1 /*
2 * arch/mips/au1000/common/cputable.c
3 *
4 * Copyright (C) 2004 Dan Malek (dan@embeddededge.com)
5 * Copied from PowerPC and updated for Alchemy Au1xxx processors.
6 *
7 * Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org)
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version
12 * 2 of the License, or (at your option) any later version.
13 */
14
15 #include <linux/config.h>
16 #include <linux/string.h>
17 #include <linux/sched.h>
18 #include <linux/threads.h>
19 #include <linux/init.h>
20 #include <asm/au1000.h>
21
22 struct cpu_spec* cur_cpu_spec[NR_CPUS];
23
24 /* With some thought, we can probably use the mask to reduce the
25 * size of the table.
26 */
27 struct cpu_spec cpu_specs[] = {
28 { 0xffffffff, 0x00030100, "Au1000 DA", 1, 0 },
29 { 0xffffffff, 0x00030201, "Au1000 HA", 1, 0 },
30 { 0xffffffff, 0x00030202, "Au1000 HB", 1, 0 },
31 { 0xffffffff, 0x00030203, "Au1000 HC", 1, 1 },
32 { 0xffffffff, 0x00030204, "Au1000 HD", 1, 1 },
33 { 0xffffffff, 0x01030200, "Au1500 AB", 1, 1 },
34 { 0xffffffff, 0x01030201, "Au1500 AC", 0, 1 },
35 { 0xffffffff, 0x01030202, "Au1500 AD", 0, 1 },
36 { 0xffffffff, 0x02030200, "Au1100 AB", 1, 1 },
37 { 0xffffffff, 0x02030201, "Au1100 BA", 1, 1 },
38 { 0xffffffff, 0x02030202, "Au1100 BC", 1, 1 },
39 { 0xffffffff, 0x02030203, "Au1100 BD", 0, 1 },
40 { 0xffffffff, 0x02030204, "Au1100 BE", 0, 1 },
41 { 0xffffffff, 0x03030200, "Au1550 AA", 0, 1 },
42 { 0xffffffff, 0x04030200, "Au1200 AA", 0, 1 },
43 { 0x00000000, 0x00000000, "Unknown Au1xxx", 1, 0 },
44 };
45
46 void
set_cpuspec(void)47 set_cpuspec(void)
48 {
49 struct cpu_spec *sp;
50 u32 prid;
51
52 prid = read_c0_prid();
53 sp = cpu_specs;
54 while ((prid & sp->prid_mask) != sp->prid_value)
55 sp++;
56 cur_cpu_spec[0] = sp;
57 }
58