board/mpl/vcma9/vcma9.c - github/trini/u-boot - Gitiles

 /*
  * (C) Copyright 2002
  * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
  * Marius Groeger <mgroeger@sysgo.de>
  *
  * (C) Copyright 2002
  * David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
  *
  * See file CREDITS for list of people who contributed to this
  * project.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation; either version 2 of
  * the License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  * MA 02111-1307 USA
  */

 #include <common.h>
 #include <netdev.h>
 #include <asm/arch/s3c24x0_cpu.h>
 #include <stdio_dev.h>
 #include <i2c.h>

 #include "vcma9.h"
 #include "../common/common_util.h"

 DECLARE_GLOBAL_DATA_PTR;

 #define FCLK_SPEED 1

 #if FCLK_SPEED==0		/* Fout = 203MHz, Fin = 12MHz for Audio */
 #define M_MDIV	0xC3
 #define M_PDIV	0x4
 #define M_SDIV	0x1
 #elif FCLK_SPEED==1		/* Fout = 202.8MHz */
 #define M_MDIV	0xA1
 #define M_PDIV	0x3
 #define M_SDIV	0x1
 #endif

 #define USB_CLOCK 1

 #if USB_CLOCK==0
 #define U_M_MDIV	0xA1
 #define U_M_PDIV	0x3
 #define U_M_SDIV	0x1
 #elif USB_CLOCK==1
 #define U_M_MDIV	0x48
 #define U_M_PDIV	0x3
 #define U_M_SDIV	0x2
 #endif

 static inline void delay(unsigned long loops)
 {
 	__asm__ volatile ("1:\n"
 	  "subs %0, %1, #1\n"
 	  "bne 1b":"=r" (loops):"0" (loops));
 }

 /*
  * Miscellaneous platform dependent initialisations
  */

 int board_init(void)
 {
 	struct s3c24x0_clock_power * const clk_power =
 					s3c24x0_get_base_clock_power();
 	struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();

 	/* to reduce PLL lock time, adjust the LOCKTIME register */
 	clk_power->locktime = 0xFFFFFF;

 	/* configure MPLL */
 	clk_power->mpllcon = ((M_MDIV << 12) + (M_PDIV << 4) + M_SDIV);

 	/* some delay between MPLL and UPLL */
 	delay (4000);

 	/* configure UPLL */
 	clk_power->upllcon = ((U_M_MDIV << 12) + (U_M_PDIV << 4) + U_M_SDIV);

 	/* some delay between MPLL and UPLL */
 	delay (8000);

 	/* set up the I/O ports */
 	gpio->gpacon = 0x007FFFFF;
 	gpio->gpbcon = 0x002AAAAA;
 	gpio->gpbup = 0x000002BF;
 	gpio->gpccon = 0xAAAAAAAA;
 	gpio->gpcup = 0x0000FFFF;
 	gpio->gpdcon = 0xAAAAAAAA;
 	gpio->gpdup = 0x0000FFFF;
 	gpio->gpecon = 0xAAAAAAAA;
 	gpio->gpeup = 0x000037F7;
 	gpio->gpfcon = 0x00000000;
 	gpio->gpfup = 0x00000000;
 	gpio->gpgcon = 0xFFEAFF5A;
 	gpio->gpgup = 0x0000F0DC;
 	gpio->gphcon = 0x0028AAAA;
 	gpio->gphup = 0x00000656;

 	/* setup correct IRQ modes for NIC */
 	/* rising edge mode */
 	gpio->extint2 = (gpio->extint2 & ~(7<<8)) | (4<<8);

 	/* select USB port 2 to be host or device (fix to host for now) */
 	gpio->misccr |= 0x08;

 	/* init serial */
 	gd->baudrate = CONFIG_BAUDRATE;
 	gd->have_console = 1;
 	serial_init();

 	/* arch number of VCMA9-Board */
 	gd->bd->bi_arch_number = MACH_TYPE_MPL_VCMA9;

