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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 (!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                 sprintf(str, "%s%d", "usb", i);
141                 if (hwconfig(str)) {
142                         for (j = 0; j < sizeof(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 < sizeof(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 (phy_idx >= 0)
160                                 usb_phy_off = fdt_fixup_usb_mode_phy_type(blob,
161                                         NULL, phys[phy_idx], usb_phy_off);
162                         if (!strcmp(str, "usb1"))
163                                 usb1_defined = 1;
164                         if (mode_idx < 0 && phy_idx < 0)
165                                 printf("WARNING: invalid phy or mode\n");
166                 }
167         }
168         if (!usb1_defined) {
169                 int usb_off = -1;
170                 mode = getenv("usb_dr_mode");
171                 phy_type = getenv("usb_phy_type");
172                 if (!mode && !phy_type)
173                         return;
174                 fdt_fixup_usb_mode_phy_type(blob, mode, phy_type, usb_off);
175         }
176 }
177 #endif /* CONFIG_HAS_FSL_DR_USB */
178
179 /*
180  * update crypto node properties to a specified revision of the SEC
181  * called with sec_rev == 0 if not on an E processor
182  */
183 #if CONFIG_SYS_FSL_SEC_COMPAT == 2 /* SEC 2.x/3.x */
184 void fdt_fixup_crypto_node(void *blob, int sec_rev)
185 {
186         const struct sec_rev_prop {
187                 u32 sec_rev;
188                 u32 num_channels;
189                 u32 channel_fifo_len;
190                 u32 exec_units_mask;
191                 u32 descriptor_types_mask;
192         } sec_rev_prop_list [] = {
193                 { 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
194                 { 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
195                 { 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
196                 { 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
197                 { 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
198                 { 0x0301, 4, 24, 0xbfe, 0x03ab0ebf }, /* SEC 3.1 */
199                 { 0x0303, 4, 24, 0x97c, 0x03a30abf }, /* SEC 3.3 */
200         };
201         char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
202                             sizeof("fsl,secX.Y")];
203         int crypto_node, sec_idx, err;
204         char *p;
205         u32 val;
206
207         /* locate crypto node based on lowest common compatible */
208         crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
209         if (crypto_node == -FDT_ERR_NOTFOUND)
210                 return;
211
212         /* delete it if not on an E-processor */
213         if (crypto_node > 0 && !sec_rev) {
214                 fdt_del_node(blob, crypto_node);
215                 return;
216         }
217
218         /* else we got called for possible uprev */
219         for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
220                 if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
221                         break;
222
223         if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
224                 puts("warning: unknown SEC revision number\n");
225                 return;
226         }
227
228         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels);
229         err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4);
230         if (err < 0)
231                 printf("WARNING: could not set crypto property: %s\n",
232                        fdt_strerror(err));
233
234         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask);
235         err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &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].exec_units_mask);
241         err = fdt_setprop(blob, crypto_node, "fsl,exec-units-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].channel_fifo_len);
247         err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4);
248         if (err < 0)
249                 printf("WARNING: could not set crypto property: %s\n",
250                        fdt_strerror(err));
251
252         val = 0;
253         while (sec_idx >= 0) {
254                 p = compat_strlist + val;
255                 val += sprintf(p, "fsl,sec%d.%d",
256                         (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
257                         sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
258                 sec_idx--;
259         }
260         err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val);
261         if (err < 0)
262                 printf("WARNING: could not set crypto property: %s\n",
263                        fdt_strerror(err));
264 }
265 #elif CONFIG_SYS_FSL_SEC_COMPAT >= 4  /* SEC4 */
266 void fdt_fixup_crypto_node(void *blob, int sec_rev)
267 {
268         if (!sec_rev)
269                 fdt_del_node_and_alias(blob, "crypto");
270 }
271 #endif
272
273 int fdt_fixup_phy_connection(void *blob, int offset, phy_interface_t phyc)
274 {
275         return fdt_setprop_string(blob, offset, "phy-connection-type",
276                                          phy_string_for_interface(phyc));
277 }
278
279 #ifdef CONFIG_SYS_SRIO
280 static inline void ft_disable_srio_port(void *blob, int srio_off, int port)
281 {
282         int off = fdt_node_offset_by_prop_value(blob, srio_off,
283                         "cell-index", &port, 4);
284         if (off >= 0) {
285                 off = fdt_setprop_string(blob, off, "status", "disabled");
286                 if (off > 0)
287                         printf("WARNING unable to set status for fsl,srio "
288                                 "port %d: %s\n", port, fdt_strerror(off));
289         }
290 }
291
292 static inline void ft_disable_rman(void *blob)
293 {
294         int off = fdt_node_offset_by_compatible(blob, -1, "fsl,rman");
295         if (off >= 0) {
296                 off = fdt_setprop_string(blob, off, "status", "disabled");
297                 if (off > 0)
298                         printf("WARNING unable to set status for fsl,rman %s\n",
299                                 fdt_strerror(off));
300         }
301 }
302
303 static inline void ft_disable_rmu(void *blob)
304 {
305         int off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio-rmu");
306         if (off >= 0) {
307                 off = fdt_setprop_string(blob, off, "status", "disabled");
308                 if (off > 0)
309                         printf("WARNING unable to set status for "
310                                 "fsl,srio-rmu %s\n", fdt_strerror(off));
311         }
312 }
313
314 void ft_srio_setup(void *blob)
315 {
316         int srio1_used = 0, srio2_used = 0;
317         int srio_off;
318
319         /* search for srio node, if doesn't exist just return - nothing todo */
320         srio_off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio");
321         if (srio_off < 0)
322                 return ;
323
324 #ifdef CONFIG_SRIO1
325         if (is_serdes_configured(SRIO1))
326                 srio1_used = 1;
327 #endif
328 #ifdef CONFIG_SRIO2
329         if (is_serdes_configured(SRIO2))
330                 srio2_used = 1;
331 #endif
332
333         /* mark port1 disabled */
334         if (!srio1_used)
335                 ft_disable_srio_port(blob, srio_off, 1);
336
337         /* mark port2 disabled */
338         if (!srio2_used)
339                 ft_disable_srio_port(blob, srio_off, 2);
340
341         /* if both ports not used, disable controller, rmu and rman */
342         if (!srio1_used && !srio2_used) {
343                 fdt_setprop_string(blob, srio_off, "status", "disabled");
344
345                 ft_disable_rman(blob);
346                 ft_disable_rmu(blob);
347         }
348 }
349 #endif