2 * Copyright (C) 2011 OMICRON electronics GmbH
4 * based on drivers/mtd/nand/nand_spl_load.c
7 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
9 * SPDX-License-Identifier: GPL-2.0+
14 #include <spi_flash.h>
18 DECLARE_GLOBAL_DATA_PTR;
20 #ifdef CONFIG_SPL_OS_BOOT
22 * Load the kernel, check for a valid header we can parse, and if found load
23 * the kernel and then device tree.
25 static int spi_load_image_os(struct spl_image_info *spl_image,
26 struct spi_flash *flash,
27 struct image_header *header)
31 /* Read for a header, parse or error out. */
32 spi_flash_read(flash, CONFIG_SYS_SPI_KERNEL_OFFS, 0x40,
35 if (image_get_magic(header) != IH_MAGIC)
38 err = spl_parse_image_header(spl_image, header);
42 spi_flash_read(flash, CONFIG_SYS_SPI_KERNEL_OFFS,
43 spl_image->size, (void *)spl_image->load_addr);
45 /* Read device tree. */
46 spi_flash_read(flash, CONFIG_SYS_SPI_ARGS_OFFS,
47 CONFIG_SYS_SPI_ARGS_SIZE,
48 (void *)CONFIG_SYS_SPL_ARGS_ADDR);
54 static ulong spl_spi_fit_read(struct spl_load_info *load, ulong sector,
55 ulong count, void *buf)
57 struct spi_flash *flash = load->dev;
60 ret = spi_flash_read(flash, sector, count, buf);
67 * The main entry for SPI booting. It's necessary that SDRAM is already
68 * configured and available since this code loads the main U-Boot image
69 * from SPI into SDRAM and starts it from there.
71 static int spl_spi_load_image(struct spl_image_info *spl_image,
72 struct spl_boot_device *bootdev)
75 unsigned payload_offs = CONFIG_SYS_SPI_U_BOOT_OFFS;
76 struct spi_flash *flash;
77 struct image_header *header;
80 * Load U-Boot image from SPI flash into RAM
83 flash = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
85 CONFIG_SF_DEFAULT_SPEED,
86 CONFIG_SF_DEFAULT_MODE);
88 puts("SPI probe failed.\n");
92 /* use CONFIG_SYS_TEXT_BASE as temporary storage area */
93 header = (struct image_header *)(CONFIG_SYS_TEXT_BASE);
95 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
96 payload_offs = fdtdec_get_config_int(gd->fdt_blob,
97 "u-boot,spl-payload-offset",
101 #ifdef CONFIG_SPL_OS_BOOT
102 if (spl_start_uboot() || spi_load_image_os(spl_image, flash, header))
105 /* Load u-boot, mkimage header is 64 bytes. */
106 err = spi_flash_read(flash, payload_offs, 0x40,
109 debug("%s: Failed to read from SPI flash (err=%d)\n",
114 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
115 image_get_magic(header) == FDT_MAGIC) {
116 struct spl_load_info load;
118 debug("Found FIT\n");
121 load.filename = NULL;
123 load.read = spl_spi_fit_read;
124 err = spl_load_simple_fit(spl_image, &load,
128 err = spl_parse_image_header(spl_image, header);
131 err = spi_flash_read(flash, payload_offs,
133 (void *)spl_image->load_addr);
139 /* Use priorty 1 so that boards can override this */
140 SPL_LOAD_IMAGE_METHOD("SPI", 1, BOOT_DEVICE_SPI, spl_spi_load_image);