board/ip860/ip860.c - uboot/mindspeed - Git at Google

 /*
  * (C) Copyright 2000
  * 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
  */

 #include <common.h>
 #include <commproc.h>
 #include <mpc8xx.h>

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

 static long int dram_size (long int, long int *, long int);
 unsigned long ip860_get_dram_size(void);
 unsigned long ip860_get_clk_freq (void);
 /* ------------------------------------------------------------------------- */

 #define	_NOT_USED_	0xFFFFFFFF

 const uint sdram_table[] = {
 	/*
 	 * Single Read. (Offset 0 in UPMA RAM)
 	 */
 	0x1f07fc04, 0xeeaefc04, 0x11adfc04, 0xefbbbc00,
 	0x1ff77c47,					/* last */
 	/*
 	 * SDRAM Initialization (offset 5 in UPMA RAM)
 	 *
 	 * This is no UPM entry point. The following definition uses
 	 * the remaining space to establish an initialization
 	 * sequence, which is executed by a RUN command.
 	 *
 	 */
 	0x1ff77c34, 0xefeabc34, 0x1fb57c35,	/* last */
 	/*
 	 * Burst Read. (Offset 8 in UPMA RAM)
 	 */
 	0x1f07fc04, 0xeeaefc04, 0x10adfc04, 0xf0affc00,
 	0xf0affc00, 0xf1affc00, 0xefbbbc00, 0x1ff77c47,	/* last */
 	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 	/*
 	 * Single Write. (Offset 18 in UPMA RAM)
 	 */
 	0x1f27fc04, 0xeeaebc00, 0x01b93c04, 0x1ff77c47,	/* last */
 	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 	/*
 	 * Burst Write. (Offset 20 in UPMA RAM)
 	 */
 	0x1f07fc04, 0xeeaebc00, 0x10ad7c00, 0xf0affc00,
 	0xf0affc00, 0xe1bbbc04, 0x1ff77c47,	/* last */
 	_NOT_USED_,
 	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 	/*
 	 * Refresh  (Offset 30 in UPMA RAM)
 	 */
 	0x1ff5fc84, 0xfffffc04, 0xfffffc04, 0xfffffc04,
 	0xfffffc84, 0xfffffc07,		/* last */
 	_NOT_USED_, _NOT_USED_,
 	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
 	/*
 	 * Exception. (Offset 3c in UPMA RAM)
 	 */
 	0x7ffffc07,					/* last */
 	_NOT_USED_, _NOT_USED_, _NOT_USED_,
 };


 /* ------------------------------------------------------------------------- */
 int board_early_init_f(void)
 {
     volatile immap_t     *immap  = (immap_t *)CFG_IMMR;
     volatile memctl8xx_t *memctl = &immap->im_memctl;

 /* init BCSR chipselect line for ip860_get_clk_freq() and ip860_get_dram_size() */
     memctl->memc_or4 = CFG_OR4;
     memctl->memc_br4 = CFG_BR4;

     return 0;
 }


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

 /*
  * Check Board Identity:
  *
  * Test ID string (IP860...)
  */

 int checkboard (void)
 {
 	unsigned char *s, *e;
 	unsigned char buf[64];
 	int i;

 	puts ("Board: ");

 	i = getenv_r ("serial#", (char *)buf, sizeof (buf));
 	s = (i > 0) ? buf : NULL;

 	if (!s || strncmp ((char *)s, "IP860", 5)) {
 		puts ("### No HW ID - assuming IP860");
 	} else {
 		for (e = s; *e; ++e) {
 			if (*e == ' ')
 				break;
 		}

 		for (; s < e; ++s) {
 			putc (*s);
 		}
 	}

 	putc ('\n');

 	return (0);
 }

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

 long int initdram (int board_type)
 {
 	volatile immap_t *immap = (immap_t *) CFG_IMMR;
 	volatile memctl8xx_t *memctl = &immap->im_memctl;
 	long int size;
 	ulong refresh_val;

 	upmconfig (UPMA, (uint *) sdram_table,
 			   sizeof (sdram_table) / sizeof (uint));