 	/* adress of boot parameters */
 	gd->bd->bi_boot_params = 0x30000100;

 	icache_enable();
 	dcache_enable();

 	return 0;
 }

 /*
  * NAND flash initialization.
  */
 #if defined(CONFIG_CMD_NAND)
 extern ulong
 nand_probe(ulong physadr);


 static inline void NF_Reset(void)
 {
     int i;

     NF_SetCE(NFCE_LOW);
     NF_Cmd(0xFF);		/* reset command */
     for(i = 0; i < 10; i++);	/* tWB = 100ns. */
     NF_WaitRB();		/* wait 200~500us; */
     NF_SetCE(NFCE_HIGH);
 }


 static inline void NF_Init(void)
 {
 #if 0 /* a little bit too optimistic */
 #define TACLS   0
 #define TWRPH0  3
 #define TWRPH1  0
 #else
 #define TACLS   0
 #define TWRPH0  4
 #define TWRPH1  2
 #endif

     NF_Conf((1<<15)|(0<<14)|(0<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0));
     /*nand->NFCONF = (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0); */
     /* 1  1    1     1,   1      xxx,  r xxx,   r xxx */
     /* En 512B 4step ECCR nFCE=H tACLS   tWRPH0   tWRPH1 */

     NF_Reset();
 }

 void
 nand_init(void)
 {
 	struct s3c2410_nand * const nand = s3c2410_get_base_nand();

 	NF_Init();
 #ifdef DEBUG
 	printf("NAND flash probing at 0x%.8lX\n", (ulong)nand);
 #endif
 	printf ("%4lu MB\n", nand_probe((ulong)nand) >> 20);
 }
 #endif

 /*
  * Get some Board/PLD Info
  */

 static u8 Get_PLD_ID(void)
 {
 	VCMA9_PLD * const pld = VCMA9_get_base_PLD();

 	return(pld->ID);
 }

 static u8 Get_PLD_BOARD(void)
 {
 	VCMA9_PLD * const pld = VCMA9_get_base_PLD();

 	return(pld->BOARD);
 }

 static u8 Get_PLD_SDRAM(void)
 {
 	VCMA9_PLD * const pld = VCMA9_get_base_PLD();

 	return(pld->SDRAM);
 }

 static u8 Get_PLD_Version(void)
 {
 	return((Get_PLD_ID() >> 4) & 0x0F);
 }

 static u8 Get_PLD_Revision(void)
 {
 	return(Get_PLD_ID() & 0x0F);
 }

 #if 0	/* not used */
 static int Get_Board_Config(void)
 {
 	u8 config = Get_PLD_BOARD() & 0x03;

 	if (config == 3)
 	    return 1;
 	else
 	    return 0;
 }
 #endif

 static uchar Get_Board_PCB(void)
 {
 	return(((Get_PLD_BOARD() >> 4) & 0x03) + 'A');
 }

 static u8 Get_SDRAM_ChipNr(void)
 {
 	switch ((Get_PLD_SDRAM() >> 4) & 0x0F) {
 		case 0: return 4;
 		case 1: return 1;
 		case 2: return 2;
 		default: return 0;
 	}
 }

 static ulong Get_SDRAM_ChipSize(void)
 {
 	switch (Get_PLD_SDRAM() & 0x0F) {
 		case 0: return 16 * (1024*1024);
 		case 1: return 32 * (1024*1024);
 		case 2: return  8 * (1024*1024);
 		case 3: return  8 * (1024*1024);
 		default: return 0;
 	}
 }
 static const char * Get_SDRAM_ChipGeom(void)
 {
 	switch (Get_PLD_SDRAM() & 0x0F) {
 		case 0: return "4Mx8x4";
 		case 1: return "8Mx8x4";
 		case 2: return "2Mx8x4";
 		case 3: return "4Mx8x2";
 		default: return "unknown";
 	}
 }

 static void Show_VCMA9_Info(char *board_name, char *serial)
 {
 	printf("Board: %s SN: %s  PCB Rev: %c PLD(%d,%d)\n",
 		board_name, serial, Get_Board_PCB(), Get_PLD_Version(), Get_PLD_Revision());
 	printf("SDRAM: %d chips %s\n", Get_SDRAM_ChipNr(), Get_SDRAM_ChipGeom());
 }

