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Allow compile-time override of detected flash size.

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On the STM32F103C8, as used in the "blue pill" boards, it has been
determined that, despite these only officially having 64KiB flash, it is
possible to actually use 128KiB of flash.

This commit allows for a preprocessor define
STM32F103_OVERRIDE_FLASH_SIZE which, when set, is used as the size of
flash in KiB instead of reading it from the FLASH_SIZE_REG.
This commit is contained in:
Jeremy Drake
2017-08-02 16:11:34 -07:00
committed by NIIBE Yutaka
parent e736227de7
commit eea011fe70
3 changed files with 14 additions and 1 deletions
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6
regnual/regnual.c
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@@ -1,7 +1,7 @@
/*
* regnual.c -- Firmware installation for STM32F103 Flash ROM
*
* Copyright (C) 2012, 2013, 2015, 2016
* Copyright (C) 2012, 2013, 2015, 2016, 2017
* Free Software Initiative of Japan
* Author: NIIBE Yutaka <gniibe@fsij.org>
*
@@ -365,7 +365,11 @@ main (int argc, char *argv[])
set_led (0);
#if defined(STM32F103_OVERRIDE_FLASH_SIZE_KB)
flash_end = FLASH_START_ADDR + STM32F103_OVERRIDE_FLASH_SIZE_KB*1024;
#else
flash_end = FLASH_START_ADDR + (*FLASH_SIZE_REG)*1024;
#endif
/*
* NVIC interrupt priority was set by Gnuk.