1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright 2012 Sascha Hauer, Pengutronix
4 */
5
6#include <linux/init.h>
7#include <linux/irq.h>
8#include <linux/of_address.h>
9#include <linux/of_irq.h>
10#include <linux/of_platform.h>
11#include <linux/mm.h>
12#include <asm/mach/arch.h>
13#include <asm/mach/map.h>
14#include <asm/mach/time.h>
15
16#include "common.h"
17#include "hardware.h"
18#include "mx27.h"
19
20/* MX27 memory map definition */
21static struct map_desc imx27_io_desc[] __initdata = {
22	/*
23	 * this fixed mapping covers:
24	 * - AIPI1
25	 * - AIPI2
26	 * - AITC
27	 * - ROM Patch
28	 * - and some reserved space
29	 */
30	imx_map_entry(MX27, AIPI, MT_DEVICE),
31	/*
32	 * this fixed mapping covers:
33	 * - CSI
34	 * - ATA
35	 */
36	imx_map_entry(MX27, SAHB1, MT_DEVICE),
37	/*
38	 * this fixed mapping covers:
39	 * - EMI
40	 */
41	imx_map_entry(MX27, X_MEMC, MT_DEVICE),
42};
43
44/*
45 * Initialize the memory map. It is called during the
46 * system startup to create static physical to virtual
47 * memory map for the IO modules.
48 */
49static void __init mx27_map_io(void)
50{
51	iotable_init(imx27_io_desc, ARRAY_SIZE(imx27_io_desc));
52}
53
54static void __init imx27_init_early(void)
55{
56	mxc_set_cpu_type(MXC_CPU_MX27);
57}
58
59static void __init mx27_init_irq(void)
60{
61	void __iomem *avic_base;
62	struct device_node *np;
63
64	np = of_find_compatible_node(NULL, NULL, "fsl,avic");
65	avic_base = of_iomap(np, 0);
66	BUG_ON(!avic_base);
67	mxc_init_irq(avic_base);
68}
69
70static const char * const imx27_dt_board_compat[] __initconst = {
71	"fsl,imx27",
72	NULL
73};
74
75DT_MACHINE_START(IMX27_DT, "Freescale i.MX27 (Device Tree Support)")
76	.map_io		= mx27_map_io,
77	.init_early	= imx27_init_early,
78	.init_irq	= mx27_init_irq,
79	.init_late	= imx27_pm_init,
80	.dt_compat	= imx27_dt_board_compat,
81MACHINE_END
82