arch/arm/mach-imx/mx6/module_fuse.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2019 NXP
   4  */
   5
   6 #include <common.h>
   7 #include <fdt_support.h>
   8 #include <asm/io.h>
   9 #include <asm/arch/sys_proto.h>
  10 #include <asm/arch/imx-regs.h>
  11 #include <asm/mach-imx/module_fuse.h>
  12 #include <linux/errno.h>
  13
  14 static struct fuse_entry_desc mx6_fuse_descs[] = {
  15 #if defined(CONFIG_MX6ULL)
  16         {MODULE_TSC, "/soc/aips-bus@2000000/tsc@2040000", 0x430, 22},
  17         {MODULE_ADC2, "/soc/aips-bus@2100000/adc@219c000", 0x430, 23},
  18         {MODULE_EPDC, "/soc/aips-bus@2200000/epdc@228c000", 0x430, 24},
  19         {MODULE_ESAI, "/soc/aips-bus@2000000/spba-bus@2000000/esai@2024000", 0x430, 25},
  20         {MODULE_FLEXCAN1, "/soc/aips-bus@2000000/can@2090000", 0x430, 26},
  21         {MODULE_FLEXCAN2, "/soc/aips-bus@2000000/can@2094000", 0x430, 27},
  22         {MODULE_SPDIF, "/soc/aips-bus@2000000/spba-bus@2000000/spdif@2004000", 0x440, 2},
  23         {MODULE_EIM, "/soc/aips-bus@2100000/weim@21b8000", 0x440, 3},
  24         {MODULE_SD1, "/soc/aips-bus@2100000/usdhc@2190000", 0x440, 4},
  25         {MODULE_SD2, "/soc/aips-bus@2100000/usdhc@2194000", 0x440, 5},
  26         {MODULE_QSPI1, "/soc/aips-bus@2100000/qspi@21e0000", 0x440, 6},
  27         {MODULE_GPMI, "/soc/gpmi-nand@1806000", 0x440, 7},
  28         {MODULE_APBHDMA, "/soc/dma-apbh@1804000", 0x440, 7},
  29         {MODULE_LCDIF, "/soc/aips-bus@2100000/lcdif@21c8000", 0x440, 8},
  30         {MODULE_PXP, "/soc/aips-bus@2100000/pxp@21cc000", 0x440, 9},
  31         {MODULE_CSI, "/soc/aips-bus@2100000/csi@21c4000", 0x440, 10},
  32         {MODULE_ADC1, "/soc/aips-bus@2100000/adc@2198000", 0x440, 11},
  33         {MODULE_ENET1, "/soc/aips-bus@2100000/ethernet@2188000", 0x440, 12},
  34         {MODULE_ENET2, "/soc/aips-bus@2000000/ethernet@20b4000", 0x440, 13},
  35         {MODULE_DCP, "/soc/aips-bus@2200000/dcp@2280000", 0x440, 14},
  36         {MODULE_USB_OTG2, "/soc/aips-bus@2100000/usb@2184200", 0x440, 15},
  37         {MODULE_SAI2, "/soc/aips-bus@2000000/spba-bus@2000000/sai@202c000", 0x440, 24},
  38         {MODULE_SAI3, "/soc/aips-bus@2000000/spba-bus@2000000/sai@2030000", 0x440, 24},
  39         {MODULE_DCP_CRYPTO, "/soc/aips-bus@2200000/dcp@2280000", 0x440, 25},
  40         {MODULE_UART5, "/soc/aips-bus@2100000/serial@21f4000", 0x440, 26},
  41         {MODULE_UART6, "/soc/aips-bus@2100000/serial@21fc000", 0x440, 26},
  42         {MODULE_UART7, "/soc/aips-bus@2000000/spba-bus@2000000/serial@2018000", 0x440, 26},
  43         {MODULE_UART8, "/soc/aips-bus@2200000/serial@2288000", 0x440, 26},
  44         {MODULE_PWM5, "/soc/aips-bus@2000000/pwm@20f0000", 0x440, 27},
  45         {MODULE_PWM6, "/soc/aips-bus@2000000/pwm@20f4000", 0x440, 27},
  46         {MODULE_PWM7, "/soc/aips-bus@2000000/pwm@20f8000", 0x440, 27},
  47         {MODULE_PWM8, "/soc/aips-bus@2000000/pwm@20fc000", 0x440, 27},
  48         {MODULE_ECSPI3, "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2010000", 0x440, 28},
