mirror of
https://github.com/AsahiLinux/u-boot
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295 lines
6.4 KiB
C
295 lines
6.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2018-2019 Intel Corporation <www.intel.com>
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*
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*/
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#include <common.h>
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#include <dm.h>
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#include <env.h>
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#include <errno.h>
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#include <blk.h>
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#include <fs.h>
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#include <fs_loader.h>
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#include <log.h>
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#include <linux/string.h>
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#include <mapmem.h>
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#include <malloc.h>
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#include <spl.h>
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DECLARE_GLOBAL_DATA_PTR;
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/**
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* struct firmware - A place for storing firmware and its attribute data.
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*
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* This holds information about a firmware and its content.
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*
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* @size: Size of a file
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* @data: Buffer for file
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* @priv: Firmware loader private fields
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* @name: Filename
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* @offset: Offset of reading a file
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*/
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struct firmware {
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size_t size;
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const u8 *data;
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const char *name;
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u32 offset;
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};
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#ifdef CONFIG_CMD_UBIFS
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static int mount_ubifs(char *mtdpart, char *ubivol)
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{
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int ret = ubi_part(mtdpart, NULL);
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if (ret) {
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debug("Cannot find mtd partition %s\n", mtdpart);
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return ret;
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}
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return cmd_ubifs_mount(ubivol);
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}
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static int umount_ubifs(void)
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{
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return cmd_ubifs_umount();
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}
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#else
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static int mount_ubifs(char *mtdpart, char *ubivol)
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{
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debug("Error: Cannot load image: no UBIFS support\n");
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return -ENOSYS;
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}
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#endif
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static int select_fs_dev(struct device_platdata *plat)
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{
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int ret;
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if (plat->phandlepart.phandle) {
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ofnode node;
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node = ofnode_get_by_phandle(plat->phandlepart.phandle);
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struct udevice *dev;
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ret = device_get_global_by_ofnode(node, &dev);
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if (!ret) {
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struct blk_desc *desc = blk_get_by_device(dev);
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if (desc) {
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ret = fs_set_blk_dev_with_part(desc,
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plat->phandlepart.partition);
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} else {
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debug("%s: No device found\n", __func__);
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return -ENODEV;
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}
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}
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} else if (plat->mtdpart && plat->ubivol) {
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ret = mount_ubifs(plat->mtdpart, plat->ubivol);
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if (ret)
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return ret;
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ret = fs_set_blk_dev("ubi", NULL, FS_TYPE_UBIFS);
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} else {
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debug("Error: unsupported storage device.\n");
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return -ENODEV;
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}
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if (ret)
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debug("Error: could not access storage.\n");
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return ret;
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}
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/**
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* _request_firmware_prepare - Prepare firmware struct.
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*
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* @dev: An instance of a driver.
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* @name: Name of firmware file.
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* @dbuf: Address of buffer to load firmware into.
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* @size: Size of buffer.
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* @offset: Offset of a file for start reading into buffer.
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*
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* Return: Negative value if fail, 0 for successful.
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*/
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static int _request_firmware_prepare(struct udevice *dev,
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const char *name, void *dbuf,
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size_t size, u32 offset)
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{
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if (!name || name[0] == '\0')
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return -EINVAL;
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struct firmware *firmwarep = dev_get_priv(dev);
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if (!firmwarep)
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return -ENOMEM;
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firmwarep->name = name;
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firmwarep->offset = offset;
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firmwarep->data = dbuf;
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firmwarep->size = size;
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return 0;
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}
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/**
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* fw_get_filesystem_firmware - load firmware into an allocated buffer.
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* @dev: An instance of a driver.
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*
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* Return: Size of total read, negative value when error.
