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/*
* (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 <ioports.h>
#include <mpc8260.h>
/*
* I/O Port configuration table
*
* if conf is 1, then that port pin will be configured at boot time
* according to the five values podr/pdir/ppar/psor/pdat for that entry
*/
const iop_conf_t iop_conf_tab[4][32] = {
/* Port A configuration */
{ /* conf ppar psor pdir podr pdat */
/* PA31 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 COL */
/* PA30 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 CRS */
/* PA29 */ { 1, 1, 1, 1, 0, 0 }, /* FCC1 TXER */
/* PA28 */ { 1, 1, 1, 1, 0, 0 }, /* FCC1 TXEN */
/* PA27 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 RXDV */
/* PA26 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 RXER */
/* PA25 */ { 0, 0, 0, 1, 0, 0 }, /* PA25 */
/* PA24 */ { 0, 0, 0, 1, 0, 0 }, /* PA24 */
/* PA23 */ { 0, 0, 0, 1, 0, 0 }, /* PA23 */
/* PA22 */ { 0, 0, 0, 1, 0, 0 }, /* PA22 */
/* PA21 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 TXD3 */
/* PA20 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 TXD2 */
/* PA19 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 TXD1 */
/* PA18 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 TXD0 */
/* PA17 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 RXD0 */
/* PA16 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 RXD1*/
/* PA15 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 RXD2 */
/* PA14 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 RXD3 */
/* PA13 */ { 0, 0, 0, 1, 0, 0 }, /* PA13 */
/* PA12 */ { 0, 0, 0, 1, 0, 0 }, /* PA12 */
/* PA11 */ { 0, 0, 0, 1, 0, 0 }, /* PA11 */
/* PA10 */ { 0, 0, 0, 1, 0, 0 }, /* PA10 */
/* PA9 */ { 0, 1, 0, 1, 0, 0 }, /* PA9 */
/* PA8 */ { 0, 1, 0, 0, 0, 0 }, /* PA8 */
/* PA7 */ { 0, 0, 0, 1, 0, 0 }, /* PA7 */
/* PA6 */ { 0, 0, 0, 1, 0, 0 }, /* PA6 */
/* PA5 */ { 0, 0, 0, 1, 0, 0 }, /* PA5 */
/* PA4 */ { 0, 0, 0, 1, 0, 0 }, /* PA4 */
/* PA3 */ { 0, 0, 0, 1, 0, 0 }, /* PA3 */
/* PA2 */ { 0, 0, 0, 1, 0, 0 }, /* PA2 */
/* PA1 */ { 0, 0, 0, 1, 0, 0 }, /* PA1 */
/* PA0 */ { 0, 0, 0, 1, 0, 0 } /* PA0 */
},
/* Port B configuration */
{ /* conf ppar psor pdir podr pdat */
/* PB31 */ { 0, 1, 0, 1, 0, 0 }, /* PB31 */
/* PB30 */ { 0, 1, 0, 0, 0, 0 }, /* PB30 */
/* PB29 */ { 0, 1, 1, 1, 0, 0 }, /* PB29 */
/* PB28 */ { 1, 1, 1, 1, 0, 0 }, /* SCC1 TXD */
/* PB27 */ { 0, 1, 0, 0, 0, 0 }, /* PB27 */
/* PB26 */ { 0, 1, 0, 0, 0, 0 }, /* PB26 */
/* PB25 */ { 0, 1, 0, 1, 0, 0 }, /* PB25 */
/* PB24 */ { 0, 1, 0, 1, 0, 0 }, /* PB24 */
