3 * Thomas.Lange@corelatus.se
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
26 #include <asm/au1x00.h>
27 #include <asm/mipsregs.h>
29 long int initdram(int board_type)
31 /* Sdram is setup by assembler code */
32 /* If memory could be changed, we should return the true value here */
36 #define BCSR_PCMCIA_PC0DRVEN 0x0010
37 #define BCSR_PCMCIA_PC0RST 0x0080
39 /* In cpu/mips/cpu.c */
40 void write_one_tlb( int index, u32 pagemask, u32 hi, u32 low0, u32 low1 );
45 volatile u32 *pcmcia_bcsr = (u32*)(DB1000_BCSR_ADDR+0x10);
46 volatile u32 *phy = (u32*)(DB1000_BCSR_ADDR+0xC);
47 volatile u32 *sys_counter = (volatile u32*)SYS_COUNTER_CNTRL;
50 *sys_counter = 0x100; /* Enable 32 kHz oscillator for RTC/TOY */
52 proc_id = read_32bit_cp0_register(CP0_PRID);
56 puts("Board: Merlot (DbAu1000)\n");
57 printf("CPU: Au1000 396 MHz, id: 0x%02x, rev: 0x%02x\n",
58 (proc_id>>8)&0xFF,proc_id&0xFF);
61 printf("Unsupported cpu %d, proc_id=0x%x\n",proc_id>>24,proc_id);
63 #ifdef CONFIG_IDE_PCMCIA
64 /* Enable 3.3 V on slot 0 ( VCC )
67 *pcmcia_bcsr = status;
69 status |= BCSR_PCMCIA_PC0DRVEN;
70 *pcmcia_bcsr = status;
75 status |= BCSR_PCMCIA_PC0RST;
76 *pcmcia_bcsr = status;
81 /* PCMCIA is on a 36 bit physical address.
82 We need to map it into a 32 bit addresses */
85 /* We dont need theese unless we run whole pcmcia package */
86 write_one_tlb(20, /* index */
87 0x01ffe000, /* Pagemask, 16 MB pages */
88 CFG_PCMCIA_IO_BASE, /* Hi */
90 0x3C200017); /* Lo1 */
92 write_one_tlb(21, /* index */
93 0x01ffe000, /* Pagemask, 16 MB pages */
94 CFG_PCMCIA_ATTR_BASE, /* Hi */
96 0x3D200017); /* Lo1 */
98 write_one_tlb(22, /* index */
99 0x01ffe000, /* Pagemask, 16 MB pages */
100 CFG_PCMCIA_MEM_ADDR, /* Hi */
101 0x3E000017, /* Lo0 */
102 0x3E200017); /* Lo1 */
104 /* Release reset of ethernet PHY chips */
105 /* Always do this, because linux does not know about it */