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

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Copyright (C) 1999,2000 Arm Limited
   4  *  Copyright (C) 2000 Deep Blue Solutions Ltd
   5  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
   6  *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
   7  *    - add MX31 specific definitions
   8  */
   9
  10 #include <linux/mm.h>
  11 #include <linux/init.h>
  12 #include <linux/err.h>
  13 #include <linux/io.h>
  14 #include <linux/pinctrl/machine.h>
  15
  16 #include <asm/pgtable.h>
  17 #include <asm/system_misc.h>
  18 #include <asm/hardware/cache-l2x0.h>
  19 #include <asm/mach/map.h>
  20
  21 #include "common.h"
  22 #include "crmregs-imx3.h"
  23 #include "devices/devices-common.h"
  24 #include "hardware.h"
  25 #include "iomux-v3.h"
  26
  27 void __iomem *mx3_ccm_base;
  28
  29 static void imx3_idle(void)
  30 {
  31         unsigned long reg = 0;
  32
  33         __asm__ __volatile__(
  34                 /* disable I and D cache */
  35                 "mrc p15, 0, %0, c1, c0, 0\n"
  36                 "bic %0, %0, #0x00001000\n"
  37                 "bic %0, %0, #0x00000004\n"
  38                 "mcr p15, 0, %0, c1, c0, 0\n"
  39                 /* invalidate I cache */
  40                 "mov %0, #0\n"
  41                 "mcr p15, 0, %0, c7, c5, 0\n"
  42                 /* clear and invalidate D cache */
  43                 "mov %0, #0\n"
  44                 "mcr p15, 0, %0, c7, c14, 0\n"
  45                 /* WFI */
  46                 "mov %0, #0\n"
  47                 "mcr p15, 0, %0, c7, c0, 4\n"
  48                 "nop\n" "nop\n" "nop\n" "nop\n"
  49                 "nop\n" "nop\n" "nop\n"
  50                 /* enable I and D cache */
  51                 "mrc p15, 0, %0, c1, c0, 0\n"
  52                 "orr %0, %0, #0x00001000\n"
  53                 "orr %0, %0, #0x00000004\n"
  54                 "mcr p15, 0, %0, c1, c0, 0\n"
  55                 : "=r" (reg));
  56 }
  57
  58 static void __iomem *imx3_ioremap_caller(phys_addr_t phys_addr, size_t size,
  59                                          unsigned int mtype, void *caller)
  60 {
  61         if (mtype == MT_DEVICE) {
  62                 /*
  63                  * Access all peripherals below 0x80000000 as nonshared device
  64                  * on mx3, but leave l2cc alone.  Otherwise cache corruptions
  65                  * can occur.
  66                  */
  67                 if (phys_addr < 0x80000000 &&
  68                                 !addr_in_module(phys_addr, MX3x_L2CC))
  69                         mtype = MT_DEVICE_NONSHARED;
  70         }
  71
  72         return __arm_ioremap_caller(phys_addr, size, mtype, caller);
  73 }
  74
  75 static void __init imx3_init_l2x0(void)
  76 {
  77 #ifdef CONFIG_CACHE_L2X0
  78         void __iomem *l2x0_base;
  79         void __iomem *clkctl_base;
  80
  81 /*
  82  * First of all, we must repair broken chip settings. There are some
  83  * i.MX35 CPUs in the wild, comming with bogus L2 cache settings. These
  84  * misconfigured CPUs will run amok immediately when the L2 cache gets enabled.
  85  * Workaraound is to setup the correct register setting prior enabling the
  86  * L2 cache. This should not hurt already working CPUs, as they are using the
  87  * same value.
  88  */
  89 #define L2_MEM_VAL 0x10
  90
  91         clkctl_base = ioremap(MX35_CLKCTL_BASE_ADDR, 4096);
  92         if (clkctl_base != NULL) {
  93                 writel(0x00000515, clkctl_base + L2_MEM_VAL);
  94                 iounmap(clkctl_base);
  95         } else {
  96                 pr_err("L2 cache: Cannot fix timing. Trying to continue without\n");
  97         }
  98
  99         l2x0_base = ioremap(MX3x_L2CC_BASE_ADDR, 4096);
 100         if (!l2x0_base) {
 101                 printk(KERN_ERR "remapping L2 cache area failed\n");
 102                 return;
 103         }
 104
 105         l2x0_init(l2x0_base, 0x00030024, 0x00000000);
 106 #endif
 107 }
 108
 109 #ifdef CONFIG_SOC_IMX31
 110 static struct map_desc mx31_io_desc[] __initdata = {
 111         imx_map_entry(MX31, X_MEMC, MT_DEVICE),
 112         imx_map_entry(MX31, AVIC, MT_DEVICE_NONSHARED),
 113         imx_map_entry(MX31, AIPS1, MT_DEVICE_NONSHARED),
 114         imx_map_entry(MX31, AIPS2, MT_DEVICE_NONSHARED),
 115         imx_map_entry(MX31, SPBA0, MT_DEVICE_NONSHARED),
 116 };
 117
 118 /*
 119  * This function initializes the memory map. It is called during the
 120  * system startup to create static physical to virtual memory mappings
 121  * for the IO modules.
