174 lines
3.9 KiB
C
174 lines
3.9 KiB
C
/*
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* (C) Copyright 2001
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* Rob Taylor, Flying Pig Systems. robt@flyingpig.com.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <mpc824x.h>
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#include <asm/processor.h>
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#include <pci.h>
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int sysControlDisplay(int digit, uchar ascii_code);
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extern void Plx9030Init(void);
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/* We have to clear the initial data area here. Couldn't have done it
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* earlier because DRAM had not been initialized.
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*/
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int board_pre_init(void)
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{
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/* enable DUAL UART Mode on CPC45 */
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*(uchar*)DUART_DCR |= 0x1; /* set DCM bit */
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return 0;
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}
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int checkboard(void)
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{
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/*
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char revision = BOARD_REV;
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*/
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ulong busfreq = get_bus_freq(0);
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char buf[32];
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printf("CPC45 ");
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/*
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printf("Revision %d ", revision);
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*/
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printf("Local Bus at %s MHz\n", strmhz(buf, busfreq));
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return 0;
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}
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long int initdram(int board_type)
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{
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int i, cnt;
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volatile uchar * base = CFG_SDRAM_BASE;
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volatile ulong * addr;
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ulong save[32];
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ulong val, ret = 0;
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for (i=0, cnt=(CFG_MAX_RAM_SIZE / sizeof(long)) >> 1; cnt > 0; cnt >>= 1) {
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addr = (volatile ulong *)base + cnt;
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save[i++] = *addr;
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*addr = ~cnt;
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}
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addr = (volatile ulong *)base;
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save[i] = *addr;
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*addr = 0;
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if (*addr != 0) {
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*addr = save[i];
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goto Done;
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}
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for (cnt = 1; cnt <= CFG_MAX_RAM_SIZE / sizeof(long); cnt <<= 1) {
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addr = (volatile ulong *)base + cnt;
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val = *addr;
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*addr = save[--i];
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if (val != ~cnt) {
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ulong new_bank0_end = cnt * sizeof(long) - 1;
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ulong mear1 = mpc824x_mpc107_getreg(MEAR1);
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ulong emear1 = mpc824x_mpc107_getreg(EMEAR1);
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mear1 = (mear1 & 0xFFFFFF00) |
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((new_bank0_end & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT);
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emear1 = (emear1 & 0xFFFFFF00) |
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((new_bank0_end & MICR_ADDR_MASK) >> MICR_EADDR_SHIFT);
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mpc824x_mpc107_setreg(MEAR1, mear1);
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mpc824x_mpc107_setreg(EMEAR1, emear1);
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ret = cnt * sizeof(long);
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goto Done;
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}
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}
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ret = CFG_MAX_RAM_SIZE;
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Done:
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return ret;
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}
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/*
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* Initialize PCI Devices, report devices found.
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*/
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#ifndef CONFIG_PCI_PNP
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static struct pci_config_table pci_sandpoint_config_table[] = {
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{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 0x0f, PCI_ANY_ID,
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pci_cfgfunc_config_device, { PCI_ENET0_IOADDR,
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PCI_ENET0_MEMADDR,
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PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER }},
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{ }
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};
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#endif
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struct pci_controller hose = {
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#ifndef CONFIG_PCI_PNP
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config_table: pci_sandpoint_config_table,
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#endif
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};
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void pci_init_board(void)
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{
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pci_mpc824x_init(&hose);
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/* init PCI_to_LOCAL Bus BRIDGE */
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Plx9030Init();
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sysControlDisplay(0,' ');
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sysControlDisplay(1,'C');
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sysControlDisplay(2,'P');
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sysControlDisplay(3,'C');
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sysControlDisplay(4,' ');
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sysControlDisplay(5,'4');
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sysControlDisplay(6,'5');
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sysControlDisplay(7,' ');
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}
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/**************************************************************************
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*
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* sysControlDisplay - controls one of the Alphanum. Display digits.
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*
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* This routine will write an ASCII character to the display digit requested.
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*
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* SEE ALSO:
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*
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* RETURNS: NA
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*/
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int sysControlDisplay
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(
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int digit, /* number of digit 0..7 */
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uchar ascii_code /* ASCII code */
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)
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{
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if ((digit < 0) || (digit > 7))
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return (-1);
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*((volatile uchar*)(DISP_CHR_RAM + digit)) = ascii_code;
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return (0);
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}
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