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-rw-r--r--arch/arm/mach-mx2/Kconfig5
-rw-r--r--arch/arm/mach-mx2/Makefile7
-rw-r--r--arch/arm/mach-mx2/Makefile.boot3
-rw-r--r--arch/arm/mach-mx2/generic.c74
-rw-r--r--arch/arm/mach-mx2/system.c63
5 files changed, 152 insertions, 0 deletions
diff --git a/arch/arm/mach-mx2/Kconfig b/arch/arm/mach-mx2/Kconfig
new file mode 100644
index 000000000000..23def05fea0e
--- /dev/null
+++ b/arch/arm/mach-mx2/Kconfig
@@ -0,0 +1,5 @@
1comment "MX2 family CPU support"
2 depends on ARCH_MX2
3
4comment "MX2 Platforms"
5 depends on ARCH_MX2
diff --git a/arch/arm/mach-mx2/Makefile b/arch/arm/mach-mx2/Makefile
new file mode 100644
index 000000000000..937192dc57a7
--- /dev/null
+++ b/arch/arm/mach-mx2/Makefile
@@ -0,0 +1,7 @@
1#
2# Makefile for the linux kernel.
3#
4
5# Object file lists.
6
7obj-y := system.o generic.o
diff --git a/arch/arm/mach-mx2/Makefile.boot b/arch/arm/mach-mx2/Makefile.boot
new file mode 100644
index 000000000000..696831dcd485
--- /dev/null
+++ b/arch/arm/mach-mx2/Makefile.boot
@@ -0,0 +1,3 @@
1 zreladdr-y := 0xA0008000
2params_phys-y := 0xA0000100
3initrd_phys-y := 0xA0800000
diff --git a/arch/arm/mach-mx2/generic.c b/arch/arm/mach-mx2/generic.c
new file mode 100644
index 000000000000..07875cf00de9
--- /dev/null
+++ b/arch/arm/mach-mx2/generic.c
@@ -0,0 +1,74 @@
1/*
2 * generic.c
3 *
4 * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
18 * MA 02110-1301, USA.
19 */
20
21#include <linux/mm.h>
22#include <linux/init.h>
23#include <asm/hardware.h>
24#include <asm/pgtable.h>
25#include <asm/mach/map.h>
26
27/* MX27 memory map definition */
28static struct map_desc mxc_io_desc[] __initdata = {
29 /*
30 * this fixed mapping covers:
31 * - AIPI1
32 * - AIPI2
33 * - AITC
34 * - ROM Patch
35 * - and some reserved space
36 */
37 {
38 .virtual = AIPI_BASE_ADDR_VIRT,
39 .pfn = __phys_to_pfn(AIPI_BASE_ADDR),
40 .length = AIPI_SIZE,
41 .type = MT_DEVICE
42 },
43 /*
44 * this fixed mapping covers:
45 * - CSI
46 * - ATA
47 */
48 {
49 .virtual = SAHB1_BASE_ADDR_VIRT,
50 .pfn = __phys_to_pfn(SAHB1_BASE_ADDR),
51 .length = SAHB1_SIZE,
52 .type = MT_DEVICE
53 },
54 /*
55 * this fixed mapping covers:
56 * - EMI
57 */
58 {
59 .virtual = X_MEMC_BASE_ADDR_VIRT,
60 .pfn = __phys_to_pfn(X_MEMC_BASE_ADDR),
61 .length = X_MEMC_SIZE,
62 .type = MT_DEVICE
63 }
64};
65
66/*
67 * Initialize the memory map. It is called during the
68 * system startup to create static physical to virtual
69 * memory map for the IO modules.
70 */
71void __init mxc_map_io(void)
72{
73 iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
74}
diff --git a/arch/arm/mach-mx2/system.c b/arch/arm/mach-mx2/system.c
new file mode 100644
index 000000000000..99304645299d
--- /dev/null
+++ b/arch/arm/mach-mx2/system.c
@@ -0,0 +1,63 @@
1/*
2 * Copyright (C) 1999 ARM Limited
3 * Copyright (C) 2000 Deep Blue Solutions Ltd
4 * Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
5 * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22#include <linux/kernel.h>
23#include <linux/clk.h>
24#include <linux/io.h>
25
26#include <asm/arch/hardware.h>
27#include <asm/proc-fns.h>
28#include <asm/system.h>
29
30/*
31 * Put the CPU into idle mode. It is called by default_idle()
32 * in process.c file.
33 */
34void arch_idle(void)
35{
36 /*
37 * This should do all the clock switching
38 * and wait for interrupt tricks.
39 */
40 cpu_do_idle();
41}
42
43#define WDOG_WCR_REG IO_ADDRESS(WDOG_BASE_ADDR)
44#define WDOG_WCR_SRS (1 << 4)
45
46/*
47 * Reset the system. It is called by machine_restart().
48 */
49void arch_reset(char mode)
50{
51 struct clk *clk;
52
53 clk = clk_get(NULL, "wdog_clk");
54 if (!clk) {
55 printk(KERN_ERR"Cannot activate the watchdog. Giving up\n");
56 return;
57 }
58
59 clk_enable(clk);
60
61 /* Assert SRS signal */
62 __raw_writew(__raw_readw(WDOG_WCR_REG) & ~WDOG_WCR_SRS, WDOG_WCR_REG);
63}