summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-imx/mm-imx3.c
blob: 31807d2a8b7bf1a65d57c8f4cb748bb9e6697934 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
/*
 *  Copyright (C) 1999,2000 Arm Limited
 *  Copyright (C) 2000 Deep Blue Solutions Ltd
 *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
 *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
 *    - add MX31 specific definitions
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <linux/mm.h>
#include <linux/init.h>
#include <linux/err.h>

#include <asm/pgtable.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/mach/map.h>

#include <mach/common.h>
#include <mach/devices-common.h>
#include <mach/hardware.h>
#include <mach/iomux-v3.h>
#include <mach/irqs.h>

static void imx3_idle(void)
{
	unsigned long reg = 0;

	if (!need_resched())
		__asm__ __volatile__(
			/* disable I and D cache */
			"mrc p15, 0, %0, c1, c0, 0\n"
			"bic %0, %0, #0x00001000\n"
			"bic %0, %0, #0x00000004\n"
			"mcr p15, 0, %0, c1, c0, 0\n"
			/* invalidate I cache */
			"mov %0, #0\n"
			"mcr p15, 0, %0, c7, c5, 0\n"
			/* clear and invalidate D cache */
			"mov %0, #0\n"
			"mcr p15, 0, %0, c7, c14, 0\n"
			/* WFI */
			"mov %0, #0\n"
			"mcr p15, 0, %0, c7, c0, 4\n"
			"nop\n" "nop\n" "nop\n" "nop\n"
			"nop\n" "nop\n" "nop\n"
			/* enable I and D cache */
			"mrc p15, 0, %0, c1, c0, 0\n"
			"orr %0, %0, #0x00001000\n"
			"orr %0, %0, #0x00000004\n"
			"mcr p15, 0, %0, c1, c0, 0\n"
			: "=r" (reg));
	local_irq_enable();
}

static void __iomem *imx3_ioremap(unsigned long phys_addr, size_t size,
				  unsigned int mtype)
{
	if (mtype == MT_DEVICE) {
		/*
		 * Access all peripherals below 0x80000000 as nonshared device
		 * on mx3, but leave l2cc alone.  Otherwise cache corruptions
		 * can occur.
		 */
		if (phys_addr < 0x80000000 &&
				!addr_in_module(phys_addr, MX3x_L2CC))
			mtype = MT_DEVICE_NONSHARED;
	}

	return __arm_ioremap(phys_addr, size, mtype);
}

void imx3_init_l2x0(void)
{
	void __iomem *l2x0_base;
	void __iomem *clkctl_base;

/*
 * First of all, we must repair broken chip settings. There are some
 * i.MX35 CPUs in the wild, comming with bogus L2 cache settings. These
 * misconfigured CPUs will run amok immediately when the L2 cache gets enabled.
 * Workaraound is to setup the correct register setting prior enabling the
 * L2 cache. This should not hurt already working CPUs, as they are using the
 * same value.
 */
#define L2_MEM_VAL 0x10

	clkctl_base = ioremap(MX35_CLKCTL_BASE_ADDR, 4096);
	if (clkctl_base != NULL) {
		writel(0x00000515, clkctl_base + L2_MEM_VAL);
		iounmap(clkctl_base);
	} else {
		pr_err("L2 cache: Cannot fix timing. Trying to continue without\n");
	}

	l2x0_base = ioremap(MX3x_L2CC_BASE_ADDR, 4096);
	if (IS_ERR(l2x0_base)) {
		printk(KERN_ERR "remapping L2 cache area failed with %ld\n",
				PTR_ERR(l2x0_base));
		return;
	}

	l2x0_init(l2x0_base, 0x00030024, 0x00000000);
}

#ifdef CONFIG_SOC_IMX31
static struct map_desc mx31_io_desc[] __initdata = {
	imx_map_entry(MX31, X_MEMC, MT_DEVICE),
	imx_map_entry(MX31, AVIC, MT_DEVICE_NONSHARED),
	imx_map_entry(MX31, AIPS1, MT_DEVICE_NONSHARED),
	imx_map_entry(MX31, AIPS2, MT_DEVICE_NONSHARED),
	imx_map_entry(MX31, SPBA0, MT_DEVICE_NONSHARED),
};

/*
 * This function initializes the memory map. It is called during the
 * system startup to create static physical to virtual memory mappings
 * for the IO modules.
 */
void __init mx31_map_io(void)
{
	iotable_init(mx31_io_desc, ARRAY_SIZE(mx31_io_desc));
}

void __init imx31_init_early(void)
{
	mxc_set_cpu_type(MXC_CPU_MX31);
	mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
	pm_idle = imx3_idle;
	imx_ioremap = imx3_ioremap;
}

void __init mx31_init_irq(void)
{
	mxc_init_irq(MX31_IO_ADDRESS(MX31_AVIC_BASE_ADDR));
}

static struct sdma_script_start_addrs imx31_to1_sdma_script __initdata = {
	.per_2_per_addr = 1677,
};

static struct sdma_script_start_addrs imx31_to2_sdma_script __initdata = {
	.ap_2_ap_addr = 423,
	.ap_2_bp_addr = 829,
	.bp_2_ap_addr = 1029,
};

