arch/arm/mach-imx/mm-imx3.c

   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 <mach/common.h>
  30 #include <mach/devices-common.h>
  31 #include <mach/hardware.h>
  32 #include <mach/iomux-v3.h>
  33 #include <mach/irqs.h>
  34
  35 #include "crmregs-imx3.h"
  36
  37 void __iomem *mx3_ccm_base;
  38
  39 static void imx3_idle(void)
  40 {
  41         unsigned long reg = 0;
  42
  43         mx3_cpu_lp_set(MX3_WAIT);
  44
  45         __asm__ __volatile__(
  46                 /* disable I and D cache */
  47                 "mrc p15, 0, %0, c1, c0, 0\n"
  48                 "bic %0, %0, #0x00001000\n"
  49                 "bic %0, %0, #0x00000004\n"
  50                 "mcr p15, 0, %0, c1, c0, 0\n"
  51                 /* invalidate I cache */
  52                 "mov %0, #0\n"
  53                 "mcr p15, 0, %0, c7, c5, 0\n"
  54                 /* clear and invalidate D cache */
  55                 "mov %0, #0\n"
  56                 "mcr p15, 0, %0, c7, c14, 0\n"
  57                 /* WFI */
  58                 "mov %0, #0\n"
  59                 "mcr p15, 0, %0, c7, c0, 4\n"
  60                 "nop\n" "nop\n" "nop\n" "nop\n"
  61                 "nop\n" "nop\n" "nop\n"
  62                 /* enable I and D cache */
  63                 "mrc p15, 0, %0, c1, c0, 0\n"
  64                 "orr %0, %0, #0x00001000\n"
  65                 "orr %0, %0, #0x00000004\n"
  66                 "mcr p15, 0, %0, c1, c0, 0\n"
  67                 : "=r" (reg));
  68 }
  69
  70 static void __iomem *imx3_ioremap_caller(unsigned long phys_addr, size_t size,
  71                                          unsigned int mtype, void *caller)
  72 {
  73         if (mtype == MT_DEVICE) {
  74                 /*
  75                  * Access all peripherals below 0x80000000 as nonshared device
  76                  * on mx3, but leave l2cc alone.  Otherwise cache corruptions
  77                  * can occur.
  78                  */
  79                 if (phys_addr < 0x80000000 &&
  80                                 !addr_in_module(phys_addr, MX3x_L2CC))
  81                         mtype = MT_DEVICE_NONSHARED;
  82         }
  83
  84         return __arm_ioremap_caller(phys_addr, size, mtype, caller);
  85 }
  86
  87 void __init imx3_init_l2x0(void)
  88 {
  89         void __iomem *l2x0_base;
  90         void __iomem *clkctl_base;
  91
  92 /*
  93  * First of all, we must repair broken chip settings. There are some
  94  * i.MX35 CPUs in the wild, comming with bogus L2 cache settings. These
  95  * misconfigured CPUs will run amok immediately when the L2 cache gets enabled.
  96  * Workaraound is to setup the correct register setting prior enabling the
  97  * L2 cache. This should not hurt already working CPUs, as they are using the
  98  * same value.
  99  */
 100 #define L2_MEM_VAL 0x10
 101
 102         clkctl_base = ioremap(MX35_CLKCTL_BASE_ADDR, 4096);
 103         if (clkctl_base != NULL) {
 104                 writel(0x00000515, clkctl_base + L2_MEM_VAL);
 105                 iounmap(clkctl_base);
 106         } else {
 107                 pr_err("L2 cache: Cannot fix timing. Trying to continue without\n");
 108         }
 109
 110         l2x0_base = ioremap(MX3x_L2CC_BASE_ADDR, 4096);
 111         if (IS_ERR(l2x0_base)) {
 112                 printk(KERN_ERR "remapping L2 cache area failed with %ld\n",
 113                                 PTR_ERR(l2x0_base));
 114                 return;
 115         }
 116
 117         l2x0_init(l2x0_base, 0x00030024, 0x00000000);
 118 }
 119
 120 #ifdef CONFIG_SOC_IMX31
 121 static struct map_desc mx31_io_desc[] __initdata = {
 122         imx_map_entry(MX31, X_MEMC, MT_DEVICE),
 123         imx_map_entry(MX31, AVIC, MT_DEVICE_NONSHARED),
 124         imx_map_entry(MX31, AIPS1, MT_DEVICE_NONSHARED),
 125         imx_map_entry(MX31, AIPS2, MT_DEVICE_NONSHARED),
 126         imx_map_entry(MX31, SPBA0, MT_DEVICE_NONSHARED),
 127 };
 128
 129 /*
 130  * This function initializes the memory map. It is called during the
 131  * system startup to create static physical to virtual memory mappings
 132  * for the IO modules.