  49         {MODULE_ECSPI4, "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2014000", 0x440, 28},
  50         {MODULE_I2C3, "/soc/aips-bus@2100000/i2c@21a8000", 0x440, 29},
  51         {MODULE_I2C4, "/soc/aips-bus@2100000/i2c@21f8000", 0x440, 29},
  52         {MODULE_GPT2, "/soc/aips-bus@2000000/gpt@20e8000", 0x440, 30},
  53         {MODULE_EPIT2, "/soc/aips-bus@2000000/epit@20d4000", 0x440, 31},
  54         /* Paths for older imx tree: */
  55         {MODULE_TSC, "/soc/aips-bus@02000000/tsc@02040000", 0x430, 22},
  56         {MODULE_ADC2, "/soc/aips-bus@02100000/adc@0219c000", 0x430, 23},
  57         {MODULE_EPDC, "/soc/aips-bus@02200000/epdc@0228c000", 0x430, 24},
  58         {MODULE_ESAI, "/soc/aips-bus@02000000/spba-bus@02000000/esai@02024000", 0x430, 25},
  59         {MODULE_FLEXCAN1, "/soc/aips-bus@02000000/can@02090000", 0x430, 26},
  60         {MODULE_FLEXCAN2, "/soc/aips-bus@02000000/can@02094000", 0x430, 27},
  61         {MODULE_SPDIF, "/soc/aips-bus@02000000/spba-bus@02000000/spdif@02004000", 0x440, 2},
  62         {MODULE_EIM, "/soc/aips-bus@02100000/weim@021b8000", 0x440, 3},
  63         {MODULE_SD1, "/soc/aips-bus@02100000/usdhc@02190000", 0x440, 4},
  64         {MODULE_SD2, "/soc/aips-bus@02100000/usdhc@02194000", 0x440, 5},
  65         {MODULE_QSPI1, "/soc/aips-bus@02100000/qspi@021e0000", 0x440, 6},
  66         {MODULE_GPMI, "/soc/gpmi-nand@01806000", 0x440, 7},
  67         {MODULE_APBHDMA, "/soc/dma-apbh@01804000", 0x440, 7},
  68         {MODULE_LCDIF, "/soc/aips-bus@02100000/lcdif@021c8000", 0x440, 8},
  69         {MODULE_PXP, "/soc/aips-bus@02100000/pxp@021cc000", 0x440, 9},
  70         {MODULE_CSI, "/soc/aips-bus@02100000/csi@021c4000", 0x440, 10},
  71         {MODULE_ADC1, "/soc/aips-bus@02100000/adc@02198000", 0x440, 11},
  72         {MODULE_ENET1, "/soc/aips-bus@02100000/ethernet@02188000", 0x440, 12},
  73         {MODULE_ENET2, "/soc/aips-bus@02000000/ethernet@020b4000", 0x440, 13},
  74         {MODULE_DCP, "/soc/aips-bus@02200000/dcp@02280000", 0x440, 14},
  75         {MODULE_USB_OTG2, "/soc/aips-bus@02100000/usb@02184200", 0x440, 15},
  76         {MODULE_SAI2, "/soc/aips-bus@02000000/spba-bus@02000000/sai@0202c000", 0x440, 24},
  77         {MODULE_SAI3, "/soc/aips-bus@02000000/spba-bus@02000000/sai@02030000", 0x440, 24},
  78         {MODULE_DCP_CRYPTO, "/soc/aips-bus@02200000/dcp@02280000", 0x440, 25},
  79         {MODULE_UART5, "/soc/aips-bus@02100000/serial@021f4000", 0x440, 26},
  80         {MODULE_UART6, "/soc/aips-bus@02100000/serial@021fc000", 0x440, 26},
  81         {MODULE_UART7, "/soc/aips-bus@02000000/spba-bus@02000000/serial@02018000", 0x440, 26},
  82         {MODULE_UART8, "/soc/aips-bus@02200000/serial@02288000", 0x440, 26},
  83         {MODULE_PWM5, "/soc/aips-bus@02000000/pwm@020f0000", 0x440, 27},
  84         {MODULE_PWM6, "/soc/aips-bus@02000000/pwm@020f4000", 0x440, 27},
  85         {MODULE_PWM7, "/soc/aips-bus@02000000/pwm@020f8000", 0x440, 27},
