[J-u-boot.git] / board / freescale / common / pixis.c

/*
 * Copyright 2006 Freescale Semiconductor
 * Jeff Brown
 * Srikanth Srinivasan ([email protected])
 *
 * 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 <command.h>
#include <watchdog.h>
#include <asm/cache.h>
#include <asm/io.h>

#include "pixis.h"


static ulong strfractoint(uchar *strptr);


/*
 * Simple board reset.
 */
void pixis_reset(void)
{
    out8(PIXIS_BASE + PIXIS_RST, 0);
}


/*
 * Per table 27, page 58 of MPC8641HPCN spec.
 */
int set_px_sysclk(ulong sysclk)
{
	u8 sysclk_s, sysclk_r, sysclk_v, vclkh, vclkl, sysclk_aux;

	switch (sysclk) {
	case 33:
		sysclk_s = 0x04;
		sysclk_r = 0x04;
		sysclk_v = 0x07;
		sysclk_aux = 0x00;
		break;
	case 40:
		sysclk_s = 0x01;
		sysclk_r = 0x1F;
		sysclk_v = 0x20;
		sysclk_aux = 0x01;
		break;
	case 50:
		sysclk_s = 0x01;
		sysclk_r = 0x1F;
		sysclk_v = 0x2A;
		sysclk_aux = 0x02;
		break;
	case 66:
		sysclk_s = 0x01;
		sysclk_r = 0x04;
		sysclk_v = 0x04;
		sysclk_aux = 0x03;
		break;
	case 83:
		sysclk_s = 0x01;
		sysclk_r = 0x1F;
		sysclk_v = 0x4B;
		sysclk_aux = 0x04;
		break;
	case 100:
		sysclk_s = 0x01;
		sysclk_r = 0x1F;
		sysclk_v = 0x5C;
		sysclk_aux = 0x05;
		break;
	case 134:
		sysclk_s = 0x06;
		sysclk_r = 0x1F;
		sysclk_v = 0x3B;
		sysclk_aux = 0x06;
		break;
	case 166:
		sysclk_s = 0x06;
		sysclk_r = 0x1F;
		sysclk_v = 0x4B;
		sysclk_aux = 0x07;
		break;
	default:
		printf("Unsupported SYSCLK frequency.\n");
		return 0;
	}

	vclkh = (sysclk_s << 5) | sysclk_r;
	vclkl = sysclk_v;

	out8(PIXIS_BASE + PIXIS_VCLKH, vclkh);
	out8(PIXIS_BASE + PIXIS_VCLKL, vclkl);

	out8(PIXIS_BASE + PIXIS_AUX, sysclk_aux);

	return 1;
}


int set_px_mpxpll(ulong mpxpll)
{
	u8 tmp;
	u8 val;

	switch (mpxpll) {
	case 2:
	case 4:
	case 6:
	case 8:
	case 10:
	case 12:
	case 14:
	case 16:
		val = (u8) mpxpll;
		break;
	default:
		printf("Unsupported MPXPLL ratio.\n");
		return 0;
	}

	tmp = in8(PIXIS_BASE + PIXIS_VSPEED1);
	tmp = (tmp & 0xF0) | (val & 0x0F);
	out8(PIXIS_BASE + PIXIS_VSPEED1, tmp);

	return 1;
}


int set_px_corepll(ulong corepll)
{
	u8 tmp;
	u8 val;

	switch ((int)corepll) {
	case 20:
		val = 0x08;
		break;
	case 25:
		val = 0x0C;
		break;
	case 30:
		val = 0x10;
		break;
	case 35:
		val = 0x1C;
		break;
	case 40:
		val = 0x14;
		break;
	case 45:
		val = 0x0E;
		break;
	default:
		printf("Unsupported COREPLL ratio.\n");
		return 0;
	}

	tmp = in8(PIXIS_BASE + PIXIS_VSPEED0);
	tmp = (tmp & 0xE0) | (val & 0x1F);
	out8(PIXIS_BASE + PIXIS_VSPEED0, tmp);

	return 1;
}


void read_from_px_regs(int set)
{
	u8 mask = 0x1C;	/* COREPLL, MPXPLL, SYSCLK controlled by PIXIS */
	u8 tmp = in8(PIXIS_BASE + PIXIS_VCFGEN0);

	if (set)
		tmp = tmp | mask;
	else
		tmp = tmp & ~mask;
	out8(PIXIS_BASE + PIXIS_VCFGEN0, tmp);
}


void read_from_px_regs_altbank(int set)
{
	u8 mask = 0x04;	/* FLASHBANK and FLASHMAP controlled by PIXIS */
	u8 tmp = in8(PIXIS_BASE + PIXIS_VCFGEN1);

	if (set)
		tmp = tmp | mask;
	else
		tmp = tmp & ~mask;
	out8(PIXIS_BASE + PIXIS_VCFGEN1, tmp);
}

