ARM: imx: only call l2x0_init if it's available
[deliverable/linux.git] / arch / arm / mach-imx / mm-imx3.c
CommitLineData
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1/*
2 * Copyright (C) 1999,2000 Arm Limited
3 * Copyright (C) 2000 Deep Blue Solutions Ltd
4 * Copyright (C) 2002 Shane Nay (shane@minirl.com)
5 * Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
6 * - add MX31 specific definitions
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 */
18
19#include <linux/mm.h>
20#include <linux/init.h>
21#include <linux/err.h>
22
23#include <asm/pgtable.h>
86dfe446 24#include <asm/system_misc.h>
ddd5f51b 25#include <asm/hardware/cache-l2x0.h>
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26#include <asm/mach/map.h>
27
28#include <mach/common.h>
36223604 29#include <mach/devices-common.h>
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30#include <mach/hardware.h>
31#include <mach/iomux-v3.h>
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32#include <mach/irqs.h>
33
41e7daf2
SG
34static void imx3_idle(void)
35{
36 unsigned long reg = 0;
8c6d8319 37
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38 mx3_cpu_lp_set(MX3_WAIT);
39
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NP
40 __asm__ __volatile__(
41 /* disable I and D cache */
42 "mrc p15, 0, %0, c1, c0, 0\n"
43 "bic %0, %0, #0x00001000\n"
44 "bic %0, %0, #0x00000004\n"
45 "mcr p15, 0, %0, c1, c0, 0\n"
46 /* invalidate I cache */
47 "mov %0, #0\n"
48 "mcr p15, 0, %0, c7, c5, 0\n"
49 /* clear and invalidate D cache */
50 "mov %0, #0\n"
51 "mcr p15, 0, %0, c7, c14, 0\n"
52 /* WFI */
53 "mov %0, #0\n"
54 "mcr p15, 0, %0, c7, c0, 4\n"
55 "nop\n" "nop\n" "nop\n" "nop\n"
56 "nop\n" "nop\n" "nop\n"
57 /* enable I and D cache */
58 "mrc p15, 0, %0, c1, c0, 0\n"
59 "orr %0, %0, #0x00001000\n"
60 "orr %0, %0, #0x00000004\n"
61 "mcr p15, 0, %0, c1, c0, 0\n"
62 : "=r" (reg));
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SG
63}
64
c177aa98
RH
65static void __iomem *imx3_ioremap_caller(unsigned long phys_addr, size_t size,
66 unsigned int mtype, void *caller)
f548897f
SG
67{
68 if (mtype == MT_DEVICE) {
69 /*
70 * Access all peripherals below 0x80000000 as nonshared device
71 * on mx3, but leave l2cc alone. Otherwise cache corruptions
72 * can occur.
73 */
74 if (phys_addr < 0x80000000 &&
75 !addr_in_module(phys_addr, MX3x_L2CC))
76 mtype = MT_DEVICE_NONSHARED;
77 }
78
c177aa98 79 return __arm_ioremap_caller(phys_addr, size, mtype, caller);
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SG
80}
81
9418ba30 82void __init imx3_init_l2x0(void)
ddd5f51b 83{
f90da3c7 84#ifdef CONFIG_CACHE_L2X0
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85 void __iomem *l2x0_base;
86 void __iomem *clkctl_base;
87
88/*
89 * First of all, we must repair broken chip settings. There are some
90 * i.MX35 CPUs in the wild, comming with bogus L2 cache settings. These
91 * misconfigured CPUs will run amok immediately when the L2 cache gets enabled.
92 * Workaraound is to setup the correct register setting prior enabling the
93 * L2 cache. This should not hurt already working CPUs, as they are using the
94 * same value.
95 */
96#define L2_MEM_VAL 0x10
97
98 clkctl_base = ioremap(MX35_CLKCTL_BASE_ADDR, 4096);
99 if (clkctl_base != NULL) {
100 writel(0x00000515, clkctl_base + L2_MEM_VAL);
101 iounmap(clkctl_base);
102 } else {
103 pr_err("L2 cache: Cannot fix timing. Trying to continue without\n");
104 }
105
106 l2x0_base = ioremap(MX3x_L2CC_BASE_ADDR, 4096);
107 if (IS_ERR(l2x0_base)) {
108 printk(KERN_ERR "remapping L2 cache area failed with %ld\n",
109 PTR_ERR(l2x0_base));
110 return;
111 }
112
113 l2x0_init(l2x0_base, 0x00030024, 0x00000000);
f90da3c7 114#endif
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SG
115}
116
87514fce 117#ifdef CONFIG_SOC_IMX31
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118static struct map_desc mx31_io_desc[] __initdata = {
119 imx_map_entry(MX31, X_MEMC, MT_DEVICE),
120 imx_map_entry(MX31, AVIC, MT_DEVICE_NONSHARED),
121 imx_map_entry(MX31, AIPS1, MT_DEVICE_NONSHARED),
122 imx_map_entry(MX31, AIPS2, MT_DEVICE_NONSHARED),
123 imx_map_entry(MX31, SPBA0, MT_DEVICE_NONSHARED),
124};
125
126/*
127 * This function initializes the memory map. It is called during the
128 * system startup to create static physical to virtual memory mappings
129 * for the IO modules.
