arch/arm/include/asm/tcm.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *
   4  * Copyright (C) 2008-2009 ST-Ericsson AB
   5  *
   6  * Author: Rickard Andersson <rickard.andersson@stericsson.com>
   7  * Author: Linus Walleij <linus.walleij@stericsson.com>
   8  */
   9 #ifndef __ASMARM_TCM_H
  10 #define __ASMARM_TCM_H
  11
  12 #ifdef CONFIG_HAVE_TCM
  13
  14 #include <linux/compiler.h>
  15
  16 /* Tag variables with this */
  17 #define __tcmdata __section(".tcm.data")
  18 /* Tag constants with this */
  19 #define __tcmconst __section(".tcm.rodata")
  20 /* Tag functions inside TCM called from outside TCM with this */
  21 #define __tcmfunc __attribute__((long_call)) __section(".tcm.text") noinline
  22 /* Tag function inside TCM called from inside TCM  with this */
  23 #define __tcmlocalfunc __section(".tcm.text")
  24
  25 void *tcm_alloc(size_t len);
  26 void tcm_free(void *addr, size_t len);
  27 bool tcm_dtcm_present(void);
  28 bool tcm_itcm_present(void);
  29
  30 void __init tcm_init(void);
  31 #else
  32 /* No TCM support, just blank inlines to be optimized out */
  33 static inline void tcm_init(void)
  34 {
  35 }
  36 #endif
  37 #endif