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c53c9cf6 AV |
1 | /* |
2 | * arch/arm/mach-ks8695/cpu.c | |
3 | * | |
4 | * Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk> | |
5 | * Copyright (C) 2006 Simtec Electronics | |
6 | * | |
7 | * KS8695 CPU support | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | #include <linux/kernel.h> | |
25 | #include <linux/module.h> | |
26 | #include <linux/init.h> | |
fced80c7 | 27 | #include <linux/io.h> |
c53c9cf6 | 28 | |
a09e64fb | 29 | #include <mach/hardware.h> |
c53c9cf6 AV |
30 | #include <asm/mach/arch.h> |
31 | #include <asm/mach/map.h> | |
32 | ||
a09e64fb RK |
33 | #include <mach/regs-sys.h> |
34 | #include <mach/regs-misc.h> | |
c53c9cf6 AV |
35 | |
36 | ||
37 | static struct __initdata map_desc ks8695_io_desc[] = { | |
38 | { | |
c72ecbec | 39 | .virtual = (unsigned long)KS8695_IO_VA, |
c53c9cf6 AV |
40 | .pfn = __phys_to_pfn(KS8695_IO_PA), |
41 | .length = KS8695_IO_SIZE, | |
42 | .type = MT_DEVICE, | |
43 | } | |
44 | }; | |
45 | ||
46 | static void __init ks8695_processor_info(void) | |
47 | { | |
48 | unsigned long id, rev; | |
49 | ||
50 | id = __raw_readl(KS8695_MISC_VA + KS8695_DID); | |
51 | rev = __raw_readl(KS8695_MISC_VA + KS8695_RID); | |
52 | ||
53 | printk("KS8695 ID=%04lx SubID=%02lx Revision=%02lx\n", (id & DID_ID), (rev & RID_SUBID), (rev & RID_REVISION)); | |
54 | } | |
55 | ||
56 | static unsigned int sysclk[8] = { 125000000, 100000000, 62500000, 50000000, 41700000, 33300000, 31300000, 25000000 }; | |
57 | static unsigned int cpuclk[8] = { 166000000, 166000000, 83000000, 83000000, 55300000, 55300000, 41500000, 41500000 }; | |
58 | ||
59 | static void __init ks8695_clock_info(void) | |
60 | { | |
61 | unsigned int scdc = __raw_readl(KS8695_SYS_VA + KS8695_CLKCON) & CLKCON_SCDC; | |
62 | ||
63 | printk("Clocks: System %u MHz, CPU %u MHz\n", | |
64 | sysclk[scdc] / 1000000, cpuclk[scdc] / 1000000); | |
65 | } | |
66 | ||
67 | void __init ks8695_map_io(void) | |
68 | { | |
69 | iotable_init(ks8695_io_desc, ARRAY_SIZE(ks8695_io_desc)); | |
70 | ||
71 | ks8695_processor_info(); | |
72 | ks8695_clock_info(); | |
73 | } |