git.sur5r.net Git - u-boot/blob - 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 #ifdef CONFIG_HAS_FSL_DR_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 = "fsl-usb2-dr";
  94         const char *prop_mode = "dr_mode";
  95         const char *prop_type = "phy_type";
  96         int node_offset;
  97         int err;
  98
  99         node_offset = fdt_node_offset_by_compatible(blob,
 100                         start_offset, compat);
 101         if (node_offset < 0) {
 102                 printf("WARNING: could not find compatible node %s: %s.\n",
 103                         compat, fdt_strerror(node_offset));
 104                 return -1;
 105         }
 106
 107         if (mode) {
 108                 err = fdt_setprop(blob, node_offset, prop_mode, mode,
 109                                   strlen(mode) + 1);
 110                 if (err < 0)
 111                         printf("WARNING: could not set %s for %s: %s.\n",
 112                                prop_mode, compat, fdt_strerror(err));
 113         }
 114
 115         if (phy_type) {
 116                 err = fdt_setprop(blob, node_offset, prop_type, phy_type,
 117                                   strlen(phy_type) + 1);
 118                 if (err < 0)
 119                         printf("WARNING: could not set %s for %s: %s.\n",
 120                                prop_type, compat, fdt_strerror(err));
 121         }
 122
 123         return node_offset;
 124 }
 125
 126 void fdt_fixup_dr_usb(void *blob, bd_t *bd)
 127 {
 128         const char *modes[] = { "host", "peripheral", "otg" };
 129         const char *phys[] = { "ulpi", "utmi" };
 130         const char *mode = NULL;
 131         const char *phy_type = NULL;
 132         char usb1_defined = 0;
 133         int usb_mode_off = -1;
 134         int usb_phy_off = -1;
 135         char str[5];
 136         int i, j;
 137
 138         for (i = 1; i <= FSL_MAX_NUM_USB_CTRLS; i++) {
 139                 int mode_idx = -1, phy_idx = -1;
 140                 snprintf(str, 5, "%s%d", "usb", i);
 141                 if (hwconfig(str)) {
 142                         for (j = 0; j < ARRAY_SIZE(modes); j++) {
 143                                 if (hwconfig_subarg_cmp(str, "dr_mode",
 144                                                 modes[j])) {
 145                                         mode_idx = j;
 146                                         break;
 147                                 }
 148                         }
 149                         for (j = 0; j < ARRAY_SIZE(phys); j++) {
 150                                 if (hwconfig_subarg_cmp(str, "phy_type",
 151                                                 phys[j])) {
 152                                         phy_idx = j;
 153                                         break;
 154                                 }
 155                         }
 156                         if (mode_idx >= 0) {
 157                                 usb_mode_off = fdt_fixup_usb_mode_phy_type(blob,
 158                                         modes[mode_idx], NULL, usb_mode_off);
 159                                 if (usb_mode_off < 0)
 160                                         return;
 161                         }
 162                         if (phy_idx >= 0) {
 163                                 usb_phy_off = fdt_fixup_usb_mode_phy_type(blob,
 164                                         NULL, phys[phy_idx], usb_phy_off);
 165                                 if (usb_phy_off < 0)
 166                                         return;
 167                         }
 168                         if (!strcmp(str, "usb1"))
 169                                 usb1_defined = 1;
 170                         if (mode_idx < 0 && phy_idx < 0)
 171                                 printf("WARNING: invalid phy or mode\n");
 172                 }
 173         }
 174         if (!usb1_defined) {
 175                 int usb_off = -1;
 176                 mode = getenv("usb_dr_mode");
 177                 phy_type = getenv("usb_phy_type");
 178                 if (!mode && !phy_type)
 179                         return;
 180                 fdt_fixup_usb_mode_phy_type(blob, mode, phy_type, usb_off);
 181         }
 182 }
 183 #endif /* CONFIG_HAS_FSL_DR_USB */
 184
 185 /*
 186  * update crypto node properties to a specified revision of the SEC
 187  * called with sec_rev == 0 if not on an E processor
 188  */
 189 #if CONFIG_SYS_FSL_SEC_COMPAT == 2 /* SEC 2.x/3.x */
 190 void fdt_fixup_crypto_node(void *blob, int sec_rev)
 191 {
 192         const struct sec_rev_prop {
 193                 u32 sec_rev;
 194                 u32 num_channels;
 195                 u32 channel_fifo_len;
 196                 u32 exec_units_mask;
 197                 u32 descriptor_types_mask;
 198         } sec_rev_prop_list [] = {
 199                 { 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
 200                 { 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
 201                 { 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
 202                 { 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
 203                 { 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
 204                 { 0x0301, 4, 24, 0xbfe, 0x03ab0ebf }, /* SEC 3.1 */
 205                 { 0x0303, 4, 24, 0x97c, 0x03a30abf }, /* SEC 3.3 */
 206         };
 207         char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
 208                             sizeof("fsl,secX.Y")];
 209         int crypto_node, sec_idx, err;
 210         char *p;
 211         u32 val;
 212
 213         /* locate crypto node based on lowest common compatible */
