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);
54 switch (proc_id >> 24) {
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 puts ("Board: DbAu1500\n");
62 printf ("CPU: Au1500, id: 0x%02x, rev: 0x%02x\n",
63 (proc_id >> 8) & 0xFF, proc_id & 0xFF);
66 puts ("Board: DbAu1100\n");
67 printf ("CPU: Au1100, id: 0x%02x, rev: 0x%02x\n",
68 (proc_id >> 8) & 0xFF, proc_id & 0xFF);
71 printf ("Unsupported cpu %d, proc_id=0x%x\n", proc_id >> 24, proc_id);
73 #ifdef CONFIG_IDE_PCMCIA
74 /* Enable 3.3 V on slot 0 ( VCC )
77 *pcmcia_bcsr = status;
79 status |= BCSR_PCMCIA_PC0DRVEN;
80 *pcmcia_bcsr = status;
85 status |= BCSR_PCMCIA_PC0RST;
86 *pcmcia_bcsr = status;
91 /* PCMCIA is on a 36 bit physical address.
92 We need to map it into a 32 bit addresses */
95 /* We dont need theese unless we run whole pcmcia package */
96 write_one_tlb(20, /* index */
97 0x01ffe000, /* Pagemask, 16 MB pages */
98 CFG_PCMCIA_IO_BASE, /* Hi */
100 0x3C200017); /* Lo1 */
102 write_one_tlb(21, /* index */
103 0x01ffe000, /* Pagemask, 16 MB pages */
104 CFG_PCMCIA_ATTR_BASE, /* Hi */
105 0x3D000017, /* Lo0 */
106 0x3D200017); /* Lo1 */
108 write_one_tlb(22, /* index */
109 0x01ffe000, /* Pagemask, 16 MB pages */
110 CFG_PCMCIA_MEM_ADDR, /* Hi */
111 0x3E000017, /* Lo0 */
112 0x3E200017); /* Lo1 */
114 /* Release reset of ethernet PHY chips */
115 /* Always do this, because linux does not know about it */