322 lines
13 KiB
C
322 lines
13 KiB
C
/*
|
|
* (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>
|
|
#include "cpu86.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 MII COL */
|
|
/* PA30 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 MII CRS */
|
|
/* PA29 */ { 1, 1, 1, 1, 0, 0 }, /* FCC1 MII TX_ER */
|
|
/* PA28 */ { 1, 1, 1, 1, 0, 0 }, /* FCC1 MII TX_EN */
|
|
/* PA27 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 MII RX_DV */
|
|
/* PA26 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 MII RX_ER */
|
|
/* PA25 */ { 1, 0, 0, 1, 0, 0 }, /* FCC2 MII MDIO */
|
|
/* PA24 */ { 1, 0, 0, 1, 0, 0 }, /* FCC2 MII MDC */
|
|
/* PA23 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1 MII MDIO */
|
|
/* PA22 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1 MII MDC */
|
|
/* PA21 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 MII TxD[3] */
|
|
/* PA20 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 MII TxD[2] */
|
|
/* PA19 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 MII TxD[1] */
|
|
/* PA18 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 MII TxD[0] */
|
|
/* PA17 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RxD[0] */
|
|
/* PA16 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RxD[1] */
|
|
/* PA15 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RxD[2] */
|
|
/* PA14 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RxD[3] */
|
|
/* PA13 */ { 1, 0, 0, 1, 0, 0 }, /* FCC2 MII TXSL1 */
|
|
/* PA12 */ { 1, 0, 0, 1, 0, 1 }, /* FCC2 MII TXSL0 */
|
|
/* PA11 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1 MII TXSL1 */
|
|
/* PA10 */ { 1, 0, 0, 1, 0, 1 }, /* FCC1 MII TXSL0 */
|
|
/* PA9 */ { 0, 1, 0, 1, 0, 0 }, /* SMC2 TXD */
|
|
/* PA8 */ { 0, 1, 0, 0, 0, 0 }, /* SMC2 RXD */
|
|
/* PA7 */ { 0, 0, 0, 0, 0, 0 }, /* PA7 */
|
|
/* PA6 */ { 1, 0, 0, 1, 0, 1 }, /* FCC2 MII PAUSE */
|
|
/* PA5 */ { 1, 0, 0, 1, 0, 1 }, /* FCC1 MII PAUSE */
|
|
/* PA4 */ { 1, 0, 0, 1, 0, 0 }, /* FCC2 MII PWRDN */
|
|
/* PA3 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1 MII PWRDN */
|
|
/* PA2 */ { 0, 0, 0, 0, 0, 0 }, /* PA2 */
|
|
/* PA1 */ { 1, 0, 0, 0, 0, 0 }, /* FCC2 MII MDINT */
|
|
/* PA0 */ { 1, 0, 0, 1, 0, 0 } /* FCC1 MII MDINT */
|
|
},
|
|
|
|
/* Port B configuration */
|
|
{ /* conf ppar psor pdir podr pdat */
|
|
/* PB31 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TX_ER */
|
|
/* PB30 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RX_DV */
|
|
/* PB29 */ { 1, 1, 1, 1, 0, 0 }, /* FCC2 MII TX_EN */
|
|
/* PB28 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RX_ER */
|
|
/* PB27 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII COL */
|
|
/* PB26 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII CRS */
|
|
