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https://github.com/u-boot/u-boot.git
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3cc6e7070d
Passing NULL to fs_read() for actread value results in hanging U-Boot at least on our ARM plattform (TI AM335x). Since fs_read() and following functions do not catch nullpointers, writing to 0x0 occurs. Passing a local dummy var instead of NULL solves this issue. Signed-off-by: Jonathan Golder <jonathan.golder@kurz-elektronik.de> Cc: Anatolij Gustschin <agust@denx.de>
409 lines
9.7 KiB
C
409 lines
9.7 KiB
C
/*
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* (C) Copyright 2014 CompuLab, Ltd. <www.compulab.co.il>
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*
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* Authors: Igor Grinberg <grinberg@compulab.co.il>
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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 <bmp_layout.h>
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#include <errno.h>
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#include <fs.h>
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#include <fdt_support.h>
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#include <image.h>
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#include <nand.h>
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#include <sata.h>
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#include <spi.h>
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#include <spi_flash.h>
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#include <splash.h>
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#include <usb.h>
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DECLARE_GLOBAL_DATA_PTR;
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#ifdef CONFIG_SPI_FLASH
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static struct spi_flash *sf;
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static int splash_sf_read_raw(u32 bmp_load_addr, int offset, size_t read_size)
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{
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if (!sf) {
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sf = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
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CONFIG_SF_DEFAULT_CS,
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CONFIG_SF_DEFAULT_SPEED,
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CONFIG_SF_DEFAULT_MODE);
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if (!sf)
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return -ENODEV;
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}
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return spi_flash_read(sf, offset, read_size, (void *)bmp_load_addr);
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}
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#else
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static int splash_sf_read_raw(u32 bmp_load_addr, int offset, size_t read_size)
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{
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debug("%s: sf support not available\n", __func__);
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return -ENOSYS;
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}
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#endif
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#ifdef CONFIG_CMD_NAND
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static int splash_nand_read_raw(u32 bmp_load_addr, int offset, size_t read_size)
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{
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return nand_read_skip_bad(nand_info[nand_curr_device], offset,
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&read_size, NULL,
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nand_info[nand_curr_device]->size,
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(u_char *)bmp_load_addr);
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}
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#else
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static int splash_nand_read_raw(u32 bmp_load_addr, int offset, size_t read_size)
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{
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debug("%s: nand support not available\n", __func__);
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return -ENOSYS;
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}
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#endif
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static int splash_storage_read_raw(struct splash_location *location,
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u32 bmp_load_addr, size_t read_size)
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{
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u32 offset;
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if (!location)
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return -EINVAL;
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offset = location->offset;
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switch (location->storage) {
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case SPLASH_STORAGE_NAND:
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return splash_nand_read_raw(bmp_load_addr, offset, read_size);
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case SPLASH_STORAGE_SF:
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return splash_sf_read_raw(bmp_load_addr, offset, read_size);
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default:
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printf("Unknown splash location\n");
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}
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return -EINVAL;
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}
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static int splash_load_raw(struct splash_location *location, u32 bmp_load_addr)
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{
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struct bmp_header *bmp_hdr;
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int res;
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size_t bmp_size, bmp_header_size = sizeof(struct bmp_header);
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if (bmp_load_addr + bmp_header_size >= gd->start_addr_sp)
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goto splash_address_too_high;
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res = splash_storage_read_raw(location, bmp_load_addr, bmp_header_size);
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if (res < 0)
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return res;
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bmp_hdr = (struct bmp_header *)bmp_load_addr;
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bmp_size = le32_to_cpu(bmp_hdr->file_size);
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if (bmp_load_addr + bmp_size >= gd->start_addr_sp)
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goto splash_address_too_high;
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return splash_storage_read_raw(location, bmp_load_addr, bmp_size);
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splash_address_too_high:
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printf("Error: splashimage address too high. Data overwrites U-Boot and/or placed beyond DRAM boundaries.\n");
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return -EFAULT;
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}
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static int splash_select_fs_dev(struct splash_location *location)
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{
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int res;
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switch (location->storage) {
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case SPLASH_STORAGE_MMC:
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res = fs_set_blk_dev("mmc", location->devpart, FS_TYPE_ANY);
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break;
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case SPLASH_STORAGE_USB:
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res = fs_set_blk_dev("usb", location->devpart, FS_TYPE_ANY);
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break;
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case SPLASH_STORAGE_SATA:
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res = fs_set_blk_dev("sata", location->devpart, FS_TYPE_ANY);
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break;
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case SPLASH_STORAGE_NAND:
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if (location->ubivol != NULL)
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res = fs_set_blk_dev("ubi", NULL, FS_TYPE_UBIFS);
