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
);