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, sizeof(*header),
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 unsigned int __weak spl_spi_get_uboot_offs(struct spi_flash *flash)
68 return CONFIG_SYS_SPI_U_BOOT_OFFS;
72 * The main entry for SPI booting. It's necessary that SDRAM is already
73 * configured and available since this code loads the main U-Boot image
74 * from SPI into SDRAM and starts it from there.
76 static int spl_spi_load_image(struct spl_image_info *spl_image,
77 struct spl_boot_device *bootdev)
80 unsigned int payload_offs;
81 struct spi_flash *flash;
82 struct image_header *header;
85 * Load U-Boot image from SPI flash into RAM
86 * In DM mode: defaults speed and mode will be
87 * taken from DT when available
90 flash = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
92 CONFIG_SF_DEFAULT_SPEED,
93 CONFIG_SF_DEFAULT_MODE);
95 puts("SPI probe failed.\n");
99 payload_offs = spl_spi_get_uboot_offs(flash);
101 header = spl_get_load_buffer(-sizeof(*header), sizeof(*header));
103 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
104 payload_offs = fdtdec_get_config_int(gd->fdt_blob,
105 "u-boot,spl-payload-offset",
109 #ifdef CONFIG_SPL_OS_BOOT
110 if (spl_start_uboot() || spi_load_image_os(spl_image, flash, header))
113 /* Load u-boot, mkimage header is 64 bytes. */
114 err = spi_flash_read(flash, payload_offs, sizeof(*header),
117 debug("%s: Failed to read from SPI flash (err=%d)\n",
122 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT_FULL) &&
123 image_get_magic(header) == FDT_MAGIC) {
124 err = spi_flash_read(flash, payload_offs,
125 roundup(fdt_totalsize(header), 4),
126 (void *)CONFIG_SYS_LOAD_ADDR);
129 err = spl_parse_image_header(spl_image,
130 (struct image_header *)CONFIG_SYS_LOAD_ADDR);
131 } else if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
132 image_get_magic(header) == FDT_MAGIC) {
133 struct spl_load_info load;
135 debug("Found FIT\n");
138 load.filename = NULL;
140 load.read = spl_spi_fit_read;
141 err = spl_load_simple_fit(spl_image, &load,
144 } else if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER)) {
145 struct spl_load_info load;
149 load.filename = NULL;
151 load.read = spl_spi_fit_read;
153 err = spl_load_imx_container(spl_image, &load,
156 err = spl_parse_image_header(spl_image, header);
159 err = spi_flash_read(flash, payload_offs,
161 (void *)spl_image->load_addr);
167 /* Use priorty 1 so that boards can override this */
168 SPL_LOAD_IMAGE_METHOD("SPI", 1, BOOT_DEVICE_SPI, spl_spi_load_image);