 int dram_init(void)
 {
 	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 	gd->bd->bi_dram[0].size = Get_SDRAM_ChipSize() * Get_SDRAM_ChipNr();

 	return 0;
 }

 /* ------------------------------------------------------------------------- */

 /*
  * Check Board Identity:
  */

 int checkboard(void)
 {
 	char s[50];
 	int i;
 	backup_t *b = (backup_t *) s;

 	i = getenv_f("serial#", s, 32);
 	if ((i < 0) || strncmp (s, "VCMA9", 5)) {
 		get_backup_values (b);
 		if (strncmp (b->signature, "MPL\0", 4) != 0) {
 			puts ("### No HW ID - assuming VCMA9");
 		} else {
 			b->serial_name[5] = 0;
 			Show_VCMA9_Info(b->serial_name, &b->serial_name[6]);
 		}
 	} else {
 		s[5] = 0;
 		Show_VCMA9_Info(s, &s[6]);
 	}
 	/*printf("\n");*/
 	return(0);
 }


 int last_stage_init(void)
 {
 	checkboard();
 	stdio_print_current_devices();
 	check_env();
 	return 0;
 }

 /***************************************************************************
  * some helping routines
  */
 #if !CONFIG_USB_KEYBOARD
 int overwrite_console(void)
 {
 	/* return TRUE if console should be overwritten */
 	return 0;
 }
 #endif

 /************************************************************************
 * Print VCMA9 Info
 ************************************************************************/
 void print_vcma9_info(void)
 {
 	char s[50];
 	int i;

 	if ((i = getenv_f("serial#", s, 32)) < 0) {
 		puts ("### No HW ID - assuming VCMA9");
 		printf("i %d", i*24);
 	} else {
 		s[5] = 0;
 		Show_VCMA9_Info(s, &s[6]);
 	}
 }

 #ifdef CONFIG_CMD_NET
 int board_eth_init(bd_t *bis)
 {
 	int rc = 0;
 #ifdef CONFIG_CS8900
 	rc = cs8900_initialize(0, CONFIG_CS8900_BASE);
 #endif
 	return rc;
 }
 #endif
	/*
	* (C) Copyright 2002
	* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
	* Marius Groeger <mgroeger@sysgo.de>
	*
	* (C) Copyright 2002
	* David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
	*
	* See file CREDITS for list of people who contributed to this
	* project.
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License as
	* published by the Free Software Foundation; either version 2 of
	* the License, or (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	* MA 02111-1307 USA
	*/

	#include <common.h>
	#include <netdev.h>
	#include <asm/arch/s3c24x0_cpu.h>
	#include <stdio_dev.h>
	#include <i2c.h>

	#include "vcma9.h"
	#include "../common/common_util.h"

	DECLARE_GLOBAL_DATA_PTR;

	#define FCLK_SPEED 1

	#if FCLK_SPEED==0 /* Fout = 203MHz, Fin = 12MHz for Audio */
	#define M_MDIV 0xC3
	#define M_PDIV 0x4
	#define M_SDIV 0x1
	#elif FCLK_SPEED==1 /* Fout = 202.8MHz */
	#define M_MDIV 0xA1
	#define M_PDIV 0x3
	#define M_SDIV 0x1
	#endif

	#define USB_CLOCK 1

	#if USB_CLOCK==0
	#define U_M_MDIV 0xA1
	#define U_M_PDIV 0x3
	#define U_M_SDIV 0x1
	#elif USB_CLOCK==1
	#define U_M_MDIV 0x48
	#define U_M_PDIV 0x3
	#define U_M_SDIV 0x2
	#endif

	static inline void delay(unsigned long loops)
	{
	__asm__ volatile ("1:\n"
	"subs %0, %1, #1\n"
	"bne 1b":"=r" (loops):"0" (loops));
	}

	/*
	* Miscellaneous platform dependent initialisations
	*/

	int board_init(void)
	{
	struct s3c24x0_clock_power * const clk_power =
	s3c24x0_get_base_clock_power();
	struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();

	/* to reduce PLL lock time, adjust the LOCKTIME register */
	clk_power->locktime = 0xFFFFFF;