/* PB23 */ { 0, 1, 0, 1, 0, 0 }, /* PB23 */
/* PB22 */ { 0, 1, 0, 1, 0, 0 }, /* PB22 */
/* PB21 */ { 0, 1, 0, 0, 0, 0 }, /* PB21 */
/* PB20 */ { 0, 1, 0, 0, 0, 0 }, /* PB20 */
/* PB19 */ { 0, 1, 0, 0, 0, 0 }, /* PB19 */
/* PB18 */ { 0, 1, 0, 0, 0, 0 }, /* PB18 */
/* PB17 */ { 0, 0, 0, 0, 0, 0 }, /* PB17 */
/* PB16 */ { 0, 0, 0, 0, 0, 0 }, /* PB16 */
/* PB15 */ { 1, 1, 0, 0, 0, 0 }, /* SCC2 RXD */
/* PB14 */ { 1, 1, 0, 0, 0, 0 }, /* SCC3 RXD */
/* PB13 */ { 0, 0, 0, 0, 0, 0 }, /* PB13 */
/* PB12 */ { 0, 0, 0, 0, 0, 0 }, /* PB12 */
/* PB11 */ { 0, 0, 0, 0, 0, 0 }, /* PB11 */
/* PB10 */ { 0, 0, 0, 0, 0, 0 }, /* PB10 */
/* PB9 */ { 0, 0, 0, 0, 0, 0 }, /* PB9 */
/* PB8 */ { 1, 1, 1, 1, 0, 0 }, /* SCC3 TXD */
/* PB7 */ { 0, 0, 0, 0, 0, 0 }, /* PB7 */
/* PB6 */ { 0, 0, 0, 0, 0, 0 }, /* PB6 */
/* PB5 */ { 0, 0, 0, 0, 0, 0 }, /* PB5 */
/* PB4 */ { 0, 0, 0, 0, 0, 0 }, /* PB4 */
/* PB3 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
/* PB2 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
/* PB1 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
/* PB0 */ { 0, 0, 0, 0, 0, 0 } /* pin doesn't exist */
},
/* Port C */
{ /* conf ppar psor pdir podr pdat */
/* PC31 */ { 0, 0, 0, 1, 0, 0 }, /* PC31 */
/* PC30 */ { 0, 0, 0, 1, 0, 0 }, /* PC30 */
/* PC29 */ { 0, 1, 1, 0, 0, 0 }, /* SCC1 CTS */
/* PC28 */ { 0, 0, 0, 1, 0, 0 }, /* SCC2 CTS */
/* PC27 */ { 0, 0, 0, 1, 0, 0 }, /* PC27 */
/* PC26 */ { 0, 0, 0, 1, 0, 0 }, /* PC26 */
/* PC25 */ { 0, 0, 0, 1, 0, 0 }, /* PC25 */
/* PC24 */ { 0, 0, 0, 1, 0, 0 }, /* PC24 */
/* PC23 */ { 0, 1, 0, 1, 0, 0 }, /* PC23 */
/* PC22 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 TXCK */
/* PC21 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 RXCK */
/* PC20 */ { 0, 1, 0, 0, 0, 0 }, /* PC20 */
/* PC19 */ { 0, 1, 0, 0, 0, 0 }, /* PC19 */
/* PC18 */ { 0, 1, 0, 0, 0, 0 }, /* PC18 */
/* PC17 */ { 0, 0, 0, 1, 0, 0 }, /* PC17 */
/* PC16 */ { 0, 0, 0, 1, 0, 0 }, /* PC16 */
/* PC15 */ { 1, 1, 0, 1, 0, 0 }, /* SMC2 TXD */
/* PC14 */ { 0, 1, 0, 0, 0, 0 }, /* SCC1 DCD */
/* PC13 */ { 0, 0, 0, 1, 0, 0 }, /* PC13 */
/* PC12 */ { 0, 0, 0, 1, 0, 0 }, /* SCC2 DCD */
/* PC11 */ { 0, 0, 0, 1, 0, 0 }, /* SCC3 CTS */
/* PC10 */ { 0, 0, 0, 1, 0, 0 }, /* SCC3 DCD */
/* PC9 */ { 0, 0, 0, 1, 0, 0 }, /* SCC4 CTS */
/* PC8 */ { 0, 0, 0, 1, 0, 0 }, /* SCC4 DCD */
/* PC7 */ { 0, 0, 0, 1, 0, 0 }, /* PC7 */
/* PC6 */ { 0, 0, 0, 1, 0, 0 }, /* PC6 */
/* PC5 */ { 0, 0, 0, 1, 0, 0 }, /* PC5 */
/* PC4 */ { 0, 0, 0, 1, 0, 0 }, /* PC4 */
/* PC3 */ { 0, 0, 0, 1, 0, 0 }, /* PC3 */
