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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                 u32 phys_cpu_id = thread_to_core(*reg);
66
67                 if (!is_core_valid(phys_cpu_id) || is_core_disabled(phys_cpu_id)) {
68                         int ph = fdt_get_phandle(blob, off);
69
70                         /* Delete the cpu node once there are no cpu handles */
71                         if (-FDT_ERR_NOTFOUND == ft_del_cpuhandle(blob, ph)) {
72                                 fdt_del_node(blob, off);
73                                 del_cores++;
74                         }
75                         /* either we deleted some cpu handles or the cpu node
76                          * so we reset the offset back to the start since we
77                          * can't trust the offsets anymore
78                          */
79                         off = -1;
80                 }
81                 off = fdt_node_offset_by_prop_value(blob, off,
82                                 "device_type", "cpu", 4);
83         }
84         debug ("%x core system found\n", num_cores);
85         debug ("deleted %d extra core entry entries from device tree\n",
86                                                                 del_cores);
87 }
88 #endif /* defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) */
89
90 #if defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB)
91 static int fdt_fixup_usb_mode_phy_type(void *blob, const char *mode,
92                                 const char *phy_type, int start_offset)
93 {
94         const char *compat_dr = "fsl-usb2-dr";
95         const char *compat_mph = "fsl-usb2-mph";
96         const char *prop_mode = "dr_mode";
97         const char *prop_type = "phy_type";
98         const char *node_type = NULL;
99         int node_offset;
100         int err;
101
102         node_offset = fdt_node_offset_by_compatible(blob,
103                         start_offset, compat_mph);
104         if (node_offset < 0) {
105                 node_offset = fdt_node_offset_by_compatible(blob,
106                         start_offset, compat_dr);
107                 if (node_offset < 0) {
108                         printf("WARNING: could not find compatible"
109                                 " node %s or %s: %s.\n", compat_mph,
110                                 compat_dr, fdt_strerror(node_offset));
111                         return -1;
112                 } else
113                         node_type = compat_dr;
114         } else
115                 node_type = compat_mph;
116
117         if (mode) {
118                 err = fdt_setprop(blob, node_offset, prop_mode, mode,
119                                   strlen(mode) + 1);
120                 if (err < 0)
121                         printf("WARNING: could not set %s for %s: %s.\n",
122                                prop_mode, node_type, fdt_strerror(err));
123         }
124
125         if (phy_type) {
126                 err = fdt_setprop(blob, node_offset, prop_type, phy_type,
127                                   strlen(phy_type) + 1);
128                 if (err < 0)
129                         printf("WARNING: could not set %s for %s: %s.\n",
130                                prop_type, node_type, fdt_strerror(err));
131         }
132
133         return node_offset;
134 }
135
136 void fdt_fixup_dr_usb(void *blob, bd_t *bd)
137 {
138         const char *modes[] = { "host", "peripheral", "otg" };
139         const char *phys[] = { "ulpi", "utmi" };
140         const char *mode = NULL;
141         const char *phy_type = NULL;
142         const char *dr_mode_type = NULL;
143         const char *dr_phy_type = NULL;
144         char usb1_defined = 0;
145         int usb_mode_off = -1;
146         int usb_phy_off = -1;
147         char str[5];
148         int i, j;
149
150         for (i = 1; i <= FSL_MAX_NUM_USB_CTRLS; i++) {
151                 int mode_idx = -1, phy_idx = -1;
152                 snprintf(str, 5, "%s%d", "usb", i);
153                 if (hwconfig(str)) {
154                         for (j = 0; j < ARRAY_SIZE(modes); j++) {
155                                 if (hwconfig_subarg_cmp(str, "dr_mode",
156                                                 modes[j])) {
157                                         mode_idx = j;
158                                         break;
159                                 }
160                         }
161
162                         for (j = 0; j < ARRAY_SIZE(phys); j++) {
163                                 if (hwconfig_subarg_cmp(str, "phy_type",
164                                                 phys[j])) {
165                                         phy_idx = j;
166                                         break;
167                                 }
168                         }
169
170                         dr_mode_type = modes[mode_idx];
171                         dr_phy_type = phys[phy_idx];
172
173                         /* use usb_dr_mode and usb_phy_type if
174                            usb1_defined = 0; these variables are to
175                            be deprecated */
176                         if (!strcmp(str, "usb1"))
177                                 usb1_defined = 1;
178
179                         if (mode_idx < 0 && phy_idx < 0) {
180                                 printf("WARNING: invalid phy or mode\n");
181                                 return;
182                         }
183                 }
184
185                 usb_mode_off = fdt_fixup_usb_mode_phy_type(blob,
186                         dr_mode_type, NULL, usb_mode_off);
187
188                 if (usb_mode_off < 0)
189                         return;
190
191                 usb_phy_off = fdt_fixup_usb_mode_phy_type(blob,
192                         NULL, dr_phy_type, usb_phy_off);
193
194                 if (usb_phy_off < 0)
195                         return;
196         }
197
198         if (!usb1_defined) {
199                 int usb_off = -1;
200                 mode = getenv("usb_dr_mode");
201                 phy_type = getenv("usb_phy_type");
202                 if (mode || phy_type) {
203                         printf("WARNING: usb_dr_mode and usb_phy_type "
204                                 "are to be deprecated soon. Use "
205                                 "hwconfig to set these values instead!!\n");
206                         fdt_fixup_usb_mode_phy_type(blob, mode,
207                                 phy_type, usb_off);
208                 }
209         }
210 }
211 #endif /* defined(CONFIG_HAS_FSL_DR_USB) || defined(CONFIG_HAS_FSL_MPH_USB) */
212
213 /*
214  * update crypto node properties to a specified revision of the SEC
215  * called with sec_rev == 0 if not on an E processor
216  */