130 */
131void __init mx31_map_io(void)
132{
133 iotable_init(mx31_io_desc, ARRAY_SIZE(mx31_io_desc));
134}
135
136void __init imx31_init_early(void)
137{
138 mxc_set_cpu_type(MXC_CPU_MX31);
139 mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
c177aa98 140 arch_ioremap_caller = imx3_ioremap_caller;
4a3ea244 141 arm_pm_idle = imx3_idle;
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142}
143
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144void __init mx31_init_irq(void)
145{
146 mxc_init_irq(MX31_IO_ADDRESS(MX31_AVIC_BASE_ADDR));
b78d8e59
SG
147}
148
36223604
SG
149static struct sdma_script_start_addrs imx31_to1_sdma_script __initdata = {
150 .per_2_per_addr = 1677,
151};
152
153static struct sdma_script_start_addrs imx31_to2_sdma_script __initdata = {
154 .ap_2_ap_addr = 423,
155 .ap_2_bp_addr = 829,
156 .bp_2_ap_addr = 1029,
157};
158
159static struct sdma_platform_data imx31_sdma_pdata __initdata = {
2e534b21 160 .fw_name = "sdma-imx31-to2.bin",
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SG
161 .script_addrs = &imx31_to2_sdma_script,
162};
163
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164static const struct resource imx31_audmux_res[] __initconst = {
165 DEFINE_RES_MEM(MX31_AUDMUX_BASE_ADDR, SZ_16K),
166};
167
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SG
168void __init imx31_soc_init(void)
169{
36223604
SG
170 int to_version = mx31_revision() >> 4;
171
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172 imx3_init_l2x0();
173
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SG
174 mxc_register_gpio("imx31-gpio", 0, MX31_GPIO1_BASE_ADDR, SZ_16K, MX31_INT_GPIO1, 0);
175 mxc_register_gpio("imx31-gpio", 1, MX31_GPIO2_BASE_ADDR, SZ_16K, MX31_INT_GPIO2, 0);
176 mxc_register_gpio("imx31-gpio", 2, MX31_GPIO3_BASE_ADDR, SZ_16K, MX31_INT_GPIO3, 0);
36223604 177
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SG
178 if (to_version == 1) {
179 strncpy(imx31_sdma_pdata.fw_name, "sdma-imx31-to1.bin",
180 strlen(imx31_sdma_pdata.fw_name));
36223604 181 imx31_sdma_pdata.script_addrs = &imx31_to1_sdma_script;
2e534b21
SG
182 }
183
62550cd7 184 imx_add_imx_sdma("imx31-sdma", MX31_SDMA_BASE_ADDR, MX31_INT_SDMA, &imx31_sdma_pdata);
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185
186 imx_set_aips(MX31_IO_ADDRESS(MX31_AIPS1_BASE_ADDR));
187 imx_set_aips(MX31_IO_ADDRESS(MX31_AIPS2_BASE_ADDR));
281b0539 188
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189 platform_device_register_simple("imx31-audmux", 0, imx31_audmux_res,
190 ARRAY_SIZE(imx31_audmux_res));
27ad4bf7 191}
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192#endif /* ifdef CONFIG_SOC_IMX31 */
193
194#ifdef CONFIG_SOC_IMX35
195static struct map_desc mx35_io_desc[] __initdata = {
196 imx_map_entry(MX35, X_MEMC, MT_DEVICE),
197 imx_map_entry(MX35, AVIC, MT_DEVICE_NONSHARED),
198 imx_map_entry(MX35, AIPS1, MT_DEVICE_NONSHARED),
199 imx_map_entry(MX35, AIPS2, MT_DEVICE_NONSHARED),
200 imx_map_entry(MX35, SPBA0, MT_DEVICE_NONSHARED),
201};
202
203void __init mx35_map_io(void)
204{