	/* configure MPLL */
	clk_power->mpllcon = ((M_MDIV << 12) + (M_PDIV << 4) + M_SDIV);

	/* some delay between MPLL and UPLL */
	delay (4000);

	/* configure UPLL */
	clk_power->upllcon = ((U_M_MDIV << 12) + (U_M_PDIV << 4) + U_M_SDIV);

	/* some delay between MPLL and UPLL */
	delay (8000);

	/* set up the I/O ports */
	gpio->gpacon = 0x007FFFFF;
	gpio->gpbcon = 0x002AAAAA;
	gpio->gpbup = 0x000002BF;
	gpio->gpccon = 0xAAAAAAAA;
	gpio->gpcup = 0x0000FFFF;
	gpio->gpdcon = 0xAAAAAAAA;
	gpio->gpdup = 0x0000FFFF;
	gpio->gpecon = 0xAAAAAAAA;
	gpio->gpeup = 0x000037F7;
	gpio->gpfcon = 0x00000000;
	gpio->gpfup = 0x00000000;
	gpio->gpgcon = 0xFFEAFF5A;
	gpio->gpgup = 0x0000F0DC;
	gpio->gphcon = 0x0028AAAA;
	gpio->gphup = 0x00000656;

	/* setup correct IRQ modes for NIC */
	/* rising edge mode */
	gpio->extint2 = (gpio->extint2 & ~(7<<8)) \| (4<<8);

	/* select USB port 2 to be host or device (fix to host for now) */
	gpio->misccr \|= 0x08;

	/* init serial */
	gd->baudrate = CONFIG_BAUDRATE;
	gd->have_console = 1;
	serial_init();

	/* arch number of VCMA9-Board */
	gd->bd->bi_arch_number = MACH_TYPE_MPL_VCMA9;

	/* adress of boot parameters */
	gd->bd->bi_boot_params = 0x30000100;

	icache_enable();
	dcache_enable();

	return 0;
	}

	/*
	* NAND flash initialization.
	*/
	#if defined(CONFIG_CMD_NAND)
	extern ulong
	nand_probe(ulong physadr);


	static inline void NF_Reset(void)
	{
	int i;

	NF_SetCE(NFCE_LOW);
	NF_Cmd(0xFF); /* reset command */
	for(i = 0; i < 10; i++); /* tWB = 100ns. */
	NF_WaitRB(); /* wait 200~500us; */
	NF_SetCE(NFCE_HIGH);
	}


	static inline void NF_Init(void)
	{
	#if 0 /* a little bit too optimistic */
	#define TACLS 0
	#define TWRPH0 3
	#define TWRPH1 0
	#else
	#define TACLS 0
	#define TWRPH0 4
	#define TWRPH1 2
	#endif

	NF_Conf((1<<15)\|(0<<14)\|(0<<13)\|(1<<12)\|(1<<11)\|(TACLS<<8)\|(TWRPH0<<4)\|(TWRPH1<<0));
	/nand->NFCONF = (1<<15)\|(1<<14)\|(1<<13)\|(1<<12)\|(1<<11)\|(TACLS<<8)\|(TWRPH0<<4)\|(TWRPH1<<0); /
	/* 1 1 1 1, 1 xxx, r xxx, r xxx */
	/* En 512B 4step ECCR nFCE=H tACLS tWRPH0 tWRPH1 */

	NF_Reset();
	}

	void
	nand_init(void)
	{
	struct s3c2410_nand * const nand = s3c2410_get_base_nand();

	NF_Init();
	#ifdef DEBUG
	printf("NAND flash probing at 0x%.8lX\n", (ulong)nand);
	#endif
	printf ("%4lu MB\n", nand_probe((ulong)nand) >> 20);
	}
	#endif