  86         {MODULE_PWM8, "/soc/aips-bus@02000000/pwm@020fc000", 0x440, 27},
  87         {MODULE_ECSPI3, "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02010000", 0x440, 28},
  88         {MODULE_ECSPI4, "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02014000", 0x440, 28},
  89         {MODULE_I2C3, "/soc/aips-bus@02100000/i2c@021a8000", 0x440, 29},
  90         {MODULE_I2C4, "/soc/aips-bus@02100000/i2c@021f8000", 0x440, 29},
  91         {MODULE_GPT2, "/soc/aips-bus@02000000/gpt@020e8000", 0x440, 30},
  92         {MODULE_EPIT2, "/soc/aips-bus@02000000/epit@020d4000", 0x440, 31},
  93 #elif defined(CONFIG_MX6UL)
  94         {MODULE_TSC, "/soc/aips-bus@2000000/tsc@2040000", 0x430, 22},
  95         {MODULE_ADC2, "/soc/aips-bus@2100000/adc@219c000", 0x430, 23},
  96         {MODULE_SIM1, "/soc/aips-bus@2100000/sim@218c000", 0x430, 24},
  97         {MODULE_SIM2, "/soc/aips-bus@2100000/sim@21b4000", 0x430, 25},
  98         {MODULE_FLEXCAN1, "/soc/aips-bus@2000000/can@2090000", 0x430, 26},
  99         {MODULE_FLEXCAN2, "/soc/aips-bus@2000000/can@2094000", 0x430, 27},
 100         {MODULE_SPDIF, "/soc/aips-bus@2000000/spba-bus@2000000/spdif@2004000", 0x440, 2},
 101         {MODULE_EIM, "/soc/aips-bus@2100000/weim@21b8000", 0x440, 3},
 102         {MODULE_SD1, "/soc/aips-bus@2100000/usdhc@2190000", 0x440, 4},
 103         {MODULE_SD2, "/soc/aips-bus@2100000/usdhc@2194000", 0x440, 5},
 104         {MODULE_QSPI1, "/soc/aips-bus@2100000/qspi@21e0000", 0x440, 6},
 105         {MODULE_GPMI, "/soc/gpmi-nand@1806000", 0x440, 7},
 106         {MODULE_APBHDMA, "/soc/dma-apbh@1804000", 0x440, 7},
 107         {MODULE_LCDIF, "/soc/aips-bus@2100000/lcdif@21c8000", 0x440, 8},
 108         {MODULE_PXP, "/soc/aips-bus@2100000/pxp@21cc000", 0x440, 9},
 109         {MODULE_CSI, "/soc/aips-bus@2100000/csi@21c4000", 0x440, 10},
 110         {MODULE_ADC1, "/soc/aips-bus@2100000/adc@2198000", 0x440, 11},
 111         {MODULE_ENET1, "/soc/aips-bus@2100000/ethernet@2188000", 0x440, 12},
 112         {MODULE_ENET2, "/soc/aips-bus@2000000/ethernet@20b4000", 0x440, 13},
 113         {MODULE_CAAM, "/soc/aips-bus@2100000/caam@2140000", 0x440, 14},
 114         {MODULE_USB_OTG2, "/soc/aips-bus@2100000/usb@2184200", 0x440, 15},
 115         {MODULE_SAI2, "/soc/aips-bus@2000000/spba-bus@2000000/sai@202c000", 0x440, 24},
 116         {MODULE_SAI3, "/soc/aips-bus@2000000/spba-bus@2000000/sai@2030000", 0x440, 24},
 117         {MODULE_BEE, "/soc/aips-bus@2000000/bee@2044000", 0x440, 25},
 118         {MODULE_UART5, "/soc/aips-bus@2100000/serial@21f4000", 0x440, 26},
 119         {MODULE_UART6, "/soc/aips-bus@2100000/serial@21fc000", 0x440, 26},
 120         {MODULE_UART7, "/soc/aips-bus@2000000/spba-bus@2000000/serial@2018000", 0x440, 26},
 121         {MODULE_UART8, "/soc/aips-bus@2000000/spba-bus@2000000/serial@2024000", 0x440, 26},
 122         {MODULE_PWM5, "/soc/aips-bus@2000000/pwm@20f0000", 0x440, 27},
 123         {MODULE_PWM6, "/soc/aips-bus@2000000/pwm@20f4000", 0x440, 27},
