1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2011 OMICRON electronics GmbH
5 * based on drivers/mtd/nand/raw/nand_spl_load.c
8 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
13 #include <spi_flash.h>
17 DECLARE_GLOBAL_DATA_PTR;
19 #ifdef CONFIG_SPL_OS_BOOT
21 * Load the kernel, check for a valid header we can parse, and if found load
22 * the kernel and then device tree.
24 static int spi_load_image_os(struct spl_image_info *spl_image,
25 struct spi_flash *flash,
26 struct image_header *header)
30 /* Read for a header, parse or error out. */
31 spi_flash_read(flash, CONFIG_SYS_SPI_KERNEL_OFFS, 0x40,
34 if (image_get_magic(header) != IH_MAGIC)
37 err = spl_parse_image_header(spl_image, header);
41 spi_flash_read(flash, CONFIG_SYS_SPI_KERNEL_OFFS,
42 spl_image->size, (void *)spl_image->load_addr);
44 /* Read device tree. */
45 spi_flash_read(flash, CONFIG_SYS_SPI_ARGS_OFFS,
46 CONFIG_SYS_SPI_ARGS_SIZE,
47 (void *)CONFIG_SYS_SPL_ARGS_ADDR);
53 static ulong spl_spi_fit_read(struct spl_load_info *load, ulong sector,
54 ulong count, void *buf)
56 struct spi_flash *flash = load->dev;
59 ret = spi_flash_read(flash, sector, count, buf);
66 * The main entry for SPI booting. It's necessary that SDRAM is already
67 * configured and available since this code loads the main U-Boot image
68 * from SPI into SDRAM and starts it from there.
70 static int spl_spi_load_image(struct spl_image_info *spl_image,
71 struct spl_boot_device *bootdev)
74 unsigned payload_offs = CONFIG_SYS_SPI_U_BOOT_OFFS;
75 struct spi_flash *flash;
76 struct image_header *header;
79 * Load U-Boot image from SPI flash into RAM
82 flash = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
84 CONFIG_SF_DEFAULT_SPEED,
85 CONFIG_SF_DEFAULT_MODE);
87 puts("SPI probe failed.\n");
91 /* use CONFIG_SYS_TEXT_BASE as temporary storage area */
92 header = (struct image_header *)(CONFIG_SYS_TEXT_BASE);
94 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
95 payload_offs = fdtdec_get_config_int(gd->fdt_blob,
96 "u-boot,spl-payload-offset",
100 #ifdef CONFIG_SPL_OS_BOOT
101 if (spl_start_uboot() || spi_load_image_os(spl_image, flash, header))
104 /* Load u-boot, mkimage header is 64 bytes. */
105 err = spi_flash_read(flash, payload_offs, 0x40,
108 debug("%s: Failed to read from SPI flash (err=%d)\n",
113 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT_FULL) &&
114 image_get_magic(header) == FDT_MAGIC) {
115 err = spi_flash_read(flash, payload_offs,
116 roundup(fdt_totalsize(header), 4),
117 (void *)CONFIG_SYS_LOAD_ADDR);
120 err = spl_parse_image_header(spl_image,
121 (struct image_header *)CONFIG_SYS_LOAD_ADDR);
122 } else if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
123 image_get_magic(header) == FDT_MAGIC) {
124 struct spl_load_info load;
126 debug("Found FIT\n");
129 load.filename = NULL;
131 load.read = spl_spi_fit_read;
132 err = spl_load_simple_fit(spl_image, &load,
136 err = spl_parse_image_header(spl_image, header);
139 err = spi_flash_read(flash, payload_offs,
141 (void *)spl_image->load_addr);
147 /* Use priorty 1 so that boards can override this */
148 SPL_LOAD_IMAGE_METHOD("SPI", 1, BOOT_DEVICE_SPI, spl_spi_load_image);