#ifndef CONFIG_SYS_PIXIS_VBOOT_MASK
#define CONFIG_SYS_PIXIS_VBOOT_MASK	(0x40)
#endif

void clear_altbank(void)
{
	u8 tmp;

	tmp = in8(PIXIS_BASE + PIXIS_VBOOT);
	tmp &= ~CONFIG_SYS_PIXIS_VBOOT_MASK;

	out8(PIXIS_BASE + PIXIS_VBOOT, tmp);
}


void set_altbank(void)
{
	u8 tmp;

	tmp = in8(PIXIS_BASE + PIXIS_VBOOT);
	tmp |= CONFIG_SYS_PIXIS_VBOOT_MASK;

	out8(PIXIS_BASE + PIXIS_VBOOT, tmp);
}


void set_px_go(void)
{
	u8 tmp;

	tmp = in8(PIXIS_BASE + PIXIS_VCTL);
	tmp = tmp & 0x1E;			/* clear GO bit */
	out8(PIXIS_BASE + PIXIS_VCTL, tmp);

	tmp = in8(PIXIS_BASE + PIXIS_VCTL);
	tmp = tmp | 0x01;	/* set GO bit - start reset sequencer */
	out8(PIXIS_BASE + PIXIS_VCTL, tmp);
}


void set_px_go_with_watchdog(void)
{
	u8 tmp;

	tmp = in8(PIXIS_BASE + PIXIS_VCTL);
	tmp = tmp & 0x1E;
	out8(PIXIS_BASE + PIXIS_VCTL, tmp);

	tmp = in8(PIXIS_BASE + PIXIS_VCTL);
	tmp = tmp | 0x09;
	out8(PIXIS_BASE + PIXIS_VCTL, tmp);
}


int pixis_disable_watchdog_cmd(cmd_tbl_t *cmdtp,
			       int flag, int argc, char *argv[])
{
	u8 tmp;

	tmp = in8(PIXIS_BASE + PIXIS_VCTL);
	tmp = tmp & 0x1E;
	out8(PIXIS_BASE + PIXIS_VCTL, tmp);

	/* setting VCTL[WDEN] to 0 to disable watch dog */
	tmp = in8(PIXIS_BASE + PIXIS_VCTL);
	tmp &= ~0x08;
	out8(PIXIS_BASE + PIXIS_VCTL, tmp);

	return 0;
}

U_BOOT_CMD(
	diswd, 1, 0, pixis_disable_watchdog_cmd,
	"Disable watchdog timer",
	""
);

#ifdef CONFIG_PIXIS_SGMII_CMD
int pixis_set_sgmii(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	int which_tsec = -1;
	uchar mask;
	uchar switch_mask;

	if (argc > 2)
		if (strcmp(argv[1], "all") != 0)
			which_tsec = simple_strtoul(argv[1], NULL, 0);

	switch (which_tsec) {
#ifdef CONFIG_TSEC1
	case 1:
		mask = PIXIS_VSPEED2_TSEC1SER;
		switch_mask = PIXIS_VCFGEN1_TSEC1SER;
		break;
#endif
#ifdef CONFIG_TSEC2
	case 2:
		mask = PIXIS_VSPEED2_TSEC2SER;
		switch_mask = PIXIS_VCFGEN1_TSEC2SER;
		break;
#endif
#ifdef CONFIG_TSEC3
	case 3:
		mask = PIXIS_VSPEED2_TSEC3SER;
		switch_mask = PIXIS_VCFGEN1_TSEC3SER;
		break;
#endif
#ifdef CONFIG_TSEC4
	case 4:
		mask = PIXIS_VSPEED2_TSEC4SER;
		switch_mask = PIXIS_VCFGEN1_TSEC4SER;
		break;
#endif
	default:
		mask = PIXIS_VSPEED2_MASK;
		switch_mask = PIXIS_VCFGEN1_MASK;
		break;
	}