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else
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res = -ENODEV;
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break;
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default:
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printf("Error: unsupported location storage.\n");
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return -ENODEV;
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}
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if (res)
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printf("Error: could not access storage.\n");
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return res;
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}
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#ifdef CONFIG_USB_STORAGE
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static int splash_init_usb(void)
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{
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int err;
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err = usb_init();
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if (err)
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return err;
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#ifndef CONFIG_DM_USB
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err = usb_stor_scan(1) < 0 ? -ENODEV : 0;
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#endif
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return err;
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}
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#else
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static inline int splash_init_usb(void)
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{
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printf("Cannot load splash image: no USB support\n");
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return -ENOSYS;
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}
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#endif
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#ifdef CONFIG_CMD_SATA
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static int splash_init_sata(void)
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{
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return sata_initialize();
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}
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#else
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static inline int splash_init_sata(void)
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{
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printf("Cannot load splash image: no SATA support\n");
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return -ENOSYS;
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}
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#endif
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#ifdef CONFIG_CMD_UBIFS
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static int splash_mount_ubifs(struct splash_location *location)
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{
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int res;
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char cmd[32];
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sprintf(cmd, "ubi part %s", location->mtdpart);
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res = run_command(cmd, 0);
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if (res)
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return res;
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sprintf(cmd, "ubifsmount %s", location->ubivol);
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res = run_command(cmd, 0);
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return res;
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}
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static inline int splash_umount_ubifs(void)
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{
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return run_command("ubifsumount", 0);
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}
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#else
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static inline int splash_mount_ubifs(struct splash_location *location)
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{
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printf("Cannot load splash image: no UBIFS support\n");
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return -ENOSYS;
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}
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static inline int splash_umount_ubifs(void)
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{
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printf("Cannot unmount UBIFS: no UBIFS support\n");
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return -ENOSYS;
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}
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#endif
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#define SPLASH_SOURCE_DEFAULT_FILE_NAME "splash.bmp"
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static int splash_load_fs(struct splash_location *location, u32 bmp_load_addr)
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{
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int res = 0;
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loff_t bmp_size;
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loff_t actread;
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char *splash_file;
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splash_file = getenv("splashfile");
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if (!splash_file)
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splash_file = SPLASH_SOURCE_DEFAULT_FILE_NAME;
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if (location->storage == SPLASH_STORAGE_USB)
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res = splash_init_usb();
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if (location->storage == SPLASH_STORAGE_SATA)
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res = splash_init_sata();
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if (location->ubivol != NULL)
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res = splash_mount_ubifs(location);
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if (res)
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return res;
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res = splash_select_fs_dev(location);
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if (res)
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goto out;
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res = fs_size(splash_file, &bmp_size);
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if (res) {
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printf("Error (%d): cannot determine file size\n", res);
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goto out;
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}
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if (bmp_load_addr + bmp_size >= gd->start_addr_sp) {
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printf("Error: splashimage address too high. Data overwrites U-Boot and/or placed beyond DRAM boundaries.\n");
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res = -EFAULT;
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goto out;
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}
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splash_select_fs_dev(location);
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res = fs_read(splash_file, bmp_load_addr, 0, 0, &actread);
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out:
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if (location->ubivol != NULL)
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splash_umount_ubifs();
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return res;
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}
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/**
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* select_splash_location - return the splash location based on board support
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* and env variable "splashsource".
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*
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* @locations: An array of supported splash locations.
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* @size: Size of splash_locations array.
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*
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* @return: If a null set of splash locations is given, or
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* splashsource env variable is set to unsupported value
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* return NULL.