 122  */
 123 void __init mx31_map_io(void)
 124 {
 125         iotable_init(mx31_io_desc, ARRAY_SIZE(mx31_io_desc));
 126 }
 127
 128 static void imx31_idle(void)
 129 {
 130         int reg = imx_readl(mx3_ccm_base + MXC_CCM_CCMR);
 131         reg &= ~MXC_CCM_CCMR_LPM_MASK;
 132         imx_writel(reg, mx3_ccm_base + MXC_CCM_CCMR);
 133
 134         imx3_idle();
 135 }
 136
 137 void __init imx31_init_early(void)
 138 {
 139         mxc_set_cpu_type(MXC_CPU_MX31);
 140         arch_ioremap_caller = imx3_ioremap_caller;
 141         arm_pm_idle = imx31_idle;
 142         mx3_ccm_base = MX31_IO_ADDRESS(MX31_CCM_BASE_ADDR);
 143 }
 144
 145 void __init mx31_init_irq(void)
 146 {
 147         mxc_init_irq(MX31_IO_ADDRESS(MX31_AVIC_BASE_ADDR));
 148 }
 149
 150 static struct sdma_script_start_addrs imx31_to1_sdma_script __initdata = {
 151         .per_2_per_addr = 1677,
 152 };
 153
 154 static struct sdma_script_start_addrs imx31_to2_sdma_script __initdata = {
 155         .ap_2_ap_addr = 423,
 156         .ap_2_bp_addr = 829,
 157         .bp_2_ap_addr = 1029,
 158 };
 159
 160 static struct sdma_platform_data imx31_sdma_pdata __initdata = {
 161         .fw_name = "sdma-imx31-to2.bin",
 162         .script_addrs = &imx31_to2_sdma_script,
 163 };
 164
 165 static const struct resource imx31_audmux_res[] __initconst = {
 166         DEFINE_RES_MEM(MX31_AUDMUX_BASE_ADDR, SZ_16K),
 167 };
 168
 169 static const struct resource imx31_rnga_res[] __initconst = {
 170         DEFINE_RES_MEM(MX31_RNGA_BASE_ADDR, SZ_16K),
 171 };
 172
 173 void __init imx31_soc_init(void)
 174 {
 175         int to_version = mx31_revision() >> 4;
 176
 177         imx3_init_l2x0();
 178
 179         mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
 180         mxc_device_init();
 181
 182         mxc_register_gpio("imx31-gpio", 0, MX31_GPIO1_BASE_ADDR, SZ_16K, MX31_INT_GPIO1, 0);
 183         mxc_register_gpio("imx31-gpio", 1, MX31_GPIO2_BASE_ADDR, SZ_16K, MX31_INT_GPIO2, 0);
 184         mxc_register_gpio("imx31-gpio", 2, MX31_GPIO3_BASE_ADDR, SZ_16K, MX31_INT_GPIO3, 0);
 185
 186         pinctrl_provide_dummies();
 187
 188         if (to_version == 1) {
 189                 strncpy(imx31_sdma_pdata.fw_name, "sdma-imx31-to1.bin",
 190                         strlen(imx31_sdma_pdata.fw_name));
 191                 imx31_sdma_pdata.script_addrs = &imx31_to1_sdma_script;
 192         }
 193
 194         imx_add_imx_sdma("imx31-sdma", MX31_SDMA_BASE_ADDR, MX31_INT_SDMA, &imx31_sdma_pdata);
 195
 196         imx_set_aips(MX31_IO_ADDRESS(MX31_AIPS1_BASE_ADDR));
 197         imx_set_aips(MX31_IO_ADDRESS(MX31_AIPS2_BASE_ADDR));
 198
 199         platform_device_register_simple("imx31-audmux", 0, imx31_audmux_res,
 200                                         ARRAY_SIZE(imx31_audmux_res));
 201         platform_device_register_simple("mxc_rnga", -1, imx31_rnga_res,
 202                                         ARRAY_SIZE(imx31_rnga_res));
 203 }
 204 #endif /* ifdef CONFIG_SOC_IMX31 */
 205
 206 #ifdef CONFIG_SOC_IMX35
 207 static struct map_desc mx35_io_desc[] __initdata = {
 208         imx_map_entry(MX35, X_MEMC, MT_DEVICE),
 209         imx_map_entry(MX35, AVIC, MT_DEVICE_NONSHARED),
 210         imx_map_entry(MX35, AIPS1, MT_DEVICE_NONSHARED),
 211         imx_map_entry(MX35, AIPS2, MT_DEVICE_NONSHARED),
 212         imx_map_entry(MX35, SPBA0, MT_DEVICE_NONSHARED),
 213 };
 214
 215 void __init mx35_map_io(void)
 216 {
 217         iotable_init(mx35_io_desc, ARRAY_SIZE(mx35_io_desc));
 218 }
 219
