1 /* 2 * Copyright 2013 Freescale Semiconductor, Inc. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <spi_flash.h> 9 #include <malloc.h> 10 11 #define ESPI_BOOT_IMAGE_SIZE 0x48 12 #define ESPI_BOOT_IMAGE_ADDR 0x50 13 #define CONFIG_CFG_DATA_SECTOR 0 14 15 void fsl_spi_spl_load_image(uint32_t offs, unsigned int size, void *vdst) 16 { 17 struct spi_flash *flash; 18 19 flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS, 20 CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE); 21 if (flash == NULL) { 22 puts("\nspi_flash_probe failed"); 23 hang(); 24 } 25 26 spi_flash_read(flash, offs, size, vdst); 27 } 28 29 /* 30 * The main entry for SPI booting. It's necessary that SDRAM is already 31 * configured and available since this code loads the main U-Boot image 32 * from SPI into SDRAM and starts it from there. 33 */ 34 void fsl_spi_boot(void) 35 { 36 void (*uboot)(void) __noreturn; 37 u32 offset, code_len, copy_len = 0; 38 #ifndef CONFIG_FSL_CORENET 39 unsigned char *buf = NULL; 40 #endif 41 struct spi_flash *flash; 42 43 flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS, 44 CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE); 45 if (flash == NULL) { 46 puts("\nspi_flash_probe failed"); 47 hang(); 48 } 49 50 #ifdef CONFIG_FSL_CORENET 51 offset = CONFIG_SYS_SPI_FLASH_U_BOOT_OFFS; 52 code_len = CONFIG_SYS_SPI_FLASH_U_BOOT_SIZE; 53 #else 54 /* 55 * Load U-Boot image from SPI flash into RAM 56 */ 57 buf = malloc(flash->page_size); 58 if (buf == NULL) { 59 puts("\nmalloc failed"); 60 hang(); 61 } 62 memset(buf, 0, flash->page_size); 63 64 spi_flash_read(flash, CONFIG_CFG_DATA_SECTOR, 65 flash->page_size, (void *)buf); 66 offset = *(u32 *)(buf + ESPI_BOOT_IMAGE_ADDR); 67 /* Skip spl code */ 68 offset += CONFIG_SYS_SPI_FLASH_U_BOOT_OFFS; 69 /* Get the code size from offset 0x48 */ 70 code_len = *(u32 *)(buf + ESPI_BOOT_IMAGE_SIZE); 71 /* Skip spl code */ 72 code_len = code_len - CONFIG_SPL_MAX_SIZE; 73 #endif 74 /* copy code to DDR */ 75 printf("Loading second stage boot loader "); 76 while (copy_len <= code_len) { 77 spi_flash_read(flash, offset + copy_len, 0x2000, 78 (void *)(CONFIG_SYS_SPI_FLASH_U_BOOT_DST 79 + copy_len)); 80 copy_len = copy_len + 0x2000; 81 putc('.'); 82 } 83 84 /* 85 * Jump to U-Boot image 86 */ 87 flush_cache(CONFIG_SYS_SPI_FLASH_U_BOOT_DST, code_len); 88 uboot = (void *)CONFIG_SYS_SPI_FLASH_U_BOOT_START; 89 (*uboot)(); 90 } 91