static struct sdma_platform_data imx31_sdma_pdata __initdata = {
	.fw_name = "sdma-imx31-to2.bin",
	.script_addrs = &imx31_to2_sdma_script,
};

void __init imx31_soc_init(void)
{
	int to_version = mx31_revision() >> 4;

	imx3_init_l2x0();

	mxc_register_gpio("imx31-gpio", 0, MX31_GPIO1_BASE_ADDR, SZ_16K, MX31_INT_GPIO1, 0);
	mxc_register_gpio("imx31-gpio", 1, MX31_GPIO2_BASE_ADDR, SZ_16K, MX31_INT_GPIO2, 0);
	mxc_register_gpio("imx31-gpio", 2, MX31_GPIO3_BASE_ADDR, SZ_16K, MX31_INT_GPIO3, 0);

	if (to_version == 1) {
		strncpy(imx31_sdma_pdata.fw_name, "sdma-imx31-to1.bin",
			strlen(imx31_sdma_pdata.fw_name));
		imx31_sdma_pdata.script_addrs = &imx31_to1_sdma_script;
	}

	imx_add_imx_sdma("imx31-sdma", MX31_SDMA_BASE_ADDR, MX31_INT_SDMA, &imx31_sdma_pdata);
}
#endif /* ifdef CONFIG_SOC_IMX31 */

#ifdef CONFIG_SOC_IMX35
static struct map_desc mx35_io_desc[] __initdata = {
	imx_map_entry(MX35, X_MEMC, MT_DEVICE),
	imx_map_entry(MX35, AVIC, MT_DEVICE_NONSHARED),
	imx_map_entry(MX35, AIPS1, MT_DEVICE_NONSHARED),
	imx_map_entry(MX35, AIPS2, MT_DEVICE_NONSHARED),
	imx_map_entry(MX35, SPBA0, MT_DEVICE_NONSHARED),
};

void __init mx35_map_io(void)
{
	iotable_init(mx35_io_desc, ARRAY_SIZE(mx35_io_desc));
}

void __init imx35_init_early(void)
{
	mxc_set_cpu_type(MXC_CPU_MX35);
	mxc_iomux_v3_init(MX35_IO_ADDRESS(MX35_IOMUXC_BASE_ADDR));
	mxc_arch_reset_init(MX35_IO_ADDRESS(MX35_WDOG_BASE_ADDR));
	pm_idle = imx3_idle;
	imx_ioremap = imx3_ioremap;
}

void __init mx35_init_irq(void)
{
	mxc_init_irq(MX35_IO_ADDRESS(MX35_AVIC_BASE_ADDR));
}

static struct sdma_script_start_addrs imx35_to1_sdma_script __initdata = {
	.ap_2_ap_addr = 642,
	.uart_2_mcu_addr = 817,
	.mcu_2_app_addr = 747,
	.uartsh_2_mcu_addr = 1183,
	.per_2_shp_addr = 1033,
	.mcu_2_shp_addr = 961,
	.ata_2_mcu_addr = 1333,
	.mcu_2_ata_addr = 1252,
	.app_2_mcu_addr = 683,
	.shp_2_per_addr = 1111,
	.shp_2_mcu_addr = 892,
};

static struct sdma_script_start_addrs imx35_to2_sdma_script __initdata = {
	.ap_2_ap_addr = 729,
	.uart_2_mcu_addr = 904,
	.per_2_app_addr = 1597,
	.mcu_2_app_addr = 834,
	.uartsh_2_mcu_addr = 1270,
	.per_2_shp_addr = 1120,
	.mcu_2_shp_addr = 1048,
	.ata_2_mcu_addr = 1429,
	.mcu_2_ata_addr = 1339,
	.app_2_per_addr = 1531,
	.app_2_mcu_addr = 770,
	.shp_2_per_addr = 1198,
	.shp_2_mcu_addr = 979,
};

static struct sdma_platform_data imx35_sdma_pdata __initdata = {
	.fw_name = "sdma-imx35-to2.bin",
	.script_addrs = &imx35_to2_sdma_script,
};

void __init imx35_soc_init(void)
{
	int to_version = mx35_revision() >> 4;

	imx3_init_l2x0();

	/* i.mx35 has the i.mx31 type gpio */
	mxc_register_gpio("imx31-gpio", 0, MX35_GPIO1_BASE_ADDR, SZ_16K, MX35_INT_GPIO1, 0);
	mxc_register_gpio("imx31-gpio", 1, MX35_GPIO2_BASE_ADDR, SZ_16K, MX35_INT_GPIO2, 0);
	mxc_register_gpio("imx31-gpio", 2, MX35_GPIO3_BASE_ADDR, SZ_16K, MX35_INT_GPIO3, 0);

	if (to_version == 1) {
		strncpy(imx35_sdma_pdata.fw_name, "sdma-imx35-to1.bin",
			strlen(imx35_sdma_pdata.fw_name));
		imx35_sdma_pdata.script_addrs = &imx35_to1_sdma_script;
	}

	imx_add_imx_sdma("imx35-sdma", MX35_SDMA_BASE_ADDR, MX35_INT_SDMA, &imx35_sdma_pdata);
}
#endif /* ifdef CONFIG_SOC_IMX35 */