	/* Toggle whether the switches or FPGA control the settings */
	if (!strcmp(argv[argc - 1], "switch"))
		clrbits_8((unsigned char *)PIXIS_BASE + PIXIS_VCFGEN1,
			switch_mask);
	else
		setbits_8((unsigned char *)PIXIS_BASE + PIXIS_VCFGEN1,
			switch_mask);

	/* If it's not the switches, enable or disable SGMII, as specified */
	if (!strcmp(argv[argc - 1], "on"))
		clrbits_8((unsigned char *)PIXIS_BASE + PIXIS_VSPEED2, mask);
	else if (!strcmp(argv[argc - 1], "off"))
		setbits_8((unsigned char *)PIXIS_BASE + PIXIS_VSPEED2, mask);

	return 0;
}

U_BOOT_CMD(
	pixis_set_sgmii, CONFIG_SYS_MAXARGS, 1, pixis_set_sgmii,
	"pixis_set_sgmii"
	" - Enable or disable SGMII mode for a given TSEC \n",
	"\npixis_set_sgmii [TSEC num] <on|off|switch>\n"
	"    TSEC num: 1,2,3,4 or 'all'.  'all' is default.\n"
	"    on - enables SGMII\n"
	"    off - disables SGMII\n"
	"    switch - use switch settings"
);
#endif

/*
 * This function takes the non-integral cpu:mpx pll ratio
 * and converts it to an integer that can be used to assign
 * FPGA register values.
 * input: strptr i.e. argv[2]
 */

static ulong strfractoint(uchar *strptr)
{
	int i, j, retval;
	int mulconst;
	int intarr_len = 0, decarr_len = 0, no_dec = 0;
	ulong intval = 0, decval = 0;
	uchar intarr[3], decarr[3];

	/* Assign the integer part to intarr[]
	 * If there is no decimal point i.e.
	 * if the ratio is an integral value
	 * simply create the intarr.
	 */
	i = 0;
	while (strptr[i] != '.') {
		if (strptr[i] == 0) {
			no_dec = 1;
			break;
		}
		intarr[i] = strptr[i];
		i++;
	}

	/* Assign length of integer part to intarr_len. */
	intarr_len = i;
	intarr[i] = '\0';

	if (no_dec) {
		/* Currently needed only for single digit corepll ratios */
		mulconst = 10;
		decval = 0;
	} else {
		j = 0;
		i++;		/* Skipping the decimal point */
		while ((strptr[i] >= '0') && (strptr[i] <= '9')) {
			decarr[j] = strptr[i];
			i++;
			j++;
		}

		decarr_len = j;
		decarr[j] = '\0';

		mulconst = 1;
		for (i = 0; i < decarr_len; i++)
			mulconst *= 10;
		decval = simple_strtoul((char *)decarr, NULL, 10);
	}

	intval = simple_strtoul((char *)intarr, NULL, 10);
	intval = intval * mulconst;

	retval = intval + decval;

	return retval;
}


int
pixis_reset_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	unsigned int i;
	char *p_cf = NULL;
	char *p_cf_sysclk = NULL;
	char *p_cf_corepll = NULL;
	char *p_cf_mpxpll = NULL;
	char *p_altbank = NULL;
	char *p_wd = NULL;
	unsigned int unknown_param = 0;

	/*
	 * No args is a simple reset request.
	 */
	if (argc <= 1) {
		pixis_reset();
		/* not reached */
	}

	for (i = 1; i < argc; i++) {
		if (strcmp(argv[i], "cf") == 0) {
			p_cf = argv[i];
			if (i + 3 >= argc) {
				break;
			}
			p_cf_sysclk = argv[i+1];
			p_cf_corepll = argv[i+2];
			p_cf_mpxpll = argv[i+3];
			i += 3;
			continue;
		}

		if (strcmp(argv[i], "altbank") == 0) {
			p_altbank = argv[i];
			continue;
		}

		if (strcmp(argv[i], "wd") == 0) {
			p_wd = argv[i];
			continue;
		}

		unknown_param = 1;
	}

	/*
	 * Check that cf has all required parms
	 */
	if ((p_cf && !(p_cf_sysclk && p_cf_corepll && p_cf_mpxpll))
	    ||	unknown_param) {
#ifdef CONFIG_SYS_LONGHELP
		puts(cmdtp->help);
#endif
		return 1;
	}

	/*
	 * PIXIS seems to be sensitive to the ordering of
	 * the registers that are touched.
	 */
	read_from_px_regs(0);

	if (p_altbank) {
		read_from_px_regs_altbank(0);
	}
	clear_altbank();

