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https://github.com/brain-hackers/u-boot-brain
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03facc7271
The TI AM654x EVM base board and the associated daughtercards have on-
board I2C-based EEPROMs containing board configuration data. Use the
board detection infrastructure introduced earlier to do the following:
1) Parse the AM654x EVM base board EEPROM and populate items like board
name and MAC addresses into the TI common EEPROM data structure
residing in SRAM scratch space
2) Check for presence of daughter card(s) by probing the associated
presence signals via an I2C-based GPIO expander. Then, if such a
card is found, parse the data such as additional Ethernet MAC
addresses from its on-board EEPROM and populate into U-Boot
accordingly
3) Dynamically create an U-Boot ENV variable called overlay_files
containing a list of daugherboard-specific DTB overlays based on
daughercards found.
This patch adds support for the AM654x base board ("AM6-COMPROCEVM")
as well as for the IDK ("AM6-IDKAPPEVM"), OLDI LCD ("OLDI-LCD1EVM")
PCIe/USB3.0 ("SER-PCIEUSBEVM"), 2 Lane PCIe/USB2.0 ("SER-PCIE2LEVM"),
and general purpuse ("AM6-GPAPPEVM") daughtercards.
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
113 lines
3.5 KiB
C
113 lines
3.5 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_SYS_INIT_SP_ADDR (CONFIG_SPL_TEXT_BASE + \
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CONFIG_SYS_K3_NON_SECURE_MSRAM_SIZE)
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#else
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/*
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* Maximum size in memory allocated to the SPL BSS. Keep it as tight as
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* possible (to allow the build to go through), as this directly affects
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* our memory footprint. The less we use for BSS the more we have available
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* for everything else.
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*/
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#define CONFIG_SPL_BSS_MAX_SIZE 0x5000
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/*
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* Link BSS to be within SPL in a dedicated region located near the top of
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* the MCU SRAM, this way making it available also before relocation. Note
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* that we are not using the actual top of the MCU SRAM as there is a memory
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* location filled in by the boot ROM that we want to read out without any
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* interference from the C context.
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*/
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#define CONFIG_SPL_BSS_START_ADDR (CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX -\
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CONFIG_SPL_BSS_MAX_SIZE)
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/* Set the stack right below the SPL BSS section */
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#define CONFIG_SYS_INIT_SP_ADDR CONFIG_SPL_BSS_START_ADDR
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/* Configure R5 SPL post-relocation malloc pool in DDR */
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#define CONFIG_SYS_SPL_MALLOC_START 0x84000000
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#define CONFIG_SYS_SPL_MALLOC_SIZE SZ_16M
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#endif
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#ifdef CONFIG_SYS_K3_SPL_ATF
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#define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME "tispl.bin"
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#endif
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#ifndef CONFIG_CPU_V7R
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#define CONFIG_SKIP_LOWLEVEL_INIT
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#endif
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#define CONFIG_SPL_MAX_SIZE CONFIG_SYS_K3_MAX_DOWNLODABLE_IMAGE_SIZE
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#define CONFIG_SYS_BOOTM_LEN SZ_64M
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#define PARTS_DEFAULT \
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/* Linux partitions */ \
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"name=rootfs,start=0,size=-,uuid=${uuid_gpt_rootfs}\0"
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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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"setenv name_fdt k3-am654-base-board.dtb;" \
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"setenv fdtfile ${name_fdt};" \
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"setenv overlay_files ${name_overlays}\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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"partitions=" PARTS_DEFAULT
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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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/* MMC ENV related defines */
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#ifdef CONFIG_ENV_IS_IN_MMC
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#define CONFIG_SYS_MMC_ENV_DEV 0
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#define CONFIG_SYS_MMC_ENV_PART 1
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#define CONFIG_ENV_SIZE (128 << 10)
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#define CONFIG_ENV_OFFSET 0x680000
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#define CONFIG_ENV_OFFSET_REDUND (CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)
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#define CONFIG_SYS_REDUNDAND_ENVIRONMENT
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#endif
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#define CONFIG_SUPPORT_EMMC_BOOT
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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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