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f82eb2fa5d
Move board/compulab/common/splash.c code to common/splash_source.c to make it available for everybody. This move renames cl_splash_screen_prepare() to splash_source_load(), and the compilation of this code is conditional on CONFIG_SPLASH_SOURCE. splash_source features: * Provide a standardized way for declaring board specific splash screen locations * Provide existing routines for auto loading the splash image from the locations as declared by the board * Introduce the "splashsource" environment variable, which makes it possible to select the splash image source. cm-t35 and cm-fx6 are updated to use the modified version. Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il> Cc: Stefano Babic <sbabic@denx.de> Cc: Tom Rini <trini@ti.com> Cc: Igor Grinberg <grinberg@compulab.co.il> Cc: Anatolij Gustschin <agust@denx.de> Reviewed-by: Tom Rini <trini@ti.com> Acked-by: Igor Grinberg <grinberg@compulab.co.il>
177 lines
4.6 KiB
C
177 lines
4.6 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 <nand.h>
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#include <errno.h>
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#include <splash.h>
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#include <spi_flash.h>
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#include <spi.h>
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#include <bmp_layout.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(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(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(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(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(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(bmp_load_addr, offset, read_size);
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case SPLASH_STORAGE_SF:
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return splash_sf_read(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(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(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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/**
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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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/**
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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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return splash_load_raw(splash_location, bmp_load_addr);
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}
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