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cpu/cortexm_common: extend flashpage API

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This commit is contained in:
Ollrogge 2021-10-19 09:30:48 +02:00
parent 72d47013dd
commit d38f6c68b5
2 changed files with 45 additions and 0 deletions
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8
cpu/cortexm_common/ldscripts/cortexm_base.ld
View File

@ -207,6 +207,10 @@ SECTIONS
_sram = ORIGIN(ram); _sram = ORIGIN(ram);
_eram = ORIGIN(ram) + LENGTH(ram); _eram = ORIGIN(ram) + LENGTH(ram);
/* Populate information about rom size */
_srom = ORIGIN(rom);
_erom = ORIGIN(rom) + LENGTH(rom);
_sbackup_data_load = LOADADDR(.backup.data); _sbackup_data_load = LOADADDR(.backup.data);
.backup.data : ALIGN(4) { .backup.data : ALIGN(4) {
_sbackup_data = .; _sbackup_data = .;
@ -228,4 +232,8 @@ SECTIONS
_sheap1 = . ; _sheap1 = . ;
_eheap1 = ORIGIN(bkup_ram) + LENGTH(bkup_ram); _eheap1 = ORIGIN(bkup_ram) + LENGTH(bkup_ram);
} > bkup_ram } > bkup_ram
.end_fw (NOLOAD) : ALIGN(4) {
_end_fw = . ;
} > rom
} }

37
cpu/cortexm_common/periph/flashpage.c Normal file
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@ -0,0 +1,37 @@
/*
* Copyright (C) 2021 Freie Universität Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_cortexm_common
* @ingroup drivers_periph_pm
* @{
* @file
* @brief common periph/flashpage functions
*
* @author Nils Ollrogge <nils.ollrogge@fu-berlin.de>
* @}
*/
#include "periph/flashpage.h"
/**
* @brief Memory markers, defined in the linker script
* @{
*/
extern uint32_t _end_fw;
extern uint32_t _erom;
unsigned flashpage_first_free(void)
{
return flashpage_page(&_end_fw) + 1;
}
unsigned flashpage_last_free(void)
{
return flashpage_page(&_erom) - 1;
}