/* * (C) Copyright 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 */#include <common.h>#include <mpc8xx.h>#include <commproc.h>#include <i2c.h>#include <command.h>/* ------------------------------------------------------------------------- */static long int dram_size (long int, long int *, long int);static void puma_status (void);static void puma_set_mode (int mode);static int puma_init_done (void);static void puma_load (ulong addr, ulong len);/* ------------------------------------------------------------------------- */#define	_NOT_USED_	0xFFFFFFFF/* * 50 MHz SDRAM access using UPM A */const uint sdram_table[] = {	/*	 * Single Read. (Offset 0 in UPM RAM)	 */	0x1f0dfc04, 0xeeafbc04, 0x11af7c04, 0xefbeec00,	0x1ffddc47,		/* last */	/*	 * SDRAM Initialization (offset 5 in UPM 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.	 *	 */	0x1ffddc35, 0xefceac34, 0x1f3d5c35,	/* last */	/*	 * Burst Read. (Offset 8 in UPM RAM)	 */	0x1f0dfc04, 0xeeafbc04, 0x10af7c04, 0xf0affc00,	0xf0affc00, 0xf1affc00, 0xefbeec00, 0x1ffddc47,	/* last */	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	/*	 * Single Write. (Offset 18 in UPM RAM)	 */	0x1f0dfc04, 0xeeafac00, 0x01be4c04, 0x1ffddc47,	/* last */	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	/*	 * Burst Write. (Offset 20 in UPM RAM)	 */	0x1f0dfc04, 0xeeafac00, 0x10af5c00, 0xf0affc00,	0xf0affc00, 0xe1beec04, 0x1ffddc47,	/* last */	_NOT_USED_,	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	/*	 * Refresh  (Offset 30 in UPM RAM)	 */	0x1ffd7c84, 0xfffffc04, 0xfffffc04, 0xfffffc04,	0xfffffc84, 0xfffffc07,	/* last */	_NOT_USED_, _NOT_USED_,	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	/*	 * Exception. (Offset 3c in UPM RAM)	 */	0x7ffffc07,		/* last */	_NOT_USED_, _NOT_USED_, _NOT_USED_,};/* ------------------------------------------------------------------------- *//* * PUMA access using UPM B */const uint puma_table[] = {	/*	 * Single Read. (Offset 0 in UPM RAM)	 */	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	_NOT_USED_,	/*	 * Precharge and MRS	 */	_NOT_USED_, _NOT_USED_, _NOT_USED_,	/*	 * Burst Read. (Offset 8 in UPM RAM)	 */	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	/*	 * Single Write. (Offset 18 in UPM RAM)	 */	0x0ffff804, 0x0ffff400, 0x3ffffc47,	/* last */	_NOT_USED_,	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	/*	 * Burst Write. (Offset 20 in UPM RAM)	 */	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	/*	 * Refresh  (Offset 30 in UPM RAM)	 */	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,	/*	 * Exception. (Offset 3c in UPM RAM)	 */	0x7ffffc07,		/* last */	_NOT_USED_, _NOT_USED_, _NOT_USED_,};/* ------------------------------------------------------------------------- *//* * Check Board Identity: * */int checkboard (void){	puts ("Board: Siemens PCU E\n");	return (0);}/* ------------------------------------------------------------------------- */long int initdram (int board_type){	volatile immap_t *immr = (immap_t *) CFG_IMMR;	volatile memctl8xx_t *memctl = &immr->im_memctl;	long int size_b0, reg;	int i;	/*	 * Configure UPMA for SDRAM	 */	upmconfig (UPMA, (uint *) sdram_table,		   sizeof (sdram_table) / sizeof (uint));	memctl->memc_mptpr = CFG_MPTPR;	/* burst length=4, burst type=sequential, CAS latency=2 */	memctl->memc_mar = 0x00000088;	/*	 * Map controller bank 2 to the SDRAM bank at preliminary address.	 */#if PCU_E_WITH_SWAPPED_CS	/* XXX */	memctl->memc_or5 = CFG_OR5_PRELIM;	memctl->memc_br5 = CFG_BR5_PRELIM;#else  /* XXX */	memctl->memc_or2 = CFG_OR2_PRELIM;	memctl->memc_br2 = CFG_BR2_PRELIM;#endif /* XXX */	/* initialize memory address register */	memctl->memc_mamr = CFG_MAMR;	/* refresh not enabled yet */	/* mode initialization (offset 5) */#if PCU_E_WITH_SWAPPED_CS	/* XXX */	udelay (200);		/* 0x8000A105 */	memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS5 | MCR_MLCF (1) | MCR_MAD (0x05);#else  /* XXX */	udelay (200);		/* 0x80004105 */	memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS2 | MCR_MLCF (1) | MCR_MAD (0x05);#endif /* XXX */	/* run 2 refresh sequence with 4-beat refresh burst (offset 0x30) */#if PCU_E_WITH_SWAPPED_CS	/* XXX */	udelay (1);		/* 0x8000A830 */	memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS5 | MCR_MLCF (8) | MCR_MAD (0x30);#else  /* XXX */	udelay (1);		/* 0x80004830 */	memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS2 | MCR_MLCF (8) | MCR_MAD (0x30);#endif /* XXX */#if PCU_E_WITH_SWAPPED_CS	/* XXX */	udelay (1);		/* 0x8000A106 */	memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS5 | MCR_MLCF (1) | MCR_MAD (0x06);#else  /* XXX */	udelay (1);		/* 0x80004106 */	memctl->memc_mcr = MCR_OP_RUN | MCR_MB_CS2 | MCR_MLCF (1) | MCR_MAD (0x06);#endif /* XXX */	reg = memctl->memc_mamr;	reg &= ~MAMR_TLFA_MSK;	/* switch timer loop ... */	reg |= MAMR_TLFA_4X;	/* ... to 4x */	reg |= MAMR_PTAE;	/* enable refresh */	memctl->memc_mamr = reg;	udelay (200);	/* Need at least 10 DRAM accesses to stabilize */	for (i = 0; i < 10; ++i) {#if PCU_E_WITH_SWAPPED_CS	/* XXX */		volatile unsigned long *addr =			(volatile unsigned long *) SDRAM_BASE5_PRELIM;#else  /* XXX */		volatile unsigned long *addr =			(volatile unsigned long *) SDRAM_BASE2_PRELIM;#endif /* XXX */		unsigned long val;		val = *(addr + i);		*(addr + i) = val;	}	/*	 * Check Bank 0 Memory Size for re-configuration	 */#if PCU_E_WITH_SWAPPED_CS	/* XXX */	size_b0 = dram_size (CFG_MAMR, (long *) SDRAM_BASE5_PRELIM, SDRAM_MAX_SIZE);#else  /* XXX */	size_b0 = dram_size (CFG_MAMR, (long *) SDRAM_BASE2_PRELIM, SDRAM_MAX_SIZE);#endif /* XXX */	memctl->memc_mamr = CFG_MAMR | MAMR_PTAE;	/*	 * Final mapping:	 */#if PCU_E_WITH_SWAPPED_CS	/* XXX */	memctl->memc_or5 = ((-size_b0) & 0xFFFF0000) | SDRAM_TIMING;	memctl->memc_br5 = (CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V;#else  /* XXX */	memctl->memc_or2 = ((-size_b0) & 0xFFFF0000) | SDRAM_TIMING;	memctl->memc_br2 = (CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V;#endif /* XXX */	udelay (1000);	/*	 * Configure UPMB for PUMA	 */	upmconfig (UPMB, (uint *) puma_table,		   sizeof (puma_table) / sizeof (uint));	return (size_b0);}/* ------------------------------------------------------------------------- *//* * 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 *immr = (immap_t *) CFG_IMMR;	volatile memctl8xx_t *memctl = &immr->im_memctl;	memctl->memc_mamr = mamr_value;	return (get_ram_size (base, maxsize));}/* ------------------------------------------------------------------------- */#if PCU_E_WITH_SWAPPED_CS	