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*/
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static int fw_get_filesystem_firmware(struct udevice *dev)
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{
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loff_t actread;
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char *storage_interface, *dev_part, *ubi_mtdpart, *ubi_volume;
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int ret;
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storage_interface = env_get("storage_interface");
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dev_part = env_get("fw_dev_part");
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ubi_mtdpart = env_get("fw_ubi_mtdpart");
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ubi_volume = env_get("fw_ubi_volume");
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if (storage_interface && dev_part) {
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ret = fs_set_blk_dev(storage_interface, dev_part, FS_TYPE_ANY);
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} else if (storage_interface && ubi_mtdpart && ubi_volume) {
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ret = mount_ubifs(ubi_mtdpart, ubi_volume);
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if (ret)
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return ret;
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if (!strcmp("ubi", storage_interface))
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ret = fs_set_blk_dev(storage_interface, NULL,
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FS_TYPE_UBIFS);
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else
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ret = -ENODEV;
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} else {
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ret = select_fs_dev(dev->platdata);
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}
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if (ret)
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goto out;
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struct firmware *firmwarep = dev_get_priv(dev);
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if (!firmwarep)
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return -ENOMEM;
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ret = fs_read(firmwarep->name, (ulong)map_to_sysmem(firmwarep->data),
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firmwarep->offset, firmwarep->size, &actread);
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if (ret) {
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debug("Error: %d Failed to read %s from flash %lld != %zu.\n",
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ret, firmwarep->name, actread, firmwarep->size);
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} else {
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ret = actread;
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}
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out:
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#ifdef CONFIG_CMD_UBIFS
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umount_ubifs();
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#endif
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return ret;
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}
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/**
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* request_firmware_into_buf - Load firmware into a previously allocated buffer.
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* @dev: An instance of a driver.
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* @name: Name of firmware file.
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* @buf: Address of buffer to load firmware into.
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* @size: Size of buffer.
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* @offset: Offset of a file for start reading into buffer.
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*
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* The firmware is loaded directly into the buffer pointed to by @buf.
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*
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* Return: Size of total read, negative value when error.
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*/
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int request_firmware_into_buf(struct udevice *dev,
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const char *name,
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void *buf, size_t size, u32 offset)
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{
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int ret;
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if (!dev)
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return -EINVAL;
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ret = _request_firmware_prepare(dev, name, buf, size, offset);
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if (ret < 0) /* error */
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return ret;
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ret = fw_get_filesystem_firmware(dev);
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return ret;
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}
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static int fs_loader_ofdata_to_platdata(struct udevice *dev)
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{
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u32 phandlepart[2];
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ofnode fs_loader_node = dev_ofnode(dev);
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if (ofnode_valid(fs_loader_node)) {
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struct device_platdata *plat;
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plat = dev->platdata;
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if (!ofnode_read_u32_array(fs_loader_node,
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"phandlepart",
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phandlepart, 2)) {
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plat->phandlepart.phandle = phandlepart[0];
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plat->phandlepart.partition = phandlepart[1];
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}
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plat->mtdpart = (char *)ofnode_read_string(
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fs_loader_node, "mtdpart");
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plat->ubivol = (char *)ofnode_read_string(
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fs_loader_node, "ubivol");
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}
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return 0;
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}
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static int fs_loader_probe(struct udevice *dev)
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{
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#if CONFIG_IS_ENABLED(DM) && CONFIG_IS_ENABLED(BLK)
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int ret;
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struct device_platdata *plat = dev->platdata;
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if (plat->phandlepart.phandle) {
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ofnode node = ofnode_get_by_phandle(plat->phandlepart.phandle);
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struct udevice *parent_dev = NULL;
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ret = device_get_global_by_ofnode(node, &parent_dev);
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if (!ret) {
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struct udevice *dev;
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ret = blk_get_from_parent(parent_dev, &dev);
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if (ret) {
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debug("fs_loader: No block device: %d\n",
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ret);
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return ret;
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}
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}
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}
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#endif
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return 0;
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};
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static const struct udevice_id fs_loader_ids[] = {
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{ .compatible = "u-boot,fs-loader"},
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{ }
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};
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U_BOOT_DRIVER(fs_loader) = {
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.name = "fs-loader",
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.id = UCLASS_FS_FIRMWARE_LOADER,
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.of_match = fs_loader_ids,
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.probe = fs_loader_probe,
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.ofdata_to_platdata = fs_loader_ofdata_to_platdata,
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.platdata_auto_alloc_size = sizeof(struct device_platdata),
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.priv_auto_alloc_size = sizeof(struct firmware),
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};
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UCLASS_DRIVER(fs_loader) = {
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.id = UCLASS_FS_FIRMWARE_LOADER,
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.name = "fs-loader",
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};
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