linux/arch/arm/mach-mx3/cpu.c
Uwe Kleine-König a9b7a2dd21 imx: mangle addresses after adding the offset
don't use

	IO_ADDRESS($base) + $offset

but

	IO_ADDRESS($base + $offset)

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Holger Schurig <hs4233@mail.mn-solutions.de>
Cc: Rabin Vincent <rabin@rab.in>
Cc: "Agustín Ferrín Pozuelo" <gatoguan-os@yahoo.com>
Cc: Javier Martin <javier.martin@vista-silicon.com>
Cc: Valentin Longchamp <valentin.longchamp@epfl.ch>
Cc: Daniel Mack <daniel@caiaq.de>
Cc: Dmitriy Taychenachev <dimichxp@gmail.com>
2010-01-08 16:45:20 +01:00

58 lines
1.8 KiB
C

/*
* MX3 CPU type detection
*
* Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/module.h>
#include <linux/io.h>
#include <mach/hardware.h>
#include <mach/iim.h>
unsigned int mx31_cpu_rev;
EXPORT_SYMBOL(mx31_cpu_rev);
struct mx3_cpu_type {
u8 srev;
const char *name;
const char *v;
unsigned int rev;
};
static struct mx3_cpu_type mx31_cpu_type[] __initdata = {
{ .srev = 0x00, .name = "i.MX31(L)", .v = "1.0", .rev = CHIP_REV_1_0 },
{ .srev = 0x10, .name = "i.MX31", .v = "1.1", .rev = CHIP_REV_1_1 },
{ .srev = 0x11, .name = "i.MX31L", .v = "1.1", .rev = CHIP_REV_1_1 },
{ .srev = 0x12, .name = "i.MX31", .v = "1.15", .rev = CHIP_REV_1_1 },
{ .srev = 0x13, .name = "i.MX31L", .v = "1.15", .rev = CHIP_REV_1_1 },
{ .srev = 0x14, .name = "i.MX31", .v = "1.2", .rev = CHIP_REV_1_2 },
{ .srev = 0x15, .name = "i.MX31L", .v = "1.2", .rev = CHIP_REV_1_2 },
{ .srev = 0x28, .name = "i.MX31", .v = "2.0", .rev = CHIP_REV_2_0 },
{ .srev = 0x29, .name = "i.MX31L", .v = "2.0", .rev = CHIP_REV_2_0 },
};
void __init mx31_read_cpu_rev(void)
{
u32 i, srev;
/* read SREV register from IIM module */
srev = __raw_readl(IO_ADDRESS(IIM_BASE_ADDR + MXC_IIMSREV));
for (i = 0; i < ARRAY_SIZE(mx31_cpu_type); i++)
if (srev == mx31_cpu_type[i].srev) {
printk(KERN_INFO
"CPU identified as %s, silicon rev %s\n",
mx31_cpu_type[i].name, mx31_cpu_type[i].v);
mx31_cpu_rev = mx31_cpu_type[i].rev;
return;
}
printk(KERN_WARNING "Unknown CPU identifier. srev = %02x\n", srev);
}