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https://github.com/brain-hackers/u-boot-brain
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2577015dc5
This adds a size check for SPL that can dynamically check generated SPL binaries (including devicetree) for a size limit that ensures this image plus global data, heap and stack fit in initial SRAM. Since some of these sizes are not available to make, a new host tool 'spl_size_limit' is added that dumps the resulting maximum size for an SPL binary to stdout. This tool is used in toplevel Makefile to implement the size check on SPL binaries. Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
31 lines
755 B
C
31 lines
755 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2019, Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
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*
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* This tool helps to return the size available for SPL image during build
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*/
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#include <generated/autoconf.h>
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#include <generated/generic-asm-offsets.h>
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int main(int argc, char *argv[])
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{
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int spl_size_limit = 0;
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#ifdef CONFIG_SPL_SIZE_LIMIT
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spl_size_limit = CONFIG_SPL_SIZE_LIMIT;
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#ifdef CONFIG_SPL_SIZE_LIMIT_SUBTRACT_GD
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spl_size_limit -= GENERATED_GBL_DATA_SIZE;
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#endif
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#ifdef CONFIG_SPL_SIZE_LIMIT_SUBTRACT_MALLOC
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spl_size_limit -= CONFIG_SPL_SYS_MALLOC_F_LEN;
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#endif
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#ifdef CONFIG_SPL_SIZE_LIMIT_PROVIDE_STACK
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spl_size_limit -= CONFIG_SPL_SIZE_LIMIT_PROVIDE_STACK;
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#endif
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#endif
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printf("%d", spl_size_limit);
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return 0;
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}
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