mirror of
https://github.com/AsahiLinux/u-boot
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111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
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/*
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* (C) Copyright 2003
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* Thomas.Lange@corelatus.se
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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 <command.h>
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#include <asm/au1x00.h>
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#include <asm/mipsregs.h>
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long int initdram(int board_type)
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{
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/* Sdram is setup by assembler code */
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/* If memory could be changed, we should return the true value here */
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return 64*1024*1024;
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}
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#define BCSR_PCMCIA_PC0DRVEN 0x0010
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#define BCSR_PCMCIA_PC0RST 0x0080
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/* In cpu/mips/cpu.c */
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void write_one_tlb( int index, u32 pagemask, u32 hi, u32 low0, u32 low1 );
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int checkboard (void)
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{
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u16 status;
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volatile u32 *pcmcia_bcsr = (u32*)(DB1000_BCSR_ADDR+0x10);
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volatile u32 *phy = (u32*)(DB1000_BCSR_ADDR+0xC);
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volatile u32 *sys_counter = (volatile u32*)SYS_COUNTER_CNTRL;
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u32 proc_id;
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*sys_counter = 0x100; /* Enable 32 kHz oscillator for RTC/TOY */
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proc_id = read_32bit_cp0_register(CP0_PRID);
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switch(proc_id>>24){
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case 0:
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puts("Board: Merlot (DbAu1000)\n");
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printf("CPU: Au1000 396 MHz, id: 0x%02x, rev: 0x%02x\n",
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(proc_id>>8)&0xFF,proc_id&0xFF);
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break;
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default:
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printf("Unsupported cpu %d, proc_id=0x%x\n",proc_id>>24,proc_id);
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}
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#ifdef CONFIG_IDE_PCMCIA
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/* Enable 3.3 V on slot 0 ( VCC )
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No 5V */
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status = 4;
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*pcmcia_bcsr = status;
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status |= BCSR_PCMCIA_PC0DRVEN;
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*pcmcia_bcsr = status;
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au_sync();
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udelay(300*1000);
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status |= BCSR_PCMCIA_PC0RST;
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*pcmcia_bcsr = status;
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au_sync();
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udelay(100*1000);
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/* PCMCIA is on a 36 bit physical address.
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We need to map it into a 32 bit addresses */
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#if 0
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/* We dont need theese unless we run whole pcmcia package */
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write_one_tlb(20, /* index */
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0x01ffe000, /* Pagemask, 16 MB pages */
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CFG_PCMCIA_IO_BASE, /* Hi */
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0x3C000017, /* Lo0 */
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0x3C200017); /* Lo1 */
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write_one_tlb(21, /* index */
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0x01ffe000, /* Pagemask, 16 MB pages */
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CFG_PCMCIA_ATTR_BASE, /* Hi */
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0x3D000017, /* Lo0 */
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0x3D200017); /* Lo1 */
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#endif
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write_one_tlb(22, /* index */
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0x01ffe000, /* Pagemask, 16 MB pages */
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CFG_PCMCIA_MEM_ADDR, /* Hi */
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0x3E000017, /* Lo0 */
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0x3E200017); /* Lo1 */
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/* Release reset of ethernet PHY chips */
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/* Always do this, because linux does not know about it */
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*phy = 3;
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return 0;
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#endif
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}
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