arch/powerpc/cpu/mpc8xxx/fdt.c

   1 /*
   2  * Copyright 2009-2012 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 #define FSL_MAX_NUM_USB_CTRLS   2
  19
  20 #if defined(CONFIG_MP) && (defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx))
  21 static int ft_del_cpuhandle(void *blob, int cpuhandle)
  22 {
  23         int off, ret = -FDT_ERR_NOTFOUND;
  24
  25         /* if we find a match, we'll delete at it which point the offsets are
  26          * invalid so we start over from the beginning
  27          */
  28         off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle",
  29                                                 &cpuhandle, 4);
  30         while (off != -FDT_ERR_NOTFOUND) {
  31                 fdt_delprop(blob, off, "cpu-handle");
  32                 ret = 1;
  33                 off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle",
  34                                 &cpuhandle, 4);
  35         }
  36
  37         return ret;
  38 }
  39
  40 void ft_fixup_num_cores(void *blob) {
  41         int off, num_cores, del_cores;
  42
  43         del_cores = 0;
  44         num_cores = cpu_numcores();
  45
  46         off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
  47         while (off != -FDT_ERR_NOTFOUND) {
  48                 u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0);
  49                 u32 phys_cpu_id = thread_to_core(*reg);
  50
  51                 if (!is_core_valid(phys_cpu_id) || is_core_disabled(phys_cpu_id)) {
  52                         int ph = fdt_get_phandle(blob, off);
  53
  54                         /* Delete the cpu node once there are no cpu handles */
  55                         if (-FDT_ERR_NOTFOUND == ft_del_cpuhandle(blob, ph)) {
  56                                 fdt_del_node(blob, off);
  57                                 del_cores++;
  58                         }
  59                         /* either we deleted some cpu handles or the cpu node
  60                          * so we reset the offset back to the start since we
  61                          * can't trust the offsets anymore
  62                          */
  63                         off = -1;
  64                 }
  65                 off = fdt_node_offset_by_prop_value(blob, off,
  66                                 "device_type", "cpu", 4);
  67         }
  68         debug ("%x core system found\n", num_cores);
  69         debug ("deleted %d extra core entry entries from device tree\n",
  70                                                                 del_cores);
  71 }
  72 #endif /* defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) */
  73
  74 #if defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB)
  75 static int fdt_fixup_usb_mode_phy_type(void *blob, const char *mode,
  76                                 const char *phy_type, int start_offset)
  77 {
  78         const char *compat_dr = "fsl-usb2-dr";
  79         const char *compat_mph = "fsl-usb2-mph";
  80         const char *prop_mode = "dr_mode";
  81         const char *prop_type = "phy_type";
  82         const char *node_type = NULL;
  83         int node_offset;
  84         int err;
  85
  86         node_offset = fdt_node_offset_by_compatible(blob,
  87                         start_offset, compat_mph);
  88         if (node_offset < 0) {
  89                 node_offset = fdt_node_offset_by_compatible(blob,
  90                         start_offset, compat_dr);
  91                 if (node_offset < 0) {
  92                         printf("WARNING: could not find compatible"
  93                                 " node %s or %s: %s.\n", compat_mph,
  94                                 compat_dr, fdt_strerror(node_offset));
  95                         return -1;
  96                 } else
  97                         node_type = compat_dr;
  98         } else
  99                 node_type = compat_mph;
 100
 101         if (mode) {
 102                 err = fdt_setprop(blob, node_offset, prop_mode, mode,
 103                                   strlen(mode) + 1);
 104                 if (err < 0)
 105                         printf("WARNING: could not set %s for %s: %s.\n",
 106                                prop_mode, node_type, fdt_strerror(err));
 107         }
 108
 109         if (phy_type) {
 110                 err = fdt_setprop(blob, node_offset, prop_type, phy_type,
 111                                   strlen(phy_type) + 1);
 112                 if (err < 0)
