arch/powerpc/cpu/mpc8xxx/fdt.c

   1 /*
   2  * Copyright 2009-2011 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 ((*reg > num_cores-1) || (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 void fdt_fixup_usb_mode_phy_type(void *blob, const char *mode,
  91                                 const char *phy_type)
  92 {
  93         const char *compat = "fsl-usb2-dr";
  94         const char *prop_mode = "dr_mode";
  95         const char *prop_type = "phy_type";
  96         static int start_offset = -1;
  97         int node_offset;
  98         int err;
  99
 100         node_offset = fdt_node_offset_by_compatible(blob,
 101                         start_offset, compat);
 102         if (node_offset < 0) {
 103                 printf("WARNING: could not find compatible node %s: %s.\n",
 104                         compat, fdt_strerror(node_offset));
 105                 return;
 106         }
 107
 108         if (mode) {
 109                 err = fdt_setprop(blob, node_offset, prop_mode, mode,
 110                                   strlen(mode) + 1);
 111                 if (err < 0)
 112                         printf("WARNING: could not set %s for %s: %s.\n",
 113                                prop_mode, compat, fdt_strerror(err));
 114         }
 115
 116         if (phy_type) {
 117                 err = fdt_setprop(blob, node_offset, prop_type, phy_type,
 118                                   strlen(phy_type) + 1);
 119                 if (err < 0)
 120                         printf("WARNING: could not set %s for %s: %s.\n",
 121                                prop_type, compat, fdt_strerror(err));
 122         }
 123
 124         start_offset = node_offset;
 125 }
 126
 127 void fdt_fixup_dr_usb(void *blob, bd_t *bd)
 128 {
 129         const char *modes[] = { "host", "peripheral", "otg" };
 130         const char *phys[] = { "ulpi", "umti" };
 131         const char *mode = NULL;
 132         const char *phy_type = NULL;
 133         char usb1_defined = 0;
 134         char str[5];
 135         int i, j;
 136
 137         for (i = 1; i <= FSL_MAX_NUM_USB_CTRLS; i++) {
 138                 int mode_idx = -1, phy_idx = -1;
 139                 sprintf(str, "%s%d", "usb", i);
 140                 if (hwconfig(str)) {
 141                         for (j = 0; j < sizeof(modes); j++) {
 142                                 if (hwconfig_subarg_cmp(str, "dr_mode",
 143                                                 modes[j])) {
 144                                         mode_idx = j;
 145                                         break;
 146                                 }
 147                         }
 148                         for (j = 0; j < sizeof(phys); j++) {
 149                                 if (hwconfig_subarg_cmp(str, "phy_type",
 150                                                 phys[j])) {
 151                                         phy_idx = j;
 152                                         break;
 153                                 }
 154                         }
 155                         if (mode_idx >= 0)
 156                                 fdt_fixup_usb_mode_phy_type(blob,
 157                                         modes[mode_idx], NULL);
 158                         if (phy_idx >= 0)
 159                                 fdt_fixup_usb_mode_phy_type(blob,
 160                                         NULL, phys[phy_idx]);
 161                         if (!strcmp(str, "usb1"))
 162                                 usb1_defined = 1;
 163                         if (mode_idx < 0 && phy_idx < 0)
 164                                 printf("WARNING: invalid phy or mode\n");
 165                 }
 166         }
 167         if (!usb1_defined) {
 168                 mode = getenv("usb_dr_mode");
 169                 phy_type = getenv("usb_phy_type");
 170                 if (!mode && !phy_type)
 171                         return;
 172                 fdt_fixup_usb_mode_phy_type(blob, mode, phy_type);
 173         }
 174 }
 175 #endif /* CONFIG_HAS_FSL_DR_USB */
 176
 177 /*
 178  * update crypto node properties to a specified revision of the SEC
 179  * called with sec_rev == 0 if not on an E processor
 180  */
 181 #if CONFIG_SYS_FSL_SEC_COMPAT == 2 /* SEC 2.x/3.x */
 182 void fdt_fixup_crypto_node(void *blob, int sec_rev)
 183 {
 184         const struct sec_rev_prop {
 185                 u32 sec_rev;
 186                 u32 num_channels;
 187                 u32 channel_fifo_len;
 188                 u32 exec_units_mask;