/* XXX */#define	ETH_CFG_BITS	(CFG_PB_ETH_CFG1 | CFG_PB_ETH_CFG2  | CFG_PB_ETH_CFG3 )#else  /* XXX */#define	ETH_CFG_BITS	(CFG_PB_ETH_MDDIS | CFG_PB_ETH_CFG1 | \			 CFG_PB_ETH_CFG2  | CFG_PB_ETH_CFG3 )#endif /* XXX */#define ETH_ALL_BITS	(ETH_CFG_BITS | CFG_PB_ETH_POWERDOWN | CFG_PB_ETH_RESET)void reset_phy (void){	immap_t *immr = (immap_t *) CFG_IMMR;	ulong value;	/* Configure all needed port pins for GPIO */#if PCU_E_WITH_SWAPPED_CS	/* XXX */# ifdef CFG_ETH_MDDIS_VALUE	immr->im_ioport.iop_padat |= CFG_PA_ETH_MDDIS;# else	immr->im_ioport.iop_padat &= ~(CFG_PA_ETH_MDDIS);	/* Set low */# endif	immr->im_ioport.iop_papar &= ~(CFG_PA_ETH_MDDIS);	/* GPIO */	immr->im_ioport.iop_paodr &= ~(CFG_PA_ETH_MDDIS);	/* active output */	immr->im_ioport.iop_padir |= CFG_PA_ETH_MDDIS;	/* output */#endif /* XXX */	immr->im_cpm.cp_pbpar &= ~(ETH_ALL_BITS);	/* GPIO */	immr->im_cpm.cp_pbodr &= ~(ETH_ALL_BITS);	/* active output */	value = immr->im_cpm.cp_pbdat;	/* Assert Powerdown and Reset signals */	value |= CFG_PB_ETH_POWERDOWN;	value &= ~(CFG_PB_ETH_RESET);	/* PHY configuration includes MDDIS and CFG1 ... CFG3 */#if !PCU_E_WITH_SWAPPED_CS# ifdef CFG_ETH_MDDIS_VALUE	value |= CFG_PB_ETH_MDDIS;# else	value &= ~(CFG_PB_ETH_MDDIS);# endif#endif#ifdef CFG_ETH_CFG1_VALUE	value |= CFG_PB_ETH_CFG1;#else	value &= ~(CFG_PB_ETH_CFG1);#endif#ifdef CFG_ETH_CFG2_VALUE	value |= CFG_PB_ETH_CFG2;#else	value &= ~(CFG_PB_ETH_CFG2);#endif#ifdef CFG_ETH_CFG3_VALUE	value |= CFG_PB_ETH_CFG3;#else	value &= ~(CFG_PB_ETH_CFG3);#endif	/* Drive output signals to initial state */	immr->im_cpm.cp_pbdat = value;	immr->im_cpm.cp_pbdir |= ETH_ALL_BITS;	udelay (10000);	/* De-assert Ethernet Powerdown */	immr->im_cpm.cp_pbdat &= ~(CFG_PB_ETH_POWERDOWN);	/* Enable PHY power */	udelay (10000);	/* de-assert RESET signal of PHY */	immr->im_cpm.cp_pbdat |= CFG_PB_ETH_RESET;	udelay (1000);}/*----------------------------------------------------------------------- * Board Special Commands: access functions for "PUMA" FPGA */#if defined(CONFIG_CMD_BSP)#define	PUMA_READ_MODE	0#define PUMA_LOAD_MODE	1int do_puma (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]){	ulong addr, len;	switch (argc) {	case 2:		/* PUMA reset */		if (strncmp (argv[1], "stat", 4) == 0) {	/* Reset */			puma_status ();			return 0;		}		break;	case 4:		/* PUMA load addr len */		if (strcmp (argv[1], "load") != 0)			break;		addr = simple_strtoul (argv[2], NULL, 16);		len = simple_strtoul (argv[3], NULL, 16);		printf ("PUMA load: addr %08lX len %ld (0x%lX):  ",			addr, len, len);		puma_load (addr, len);		return 0;	default:		break;	}	printf ("Usage:\n%s\n", cmdtp->usage);	return 1;}U_BOOT_CMD (puma, 4, 1, do_puma,	    "puma    - access PUMA FPGA\n",	    "status - print PUMA status\n"	    "puma load addr len - load PUMA configuration data\n");#endif/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */static void puma_set_mode (int mode){	volatile immap_t *immr = (immap_t *) CFG_IMMR;	volatile memctl8xx_t *memctl = &immr->im_memctl;	/* disable PUMA in memory controller */#if PCU_E_WITH_SWAPPED_CS	/* XXX */	memctl->memc_br3 = 0;#else  /* XXX */	memctl->memc_br4 = 0;#endif /* XXX */	switch (mode) {	case PUMA_READ_MODE:#if PCU_E_WITH_SWAPPED_CS	/* XXX */		memctl->memc_or3 = PUMA_CONF_OR_READ;		