/* PB25 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[3] */
|
|
/* PB24 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[2] */
|
|
/* PB23 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[1] */
|
|
/* PB22 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[0] */
|
|
/* PB21 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[0] */
|
|
/* PB20 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[1] */
|
|
/* PB19 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[2] */
|
|
/* PB18 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[3] */
|
|
/* PB17 */ { 0, 0, 0, 0, 0, 0 }, /* PB17 */
|
|
/* PB16 */ { 0, 0, 0, 0, 0, 0 }, /* PB16 */
|
|
/* PB15 */ { 0, 0, 0, 0, 0, 0 }, /* PB15 */
|
|
/* PB14 */ { 0, 0, 0, 0, 0, 0 }, /* PB14 */
|
|
/* 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 */ { 0, 0, 0, 0, 0, 0 }, /* PB8 */
|
|
/* 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 }, /* PB3 */
|
|
/* PB2 */ { 0, 0, 0, 0, 0, 0 }, /* PB2 */
|
|
/* PB1 */ { 0, 0, 0, 0, 0, 0 }, /* PB1 */
|
|
/* PB0 */ { 0, 0, 0, 0, 0, 0 } /* PB0 */
|
|
},
|
|
|
|
/* Port C */
|
|
{ /* conf ppar psor pdir podr pdat */
|
|
/* PC31 */ { 0, 0, 0, 0, 0, 0 }, /* PC31 */
|
|
/* PC30 */ { 0, 0, 0, 0, 0, 0 }, /* PC30 */
|
|
/* PC29 */ { 1, 0, 0, 0, 0, 0 }, /* SCC1 CTS */
|
|
/* PC28 */ { 1, 0, 0, 0, 0, 0 }, /* SCC2 CTS */
|
|
/* PC27 */ { 0, 0, 0, 0, 0, 0 }, /* PC27 */
|
|
/* PC26 */ { 0, 0, 0, 0, 0, 0 }, /* PC26 */
|
|
/* PC25 */ { 0, 0, 0, 0, 0, 0 }, /* PC25 */
|
|
/* PC24 */ { 0, 0, 0, 0, 0, 0 }, /* PC24 */
|
|
/* PC23 */ { 0, 0, 0, 0, 0, 0 }, /* FDC37C78 DACFD */
|
|
/* PC22 */ { 0, 0, 0, 0, 0, 0 }, /* FDC37C78 DNFD */
|
|
/* PC21 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RX_CLK */
|
|
/* PC20 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII TX_CLK */
|
|
/* PC19 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RX_CLK */
|
|
/* PC18 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII TX_CLK */
|
|
/* PC17 */ { 0, 0, 0, 0, 0, 0 }, /* PC17 */
|
|
/* PC16 */ { 0, 0, 0, 0, 0, 0 }, /* PC16 */
|
|
/* PC15 */ { 0, 0, 0, 0, 0, 0 }, /* PC15 */
|
|
/* PC14 */ { 0, 0, 0, 0, 0, 0 }, /* PC14 */
|
|
/* PC13 */ { 0, 0, 0, 0, 0, 0 }, /* PC13 */
|
|
/* PC12 */ { 0, 0, 0, 0, 0, 0 }, /* PC12 */
|
|
/* PC11 */ { 0, 0, 0, 0, 0, 0 }, /* PC11 */
|
|
/* PC10 */ { 0, 0, 0, 0, 0, 0 }, /* PC10 */
|
|
/* PC9 */ { 0, 0, 0, 0, 0, 0 }, /* FC9 */
|
|
/* PC8 */ { 0, 0, 0, 0, 0, 0 }, /* PC8 */
|
|
/* PC7 */ { 0, 0, 0, 0, 0, 0 }, /* PC7 */
|
|
/* PC6 */ { 0, 0, 0, 0, 0, 0 }, /* PC6 */
|
|
/* PC5 */ { 0, 0, 0, 0, 0, 0 }, /* PC5 */
|
|
/* PC4 */ { 0, 0, 0, 0, 0, 0 }, /* PC4 */
|
|
/* PC3 */ { 0, 0, 0, 0, 0, 0 }, /* PC3 */
|
|
/* PC2 */ { 0, 0, 0, 0, 0, 0 }, /* PC2 */
|
|
/* PC1 */ { 0, 0, 0, 0, 0, 0 }, /* PC1 */
|
|