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* If splashsource env variable is not defined
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* return the first entry in splash_locations as default.
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* If splashsource env variable contains a supported value
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* return the location selected by splashsource.
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*/
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static struct splash_location *select_splash_location(
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struct splash_location *locations, uint size)
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{
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int i;
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char *env_splashsource;
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if (!locations || size == 0)
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return NULL;
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env_splashsource = getenv("splashsource");
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if (env_splashsource == NULL)
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return &locations[0];
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for (i = 0; i < size; i++) {
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if (!strcmp(locations[i].name, env_splashsource))
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return &locations[i];
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}
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printf("splashsource env variable set to unsupported value\n");
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return NULL;
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}
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#ifdef CONFIG_FIT
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static int splash_load_fit(struct splash_location *location, u32 bmp_load_addr)
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{
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int res;
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int node_offset;
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int splash_offset;
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int splash_size;
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struct image_header *img_header;
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const u32 *fit_header;
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u32 fit_size;
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const size_t header_size = sizeof(struct image_header);
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/* Read in image header */
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res = splash_storage_read_raw(location, bmp_load_addr, header_size);
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if (res < 0)
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return res;
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img_header = (struct image_header *)bmp_load_addr;
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fit_size = fdt_totalsize(img_header);
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/* Read in entire FIT */
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fit_header = (const u32 *)(bmp_load_addr + header_size);
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res = splash_storage_read_raw(location, (u32)fit_header, fit_size);
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if (res < 0)
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return res;
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res = fit_check_format(fit_header);
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if (!res) {
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debug("Could not find valid FIT image\n");
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return -EINVAL;
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}
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node_offset = fit_image_get_node(fit_header, location->name);
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if (node_offset < 0) {
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debug("Could not find splash image '%s' in FIT\n",
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location->name);
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return -ENOENT;
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}
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res = fit_image_get_data_offset(fit_header, node_offset,
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&splash_offset);
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if (res < 0) {
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printf("Failed to load splash image (err=%d)\n", res);
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return res;
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}
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res = fit_image_get_data_size(fit_header, node_offset, &splash_size);
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if (res < 0) {
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printf("Failed to load splash image (err=%d)\n", res);
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return res;
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}
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/* Align data offset to 4-byte boundrary */
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fit_size = fdt_totalsize(fit_header);
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fit_size = (fit_size + 3) & ~3;
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/* Read in the splash data */
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location->offset = (location->offset + fit_size + splash_offset);
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res = splash_storage_read_raw(location, bmp_load_addr , splash_size);
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if (res < 0)
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return res;
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return 0;
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}
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#endif /* CONFIG_FIT */
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/**
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* splash_source_load - load splash image from a supported location.
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*
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* Select a splash image location based on the value of splashsource environment
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* variable and the board supported splash source locations, and load a
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* splashimage to the address pointed to by splashimage environment variable.
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*
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* @locations: An array of supported splash locations.
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* @size: Size of splash_locations array.
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*
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* @return: 0 on success, negative value on failure.
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*/
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int splash_source_load(struct splash_location *locations, uint size)
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{
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struct splash_location *splash_location;
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char *env_splashimage_value;
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u32 bmp_load_addr;
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env_splashimage_value = getenv("splashimage");
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if (env_splashimage_value == NULL)
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return -ENOENT;
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bmp_load_addr = simple_strtoul(env_splashimage_value, 0, 16);
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if (bmp_load_addr == 0) {
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printf("Error: bad splashimage address specified\n");
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return -EFAULT;
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}
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splash_location = select_splash_location(locations, size);
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if (!splash_location)
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return -EINVAL;
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if (splash_location->flags == SPLASH_STORAGE_RAW)
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return splash_load_raw(splash_location, bmp_load_addr);
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else if (splash_location->flags == SPLASH_STORAGE_FS)
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return splash_load_fs(splash_location, bmp_load_addr);
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#ifdef CONFIG_FIT
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else if (splash_location->flags == SPLASH_STORAGE_FIT)
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return splash_load_fit(splash_location, bmp_load_addr);
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#endif
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return -EINVAL;
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}
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