u-boot/common/splash_source.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

413 lines
9.8 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2014 CompuLab, Ltd. <www.compulab.co.il>
*
* Authors: Igor Grinberg <grinberg@compulab.co.il>
*/
#include <common.h>
#include <bmp_layout.h>
#include <errno.h>
#include <fs.h>
#include <fdt_support.h>
#include <image.h>
#include <nand.h>
#include <sata.h>
#include <spi.h>
#include <spi_flash.h>
#include <splash.h>
#include <usb.h>
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_SPI_FLASH
static struct spi_flash *sf;
static int splash_sf_read_raw(u32 bmp_load_addr, int offset, size_t read_size)
{
if (!sf) {
sf = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
CONFIG_SF_DEFAULT_CS,
CONFIG_SF_DEFAULT_SPEED,
CONFIG_SF_DEFAULT_MODE);
if (!sf)
return -ENODEV;
}
return spi_flash_read(sf, offset, read_size, (void *)bmp_load_addr);
}
#else
static int splash_sf_read_raw(u32 bmp_load_addr, int offset, size_t read_size)
{
debug("%s: sf support not available\n", __func__);
return -ENOSYS;
}
#endif
#ifdef CONFIG_CMD_NAND
static int splash_nand_read_raw(u32 bmp_load_addr, int offset, size_t read_size)
{
struct mtd_info *mtd = get_nand_dev_by_index(nand_curr_device);
return nand_read_skip_bad(mtd, offset,
&read_size, NULL,
mtd->size,
(u_char *)bmp_load_addr);
}
#else
static int splash_nand_read_raw(u32 bmp_load_addr, int offset, size_t read_size)
{
debug("%s: nand support not available\n", __func__);
return -ENOSYS;
}
#endif
static int splash_storage_read_raw(struct splash_location *location,
u32 bmp_load_addr, size_t read_size)
{
u32 offset;
if (!location)
return -EINVAL;
offset = location->offset;
switch (location->storage) {
case SPLASH_STORAGE_NAND:
return splash_nand_read_raw(bmp_load_addr, offset, read_size);
case SPLASH_STORAGE_SF:
return splash_sf_read_raw(bmp_load_addr, offset, read_size);
default:
printf("Unknown splash location\n");
}
return -EINVAL;
}
static int splash_load_raw(struct splash_location *location, u32 bmp_load_addr)
{
struct bmp_header *bmp_hdr;
int res;
size_t bmp_size, bmp_header_size = sizeof(struct bmp_header);
if (bmp_load_addr + bmp_header_size >= gd->start_addr_sp)
goto splash_address_too_high;
res = splash_storage_read_raw(location, bmp_load_addr, bmp_header_size);
if (res < 0)
return res;
bmp_hdr = (struct bmp_header *)bmp_load_addr;
bmp_size = le32_to_cpu(bmp_hdr->file_size);
if (bmp_load_addr + bmp_size >= gd->start_addr_sp)
goto splash_address_too_high;
return splash_storage_read_raw(location, bmp_load_addr, bmp_size);
splash_address_too_high:
printf("Error: splashimage address too high. Data overwrites U-Boot and/or placed beyond DRAM boundaries.\n");
return -EFAULT;
}
static int splash_select_fs_dev(struct splash_location *location)
{
int res;
switch (location->storage) {
case SPLASH_STORAGE_MMC:
res = fs_set_blk_dev("mmc", location->devpart, FS_TYPE_ANY);
break;
case SPLASH_STORAGE_USB:
res = fs_set_blk_dev("usb", location->devpart, FS_TYPE_ANY);
break;
case SPLASH_STORAGE_SATA:
res = fs_set_blk_dev("sata", location->devpart, FS_TYPE_ANY);
break;
case SPLASH_STORAGE_NAND:
if (location->ubivol != NULL)
res = fs_set_blk_dev("ubi", NULL, FS_TYPE_UBIFS);
else
res = -ENODEV;
break;
default:
printf("Error: unsupported location storage.\n");
return -ENODEV;
}
if (res)
printf("Error: could not access storage.\n");
return res;
}
#ifdef CONFIG_USB_STORAGE
static int splash_init_usb(void)
{
int err;
err = usb_init();
if (err)
return err;
#ifndef CONFIG_DM_USB
err = usb_stor_scan(1) < 0 ? -ENODEV : 0;
#endif
return err;
}
#else
static inline int splash_init_usb(void)
{
printf("Cannot load splash image: no USB support\n");
return -ENOSYS;
}
#endif
#ifdef CONFIG_SATA
static int splash_init_sata(void)
{
return sata_probe(0);
}
#else
static inline int splash_init_sata(void)
{
printf("Cannot load splash image: no SATA support\n");
return -ENOSYS;
}
#endif
#ifdef CONFIG_CMD_UBIFS
static int splash_mount_ubifs(struct splash_location *location)
{
int res;
char cmd[32];
sprintf(cmd, "ubi part %s", location->mtdpart);
res = run_command(cmd, 0);
if (res)
return res;
sprintf(cmd, "ubifsmount %s", location->ubivol);
res = run_command(cmd, 0);
return res;
}
static inline int splash_umount_ubifs(void)
{
return run_command("ubifsumount", 0);
}
#else
static inline int splash_mount_ubifs(struct splash_location *location)
{
printf("Cannot load splash image: no UBIFS support\n");
return -ENOSYS;
}
static inline int splash_umount_ubifs(void)
{
printf("Cannot unmount UBIFS: no UBIFS support\n");
return -ENOSYS;
}
#endif
#define SPLASH_SOURCE_DEFAULT_FILE_NAME "splash.bmp"
static int splash_load_fs(struct splash_location *location, u32 bmp_load_addr)
{
int res = 0;
loff_t bmp_size;
loff_t actread;
char *splash_file;
splash_file = env_get("splashfile");
if (!splash_file)
splash_file = SPLASH_SOURCE_DEFAULT_FILE_NAME;
if (location->storage == SPLASH_STORAGE_USB)
res = splash_init_usb();
if (location->storage == SPLASH_STORAGE_SATA)
res = splash_init_sata();
if (location->ubivol != NULL)
res = splash_mount_ubifs(location);
if (res)
return res;
res = splash_select_fs_dev(location);
if (res)
goto out;
res = fs_size(splash_file, &bmp_size);
if (res) {
printf("Error (%d): cannot determine file size\n", res);
goto out;
}
if (bmp_load_addr + bmp_size >= gd->start_addr_sp) {
printf("Error: splashimage address too high. Data overwrites U-Boot and/or placed beyond DRAM boundaries.\n");
res = -EFAULT;
goto out;
}
splash_select_fs_dev(location);
res = fs_read(splash_file, bmp_load_addr, 0, 0, &actread);
out:
if (location->ubivol != NULL)
splash_umount_ubifs();
return res;
}
/**
* select_splash_location - return the splash location based on board support
* and env variable "splashsource".
