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https://github.com/brain-hackers/u-boot-brain
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e6a0586277
TPL builds today don't need to call into firmware or set up the MMU (if this changes, it should be controlled through a config option whether to include this or not), but include the needed support code for this anyway. By moving these unused low-level functions into seperate function-sections, the linker can garbage-collect the unused sections. Note that (if DM support is enabled), there will be a call to the cache-flushing code from alloc_priv(...) in drivers/core/device.c. This then add 52 bytes of binary size (an increase from 20589 to 20641 bytes) compared to completely removing this code. Even for a feature-rich TPL (including DM support as for the RK3368), this equates to a size difference of significantly more than 10% in TPL binary size. Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Reviewed-by: Simon Glass <sjg@chromium.org>
36 lines
541 B
ArmAsm
36 lines
541 B
ArmAsm
/*
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* (C) Copyright 2013
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* David Feng <fenghua@phytium.com.cn>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <asm-offsets.h>
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#include <config.h>
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#include <linux/linkage.h>
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#include <asm/macro.h>
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/*
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* void __asm_invalidate_tlb_all(void)
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*
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* invalidate all tlb entries.
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*/
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.pushsection .text.__asm_invalidate_tlb_all, "ax"
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ENTRY(__asm_invalidate_tlb_all)
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switch_el x9, 3f, 2f, 1f
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3: tlbi alle3
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dsb sy
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isb
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b 0f
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2: tlbi alle2
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dsb sy
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isb
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b 0f
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1: tlbi vmalle1
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dsb sy
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isb
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0:
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ret
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ENDPROC(__asm_invalidate_tlb_all)
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.popsection
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