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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016 Mark Shannon
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef __MICROPY_INCLUDED_MEMORY_H__
#define __MICROPY_INCLUDED_MEMORY_H__
#include "microbit/filesystem.h"
extern uint32_t __data_end__;
extern uint32_t __data_start__;
extern uint32_t __etext;
static inline char *rounddown(char *addr, uint32_t align) {
return (char *)(((uint32_t)addr)&(-align));
}
static inline char *roundup(char *addr, uint32_t align) {
return (char *)((((uint32_t)addr)+align-1)&(-align));
}
/** The end of the code area in flash ROM (text plus read-only copy of data area) */
static inline char *microbit_end_of_code() {
return (char *)(&__etext + (&__data_end__ - &__data_start__));
}
static inline char *microbit_end_of_rom() {
return (char *)0x40000;
}
static inline char *microbit_mp_appended_script() {
return (char *)0x3e000;
}
static inline void *microbit_compass_calibration_page(void) {
if (microbit_mp_appended_script()[0] == 'M') {
return microbit_mp_appended_script() - persistent_page_size();
} else {
return microbit_end_of_rom() - persistent_page_size();
}
}
#endif // __MICROPY_INCLUDED_MEMORY_H__
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