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 #include <asm/mp.h>
  30 #include <asm/fsl_enet.h>
  31
  32 #if defined(CONFIG_MP) && (defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx))
  33 static int ft_del_cpuhandle(void *blob, int cpuhandle)
  34 {
  35         int off, ret = -FDT_ERR_NOTFOUND;
  36
  37         /* if we find a match, we'll delete at it which point the offsets are
  38          * invalid so we start over from the beginning
  39          */
  40         off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle",
  41                                                 &cpuhandle, 4);
  42         while (off != -FDT_ERR_NOTFOUND) {
  43                 fdt_delprop(blob, off, "cpu-handle");
  44                 ret = 1;
  45                 off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle",
  46                                 &cpuhandle, 4);
  47         }
  48
  49         return ret;
  50 }
  51
  52 void ft_fixup_num_cores(void *blob) {
  53         int off, num_cores, del_cores;
  54
  55         del_cores = 0;
  56         num_cores = cpu_numcores();
  57
  58         off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
  59         while (off != -FDT_ERR_NOTFOUND) {
  60                 u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0);
  61
  62                 if ((*reg > num_cores-1) || (is_core_disabled(*reg))) {
  63                         int ph = fdt_get_phandle(blob, off);
  64
  65                         /* Delete the cpu node once there are no cpu handles */
  66                         if (-FDT_ERR_NOTFOUND == ft_del_cpuhandle(blob, ph)) {
  67                                 fdt_del_node(blob, off);
  68                                 del_cores++;
  69                         }
  70                         /* either we deleted some cpu handles or the cpu node
  71                          * so we reset the offset back to the start since we
  72                          * can't trust the offsets anymore
  73                          */
  74                         off = -1;
  75                 }
  76                 off = fdt_node_offset_by_prop_value(blob, off,
  77                                 "device_type", "cpu", 4);
  78         }
  79         debug ("%x core system found\n", num_cores);
  80         debug ("deleted %d extra core entry entries from device tree\n",
  81                                                                 del_cores);
  82 }
  83 #endif /* defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) */
  84
  85 #ifdef CONFIG_HAS_FSL_DR_USB
  86 void fdt_fixup_dr_usb(void *blob, bd_t *bd)
  87 {
  88         char *mode;
  89         char *type;
  90         const char *compat = "fsl-usb2-dr";
  91         const char *prop_mode = "dr_mode";
  92         const char *prop_type = "phy_type";
  93         int node_offset;
  94         int err;
  95
  96         mode = getenv("usb_dr_mode");
  97         type = getenv("usb_phy_type");
  98         if (!mode && !type)
  99                 return;
 100
 101         node_offset = fdt_node_offset_by_compatible(blob, 0, 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 (type) {
 117                 err = fdt_setprop(blob, node_offset, prop_type, type,
 118                                   strlen(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 #endif /* CONFIG_HAS_FSL_DR_USB */
 125
 126 /*
 127  * update crypto node properties to a specified revision of the SEC
 128  * called with sec_rev == 0 if not on an E processor
 129  */
 130 #if CONFIG_SYS_FSL_SEC_COMPAT == 2 /* SEC 2.x/3.x */
 131 void fdt_fixup_crypto_node(void *blob, int sec_rev)
 132 {
 133         const struct sec_rev_prop {
 134                 u32 sec_rev;
 135                 u32 num_channels;
 136                 u32 channel_fifo_len;
 137                 u32 exec_units_mask;
 138                 u32 descriptor_types_mask;
 139         } sec_rev_prop_list [] = {
 140                 { 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
 141                 { 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
 142                 { 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
 143                 { 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
 144                 { 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
 145                 { 0x0301, 4, 24, 0xbfe, 0x03ab0ebf }, /* SEC 3.1 */
 146                 { 0x0303, 4, 24, 0x97c, 0x03a30abf }, /* SEC 3.3 */
 147         };
 148         char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
 149                             sizeof("fsl,secX.Y")];
 150         int crypto_node, sec_idx, err;
 151         char *p;
 152         u32 val;
 153
 154         /* locate crypto node based on lowest common compatible */
 155         crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
 156         if (crypto_node == -FDT_ERR_NOTFOUND)
 157                 return;
 158
 159         /* delete it if not on an E-processor */
 160         if (crypto_node > 0 && !sec_rev) {
 161                 fdt_del_node(blob, crypto_node);
 162                 return;
 163         }
 164
 165         /* else we got called for possible uprev */
 166         for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
 167                 if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
 168                         break;
 169
 170         if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
 171                 puts("warning: unknown SEC revision number\n");
 172                 return;
 173         }
 174
 175         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels);
 176         err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4);
 177         if (err < 0)
 178                 printf("WARNING: could not set crypto property: %s\n",
 179                        fdt_strerror(err));
 180
 181         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask);
 182         err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &val, 4);
 183         if (err < 0)
 184                 printf("WARNING: could not set crypto property: %s\n",
 185                        fdt_strerror(err));
 186
 187         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask);
 188         err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4);
 189         if (err < 0)
 190                 printf("WARNING: could not set crypto property: %s\n",
 191                        fdt_strerror(err));
 192
 193         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len);
 194         err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4);
 195         if (err < 0)
 196                 printf("WARNING: could not set crypto property: %s\n",
 197                        fdt_strerror(err));
 198
 199         val = 0;
 200         while (sec_idx >= 0) {
 201                 p = compat_strlist + val;
 202                 val += sprintf(p, "fsl,sec%d.%d",
 203                         (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
 204                         sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
 205                 sec_idx--;
 206         }
 207         err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val);
 208         if (err < 0)
 209                 printf("WARNING: could not set crypto property: %s\n",
 210                        fdt_strerror(err));
 211 }
 212 #elif CONFIG_SYS_FSL_SEC_COMPAT >= 4  /* SEC4 */
 213 void fdt_fixup_crypto_node(void *blob, int sec_rev)
 214 {
 215         if (!sec_rev)
 216                 fdt_del_node_and_alias(blob, "crypto");
 217 }
 218 #endif
 219
 220 int fdt_fixup_phy_connection(void *blob, int offset, enum fsl_phy_enet_if phyc)
 221 {
 222         static const char *fsl_phy_enet_if_str[] = {
 223                 [MII]           = "mii",
 224                 [RMII]          = "rmii",
 225                 [GMII]          = "gmii",
 226                 [RGMII]         = "rgmii",
 227                 [RGMII_ID]      = "rgmii-id",
 228                 [RGMII_RXID]    = "rgmii-rxid",
 229                 [SGMII]         = "sgmii",
 230                 [TBI]           = "tbi",
 231                 [RTBI]          = "rtbi",
 232                 [XAUI]          = "xgmii",
 233                 [FSL_ETH_IF_NONE] = "",
 234         };
 235
 236         if (phyc > ARRAY_SIZE(fsl_phy_enet_if_str))
 237                 return fdt_setprop_string(blob, offset, "phy-connection-type", "");
 238
 239         return fdt_setprop_string(blob, offset, "phy-connection-type",
 240                                          fsl_phy_enet_if_str[phyc]);
 241 }