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>
30 phys_size_t initdram(int board_type)
32 /* Sdram is setup by assembler code */
33 /* If memory could be changed, we should return the true value here */
34 return MEM_SIZE*1024*1024;
37 #define BCSR_PCMCIA_PC0DRVEN 0x0010
38 #define BCSR_PCMCIA_PC0RST 0x0080
40 /* In arch/mips/cpu/cpu.c */
41 void write_one_tlb( int index, u32 pagemask, u32 hi, u32 low0, u32 low1 );
45 #ifdef CONFIG_IDE_PCMCIA
47 volatile u32 *pcmcia_bcsr = (u32*)(DB1XX0_BCSR_ADDR+0x10);
48 #endif /* CONFIG_IDE_PCMCIA */
49 volatile u32 *phy = (u32*)(DB1XX0_BCSR_ADDR+0xC);
50 volatile u32 *sys_counter = (volatile u32*)SYS_COUNTER_CNTRL;
53 *sys_counter = 0x100; /* Enable 32 kHz oscillator for RTC/TOY */
55 proc_id = read_c0_prid();
57 switch (proc_id >> 24) {
59 puts ("Board: Merlot (DbAu1000)\n");
60 printf ("CPU: Au1000 396 MHz, id: 0x%02x, rev: 0x%02x\n",
61 (proc_id >> 8) & 0xFF, proc_id & 0xFF);
64 puts ("Board: DbAu1500\n");
65 printf ("CPU: Au1500, id: 0x%02x, rev: 0x%02x\n",
66 (proc_id >> 8) & 0xFF, proc_id & 0xFF);
69 puts ("Board: DbAu1100\n");
70 printf ("CPU: Au1100, id: 0x%02x, rev: 0x%02x\n",
71 (proc_id >> 8) & 0xFF, proc_id & 0xFF);
74 puts ("Board: DbAu1550\n");
75 printf ("CPU: Au1550, id: 0x%02x, rev: 0x%02x\n",
76 (proc_id >> 8) & 0xFF, proc_id & 0xFF);
79 printf ("Unsupported cpu %d, proc_id=0x%x\n", proc_id >> 24, proc_id);
84 #ifdef CONFIG_IDE_PCMCIA
85 /* Enable 3.3 V on slot 0 ( VCC )
88 *pcmcia_bcsr = status;
90 status |= BCSR_PCMCIA_PC0DRVEN;
91 *pcmcia_bcsr = status;
96 status |= BCSR_PCMCIA_PC0RST;
97 *pcmcia_bcsr = status;
102 /* PCMCIA is on a 36 bit physical address.
103 We need to map it into a 32 bit addresses */
106 /* We dont need theese unless we run whole pcmcia package */
107 write_one_tlb(20, /* index */
108 0x01ffe000, /* Pagemask, 16 MB pages */
109 CONFIG_SYS_PCMCIA_IO_BASE, /* Hi */
110 0x3C000017, /* Lo0 */
111 0x3C200017); /* Lo1 */
113 write_one_tlb(21, /* index */
114 0x01ffe000, /* Pagemask, 16 MB pages */
115 CONFIG_SYS_PCMCIA_ATTR_BASE, /* Hi */
116 0x3D000017, /* Lo0 */
117 0x3D200017); /* Lo1 */
119 write_one_tlb(22, /* index */
120 0x01ffe000, /* Pagemask, 16 MB pages */
121 CONFIG_SYS_PCMCIA_MEM_ADDR, /* Hi */
122 0x3E000017, /* Lo0 */
123 0x3E200017); /* Lo1 */
124 #endif /* CONFIG_IDE_PCMCIA */
126 /* Release reset of ethernet PHY chips */
127 /* Always do this, because linux does not know about it */