217 #if CONFIG_SYS_FSL_SEC_COMPAT == 2 /* SEC 2.x/3.x */
218 void fdt_fixup_crypto_node(void *blob, int sec_rev)
219 {
220         static const struct sec_rev_prop {
221                 u32 sec_rev;
222                 u32 num_channels;
223                 u32 channel_fifo_len;
224                 u32 exec_units_mask;
225                 u32 descriptor_types_mask;
226         } sec_rev_prop_list [] = {
227                 { 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
228                 { 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
229                 { 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
230                 { 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
231                 { 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
232                 { 0x0301, 4, 24, 0xbfe, 0x03ab0ebf }, /* SEC 3.1 */
233                 { 0x0303, 4, 24, 0x97c, 0x03a30abf }, /* SEC 3.3 */
234         };
235         static char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
236                                    sizeof("fsl,secX.Y")];
237         int crypto_node, sec_idx, err;
238         char *p;
239         u32 val;
240
241         /* locate crypto node based on lowest common compatible */
242         crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
243         if (crypto_node == -FDT_ERR_NOTFOUND)
244                 return;
245
246         /* delete it if not on an E-processor */
247         if (crypto_node > 0 && !sec_rev) {
248                 fdt_del_node(blob, crypto_node);
249                 return;
250         }
251
252         /* else we got called for possible uprev */
253         for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
254                 if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
255                         break;
256
257         if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
258                 puts("warning: unknown SEC revision number\n");
259                 return;
260         }
261
262         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels);
263         err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4);
264         if (err < 0)
265                 printf("WARNING: could not set crypto property: %s\n",
266                        fdt_strerror(err));
267
268         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask);
269         err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &val, 4);
270         if (err < 0)
271                 printf("WARNING: could not set crypto property: %s\n",
272                        fdt_strerror(err));
273
274         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask);
275         err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4);
276         if (err < 0)
277                 printf("WARNING: could not set crypto property: %s\n",
278                        fdt_strerror(err));
279
280         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len);
281         err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4);
282         if (err < 0)
283                 printf("WARNING: could not set crypto property: %s\n",
284                        fdt_strerror(err));
285
286         val = 0;
287         while (sec_idx >= 0) {
288                 p = compat_strlist + val;
289                 val += sprintf(p, "fsl,sec%d.%d",
290                         (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
291                         sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
292                 sec_idx--;
293         }
294         err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val);
295         if (err < 0)
296                 printf("WARNING: could not set crypto property: %s\n",
297                        fdt_strerror(err));
298 }
299 #elif CONFIG_SYS_FSL_SEC_COMPAT >= 4  /* SEC4 */
300 void fdt_fixup_crypto_node(void *blob, int sec_rev)
301 {
302         if (!sec_rev)
303                 fdt_del_node_and_alias(blob, "crypto");
304 }
305 #endif
306
307 int fdt_fixup_phy_connection(void *blob, int offset, phy_interface_t phyc)
308 {
309         return fdt_setprop_string(blob, offset, "phy-connection-type",
310                                          phy_string_for_interface(phyc));
311 }
312
313 #ifdef CONFIG_SYS_SRIO
314 static inline void ft_disable_srio_port(void *blob, int srio_off, int port)
315 {
316         int off = fdt_node_offset_by_prop_value(blob, srio_off,
317                         "cell-index", &port, 4);
318         if (off >= 0) {
319                 off = fdt_setprop_string(blob, off, "status", "disabled");
320                 if (off > 0)
321                         printf("WARNING unable to set status for fsl,srio "
322                                 "port %d: %s\n", port, fdt_strerror(off));
323         }
324 }
325
326 static inline void ft_disable_rman(void *blob)
327 {
328         int off = fdt_node_offset_by_compatible(blob, -1, "fsl,rman");
329         if (off >= 0) {
330                 off = fdt_setprop_string(blob, off, "status", "disabled");
331                 if (off > 0)
332                         printf("WARNING unable to set status for fsl,rman %s\n",
333                                 fdt_strerror(off));
334         }
335 }
336
337 static inline void ft_disable_rmu(void *blob)
338 {
339         int off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio-rmu");
340         if (off >= 0) {
341                 off = fdt_setprop_string(blob, off, "status", "disabled");
342                 if (off > 0)
343                         printf("WARNING unable to set status for "
344                                 "fsl,srio-rmu %s\n", fdt_strerror(off));
345         }
346 }
347
348 void ft_srio_setup(void *blob)
349 {
350         int srio1_used = 0, srio2_used = 0;
351         int srio_off;
352
353         /* search for srio node, if doesn't exist just return - nothing todo */
354         srio_off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio");
355         if (srio_off < 0)
356                 return ;
357
358 #ifdef CONFIG_SRIO1
359         if (is_serdes_configured(SRIO1))
360                 srio1_used = 1;
361 #endif
362 #ifdef CONFIG_SRIO2
363         if (is_serdes_configured(SRIO2))
364                 srio2_used = 1;
365 #endif
366
367         /* mark port1 disabled */
368         if (!srio1_used)
369                 ft_disable_srio_port(blob, srio_off, 1);
370
371         /* mark port2 disabled */
372         if (!srio2_used)
373                 ft_disable_srio_port(blob, srio_off, 2);
374
375         /* if both ports not used, disable controller, rmu and rman */
376         if (!srio1_used && !srio2_used) {
377                 fdt_setprop_string(blob, srio_off, "status", "disabled");
378
379                 ft_disable_rman(blob);
380                 ft_disable_rmu(blob);
381         }
382 }
383 #endif