 124         {MODULE_PWM7, "/soc/aips-bus@2000000/pwm@20f8000", 0x440, 27},
 125         {MODULE_PWM8, "/soc/aips-bus@2000000/pwm@20fc000", 0x440, 27},
 126         {MODULE_ECSPI3, "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2010000", 0x440, 28},
 127         {MODULE_ECSPI4, "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2014000", 0x440, 28},
 128         {MODULE_I2C3, "/soc/aips-bus@2100000/i2c@21a8000", 0x440, 29},
 129         {MODULE_I2C4, "/soc/aips-bus@2100000/i2c@21f8000", 0x440, 29},
 130         {MODULE_GPT2, "/soc/aips-bus@2000000/gpt@20e8000", 0x440, 30},
 131         {MODULE_EPIT2, "/soc/aips-bus@2000000/epit@20d4000", 0x440, 31},
 132         /* Paths for older imx tree: */
 133         {MODULE_TSC, "/soc/aips-bus@02000000/tsc@02040000", 0x430, 22},
 134         {MODULE_ADC2, "/soc/aips-bus@02100000/adc@0219c000", 0x430, 23},
 135         {MODULE_SIM1, "/soc/aips-bus@02100000/sim@0218c000", 0x430, 24},
 136         {MODULE_SIM2, "/soc/aips-bus@02100000/sim@021b4000", 0x430, 25},
 137         {MODULE_FLEXCAN1, "/soc/aips-bus@02000000/can@02090000", 0x430, 26},
 138         {MODULE_FLEXCAN2, "/soc/aips-bus@02000000/can@02094000", 0x430, 27},
 139         {MODULE_SPDIF, "/soc/aips-bus@02000000/spba-bus@02000000/spdif@02004000", 0x440, 2},
 140         {MODULE_EIM, "/soc/aips-bus@02100000/weim@021b8000", 0x440, 3},
 141         {MODULE_SD1, "/soc/aips-bus@02100000/usdhc@02190000", 0x440, 4},
 142         {MODULE_SD2, "/soc/aips-bus@02100000/usdhc@02194000", 0x440, 5},
 143         {MODULE_QSPI1, "/soc/aips-bus@02100000/qspi@021e0000", 0x440, 6},
 144         {MODULE_GPMI, "/soc/gpmi-nand@01806000", 0x440, 7},
 145         {MODULE_APBHDMA, "/soc/dma-apbh@01804000", 0x440, 7},
 146         {MODULE_LCDIF, "/soc/aips-bus@02100000/lcdif@021c8000", 0x440, 8},
 147         {MODULE_PXP, "/soc/aips-bus@02100000/pxp@021cc000", 0x440, 9},
 148         {MODULE_CSI, "/soc/aips-bus@02100000/csi@021c4000", 0x440, 10},
 149         {MODULE_ADC1, "/soc/aips-bus@02100000/adc@02198000", 0x440, 11},
 150         {MODULE_ENET1, "/soc/aips-bus@02100000/ethernet@02188000", 0x440, 12},
 151         {MODULE_ENET2, "/soc/aips-bus@02000000/ethernet@020b4000", 0x440, 13},
 152         {MODULE_CAAM, "/soc/aips-bus@02100000/caam@2140000", 0x440, 14},
 153         {MODULE_USB_OTG2, "/soc/aips-bus@02100000/usb@02184200", 0x440, 15},
 154         {MODULE_SAI2, "/soc/aips-bus@02000000/spba-bus@02000000/sai@0202c000", 0x440, 24},
 155         {MODULE_SAI3, "/soc/aips-bus@02000000/spba-bus@02000000/sai@02030000", 0x440, 24},
 156         {MODULE_BEE, "/soc/aips-bus@02000000/bee@02044000", 0x440, 25},
 157         {MODULE_UART5, "/soc/aips-bus@02100000/serial@021f4000", 0x440, 26},
 158         {MODULE_UART6, "/soc/aips-bus@02100000/serial@021fc000", 0x440, 26},
 159         {MODULE_UART7, "/soc/aips-bus@02000000/spba-bus@02000000/serial@02018000", 0x440, 26},
 160         {MODULE_UART8, "/soc/aips-bus@02000000/spba-bus@02000000/serial@02024000", 0x440, 26},