 113                         printf("WARNING: could not set %s for %s: %s.\n",
 114                                prop_type, node_type, fdt_strerror(err));
 115         }
 116
 117         return node_offset;
 118 }
 119
 120 void fdt_fixup_dr_usb(void *blob, bd_t *bd)
 121 {
 122         const char *modes[] = { "host", "peripheral", "otg" };
 123         const char *phys[] = { "ulpi", "utmi" };
 124         const char *mode = NULL;
 125         const char *phy_type = NULL;
 126         const char *dr_mode_type = NULL;
 127         const char *dr_phy_type = NULL;
 128         char usb1_defined = 0;
 129         int usb_mode_off = -1;
 130         int usb_phy_off = -1;
 131         char str[5];
 132         int i, j;
 133
 134         for (i = 1; i <= FSL_MAX_NUM_USB_CTRLS; i++) {
 135                 int mode_idx = -1, phy_idx = -1;
 136                 snprintf(str, 5, "%s%d", "usb", i);
 137                 if (hwconfig(str)) {
 138                         for (j = 0; j < ARRAY_SIZE(modes); j++) {
 139                                 if (hwconfig_subarg_cmp(str, "dr_mode",
 140                                                 modes[j])) {
 141                                         mode_idx = j;
 142                                         break;
 143                                 }
 144                         }
 145
 146                         for (j = 0; j < ARRAY_SIZE(phys); j++) {
 147                                 if (hwconfig_subarg_cmp(str, "phy_type",
 148                                                 phys[j])) {
 149                                         phy_idx = j;
 150                                         break;
 151                                 }
 152                         }
 153
 154                         if (mode_idx < 0 || phy_idx < 0) {
 155                                 puts("ERROR: wrong usb mode/phy defined!!\n");
 156                                 return;
 157                         }
 158
 159                         dr_mode_type = modes[mode_idx];
 160                         dr_phy_type = phys[phy_idx];
 161
 162                         /* use usb_dr_mode and usb_phy_type if
 163                            usb1_defined = 0; these variables are to
 164                            be deprecated */
 165                         if (!strcmp(str, "usb1"))
 166                                 usb1_defined = 1;
 167
 168                         if (mode_idx < 0 && phy_idx < 0) {
 169                                 printf("WARNING: invalid phy or mode\n");
 170                                 return;
 171                         }
 172                 }
 173
 174                 usb_mode_off = fdt_fixup_usb_mode_phy_type(blob,
 175                         dr_mode_type, NULL, usb_mode_off);
 176
 177                 if (usb_mode_off < 0)
 178                         return;
 179
 180                 usb_phy_off = fdt_fixup_usb_mode_phy_type(blob,
 181                         NULL, dr_phy_type, usb_phy_off);
 182
 183                 if (usb_phy_off < 0)
 184                         return;
 185         }
 186
 187         if (!usb1_defined) {
 188                 int usb_off = -1;
 189                 mode = getenv("usb_dr_mode");
 190                 phy_type = getenv("usb_phy_type");
 191                 if (mode || phy_type) {
 192                         printf("WARNING: usb_dr_mode and usb_phy_type "
 193                                 "are to be deprecated soon. Use "
 194                                 "hwconfig to set these values instead!!\n");
 195                         fdt_fixup_usb_mode_phy_type(blob, mode,
 196                                 phy_type, usb_off);
 197                 }
 198         }
 199 }
 200 #endif /* defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB) */
 201
 202 /*
 203  * update crypto node properties to a specified revision of the SEC
 204  * called with sec_rev == 0 if not on an E processor
 205  */
 206 #if CONFIG_SYS_FSL_SEC_COMPAT == 2 /* SEC 2.x/3.x */
 207 void fdt_fixup_crypto_node(void *blob, int sec_rev)
 208 {
 209         static const struct sec_rev_prop {
 210                 u32 sec_rev;
 211                 u32 num_channels;
 212                 u32 channel_fifo_len;
 213                 u32 exec_units_mask;
 214                 u32 descriptor_types_mask;
 215         } sec_rev_prop_list [] = {
 216                 { 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