	/*
	 * Clock configuration specified.
	 */
	if (p_cf) {
		unsigned long sysclk;
		unsigned long corepll;
		unsigned long mpxpll;

		sysclk = simple_strtoul(p_cf_sysclk, NULL, 10);
		corepll = strfractoint((uchar *) p_cf_corepll);
		mpxpll = simple_strtoul(p_cf_mpxpll, NULL, 10);

		if (!(set_px_sysclk(sysclk)
		      && set_px_corepll(corepll)
		      && set_px_mpxpll(mpxpll))) {
#ifdef CONFIG_SYS_LONGHELP
			puts(cmdtp->help);
#endif
			return 1;
		}
		read_from_px_regs(1);
	}

	/*
	 * Altbank specified
	 *
	 * NOTE CHANGE IN BEHAVIOR: previous code would default
	 * to enabling watchdog if altbank is specified.
	 * Now the watchdog must be enabled explicitly using 'wd'.
	 */
	if (p_altbank) {
		set_altbank();
		read_from_px_regs_altbank(1);
	}

	/*
	 * Reset with watchdog specified.
	 */
	if (p_wd) {
		set_px_go_with_watchdog();
	} else {
		set_px_go();
	}

	/*
	 * Shouldn't be reached.
	 */
	return 0;
}


U_BOOT_CMD(
	pixis_reset, CONFIG_SYS_MAXARGS, 1, pixis_reset_cmd,
	"Reset the board using the FPGA sequencer",
	"    pixis_reset\n"
	"    pixis_reset [altbank]\n"
	"    pixis_reset altbank wd\n"
	"    pixis_reset altbank cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>\n"
	"    pixis_reset cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>"
);
Commit	Line	Data
126aa70f JL	1	/*
	2	* Copyright 2006 Freescale Semiconductor
	3	* Jeff Brown
	4	* Srikanth Srinivasan ([email protected])
	5	*
	6	* See file CREDITS for list of people who contributed to this
	7	* project.
	8	*
	9	* This program is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU General Public License as
	11	* published by the Free Software Foundation; either version 2 of
	12	* the License, or (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	22	* MA 02111-1307 USA
	23	*/
	24
	25	#include <common.h>
126aa70f	26	#include <command.h>
3d98b858	27	#include <watchdog.h>
314d5b6c	28	#include <asm/cache.h>
5a8a163a	29	#include <asm/io.h>
ad8f8687	30
126aa70f JL	31	#include "pixis.h"
	32
	33
3d98b858 HW	34	static ulong strfractoint(uchar *strptr);
	35
	36
	37	/*
	38	* Simple board reset.
	39	*/
	40	void pixis_reset(void)
	41	{
	42	out8(PIXIS_BASE + PIXIS_RST, 0);
	43	}
	44
	45
126aa70f JL	46	/*
	47	* Per table 27, page 58 of MPC8641HPCN spec.
	48	*/
	49	int set_px_sysclk(ulong sysclk)
	50	{
	51	u8 sysclk_s, sysclk_r, sysclk_v, vclkh, vclkl, sysclk_aux;
	52
	53	switch (sysclk) {
	54	case 33:
	55	sysclk_s = 0x04;
	56	sysclk_r = 0x04;
	57	sysclk_v = 0x07;
	58	sysclk_aux = 0x00;
	59	break;
	60	case 40:
	61	sysclk_s = 0x01;
	62	sysclk_r = 0x1F;
	63	sysclk_v = 0x20;
	64	sysclk_aux = 0x01;
	65	break;
	66	case 50:
	67	sysclk_s = 0x01;
	68	sysclk_r = 0x1F;
	69	sysclk_v = 0x2A;
	70	sysclk_aux = 0x02;
	71	break;
	72	case 66:
	73	sysclk_s = 0x01;
	74	sysclk_r = 0x04;
	75	sysclk_v = 0x04;
	76	sysclk_aux = 0x03;
	77	break;
	78	case 83:
	79	sysclk_s = 0x01;
	80	sysclk_r = 0x1F;
