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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3372 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2011-03-12 17:49:47 +00:00
parent 04d496adb1
commit 2df245d668
1 changed files with 29 additions and 1 deletions
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30
arch/arm/src/stm32/stm32_start.c
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@ -2,7 +2,7 @@
* arch/arm/src/stm32/stm32_start.c
* arch/arm/src/chip/stm32_start.c
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Copyright (C) 2009, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@ -51,6 +51,8 @@
#include "up_internal.h"
#include "stm32_internal.h"
#include "stm32_gpio.h"
/****************************************************************************
* Private Definitions
@ -67,6 +69,31 @@
/****************************************************************************
* Private Functions
****************************************************************************/
void stm32_jtag_enable(void)
{
#ifdef CONFIG_STM32_JTAG_FULL_ENABLE
#elif CONFIG_STM32_JTAG_NOJNTRST_ENABLE
uint32_t val = getreg32(STM32_AFIO_MAPR);
val &= 0x00FFFFFF; // clear undefined readings ...
val |= AFIO_MAPR_SWJ; // enabled but without JNTRST
putreg32(val, STM32_AFIO_MAPR);
#elif CONFIG_STM32_JTAG_SW_ENABLE
uint32_t val = getreg32(STM32_AFIO_MAPR);
val &= 0x00FFFFFF; // clear undefined readings ...
val |= AFIO_MAPR_SWDP; // set JTAG-DP disabled and SW-DP enabled
putreg32(val, STM32_AFIO_MAPR);
#else
uint32_t val = getreg32(STM32_AFIO_MAPR);
val &= 0x00FFFFFF; // clear undefined readings ...
val |= AFIO_MAPR_DISAB; // set JTAG-DP and SW-DP Disabled
putreg32(val, STM32_AFIO_MAPR);
#endif
}
/****************************************************************************
* Name: showprogress
@ -103,6 +130,7 @@ void __start(void)
stm32_clockconfig();
stm32_lowsetup();
stm32_jtag_enable();
showprogress('A');
/* Clear .bss. We'll do this inline (vs. calling memset) just to be