mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-24 02:48:51 +09:00
296 lines
6.8 KiB
C
296 lines
6.8 KiB
C
![]() |
/*
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* Copyright (C) 2018 Intel Corporation <www.intel.com>
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*
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* SPDX-License-Identifier: GPL-2.0
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*/
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#include <common.h>
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#include <dm.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 <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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struct firmware_priv {
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const char *name; /* Filename */
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u32 offset; /* Offset of reading a file */
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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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int of_offset = ofnode_to_offset(node);
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struct udevice *dev;
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ret = device_get_global_by_of_offset(of_offset, &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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* @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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* @firmwarep: Pointer to pointer to firmware image.
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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(const char *name, void *dbuf,
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size_t size, u32 offset,
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struct firmware **firmwarep)
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{
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if (!name || name[0] == '\0')
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return -EINVAL;
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/* No memory allocation is required if *firmwarep is allocated */
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if (!(*firmwarep)) {
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(*firmwarep) = calloc(1, sizeof(struct firmware));
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if (!(*firmwarep))
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return -ENOMEM;
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(*firmwarep)->priv = calloc(1, sizeof(struct firmware_priv));
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if (!(*firmwarep)->priv) {
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free(*firmwarep);
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return -ENOMEM;
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}
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} else if (!(*firmwarep)->priv) {
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(*firmwarep)->priv = calloc(1, sizeof(struct firmware_priv));
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if (!(*firmwarep)->priv) {
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free(*firmwarep);
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return -ENOMEM;
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}
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}
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((struct firmware_priv *)((*firmwarep)->priv))->name = name;
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((struct firmware_priv *)((*firmwarep)->priv))->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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* release_firmware - Release the resource associated with a firmware image
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* @firmware: Firmware resource to release
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*/
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void release_firmware(struct firmware *firmware)
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{
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if (firmware) {
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if (firmware->priv) {
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free(firmware->priv);
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firmware->priv = NULL;
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}
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free(firmware);
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}
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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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* @plat: Platform data such as storage and partition firmware loading from.
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* @firmware: pointer to firmware image.
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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 device_platdata *plat,
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struct firmware *firmware)
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{
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struct firmware_priv *fw_priv = NULL;
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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(plat);
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}
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if (ret)
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goto out;
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fw_priv = firmware->priv;
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ret = fs_read(fw_priv->name, (ulong)map_to_sysmem(firmware->data),
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fw_priv->offset, firmware->size, &actread);
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if (ret) {
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debug("Error: %d Failed to read %s from flash %lld != %d.\n",
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ret, fw_priv->name, actread, firmware->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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* @plat: Platform data such as storage and partition firmware loading from.
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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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* @firmwarep: Pointer to firmware image.
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*
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* The firmware is loaded directly into the buffer pointed to by @buf and
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* the @firmwarep data member is pointed at @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 device_platdata *plat,
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const char *name,
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void *buf, size_t size, u32 offset,
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struct firmware **firmwarep)
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{
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int ret;
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if (!plat)
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return -EINVAL;
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ret = _request_firmware_prepare(name, buf, size, offset, firmwarep);
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if (ret < 0) /* error */
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return ret;
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ret = fw_get_filesystem_firmware(plat, *firmwarep);
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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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const char *fs_loader_path;
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u32 phandlepart[2];
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fs_loader_path = ofnode_get_chosen_prop("firmware-loader");
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if (fs_loader_path) {
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ofnode fs_loader_node;
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fs_loader_node = ofnode_path(fs_loader_path);
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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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}
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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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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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};
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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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