 161         {MODULE_PWM5, "/soc/aips-bus@02000000/pwm@020f0000", 0x440, 27},
 162         {MODULE_PWM6, "/soc/aips-bus@02000000/pwm@020f4000", 0x440, 27},
 163         {MODULE_PWM7, "/soc/aips-bus@02000000/pwm@020f8000", 0x440, 27},
 164         {MODULE_PWM8, "/soc/aips-bus@02000000/pwm@020fc000", 0x440, 27},
 165         {MODULE_ECSPI3, "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02010000", 0x440, 28},
 166         {MODULE_ECSPI4, "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02014000", 0x440, 28},
 167         {MODULE_I2C3, "/soc/aips-bus@02100000/i2c@021a8000", 0x440, 29},
 168         {MODULE_I2C4, "/soc/aips-bus@02100000/i2c@021f8000", 0x440, 29},
 169         {MODULE_GPT2, "/soc/aips-bus@02000000/gpt@020e8000", 0x440, 30},
 170         {MODULE_EPIT2, "/soc/aips-bus@02000000/epit@020d4000", 0x440, 31},
 171 #endif
 172 };
 173
 174 u32 check_module_fused(enum fuse_module_type module)
 175 {
 176         u32 i, reg;
 177
 178         for (i = 0; i < ARRAY_SIZE(mx6_fuse_descs); i++) {
 179                 if (mx6_fuse_descs[i].module == module) {
 180                         reg = readl(OCOTP_BASE_ADDR +
 181                                     mx6_fuse_descs[i].fuse_word_offset);
 182                         if (reg & BIT(mx6_fuse_descs[i].fuse_bit_offset))
 183                                 return 1; /* disabled */
 184                         else
 185                                 return 0; /* enabled */
 186                 }
 187         }
 188
 189         return  0; /* Not has a fuse, always enabled */
 190 }
 191
 192 #ifdef CONFIG_OF_SYSTEM_SETUP
 193 int ft_system_setup(void *blob, bd_t *bd)
 194 {
 195         const char *status = "disabled";
 196         u32 i, reg;
 197         int rc, off;
 198
 199         for (i = 0; i < ARRAY_SIZE(mx6_fuse_descs); i++) {
 200                 reg = readl(OCOTP_BASE_ADDR +
 201                             mx6_fuse_descs[i].fuse_word_offset);
 202                 if (reg & BIT(mx6_fuse_descs[i].fuse_bit_offset)) {
 203                         off = fdt_path_offset(blob,
 204                                               mx6_fuse_descs[i].node_path);
 205
 206                         if (off < 0)
 207                                 continue; /* Not found, skip it */
 208 add_status:
 209                         rc = fdt_setprop(blob, nodeoff, "status", status,
 210                                          strlen(status) + 1);
 211                         if (rc) {
 212                                 if (rc == -FDT_ERR_NOSPACE) {
 213                                         rc = fdt_increase_size(blob, 512);
 214                                         if (!rc)
 215                                                 goto add_status;
 216                                 }
 217                                 printf("Unable to update property %s:%s, err=%s\n", mx6_fuse_descs[i].node_path, "status", fdt_strerror(rc));
 218                         } else {
 219                                 printf("Modify %s disabled\n", mx6_fuse_descs[i].node_path);