	/*
	* Get some Board/PLD Info
	*/

	static u8 Get_PLD_ID(void)
	{
	VCMA9_PLD * const pld = VCMA9_get_base_PLD();

	return(pld->ID);
	}

	static u8 Get_PLD_BOARD(void)
	{
	VCMA9_PLD * const pld = VCMA9_get_base_PLD();

	return(pld->BOARD);
	}

	static u8 Get_PLD_SDRAM(void)
	{
	VCMA9_PLD * const pld = VCMA9_get_base_PLD();

	return(pld->SDRAM);
	}

	static u8 Get_PLD_Version(void)
	{
	return((Get_PLD_ID() >> 4) & 0x0F);
	}

	static u8 Get_PLD_Revision(void)
	{
	return(Get_PLD_ID() & 0x0F);
	}

	#if 0 /* not used */
	static int Get_Board_Config(void)
	{
	u8 config = Get_PLD_BOARD() & 0x03;

	if (config == 3)
	return 1;
	else
	return 0;
	}
	#endif

	static uchar Get_Board_PCB(void)
	{
	return(((Get_PLD_BOARD() >> 4) & 0x03) + 'A');
	}

	static u8 Get_SDRAM_ChipNr(void)
	{
	switch ((Get_PLD_SDRAM() >> 4) & 0x0F) {
	case 0: return 4;
	case 1: return 1;
	case 2: return 2;
	default: return 0;
	}
	}

	static ulong Get_SDRAM_ChipSize(void)
	{
	switch (Get_PLD_SDRAM() & 0x0F) {
	case 0: return 16 * (1024*1024);
	case 1: return 32 * (1024*1024);
	case 2: return 8 * (1024*1024);
	case 3: return 8 * (1024*1024);
	default: return 0;
	}
	}
	static const char * Get_SDRAM_ChipGeom(void)
	{
	switch (Get_PLD_SDRAM() & 0x0F) {
	case 0: return "4Mx8x4";
	case 1: return "8Mx8x4";
	case 2: return "2Mx8x4";
	case 3: return "4Mx8x2";
	default: return "unknown";
	}
	}

	static void Show_VCMA9_Info(char board_name, char serial)
	{
	printf("Board: %s SN: %s PCB Rev: %c PLD(%d,%d)\n",
	board_name, serial, Get_Board_PCB(), Get_PLD_Version(), Get_PLD_Revision());
	printf("SDRAM: %d chips %s\n", Get_SDRAM_ChipNr(), Get_SDRAM_ChipGeom());
	}

	int dram_init(void)
	{
	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
	gd->bd->bi_dram[0].size = Get_SDRAM_ChipSize() * Get_SDRAM_ChipNr();

	return 0;
	}

	/* ------------------------------------------------------------------------- */

	/*
	* Check Board Identity:
	*/

	int checkboard(void)
	{
	char s[50];
	int i;
	backup_t b = (backup_t ) s;

	i = getenv_f("serial#", s, 32);
	if ((i < 0) \|\| strncmp (s, "VCMA9", 5)) {
	get_backup_values (b);
	if (strncmp (b->signature, "MPL\0", 4) != 0) {
	puts ("### No HW ID - assuming VCMA9");
	} else {
	b->serial_name[5] = 0;
	Show_VCMA9_Info(b->serial_name, &b->serial_name[6]);
	}
	} else {
	s[5] = 0;
	Show_VCMA9_Info(s, &s[6]);
	}
	/printf("\n");/
	return(0);
	}


	int last_stage_init(void)
	{
	checkboard();
	stdio_print_current_devices();
	check_env();
	return 0;
	}

	/***************************************************************************
	* some helping routines
	*/
	#if !CONFIG_USB_KEYBOARD
	int overwrite_console(void)
	{
	/* return TRUE if console should be overwritten */
	return 0;
	}
	#endif

	/************************************************************************
	* Print VCMA9 Info
	************************************************************************/
	void print_vcma9_info(void)
	{
	char s[50];
	int i;

	if ((i = getenv_f("serial#", s, 32)) < 0) {
	puts ("### No HW ID - assuming VCMA9");
	printf("i %d", i*24);
	} else {
	s[5] = 0;
	Show_VCMA9_Info(s, &s[6]);
	}
	}

	#ifdef CONFIG_CMD_NET
	int board_eth_init(bd_t *bis)
	{
	int rc = 0;
	#ifdef CONFIG_CS8900
	rc = cs8900_initialize(0, CONFIG_CS8900_BASE);
	#endif
	return rc;
	}
	#endif