diff options
Diffstat (limited to 'board/cpc45/cpc45.c')
| -rw-r--r-- | board/cpc45/cpc45.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/board/cpc45/cpc45.c b/board/cpc45/cpc45.c new file mode 100644 index 0000000..01067f5 --- /dev/null +++ b/board/cpc45/cpc45.c @@ -0,0 +1,173 @@ +/* + * (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 <pci.h> + +int sysControlDisplay(int digit, uchar ascii_code); +extern void Plx9030Init(void); + + /* We have to clear the initial data area here. Couldn't have done it + * earlier because DRAM had not been initialized. + */ +int board_pre_init(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]; + + printf("CPC45 "); +/* + printf("Revision %d ", revision); +*/ + printf("Local Bus at %s MHz\n", strmhz(buf, busfreq)); + + return 0; +} + +long int initdram(int board_type) +{ + int i, cnt; + volatile uchar * base = CFG_SDRAM_BASE; + volatile ulong * addr; + ulong save[32]; + ulong val, ret = 0; + + for (i=0, cnt=(CFG_MAX_RAM_SIZE / sizeof(long)) >> 1; cnt > 0; cnt >>= 1) { + + addr = (volatile ulong *)base + cnt; + save[i++] = *addr; + *addr = ~cnt; + } + + addr = (volatile ulong *)base; + save[i] = *addr; + *addr = 0; + + if (*addr != 0) { + *addr = save[i]; + goto Done; + } + + for (cnt = 1; cnt <= CFG_MAX_RAM_SIZE / sizeof(long); cnt <<= 1) { + addr = (volatile ulong *)base + cnt; + val = *addr; + *addr = save[--i]; + if (val != ~cnt) { + ulong new_bank0_end = cnt * sizeof(long) - 1; + ulong mear1 = mpc824x_mpc107_getreg(MEAR1); + ulong emear1 = mpc824x_mpc107_getreg(EMEAR1); + mear1 = (mear1 & 0xFFFFFF00) | + ((new_bank0_end & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT); + emear1 = (emear1 & 0xFFFFFF00) | + ((new_bank0_end & MICR_ADDR_MASK) >> MICR_EADDR_SHIFT); + mpc824x_mpc107_setreg(MEAR1, mear1); + mpc824x_mpc107_setreg(EMEAR1, emear1); + + ret = cnt * sizeof(long); + goto Done; + } + } + + ret = CFG_MAX_RAM_SIZE; +Done: + return ret; +} + +/* + * Initialize PCI Devices, report devices found. + */ +#ifndef CONFIG_PCI_PNP + +static struct pci_config_table pci_sandpoint_config_table[] = { + { 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 }}, + { } +}; +#endif + + +struct pci_controller hose = { +#ifndef CONFIG_PCI_PNP + config_table: pci_sandpoint_config_table, +#endif +}; + +void pci_init_board(void) +{ + pci_mpc824x_init(&hose); + + /* init PCI_to_LOCAL Bus BRIDGE */ + Plx9030Init(); + + 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); +} + |