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 #include <linux/pinctrl/machine.h>
23
24 #include <asm/pgtable.h>
25 #include <asm/system_misc.h>
26 #include <asm/hardware/cache-l2x0.h>
27 #include <asm/mach/map.h>
28
29 #include "common.h"
30 #include "crmregs-imx3.h"
31 #include "devices/devices-common.h"
32 #include "hardware.h"
33 #include "iomux-v3.h"
34
35 void __iomem *mx3_ccm_base;
36
imx3_idle(void)37 static void imx3_idle(void)
38 {
39 unsigned long reg = 0;
40
41 mx3_cpu_lp_set(MX3_WAIT);
42
43 __asm__ __volatile__(
44 /* disable I and D cache */
45 "mrc p15, 0, %0, c1, c0, 0\n"
46 "bic %0, %0, #0x00001000\n"
47 "bic %0, %0, #0x00000004\n"
48 "mcr p15, 0, %0, c1, c0, 0\n"
49 /* invalidate I cache */
50 "mov %0, #0\n"
51 "mcr p15, 0, %0, c7, c5, 0\n"
52 /* clear and invalidate D cache */
53 "mov %0, #0\n"
54 "mcr p15, 0, %0, c7, c14, 0\n"
55 /* WFI */
56 "mov %0, #0\n"
57 "mcr p15, 0, %0, c7, c0, 4\n"
58 "nop\n" "nop\n" "nop\n" "nop\n"
59 "nop\n" "nop\n" "nop\n"
60 /* enable I and D cache */
61 "mrc p15, 0, %0, c1, c0, 0\n"
62 "orr %0, %0, #0x00001000\n"
63 "orr %0, %0, #0x00000004\n"
64 "mcr p15, 0, %0, c1, c0, 0\n"
65 : "=r" (reg));
66 }
67
imx3_ioremap_caller(phys_addr_t phys_addr,size_t size,unsigned int mtype,void * caller)68 static void __iomem *imx3_ioremap_caller(phys_addr_t phys_addr, size_t size,
69 unsigned int mtype, void *caller)
70 {
71 if (mtype == MT_DEVICE) {
72 /*
73 * Access all peripherals below 0x80000000 as nonshared device
74 * on mx3, but leave l2cc alone. Otherwise cache corruptions
75 * can occur.
76 */
77 if (phys_addr < 0x80000000 &&
78 !addr_in_module(phys_addr, MX3x_L2CC))
79 mtype = MT_DEVICE_NONSHARED;
80 }
81
82 return __arm_ioremap_caller(phys_addr, size, mtype, caller);
83 }
84
imx3_init_l2x0(void)85 static void __init imx3_init_l2x0(void)
86 {
87 #ifdef CONFIG_CACHE_L2X0
88 void __iomem *l2x0_base;
89 void __iomem *clkctl_base;
90
91 /*
92 * First of all, we must repair broken chip settings. There are some
93 * i.MX35 CPUs in the wild, comming with bogus L2 cache settings. These
94 * misconfigured CPUs will run amok immediately when the L2 cache gets enabled.
95 * Workaraound is to setup the correct register setting prior enabling the
96 * L2 cache. This should not hurt already working CPUs, as they are using the
97 * same value.
98 */
99 #define L2_MEM_VAL 0x10
100
101 clkctl_base = ioremap(MX35_CLKCTL_BASE_ADDR, 4096);
102 if (clkctl_base != NULL) {
103 writel(0x00000515, clkctl_base + L2_MEM_VAL);
104 iounmap(clkctl_base);
105 } else {
106 pr_err("L2 cache: Cannot fix timing. Trying to continue without\n");
107 }
108
109 l2x0_base = ioremap(MX3x_L2CC_BASE_ADDR, 4096);
110 if (!l2x0_base) {
111 printk(KERN_ERR "remapping L2 cache area failed\n");
112 return;
113 }
114
115 l2x0_init(l2x0_base, 0x00030024, 0x00000000);
116 #endif
117 }
118
119 #ifdef CONFIG_SOC_IMX31
120 static struct map_desc mx31_io_desc[] __initdata = {
121 imx_map_entry(MX31, X_MEMC, MT_DEVICE),
122 imx_map_entry(MX31, AVIC, MT_DEVICE_NONSHARED),
123 imx_map_entry(MX31, AIPS1, MT_DEVICE_NONSHARED),
124 imx_map_entry(MX31, AIPS2, MT_DEVICE_NONSHARED),
125 imx_map_entry(MX31, SPBA0, MT_DEVICE_NONSHARED),
126 };
127
128 /*
129 * This function initializes the memory map. It is called during the
130 * system startup to create static physical to virtual memory mappings
131 * for the IO modules.
