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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2009-04-12 18:03:56 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2009-04-12 18:03:56 +0000 |
commit | 303ccdfdf00ec6d9bdc7b369b5e8338e4a9742bf (patch) | |
tree | e7a3a394109ab84701581cc257419ae344b2d866 /nuttx/configs/mx1ads/src | |
parent | 0162245b27eb72c2973c587e5ea59317b43b88bd (diff) | |
download | px4-nuttx-303ccdfdf00ec6d9bdc7b369b5e8338e4a9742bf.tar.gz px4-nuttx-303ccdfdf00ec6d9bdc7b369b5e8338e4a9742bf.tar.bz2 px4-nuttx-303ccdfdf00ec6d9bdc7b369b5e8338e4a9742bf.zip |
Clean up clocking
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1698 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/configs/mx1ads/src')
-rw-r--r-- | nuttx/configs/mx1ads/src/Makefile | 2 | ||||
-rwxr-xr-x | nuttx/configs/mx1ads/src/up_boot.c | 105 |
2 files changed, 106 insertions, 1 deletions
diff --git a/nuttx/configs/mx1ads/src/Makefile b/nuttx/configs/mx1ads/src/Makefile index eba605d8c..9078d5832 100644 --- a/nuttx/configs/mx1ads/src/Makefile +++ b/nuttx/configs/mx1ads/src/Makefile @@ -39,7 +39,7 @@ CFLAGS += -I$(TOPDIR)/sched ASRCS = AOBJS = $(ASRCS:.S=$(OBJEXT)) -CSRCS = up_leds.c up_network.c +CSRCS = up_boot.c up_leds.c up_network.c COBJS = $(CSRCS:.c=$(OBJEXT)) SRCS = $(ASRCS) $(CSRCS) diff --git a/nuttx/configs/mx1ads/src/up_boot.c b/nuttx/configs/mx1ads/src/up_boot.c new file mode 100755 index 000000000..237f6aa9b --- /dev/null +++ b/nuttx/configs/mx1ads/src/up_boot.c @@ -0,0 +1,105 @@ +/************************************************************************************
+ * configs/mx1ads/src/up_boot.c
+ * arch/arm/src/board/up_boot.c
+ *
+ * Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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 <sys/types.h>
+
+#include <arch/board/board.h>
+
+#include "up_arch.h"
+#include "imx_gpio.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: imx_boardinitialize
+ *
+ * Description:
+ * All i.MX architectures must provide the following entry point. This entry point
+ * is called early in the intitialization -- after all memory has been configured
+ * and mapped but before any devices have been initialized.
+ ************************************************************************************/
+
+void imx_boardinitialize(void)
+{
+ uint32 regval;
+
+ putreg32(0x000003ab, IMX_SC_GPCR); /* I/O pad driving strength */
+ putreg32(IMX_MPCTL0_VALUE, IMX_PLL_MPCTL0);
+ putreg32(IMX_SPCTL0_VALUE, IMX_PLL_SPCTL0);
+
+ regval = (CSCR_CLKOSEL_FCLK | /* Output FCLK on CLK0 */
+ (IMX_CSCR_USBDIV << PLL_CSCR_USBDIV_SHIFT) | /* USB divider */
+ CSCR_SDCNT_4thEDGE | /* Shutdown on 4th edge */
+ (IMX_CSCR_BCLKDIV << PLL_CSCR_BCLKDIV_SHIFT) | /* Bclock divider */
+ PLL_CSCR_SPEN | PLL_CSCR_MPEN); /* Enable MUC and System PLL */
+ putreg32(regval, IMX_PLL_CSCR);
+
+ /* Use these new frequencies now */
+
+ putreg32(IMX_PLL_CSCR, regval | (PLL_CSCR_MPLLRESTART|PLL_CSCR_SPLLRESTART));
+
+ /* Setup peripheral clocking */
+
+ putreg32(IMX_PCDR_VALUE, IMX_PLL_PCDR);
+
+ /* Configure CS4 for cs8900 Ethernet */
+
+#ifdef CONFIG_NET
+ putreg32(0x00000f00, IMX_EIM_CS4H);
+ putreg32(0x00001501, IMX_EIM_CS4L);
+
+ imxgpio_configprimary(GPIOA, 21);
+ imxgpio_configprimary(GPIOA, 22);
+
+ regval = getreg32(IMX_CS4_VSECTION + 0x0c);
+ regval = getreg32(IMX_CS4_VSECTION + 0x0c);
+#endif
+}
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