	81	sysclk_v = 0x4B;
	82	sysclk_aux = 0x04;
	83	break;
	84	case 100:
	85	sysclk_s = 0x01;
	86	sysclk_r = 0x1F;
	87	sysclk_v = 0x5C;
	88	sysclk_aux = 0x05;
	89	break;
	90	case 134:
	91	sysclk_s = 0x06;
	92	sysclk_r = 0x1F;
	93	sysclk_v = 0x3B;
	94	sysclk_aux = 0x06;
	95	break;
	96	case 166:
	97	sysclk_s = 0x06;
	98	sysclk_r = 0x1F;
	99	sysclk_v = 0x4B;
	100	sysclk_aux = 0x07;
	101	break;
	102	default:
	103	printf("Unsupported SYSCLK frequency.\n");
	104	return 0;
	105	}
	106
80e955c7	107	vclkh = (sysclk_s << 5) \| sysclk_r;
126aa70f JL	108	vclkl = sysclk_v;
	109
	110	out8(PIXIS_BASE + PIXIS_VCLKH, vclkh);
	111	out8(PIXIS_BASE + PIXIS_VCLKL, vclkl);
	112
80e955c7	113	out8(PIXIS_BASE + PIXIS_AUX, sysclk_aux);
126aa70f JL	114
	115	return 1;
	116	}
	117
	118
	119	int set_px_mpxpll(ulong mpxpll)
	120	{
	121	u8 tmp;
	122	u8 val;
	123
	124	switch (mpxpll) {
	125	case 2:
	126	case 4:
	127	case 6:
	128	case 8:
	129	case 10:
	130	case 12:
	131	case 14:
	132	case 16:
80e955c7	133	val = (u8) mpxpll;
126aa70f JL	134	break;
	135	default:
	136	printf("Unsupported MPXPLL ratio.\n");
	137	return 0;
	138	}
	139
	140	tmp = in8(PIXIS_BASE + PIXIS_VSPEED1);
	141	tmp = (tmp & 0xF0) \| (val & 0x0F);
	142	out8(PIXIS_BASE + PIXIS_VSPEED1, tmp);
	143
	144	return 1;
	145	}
	146
	147
	148	int set_px_corepll(ulong corepll)
	149	{
	150	u8 tmp;
	151	u8 val;
	152
	153	switch ((int)corepll) {
	154	case 20:
	155	val = 0x08;
	156	break;
	157	case 25:
	158	val = 0x0C;
	159	break;
	160	case 30:
	161	val = 0x10;
	162	break;
	163	case 35:
	164	val = 0x1C;
	165	break;
	166	case 40:
	167	val = 0x14;
	168	break;
	169	case 45:
	170	val = 0x0E;
	171	break;
	172	default:
	173	printf("Unsupported COREPLL ratio.\n");
	174	return 0;
	175	}
	176
	177	tmp = in8(PIXIS_BASE + PIXIS_VSPEED0);
	178	tmp = (tmp & 0xE0) \| (val & 0x1F);
	179	out8(PIXIS_BASE + PIXIS_VSPEED0, tmp);
	180
	181	return 1;
	182	}
	183
	184
	185	void read_from_px_regs(int set)
	186	{
16c3cde0	187	u8 mask = 0x1C; /* COREPLL, MPXPLL, SYSCLK controlled by PIXIS */
126aa70f JL	188	u8 tmp = in8(PIXIS_BASE + PIXIS_VCFGEN0);
	189
	190	if (set)
	191	tmp = tmp \| mask;
	192	else
	193	tmp = tmp & ~mask;
	194	out8(PIXIS_BASE + PIXIS_VCFGEN0, tmp);
	195	}
	196
	197
	198	void read_from_px_regs_altbank(int set)
	199	{
16c3cde0	200	u8 mask = 0x04; /* FLASHBANK and FLASHMAP controlled by PIXIS */
126aa70f JL	201	u8 tmp = in8(PIXIS_BASE + PIXIS_VCFGEN1);
	202
	203	if (set)
	204	tmp = tmp \| mask;
	205	else
	206	tmp = tmp & ~mask;
	207	out8(PIXIS_BASE + PIXIS_VCFGEN1, tmp);
	208	}
	209
6d0f6bcf JCPV	210	#ifndef CONFIG_SYS_PIXIS_VBOOT_MASK
6d0f6bcf JCPV	211	#define CONFIG_SYS_PIXIS_VBOOT_MASK (0x40)
db74b3c1	212	#endif
126aa70f	213
16c3cde0 JY	214	void clear_altbank(void)
	215	{
	216	u8 tmp;
	217
	218	tmp = in8(PIXIS_BASE + PIXIS_VBOOT);
6d0f6bcf	219	tmp &= ~CONFIG_SYS_PIXIS_VBOOT_MASK;
16c3cde0 JY	220
	221	out8(PIXIS_BASE + PIXIS_VBOOT, tmp);