 217                 { 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
 218                 { 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
 219                 { 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
 220                 { 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
 221                 { 0x0301, 4, 24, 0xbfe, 0x03ab0ebf }, /* SEC 3.1 */
 222                 { 0x0303, 4, 24, 0x97c, 0x03a30abf }, /* SEC 3.3 */
 223         };
 224         static char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
 225                                    sizeof("fsl,secX.Y")];
 226         int crypto_node, sec_idx, err;
 227         char *p;
 228         u32 val;
 229
 230         /* locate crypto node based on lowest common compatible */
 231         crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
 232         if (crypto_node == -FDT_ERR_NOTFOUND)
 233                 return;
 234
 235         /* delete it if not on an E-processor */
 236         if (crypto_node > 0 && !sec_rev) {
 237                 fdt_del_node(blob, crypto_node);
 238                 return;
 239         }
 240
 241         /* else we got called for possible uprev */
 242         for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
 243                 if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
 244                         break;
 245
 246         if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
 247                 puts("warning: unknown SEC revision number\n");
 248                 return;
 249         }
 250
 251         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels);
 252         err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4);
 253         if (err < 0)
 254                 printf("WARNING: could not set crypto property: %s\n",
 255                        fdt_strerror(err));
 256
 257         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask);
 258         err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &val, 4);
 259         if (err < 0)
 260                 printf("WARNING: could not set crypto property: %s\n",
 261                        fdt_strerror(err));
 262
 263         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask);
 264         err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4);
 265         if (err < 0)
 266                 printf("WARNING: could not set crypto property: %s\n",
 267                        fdt_strerror(err));
 268
 269         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len);
 270         err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4);
 271         if (err < 0)
 272                 printf("WARNING: could not set crypto property: %s\n",
 273                        fdt_strerror(err));
 274
 275         val = 0;
 276         while (sec_idx >= 0) {
 277                 p = compat_strlist + val;
 278                 val += sprintf(p, "fsl,sec%d.%d",
 279                         (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
 280                         sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
 281                 sec_idx--;
 282         }
 283         err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val);
 284         if (err < 0)
 285                 printf("WARNING: could not set crypto property: %s\n",
 286                        fdt_strerror(err));
 287 }
 288 #elif CONFIG_SYS_FSL_SEC_COMPAT >= 4  /* SEC4 */
 289 static u8 caam_get_era(void)
 290 {
 291         static const struct {
 292                 u16 ip_id;
 293                 u8 maj_rev;
 294                 u8 era;
 295         } caam_eras[] = {
 296                 {0x0A10, 1, 1},
 297                 {0x0A10, 2, 2},
 298                 {0x0A12, 1, 3},
 299                 {0x0A14, 1, 3},
 300                 {0x0A14, 2, 4},
 301                 {0x0A16, 1, 4},
 302                 {0x0A10, 3, 4},
 303                 {0x0A11, 1, 4},
 304                 {0x0A18, 1, 4},
 305                 {0x0A11, 2, 5},
 306                 {0x0A12, 2, 5},
 307                 {0x0A13, 1, 5},
 308                 {0x0A1C, 1, 5}
 309         };
 310
 311         ccsr_sec_t __iomem *sec = (void __iomem *)CONFIG_SYS_FSL_SEC_ADDR;
 312         u32 secvid_ms = in_be32(&sec->secvid_ms);
 313         u32 ccbvid = in_be32(&sec->ccbvid);
 314         u16 ip_id = (secvid_ms & SEC_SECVID_MS_IPID_MASK) >>
 315                                 SEC_SECVID_MS_IPID_SHIFT;
 316         u8 maj_rev = (secvid_ms & SEC_SECVID_MS_MAJ_REV_MASK) >>
