/* ---------------------------------------------------------------------------- *         ATMEL Microcontroller Software Support  -  ROUSSET  - * ---------------------------------------------------------------------------- * Copyright (c) 2006, Atmel Corporation * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the disclaiimer below. * * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the disclaimer below in the documentation and/or * other materials provided with the distribution. * * Atmel's name may not be used to endorse or promote products derived from * this software without specific prior written permission. * * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE * DISCLAIMED. IN NO EVENT SHALL ATMEL 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. * ---------------------------------------------------------------------------- * File Name           : at91sam9261ek.c * Object              : * Creation            : ODi Apr 19th 2006 *----------------------------------------------------------------------------- */#include "../../include/part.h"#include "../../include/gpio.h"#include "../../include/pmc.h"#include "../../include/debug.h"#include "../../include/sdramc.h"#include "../../include/main.h"#ifdef CFG_NANDFLASH#include "../../include/nandflash.h"#endifstatic inline unsigned int get_cp15(void){	unsigned int value;	__asm__("mrc p15, 0, %0, c1, c0, 0" : "=r" (value));	return value;}static inline void set_cp15(unsigned int value){	__asm__("mcr p15, 0, %0, c1, c0, 0" : : "r" (value));}#ifdef CFG_HW_INIT/*------------------------------------------------------------------------------*//* \fn    hw_init								*//* \brief This function performs very low level HW initialization		*//* This function is invoked as soon as possible during the c_startup	       	*//* The bss segment must be initialized					       	*//*------------------------------------------------------------------------------*/void hw_init(void){	unsigned int cp15;		/* Configure PIOs */	const struct pio_desc hw_pio[] = {#ifdef CFG_DEBUG		{"RXD", AT91C_PIN_PA(9), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"TXD", AT91C_PIN_PA(10), 0, PIO_DEFAULT, PIO_PERIPH_A},#endif		{"", 0, 0, PIO_DEFAULT, PIO_PERIPH_A},	};	/* Disable watchdog */	writel(AT91C_WDTC_WDDIS, AT91C_BASE_WDTC + WDTC_WDMR);	/* At this stage the main oscillator is supposed to be enabled	 * PCK = MCK = MOSC */	/* Configure PLLA = MOSC * (PLL_MULA + 1) / PLL_DIVA */	pmc_cfg_plla(PLLA_SETTINGS, PLL_LOCK_TIMEOUT);	/* Switch MCK on PLLA output PCK = PLLA = 2 * MCK */	pmc_cfg_mck(MCKR_SETTINGS, PLL_LOCK_TIMEOUT);	/* Configure PLLB */	pmc_cfg_pllb(PLLB_SETTINGS, PLL_LOCK_TIMEOUT);	/* Configure CP15 */	cp15 = get_cp15();	cp15 |= I_CACHE;	set_cp15(cp15);	/* Configure the PIO controller to output PCK0 */	pio_setup(hw_pio);#ifdef CFG_DEBUG	/* Enable Debug messages on the DBGU */	dbg_init(BAUDRATE(MASTER_CLOCK, 115200));	dbg_print("Start AT91Bootstrap...\n\r");#endif /* CFG_DEBUG */	/* Initialize the matrix */	writel(readl(AT91C_BASE_MATRIX + MATRIX_SCFG0) | AT91C_MATRIX_DEFMSTR_TYPE_FIXED_DEFMSTR | AT91C_MATRIX_FIXED_DEFMSTR0_ARM926D, AT91C_BASE_MATRIX + MATRIX_SCFG0);	writel(readl(AT91C_BASE_MATRIX + MATRIX_SCFG3) | AT91C_MATRIX_DEFMSTR_TYPE_FIXED_DEFMSTR | AT91C_MATRIX_FIXED_DEFMSTR0_ARM926D, AT91C_BASE_MATRIX + MATRIX_SCFG3);#ifdef CFG_SDRAM	/* Initialize the matrix */	writel(readl(AT91C_BASE_MATRIX + MATRIX_EBICSA) | AT91C_MATRIX_CS1A_SDRAMC, AT91C_BASE_MATRIX + MATRIX_EBICSA);#ifdef MCK_100	/* Configure SDRAM Controller */	sdram_init(	AT91C_SDRAMC_NC_9  |				AT91C_SDRAMC_NR_13 |				AT91C_SDRAMC_CAS_2 |				AT91C_SDRAMC_NB_4_BANKS |				AT91C_SDRAMC_DBW_32_BITS |				AT91C_SDRAMC_TWR_2 |				AT91C_SDRAMC_TRC_7 |				AT91C_SDRAMC_TRP_2 |				AT91C_SDRAMC_TRCD_2 |				AT91C_SDRAMC_TRAS_5 |				AT91C_SDRAMC_TXSR_8,		/* Control Register */				(MASTER_CLOCK * 7)/1000000);	/* Refresh Timer Register */#else	/* 133 MHz */	/* Configure SDRAM Controller */	sdram_init(	AT91C_SDRAMC_NC_9  |				AT91C_SDRAMC_NR_13 |				AT91C_SDRAMC_CAS_3 |				AT91C_SDRAMC_NB_4_BANKS |				AT91C_SDRAMC_DBW_32_BITS |				AT91C_SDRAMC_TWR_2 |				AT91C_SDRAMC_TRC_9 |				AT91C_SDRAMC_TRP_3 |				AT91C_SDRAMC_TRCD_3 |				AT91C_SDRAMC_TRAS_6 |				AT91C_SDRAMC_TXSR_10,		/* Control Register */				(MASTER_CLOCK * 7)/1000000);	/* Refresh Timer Register */#endif#endif}#endif /* CFG_HW_INIT */#ifdef CFG_SDRAM/*------------------------------------------------------------------------------*//* \fn    sdramc_hw_init							*//* \brief This function performs SDRAMC HW initialization			*//*------------------------------------------------------------------------------*/void sdramc_hw_init(void){	/* Configure PIOs */	const struct pio_desc sdramc_pio[] = {		{"D16", AT91C_PIN_PC(16), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"D17", AT91C_PIN_PC(17), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"D18", AT91C_PIN_PC(18), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"D19", AT91C_PIN_PC(19), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"D20", AT91C_PIN_PC(20), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"D21", AT91C_PIN_PC(21), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"D22", AT91C_PIN_PC(22), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"D23", AT91C_PIN_PC(23), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"D24", AT91C_PIN_PC(24), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"D25", AT91C_PIN_PC(25), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"D26", AT91C_PIN_PC(26), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"D27", AT91C_PIN_PC(27), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"D28", AT91C_PIN_PC(28), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"D29", AT91C_PIN_PC(29), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"D30", AT91C_PIN_PC(30), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"D31", AT91C_PIN_PC(31), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"", 0, 0, PIO_DEFAULT, PIO_PERIPH_A},	};	/* Configure the SDRAMC PIO controller to output PCK0 */	pio_setup(sdramc_pio);}#endif#ifdef CFG_DATAFLASH/*------------------------------------------------------------------------------*//* \fn    df_hw_init								*//* \brief This function performs DataFlash HW initialization			*//*------------------------------------------------------------------------------*/void df_hw_init(void){	/* Configure PIOs */	const struct pio_desc df_pio[] = {		{"MISO",  AT91C_PIN_PA(0), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"MOSI",  AT91C_PIN_PA(1), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"SPCK",  AT91C_PIN_PA(2), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"NPCS0", AT91C_PIN_PA(3), 0, PIO_DEFAULT, PIO_PERIPH_A},		{"", 0, 0, PIO_DEFAULT, PIO_PERIPH_A},	};	/* Configure the PIO controller */	pio_setup(df_pio);}#endif /* CFG_DATAFLASH */#ifdef CFG_NANDFLASH/*------------------------------------------------------------------------------*//* \fn    nandflash_hw_init							*//* \brief NandFlash HW init							*//*------------------------------------------------------------------------------*/void nandflash_hw_init(void){	/* Configure PIOs */	const struct pio_desc nand_pio[] = {		{"SMOE",    AT91C_PIN_PC(0), 0, PIO_PULLUP, PIO_PERIPH_A},		{"SMWE",    AT91C_PIN_PC(1), 0, PIO_PULLUP, PIO_PERIPH_A},		{"NANDCS",  AT91C_PIN_PC(14), 0, PIO_PULLUP, PIO_OUTPUT},		{"RDY_BSY", AT91C_PIN_PC(15), 0, PIO_PULLUP, PIO_INPUT},		{"", 0, 0,  PIO_DEFAULT, PIO_PERIPH_A},	};	/* Setup Smart Media, first enable the address range of CS3 in HMATRIX user interface */	writel(readl(AT91C_BASE_MATRIX + MATRIX_EBICSA) | AT91C_MATRIX_CS3A_SM, AT91C_BASE_MATRIX + MATRIX_EBICSA);		    	/* Configure SMC CS3 */ 	writel((AT91C_SM_NWE_SETUP | AT91C_SM_NCS_WR_SETUP | AT91C_SM_NRD_SETUP | AT91C_SM_NCS_RD_SETUP), AT91C_BASE_SMC + SMC_SETUP3);  	writel((AT91C_SM_NWE_PULSE | AT91C_SM_NCS_WR_PULSE | AT91C_SM_NRD_PULSE | AT91C_SM_NCS_RD_PULSE), AT91C_BASE_SMC + SMC_PULSE3);	writel((AT91C_SM_NWE_CYCLE | AT91C_SM_NRD_CYCLE)						, AT91C_BASE_SMC + SMC_CYCLE3);	writel((AT91C_SMC_READMODE | AT91C_SMC_WRITEMODE | AT91C_SMC_NWAITM_NWAIT_DISABLE |   		AT91C_SMC_DBW_WIDTH_EIGTH_BITS | AT91C_SM_TDF)						, AT91C_BASE_SMC + SMC_CTRL3);	/* Configure the PIO controller */	writel((1 << AT91C_ID_PIOC), PMC_PCER + AT91C_BASE_PMC);	pio_setup(nand_pio);}void nandflash_cfg_16bits_dbw_init(void){	writel(readl(AT91C_BASE_SMC + SMC_CTRL3) | AT91C_SMC_DBW_WIDTH_SIXTEEN_BITS, AT91C_BASE_SMC + SMC_CTRL3);}#endif /* #ifdef CFG_NANDFLASH */