From 303ccdfdf00ec6d9bdc7b369b5e8338e4a9742bf Mon Sep 17 00:00:00 2001 From: patacongo Date: Sun, 12 Apr 2009 18:03:56 +0000 Subject: Clean up clocking git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1698 42af7a65-404d-4744-a932-0658087f49c3 --- nuttx/configs/mx1ads/src/Makefile | 2 +- nuttx/configs/mx1ads/src/up_boot.c | 105 +++++++++++++++++++++++++++++++++++++ 2 files changed, 106 insertions(+), 1 deletion(-) create mode 100755 nuttx/configs/mx1ads/src/up_boot.c (limited to 'nuttx/configs/mx1ads/src') 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 + * + * 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 +#include + +#include + +#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 +} -- cgit v1.2.3