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https://github.com/brain-hackers/u-boot-brain
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8f78e52794
This enables configs necessary for using SPI. The environment is saved to the very end of SPI flash. This is unlikely to be overwritten unless the entire flash is reprogrammed. This also supplies a default bootcommand. It loads an image and device tree from the first partition of the MMC. This is a minimal/least effort bootcmd, so suggestions (especially in the form of patches) are welcome. I didn't set up distro boot because I think it is unlikely that any general-purpose linux distros will ever be ported to this board. Signed-off-by: Sean Anderson <seanga2@gmail.com> Tested-by: Chrstopher Obbard <obbardc@gmail.com> Reviewed-by: Rick Chen <rick@andestech.com>
37 lines
1.0 KiB
C
37 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2019-20 Sean Anderson <seanga2@gmail.com>
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*/
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#ifndef CONFIGS_SIPEED_MAIX_H
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#define CONFIGS_SIPEED_MAIX_H
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#include <linux/sizes.h>
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#define CONFIG_SYS_LOAD_ADDR 0x80000000
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/* Start just below the second bank so we don't clobber it during reloc */
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#define CONFIG_SYS_INIT_SP_ADDR 0x803FFFFF
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#define CONFIG_SYS_MALLOC_LEN SZ_128K
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#define CONFIG_SYS_CACHELINE_SIZE 64
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#define CONFIG_SYS_SDRAM_BASE 0x80000000
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/* Don't relocate into AI ram since it isn't set up yet */
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#define CONFIG_SYS_SDRAM_SIZE (SZ_4M + SZ_2M)
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/* For early init */
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#define K210_SYSCTL_BASE 0x50440000
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#ifndef CONFIG_EXTRA_ENV_SETTINGS
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#define CONFIG_EXTRA_ENV_SETTINGS \
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"loadaddr=0x80060000\0" \
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"fdt_addr_r=0x80400000\0" \
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"scriptaddr=0x80020000\0" \
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"kernel_addr_r=0x80060000\0" \
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"fdtfile=kendryte/" CONFIG_DEFAULT_DEVICE_TREE ".dtb\0" \
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"k210_bootcmd=load mmc 0:1 $loadaddr /uImage && " \
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"load mmc 0:1 $fdt_addr_r /k210.dtb && " \
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"bootm $loadaddr - $fdt_addr_r\0"
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#endif
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#endif /* CONFIGS_SIPEED_MAIX_H */
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