diff options
Diffstat (limited to 'common')
| -rw-r--r-- | common/Makefile | 1 | ||||
| -rw-r--r-- | common/splash_source.c | 176 |
2 files changed, 177 insertions, 0 deletions
diff --git a/common/Makefile b/common/Makefile index 94554f2..0f1416d 100644 --- a/common/Makefile +++ b/common/Makefile @@ -196,6 +196,7 @@ obj-$(CONFIG_CMD_KGDB) += kgdb.o kgdb_stubs.o obj-$(CONFIG_I2C_EDID) += edid.o obj-$(CONFIG_KALLSYMS) += kallsyms.o obj-y += splash.o +obj-$(CONFIG_SPLASH_SOURCE) += splash_source.o obj-$(CONFIG_LCD) += lcd.o lcd_console.o obj-$(CONFIG_LYNXKDI) += lynxkdi.o obj-$(CONFIG_MENU) += menu.o diff --git a/common/splash_source.c b/common/splash_source.c new file mode 100644 index 0000000..d1bb5a4 --- /dev/null +++ b/common/splash_source.c @@ -0,0 +1,176 @@ +/* + * (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 <splash.h> +#include <spi_flash.h> +#include <spi.h> +#include <bmp_layout.h> + +DECLARE_GLOBAL_DATA_PTR; + +#ifdef CONFIG_SPI_FLASH +static struct spi_flash *sf; +static int splash_sf_read(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(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(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(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(bmp_load_addr, offset, read_size); + case SPLASH_STORAGE_SF: + return splash_sf_read(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(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(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; +} + +/** + * 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 = getenv("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; +} + +/** + * 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 = 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; + } + + splash_location = select_splash_location(locations, size); + if (!splash_location) + return -EINVAL; + + return splash_load_raw(splash_location, bmp_load_addr); +} |