 	/*
 	 * Preliminary prescaler for refresh
 	 */
 	if (ip860_get_clk_freq() == 50000000)
 	{
 		memctl->memc_mptpr = 0x0400;
 		refresh_val = 0xC3000000;
 	}
 	else
 	{
 		memctl->memc_mptpr = 0x0200;
 		refresh_val = 0x9C000000;
 	}


 	memctl->memc_mar = 0x00000088;

 	/*
 	 * Map controller banks 2 to the SDRAM address
 	 */
 	memctl->memc_or2 = CFG_OR2;
 	memctl->memc_br2 = CFG_BR2;

 	/* IP860 boards have only one bank SDRAM */


 	udelay (200);

 	/* perform SDRAM initializsation sequence */

 	memctl->memc_mamr = 0x00804114 | refresh_val;
 	memctl->memc_mcr  = 0x80004105;	/* run precharge pattern from loc 5 */
 	udelay(1);
 	memctl->memc_mamr = 0x00804118 | refresh_val;
 	memctl->memc_mcr  = 0x80004130;	/* run refresh pattern 8 times */


 	udelay (1000);

 	/*
 	 * Check SDRAM Memory Size
 	 */
 	if (ip860_get_dram_size() == 16)
 		size = dram_size (refresh_val | 0x00804114, SDRAM_BASE, SDRAM_MAX_SIZE);
 	else
 		size = dram_size (refresh_val | 0x00906114, SDRAM_BASE, SDRAM_MAX_SIZE);

 	udelay (1000);

 	memctl->memc_or2 = ((-size) & 0xFFFF0000) | SDRAM_TIMING;
 	memctl->memc_br2 = (CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V;

 	udelay (10000);

 	/*
 	 * Also, map other memory to correct position
 	 */

 #if (defined(CFG_OR1) && defined(CFG_BR1_PRELIM))
 	memctl->memc_or1 = CFG_OR1;
 	memctl->memc_br1 = CFG_BR1;
 #endif

 #if defined(CFG_OR3) && defined(CFG_BR3)
 	memctl->memc_or3 = CFG_OR3;
 	memctl->memc_br3 = CFG_BR3;
 #endif

 #if defined(CFG_OR4) && defined(CFG_BR4)
 	memctl->memc_or4 = CFG_OR4;
 	memctl->memc_br4 = CFG_BR4;
 #endif

 #if defined(CFG_OR5) && defined(CFG_BR5)
 	memctl->memc_or5 = CFG_OR5;
 	memctl->memc_br5 = CFG_BR5;
 #endif

 #if defined(CFG_OR6) && defined(CFG_BR6)
 	memctl->memc_or6 = CFG_OR6;
 	memctl->memc_br6 = CFG_BR6;
 #endif

 #if defined(CFG_OR7) && defined(CFG_BR7)
 	memctl->memc_or7 = CFG_OR7;
 	memctl->memc_br7 = CFG_BR7;
 #endif

 	return (size);
 }

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

 /*
  * Check memory range for valid RAM. A simple memory test determines
  * the actually available RAM size between addresses `base' and
  * `base + maxsize'. Some (not all) hardware errors are detected:
  * - short between address lines
  * - short between data lines
  */

 static long int dram_size (long int mamr_value, long int *base,
 						   long int maxsize)
 {
 	volatile immap_t *immap = (immap_t *) CFG_IMMR;
 	volatile memctl8xx_t *memctl = &immap->im_memctl;

 	memctl->memc_mamr = mamr_value;

 	return (get_ram_size(base, maxsize));
 }

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

 void reset_phy (void)
 {
 	volatile immap_t *immr = (immap_t *) CFG_IMMR;
 	ulong mask = PB_ENET_RESET | PB_ENET_JABD;
 	ulong reg;