 214         crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
 215         if (crypto_node == -FDT_ERR_NOTFOUND)
 216                 return;
 217
 218         /* delete it if not on an E-processor */
 219         if (crypto_node > 0 && !sec_rev) {
 220                 fdt_del_node(blob, crypto_node);
 221                 return;
 222         }
 223
 224         /* else we got called for possible uprev */
 225         for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
 226                 if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
 227                         break;
 228
 229         if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
 230                 puts("warning: unknown SEC revision number\n");
 231                 return;
 232         }
 233
 234         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels);
 235         err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4);
 236         if (err < 0)
 237                 printf("WARNING: could not set crypto property: %s\n",
 238                        fdt_strerror(err));
 239
 240         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask);
 241         err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &val, 4);
 242         if (err < 0)
 243                 printf("WARNING: could not set crypto property: %s\n",
 244                        fdt_strerror(err));
 245
 246         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask);
 247         err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4);
 248         if (err < 0)
 249                 printf("WARNING: could not set crypto property: %s\n",
 250                        fdt_strerror(err));
 251
 252         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len);
 253         err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4);
 254         if (err < 0)
 255                 printf("WARNING: could not set crypto property: %s\n",
 256                        fdt_strerror(err));
 257
 258         val = 0;
 259         while (sec_idx >= 0) {
 260                 p = compat_strlist + val;
 261                 val += sprintf(p, "fsl,sec%d.%d",
 262                         (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
 263                         sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
 264                 sec_idx--;
 265         }
 266         err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val);
 267         if (err < 0)
 268                 printf("WARNING: could not set crypto property: %s\n",
 269                        fdt_strerror(err));
 270 }
 271 #elif CONFIG_SYS_FSL_SEC_COMPAT >= 4  /* SEC4 */
 272 void fdt_fixup_crypto_node(void *blob, int sec_rev)
 273 {
 274         if (!sec_rev)
 275                 fdt_del_node_and_alias(blob, "crypto");
 276 }
 277 #endif
 278
 279 int fdt_fixup_phy_connection(void *blob, int offset, phy_interface_t phyc)
 280 {
 281         return fdt_setprop_string(blob, offset, "phy-connection-type",
 282                                          phy_string_for_interface(phyc));
 283 }
 284
 285 #ifdef CONFIG_SYS_SRIO
 286 static inline void ft_disable_srio_port(void *blob, int srio_off, int port)
 287 {
 288         int off = fdt_node_offset_by_prop_value(blob, srio_off,
 289                         "cell-index", &port, 4);
 290         if (off >= 0) {
 291                 off = fdt_setprop_string(blob, off, "status", "disabled");
 292                 if (off > 0)
 293                         printf("WARNING unable to set status for fsl,srio "
 294                                 "port %d: %s\n", port, fdt_strerror(off));
 295         }
 296 }
 297
 298 static inline void ft_disable_rman(void *blob)
 299 {
 300         int off = fdt_node_offset_by_compatible(blob, -1, "fsl,rman");
 301         if (off >= 0) {
 302                 off = fdt_setprop_string(blob, off, "status", "disabled");
 303                 if (off > 0)
 304                         printf("WARNING unable to set status for fsl,rman %s\n",
 305                                 fdt_strerror(off));
 306         }
 307 }
 308
 309 static inline void ft_disable_rmu(void *blob)
 310 {
 311         int off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio-rmu");
 312         if (off >= 0) {
 313                 off = fdt_setprop_string(blob, off, "status", "disabled");
 314                 if (off > 0)
 315                         printf("WARNING unable to set status for "
 316                                 "fsl,srio-rmu %s\n", fdt_strerror(off));
 317         }
 318 }
 319
 320 void ft_srio_setup(void *blob)
 321 {
 322         int srio1_used = 0, srio2_used = 0;
 323         int srio_off;
 324
 325         /* search for srio node, if doesn't exist just return - nothing todo */
 326         srio_off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio");
 327         if (srio_off < 0)
 328                 return ;
 329
 330 #ifdef CONFIG_SRIO1
 331         if (is_serdes_configured(SRIO1))
 332                 srio1_used = 1;
 333 #endif
 334 #ifdef CONFIG_SRIO2
 335         if (is_serdes_configured(SRIO2))
 336                 srio2_used = 1;
 337 #endif
 338
 339         /* mark port1 disabled */
 340         if (!srio1_used)
 341                 ft_disable_srio_port(blob, srio_off, 1);
 342
 343         /* mark port2 disabled */
 344         if (!srio2_used)
 345                 ft_disable_srio_port(blob, srio_off, 2);
 346
 347         /* if both ports not used, disable controller, rmu and rman */
 348         if (!srio1_used && !srio2_used) {
 349                 fdt_setprop_string(blob, srio_off, "status", "disabled");
 350
 351                 ft_disable_rman(blob);
 352                 ft_disable_rmu(blob);
 353         }
 354 }
 355 #endif