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.
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, sizeof(*header),
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 unsigned int __weak spl_spi_get_uboot_offs(struct spi_flash *flash)
69 return CONFIG_SYS_SPI_U_BOOT_OFFS;
73 * The main entry for SPI booting. It's necessary that SDRAM is already
74 * configured and available since this code loads the main U-Boot image
75 * from SPI into SDRAM and starts it from there.
77 static int spl_spi_load_image(struct spl_image_info *spl_image,
78 struct spl_boot_device *bootdev)
81 unsigned int payload_offs;
82 struct spi_flash *flash;
83 struct image_header *header;
86 * Load U-Boot image from SPI flash into RAM
87 * In DM mode: defaults speed and mode will be
88 * taken from DT when available
91 flash = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
93 CONFIG_SF_DEFAULT_SPEED,
94 CONFIG_SF_DEFAULT_MODE);
96 puts("SPI probe failed.\n");
100 payload_offs = spl_spi_get_uboot_offs(flash);
102 header = spl_get_load_buffer(-sizeof(*header), sizeof(*header));
104 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
105 payload_offs = fdtdec_get_config_int(gd->fdt_blob,
106 "u-boot,spl-payload-offset",
110 #ifdef CONFIG_SPL_OS_BOOT
111 if (spl_start_uboot() || spi_load_image_os(spl_image, flash, header))
114 /* Load u-boot, mkimage header is 64 bytes. */
115 err = spi_flash_read(flash, payload_offs, sizeof(*header),
118 debug("%s: Failed to read from SPI flash (err=%d)\n",
123 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT_FULL) &&
124 image_get_magic(header) == FDT_MAGIC) {
125 err = spi_flash_read(flash, payload_offs,
126 roundup(fdt_totalsize(header), 4),
127 (void *)CONFIG_SYS_LOAD_ADDR);
130 err = spl_parse_image_header(spl_image,
131 (struct image_header *)CONFIG_SYS_LOAD_ADDR);
132 } else if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
133 image_get_magic(header) == FDT_MAGIC) {
134 struct spl_load_info load;
136 debug("Found FIT\n");
139 load.filename = NULL;
141 load.read = spl_spi_fit_read;
142 err = spl_load_simple_fit(spl_image, &load,
145 } else if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER)) {
146 struct spl_load_info load;
150 load.filename = NULL;
152 load.read = spl_spi_fit_read;
154 err = spl_load_imx_container(spl_image, &load,
157 err = spl_parse_image_header(spl_image, header);
160 err = spi_flash_read(flash, payload_offs,
162 (void *)spl_image->load_addr);
168 /* Use priorty 1 so that boards can override this */
169 SPL_LOAD_IMAGE_METHOD("SPI", 1, BOOT_DEVICE_SPI, spl_spi_load_image);