/* * Copyright (C) 2012 by Ole Reinhardt (ole.reinhardt@embedded-it.de) * * All rights reserved. * * 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 of the copyright holders nor the names of * 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. * * For additional information see http://www.ethernut.de/ */ /* * \file arch/cm3/board/lisa.c * \brief Lisa board initialization. * * * \verbatim * $Id: $ * \endverbatim */ #include #include #include #include #include #include #include #include /* SDRAM configuration for Lisa board */ /* configuration for IS42S16100E sdram. */ #define SDRAM_BASE_ADDR 0xA0000000 #define SDRAM_SIZE 0x00200000 /* Samsung IS42S16100E SDRAMs */ static SDRAM sdram_is42s16100e = { .base_addr = SDRAM_BASE_ADDR, .size = SDRAM_SIZE, .bus_width = 16, .rows = 11, .cols = 8, .ras_latency = 3, .cas_latency = 3, .tRP = 21, .tRAS = 42, .tSREX = 70, /* same as .tXSR */ .tAPR = 1, .tDAL = 5, .tWR = 3, .tRC = 63, .tRFC = 66, .tXSR = 70, .tRRD = 15, .tMRD = 2, .refresh = 7000, // .refresh = 32000, }; /*! * \brief Delay loop. * * We are running prior to Nut/OS timer initialization and cannot use * NutSleep, not even NutDelay. * * \param Number of loops to execute. */ static void Lisa_Delay(int n) { int l; for (l = 0; l < n; l++) { _NOP(); } } /*! * \brief Early LISA hardware initialization. Especialy SD-RAM * * This routine is called during system initalization. */ void NutBoardInit(void) { int i; /* Configure SDRAM interface GPIO Pins */ /* Pin configuration: * P2.14 - /EMC_CS2 - not used * P2.15 - /EMC_CS3 - not used * * P2.16 - /EMC_CAS * P2.17 - /EMC_RAS * P2.18 - EMC_CLK[0] * P2.19 - EMC_CLK[1] - not used * * P2.20 - EMC_DYCS0 * P2.21 - EMC_DYCS1 - not used * P2.22 - EMC_DYCS2 - not used * P2.23 - EMC_DYCS3 - not used * * P2.24 - EMC_CKE0 * P2.25 - EMC_CKE1 - not used * P2.26 - EMC_CKE2 - not used * P2.27 - EMC_CKE3 - not used * * P2.28 - EMC_DQM0 * P2.29 - EMC_DQM1 * P2.30 - EMC_DQM2 - not used * P2.31 - EMC_DQM3 - not used * * P3.0-P3.31 - EMC_D[0-31] - only D0 .. D15 used * P4.0-P4.23 - EMC_A[0-23] - only A0 .. A11 used * * P4.24 - /EMC_OE - not used * P4.25 - /EMC_WE * * P4.30 - /EMC_CS0 - not used * P4.31 - /EMC_CS1 - not used */ GpioPinConfigSet(NUTGPIO_PORT2, 16, GPIO_CFG_PERIPHERAL1 | GPIO_CFG_SLEWCTRL); GpioPinConfigSet(NUTGPIO_PORT2, 17, GPIO_CFG_PERIPHERAL1 | GPIO_CFG_SLEWCTRL); GpioPinConfigSet(NUTGPIO_PORT2, 18, GPIO_CFG_PERIPHERAL1 | GPIO_CFG_SLEWCTRL); GpioPinConfigSet(NUTGPIO_PORT2, 20, GPIO_CFG_PERIPHERAL1 | GPIO_CFG_SLEWCTRL); GpioPinConfigSet(NUTGPIO_PORT2, 24, GPIO_CFG_PERIPHERAL1 | GPIO_CFG_SLEWCTRL); GpioPinConfigSet(NUTGPIO_PORT2, 28, GPIO_CFG_PERIPHERAL1 | GPIO_CFG_SLEWCTRL); GpioPinConfigSet(NUTGPIO_PORT2, 29, GPIO_CFG_PERIPHERAL1 | GPIO_CFG_SLEWCTRL); /* Configure D0 .. D15 */ for(i = 0; i < 16; i++) { GpioPinConfigSet(NUTGPIO_PORT3, i, GPIO_CFG_PERIPHERAL1 | GPIO_CFG_SLEWCTRL | GPIO_CFG_REPEATER); } /* Configure A0 .. A10 */ for(i = 0; i < 11; i++) { GpioPinConfigSet(NUTGPIO_PORT4, i, GPIO_CFG_PERIPHERAL1 | GPIO_CFG_SLEWCTRL); } /* Configure A13 (bank select) */ GpioPinConfigSet(NUTGPIO_PORT4, 13, GPIO_CFG_PERIPHERAL1 | GPIO_CFG_SLEWCTRL); GpioPinConfigSet(NUTGPIO_PORT4, 25, GPIO_CFG_PERIPHERAL1 | GPIO_CFG_SLEWCTRL); /* Initialize the external memory controller */ Lpc177x_8x_EmcInit(); Lpc177x_8x_EmcSDRAMInit(sdram_is42s16100e, 0x00001080 /* bank-row-column mode: 11 rows, 8 cols, 1Mx16, 16MBit */); /* Configure Ethernet PHY */ /* Reset the PHY and configure the bootstrap pins using the pullup / pulldown resistors */ GpioPinConfigSet(NUTGPIO_PORT1, 13, GPIO_CFG_OUTPUT); /* PHY Reset */ GpioPinSetLow(NUTGPIO_PORT1, 13); /* Put PHY into reset */ GpioPinConfigSet(NUTGPIO_PORT1, 9, GPIO_CFG_INPUT | GPIO_CFG_PULLUP | GPIO_CFG_PERIPHERAL0); /* MODE0 -- ETH_RXD0 */ GpioPinConfigSet(NUTGPIO_PORT1, 10, GPIO_CFG_INPUT | GPIO_CFG_PULLUP | GPIO_CFG_PERIPHERAL0); /* MODE1 -- ETH_RXD1 */ GpioPinConfigSet(NUTGPIO_PORT1, 8, GPIO_CFG_INPUT | GPIO_CFG_PULLUP | GPIO_CFG_PERIPHERAL0); /* MODE2 -- ETH_CRS */ GpioPinConfigSet(NUTGPIO_PORT1, 14, GPIO_CFG_INPUT | GPIO_CFG_PULLDOWN | GPIO_CFG_PERIPHERAL0); /* PHY_AD0 -- ETH_RXER */ Lisa_Delay(25000); GpioPinSetHigh(NUTGPIO_PORT1, 13); /* Put PHY into reset */ Lisa_Delay(1000); } /*! * \brief Adjust the sdram timings to compensate temperature drifts * * This function is called as timer callback which was initialised at NutIdleInit() */ static void adjust_sdram_timing(HANDLE this, void* arg) { Lpc177x_8x_EmcSDRAMAdjustTiming(); } /*! * \brief Extended system initialisation. Add sdram memory to the available memory * * This routine is called during system initialisation right before the idle * thread is created. We will use it to add the SDRAM memory space to out heap. */ void NutIdleInit(void) { /* Sanity check if the sdram is working. If all is fine add the sdram to heap space. */ if (Lpc177x_8x_EmcSDRAMCheck(sdram_is42s16100e, 0xaa55) == 0) { NutHeapAdd((void*)sdram_is42s16100e.base_addr, sdram_is42s16100e.size); } /* Initialise a timer that re-calibrates the delay loops once a minute to compensate temperature drift of the sdram controller */ NutTimerStart(60000, adjust_sdram_timing, NULL, 0); }