 	/* Make sure PHY is not in low-power mode */
 	immr->im_cpm.cp_pbpar &= ~(mask);	/* GPIO */
 	immr->im_cpm.cp_pbodr &= ~(mask);	/* active output */

 	/* Set  JABD low  (no JABber Disable),
 	 * and RESET high (Reset PHY)
 	 */
 	reg = immr->im_cpm.cp_pbdat;
 	reg = (reg & ~PB_ENET_JABD) | PB_ENET_RESET;
 	immr->im_cpm.cp_pbdat = reg;

 	/* now drive outputs */
 	immr->im_cpm.cp_pbdir |= mask;	/* output */
 	udelay (1000);
 	/*
 	   * Release RESET signal
 	 */
 	immr->im_cpm.cp_pbdat &= ~(PB_ENET_RESET);
 	udelay (1000);
 }

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

 unsigned long ip860_get_clk_freq(void)
 {
 	volatile ip860_bcsr_t	*bcsr   = (ip860_bcsr_t *)BCSR_BASE;
 	ulong temp;
 	uchar sysclk;

 	if ((bcsr->bd_status & 0x80) == 0x80)	/* bd_rev valid ? */
 		sysclk = (bcsr->bd_rev & 0x18) >> 3;
 	else
 		sysclk = 0x00;

 	switch (sysclk)
 	{
 		case 0x00:
 			temp = 50000000;
 			break;

 		case 0x01:
 			temp = 80000000;
 			break;

 		default:
 			temp = 50000000;
 			break;
 	}

 	return (temp);

 }


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

 unsigned long ip860_get_dram_size(void)
 {
 	volatile ip860_bcsr_t	*bcsr   = (ip860_bcsr_t *)BCSR_BASE;
 	ulong temp;
 	uchar dram_size;

 	if ((bcsr->bd_status & 0x80) == 0x80)	/* bd_rev valid ? */
 		dram_size = (bcsr->bd_rev & 0xE0) >> 5;
 	else
 		dram_size = 0x00;	/* default is 16 MB */

 	switch (dram_size)
 	{
 		case 0x00:
 			temp = 16;
 			break;

 		case 0x01:
 			temp = 32;
 			break;

 		default:
 			temp = 16;
 			break;
 	}

 	return (temp);

 }

 /* ------------------------------------------------------------------------- */
	/*
	* (C) Copyright 2000
	* 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
	*/

	#include <common.h>
	#include <commproc.h>
	#include <mpc8xx.h>

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

	static long int dram_size (long int, long int *, long int);
	unsigned long ip860_get_dram_size(void);
	unsigned long ip860_get_clk_freq (void);
	/* ------------------------------------------------------------------------- */

	#define _NOT_USED_ 0xFFFFFFFF

	const uint sdram_table[] = {
	/*
	* Single Read. (Offset 0 in UPMA RAM)
	*/
	0x1f07fc04, 0xeeaefc04, 0x11adfc04, 0xefbbbc00,
	0x1ff77c47, /* last */
	/*
	* SDRAM Initialization (offset 5 in UPMA RAM)
	*
	* This is no UPM entry point. The following definition uses
	* the remaining space to establish an initialization
	* sequence, which is executed by a RUN command.
	*
	*/
	0x1ff77c34, 0xefeabc34, 0x1fb57c35, /* last */
	/*
	* Burst Read. (Offset 8 in UPMA RAM)
	*/
	0x1f07fc04, 0xeeaefc04, 0x10adfc04, 0xf0affc00,
	0xf0affc00, 0xf1affc00, 0xefbbbc00, 0x1ff77c47, /* last */
	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
	/*
	* Single Write. (Offset 18 in UPMA RAM)
	*/
	0x1f27fc04, 0xeeaebc00, 0x01b93c04, 0x1ff77c47, /* last */
	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
	/*
	* Burst Write. (Offset 20 in UPMA RAM)
	*/
	0x1f07fc04, 0xeeaebc00, 0x10ad7c00, 0xf0affc00,
	0xf0affc00, 0xe1bbbc04, 0x1ff77c47, /* last */
	_NOT_USED_,
	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
	/*
	* Refresh (Offset 30 in UPMA RAM)
	*/
	0x1ff5fc84, 0xfffffc04, 0xfffffc04, 0xfffffc04,
	0xfffffc84, 0xfffffc07, /* last */
	_NOT_USED_, _NOT_USED_,
	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
	/*
	* Exception. (Offset 3c in UPMA RAM)
	*/
	0x7ffffc07, /* last */
	_NOT_USED_, _NOT_USED_, _NOT_USED_,
	};


