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/*
* (C) Copyright 2014 CompuLab, Ltd. <www.compulab.co.il>
*
* Authors: Igor Grinberg <grinberg@compulab.co.il>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <nand.h>
#include <errno.h>
#include <bmp_layout.h>
#include "common.h"
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_CMD_NAND
static int splash_nand_read(u32 bmp_load_addr, int offset, size_t read_size)
{
return nand_read_skip_bad(&nand_info[nand_curr_device], offset,
&read_size, NULL,
nand_info[nand_curr_device].size,
(u_char *)bmp_load_addr);
}
#else
static int splash_nand_read(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(u32 bmp_load_addr, int offset, size_t read_size)
{
return splash_nand_read(bmp_load_addr, offset, read_size);
}
static int splash_load_raw(u32 bmp_load_addr, int offset)
{
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(bmp_load_addr, offset, 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(bmp_load_addr, offset, 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;
}
int cl_splash_screen_prepare(int offset)
{
char *env_splashimage_value;
u32 bmp_load_addr;
env_splashimage_value = getenv("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;
}
return splash_load_raw(bmp_load_addr, offset);
}
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