arch/powerpc/cpu/mpc8xxx/fdt.c

   1 /*
   2  * Copyright 2009-2014 Freescale Semiconductor, Inc.
   3  *
   4  * This file is derived from arch/powerpc/cpu/mpc85xx/cpu.c and
   5  * arch/powerpc/cpu/mpc86xx/cpu.c. Basically this file contains
   6  * cpu specific common code for 85xx/86xx processors.
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <common.h>
  11 #include <libfdt.h>
  12 #include <fdt_support.h>
  13 #include <asm/mp.h>
  14 #include <asm/fsl_serdes.h>
  15 #include <phy.h>
  16 #include <hwconfig.h>
  17
  18 #ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
  19 #define CONFIG_USB_MAX_CONTROLLER_COUNT 1
  20 #endif
  21
  22 #if defined(CONFIG_MP) && (defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx))
  23 static int ft_del_cpuhandle(void *blob, int cpuhandle)
  24 {
  25         int off, ret = -FDT_ERR_NOTFOUND;
  26
  27         /* if we find a match, we'll delete at it which point the offsets are
  28          * invalid so we start over from the beginning
  29          */
  30         off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle",
  31                                                 &cpuhandle, 4);
  32         while (off != -FDT_ERR_NOTFOUND) {
  33                 fdt_delprop(blob, off, "cpu-handle");
  34                 ret = 1;
  35                 off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle",
  36                                 &cpuhandle, 4);
  37         }
  38
  39         return ret;
  40 }
  41
  42 void ft_fixup_num_cores(void *blob) {
  43         int off, num_cores, del_cores;
  44
  45         del_cores = 0;
  46         num_cores = cpu_numcores();
  47
  48         off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
  49         while (off != -FDT_ERR_NOTFOUND) {
  50                 u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0);
  51                 u32 phys_cpu_id = thread_to_core(*reg);
  52
  53                 if (!is_core_valid(phys_cpu_id) || is_core_disabled(phys_cpu_id)) {
  54                         int ph = fdt_get_phandle(blob, off);
  55
  56                         /* Delete the cpu node once there are no cpu handles */
  57                         if (-FDT_ERR_NOTFOUND == ft_del_cpuhandle(blob, ph)) {
  58                                 fdt_del_node(blob, off);
  59                                 del_cores++;
  60                         }
  61                         /* either we deleted some cpu handles or the cpu node
  62                          * so we reset the offset back to the start since we
  63                          * can't trust the offsets anymore
  64                          */
  65                         off = -1;
  66                 }
  67                 off = fdt_node_offset_by_prop_value(blob, off,
  68                                 "device_type", "cpu", 4);
  69         }
  70         debug ("%x core system found\n", num_cores);
  71         debug ("deleted %d extra core entry entries from device tree\n",
  72                                                                 del_cores);
  73 }
  74 #endif /* defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) */
  75
  76 #if defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB)
  77 static int fdt_fixup_usb_mode_phy_type(void *blob, const char *mode,
  78                                 const char *phy_type, int start_offset)
  79 {
  80         const char *compat_dr = "fsl-usb2-dr";
  81         const char *compat_mph = "fsl-usb2-mph";
  82         const char *prop_mode = "dr_mode";
  83         const char *prop_type = "phy_type";
  84         const char *node_type = NULL;
  85         int node_offset;
  86         int err;
  87
  88         node_offset = fdt_node_offset_by_compatible(blob,
  89                         start_offset, compat_mph);
  90         if (node_offset < 0) {
  91                 node_offset = fdt_node_offset_by_compatible(blob,
  92                         start_offset, compat_dr);
  93                 if (node_offset < 0) {
  94                         printf("WARNING: could not find compatible"
  95                                 " node %s or %s: %s.\n", compat_mph,
  96                                 compat_dr, fdt_strerror(node_offset));
  97                         return -1;
  98                 } else
  99                         node_type = compat_dr;
 100         } else