 317                                 SEC_SECVID_MS_MAJ_REV_SHIFT;
 318         u8 era = (ccbvid & SEC_CCBVID_ERA_MASK) >> SEC_CCBVID_ERA_SHIFT;
 319
 320         int i;
 321
 322         if (era)        /* This is '0' prior to CAAM ERA-6 */
 323                 return era;
 324
 325         for (i = 0; i < ARRAY_SIZE(caam_eras); i++)
 326                 if (caam_eras[i].ip_id == ip_id &&
 327                     caam_eras[i].maj_rev == maj_rev)
 328                         return caam_eras[i].era;
 329
 330         return 0;
 331 }
 332
 333 static void fdt_fixup_crypto_era(void *blob, u32 era)
 334 {
 335         int err;
 336         int crypto_node;
 337
 338         crypto_node = fdt_path_offset(blob, "crypto");
 339         if (crypto_node < 0) {
 340                 printf("WARNING: Missing crypto node\n");
 341                 return;
 342         }
 343
 344         err = fdt_setprop(blob, crypto_node, "fsl,sec-era", &era,
 345                           sizeof(era));
 346         if (err < 0) {
 347                 printf("ERROR: could not set fsl,sec-era property: %s\n",
 348                        fdt_strerror(err));
 349         }
 350 }
 351
 352 void fdt_fixup_crypto_node(void *blob, int sec_rev)
 353 {
 354         u8 era;
 355
 356         if (!sec_rev) {
 357                 fdt_del_node_and_alias(blob, "crypto");
 358                 return;
 359         }
 360
 361         /* Add SEC ERA information in compatible */
 362         era = caam_get_era();
 363         if (era) {
 364                 fdt_fixup_crypto_era(blob, era);
 365         } else {
 366                 printf("WARNING: Unable to get ERA for CAAM rev: %d\n",
 367                         sec_rev);
 368         }
 369 }
 370 #endif
 371
 372 int fdt_fixup_phy_connection(void *blob, int offset, phy_interface_t phyc)
 373 {
 374         return fdt_setprop_string(blob, offset, "phy-connection-type",
 375                                          phy_string_for_interface(phyc));
 376 }
 377
 378 #ifdef CONFIG_SYS_SRIO
 379 static inline void ft_disable_srio_port(void *blob, int srio_off, int port)
 380 {
 381         int off = fdt_node_offset_by_prop_value(blob, srio_off,
 382                         "cell-index", &port, 4);
 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 fsl,srio "
 387                                 "port %d: %s\n", port, fdt_strerror(off));
 388         }
 389 }
 390
 391 static inline void ft_disable_rman(void *blob)
 392 {
 393         int off = fdt_node_offset_by_compatible(blob, -1, "fsl,rman");
 394         if (off >= 0) {
 395                 off = fdt_setprop_string(blob, off, "status", "disabled");
 396                 if (off > 0)
 397                         printf("WARNING unable to set status for fsl,rman %s\n",
 398                                 fdt_strerror(off));
 399         }
 400 }
 401
 402 static inline void ft_disable_rmu(void *blob)
 403 {
 404         int off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio-rmu");
 405         if (off >= 0) {
 406                 off = fdt_setprop_string(blob, off, "status", "disabled");
 407                 if (off > 0)
 408                         printf("WARNING unable to set status for "
 409                                 "fsl,srio-rmu %s\n", fdt_strerror(off));
 410         }
 411 }
 412
 413 void ft_srio_setup(void *blob)
 414 {
 415         int srio1_used = 0, srio2_used = 0;
 416         int srio_off;
 417
 418         /* search for srio node, if doesn't exist just return - nothing todo */
 419         srio_off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio");
 420         if (srio_off < 0)
 421                 return ;
 422
 423 #ifdef CONFIG_SRIO1
 424         if (is_serdes_configured(SRIO1))
 425                 srio1_used = 1;
 426 #endif
 427 #ifdef CONFIG_SRIO2
 428         if (is_serdes_configured(SRIO2))
 429                 srio2_used = 1;
 430 #endif
 431
 432         /* mark port1 disabled */
 433         if (!srio1_used)
 434                 ft_disable_srio_port(blob, srio_off, 1);
 435
 436         /* mark port2 disabled */
 437         if (!srio2_used)
 438                 ft_disable_srio_port(blob, srio_off, 2);
 439
 440         /* if both ports not used, disable controller, rmu and rman */
 441         if (!srio1_used && !srio2_used) {
 442                 fdt_setprop_string(blob, srio_off, "status", "disabled");
 443
 444                 ft_disable_rman(blob);
 445                 ft_disable_rmu(blob);
 446         }
 447 }
 448 #endif