board/amcc/makalu/cmd_pll.c - platform/external/u-boot - Gitiles

 /*
  * (C) Copyright 2000, 2001
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
  * 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
  *
  */

 /*
  * ehnus: change pll frequency.
  * Wed Sep  5 11:45:17 CST 2007
  * hsun@udtech.com.cn
  */


 #include <common.h>
 #include <config.h>
 #include <command.h>
 #include <i2c.h>

 #ifdef CONFIG_CMD_EEPROM

 #define EEPROM_CONF_OFFSET		0
 #define EEPROM_TEST_OFFSET		16
 #define EEPROM_SDSTP_PARAM		16

 #define PLL_NAME_MAX			12
 #define BUF_STEP			8

 /* eeprom_wirtes 8Byte per op. */
 #define EEPROM_ALTER_FREQ(freq)						\
 	do {								\
 		int __i;						\
 		for (__i = 0; __i < 2; __i++)				\
 			eeprom_write (CONFIG_SYS_I2C_EEPROM_ADDR,		\
 				      EEPROM_CONF_OFFSET + __i*BUF_STEP, \
 				      pll_select[freq],			\
 				      BUF_STEP + __i*BUF_STEP);		\
 	} while (0)

 #define PDEBUG
 #ifdef	PDEBUG
 #define PLL_DEBUG	pll_debug(EEPROM_CONF_OFFSET)
 #else
 #define PLL_DEBUG
 #endif

 typedef enum {
 	PLL_ebc20,
 	PLL_333,
 	PLL_4001,
 	PLL_4002,
 	PLL_533,
 	PLL_600,
 	PLL_666,	/* For now, kilauea can't support */
 	RCONF,
 	WTEST,
 	PLL_TOTAL
 } pll_freq_t;

 static const char
 pll_name[][PLL_NAME_MAX] = {
 	"PLL_ebc20",
 	"PLL_333",
 	"PLL_400@1",
 	"PLL_400@2",
 	"PLL_533",
 	"PLL_600",
 	"PLL_666",
 	"RCONF",
 	"WTEST",
 	""
 };

 /*
  * ehnus:
  */
 static uchar
 pll_select[][EEPROM_SDSTP_PARAM] = {
 	/* 0: CPU 333MHz EBC 20MHz, for test only */
 	{
 		0x8c, 0x12, 0xec, 0x12, 0x88, 0x00, 0x0a, 0x00,
 		0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00
 	},

 	/* 0: 333 */
 	{
 		0x8c, 0x12, 0xec, 0x12, 0x98, 0x00, 0x0a, 0x00,
 		0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00
 	},

 	/* 1: 400_266 */
 	{
 		0x8e, 0x0e, 0xe8, 0x13, 0x98, 0x00, 0x0a, 0x00,
 		0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00
 	},

 	/* 2: 400 */
 	{
 		0x8e, 0x0e, 0xe8, 0x12, 0x98, 0x00, 0x0a, 0x00,
 		0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00
 	},

 	/* 3: 533 */
 	{
 		0x8e, 0x43, 0x60, 0x13, 0x98, 0x00, 0x0a, 0x00,
 		0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00
 	},

 	/* 4: 600 */
 	{
 		0x8d, 0x02, 0x34, 0x13, 0x98, 0x00, 0x0a, 0x00,
 		0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00
 	},

 	/* 5: 666 */
 	{
 		0x8d, 0x03, 0x78, 0x13, 0x98, 0x00, 0x0a, 0x00,
 		0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00
 	},

 	{}
 };

 static uchar
 testbuf[EEPROM_SDSTP_PARAM] = {
 	0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
 	0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff
 };

 static void
 pll_debug(int off)
 {
 	int i;
 	uchar buffer[EEPROM_SDSTP_PARAM];

 	memset(buffer, 0, sizeof(buffer));
 	eeprom_read(CONFIG_SYS_I2C_EEPROM_ADDR, off,
 		    buffer, EEPROM_SDSTP_PARAM);

 	printf("Debug: SDSTP[0-3] at offset \"0x%02x\" lists as follows: \n", off);
 	for (i = 0; i < EEPROM_SDSTP_PARAM; i++)
 		printf("%02x ", buffer[i]);
 	printf("\n");
 }

 static void
 test_write(void)
 {
 	printf("Debug: test eeprom_write ... ");

