75 lines
2.5 KiB
C
75 lines
2.5 KiB
C
/****************************************************************************
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* arch/xtensa/src/common/xtensa_attr.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __ARCH_XTENSA_SRC_COMMON_XTENSA_ATTR_H
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#define __ARCH_XTENSA_SRC_COMMON_XTENSA_ATTR_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define ROMFN_ATTR
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/* Normally, the linker script will put all code and rodata in flash,
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* and all variables in shared RAM. These macros can be used to redirect
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* particular functions/variables to other memory regions.
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*/
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/* Forces code into IRAM instead of flash */
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#define IRAM_ATTR locate_data(".iram1")
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/* Forces data into DRAM instead of flash */
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#define DRAM_ATTR locate_data(".dram1")
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/* Forces code into RTC fast memory */
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#define RTC_IRAM_ATTR locate_data(".rtc.text")
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/* Forces data into RTC slow memory
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* Any variable marked with this attribute will keep its value
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* during a deep sleep / wake cycle.
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*/
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#define RTC_DATA_ATTR locate_data(".rtc.data")
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/* Forces read-only data into RTC slow memory
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* Makes constant data available to RTC wake stubs.
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*/
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#define RTC_RODATA_ATTR locate_data(".rtc.rodata")
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/* Allow bss variables into external memory. */
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#ifdef CONFIG_XTENSA_EXTMEM_BSS
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# define EXT_RAM_ATTR locate_data(".extmem.bss")
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#else
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# define EXT_RAM_ATTR
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#endif
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#endif /* __ARCH_XTENSA_SRC_COMMON_XTENSA_ATTR_H */
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