	/* ------------------------------------------------------------------------- */
	int board_early_init_f(void)
	{
	volatile immap_t immap = (immap_t )CFG_IMMR;
	volatile memctl8xx_t *memctl = &immap->im_memctl;

	/* init BCSR chipselect line for ip860_get_clk_freq() and ip860_get_dram_size() */
	memctl->memc_or4 = CFG_OR4;
	memctl->memc_br4 = CFG_BR4;

	return 0;
	}


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

	/*
	* Check Board Identity:
	*
	* Test ID string (IP860...)
	*/

	int checkboard (void)
	{
	unsigned char s, e;
	unsigned char buf[64];
	int i;

	puts ("Board: ");

	i = getenv_r ("serial#", (char *)buf, sizeof (buf));
	s = (i > 0) ? buf : NULL;

	if (!s \|\| strncmp ((char *)s, "IP860", 5)) {
	puts ("### No HW ID - assuming IP860");
	} else {
	for (e = s; *e; ++e) {
	if (*e == ' ')
	break;
	}

	for (; s < e; ++s) {
	putc (*s);
	}
	}

	putc ('\n');

	return (0);
	}

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

	long int initdram (int board_type)
	{
	volatile immap_t immap = (immap_t ) CFG_IMMR;
	volatile memctl8xx_t *memctl = &immap->im_memctl;
	long int size;
	ulong refresh_val;

	upmconfig (UPMA, (uint *) sdram_table,
	sizeof (sdram_table) / sizeof (uint));

	/*
	* Preliminary prescaler for refresh
	*/
	if (ip860_get_clk_freq() == 50000000)
	{
	memctl->memc_mptpr = 0x0400;
	refresh_val = 0xC3000000;
	}
	else
	{
	memctl->memc_mptpr = 0x0200;
	refresh_val = 0x9C000000;
	}


	memctl->memc_mar = 0x00000088;

	/*
	* Map controller banks 2 to the SDRAM address
	*/
	memctl->memc_or2 = CFG_OR2;
	memctl->memc_br2 = CFG_BR2;

	/* IP860 boards have only one bank SDRAM */


	udelay (200);

	/* perform SDRAM initializsation sequence */

	memctl->memc_mamr = 0x00804114 \| refresh_val;
	memctl->memc_mcr = 0x80004105; /* run precharge pattern from loc 5 */
	udelay(1);
	memctl->memc_mamr = 0x00804118 \| refresh_val;
	memctl->memc_mcr = 0x80004130; /* run refresh pattern 8 times */


	udelay (1000);

	/*
	* Check SDRAM Memory Size
	*/
	if (ip860_get_dram_size() == 16)
	size = dram_size (refresh_val \| 0x00804114, SDRAM_BASE, SDRAM_MAX_SIZE);
	else
	size = dram_size (refresh_val \| 0x00906114, SDRAM_BASE, SDRAM_MAX_SIZE);

	udelay (1000);

	memctl->memc_or2 = ((-size) & 0xFFFF0000) \| SDRAM_TIMING;
	memctl->memc_br2 = (CFG_SDRAM_BASE & BR_BA_MSK) \| BR_MS_UPMA \| BR_V;

	udelay (10000);

	/*
	* Also, map other memory to correct position
	*/

	#if (defined(CFG_OR1) && defined(CFG_BR1_PRELIM))
	memctl->memc_or1 = CFG_OR1;
	memctl->memc_br1 = CFG_BR1;
	#endif

