diff options
| -rw-r--r-- | drivers/mtd/spi/Makefile | 1 | ||||
| -rw-r--r-- | drivers/mtd/spi/fsl_espi_spl.c | 77 | ||||
| -rw-r--r-- | drivers/mtd/spi/spi_flash.c | 2 |
3 files changed, 80 insertions, 0 deletions
diff --git a/drivers/mtd/spi/Makefile b/drivers/mtd/spi/Makefile index e537fcf..191138a 100644 --- a/drivers/mtd/spi/Makefile +++ b/drivers/mtd/spi/Makefile @@ -11,6 +11,7 @@ LIB := $(obj)libspi_flash.o ifdef CONFIG_SPL_BUILD COBJS-$(CONFIG_SPL_SPI_LOAD) += spi_spl_load.o +COBJS-$(CONFIG_SPL_SPI_BOOT) += fsl_espi_spl.o endif COBJS-$(CONFIG_SPI_FLASH) += spi_flash.o diff --git a/drivers/mtd/spi/fsl_espi_spl.c b/drivers/mtd/spi/fsl_espi_spl.c new file mode 100644 index 0000000..9e216a6 --- /dev/null +++ b/drivers/mtd/spi/fsl_espi_spl.c @@ -0,0 +1,77 @@ +/* + * Copyright 2013 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + */ + +#include <common.h> +#include <spi_flash.h> +#include <malloc.h> + +#define ESPI_BOOT_IMAGE_SIZE 0x48 +#define ESPI_BOOT_IMAGE_ADDR 0x50 +#define CONFIG_CFG_DATA_SECTOR 0 + +/* + * The main entry for SPI booting. It's necessary that SDRAM is already + * configured and available since this code loads the main U-Boot image + * from SPI into SDRAM and starts it from there. + */ +void spi_boot(void) +{ + void (*uboot)(void) __noreturn; + u32 offset, code_len; + unsigned char *buf = NULL; + struct spi_flash *flash; + + flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS, + CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE); + if (flash == NULL) { + puts("\nspi_flash_probe failed"); + hang(); + } + + /* + * Load U-Boot image from SPI flash into RAM + */ + buf = malloc(flash->page_size); + if (buf == NULL) { + puts("\nmalloc failed"); + hang(); + } + memset(buf, 0, flash->page_size); + + spi_flash_read(flash, CONFIG_CFG_DATA_SECTOR, + flash->page_size, (void *)buf); + offset = *(u32 *)(buf + ESPI_BOOT_IMAGE_ADDR); + /* Skip spl code */ + offset += CONFIG_SYS_SPI_FLASH_U_BOOT_OFFS; + /* Get the code size from offset 0x48 */ + code_len = *(u32 *)(buf + ESPI_BOOT_IMAGE_SIZE); + /* Skip spl code */ + code_len = code_len - CONFIG_SPL_MAX_SIZE; + /* copy code to DDR */ + spi_flash_read(flash, offset, code_len, + (void *)CONFIG_SYS_SPI_FLASH_U_BOOT_DST); + /* + * Jump to U-Boot image + */ + flush_cache(CONFIG_SYS_SPI_FLASH_U_BOOT_DST, code_len); + uboot = (void *)CONFIG_SYS_SPI_FLASH_U_BOOT_START; + (*uboot)(); +} diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index 9814395..5d5055f 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -555,12 +555,14 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, goto err_manufacturer_probe; } #endif +#ifndef CONFIG_SPL_BUILD printf("SF: Detected %s with page size ", flash->name); print_size(flash->sector_size, ", total "); print_size(flash->size, ""); if (flash->memory_map) printf(", mapped at %p", flash->memory_map); puts("\n"); +#endif #ifndef CONFIG_SPI_FLASH_BAR if (flash->size > SPI_FLASH_16MB_BOUN) { puts("SF: Warning - Only lower 16MiB accessible,"); |