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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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arch/arm/src/stm32/stm32_start.c
+29 -1
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@@ -2,7 +2,7 @@
* arch/arm/src/stm32/stm32_start.c * arch/arm/src/stm32/stm32_start.c
* arch/arm/src/chip/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> * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
@@ -51,6 +51,8 @@
#include "up_internal.h" #include "up_internal.h"
#include "stm32_internal.h" #include "stm32_internal.h"
#include "stm32_gpio.h"
/**************************************************************************** /****************************************************************************
* Private Definitions * Private Definitions
@@ -67,6 +69,31 @@
/**************************************************************************** /****************************************************************************
* Private Functions * 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 * Name: showprogress
@@ -103,6 +130,7 @@ void __start(void)
stm32_clockconfig(); stm32_clockconfig();
stm32_lowsetup(); stm32_lowsetup();
stm32_jtag_enable();
showprogress('A'); showprogress('A');
/* Clear .bss. We'll do this inline (vs. calling memset) just to be /* Clear .bss. We'll do this inline (vs. calling memset) just to be