/* PC0 */ { 0, 0, 0, 0, 0, 0 }, /* FDC37C78 DRQFD */
|
|
},
|
|
|
|
/* Port D */
|
|
{ /* conf ppar psor pdir podr pdat */
|
|
/* PD31 */ { 1, 1, 0, 0, 0, 0 }, /* SCC1 RXD */
|
|
/* PD30 */ { 1, 1, 1, 1, 0, 0 }, /* SCC1 TXD */
|
|
/* PD29 */ { 1, 0, 0, 1, 0, 0 }, /* SCC1 RTS */
|
|
/* PD28 */ { 1, 1, 0, 0, 0, 0 }, /* SCC2 RXD */
|
|
/* PD27 */ { 1, 1, 0, 1, 0, 0 }, /* SCC2 TXD */
|
|
/* PD26 */ { 1, 0, 0, 1, 0, 0 }, /* SCC2 RTS */
|
|
/* PD25 */ { 0, 0, 0, 0, 0, 0 }, /* PD25 */
|
|
/* PD24 */ { 0, 0, 0, 0, 0, 0 }, /* PD24 */
|
|
/* PD23 */ { 0, 0, 0, 0, 0, 0 }, /* PD23 */
|
|
/* PD22 */ { 0, 0, 0, 0, 0, 0 }, /* PD22 */
|
|
/* PD21 */ { 0, 0, 0, 0, 0, 0 }, /* PD21 */
|
|
/* PD20 */ { 0, 0, 0, 0, 0, 0 }, /* PD20 */
|
|
/* PD19 */ { 0, 0, 0, 0, 0, 0 }, /* PD19 */
|
|
/* PD18 */ { 0, 0, 0, 0, 0, 0 }, /* PD18 */
|
|
/* PD17 */ { 0, 0, 0, 0, 0, 0 }, /* PD17 */
|
|
/* PD16 */ { 0, 0, 0, 0, 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 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SDA */
|
|
/* PD14 */ { 1, 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 */ { 1, 1, 0, 1, 0, 0 }, /* SMC1 TXD */
|
|
/* PD8 */ { 1, 1, 0, 0, 0, 0 }, /* SMC1 RXD */
|
|
/* PD7 */ { 0, 0, 0, 0, 0, 0 }, /* PD7 */
|
|
/* PD6 */ { 0, 0, 0, 0, 0, 0 }, /* PD6 */
|
|
/* PD5 */ { 0, 0, 0, 0, 0, 0 }, /* PD5 */
|
|
/* PD4 */ { 0, 0, 0, 0, 0, 0 }, /* PD4 */
|
|
/* PD3 */ { 0, 0, 0, 0, 0, 0 }, /* PD3 */
|
|
/* PD2 */ { 0, 0, 0, 0, 0, 0 }, /* PD2 */
|
|
/* PD1 */ { 0, 0, 0, 0, 0, 0 }, /* PD1 */
|
|
/* PD0 */ { 0, 0, 0, 0, 0, 0 } /* PD0 */
|
|
}
|
|
};
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
/* Check Board Identity:
|
|
*/
|
|
int checkboard (void)
|
|
{
|
|
printf ("Board: CPU86 (Rev %02x)\n", CPU86_REV);
|
|
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 uint *sdmr_ptr;
|
|
volatile uint *orx_ptr;
|
|
ulong maxsize, size;
|
|
int i;
|
|
|
|
/* 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;
|
|
|
|
/* Since CFG_SDRAM_BASE is always 0 (??), we assume that
|
|
* we are configuring CS1 if base != 0
|
|
*/
|
|
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;
|
|
|
|
size = get_ram_size((long *)base, maxsize);
|
|
|
|
*orx_ptr = orx | ~(size - 1);
|
|
|
|
return (size);
|
|
}
|
|
|
|
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
|
|
long psize;
|
|
|
|
psize = 32 * 1024 * 1024;
|
|
|
|
memctl->memc_mptpr = CFG_MPTPR;
|
|
memctl->memc_psrt = CFG_PSRT;
|
|
|
|
#ifndef CFG_RAMBOOT
|
|
/* 60x SDRAM setup:
|
|
*/
|
|
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 /* CFG_RAMBOOT */
|
|
|
|
icache_enable ();
|
|
|
|
return (psize);
|
|
}
|
|
|
|
#if (CONFIG_COMMANDS & CFG_CMD_DOC)
|
|
extern void doc_probe (ulong physadr);
|
|
void doc_init (void)
|
|
{
|
|
doc_probe (CFG_DOC_BASE);
|
|
}
|
|
#endif
|