201043f227
By allowing code to detect whether DTCM or ITCM is present, code paths involving TCM can be avoided when running on platforms that lack it. This is good for creating single kernels across several archs, if some of them utilize TCM but others don't. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
34 lines
937 B
C
34 lines
937 B
C
/*
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*
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* Copyright (C) 2008-2009 ST-Ericsson AB
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* License terms: GNU General Public License (GPL) version 2
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*
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* Author: Rickard Andersson <rickard.andersson@stericsson.com>
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* Author: Linus Walleij <linus.walleij@stericsson.com>
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*
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*/
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#ifndef __ASMARM_TCM_H
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#define __ASMARM_TCM_H
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#ifndef CONFIG_HAVE_TCM
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#error "You should not be including tcm.h unless you have a TCM!"
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#endif
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#include <linux/compiler.h>
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/* Tag variables with this */
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#define __tcmdata __section(.tcm.data)
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/* Tag constants with this */
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#define __tcmconst __section(.tcm.rodata)
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/* Tag functions inside TCM called from outside TCM with this */
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#define __tcmfunc __attribute__((long_call)) __section(.tcm.text) noinline
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/* Tag function inside TCM called from inside TCM with this */
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#define __tcmlocalfunc __section(.tcm.text)
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void *tcm_alloc(size_t len);
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void tcm_free(void *addr, size_t len);
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bool tcm_dtcm_present(void);
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bool tcm_itcm_present(void);
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#endif
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