More LPC43 files in various states of work

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4909 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 120 insertions, 0 deletions

diff --git a/nuttx/arch/arm/src/lpc43xx/lpc43_rgu.c b/nuttx/arch/arm/src/lpc43xx/lpc43_rgu.c
new file mode 100644
index 000000000..daa746483
--- /dev/null
+++ b/nuttx/arch/arm/src/lpc43xx/lpc43_rgu.c
@@ -0,0 +1,120 @@
+/****************************************************************************
+ * arch/arm/src/lpc43/lpc43_clrpend.c
+ * arch/arm/src/chip/lpc43_clrpend.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <arch/irq.h>
+
+#include "nvic.h"
+#include "up_arch.h"
+
+#include "chip.h"
+#include "lpc43_rgu.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: lpc43_softreset
+ *
+ * Description:
+ *   Reset as many of the LPC43 peripherals as possible. This is necessary
+ *   because the LPC43 does not provide any way of performing a full system
+ *   reset under debugger control.  So, if CONFIG_DEBUG is set (indicating
+ *   that a debugger is being used?), the the boot logic will call this 
+ *   function on all restarts.
+ *
+ * Assumptions:
+ *   Since this function is called early in the boot sequence, it cannot
+ *   depend on anything such as initialization of .bss or .data.  It can
+ *   only assume that it has a stack.
+ *
+ ****************************************************************************/
+
+void lpc43_softreset(void)
+{
+  irqstate_t flags;
+
+  /* Disable interrupts */
+
+  flags = irqsave();
+ 
+  /* Reset all of the peripherals that we can (safely) */
+
+  putreg32((RGU_CTRL0_LCD_RST     | RGU_CTRL0_USB0_RST     |
+            RGU_CTRL0_USB1_RST    | RGU_CTRL0_DMA_RST      |
+            RGU_CTRL0_SDIO_RST    | RGU_CTRL0_ETHERNET_RST |
+            RGU_CTRL0_GPIO_RST), LPC43_RGU_CTRL0);
+  putreg32((RGU_CTRL1_TIMER0_RST  | RGU_CTRL1_TIMER1_RST   |
+            RGU_CTRL1_TIMER2_RST  | RGU_CTRL1_TIMER3_RST   |
+            RGU_CTRL1_RITIMER_RST | RGU_CTRL1_SCT_RST      |
+            RGU_CTRL1_MCPWM_RST   | RGU_CTRL1_QEI_RST      |
+            RGU_CTRL1_ADC0_RST    | RGU_CTRL1_ADC1_RST     |
+            RGU_CTRL1_USART0_RST  | RGU_CTRL1_UART1_RST    |
+            RGU_CTRL1_USART2_RST  | RGU_CTRL1_USART3_RST   |
+            RGU_CTRL1_I2C0_RST    | RGU_CTRL1_I2C1_RST     |
+            RGU_CTRL1_SSP0_RST    | RGU_CTRL1_SSP1_RST     |
+            RGU_CTRL1_I2S_RST     | RGU_CTRL1_CAN1_RST     |
+            RGU_CTRL1_CAN0_RST    | RGU_CTRL1_M0APP_RST),
+            LPC43_RGU_CTRL1);
+
+  /* Clear all pending interupts */
+
+  putreg32(0xffffffff, NVIC_IRQ0_31_CLRPEND);
+  putreg32(0xffffffff, NVIC_IRQ32_63_CLRPEND);
+  irqrestore(flags);
+}