	222	}
	223
	224
126aa70f JL	225	void set_altbank(void)
	226	{
	227	u8 tmp;
	228
	229	tmp = in8(PIXIS_BASE + PIXIS_VBOOT);
6d0f6bcf	230	tmp \|= CONFIG_SYS_PIXIS_VBOOT_MASK;
126aa70f JL	231
	232	out8(PIXIS_BASE + PIXIS_VBOOT, tmp);
	233	}
	234
	235
	236	void set_px_go(void)
	237	{
	238	u8 tmp;
	239
	240	tmp = in8(PIXIS_BASE + PIXIS_VCTL);
16c3cde0	241	tmp = tmp & 0x1E; /* clear GO bit */
126aa70f JL	242	out8(PIXIS_BASE + PIXIS_VCTL, tmp);
	243
	244	tmp = in8(PIXIS_BASE + PIXIS_VCTL);
16c3cde0	245	tmp = tmp \| 0x01; /* set GO bit - start reset sequencer */
126aa70f JL	246	out8(PIXIS_BASE + PIXIS_VCTL, tmp);
	247	}
	248
	249
	250	void set_px_go_with_watchdog(void)
	251	{
	252	u8 tmp;
	253
	254	tmp = in8(PIXIS_BASE + PIXIS_VCTL);
	255	tmp = tmp & 0x1E;
	256	out8(PIXIS_BASE + PIXIS_VCTL, tmp);
	257
	258	tmp = in8(PIXIS_BASE + PIXIS_VCTL);
	259	tmp = tmp \| 0x09;
	260	out8(PIXIS_BASE + PIXIS_VCTL, tmp);
	261	}
	262
	263
3d98b858 HW	264	int pixis_disable_watchdog_cmd(cmd_tbl_t *cmdtp,
3d98b858 HW	265	int flag, int argc, char *argv[])
126aa70f JL	266	{
	267	u8 tmp;
	268
	269	tmp = in8(PIXIS_BASE + PIXIS_VCTL);
	270	tmp = tmp & 0x1E;
	271	out8(PIXIS_BASE + PIXIS_VCTL, tmp);
	272
	273	/* setting VCTL[WDEN] to 0 to disable watch dog */
	274	tmp = in8(PIXIS_BASE + PIXIS_VCTL);
80e955c7	275	tmp &= ~0x08;
126aa70f JL	276	out8(PIXIS_BASE + PIXIS_VCTL, tmp);
	277
	278	return 0;
	279	}
	280
126aa70f	281	U_BOOT_CMD(
a89c33db WD	282	diswd, 1, 0, pixis_disable_watchdog_cmd,
	283	"Disable watchdog timer",
	284	""
	285	);
126aa70f	286
bff188ba	287	#ifdef CONFIG_PIXIS_SGMII_CMD
5a8a163a AF	288	int pixis_set_sgmii(cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	289	{
	290	int which_tsec = -1;
	291	uchar mask;
	292	uchar switch_mask;
	293
	294	if (argc > 2)
	295	if (strcmp(argv[1], "all") != 0)
	296	which_tsec = simple_strtoul(argv[1], NULL, 0);
	297
	298	switch (which_tsec) {
bff188ba	299	#ifdef CONFIG_TSEC1
5a8a163a AF	300	case 1:
	301	mask = PIXIS_VSPEED2_TSEC1SER;
	302	switch_mask = PIXIS_VCFGEN1_TSEC1SER;
	303	break;
bff188ba LY	304	#endif
	305	#ifdef CONFIG_TSEC2
	306	case 2:
	307	mask = PIXIS_VSPEED2_TSEC2SER;
	308	switch_mask = PIXIS_VCFGEN1_TSEC2SER;
	309	break;
	310	#endif
	311	#ifdef CONFIG_TSEC3
5a8a163a AF	312	case 3:
	313	mask = PIXIS_VSPEED2_TSEC3SER;
	314	switch_mask = PIXIS_VCFGEN1_TSEC3SER;
	315	break;
bff188ba LY	316	#endif
	317	#ifdef CONFIG_TSEC4
	318	case 4:
	319	mask = PIXIS_VSPEED2_TSEC4SER;
	320	switch_mask = PIXIS_VCFGEN1_TSEC4SER;
	321	break;
	322	#endif
5a8a163a	323	default:
bff188ba LY	324	mask = PIXIS_VSPEED2_MASK;
bff188ba LY	325	switch_mask = PIXIS_VCFGEN1_MASK;
5a8a163a AF	326	break;
	327	}
	328
	329	/* Toggle whether the switches or FPGA control the settings */
	330	if (!strcmp(argv[argc - 1], "switch"))
	331	clrbits_8((unsigned char *)PIXIS_BASE + PIXIS_VCFGEN1,
	332	switch_mask);
	333	else
