
+ if (ret < 0) /* error */
+ return ret;
+
+ ret = fw_get_filesystem_firmware(plat, *firmwarep);
+
+ return ret;
+}
+
+static int fs_loader_ofdata_to_platdata(struct udevice *dev)
+{
+ const char *fs_loader_path;
+ u32 phandlepart[2];
+
+ fs_loader_path = ofnode_get_chosen_prop("firmware-loader");
+
+ if (fs_loader_path) {
+ ofnode fs_loader_node;
+
+ fs_loader_node = ofnode_path(fs_loader_path);
+ if (ofnode_valid(fs_loader_node)) {
+ struct device_platdata *plat;
+ plat = dev->platdata;
+
+ if (!ofnode_read_u32_array(fs_loader_node,
+ "phandlepart",
+ phandlepart, 2)) {
+ plat->phandlepart.phandle = phandlepart[0];
+ plat->phandlepart.partition = phandlepart[1];
+ }
+
+ plat->mtdpart = (char *)ofnode_read_string(
+ fs_loader_node, "mtdpart");
+
+ plat->ubivol = (char *)ofnode_read_string(
+ fs_loader_node, "ubivol");
+ }
+ }
+
+ return 0;
+}
+
+static int fs_loader_probe(struct udevice *dev)
+{
+ return 0;
+};
+
+static const struct udevice_id fs_loader_ids[] = {
+ { .compatible = "u-boot,fs-loader"},
+ { }
+};
+
+U_BOOT_DRIVER(fs_loader) = {
+ .name = "fs-loader",
+ .id = UCLASS_FS_FIRMWARE_LOADER,
+ .of_match = fs_loader_ids,
+ .probe = fs_loader_probe,
+ .ofdata_to_platdata = fs_loader_ofdata_to_platdata,
+ .platdata_auto_alloc_size = sizeof(struct device_platdata),
+};
+
+UCLASS_DRIVER(fs_loader) = {
+ .id = UCLASS_FS_FIRMWARE_LOADER,
+ .name = "fs-loader",
+};
--- /dev/null
+/*
+ * Copyright (C) 2018 Intel Corporation <www.intel.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+#ifndef _FS_LOADER_H_
+#define _FS_LOADER_H_
+
+#include <dm.h>
+
+/**
+ * struct firmware - A place for storing firmware and its attribute data.
+ *
+ * This holds information about a firmware and its content.
+ *
+ * @size: Size of a file
+ * @data: Buffer for file
+ * @priv: Firmware loader private fields
+ */
+struct firmware {
+ size_t size;
+ const u8 *data;
+ void *priv;
+};
+
+/**
+ * struct phandle_part - A place for storing phandle of node and its partition
+ *
+ * This holds information about a phandle of the block device, and its
+ * partition where the firmware would be loaded from.
+ *
+ * @phandle: Phandle of storage device node
+ * @partition: Partition of block device
+ */
+struct phandle_part {
+ u32 phandle;
+ u32 partition;
+};
+
+/**
+ * struct phandle_part - A place for storing all supported storage devices
+ *
+ * This holds information about all supported storage devices for driver use.
+ *
+ * @phandlepart: Attribute data for block device.
+ * @mtdpart: MTD partition for ubi partition.
+ * @ubivol: UBI volume-name for ubifsmount.
+ */
+struct device_platdata {
+ struct phandle_part phandlepart;
+ char *mtdpart;
+ char *ubivol;
+};
+
+/**
+ * release_firmware - Release the resource associated with a firmware image
+ * @firmware: Firmware resource to release
+ */
+void release_firmware(struct firmware *firmware);
+
+/**
+ * request_firmware_into_buf - Load firmware into a previously allocated buffer.
+ * @plat: Platform data such as storage and partition firmware loading from.
+ * @name: Name of firmware file.
+ * @buf: Address of buffer to load firmware into.
+ * @size: Size of buffer.
+ * @offset: Offset of a file for start reading into buffer.
+ * @firmwarep: Pointer to firmware image.
+ *
+ * The firmware is loaded directly into the buffer pointed to by @buf and
+ * the @firmwarep data member is pointed at @buf.
+ *
+ * Return: Size of total read, negative value when error.
+ */
+int request_firmware_into_buf(struct device_platdata *plat,
+ const char *name,
+ void *buf, size_t size, u32 offset,
+ struct firmware **firmwarep);
+#endif
projects / u-boot.git / commitdiff