 220 static void imx35_idle(void)
 221 {
 222         int reg = imx_readl(mx3_ccm_base + MXC_CCM_CCMR);
 223         reg &= ~MXC_CCM_CCMR_LPM_MASK;
 224         reg |= MXC_CCM_CCMR_LPM_WAIT_MX35;
 225         imx_writel(reg, mx3_ccm_base + MXC_CCM_CCMR);
 226
 227         imx3_idle();
 228 }
 229
 230 void __init imx35_init_early(void)
 231 {
 232         mxc_set_cpu_type(MXC_CPU_MX35);
 233         mxc_iomux_v3_init(MX35_IO_ADDRESS(MX35_IOMUXC_BASE_ADDR));
 234         arm_pm_idle = imx35_idle;
 235         arch_ioremap_caller = imx3_ioremap_caller;
 236         mx3_ccm_base = MX35_IO_ADDRESS(MX35_CCM_BASE_ADDR);
 237 }
 238
 239 void __init mx35_init_irq(void)
 240 {
 241         mxc_init_irq(MX35_IO_ADDRESS(MX35_AVIC_BASE_ADDR));
 242 }
 243
 244 static struct sdma_script_start_addrs imx35_to1_sdma_script __initdata = {
 245         .ap_2_ap_addr = 642,
 246         .uart_2_mcu_addr = 817,
 247         .mcu_2_app_addr = 747,
 248         .uartsh_2_mcu_addr = 1183,
 249         .per_2_shp_addr = 1033,
 250         .mcu_2_shp_addr = 961,
 251         .ata_2_mcu_addr = 1333,
 252         .mcu_2_ata_addr = 1252,
 253         .app_2_mcu_addr = 683,
 254         .shp_2_per_addr = 1111,
 255         .shp_2_mcu_addr = 892,
 256 };
 257
 258 static struct sdma_script_start_addrs imx35_to2_sdma_script __initdata = {
 259         .ap_2_ap_addr = 729,
 260         .uart_2_mcu_addr = 904,
 261         .per_2_app_addr = 1597,
 262         .mcu_2_app_addr = 834,
 263         .uartsh_2_mcu_addr = 1270,
 264         .per_2_shp_addr = 1120,
 265         .mcu_2_shp_addr = 1048,
 266         .ata_2_mcu_addr = 1429,
 267         .mcu_2_ata_addr = 1339,
 268         .app_2_per_addr = 1531,
 269         .app_2_mcu_addr = 770,
 270         .shp_2_per_addr = 1198,
 271         .shp_2_mcu_addr = 979,
 272 };
 273
 274 static struct sdma_platform_data imx35_sdma_pdata __initdata = {
 275         .fw_name = "sdma-imx35-to2.bin",
 276         .script_addrs = &imx35_to2_sdma_script,
 277 };
 278
 279 static const struct resource imx35_audmux_res[] __initconst = {
 280         DEFINE_RES_MEM(MX35_AUDMUX_BASE_ADDR, SZ_16K),
 281 };
 282
 283 void __init imx35_soc_init(void)
 284 {
 285         int to_version = mx35_revision() >> 4;
 286
 287         imx3_init_l2x0();
 288
 289         mxc_arch_reset_init(MX35_IO_ADDRESS(MX35_WDOG_BASE_ADDR));
 290         mxc_device_init();
 291
 292         mxc_register_gpio("imx35-gpio", 0, MX35_GPIO1_BASE_ADDR, SZ_16K, MX35_INT_GPIO1, 0);
 293         mxc_register_gpio("imx35-gpio", 1, MX35_GPIO2_BASE_ADDR, SZ_16K, MX35_INT_GPIO2, 0);
 294         mxc_register_gpio("imx35-gpio", 2, MX35_GPIO3_BASE_ADDR, SZ_16K, MX35_INT_GPIO3, 0);
 295
 296         pinctrl_provide_dummies();
 297         if (to_version == 1) {
 298                 strncpy(imx35_sdma_pdata.fw_name, "sdma-imx35-to1.bin",
 299                         strlen(imx35_sdma_pdata.fw_name));
 300                 imx35_sdma_pdata.script_addrs = &imx35_to1_sdma_script;
 301         }
 302
 303         imx_add_imx_sdma("imx35-sdma", MX35_SDMA_BASE_ADDR, MX35_INT_SDMA, &imx35_sdma_pdata);
 304
 305         /* Setup AIPS registers */
 306         imx_set_aips(MX35_IO_ADDRESS(MX35_AIPS1_BASE_ADDR));
 307         imx_set_aips(MX35_IO_ADDRESS(MX35_AIPS2_BASE_ADDR));
 308
 309         /* i.mx35 has the i.mx31 type audmux */
 310         platform_device_register_simple("imx31-audmux", 0, imx35_audmux_res,
 311                                         ARRAY_SIZE(imx35_audmux_res));
 312 }
 313 #endif /* ifdef CONFIG_SOC_IMX35 */