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/*
* (C) Copyright 2001
* Rob Taylor, Flying Pig Systems. robt@flyingpig.com.
*
* 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 <mpc824x.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <pci.h>
#include <i2c.h>
int sysControlDisplay(int digit, uchar ascii_code);
extern void Plx9030Init(void);
extern void SPD67290Init(void);
/* We have to clear the initial data area here. Couldn't have done it
* earlier because DRAM had not been initialized.
*/
int board_early_init_f(void)
{
/* enable DUAL UART Mode on CPC45 */
*(uchar*)DUART_DCR |= 0x1; /* set DCM bit */
return 0;
}
int checkboard(void)
{
/*
char revision = BOARD_REV;
*/
ulong busfreq = get_bus_freq(0);
char buf[32];
puts ("CPC45 ");
/*
printf("Revision %d ", revision);
*/
printf("Local Bus at %s MHz\n", strmhz(buf, busfreq));
return 0;
}
long int initdram (int board_type)
{
int m, row, col, bank, i, ref;
unsigned long start, end;
uint32_t mccr1, mccr2;
uint32_t mear1 = 0, emear1 = 0, msar1 = 0, emsar1 = 0;
uint32_t mear2 = 0, emear2 = 0, msar2 = 0, emsar2 = 0;
uint8_t mber = 0;
unsigned int tmp;
i2c_init(CFG_I2C_SPEED, CFG_I2C_SLAVE);
if (i2c_reg_read (0x50, 2) != 0x04)
return 0; /* Memory type */
m = i2c_reg_read (0x50, 5); /* # of physical banks */
row = i2c_reg_read (0x50, 3); /* # of rows */
col = i2c_reg_read (0x50, 4); /* # of columns */
bank = i2c_reg_read (0x50, 17); /* # of logical banks */
ref = i2c_reg_read (0x50, 12); /* refresh rate / type */
CONFIG_READ_WORD(MCCR1, mccr1);
mccr1 &= 0xffff0000;
CONFIG_READ_WORD(MCCR2, mccr2);
mccr2 &= 0xffff0000;
start = CFG_SDRAM_BASE;
end = start + (1 << (col + row + 3) ) * bank - 1;
for (i = 0; i < m; i++) {
mccr1 |= ((row == 13)? 2 : (bank == 4)? 0 : 3) << i * 2;
if (i < 4) {
msar1 |= ((start >> 20) & 0xff) << i * 8;
emsar1 |= ((start >> 28) & 0xff) << i * 8;
mear1 |= ((end >> 20) & 0xff) << i * 8;
emear1 |= ((end >> 28) & 0xff) << i * 8;
} else {
msar2 |= ((start >> 20) & 0xff) << (i-4) * 8;
emsar2 |= ((start >> 28) & 0xff) << (i-4) * 8;
mear2 |= ((end >> 20) & 0xff) << (i-4) * 8;
emear2 |= ((end >> 28) & 0xff) << (i-4) * 8;
}
mber |= 1 << i;
start += (1 << (col + row + 3) ) * bank;
end += (1 << (col + row + 3) ) * bank;
}
for (; i < 8; i++) {
if (i < 4) {
msar1 |= 0xff << i * 8;
emsar1 |= 0x30 << i * 8;
mear1 |= 0xff << i * 8;
emear1 |= 0x30 << i * 8;
} else {
msar2 |= 0xff << (i-4) * 8;
emsar2 |= 0x30 << (i-4) * 8;
mear2 |= 0xff << (i-4) * 8;
emear2 |= 0x30 << (i-4) * 8;
}
}
switch(ref) {
case 0x00:
case 0x80:
tmp = get_bus_freq(0) / 1000000 * 15625 / 1000 - 22;
break;
case 0x01:
case 0x81:
tmp = get_bus_freq(0) / 1000000 * 3900 / 1000 - 22;
break;
case 0x02:
case 0x82:
tmp = get_bus_freq(0) / 1000000 * 7800 / 1000 - 22;
break;
case 0x03:
case 0x83:
tmp = get_bus_freq(0) / 1000000 * 31300 / 1000 - 22;
break;
case 0x04:
case 0x84:
tmp = get_bus_freq(0) / 1000000 * 62500 / 1000 - 22;
break;
case 0x05:
case 0x85:
tmp = get_bus_freq(0) / 1000000 * 125000 / 1000 - 22;
break;
default:
tmp = 0x512;
break;
}
CONFIG_WRITE_WORD(MCCR1, mccr1);
CONFIG_WRITE_WORD(MCCR2, tmp << MCCR2_REFINT_SHIFT);
CONFIG_WRITE_WORD(MSAR1, msar1);
CONFIG_WRITE_WORD(EMSAR1, emsar1);
CONFIG_WRITE_WORD(MEAR1, mear1);
CONFIG_WRITE_WORD(EMEAR1, emear1);
CONFIG_WRITE_WORD(MSAR2, msar2);
CONFIG_WRITE_WORD(EMSAR2, emsar2);
CONFIG_WRITE_WORD(MEAR2, mear2);
CONFIG_WRITE_WORD(EMEAR2, emear2);
CONFIG_WRITE_BYTE(MBER, mber);
return (1 << (col + row + 3) ) * bank * m;
}
/*
* Initialize PCI Devices, report devices found.
*/
static struct pci_config_table pci_cpc45_config_table[] = {
#ifndef CONFIG_PCI_PNP
{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 0x0F, PCI_ANY_ID,
pci_cfgfunc_config_device, { PCI_ENET0_IOADDR,
PCI_ENET0_MEMADDR,
PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER }},
{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 0x0D, PCI_ANY_ID,
pci_cfgfunc_config_device, { PCI_PLX9030_IOADDR,
PCI_PLX9030_MEMADDR,
PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER }},
{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 0x0E, PCI_ANY_ID,
pci_cfgfunc_config_device, { PCMCIA_IO_BASE,
PCMCIA_IO_BASE,
PCI_COMMAND_MEMORY | PCI_COMMAND_IO }},
#endif /*CONFIG_PCI_PNP*/
{ }
};
struct pci_controller hose = {
#ifndef CONFIG_PCI_PNP
config_table: pci_cpc45_config_table,
#endif
};
void pci_init_board(void)
{
pci_mpc824x_init(&hose);
/* init PCI_to_LOCAL Bus BRIDGE */
Plx9030Init();
/* Clear Display */
DISP_CWORD = 0x0;
sysControlDisplay(0,' ');
sysControlDisplay(1,'C');
sysControlDisplay(2,'P');
sysControlDisplay(3,'C');
sysControlDisplay(4,' ');
sysControlDisplay(5,'4');
sysControlDisplay(6,'5');
sysControlDisplay(7,' ');
}
/**************************************************************************
*
* sysControlDisplay - controls one of the Alphanum. Display digits.
*
* This routine will write an ASCII character to the display digit requested.
*
* SEE ALSO:
*
* RETURNS: NA
*/
int sysControlDisplay (int digit, /* number of digit 0..7 */
uchar ascii_code /* ASCII code */
)
{
if ((digit < 0) || (digit > 7))
return (-1);
*((volatile uchar *) (DISP_CHR_RAM + digit)) = ascii_code;
return (0);
}
#if defined(CONFIG_CMD_PCMCIA)
#ifdef CFG_PCMCIA_MEM_ADDR
volatile unsigned char *pcmcia_mem = (unsigned char*)CFG_PCMCIA_MEM_ADDR;
#endif
int pcmcia_init(void)
{
u_int rc;
debug ("Enable PCMCIA " PCMCIA_SLOT_MSG "\n");
rc = i82365_init();
return rc;
}
#endif
# ifdef CONFIG_IDE_LED
void ide_led (uchar led, uchar status)
{
u_char val;
/* We have one PCMCIA slot and use LED H4 for the IDE Interface */
val = readb(BCSR_BASE + 0x04);
if (status) { /* led on */
val |= B_CTRL_LED0;
} else {
val &= ~B_CTRL_LED0;
}
writeb(val, BCSR_BASE + 0x04);
}
# endif
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