	#if defined(CFG_OR3) && defined(CFG_BR3)
	memctl->memc_or3 = CFG_OR3;
	memctl->memc_br3 = CFG_BR3;
	#endif

	#if defined(CFG_OR4) && defined(CFG_BR4)
	memctl->memc_or4 = CFG_OR4;
	memctl->memc_br4 = CFG_BR4;
	#endif

	#if defined(CFG_OR5) && defined(CFG_BR5)
	memctl->memc_or5 = CFG_OR5;
	memctl->memc_br5 = CFG_BR5;
	#endif

	#if defined(CFG_OR6) && defined(CFG_BR6)
	memctl->memc_or6 = CFG_OR6;
	memctl->memc_br6 = CFG_BR6;
	#endif

	#if defined(CFG_OR7) && defined(CFG_BR7)
	memctl->memc_or7 = CFG_OR7;
	memctl->memc_br7 = CFG_BR7;
	#endif

	return (size);
	}

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

	/*
	* Check memory range for valid RAM. A simple memory test determines
	* the actually available RAM size between addresses `base' and
	* `base + maxsize'. Some (not all) hardware errors are detected:
	* - short between address lines
	* - short between data lines
	*/

	static long int dram_size (long int mamr_value, long int *base,
	long int maxsize)
	{
	volatile immap_t immap = (immap_t ) CFG_IMMR;
	volatile memctl8xx_t *memctl = &immap->im_memctl;

	memctl->memc_mamr = mamr_value;

	return (get_ram_size(base, maxsize));
	}

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

	void reset_phy (void)
	{
	volatile immap_t immr = (immap_t ) CFG_IMMR;
	ulong mask = PB_ENET_RESET \| PB_ENET_JABD;
	ulong reg;

	/* Make sure PHY is not in low-power mode */
	immr->im_cpm.cp_pbpar &= ~(mask); /* GPIO */
	immr->im_cpm.cp_pbodr &= ~(mask); /* active output */

	/* Set JABD low (no JABber Disable),
	* and RESET high (Reset PHY)
	*/
	reg = immr->im_cpm.cp_pbdat;
	reg = (reg & ~PB_ENET_JABD) \| PB_ENET_RESET;
	immr->im_cpm.cp_pbdat = reg;

	/* now drive outputs */
	immr->im_cpm.cp_pbdir \|= mask; /* output */
	udelay (1000);
	/*
	* Release RESET signal
	*/
	immr->im_cpm.cp_pbdat &= ~(PB_ENET_RESET);
	udelay (1000);
	}

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

	unsigned long ip860_get_clk_freq(void)
	{
	volatile ip860_bcsr_t bcsr = (ip860_bcsr_t )BCSR_BASE;
	ulong temp;
	uchar sysclk;

	if ((bcsr->bd_status & 0x80) == 0x80) /* bd_rev valid ? */
	sysclk = (bcsr->bd_rev & 0x18) >> 3;
	else
	sysclk = 0x00;

	switch (sysclk)
	{
	case 0x00:
	temp = 50000000;
	break;

	case 0x01:
	temp = 80000000;
	break;

	default:
	temp = 50000000;
	break;
	}

	return (temp);

	}


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

	unsigned long ip860_get_dram_size(void)
	{
	volatile ip860_bcsr_t bcsr = (ip860_bcsr_t )BCSR_BASE;
	ulong temp;
	uchar dram_size;

	if ((bcsr->bd_status & 0x80) == 0x80) /* bd_rev valid ? */
	dram_size = (bcsr->bd_rev & 0xE0) >> 5;
	else
	dram_size = 0x00; /* default is 16 MB */

	switch (dram_size)
	{
	case 0x00:
	temp = 16;
	break;

	case 0x01:
	temp = 32;
	break;

	default:
	temp = 16;
	break;
	}

	return (temp);

	}

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