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  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 #include <common.h>
  27 #include <libfdt.h>
  28 #include <fdt_support.h>
  29 #include <asm/mp.h>
  30 #include <asm/fsl_serdes.h>
  31 #include <phy.h>
  32 #include <hwconfig.h>
  33
  34 #define FSL_MAX_NUM_USB_CTRLS   2
  35
  36 #if defined(CONFIG_MP) && (defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx))
  37 static int ft_del_cpuhandle(void *blob, int cpuhandle)
  38 {
  39         int off, ret = -FDT_ERR_NOTFOUND;
  40
  41         /* if we find a match, we'll delete at it which point the offsets are
  42          * invalid so we start over from the beginning
  43          */
  44         off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle",
  45                                                 &cpuhandle, 4);
  46         while (off != -FDT_ERR_NOTFOUND) {
  47                 fdt_delprop(blob, off, "cpu-handle");
  48                 ret = 1;
  49                 off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle",
  50                                 &cpuhandle, 4);
  51         }
  52
  53         return ret;
  54 }
  55
  56 void ft_fixup_num_cores(void *blob) {
  57         int off, num_cores, del_cores;
  58
  59         del_cores = 0;
  60         num_cores = cpu_numcores();
  61
  62         off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
  63         while (off != -FDT_ERR_NOTFOUND) {
  64                 u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0);
  65
  66                 if (!is_core_valid(*reg) || is_core_disabled(*reg)) {
  67                         int ph = fdt_get_phandle(blob, off);
  68
  69                         /* Delete the cpu node once there are no cpu handles */
  70                         if (-FDT_ERR_NOTFOUND == ft_del_cpuhandle(blob, ph)) {
  71                                 fdt_del_node(blob, off);
  72                                 del_cores++;
  73                         }
  74                         /* either we deleted some cpu handles or the cpu node
  75                          * so we reset the offset back to the start since we
  76                          * can't trust the offsets anymore
  77                          */
  78                         off = -1;
  79                 }
  80                 off = fdt_node_offset_by_prop_value(blob, off,
  81                                 "device_type", "cpu", 4);
  82         }
  83         debug ("%x core system found\n", num_cores);
  84         debug ("deleted %d extra core entry entries from device tree\n",
  85                                                                 del_cores);
  86 }
  87 #endif /* defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) */
  88
  89 #if defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB)
  90 static int fdt_fixup_usb_mode_phy_type(void *blob, const char *mode,
  91                                 const char *phy_type, int start_offset)
  92 {
  93         const char *compat_dr = "fsl-usb2-dr";
  94         const char *compat_mph = "fsl-usb2-mph";
  95         const char *prop_mode = "dr_mode";
  96         const char *prop_type = "phy_type";
  97         const char *node_type = NULL;
  98         int node_offset;
  99         int err;
 100
 101         node_offset = fdt_node_offset_by_compatible(blob,
 102                         start_offset, compat_mph);
 103         if (node_offset < 0) {
 104                 node_offset = fdt_node_offset_by_compatible(blob,
 105                         start_offset, compat_dr);
 106                 if (node_offset < 0) {
 107                         printf("WARNING: could not find compatible"
 108                                 " node %s or %s: %s.\n", compat_mph,
 109                                 compat_dr, fdt_strerror(node_offset));
 110                         return -1;
 111                 } else
 112                         node_type = compat_dr;
 113         } else
 114                 node_type = compat_mph;
 115
 116         if (mode) {
 117                 err = fdt_setprop(blob, node_offset, prop_mode, mode,
 118                                   strlen(mode) + 1);
 119                 if (err < 0)
 120                         printf("WARNING: could not set %s for %s: %s.\n",
 121                                prop_mode, node_type, fdt_strerror(err));
 122         }
 123
 124         if (phy_type) {
 125                 err = fdt_setprop(blob, node_offset, prop_type, phy_type,
 126                                   strlen(phy_type) + 1);
 127                 if (err < 0)
 128                         printf("WARNING: could not set %s for %s: %s.\n",
 129                                prop_type, node_type, fdt_strerror(err));
 130         }
 131
 132         return node_offset;
 133 }
 134
 135 void fdt_fixup_dr_usb(void *blob, bd_t *bd)
 136 {
 137         const char *modes[] = { "host", "peripheral", "otg" };
