diff options
Diffstat (limited to 'nuttx/arch/arm')
| -rw-r--r-- | nuttx/arch/arm/src/stm32/stm32_start.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/nuttx/arch/arm/src/stm32/stm32_start.c b/nuttx/arch/arm/src/stm32/stm32_start.c index 1ac753f5a..9deb19dd2 100644 --- a/nuttx/arch/arm/src/stm32/stm32_start.c +++ b/nuttx/arch/arm/src/stm32/stm32_start.c @@ -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 |