 101                 node_type = compat_mph;
 102
 103         if (mode) {
 104                 err = fdt_setprop(blob, node_offset, prop_mode, mode,
 105                                   strlen(mode) + 1);
 106                 if (err < 0)
 107                         printf("WARNING: could not set %s for %s: %s.\n",
 108                                prop_mode, node_type, fdt_strerror(err));
 109         }
 110
 111         if (phy_type) {
 112                 err = fdt_setprop(blob, node_offset, prop_type, phy_type,
 113                                   strlen(phy_type) + 1);
 114                 if (err < 0)
 115                         printf("WARNING: could not set %s for %s: %s.\n",
 116                                prop_type, node_type, fdt_strerror(err));
 117         }
 118
 119         return node_offset;
 120 }
 121
 122 void fdt_fixup_dr_usb(void *blob, bd_t *bd)
 123 {
 124         const char *modes[] = { "host", "peripheral", "otg" };
 125         const char *phys[] = { "ulpi", "utmi" };
 126         int usb_mode_off = -1;
 127         int usb_phy_off = -1;
 128         char str[5];
 129         int i, j;
 130
 131         for (i = 1; i <= CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
 132                 const char *dr_mode_type = NULL;
 133                 const char *dr_phy_type = NULL;
 134                 int mode_idx = -1, phy_idx = -1;
 135                 snprintf(str, 5, "%s%d", "usb", i);
 136                 if (hwconfig(str)) {
 137                         for (j = 0; j < ARRAY_SIZE(modes); j++) {
 138                                 if (hwconfig_subarg_cmp(str, "dr_mode",
 139                                                 modes[j])) {
 140                                         mode_idx = j;
 141                                         break;
 142                                 }
 143                         }
 144
 145                         for (j = 0; j < ARRAY_SIZE(phys); j++) {
 146                                 if (hwconfig_subarg_cmp(str, "phy_type",
 147                                                 phys[j])) {
 148                                         phy_idx = j;
 149                                         break;
 150                                 }
 151                         }
 152
 153                         if (mode_idx < 0 && phy_idx < 0) {
 154                                 printf("WARNING: invalid phy or mode\n");
 155                                 return;
 156                         }
 157
 158                         if (mode_idx > -1)
 159                                 dr_mode_type = modes[mode_idx];
 160
 161                         if (phy_idx > -1)
 162                                 dr_phy_type = phys[phy_idx];
 163                 }
 164
 165                 usb_mode_off = fdt_fixup_usb_mode_phy_type(blob,
 166                         dr_mode_type, NULL, usb_mode_off);
 167
 168                 if (usb_mode_off < 0)
 169                         return;
 170
 171                 usb_phy_off = fdt_fixup_usb_mode_phy_type(blob,
 172                         NULL, dr_phy_type, usb_phy_off);
 173
 174                 if (usb_phy_off < 0)
 175                         return;
 176         }
 177 }
 178 #endif /* defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB) */
 179
 180 /*
 181  * update crypto node properties to a specified revision of the SEC
 182  * called with sec_rev == 0 if not on an E processor
 183  */
 184 #if CONFIG_SYS_FSL_SEC_COMPAT == 2 /* SEC 2.x/3.x */
 185 void fdt_fixup_crypto_node(void *blob, int sec_rev)
 186 {
 187         static const struct sec_rev_prop {
 188                 u32 sec_rev;
 189                 u32 num_channels;
 190                 u32 channel_fifo_len;
 191                 u32 exec_units_mask;
 192                 u32 descriptor_types_mask;
 193         } sec_rev_prop_list [] = {
 194                 { 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
 195                 { 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
 196                 { 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
 197                 { 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
 198                 { 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
 199                 { 0x0301, 4, 24, 0xbfe, 0x03ab0ebf }, /* SEC 3.1 */
 200                 { 0x0303, 4, 24, 0x97c, 0x03a30abf }, /* SEC 3.3 */
