1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * arch/sh/kernel/cpu/sh2a/probe.c
4 *
5 * CPU Subtype Probing for SH-2A.
6 *
7 * Copyright (C) 2004 - 2007 Paul Mundt
8 */
9 #include <linux/init.h>
10 #include <asm/processor.h>
11 #include <asm/cache.h>
12
13 void cpu_probe(void)
14 {
15 boot_cpu_data.family = CPU_FAMILY_SH2A;
16
17 /* All SH-2A CPUs have support for 16 and 32-bit opcodes.. */
18 boot_cpu_data.flags |= CPU_HAS_OP32;
19
20 #if defined(CONFIG_CPU_SUBTYPE_SH7201)
21 boot_cpu_data.type = CPU_SH7201;
22 boot_cpu_data.flags |= CPU_HAS_FPU;
23 #elif defined(CONFIG_CPU_SUBTYPE_SH7203)
24 boot_cpu_data.type = CPU_SH7203;
25 boot_cpu_data.flags |= CPU_HAS_FPU;
26 #elif defined(CONFIG_CPU_SUBTYPE_SH7263)
27 boot_cpu_data.type = CPU_SH7263;
28 boot_cpu_data.flags |= CPU_HAS_FPU;
29 #elif defined(CONFIG_CPU_SUBTYPE_SH7264)
30 boot_cpu_data.type = CPU_SH7264;
31 boot_cpu_data.flags |= CPU_HAS_FPU;
32 #elif defined(CONFIG_CPU_SUBTYPE_SH7269)
33 boot_cpu_data.type = CPU_SH7269;
34 boot_cpu_data.flags |= CPU_HAS_FPU;
35 #elif defined(CONFIG_CPU_SUBTYPE_SH7206)
36 boot_cpu_data.type = CPU_SH7206;
37 boot_cpu_data.flags |= CPU_HAS_DSP;
38 #elif defined(CONFIG_CPU_SUBTYPE_MXG)
39 boot_cpu_data.type = CPU_MXG;
40 boot_cpu_data.flags |= CPU_HAS_DSP;
41 #endif
42
43 boot_cpu_data.dcache.ways = 4;
44 boot_cpu_data.dcache.way_incr = (1 << 11);
45 boot_cpu_data.dcache.sets = 128;
46 boot_cpu_data.dcache.entry_shift = 4;
47 boot_cpu_data.dcache.linesz = L1_CACHE_BYTES;
48 boot_cpu_data.dcache.flags = 0;
49
50 /*
51 * The icache is the same as the dcache as far as this setup is
52 * concerned. The only real difference in hardware is that the icache
53 * lacks the U bit that the dcache has, none of this has any bearing
54 * on the cache info.
55 */
56 boot_cpu_data.icache = boot_cpu_data.dcache;
57 }
58
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.