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arch
arm
mach-ks8695
cpu.c
Go to the documentation of this file.
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/*
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* arch/arm/mach-ks8695/cpu.c
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*
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* Copyright (C) 2006 Ben Dooks <
[email protected]
>
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* Copyright (C) 2006 Simtec Electronics
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*
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* KS8695 CPU support
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <
linux/init.h
>
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#include <
linux/io.h
>
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#include <mach/hardware.h>
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#include <
asm/mach/arch.h
>
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#include <
asm/mach/map.h
>
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#include <mach/regs-sys.h>
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#include <
mach/regs-misc.h
>
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static
struct
__initdata
map_desc
ks8695_io_desc[] = {
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{
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.virtual = (
unsigned
long
)
KS8695_IO_VA
,
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.pfn =
__phys_to_pfn
(
KS8695_IO_PA
),
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.length =
KS8695_IO_SIZE
,
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.type =
MT_DEVICE
,
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}
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};
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static
void
__init
ks8695_processor_info(
void
)
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{
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unsigned
long
id
,
rev
;
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id
=
__raw_readl
(
KS8695_MISC_VA
+
KS8695_DID
);
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rev =
__raw_readl
(
KS8695_MISC_VA
+
KS8695_RID
);
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printk
(
"KS8695 ID=%04lx SubID=%02lx Revision=%02lx\n"
, (
id
&
DID_ID
), (rev &
RID_SUBID
), (rev &
RID_REVISION
));
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}
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static
unsigned
int
sysclk[8] = { 125000000, 100000000, 62500000, 50000000, 41700000, 33300000, 31300000, 25000000 };
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static
unsigned
int
cpuclk[8] = { 166000000, 166000000, 83000000, 83000000, 55300000, 55300000, 41500000, 41500000 };
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static
void
__init
ks8695_clock_info(
void
)
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{
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unsigned
int
scdc =
__raw_readl
(
KS8695_SYS_VA
+
KS8695_CLKCON
) &
CLKCON_SCDC
;
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printk
(
"Clocks: System %u MHz, CPU %u MHz\n"
,
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sysclk[scdc] / 1000000, cpuclk[scdc] / 1000000);
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}
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void
__init
ks8695_map_io
(
void
)
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{
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iotable_init
(ks8695_io_desc,
ARRAY_SIZE
(ks8695_io_desc));
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ks8695_processor_info();
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ks8695_clock_info();
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}
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