/* PC2 */ { 0, 0, 0, 1, 0, 1 }, /* PC2 */
/* PC1 */ { 0, 0, 0, 1, 0, 0 }, /* PC1 */
/* PC0 */ { 0, 0, 0, 1, 0, 0 }, /* PC0 */
},
/* Port D */
{ /* conf ppar psor pdir podr pdat */
/* PD31 */ { 1, 1, 0, 0, 0, 0 }, /* SCC1 RXD */
/* PD30 */ { 0, 1, 1, 1, 0, 0 }, /* PD30 */
/* PD29 */ { 0, 1, 0, 1, 0, 0 }, /* SCC1 RTS */
/* PD28 */ { 0, 0, 0, 1, 0, 0 }, /* PD28 */
/* PD27 */ { 0, 1, 0, 1, 0, 0 }, /* SCC2 RTS */
/* PD26 */ { 0, 0, 0, 1, 0, 0 }, /* PD26 */
/* PD25 */ { 0, 0, 0, 1, 0, 0 }, /* PD25 */
/* PD24 */ { 0, 0, 0, 1, 0, 0 }, /* PD24 */
/* PD23 */ { 0, 0, 0, 1, 0, 0 }, /* SCC3 RTS */
/* PD22 */ { 1, 1, 0, 0, 0, 0 }, /* SCC4 RXD */
/* PD21 */ { 1, 1, 0, 1, 0, 0 }, /* SCC4 TXD */
/* PD20 */ { 0, 0, 1, 1, 0, 0 }, /* SCC4 RTS */
/* PD19 */ { 0, 0, 0, 1, 0, 0 }, /* PD19 */
/* PD18 */ { 0, 0, 0, 1, 0, 0 }, /* PD18 */
/* PD17 */ { 0, 1, 0, 0, 0, 0 }, /* PD17 */
/* PD16 */ { 0, 1, 0, 1, 0, 0 }, /* PD16 */
#if defined(CONFIG_SOFT_I2C)
/* PD15 */ { 1, 0, 0, 1, 1, 1 }, /* I2C SDA */
/* PD14 */ { 1, 0, 0, 1, 1, 1 }, /* I2C SCL */
#else
#if defined(CONFIG_HARD_I2C)
/* PD15 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SDA */
/* PD14 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SCL */
#else /* normal I/O port pins */
/* PD15 */ { 0, 1, 1, 0, 1, 0 }, /* I2C SDA */
/* PD14 */ { 0, 1, 1, 0, 1, 0 }, /* I2C SCL */
#endif
#endif
/* PD13 */ { 0, 0, 0, 0, 0, 0 }, /* PD13 */
/* PD12 */ { 0, 0, 0, 0, 0, 0 }, /* PD12 */
/* PD11 */ { 0, 0, 0, 0, 0, 0 }, /* PD11 */
/* PD10 */ { 0, 0, 0, 0, 0, 0 }, /* PD10 */
/* PD9 */ { 0, 1, 0, 1, 0, 0 }, /* PD9 */
/* PD8 */ { 0, 1, 0, 0, 0, 0 }, /* PD8 */
/* PD7 */ { 0, 0, 0, 1, 0, 1 }, /* PD7 */
/* PD6 */ { 0, 0, 0, 1, 0, 1 }, /* PD6 */
/* PD5 */ { 0, 0, 0, 1, 0, 1 }, /* PD5 */
/* PD4 */ { 1, 1, 1, 0, 0, 0 }, /* SMC2 RXD */
/* PD3 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
/* PD2 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
/* PD1 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
/* PD0 */ { 0, 0, 0, 0, 0, 0 } /* pin doesn't exist */
}
};
/* ------------------------------------------------------------------------- */
/* Check Board Identity:
*/
int checkboard (void)
{
puts ("Board: PM826\n");
return 0;
}
/* ------------------------------------------------------------------------- */
/* Try SDRAM initialization with P/LSDMR=sdmr and ORx=orx
*
* This routine performs standard 8260 initialization sequence
* and calculates the available memory size. It may be called
* several times to try different SDRAM configurations on both
* 60x and local buses.