 	/*
 	 * Write twice, 8 bytes per write
 	 */
 	eeprom_write (CONFIG_SYS_I2C_EEPROM_ADDR, EEPROM_TEST_OFFSET,
 		      testbuf, 8);
 	eeprom_write (CONFIG_SYS_I2C_EEPROM_ADDR, EEPROM_TEST_OFFSET+8,
 		      testbuf, 16);
 	printf("done\n");

 	pll_debug(EEPROM_TEST_OFFSET);
 }

 int
 do_pll_alter (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	char c = '\0';
 	pll_freq_t pll_freq;
 	if (argc < 2) {
 		cmd_usage(cmdtp);
 		goto ret;
 	}

 	for (pll_freq = PLL_ebc20; pll_freq < PLL_TOTAL; pll_freq++)
 		if (!strcmp(pll_name[pll_freq], argv[1]))
 			break;

 	switch (pll_freq) {
 	case PLL_ebc20:
 	case PLL_333:
 	case PLL_4001:
 	case PLL_4002:
 	case PLL_533:
 	case PLL_600:
 		EEPROM_ALTER_FREQ(pll_freq);
 		break;

 	case PLL_666:		/* not support */
 		printf("Choose this option will result in a boot failure."
 		       "\nContinue? (Y/N): ");

 		c = getc(); putc('\n');

 		if ((c == 'y') || (c == 'Y')) {
 			EEPROM_ALTER_FREQ(pll_freq);
 			break;
 		}
 		goto ret;

 	case RCONF:
 		pll_debug(EEPROM_CONF_OFFSET);
 		goto ret;
 	case WTEST:
 		printf("DEBUG: write test\n");
 		test_write();
 		goto ret;

 	default:
 		printf("Invalid options\n\n");
 		cmd_usage(cmdtp);
 		goto ret;
 	}

 	printf("PLL set to %s, "
 	       "reset the board to take effect\n", pll_name[pll_freq]);

 	PLL_DEBUG;
 ret:
 	return 0;
 }

 U_BOOT_CMD(
 	pllalter, CONFIG_SYS_MAXARGS, 1,        do_pll_alter,
 	"change pll frequence",
 	"pllalter <selection>      - change pll frequence \n\n\
 	** New freq take effect after reset. ** \n\
 	----------------------------------------------\n\
 	PLL_ebc20: Board: AMCC 405EX(r) Evaluation Board\n\
 	\t	Same as PLL_333	\n\
 	\t	except          \n\
 	\t	EBC: 20 MHz     \n\
 	----------------------------------------------\n\
 	PLL_333: Board: AMCC 405EX(r) Evaluation Board\n\
 	\t	VCO: 666 MHz  \n\
 	\t	CPU: 333 MHz  \n\
 	\t	PLB: 166 MHz  \n\
 	\t	OPB: 83 MHz   \n\
 	\t	DDR: 83 MHz   \n\
 	------------------------------------------------\n\
 	PLL_400@1: Board: AMCC 405EX(r) Evaluation Board\n\
 	\t	VCO: 800 MHz  \n\
 	\t	CPU: 400 MHz  \n\
 	\t	PLB: 133 MHz  \n\
 	\t	OPB: 66  MHz  \n\
 	\t	DDR: 133 MHz  \n\
 	------------------------------------------------\n\
 	PLL_400@2: Board: AMCC 405EX(r) Evaluation Board\n\
 	\t	VCO: 800 MHz  \n\
 	\t	CPU: 400 MHz  \n\
 	\t	PLB: 200 MHz  \n\
 	\t	OPB: 100 MHz  \n\
 	\t	DDR: 200 MHz  \n\
 	----------------------------------------------\n\
 	PLL_533: Board: AMCC 405EX(r) Evaluation Board\n\
 	\t	VCO: 1066 MHz  \n\
 	\t	CPU: 533  MHz  \n\
 	\t	PLB: 177  MHz  \n\
 	\t	OPB: 88   MHz  \n\
 	\t	DDR: 177  MHz  \n\
 	----------------------------------------------\n\
 	PLL_600: Board: AMCC 405EX(r) Evaluation Board\n\
 	\t	VCO: 1200 MHz  \n\
 	\t	CPU: 600  MHz  \n\
 	\t	PLB: 200  MHz  \n\
 	\t	OPB: 100  MHz  \n\
 	\t	DDR: 200  MHz  \n\
 	----------------------------------------------\n\
 	PLL_666: Board: AMCC 405EX(r) Evaluation Board\n\
 	\t	VCO: 1333 MHz  \n\
 	\t	CPU: 666  MHz  \n\
 	\t	PLB: 166  MHz  \n\
 	\t	OPB: 83   MHz  \n\
 	\t	DDR: 166  MHz  \n\
 	-----------------------------------------------\n\
 	RCONF: Read current eeprom configuration.      \n\
 	-----------------------------------------------\n\
 	WTEST: Test EEPROM write with predefined values\n\
 	-----------------------------------------------"
 );