132 */
mx31_map_io(void)133 void __init mx31_map_io(void)
134 {
135 iotable_init(mx31_io_desc, ARRAY_SIZE(mx31_io_desc));
136 }
137
imx31_init_early(void)138 void __init imx31_init_early(void)
139 {
140 mxc_set_cpu_type(MXC_CPU_MX31);
141 arch_ioremap_caller = imx3_ioremap_caller;
142 arm_pm_idle = imx3_idle;
143 mx3_ccm_base = MX31_IO_ADDRESS(MX31_CCM_BASE_ADDR);
144 }
145
mx31_init_irq(void)146 void __init mx31_init_irq(void)
147 {
148 mxc_init_irq(MX31_IO_ADDRESS(MX31_AVIC_BASE_ADDR));
149 }
150
151 static struct sdma_script_start_addrs imx31_to1_sdma_script __initdata = {
152 .per_2_per_addr = 1677,
153 };
154
155 static struct sdma_script_start_addrs imx31_to2_sdma_script __initdata = {
156 .ap_2_ap_addr = 423,
157 .ap_2_bp_addr = 829,
158 .bp_2_ap_addr = 1029,
159 };
160
161 static struct sdma_platform_data imx31_sdma_pdata __initdata = {
162 .fw_name = "sdma-imx31-to2.bin",
163 .script_addrs = &imx31_to2_sdma_script,
164 };
165
166 static const struct resource imx31_audmux_res[] __initconst = {
167 DEFINE_RES_MEM(MX31_AUDMUX_BASE_ADDR, SZ_16K),
168 };
169
imx31_soc_init(void)170 void __init imx31_soc_init(void)
171 {
172 int to_version = mx31_revision() >> 4;
173
174 imx3_init_l2x0();
175
176 mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
177 mxc_device_init();
178
179 mxc_register_gpio("imx31-gpio", 0, MX31_GPIO1_BASE_ADDR, SZ_16K, MX31_INT_GPIO1, 0);
180 mxc_register_gpio("imx31-gpio", 1, MX31_GPIO2_BASE_ADDR, SZ_16K, MX31_INT_GPIO2, 0);
181 mxc_register_gpio("imx31-gpio", 2, MX31_GPIO3_BASE_ADDR, SZ_16K, MX31_INT_GPIO3, 0);
182
183 pinctrl_provide_dummies();
184
185 if (to_version == 1) {
186 strncpy(imx31_sdma_pdata.fw_name, "sdma-imx31-to1.bin",
187 strlen(imx31_sdma_pdata.fw_name));
188 imx31_sdma_pdata.script_addrs = &imx31_to1_sdma_script;
189 }
190
191 imx_add_imx_sdma("imx31-sdma", MX31_SDMA_BASE_ADDR, MX31_INT_SDMA, &imx31_sdma_pdata);
192
193 imx_set_aips(MX31_IO_ADDRESS(MX31_AIPS1_BASE_ADDR));
194 imx_set_aips(MX31_IO_ADDRESS(MX31_AIPS2_BASE_ADDR));
195
196 platform_device_register_simple("imx31-audmux", 0, imx31_audmux_res,
197 ARRAY_SIZE(imx31_audmux_res));
198 }
199 #endif /* ifdef CONFIG_SOC_IMX31 */
200
201 #ifdef CONFIG_SOC_IMX35
202 static struct map_desc mx35_io_desc[] __initdata = {
203 imx_map_entry(MX35, X_MEMC, MT_DEVICE),
204 imx_map_entry(MX35, AVIC, MT_DEVICE_NONSHARED),
205 imx_map_entry(MX35, AIPS1, MT_DEVICE_NONSHARED),
206 imx_map_entry(MX35, AIPS2, MT_DEVICE_NONSHARED),
207 imx_map_entry(MX35, SPBA0, MT_DEVICE_NONSHARED),
208 };
209
mx35_map_io(void)210 void __init mx35_map_io(void)
211 {
212 iotable_init(mx35_io_desc, ARRAY_SIZE(mx35_io_desc));
213 }
214
imx35_init_early(void)215 void __init imx35_init_early(void)
