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Diffstat (limited to 'board/cpc45/cpc45.c')
| -rwxr-xr-x | board/cpc45/cpc45.c | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/board/cpc45/cpc45.c b/board/cpc45/cpc45.c new file mode 100755 index 0000000..51b0085 --- /dev/null +++ b/board/cpc45/cpc45.c @@ -0,0 +1,275 @@ +/* + * (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 (CONFIG_COMMANDS & CFG_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 /* CFG_CMD_PCMCIA */ + +# 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 |