	334	setbits_8((unsigned char *)PIXIS_BASE + PIXIS_VCFGEN1,
	335	switch_mask);
	336
	337	/* If it's not the switches, enable or disable SGMII, as specified */
	338	if (!strcmp(argv[argc - 1], "on"))
	339	clrbits_8((unsigned char *)PIXIS_BASE + PIXIS_VSPEED2, mask);
	340	else if (!strcmp(argv[argc - 1], "off"))
	341	setbits_8((unsigned char *)PIXIS_BASE + PIXIS_VSPEED2, mask);
	342
	343	return 0;
	344	}
	345
	346	U_BOOT_CMD(
a89c33db WD	347	pixis_set_sgmii, CONFIG_SYS_MAXARGS, 1, pixis_set_sgmii,
	348	"pixis_set_sgmii"
	349	" - Enable or disable SGMII mode for a given TSEC \n",
	350	"\npixis_set_sgmii [TSEC num] <on\|off\|switch>\n"
	351	" TSEC num: 1,2,3,4 or 'all'. 'all' is default.\n"
	352	" on - enables SGMII\n"
	353	" off - disables SGMII\n"
	354	" switch - use switch settings"
	355	);
5a8a163a AF	356	#endif
5a8a163a AF	357
126aa70f JL	358	/*
	359	* This function takes the non-integral cpu:mpx pll ratio
	360	* and converts it to an integer that can be used to assign
	361	* FPGA register values.
	362	* input: strptr i.e. argv[2]
	363	*/
	364
3d98b858	365	static ulong strfractoint(uchar *strptr)
126aa70f JL	366	{
	367	int i, j, retval;
	368	int mulconst;
	369	int intarr_len = 0, decarr_len = 0, no_dec = 0;
	370	ulong intval = 0, decval = 0;
	371	uchar intarr[3], decarr[3];
	372
	373	/* Assign the integer part to intarr[]
	374	* If there is no decimal point i.e.
	375	* if the ratio is an integral value
	376	* simply create the intarr.
	377	*/
	378	i = 0;
16c3cde0	379	while (strptr[i] != '.') {
126aa70f JL	380	if (strptr[i] == 0) {
	381	no_dec = 1;
	382	break;
	383	}
	384	intarr[i] = strptr[i];
	385	i++;
	386	}
	387
	388	/* Assign length of integer part to intarr_len. */
	389	intarr_len = i;
	390	intarr[i] = '\0';
	391
	392	if (no_dec) {
	393	/* Currently needed only for single digit corepll ratios */
80e955c7	394	mulconst = 10;
126aa70f JL	395	decval = 0;
	396	} else {
	397	j = 0;
80e955c7	398	i++; /* Skipping the decimal point */
16c3cde0	399	while ((strptr[i] >= '0') && (strptr[i] <= '9')) {
126aa70f JL	400	decarr[j] = strptr[i];
	401	i++;
	402	j++;
	403	}
	404
	405	decarr_len = j;
	406	decarr[j] = '\0';
	407
	408	mulconst = 1;
	409	for (i = 0; i < decarr_len; i++)
	410	mulconst *= 10;
cdd917a4	411	decval = simple_strtoul((char *)decarr, NULL, 10);
126aa70f JL	412	}
126aa70f JL	413
cdd917a4	414	intval = simple_strtoul((char *)intarr, NULL, 10);
126aa70f JL	415	intval = intval * mulconst;
	416
	417	retval = intval + decval;
	418
	419	return retval;
	420	}
3d98b858 HW	421
	422
	423	int
	424	pixis_reset_cmd(cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	425	{
16c3cde0 JY	426	unsigned int i;
	427	char *p_cf = NULL;
	428	char *p_cf_sysclk = NULL;
	429	char *p_cf_corepll = NULL;
	430	char *p_cf_mpxpll = NULL;
	431	char *p_altbank = NULL;
	432	char *p_wd = NULL;
	433	unsigned int unknown_param = 0;
3d98b858 HW	434
	435	/*
	436	* No args is a simple reset request.