216 {
217 mxc_set_cpu_type(MXC_CPU_MX35);
218 mxc_iomux_v3_init(MX35_IO_ADDRESS(MX35_IOMUXC_BASE_ADDR));
219 arm_pm_idle = imx3_idle;
220 arch_ioremap_caller = imx3_ioremap_caller;
221 mx3_ccm_base = MX35_IO_ADDRESS(MX35_CCM_BASE_ADDR);
222 }
223
mx35_init_irq(void)224 void __init mx35_init_irq(void)
225 {
226 mxc_init_irq(MX35_IO_ADDRESS(MX35_AVIC_BASE_ADDR));
227 }
228
229 static struct sdma_script_start_addrs imx35_to1_sdma_script __initdata = {
230 .ap_2_ap_addr = 642,
231 .uart_2_mcu_addr = 817,
232 .mcu_2_app_addr = 747,
233 .uartsh_2_mcu_addr = 1183,
234 .per_2_shp_addr = 1033,
235 .mcu_2_shp_addr = 961,
236 .ata_2_mcu_addr = 1333,
237 .mcu_2_ata_addr = 1252,
238 .app_2_mcu_addr = 683,
239 .shp_2_per_addr = 1111,
240 .shp_2_mcu_addr = 892,
241 };
242
243 static struct sdma_script_start_addrs imx35_to2_sdma_script __initdata = {
244 .ap_2_ap_addr = 729,
245 .uart_2_mcu_addr = 904,
246 .per_2_app_addr = 1597,
247 .mcu_2_app_addr = 834,
248 .uartsh_2_mcu_addr = 1270,
249 .per_2_shp_addr = 1120,
250 .mcu_2_shp_addr = 1048,
251 .ata_2_mcu_addr = 1429,
252 .mcu_2_ata_addr = 1339,
253 .app_2_per_addr = 1531,
254 .app_2_mcu_addr = 770,
255 .shp_2_per_addr = 1198,
256 .shp_2_mcu_addr = 979,
257 };
258
259 static struct sdma_platform_data imx35_sdma_pdata __initdata = {
260 .fw_name = "sdma-imx35-to2.bin",
261 .script_addrs = &imx35_to2_sdma_script,
262 };
263
264 static const struct resource imx35_audmux_res[] __initconst = {
265 DEFINE_RES_MEM(MX35_AUDMUX_BASE_ADDR, SZ_16K),
266 };
267
imx35_soc_init(void)268 void __init imx35_soc_init(void)
269 {
270 int to_version = mx35_revision() >> 4;
271
272 imx3_init_l2x0();
273
274 mxc_arch_reset_init(MX35_IO_ADDRESS(MX35_WDOG_BASE_ADDR));
275 mxc_device_init();
276
277 mxc_register_gpio("imx35-gpio", 0, MX35_GPIO1_BASE_ADDR, SZ_16K, MX35_INT_GPIO1, 0);
278 mxc_register_gpio("imx35-gpio", 1, MX35_GPIO2_BASE_ADDR, SZ_16K, MX35_INT_GPIO2, 0);
279 mxc_register_gpio("imx35-gpio", 2, MX35_GPIO3_BASE_ADDR, SZ_16K, MX35_INT_GPIO3, 0);
280
281 pinctrl_provide_dummies();
282 if (to_version == 1) {
283 strncpy(imx35_sdma_pdata.fw_name, "sdma-imx35-to1.bin",
284 strlen(imx35_sdma_pdata.fw_name));
285 imx35_sdma_pdata.script_addrs = &imx35_to1_sdma_script;
286 }
287
288 imx_add_imx_sdma("imx35-sdma", MX35_SDMA_BASE_ADDR, MX35_INT_SDMA, &imx35_sdma_pdata);
289
290 /* Setup AIPS registers */
291 imx_set_aips(MX35_IO_ADDRESS(MX35_AIPS1_BASE_ADDR));
292 imx_set_aips(MX35_IO_ADDRESS(MX35_AIPS2_BASE_ADDR));
293
294 /* i.mx35 has the i.mx31 type audmux */
295 platform_device_register_simple("imx31-audmux", 0, imx35_audmux_res,
296 ARRAY_SIZE(imx35_audmux_res));
297 }
298 #endif /* ifdef CONFIG_SOC_IMX35 */
299