 133  */
 134 void __init mx31_map_io(void)
 135 {
 136         iotable_init(mx31_io_desc, ARRAY_SIZE(mx31_io_desc));
 137 }
 138
 139 void __init imx31_init_early(void)
 140 {
 141         mxc_set_cpu_type(MXC_CPU_MX31);
 142         mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
 143         arch_ioremap_caller = imx3_ioremap_caller;
 144         arm_pm_idle = imx3_idle;
 145         mx3_ccm_base = MX31_IO_ADDRESS(MX31_CCM_BASE_ADDR);
 146 }
 147
 148 void __init mx31_init_irq(void)
 149 {
 150         mxc_init_irq(MX31_IO_ADDRESS(MX31_AVIC_BASE_ADDR));
 151 }
 152
 153 static struct sdma_script_start_addrs imx31_to1_sdma_script __initdata = {
 154         .per_2_per_addr = 1677,
 155 };
 156
 157 static struct sdma_script_start_addrs imx31_to2_sdma_script __initdata = {
 158         .ap_2_ap_addr = 423,
 159         .ap_2_bp_addr = 829,
 160         .bp_2_ap_addr = 1029,
 161 };
 162
 163 static struct sdma_platform_data imx31_sdma_pdata __initdata = {
 164         .fw_name = "sdma-imx31-to2.bin",
 165         .script_addrs = &imx31_to2_sdma_script,
 166 };
 167
 168 static const struct resource imx31_audmux_res[] __initconst = {
 169         DEFINE_RES_MEM(MX31_AUDMUX_BASE_ADDR, SZ_16K),
 170 };
 171
 172 void __init imx31_soc_init(void)
 173 {
 174         int to_version = mx31_revision() >> 4;
 175
 176         imx3_init_l2x0();
 177
 178         mxc_register_gpio("imx31-gpio", 0, MX31_GPIO1_BASE_ADDR, SZ_16K, MX31_INT_GPIO1, 0);
 179         mxc_register_gpio("imx31-gpio", 1, MX31_GPIO2_BASE_ADDR, SZ_16K, MX31_INT_GPIO2, 0);
 180         mxc_register_gpio("imx31-gpio", 2, MX31_GPIO3_BASE_ADDR, SZ_16K, MX31_INT_GPIO3, 0);
 181
 182         pinctrl_provide_dummies();
 183
 184         if (to_version == 1) {
 185                 strncpy(imx31_sdma_pdata.fw_name, "sdma-imx31-to1.bin",
 186                         strlen(imx31_sdma_pdata.fw_name));
 187                 imx31_sdma_pdata.script_addrs = &imx31_to1_sdma_script;
 188         }
 189
 190         imx_add_imx_sdma("imx31-sdma", MX31_SDMA_BASE_ADDR, MX31_INT_SDMA, &imx31_sdma_pdata);
 191
 192         imx_set_aips(MX31_IO_ADDRESS(MX31_AIPS1_BASE_ADDR));
 193         imx_set_aips(MX31_IO_ADDRESS(MX31_AIPS2_BASE_ADDR));
 194
 195         platform_device_register_simple("imx31-audmux", 0, imx31_audmux_res,
 196                                         ARRAY_SIZE(imx31_audmux_res));
 197 }
 198 #endif /* ifdef CONFIG_SOC_IMX31 */
 199
 200 #ifdef CONFIG_SOC_IMX35
 201 static struct map_desc mx35_io_desc[] __initdata = {
 202         imx_map_entry(MX35, X_MEMC, MT_DEVICE),
 203         imx_map_entry(MX35, AVIC, MT_DEVICE_NONSHARED),
 204         imx_map_entry(MX35, AIPS1, MT_DEVICE_NONSHARED),
 205         imx_map_entry(MX35, AIPS2, MT_DEVICE_NONSHARED),
 206         imx_map_entry(MX35, SPBA0, MT_DEVICE_NONSHARED),
 207 };
 208
 209 void __init mx35_map_io(void)
 210 {
 211         iotable_init(mx35_io_desc, ARRAY_SIZE(mx35_io_desc));
 212 }
 213
 214 void __init imx35_init_early(void)
 215 {
 216         mxc_set_cpu_type(MXC_CPU_MX35);
 217         mxc_iomux_v3_init(MX35_IO_ADDRESS(MX35_IOMUXC_BASE_ADDR));
 218         mxc_arch_reset_init(MX35_IO_ADDRESS(MX35_WDOG_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
 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
 268 void __init imx35_soc_init(void)
 269 {
 270         int to_version = mx35_revision() >> 4;
 271
 272         imx3_init_l2x0();
 273
 274         /* i.mx35 has the i.mx31 type gpio */
 275         mxc_register_gpio("imx31-gpio", 0, MX35_GPIO1_BASE_ADDR, SZ_16K, MX35_INT_GPIO1, 0);
 276         mxc_register_gpio("imx31-gpio", 1, MX35_GPIO2_BASE_ADDR, SZ_16K, MX35_INT_GPIO2, 0);
 277         mxc_register_gpio("imx31-gpio", 2, MX35_GPIO3_BASE_ADDR, SZ_16K, MX35_INT_GPIO3, 0);
 278
 279         pinctrl_provide_dummies();
 280         if (to_version == 1) {
 281                 strncpy(imx35_sdma_pdata.fw_name, "sdma-imx35-to1.bin",
 282                         strlen(imx35_sdma_pdata.fw_name));
 283                 imx35_sdma_pdata.script_addrs = &imx35_to1_sdma_script;
 284         }
 285
 286         imx_add_imx_sdma("imx35-sdma", MX35_SDMA_BASE_ADDR, MX35_INT_SDMA, &imx35_sdma_pdata);
 287
 288         /* Setup AIPS registers */
 289         imx_set_aips(MX35_IO_ADDRESS(MX35_AIPS1_BASE_ADDR));
 290         imx_set_aips(MX35_IO_ADDRESS(MX35_AIPS2_BASE_ADDR));
 291
 292         /* i.mx35 has the i.mx31 type audmux */
 293         platform_device_register_simple("imx31-audmux", 0, imx35_audmux_res,
 294                                         ARRAY_SIZE(imx35_audmux_res));
 295 }
 296 #endif /* ifdef CONFIG_SOC_IMX35 */