 201         };
 202         static char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
 203                                    sizeof("fsl,secX.Y")];
 204         int crypto_node, sec_idx, err;
 205         char *p;
 206         u32 val;
 207
 208         /* locate crypto node based on lowest common compatible */
 209         crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
 210         if (crypto_node == -FDT_ERR_NOTFOUND)
 211                 return;
 212
 213         /* delete it if not on an E-processor */
 214         if (crypto_node > 0 && !sec_rev) {
 215                 fdt_del_node(blob, crypto_node);
 216                 return;
 217         }
 218
 219         /* else we got called for possible uprev */
 220         for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
 221                 if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
 222                         break;
 223
 224         if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
 225                 puts("warning: unknown SEC revision number\n");
 226                 return;
 227         }
 228
 229         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels);
 230         err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4);
 231         if (err < 0)
 232                 printf("WARNING: could not set crypto property: %s\n",
 233                        fdt_strerror(err));
 234
 235         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask);
 236         err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &val, 4);
 237         if (err < 0)
 238                 printf("WARNING: could not set crypto property: %s\n",
 239                        fdt_strerror(err));
 240
 241         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask);
 242         err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4);
 243         if (err < 0)
 244                 printf("WARNING: could not set crypto property: %s\n",
 245                        fdt_strerror(err));
 246
 247         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len);
 248         err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4);
 249         if (err < 0)
 250                 printf("WARNING: could not set crypto property: %s\n",
 251                        fdt_strerror(err));
 252
 253         val = 0;
 254         while (sec_idx >= 0) {
 255                 p = compat_strlist + val;
 256                 val += sprintf(p, "fsl,sec%d.%d",
 257                         (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
 258                         sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
 259                 sec_idx--;
 260         }
 261         err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val);
 262         if (err < 0)
 263                 printf("WARNING: could not set crypto property: %s\n",
 264                        fdt_strerror(err));
 265 }
 266 #elif CONFIG_SYS_FSL_SEC_COMPAT >= 4  /* SEC4 */
 267 static u8 caam_get_era(void)
 268 {
 269         static const struct {
 270                 u16 ip_id;
 271                 u8 maj_rev;
 272                 u8 era;
 273         } caam_eras[] = {
 274                 {0x0A10, 1, 1},
 275                 {0x0A10, 2, 2},
 276                 {0x0A12, 1, 3},
 277                 {0x0A14, 1, 3},
 278                 {0x0A14, 2, 4},
 279                 {0x0A16, 1, 4},
 280                 {0x0A10, 3, 4},
 281                 {0x0A11, 1, 4},
 282                 {0x0A18, 1, 4},
 283                 {0x0A11, 2, 5},
 284                 {0x0A12, 2, 5},
 285                 {0x0A13, 1, 5},
 286                 {0x0A1C, 1, 5}
 287         };
 288
 289         ccsr_sec_t __iomem *sec = (void __iomem *)CONFIG_SYS_FSL_SEC_ADDR;
 290         u32 secvid_ms = in_be32(&sec->secvid_ms);
 291         u32 ccbvid = in_be32(&sec->ccbvid);
 292         u16 ip_id = (secvid_ms & SEC_SECVID_MS_IPID_MASK) >>
 293                                 SEC_SECVID_MS_IPID_SHIFT;
 294         u8 maj_rev = (secvid_ms & SEC_SECVID_MS_MAJ_REV_MASK) >>
 295                                 SEC_SECVID_MS_MAJ_REV_SHIFT;
 296         u8 era = (ccbvid & SEC_CCBVID_ERA_MASK) >> SEC_CCBVID_ERA_SHIFT;
 297
 298         int i;
 299
 300         if (era)        /* This is '0' prior to CAAM ERA-6 */
 301                 return era;
 302