 #endif	/* CONFIG_CMD_EEPROM */
	/*
	* (C) Copyright 2000, 2001
	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	*
	* 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
	*
	*/

	/*
	* ehnus: change pll frequency.
	* Wed Sep 5 11:45:17 CST 2007
	* hsun@udtech.com.cn
	*/


	#include <common.h>
	#include <config.h>
	#include <command.h>
	#include <i2c.h>

	#ifdef CONFIG_CMD_EEPROM

	#define EEPROM_CONF_OFFSET 0
	#define EEPROM_TEST_OFFSET 16
	#define EEPROM_SDSTP_PARAM 16

	#define PLL_NAME_MAX 12
	#define BUF_STEP 8

	/* eeprom_wirtes 8Byte per op. */
	#define EEPROM_ALTER_FREQ(freq) \
	do { \
	int __i; \
	for (__i = 0; __i < 2; __i++) \
	eeprom_write (CONFIG_SYS_I2C_EEPROM_ADDR, \
	EEPROM_CONF_OFFSET + __i*BUF_STEP, \
	pll_select[freq], \
	BUF_STEP + __i*BUF_STEP); \
	} while (0)

	#define PDEBUG
	#ifdef PDEBUG
	#define PLL_DEBUG pll_debug(EEPROM_CONF_OFFSET)
	#else
	#define PLL_DEBUG
	#endif

	typedef enum {
	PLL_ebc20,
	PLL_333,
	PLL_4001,
	PLL_4002,
	PLL_533,
	PLL_600,
	PLL_666, /* For now, kilauea can't support */
	RCONF,
	WTEST,
	PLL_TOTAL
	} pll_freq_t;

	static const char
	pll_name[][PLL_NAME_MAX] = {
	"PLL_ebc20",
	"PLL_333",
	"PLL_400@1",
	"PLL_400@2",
	"PLL_533",
	"PLL_600",
	"PLL_666",
	"RCONF",
	"WTEST",
	""
	};

	/*
	* ehnus:
	*/
	static uchar
	pll_select[][EEPROM_SDSTP_PARAM] = {
	/* 0: CPU 333MHz EBC 20MHz, for test only */
	{
	0x8c, 0x12, 0xec, 0x12, 0x88, 0x00, 0x0a, 0x00,
	0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00
	},

	/* 0: 333 */
	{
	0x8c, 0x12, 0xec, 0x12, 0x98, 0x00, 0x0a, 0x00,
	0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00
	},

	/* 1: 400_266 */
	{
	0x8e, 0x0e, 0xe8, 0x13, 0x98, 0x00, 0x0a, 0x00,
	0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00
	},

	/* 2: 400 */
	{
	0x8e, 0x0e, 0xe8, 0x12, 0x98, 0x00, 0x0a, 0x00,
	0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00
	},

	/* 3: 533 */
	{
	0x8e, 0x43, 0x60, 0x13, 0x98, 0x00, 0x0a, 0x00,
	0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00
	},

	/* 4: 600 */
	{
	0x8d, 0x02, 0x34, 0x13, 0x98, 0x00, 0x0a, 0x00,
	0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00
	},

	/* 5: 666 */
	{
	0x8d, 0x03, 0x78, 0x13, 0x98, 0x00, 0x0a, 0x00,
	0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00
	},

	{}
	};

	static uchar
	testbuf[EEPROM_SDSTP_PARAM] = {
	0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
	0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff
	};

	static void
	pll_debug(int off)
	{
	int i;
	uchar buffer[EEPROM_SDSTP_PARAM];

	memset(buffer, 0, sizeof(buffer));
	eeprom_read(CONFIG_SYS_I2C_EEPROM_ADDR, off,
	buffer, EEPROM_SDSTP_PARAM);

	printf("Debug: SDSTP[0-3] at offset \"0x%02x\" lists as follows: \n", off);
	for (i = 0; i < EEPROM_SDSTP_PARAM; i++)
	printf("%02x ", buffer[i]);
	printf("\n");
	}

	static void
	test_write(void)
	{
	printf("Debug: test eeprom_write ... ");