memctl->memc_br3 = PUMA_CONF_BR_READ;#else  /* XXX */		memctl->memc_or4 = PUMA_CONF_OR_READ;		memctl->memc_br4 = PUMA_CONF_BR_READ;#endif /* XXX */		break;	case PUMA_LOAD_MODE:#if PCU_E_WITH_SWAPPED_CS	/* XXX */		memctl->memc_or3 = PUMA_CONF_OR_LOAD;		memctl->memc_br3 = PUMA_CONF_BR_LOAD;#else  /* XXX */		memctl->memc_or4 = PUMA_CONF_OR_READ;		memctl->memc_br4 = PUMA_CONF_BR_READ;#endif /* XXX */		break;	}}/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */#define	PUMA_INIT_TIMEOUT	1000	/* max. 1000 ms = 1 second */static void puma_load (ulong addr, ulong len){	volatile immap_t *immr = (immap_t *) CFG_IMMR;	volatile uchar *fpga_addr = (volatile uchar *) PUMA_CONF_BASE;	/* XXX ??? */	uchar *data = (uchar *) addr;	int i;	/* align length */	if (len & 1)		++len;	/* Reset FPGA */	immr->im_ioport.iop_pcpar &= ~(CFG_PC_PUMA_INIT);	/* make input */	immr->im_ioport.iop_pcso  &= ~(CFG_PC_PUMA_INIT);	immr->im_ioport.iop_pcdir &= ~(CFG_PC_PUMA_INIT);#if PCU_E_WITH_SWAPPED_CS	/* XXX */	immr->im_cpm.cp_pbpar &= ~(CFG_PB_PUMA_PROG);		/* GPIO */	immr->im_cpm.cp_pbodr &= ~(CFG_PB_PUMA_PROG);		/* active output */	immr->im_cpm.cp_pbdat &= ~(CFG_PB_PUMA_PROG);		/* Set low */	immr->im_cpm.cp_pbdir |=   CFG_PB_PUMA_PROG;		/* output */#else	immr->im_ioport.iop_papar &= ~(CFG_PA_PUMA_PROG);	/* GPIO */	immr->im_ioport.iop_padat &= ~(CFG_PA_PUMA_PROG);	/* Set low */	immr->im_ioport.iop_paodr &= ~(CFG_PA_PUMA_PROG);	/* active output */	immr->im_ioport.iop_padir |=   CFG_PA_PUMA_PROG;	/* output */#endif /* XXX */	udelay (100);#if PCU_E_WITH_SWAPPED_CS	/* XXX */	immr->im_cpm.cp_pbdat |= CFG_PB_PUMA_PROG;	/* release reset */#else	immr->im_ioport.iop_padat |= CFG_PA_PUMA_PROG;	/* release reset */#endif /* XXX */	/* wait until INIT indicates completion of reset */	for (i = 0; i < PUMA_INIT_TIMEOUT; ++i) {		udelay (1000);		if (immr->im_ioport.iop_pcdat & CFG_PC_PUMA_INIT)			break;	}	if (i == PUMA_INIT_TIMEOUT) {		printf ("*** PUMA init timeout ***\n");		return;	}	puma_set_mode (PUMA_LOAD_MODE);	while (len--)		*fpga_addr = *data++;	puma_set_mode (PUMA_READ_MODE);	puma_status ();}/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */static void puma_status (void){	/* Check state */	printf ("PUMA initialization is %scomplete\n",		puma_init_done ()? "" : "NOT ");}/* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . */static int puma_init_done (void){	volatile immap_t *immr = (immap_t *) CFG_IMMR;	/* make sure pin is GPIO input */	immr->im_ioport.iop_pcpar &= ~(CFG_PC_PUMA_DONE);	immr->im_ioport.iop_pcso &= ~(CFG_PC_PUMA_DONE);	immr->im_ioport.iop_pcdir &= ~(CFG_PC_PUMA_DONE);	return (immr->im_ioport.iop_pcdat & CFG_PC_PUMA_DONE) ? 1 : 0;}/* ------------------------------------------------------------------------- */int misc_init_r (void){	ulong addr = 0;	ulong len = 0;	char *s;	printf ("PUMA:  ");	if (puma_init_done ()) {		printf ("initialized\n");		return 0;	}	if ((s = getenv ("puma_addr")) != NULL)		addr = simple_strtoul (s, NULL, 16);	if ((s = getenv ("puma_len")) != NULL)		len = simple_strtoul (s, NULL, 16);	if ((!addr) || (!len)) {		printf ("net list undefined\n");		return 0;	}	printf ("loading... ");	puma_load (addr, len);	return (0);}/* ------------------------------------------------------------------------- */