/* * (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