	437	*/
	438	if (argc <= 1) {
	439	pixis_reset();
	440	/* not reached */
	441	}
	442
16c3cde0 JY	443	for (i = 1; i < argc; i++) {
	444	if (strcmp(argv[i], "cf") == 0) {
	445	p_cf = argv[i];
	446	if (i + 3 >= argc) {
	447	break;
	448	}
	449	p_cf_sysclk = argv[i+1];
	450	p_cf_corepll = argv[i+2];
	451	p_cf_mpxpll = argv[i+3];
	452	i += 3;
	453	continue;
	454	}
3d98b858	455
16c3cde0 JY	456	if (strcmp(argv[i], "altbank") == 0) {
	457	p_altbank = argv[i];
	458	continue;
3d98b858 HW	459	}
3d98b858 HW	460
16c3cde0 JY	461	if (strcmp(argv[i], "wd") == 0) {
	462	p_wd = argv[i];
	463	continue;
3d98b858 HW	464	}
3d98b858 HW	465
16c3cde0 JY	466	unknown_param = 1;
16c3cde0 JY	467	}
3d98b858	468
16c3cde0 JY	469	/*
	470	* Check that cf has all required parms
	471	*/
	472	if ((p_cf && !(p_cf_sysclk && p_cf_corepll && p_cf_mpxpll))
53677ef1	473	\|\| unknown_param) {
f7fecc3e	474	#ifdef CONFIG_SYS_LONGHELP
16c3cde0	475	puts(cmdtp->help);
f7fecc3e	476	#endif
16c3cde0 JY	477	return 1;
	478	}
	479
	480	/*
	481	* PIXIS seems to be sensitive to the ordering of
	482	* the registers that are touched.
	483	*/
	484	read_from_px_regs(0);
	485
	486	if (p_altbank) {
	487	read_from_px_regs_altbank(0);
	488	}
	489	clear_altbank();
	490
	491	/*
	492	* Clock configuration specified.
	493	*/
	494	if (p_cf) {
	495	unsigned long sysclk;
	496	unsigned long corepll;
	497	unsigned long mpxpll;
	498
	499	sysclk = simple_strtoul(p_cf_sysclk, NULL, 10);
	500	corepll = strfractoint((uchar *) p_cf_corepll);
	501	mpxpll = simple_strtoul(p_cf_mpxpll, NULL, 10);
	502
	503	if (!(set_px_sysclk(sysclk)
	504	&& set_px_corepll(corepll)
	505	&& set_px_mpxpll(mpxpll))) {
f7fecc3e	506	#ifdef CONFIG_SYS_LONGHELP
16c3cde0	507	puts(cmdtp->help);
f7fecc3e	508	#endif
3d98b858 HW	509	return 1;
3d98b858 HW	510	}
16c3cde0 JY	511	read_from_px_regs(1);
16c3cde0 JY	512	}
3d98b858	513
16c3cde0 JY	514	/*
	515	* Altbank specified
	516	*
	517	* NOTE CHANGE IN BEHAVIOR: previous code would default
	518	* to enabling watchdog if altbank is specified.
	519	* Now the watchdog must be enabled explicitly using 'wd'.
	520	*/
	521	if (p_altbank) {
	522	set_altbank();
	523	read_from_px_regs_altbank(1);
	524	}
	525
	526	/*
	527	* Reset with watchdog specified.
	528	*/
	529	if (p_wd) {
	530	set_px_go_with_watchdog();
3d98b858	531	} else {
16c3cde0	532	set_px_go();
3d98b858 HW	533	}
3d98b858 HW	534
16c3cde0 JY	535	/*
	536	* Shouldn't be reached.
	537	*/
3d98b858 HW	538	return 0;
	539	}
	540
	541
	542	U_BOOT_CMD(
6d0f6bcf	543	pixis_reset, CONFIG_SYS_MAXARGS, 1, pixis_reset_cmd,
2fb2604d	544	"Reset the board using the FPGA sequencer",
3d98b858 HW	545	" pixis_reset\n"
	546	" pixis_reset [altbank]\n"
	547	" pixis_reset altbank wd\n"
	548	" pixis_reset altbank cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>\n"
a89c33db WD	549	" pixis_reset cf <SYSCLK freq> <COREPLL ratio> <MPXPLL ratio>"
a89c33db WD	550	);