 220                         }
 221                 }
 222         }
 223
 224         return 0;
 225 }
 226 #endif
 227
 228 u32 esdhc_fused(ulong base_addr)
 229 {
 230         switch (base_addr) {
 231         case USDHC1_BASE_ADDR:
 232                 return check_module_fused(MODULE_SD1);
 233         case USDHC2_BASE_ADDR:
 234                 return check_module_fused(MODULE_SD2);
 235 #ifdef USDHC3_BASE_ADDR
 236         case USDHC3_BASE_ADDR:
 237                 return check_module_fused(MODULE_SD3);
 238 #endif
 239 #ifdef USDHC4_BASE_ADDR
 240         case USDHC4_BASE_ADDR:
 241                 return check_module_fused(MODULE_SD4);
 242 #endif
 243         default:
 244                 return 0;
 245         }
 246 }
 247
 248 u32 ecspi_fused(ulong base_addr)
 249 {
 250         switch (base_addr) {
 251         case ECSPI1_BASE_ADDR:
 252                 return check_module_fused(MODULE_ECSPI1);
 253         case ECSPI2_BASE_ADDR:
 254                 return check_module_fused(MODULE_ECSPI2);
 255         case ECSPI3_BASE_ADDR:
 256                 return check_module_fused(MODULE_ECSPI3);
 257         case ECSPI4_BASE_ADDR:
 258                 return check_module_fused(MODULE_ECSPI4);
 259 #ifdef ECSPI5_BASE_ADDR
 260         case ECSPI5_BASE_ADDR:
 261                 return check_module_fused(MODULE_ECSPI5);
 262 #endif
 263         default:
 264                 return 0;
 265         }
 266 }
 267
 268 u32 usb_fused(ulong base_addr)
 269 {
 270         int i = (base_addr - USB_BASE_ADDR) / 0x200;
 271
 272         return check_module_fused(MODULE_USB_OTG1 + i);
 273 }
 274
 275 u32 qspi_fused(ulong base_addr)
 276 {
 277         switch (base_addr) {
 278 #ifdef QSPI1_BASE_ADDR
 279         case QSPI1_BASE_ADDR:
 280                 return check_module_fused(MODULE_QSPI1);
 281 #endif
 282
 283 #ifdef QSPI2_BASE_ADDR
 284         case QSPI2_BASE_ADDR:
 285                 return check_module_fused(MODULE_QSPI2);
 286 #endif
 287         default:
 288                 return 0;
 289         }
 290 }
 291
 292 u32 i2c_fused(ulong base_addr)
 293 {
 294         switch (base_addr) {
 295         case I2C1_BASE_ADDR:
 296                 return check_module_fused(MODULE_I2C1);
 297         case I2C2_BASE_ADDR:
 298                 return check_module_fused(MODULE_I2C2);
 299         case I2C3_BASE_ADDR:
 300                 return check_module_fused(MODULE_I2C3);
 301 #ifdef I2C4_BASE_ADDR
 302         case I2C4_BASE_ADDR:
 303                 return check_module_fused(MODULE_I2C4);
 304 #endif
 305         }
 306
 307         return 0;
 308 }
 309
 310 u32 enet_fused(ulong base_addr)
 311 {
 312         switch (base_addr) {
 313         case ENET_BASE_ADDR:
 314                 return check_module_fused(MODULE_ENET1);
 315 #ifdef ENET2_BASE_ADDR
 316         case ENET2_BASE_ADDR:
 317                 return check_module_fused(MODULE_ENET2);
 318 #endif
 319         default:
 320                 return 0;
 321         }
 322 }