*
* @locations: An array of supported splash locations.
* @size: Size of splash_locations array.
*
* @return: If a null set of splash locations is given, or
* splashsource env variable is set to unsupported value
* return NULL.
* If splashsource env variable is not defined
* return the first entry in splash_locations as default.
* If splashsource env variable contains a supported value
* return the location selected by splashsource.
*/
static struct splash_location *select_splash_location(
struct splash_location *locations, uint size)
{
int i;
char *env_splashsource;
if (!locations || size == 0)
return NULL;
env_splashsource = env_get("splashsource");
if (env_splashsource == NULL)
return &locations[0];
for (i = 0; i < size; i++) {
if (!strcmp(locations[i].name, env_splashsource))
return &locations[i];
}
printf("splashsource env variable set to unsupported value\n");
return NULL;
}
#ifdef CONFIG_FIT
static int splash_load_fit(struct splash_location *location, u32 bmp_load_addr)
{
int res;
int node_offset;
int splash_offset;
int splash_size;
struct image_header *img_header;
const u32 *fit_header;
u32 fit_size;
const size_t header_size = sizeof(struct image_header);
/* Read in image header */
res = splash_storage_read_raw(location, bmp_load_addr, header_size);
if (res < 0)
return res;
img_header = (struct image_header *)bmp_load_addr;
if (image_get_magic(img_header) != FDT_MAGIC) {
printf("Could not find FDT magic\n");
return -EINVAL;
}
fit_size = fdt_totalsize(img_header);
/* Read in entire FIT */
fit_header = (const u32 *)(bmp_load_addr + header_size);
res = splash_storage_read_raw(location, (u32)fit_header, fit_size);
if (res < 0)
return res;
res = fit_check_format(fit_header);
if (!res) {
debug("Could not find valid FIT image\n");
return -EINVAL;
}
node_offset = fit_image_get_node(fit_header, location->name);
if (node_offset < 0) {
debug("Could not find splash image '%s' in FIT\n",
location->name);
return -ENOENT;
}
res = fit_image_get_data_offset(fit_header, node_offset,
&splash_offset);
if (res < 0) {
printf("Failed to load splash image (err=%d)\n", res);
return res;
}
res = fit_image_get_data_size(fit_header, node_offset, &splash_size);
if (res < 0) {
printf("Failed to load splash image (err=%d)\n", res);
return res;
}
/* Align data offset to 4-byte boundrary */
fit_size = fdt_totalsize(fit_header);
fit_size = (fit_size + 3) & ~3;
/* Read in the splash data */
location->offset = (location->offset + fit_size + splash_offset);
res = splash_storage_read_raw(location, bmp_load_addr , splash_size);
if (res < 0)
return res;
return 0;
}
#endif /* CONFIG_FIT */
/**
* splash_source_load - load splash image from a supported location.
*
* Select a splash image location based on the value of splashsource environment
* variable and the board supported splash source locations, and load a
* splashimage to the address pointed to by splashimage environment variable.
*
* @locations: An array of supported splash locations.
* @size: Size of splash_locations array.
*
* @return: 0 on success, negative value on failure.
*/
int splash_source_load(struct splash_location *locations, uint size)
{
struct splash_location *splash_location;
char *env_splashimage_value;
u32 bmp_load_addr;
env_splashimage_value = env_get("splashimage");
if (env_splashimage_value == NULL)
return -ENOENT;
bmp_load_addr = simple_strtoul(env_splashimage_value, 0, 16);
if (bmp_load_addr == 0) {
printf("Error: bad splashimage address specified\n");
return -EFAULT;
}
splash_location = select_splash_location(locations, size);
if (!splash_location)
return -EINVAL;
if (splash_location->flags == SPLASH_STORAGE_RAW)
return splash_load_raw(splash_location, bmp_load_addr);
else if (splash_location->flags == SPLASH_STORAGE_FS)
return splash_load_fs(splash_location, bmp_load_addr);
#ifdef CONFIG_FIT
else if (splash_location->flags == SPLASH_STORAGE_FIT)
return splash_load_fit(splash_location, bmp_load_addr);
#endif
return -EINVAL;
}