 138         const char *phys[] = { "ulpi", "utmi" };
 139         const char *mode = NULL;
 140         const char *phy_type = NULL;
 141         char usb1_defined = 0;
 142         int usb_mode_off = -1;
 143         int usb_phy_off = -1;
 144         char str[5];
 145         int i, j;
 146
 147         for (i = 1; i <= FSL_MAX_NUM_USB_CTRLS; i++) {
 148                 int mode_idx = -1, phy_idx = -1;
 149                 snprintf(str, 5, "%s%d", "usb", i);
 150                 if (hwconfig(str)) {
 151                         for (j = 0; j < ARRAY_SIZE(modes); j++) {
 152                                 if (hwconfig_subarg_cmp(str, "dr_mode",
 153                                                 modes[j])) {
 154                                         mode_idx = j;
 155                                         break;
 156                                 }
 157                         }
 158                         for (j = 0; j < ARRAY_SIZE(phys); j++) {
 159                                 if (hwconfig_subarg_cmp(str, "phy_type",
 160                                                 phys[j])) {
 161                                         phy_idx = j;
 162                                         break;
 163                                 }
 164                         }
 165                         if (mode_idx >= 0) {
 166                                 usb_mode_off = fdt_fixup_usb_mode_phy_type(blob,
 167                                         modes[mode_idx], NULL, usb_mode_off);
 168                                 if (usb_mode_off < 0)
 169                                         return;
 170                         }
 171                         if (phy_idx >= 0) {
 172                                 usb_phy_off = fdt_fixup_usb_mode_phy_type(blob,
 173                                         NULL, phys[phy_idx], usb_phy_off);
 174                                 if (usb_phy_off < 0)
 175                                         return;
 176                         }
 177                         if (!strcmp(str, "usb1"))
 178                                 usb1_defined = 1;
 179                         if (mode_idx < 0 && phy_idx < 0)
 180                                 printf("WARNING: invalid phy or mode\n");
 181                 }
 182         }
 183         if (!usb1_defined) {
 184                 int usb_off = -1;
 185                 mode = getenv("usb_dr_mode");
 186                 phy_type = getenv("usb_phy_type");
 187                 if (!mode && !phy_type)
 188                         return;
 189                 fdt_fixup_usb_mode_phy_type(blob, mode, phy_type, usb_off);
 190         }
 191 }
 192 #endif /* defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB) */
 193
 194 /*
 195  * update crypto node properties to a specified revision of the SEC
 196  * called with sec_rev == 0 if not on an E processor
 197  */
 198 #if CONFIG_SYS_FSL_SEC_COMPAT == 2 /* SEC 2.x/3.x */
 199 void fdt_fixup_crypto_node(void *blob, int sec_rev)
 200 {
 201         const struct sec_rev_prop {
 202                 u32 sec_rev;
 203                 u32 num_channels;
 204                 u32 channel_fifo_len;
 205                 u32 exec_units_mask;
 206                 u32 descriptor_types_mask;
 207         } sec_rev_prop_list [] = {
 208                 { 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
 209                 { 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
 210                 { 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
 211                 { 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
 212                 { 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
 213                 { 0x0301, 4, 24, 0xbfe, 0x03ab0ebf }, /* SEC 3.1 */
 214                 { 0x0303, 4, 24, 0x97c, 0x03a30abf }, /* SEC 3.3 */
 215         };
 216         char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
 217                             sizeof("fsl,secX.Y")];
 218         int crypto_node, sec_idx, err;
 219         char *p;
 220         u32 val;
 221
 222         /* locate crypto node based on lowest common compatible */
 223         crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
 224         if (crypto_node == -FDT_ERR_NOTFOUND)
 225                 return;
 226
 227         /* delete it if not on an E-processor */
 228         if (crypto_node > 0 && !sec_rev) {
 229                 fdt_del_node(blob, crypto_node);
 230                 return;
 231         }
 232
 233         /* else we got called for possible uprev */
 234         for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
 235                 if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
 236                         break;
 237
 238         if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
 239                 puts("warning: unknown SEC revision number\n");
 240                 return;
 241         }
 242