205 iotable_init(mx35_io_desc, ARRAY_SIZE(mx35_io_desc));
206}
207
208void __init imx35_init_early(void)
209{
210 mxc_set_cpu_type(MXC_CPU_MX35);
211 mxc_iomux_v3_init(MX35_IO_ADDRESS(MX35_IOMUXC_BASE_ADDR));
212 mxc_arch_reset_init(MX35_IO_ADDRESS(MX35_WDOG_BASE_ADDR));
4a3ea244 213 arm_pm_idle = imx3_idle;
c177aa98 214 arch_ioremap_caller = imx3_ioremap_caller;
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215}
216
217void __init mx35_init_irq(void)
218{
219 mxc_init_irq(MX35_IO_ADDRESS(MX35_AVIC_BASE_ADDR));
220}
f1263de2
SG
221
222static struct sdma_script_start_addrs imx35_to1_sdma_script __initdata = {
223 .ap_2_ap_addr = 642,
224 .uart_2_mcu_addr = 817,
225 .mcu_2_app_addr = 747,
226 .uartsh_2_mcu_addr = 1183,
227 .per_2_shp_addr = 1033,
228 .mcu_2_shp_addr = 961,
229 .ata_2_mcu_addr = 1333,
230 .mcu_2_ata_addr = 1252,
231 .app_2_mcu_addr = 683,
232 .shp_2_per_addr = 1111,
233 .shp_2_mcu_addr = 892,
234};
235
236static struct sdma_script_start_addrs imx35_to2_sdma_script __initdata = {
237 .ap_2_ap_addr = 729,
238 .uart_2_mcu_addr = 904,
239 .per_2_app_addr = 1597,
240 .mcu_2_app_addr = 834,
241 .uartsh_2_mcu_addr = 1270,
242 .per_2_shp_addr = 1120,
243 .mcu_2_shp_addr = 1048,
244 .ata_2_mcu_addr = 1429,
245 .mcu_2_ata_addr = 1339,
246 .app_2_per_addr = 1531,
247 .app_2_mcu_addr = 770,
248 .shp_2_per_addr = 1198,
249 .shp_2_mcu_addr = 979,
250};
251
252static struct sdma_platform_data imx35_sdma_pdata __initdata = {
253 .fw_name = "sdma-imx35-to2.bin",
254 .script_addrs = &imx35_to2_sdma_script,
255};
256
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RZ
257static const struct resource imx35_audmux_res[] __initconst = {
258 DEFINE_RES_MEM(MX35_AUDMUX_BASE_ADDR, SZ_16K),
259};
260
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261void __init imx35_soc_init(void)
262{
263 int to_version = mx35_revision() >> 4;
264
ddd5f51b
SG
265 imx3_init_l2x0();
266
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SG
267 /* i.mx35 has the i.mx31 type gpio */
268 mxc_register_gpio("imx31-gpio", 0, MX35_GPIO1_BASE_ADDR, SZ_16K, MX35_INT_GPIO1, 0);
269 mxc_register_gpio("imx31-gpio", 1, MX35_GPIO2_BASE_ADDR, SZ_16K, MX35_INT_GPIO2, 0);
270 mxc_register_gpio("imx31-gpio", 2, MX35_GPIO3_BASE_ADDR, SZ_16K, MX35_INT_GPIO3, 0);
271
272 if (to_version == 1) {
273 strncpy(imx35_sdma_pdata.fw_name, "sdma-imx35-to1.bin",
274 strlen(imx35_sdma_pdata.fw_name));
275 imx35_sdma_pdata.script_addrs = &imx35_to1_sdma_script;
276 }
277
278 imx_add_imx_sdma("imx35-sdma", MX35_SDMA_BASE_ADDR, MX35_INT_SDMA, &imx35_sdma_pdata);
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279
280 /* Setup AIPS registers */
281 imx_set_aips(MX35_IO_ADDRESS(MX35_AIPS1_BASE_ADDR));
282 imx_set_aips(MX35_IO_ADDRESS(MX35_AIPS2_BASE_ADDR));
281b0539 283
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RZ
284 /* i.mx35 has the i.mx31 type audmux */
285 platform_device_register_simple("imx31-audmux", 0, imx35_audmux_res,
286 ARRAY_SIZE(imx35_audmux_res));
f1263de2 287}
87514fce 288#endif /* ifdef CONFIG_SOC_IMX35 */
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