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03de305ec4
As part of bringing the master branch back in to next, we need to allow for all of these changes to exist here. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
110 lines
2.6 KiB
C
110 lines
2.6 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 <config.h>
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#include <image.h>
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#include <imx_container.h>
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#include <log.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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#include <spl_load.h>
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#include <asm/global_data.h>
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#include <asm/io.h>
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#include <dm/ofnode.h>
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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->priv;
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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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u32 __weak spl_spi_boot_bus(void)
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{
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return CONFIG_SF_DEFAULT_BUS;
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}
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u32 __weak spl_spi_boot_cs(void)
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{
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return CONFIG_SF_DEFAULT_CS;
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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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unsigned int sf_bus = spl_spi_boot_bus();
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unsigned int sf_cs = spl_spi_boot_cs();
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struct spl_load_info load;
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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(sf_bus, sf_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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load.priv = flash;
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spl_set_bl_len(&load, 1);
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load.read = spl_spi_fit_read;
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#if CONFIG_IS_ENABLED(OS_BOOT)
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if (spl_start_uboot()) {
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int err = spl_load(spl_image, bootdev, &load, 0,
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CFG_SYS_SPI_KERNEL_OFFS);
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if (!err)
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/* Read device tree. */
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return spi_flash_read(flash, CFG_SYS_SPI_ARGS_OFFS,
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CFG_SYS_SPI_ARGS_SIZE,
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(void *)CONFIG_SPL_PAYLOAD_ARGS_ADDR);
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}
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#endif
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payload_offs = spl_spi_get_uboot_offs(flash);
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if (CONFIG_IS_ENABLED(OF_REAL)) {
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payload_offs = ofnode_conf_read_int("u-boot,spl-payload-offset",
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payload_offs);
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}
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err = spl_load(spl_image, bootdev, &load, 0, payload_offs);
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if (IS_ENABLED(CONFIG_SPI_FLASH_SOFT_RESET))
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err = spi_nor_remove(flash);
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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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