*/
static long int try_init (volatile memctl8260_t * memctl, ulong sdmr,
ulong orx, volatile uchar * base)
{
volatile uchar c = 0xff;
volatile ulong cnt, val;
volatile ulong *addr;
volatile uint *sdmr_ptr;
volatile uint *orx_ptr;
int i;
ulong save[32]; /* to make test non-destructive */
ulong maxsize;
/* We must be able to test a location outsize the maximum legal size
* to find out THAT we are outside; but this address still has to be
* mapped by the controller. That means, that the initial mapping has
* to be (at least) twice as large as the maximum expected size.
*/
maxsize = (1 + (~orx | 0x7fff)) / 2;
sdmr_ptr = &memctl->memc_psdmr;
orx_ptr = &memctl->memc_or2;
*orx_ptr = orx;
/*
* Quote from 8260 UM (10.4.2 SDRAM Power-On Initialization, 10-35):
*
* "At system reset, initialization software must set up the
* programmable parameters in the memory controller banks registers
* (ORx, BRx, P/LSDMR). After all memory parameters are configured,
* system software should execute the following initialization sequence
* for each SDRAM device.
*
* 1. Issue a PRECHARGE-ALL-BANKS command
* 2. Issue eight CBR REFRESH commands
* 3. Issue a MODE-SET command to initialize the mode register
*
* The initial commands are executed by setting P/LSDMR[OP] and
* accessing the SDRAM with a single-byte transaction."
*
* The appropriate BRx/ORx registers have already been set when we
* get here. The SDRAM can be accessed at the address CFG_SDRAM_BASE.
*/
*sdmr_ptr = sdmr | PSDMR_OP_PREA;
*base = c;
*sdmr_ptr = sdmr | PSDMR_OP_CBRR;
for (i = 0; i < 8; i++)
*base = c;
*sdmr_ptr = sdmr | PSDMR_OP_MRW;
*(base + CFG_MRS_OFFS) = c; /* setting MR on address lines */
*sdmr_ptr = sdmr | PSDMR_OP_NORM | PSDMR_RFEN;
*base = c;
/*
* 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
*/
i = 0;
for (cnt = maxsize / sizeof (long); cnt > 0; cnt >>= 1) {
addr = (volatile ulong *) base + cnt; /* pointer arith! */
save[i++] = *addr;
*addr = ~cnt;
}
addr = (volatile ulong *) base;
save[i] = *addr;
*addr = 0;
if ((val = *addr) != 0) {
*addr = save[i];
return (0);
}
for (cnt = 1; cnt <= maxsize / sizeof (long); cnt <<= 1) {
addr = (volatile ulong *) base + cnt; /* pointer arith! */
val = *addr;
*addr = save[--i];
if (val != ~cnt) {
/* Write the actual size to ORx
*/
*orx_ptr = orx | ~(cnt * sizeof (long) - 1);
return (cnt * sizeof (long));
}
}
return (maxsize);
}
long int initdram (int board_type)
{
volatile immap_t *immap = (immap_t *) CFG_IMMR;
volatile memctl8260_t *memctl = &immap->im_memctl;
#ifndef CFG_RAMBOOT
ulong size8, size9;
#endif
ulong psize = 32 * 1024 * 1024;
memctl->memc_psrt = CFG_PSRT;
memctl->memc_mptpr = CFG_MPTPR;
#ifndef CFG_RAMBOOT
size8 = try_init (memctl, CFG_PSDMR_8COL, CFG_OR2_8COL,
(uchar *) CFG_SDRAM_BASE);
size9 = try_init (memctl, CFG_PSDMR_9COL, CFG_OR2_9COL,
(uchar *) CFG_SDRAM_BASE);
if (size8 < size9) {
psize = size9;
printf ("(60x:9COL) ");
} else {
psize = try_init (memctl, CFG_PSDMR_8COL, CFG_OR2_8COL,
(uchar *) CFG_SDRAM_BASE);
printf ("(60x:8COL) ");
}
#endif
return (psize);
}
#if (CONFIG_COMMANDS & CFG_CMD_DOC)
extern void doc_probe (ulong physadr);
void doc_init (void)
{
doc_probe (CFG_DOC_BASE);
}
#endif
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