	/*
	* Write twice, 8 bytes per write
	*/
	eeprom_write (CONFIG_SYS_I2C_EEPROM_ADDR, EEPROM_TEST_OFFSET,
	testbuf, 8);
	eeprom_write (CONFIG_SYS_I2C_EEPROM_ADDR, EEPROM_TEST_OFFSET+8,
	testbuf, 16);
	printf("done\n");

	pll_debug(EEPROM_TEST_OFFSET);
	}

	int
	do_pll_alter (cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	{
	char c = '\0';
	pll_freq_t pll_freq;
	if (argc < 2) {
	cmd_usage(cmdtp);
	goto ret;
	}

	for (pll_freq = PLL_ebc20; pll_freq < PLL_TOTAL; pll_freq++)
	if (!strcmp(pll_name[pll_freq], argv[1]))
	break;

	switch (pll_freq) {
	case PLL_ebc20:
	case PLL_333:
	case PLL_4001:
	case PLL_4002:
	case PLL_533:
	case PLL_600:
	EEPROM_ALTER_FREQ(pll_freq);
	break;

	case PLL_666: /* not support */
	printf("Choose this option will result in a boot failure."
	"\nContinue? (Y/N): ");

	c = getc(); putc('\n');

	if ((c == 'y') \|\| (c == 'Y')) {
	EEPROM_ALTER_FREQ(pll_freq);
	break;
	}
	goto ret;

	case RCONF:
	pll_debug(EEPROM_CONF_OFFSET);
	goto ret;
	case WTEST:
	printf("DEBUG: write test\n");
	test_write();
	goto ret;

	default:
	printf("Invalid options\n\n");
	cmd_usage(cmdtp);
	goto ret;
	}

	printf("PLL set to %s, "
	"reset the board to take effect\n", pll_name[pll_freq]);

	PLL_DEBUG;
	ret:
	return 0;
	}

	U_BOOT_CMD(
	pllalter, CONFIG_SYS_MAXARGS, 1, do_pll_alter,
	"change pll frequence",
	"pllalter <selection> - change pll frequence \n\n\
	New freq take effect after reset. \n\
	----------------------------------------------\n\
	PLL_ebc20: Board: AMCC 405EX(r) Evaluation Board\n\
	\t Same as PLL_333 \n\
	\t except \n\
	\t EBC: 20 MHz \n\
	----------------------------------------------\n\
	PLL_333: Board: AMCC 405EX(r) Evaluation Board\n\
	\t VCO: 666 MHz \n\
	\t CPU: 333 MHz \n\
	\t PLB: 166 MHz \n\
	\t OPB: 83 MHz \n\
	\t DDR: 83 MHz \n\
	------------------------------------------------\n\
	PLL_400@1: Board: AMCC 405EX(r) Evaluation Board\n\
	\t VCO: 800 MHz \n\
	\t CPU: 400 MHz \n\
	\t PLB: 133 MHz \n\
	\t OPB: 66 MHz \n\
	\t DDR: 133 MHz \n\
	------------------------------------------------\n\
	PLL_400@2: Board: AMCC 405EX(r) Evaluation Board\n\
	\t VCO: 800 MHz \n\
	\t CPU: 400 MHz \n\
	\t PLB: 200 MHz \n\
	\t OPB: 100 MHz \n\
	\t DDR: 200 MHz \n\
	----------------------------------------------\n\
	PLL_533: Board: AMCC 405EX(r) Evaluation Board\n\
	\t VCO: 1066 MHz \n\
	\t CPU: 533 MHz \n\
	\t PLB: 177 MHz \n\
	\t OPB: 88 MHz \n\
	\t DDR: 177 MHz \n\
	----------------------------------------------\n\
	PLL_600: Board: AMCC 405EX(r) Evaluation Board\n\
	\t VCO: 1200 MHz \n\
	\t CPU: 600 MHz \n\
	\t PLB: 200 MHz \n\
	\t OPB: 100 MHz \n\
	\t DDR: 200 MHz \n\
	----------------------------------------------\n\
	PLL_666: Board: AMCC 405EX(r) Evaluation Board\n\
	\t VCO: 1333 MHz \n\
	\t CPU: 666 MHz \n\
	\t PLB: 166 MHz \n\
	\t OPB: 83 MHz \n\
	\t DDR: 166 MHz \n\
	-----------------------------------------------\n\
	RCONF: Read current eeprom configuration. \n\
	-----------------------------------------------\n\
	WTEST: Test EEPROM write with predefined values\n\
	-----------------------------------------------"
	);

	#endif /* CONFIG_CMD_EEPROM */