driver: Add support of image load for MMC & SPI in SPL

Add support of loading image, binary for MMC and SPI during SPL boot.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

drivers/mmc/fsl_esdhc_spl.c

@@ -19,6 +19,32 @@
 #define MBRDBR_BOOT_SIG_AA	0x1ff
 #define CONFIG_CFG_DATA_SECTOR	0
 
+
+void mmc_spl_load_image(uint32_t offs, unsigned int size, void *vdst)
+{
+	uint blk_start, blk_cnt, err;
+
+	struct mmc *mmc = find_mmc_device(0);
+	if (!mmc) {
+		puts("spl: mmc device not found!!\n");
+		hang();
+	}
+
+	if (mmc_init(mmc)) {
+		puts("MMC init failed\n");
+		return;
+	}
+
+	blk_start = ALIGN(offs, mmc->read_bl_len) / mmc->read_bl_len;
+	blk_cnt = ALIGN(size, mmc->read_bl_len) / mmc->read_bl_len;
+
+	err = mmc->block_dev.block_read(0, blk_start, blk_cnt, vdst);
+	if (err != blk_cnt) {
+		puts("spl: mmc read failed!!\n");
+		hang();
+	}
+}
+
 /*
  * The main entry for mmc booting. It's necessary that SDRAM is already
  * configured and available since this code loads the main U-Boot image

drivers/mtd/spi/fsl_espi_spl.c

@@ -12,6 +12,20 @@
 #define ESPI_BOOT_IMAGE_ADDR	0x50
 #define CONFIG_CFG_DATA_SECTOR	0
 
+void spi_spl_load_image(uint32_t offs, unsigned int size, void *vdst)
+{
+	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();
+	}
+
+	spi_flash_read(flash, offs, size, vdst);
+}
+
 /*
  * 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

include/fsl_esdhc.h

@@ -187,5 +187,6 @@ static inline int fsl_esdhc_mmc_init(bd_t *bis) { return -ENOSYS; }
 static inline void fdt_fixup_esdhc(void *blob, bd_t *bd) {}
 #endif /* CONFIG_FSL_ESDHC */
 void __noreturn mmc_boot(void);
+void mmc_spl_load_image(uint32_t offs, unsigned int size, void *vdst);
 
 #endif  /* __FSL_ESDHC_H__ */

include/spi_flash.h

@@ -158,5 +158,6 @@ static inline int spi_flash_erase(struct spi_flash *flash, u32 offset,
 }
 
 void spi_boot(void) __noreturn;
+void spi_spl_load_image(uint32_t offs, unsigned int size, void *vdst);
 
 #endif /* _SPI_FLASH_H_ */