arch/powerpc/cpu/mpc8xxx/fdt.c

   1 /*
   2  * Copyright 2009-2010 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
  30 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
  31 void ft_fixup_num_cores(void *blob) {
  32         int off, num_cores, del_cores;
  33
  34         del_cores = 0;
  35         num_cores = cpu_numcores();
  36
  37         off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
  38         while (off != -FDT_ERR_NOTFOUND) {
  39                 u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0);
  40
  41                 /* if we find a cpu node outside of what we expect delete it
  42                  * and reset the offset back to the start since we can't
  43                  * trust the offsets anymore
  44                  */
  45                 if (*reg > num_cores-1) {
  46                         fdt_del_node(blob, off);
  47                         del_cores++;
  48                         off = -1;
  49                 }
  50                 off = fdt_node_offset_by_prop_value(blob, off,
  51                                 "device_type", "cpu", 4);
  52         }
  53         debug ("%x core system found\n", num_cores);
  54         debug ("deleted %d extra core entry entries from device tree\n",
  55                                                                 del_cores);
  56 }
  57 #endif /* defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) */
  58
  59 #ifdef CONFIG_HAS_FSL_DR_USB
  60 void fdt_fixup_dr_usb(void *blob, bd_t *bd)
  61 {
  62         char *mode;
  63         char *type;
  64         const char *compat = "fsl-usb2-dr";
  65         const char *prop_mode = "dr_mode";
  66         const char *prop_type = "phy_type";
  67         int node_offset;
  68         int err;
  69
  70         mode = getenv("usb_dr_mode");
  71         type = getenv("usb_phy_type");
  72         if (!mode && !type)
  73                 return;
  74
  75         node_offset = fdt_node_offset_by_compatible(blob, 0, compat);
  76         if (node_offset < 0) {
  77                 printf("WARNING: could not find compatible node %s: %s.\n",
  78                         compat, fdt_strerror(node_offset));
  79                 return;
  80         }
  81
  82         if (mode) {
  83                 err = fdt_setprop(blob, node_offset, prop_mode, mode,
  84                                   strlen(mode) + 1);
  85                 if (err < 0)
  86                         printf("WARNING: could not set %s for %s: %s.\n",
  87                                prop_mode, compat, fdt_strerror(err));
  88         }
  89
  90         if (type) {
  91                 err = fdt_setprop(blob, node_offset, prop_type, type,
  92                                   strlen(type) + 1);
  93                 if (err < 0)
  94                         printf("WARNING: could not set %s for %s: %s.\n",
  95                                prop_type, compat, fdt_strerror(err));
  96         }
  97 }
  98 #endif /* CONFIG_HAS_FSL_DR_USB */
  99
 100 /*
 101  * update crypto node properties to a specified revision of the SEC
 102  * called with sec_rev == 0 if not on an E processor
 103  */
 104 #if CONFIG_SYS_FSL_SEC_COMPAT == 2 /* SEC 2.x/3.x */
 105 void fdt_fixup_crypto_node(void *blob, int sec_rev)
 106 {
 107         const struct sec_rev_prop {
 108                 u32 sec_rev;
 109                 u32 num_channels;
 110                 u32 channel_fifo_len;
 111                 u32 exec_units_mask;
 112                 u32 descriptor_types_mask;
 113         } sec_rev_prop_list [] = {
 114                 { 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
 115                 { 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
 116                 { 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
 117                 { 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
 118                 { 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
 119                 { 0x0301, 4, 24, 0xbfe, 0x03ab0ebf }, /* SEC 3.1 */
 120                 { 0x0303, 4, 24, 0x97c, 0x03a30abf }, /* SEC 3.3 */
 121         };
 122         char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
 123                             sizeof("fsl,secX.Y")];
 124         int crypto_node, sec_idx, err;
 125         char *p;
 126         u32 val;
 127
 128         /* locate crypto node based on lowest common compatible */
 129         crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
 130         if (crypto_node == -FDT_ERR_NOTFOUND)
 131                 return;
 132
 133         /* delete it if not on an E-processor */
 134         if (crypto_node > 0 && !sec_rev) {
 135                 fdt_del_node(blob, crypto_node);
 136                 return;
 137         }
 138
 139         /* else we got called for possible uprev */
 140         for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
 141                 if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
 142                         break;
 143
 144         if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
 145                 puts("warning: unknown SEC revision number\n");
 146                 return;
 147         }
 148
 149         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels);
 150         err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4);
 151         if (err < 0)
 152                 printf("WARNING: could not set crypto property: %s\n",
 153                        fdt_strerror(err));
 154
 155         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask);
 156         err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &val, 4);
 157         if (err < 0)
 158                 printf("WARNING: could not set crypto property: %s\n",
 159                        fdt_strerror(err));
 160
 161         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask);
 162         err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4);
 163         if (err < 0)
 164                 printf("WARNING: could not set crypto property: %s\n",
 165                        fdt_strerror(err));
 166
 167         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len);
 168         err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4);
 169         if (err < 0)
 170                 printf("WARNING: could not set crypto property: %s\n",
 171                        fdt_strerror(err));
 172
 173         val = 0;
 174         while (sec_idx >= 0) {
 175                 p = compat_strlist + val;
 176                 val += sprintf(p, "fsl,sec%d.%d",
 177                         (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
 178                         sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
 179                 sec_idx--;
 180         }
 181         err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val);
 182         if (err < 0)
 183                 printf("WARNING: could not set crypto property: %s\n",
 184                        fdt_strerror(err));
 185 }
 186 #elif CONFIG_SYS_FSL_SEC_COMPAT >= 4  /* SEC4 */
 187 void fdt_fixup_crypto_node(void *blob, int sec_rev)
 188 {
 189         if (!sec_rev)
 190                 fdt_del_node_and_alias(blob, "crypto");
 191 }
 192 #endif