projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
| d8b2823e | 33 | #include "regs-sys.h" |
| a09e64fb | 34 | #include <mach/regs-misc.h> |
| c53c9cf6 AV |
35 | |
| 36 | ||
| 6ad7313b | 37 | static struct map_desc ks8695_io_desc[] __initdata = { |
| c53c9cf6 | 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 | } |