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https://github.com/brain-hackers/u-boot-brain
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![Peng Fan](/assets/img/avatar_default.png)
i.MX8 only support AHAB secure boot with Container format image, we could not use FIT to support secure boot, so introduce container support to let SPL could load container images. Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Cc: Tien Fong Chee <tien.fong.chee@intel.com> Cc: York Sun <york.sun@nxp.com> Cc: Marek Vasut <marex@denx.de> Cc: Alex Kiernan <alex.kiernan@gmail.com> Cc: Simon Glass <sjg@chromium.org> Cc: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Cc: Kever Yang <kever.yang@rock-chips.com> Cc: Heiko Schocher <hs@denx.de> Signed-off-by: Peng Fan <peng.fan@nxp.com>
169 lines
4.2 KiB
C
169 lines
4.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2011 OMICRON electronics GmbH
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*
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* based on drivers/mtd/nand/raw/nand_spl_load.c
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*
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* Copyright (C) 2011
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* Heiko Schocher, DENX Software Engineering, hs@denx.de.
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*/
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#include <common.h>
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#include <spi.h>
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#include <spi_flash.h>
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#include <errno.h>
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#include <spl.h>
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DECLARE_GLOBAL_DATA_PTR;
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#ifdef CONFIG_SPL_OS_BOOT
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/*
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* Load the kernel, check for a valid header we can parse, and if found load
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* the kernel and then device tree.
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*/
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static int spi_load_image_os(struct spl_image_info *spl_image,
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struct spi_flash *flash,
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struct image_header *header)
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{
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int err;
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/* Read for a header, parse or error out. */
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spi_flash_read(flash, CONFIG_SYS_SPI_KERNEL_OFFS, sizeof(*header),
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(void *)header);
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if (image_get_magic(header) != IH_MAGIC)
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return -1;
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err = spl_parse_image_header(spl_image, header);
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if (err)
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return err;
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spi_flash_read(flash, CONFIG_SYS_SPI_KERNEL_OFFS,
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spl_image->size, (void *)spl_image->load_addr);
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/* Read device tree. */
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spi_flash_read(flash, CONFIG_SYS_SPI_ARGS_OFFS,
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CONFIG_SYS_SPI_ARGS_SIZE,
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(void *)CONFIG_SYS_SPL_ARGS_ADDR);
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return 0;
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}
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#endif
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static ulong spl_spi_fit_read(struct spl_load_info *load, ulong sector,
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ulong count, void *buf)
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{
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struct spi_flash *flash = load->dev;
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ulong ret;
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ret = spi_flash_read(flash, sector, count, buf);
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if (!ret)
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return count;
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else
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return 0;
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}
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unsigned int __weak spl_spi_get_uboot_offs(struct spi_flash *flash)
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{
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return CONFIG_SYS_SPI_U_BOOT_OFFS;
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}
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/*
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* The main entry for SPI booting. It's necessary that SDRAM is already
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* configured and available since this code loads the main U-Boot image
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* from SPI into SDRAM and starts it from there.
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*/
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static int spl_spi_load_image(struct spl_image_info *spl_image,
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struct spl_boot_device *bootdev)
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{
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int err = 0;
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unsigned int payload_offs;
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struct spi_flash *flash;
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struct image_header *header;
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/*
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* Load U-Boot image from SPI flash into RAM
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* In DM mode: defaults speed and mode will be
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* taken from DT when available
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*/
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flash = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
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CONFIG_SF_DEFAULT_CS,
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CONFIG_SF_DEFAULT_SPEED,
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CONFIG_SF_DEFAULT_MODE);
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if (!flash) {
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puts("SPI probe failed.\n");
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return -ENODEV;
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}
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payload_offs = spl_spi_get_uboot_offs(flash);
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header = spl_get_load_buffer(-sizeof(*header), sizeof(*header));
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#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
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payload_offs = fdtdec_get_config_int(gd->fdt_blob,
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"u-boot,spl-payload-offset",
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payload_offs);
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#endif
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#ifdef CONFIG_SPL_OS_BOOT
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if (spl_start_uboot() || spi_load_image_os(spl_image, flash, header))
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#endif
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{
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/* Load u-boot, mkimage header is 64 bytes. */
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err = spi_flash_read(flash, payload_offs, sizeof(*header),
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(void *)header);
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if (err) {
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debug("%s: Failed to read from SPI flash (err=%d)\n",
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__func__, err);
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return err;
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}
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if (IS_ENABLED(CONFIG_SPL_LOAD_FIT_FULL) &&
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image_get_magic(header) == FDT_MAGIC) {
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err = spi_flash_read(flash, payload_offs,
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roundup(fdt_totalsize(header), 4),
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(void *)CONFIG_SYS_LOAD_ADDR);
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if (err)
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return err;
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err = spl_parse_image_header(spl_image,
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(struct image_header *)CONFIG_SYS_LOAD_ADDR);
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} else if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
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image_get_magic(header) == FDT_MAGIC) {
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struct spl_load_info load;
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debug("Found FIT\n");
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load.dev = flash;
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load.priv = NULL;
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load.filename = NULL;
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load.bl_len = 1;
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load.read = spl_spi_fit_read;
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err = spl_load_simple_fit(spl_image, &load,
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payload_offs,
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header);
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} else if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER)) {
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struct spl_load_info load;
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load.dev = flash;
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load.priv = NULL;
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load.filename = NULL;
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load.bl_len = 1;
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load.read = spl_spi_fit_read;
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err = spl_load_imx_container(spl_image, &load,
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payload_offs);
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} else {
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err = spl_parse_image_header(spl_image, header);
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if (err)
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return err;
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err = spi_flash_read(flash, payload_offs,
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spl_image->size,
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(void *)spl_image->load_addr);
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}
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}
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return err;
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}
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/* Use priorty 1 so that boards can override this */
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SPL_LOAD_IMAGE_METHOD("SPI", 1, BOOT_DEVICE_SPI, spl_spi_load_image);
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