mirror of
https://github.com/AsahiLinux/u-boot
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1e5b116ed2
Create a basic U-Boot environment that allows the automatic loading of a Linux Kernel located at /boot/Image and an associated device tree blob located at /boot/k3-am654-base-board.dtb from the secondary partition of an ext4-formatted SD card on the AM654x EVM. Furthermore the boot.scr and uEnv.txt detection and loading schemes are supported in a manner already known from other TI platforms. Note that this is intended to be a starting point to enable initial board use and will most certainly get extended and refactored as different boot media become available. Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Andreas Dannenberg <dannenberg@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
69 lines
2.1 KiB
C
69 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Configuration header file for K3 AM654 EVM
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*
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* Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/
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* Lokesh Vutla <lokeshvutla@ti.com>
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*/
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#ifndef __CONFIG_AM654_EVM_H
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#define __CONFIG_AM654_EVM_H
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#include <linux/sizes.h>
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#include <config_distro_bootcmd.h>
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#include <environment/ti/mmc.h>
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#define CONFIG_ENV_SIZE (128 << 10)
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/* DDR Configuration */
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#define CONFIG_SYS_SDRAM_BASE1 0x880000000
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/* SPL Loader Configuration */
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#ifdef CONFIG_TARGET_AM654_A53_EVM
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#define CONFIG_SPL_TEXT_BASE 0x80080000
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#endif
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#define CONFIG_SKIP_LOWLEVEL_INIT
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#define CONFIG_SPL_MAX_SIZE CONFIG_SYS_K3_MAX_DOWNLODABLE_IMAGE_SIZE
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#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SPL_TEXT_BASE + \
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CONFIG_SYS_K3_NON_SECURE_MSRAM_SIZE - 4)
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/* U-Boot general configuration */
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#define EXTRA_ENV_AM65X_BOARD_SETTINGS \
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"findfdt=" \
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"if test $board_name = am65x; then " \
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"setenv name_fdt k3-am654-base-board.dtb; " \
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"else if test $name_fdt = undefined; then " \
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"echo WARNING: Could not determine device tree to use;"\
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"fi; fi; " \
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"setenv fdtfile ${name_fdt}\0" \
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"loadaddr=0x80080000\0" \
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"fdtaddr=0x82000000\0" \
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"name_kern=Image\0" \
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"console=ttyS2,115200n8\0" \
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"args_all=setenv optargs earlycon=ns16550a,mmio32,0x02800000\0" \
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"run_kern=booti ${loadaddr} ${rd_spec} ${fdtaddr}\0"
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/* U-Boot MMC-specific configuration */
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#define EXTRA_ENV_AM65X_BOARD_SETTINGS_MMC \
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"boot=mmc\0" \
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"mmcdev=1\0" \
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"bootpart=1:2\0" \
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"bootdir=/boot\0" \
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"rd_spec=-\0" \
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"init_mmc=run args_all args_mmc\0" \
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"get_fdt_mmc=load mmc ${bootpart} ${fdtaddr} ${bootdir}/${name_fdt}\0" \
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"get_kern_mmc=load mmc ${bootpart} ${loadaddr} " \
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"${bootdir}/${name_kern}\0"
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/* Incorporate settings into the U-Boot environment */
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#define CONFIG_EXTRA_ENV_SETTINGS \
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DEFAULT_MMC_TI_ARGS \
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EXTRA_ENV_AM65X_BOARD_SETTINGS \
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EXTRA_ENV_AM65X_BOARD_SETTINGS_MMC
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/* Now for the remaining common defines */
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#include <configs/ti_armv7_common.h>
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#endif /* __CONFIG_AM654_EVM_H */
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