 303         for (i = 0; i < ARRAY_SIZE(caam_eras); i++)
 304                 if (caam_eras[i].ip_id == ip_id &&
 305                     caam_eras[i].maj_rev == maj_rev)
 306                         return caam_eras[i].era;
 307
 308         return 0;
 309 }
 310
 311 static void fdt_fixup_crypto_era(void *blob, u32 era)
 312 {
 313         int err;
 314         int crypto_node;
 315
 316         crypto_node = fdt_path_offset(blob, "crypto");
 317         if (crypto_node < 0) {
 318                 printf("WARNING: Missing crypto node\n");
 319                 return;
 320         }
 321
 322         err = fdt_setprop(blob, crypto_node, "fsl,sec-era", &era,
 323                           sizeof(era));
 324         if (err < 0) {
 325                 printf("ERROR: could not set fsl,sec-era property: %s\n",
 326                        fdt_strerror(err));
 327         }
 328 }
 329
 330 void fdt_fixup_crypto_node(void *blob, int sec_rev)
 331 {
 332         u8 era;
 333
 334         if (!sec_rev) {
 335                 fdt_del_node_and_alias(blob, "crypto");
 336                 return;
 337         }
 338
 339         /* Add SEC ERA information in compatible */
 340         era = caam_get_era();
 341         if (era) {
 342                 fdt_fixup_crypto_era(blob, era);
 343         } else {
 344                 printf("WARNING: Unable to get ERA for CAAM rev: %d\n",
 345                         sec_rev);
 346         }
 347 }
 348 #endif
 349
 350 int fdt_fixup_phy_connection(void *blob, int offset, phy_interface_t phyc)
 351 {
 352         return fdt_setprop_string(blob, offset, "phy-connection-type",
 353                                          phy_string_for_interface(phyc));
 354 }
 355
 356 #ifdef CONFIG_SYS_SRIO
 357 static inline void ft_disable_srio_port(void *blob, int srio_off, int port)
 358 {
 359         int off = fdt_node_offset_by_prop_value(blob, srio_off,
 360                         "cell-index", &port, 4);
 361         if (off >= 0) {
 362                 off = fdt_setprop_string(blob, off, "status", "disabled");
 363                 if (off > 0)
 364                         printf("WARNING unable to set status for fsl,srio "
 365                                 "port %d: %s\n", port, fdt_strerror(off));
 366         }
 367 }
 368
 369 static inline void ft_disable_rman(void *blob)
 370 {
 371         int off = fdt_node_offset_by_compatible(blob, -1, "fsl,rman");
 372         if (off >= 0) {
 373                 off = fdt_setprop_string(blob, off, "status", "disabled");
 374                 if (off > 0)
 375                         printf("WARNING unable to set status for fsl,rman %s\n",
 376                                 fdt_strerror(off));
 377         }
 378 }
 379
 380 static inline void ft_disable_rmu(void *blob)
 381 {
 382         int off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio-rmu");
 383         if (off >= 0) {
 384                 off = fdt_setprop_string(blob, off, "status", "disabled");
 385                 if (off > 0)
 386                         printf("WARNING unable to set status for "
 387                                 "fsl,srio-rmu %s\n", fdt_strerror(off));
 388         }
 389 }
 390
 391 void ft_srio_setup(void *blob)
 392 {
 393         int srio1_used = 0, srio2_used = 0;
 394         int srio_off;
 395
 396         /* search for srio node, if doesn't exist just return - nothing todo */
 397         srio_off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio");
 398         if (srio_off < 0)
 399                 return ;
 400
 401 #ifdef CONFIG_SRIO1
 402         if (is_serdes_configured(SRIO1))
 403                 srio1_used = 1;
 404 #endif
 405 #ifdef CONFIG_SRIO2
 406         if (is_serdes_configured(SRIO2))
 407                 srio2_used = 1;
 408 #endif
 409
 410         /* mark port1 disabled */
 411         if (!srio1_used)
 412                 ft_disable_srio_port(blob, srio_off, 1);
 413
 414         /* mark port2 disabled */
 415         if (!srio2_used)
 416                 ft_disable_srio_port(blob, srio_off, 2);
 417
 418         /* if both ports not used, disable controller, rmu and rman */
 419         if (!srio1_used && !srio2_used) {
 420                 fdt_setprop_string(blob, srio_off, "status", "disabled");
 421
 422                 ft_disable_rman(blob);
 423                 ft_disable_rmu(blob);
 424         }
 425 }
 426 #endif