 243         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels);
 244         err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4);
 245         if (err < 0)
 246                 printf("WARNING: could not set crypto property: %s\n",
 247                        fdt_strerror(err));
 248
 249         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask);
 250         err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &val, 4);
 251         if (err < 0)
 252                 printf("WARNING: could not set crypto property: %s\n",
 253                        fdt_strerror(err));
 254
 255         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask);
 256         err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4);
 257         if (err < 0)
 258                 printf("WARNING: could not set crypto property: %s\n",
 259                        fdt_strerror(err));
 260
 261         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len);
 262         err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4);
 263         if (err < 0)
 264                 printf("WARNING: could not set crypto property: %s\n",
 265                        fdt_strerror(err));
 266
 267         val = 0;
 268         while (sec_idx >= 0) {
 269                 p = compat_strlist + val;
 270                 val += sprintf(p, "fsl,sec%d.%d",
 271                         (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
 272                         sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
 273                 sec_idx--;
 274         }
 275         err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val);
 276         if (err < 0)
 277                 printf("WARNING: could not set crypto property: %s\n",
 278                        fdt_strerror(err));
 279 }
 280 #elif CONFIG_SYS_FSL_SEC_COMPAT >= 4  /* SEC4 */
 281 void fdt_fixup_crypto_node(void *blob, int sec_rev)
 282 {
 283         if (!sec_rev)
 284                 fdt_del_node_and_alias(blob, "crypto");
 285 }
 286 #endif
 287
 288 int fdt_fixup_phy_connection(void *blob, int offset, phy_interface_t phyc)
 289 {
 290         return fdt_setprop_string(blob, offset, "phy-connection-type",
 291                                          phy_string_for_interface(phyc));
 292 }
 293
 294 #ifdef CONFIG_SYS_SRIO
 295 static inline void ft_disable_srio_port(void *blob, int srio_off, int port)
 296 {
 297         int off = fdt_node_offset_by_prop_value(blob, srio_off,
 298                         "cell-index", &port, 4);
 299         if (off >= 0) {
 300                 off = fdt_setprop_string(blob, off, "status", "disabled");
 301                 if (off > 0)
 302                         printf("WARNING unable to set status for fsl,srio "
 303                                 "port %d: %s\n", port, fdt_strerror(off));
 304         }
 305 }
 306
 307 static inline void ft_disable_rman(void *blob)
 308 {
 309         int off = fdt_node_offset_by_compatible(blob, -1, "fsl,rman");
 310         if (off >= 0) {
 311                 off = fdt_setprop_string(blob, off, "status", "disabled");
 312                 if (off > 0)
 313                         printf("WARNING unable to set status for fsl,rman %s\n",
 314                                 fdt_strerror(off));
 315         }
 316 }
 317
 318 static inline void ft_disable_rmu(void *blob)
 319 {
 320         int off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio-rmu");
 321         if (off >= 0) {
 322                 off = fdt_setprop_string(blob, off, "status", "disabled");
 323                 if (off > 0)
 324                         printf("WARNING unable to set status for "
 325                                 "fsl,srio-rmu %s\n", fdt_strerror(off));
 326         }
 327 }
 328
 329 void ft_srio_setup(void *blob)
 330 {
 331         int srio1_used = 0, srio2_used = 0;
 332         int srio_off;
 333
 334         /* search for srio node, if doesn't exist just return - nothing todo */
 335         srio_off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio");
 336         if (srio_off < 0)
 337                 return ;
 338
 339 #ifdef CONFIG_SRIO1
 340         if (is_serdes_configured(SRIO1))
 341                 srio1_used = 1;
 342 #endif
 343 #ifdef CONFIG_SRIO2
 344         if (is_serdes_configured(SRIO2))
 345                 srio2_used = 1;
 346 #endif
 347
 348         /* mark port1 disabled */
 349         if (!srio1_used)
 350                 ft_disable_srio_port(blob, srio_off, 1);
 351
 352         /* mark port2 disabled */
 353         if (!srio2_used)
 354                 ft_disable_srio_port(blob, srio_off, 2);
 355
 356         /* if both ports not used, disable controller, rmu and rman */
 357         if (!srio1_used && !srio2_used) {
 358                 fdt_setprop_string(blob, srio_off, "status", "disabled");
 359
 360                 ft_disable_rman(blob);
 361                 ft_disable_rmu(blob);
 362         }
 363 }
 364 #endif