 189                 u32 descriptor_types_mask;
 190         } sec_rev_prop_list [] = {
 191                 { 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
 192                 { 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
 193                 { 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
 194                 { 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
 195                 { 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
 196                 { 0x0301, 4, 24, 0xbfe, 0x03ab0ebf }, /* SEC 3.1 */
 197                 { 0x0303, 4, 24, 0x97c, 0x03a30abf }, /* SEC 3.3 */
 198         };
 199         char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
 200                             sizeof("fsl,secX.Y")];
 201         int crypto_node, sec_idx, err;
 202         char *p;
 203         u32 val;
 204
 205         /* locate crypto node based on lowest common compatible */
 206         crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
 207         if (crypto_node == -FDT_ERR_NOTFOUND)
 208                 return;
 209
 210         /* delete it if not on an E-processor */
 211         if (crypto_node > 0 && !sec_rev) {
 212                 fdt_del_node(blob, crypto_node);
 213                 return;
 214         }
 215
 216         /* else we got called for possible uprev */
 217         for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
 218                 if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
 219                         break;
 220
 221         if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
 222                 puts("warning: unknown SEC revision number\n");
 223                 return;
 224         }
 225
 226         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels);
 227         err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4);
 228         if (err < 0)
 229                 printf("WARNING: could not set crypto property: %s\n",
 230                        fdt_strerror(err));
 231
 232         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask);
 233         err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &val, 4);
 234         if (err < 0)
 235                 printf("WARNING: could not set crypto property: %s\n",
 236                        fdt_strerror(err));
 237
 238         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask);
 239         err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4);
 240         if (err < 0)
 241                 printf("WARNING: could not set crypto property: %s\n",
 242                        fdt_strerror(err));
 243
 244         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len);
 245         err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4);
 246         if (err < 0)
 247                 printf("WARNING: could not set crypto property: %s\n",
 248                        fdt_strerror(err));
 249
 250         val = 0;
 251         while (sec_idx >= 0) {
 252                 p = compat_strlist + val;
 253                 val += sprintf(p, "fsl,sec%d.%d",
 254                         (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
 255                         sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
 256                 sec_idx--;
 257         }
 258         err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val);
 259         if (err < 0)
 260                 printf("WARNING: could not set crypto property: %s\n",
 261                        fdt_strerror(err));
 262 }
 263 #elif CONFIG_SYS_FSL_SEC_COMPAT >= 4  /* SEC4 */
 264 void fdt_fixup_crypto_node(void *blob, int sec_rev)
 265 {
 266         if (!sec_rev)
 267                 fdt_del_node_and_alias(blob, "crypto");
 268 }
 269 #endif
 270
 271 int fdt_fixup_phy_connection(void *blob, int offset, phy_interface_t phyc)
 272 {
 273         return fdt_setprop_string(blob, offset, "phy-connection-type",
 274                                          phy_string_for_interface(phyc));
 275 }
 276
 277 #ifdef CONFIG_SYS_SRIO
 278 void ft_srio_setup(void *blob)
 279 {
 280 #ifdef CONFIG_SRIO1
 281         if (!is_serdes_configured(SRIO1)) {
 282                 fdt_del_node_and_alias(blob, "rio0");
 283         }
 284 #else
 285         fdt_del_node_and_alias(blob, "rio0");
 286 #endif
 287 #ifdef CONFIG_SRIO2
 288         if (!is_serdes_configured(SRIO2)) {
 289                 fdt_del_node_and_alias(blob, "rio1");
 290         }
 291 #else
 292         fdt_del_node_and_alias(blob, "rio1");
 293 #endif
 294 }
 295 #endif