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1 /*
2  * Copyright 2009-2014 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  * SPDX-License-Identifier:     GPL-2.0+
8  */
9
10 #include <common.h>
11 #include <libfdt.h>
12 #include <fdt_support.h>
13 #include <asm/mp.h>
14 #include <asm/fsl_serdes.h>
15 #include <phy.h>
16 #include <hwconfig.h>
17
18 #ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
19 #define CONFIG_USB_MAX_CONTROLLER_COUNT 1
20 #endif
21
22 #if defined(CONFIG_MP) && (defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx))
23 static int ft_del_cpuhandle(void *blob, int cpuhandle)
24 {
25         int off, ret = -FDT_ERR_NOTFOUND;
26
27         /* if we find a match, we'll delete at it which point the offsets are
28          * invalid so we start over from the beginning
29          */
30         off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle",
31                                                 &cpuhandle, 4);
32         while (off != -FDT_ERR_NOTFOUND) {
33                 fdt_delprop(blob, off, "cpu-handle");
34                 ret = 1;
35                 off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle",
36                                 &cpuhandle, 4);
37         }
38
39         return ret;
40 }
41
42 void ft_fixup_num_cores(void *blob) {
43         int off, num_cores, del_cores;
44
45         del_cores = 0;
46         num_cores = cpu_numcores();
47
48         off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
49         while (off != -FDT_ERR_NOTFOUND) {
50                 u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0);
51                 u32 phys_cpu_id = thread_to_core(*reg);
52
53                 if (!is_core_valid(phys_cpu_id) || is_core_disabled(phys_cpu_id)) {
54                         int ph = fdt_get_phandle(blob, off);
55
56                         /* Delete the cpu node once there are no cpu handles */
57                         if (-FDT_ERR_NOTFOUND == ft_del_cpuhandle(blob, ph)) {
58                                 fdt_del_node(blob, off);
59                                 del_cores++;
60                         }
61                         /* either we deleted some cpu handles or the cpu node
62                          * so we reset the offset back to the start since we
63                          * can't trust the offsets anymore
64                          */
65                         off = -1;
66                 }
67                 off = fdt_node_offset_by_prop_value(blob, off,
68                                 "device_type", "cpu", 4);
69         }
70         debug ("%x core system found\n", num_cores);
71         debug ("deleted %d extra core entry entries from device tree\n",
72                                                                 del_cores);
73 }
74 #endif /* defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) */
75
76 /*
77  * update crypto node properties to a specified revision of the SEC
78  * called with sec_rev == 0 if not on an E processor
79  */
80 #if CONFIG_SYS_FSL_SEC_COMPAT == 2 /* SEC 2.x/3.x */
81 void fdt_fixup_crypto_node(void *blob, int sec_rev)
82 {
83         static const struct sec_rev_prop {
84                 u32 sec_rev;
85                 u32 num_channels;
86                 u32 channel_fifo_len;
87                 u32 exec_units_mask;
88                 u32 descriptor_types_mask;
89         } sec_rev_prop_list [] = {
90                 { 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
91                 { 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
92                 { 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
93                 { 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
94                 { 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
95                 { 0x0301, 4, 24, 0xbfe, 0x03ab0ebf }, /* SEC 3.1 */
96                 { 0x0303, 4, 24, 0x97c, 0x03a30abf }, /* SEC 3.3 */
97         };
98         static char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
99                                    sizeof("fsl,secX.Y")];
100         int crypto_node, sec_idx, err;
101         char *p;
102         u32 val;
103
104         /* locate crypto node based on lowest common compatible */
105         crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
106         if (crypto_node == -FDT_ERR_NOTFOUND)
107                 return;
108
109         /* delete it if not on an E-processor */
110         if (crypto_node > 0 && !sec_rev) {
111                 fdt_del_node(blob, crypto_node);
112                 return;
113         }
114
115         /* else we got called for possible uprev */
116         for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
117                 if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
118                         break;
119
120         if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
121                 puts("warning: unknown SEC revision number\n");
122                 return;
123         }
124
125         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels);
126         err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4);
127         if (err < 0)
128                 printf("WARNING: could not set crypto property: %s\n",
129                        fdt_strerror(err));
130
131         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask);
132         err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &val, 4);
133         if (err < 0)
134                 printf("WARNING: could not set crypto property: %s\n",
135                        fdt_strerror(err));
136
137         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask);
138         err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4);
139         if (err < 0)
140                 printf("WARNING: could not set crypto property: %s\n",
141                        fdt_strerror(err));
142
143         val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len);
144         err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4);
145         if (err < 0)
146                 printf("WARNING: could not set crypto property: %s\n",
147                        fdt_strerror(err));
148
149         val = 0;
150         while (sec_idx >= 0) {
151                 p = compat_strlist + val;
152                 val += sprintf(p, "fsl,sec%d.%d",
153                         (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
154                         sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
155                 sec_idx--;
156         }
157         err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val);
158         if (err < 0)
159                 printf("WARNING: could not set crypto property: %s\n",
160                        fdt_strerror(err));
161 }
162 #elif CONFIG_SYS_FSL_SEC_COMPAT >= 4  /* SEC4 */
163 static u8 caam_get_era(void)
164 {
165         static const struct {
166                 u16 ip_id;
167                 u8 maj_rev;
168                 u8 era;
169         } caam_eras[] = {
170                 {0x0A10, 1, 1},
171                 {0x0A10, 2, 2},
172                 {0x0A12, 1, 3},
173                 {0x0A14, 1, 3},
174                 {0x0A14, 2, 4},
175                 {0x0A16, 1, 4},
176                 {0x0A10, 3, 4},
177                 {0x0A11, 1, 4},
178                 {0x0A18, 1, 4},
179                 {0x0A11, 2, 5},
180                 {0x0A12, 2, 5},
181                 {0x0A13, 1, 5},
182                 {0x0A1C, 1, 5}
183         };
184
185         ccsr_sec_t __iomem *sec = (void __iomem *)CONFIG_SYS_FSL_SEC_ADDR;
186         u32 secvid_ms = sec_in32(&sec->secvid_ms);
187         u32 ccbvid = sec_in32(&sec->ccbvid);
188         u16 ip_id = (secvid_ms & SEC_SECVID_MS_IPID_MASK) >>
189                                 SEC_SECVID_MS_IPID_SHIFT;
190         u8 maj_rev = (secvid_ms & SEC_SECVID_MS_MAJ_REV_MASK) >>
191                                 SEC_SECVID_MS_MAJ_REV_SHIFT;
192         u8 era = (ccbvid & SEC_CCBVID_ERA_MASK) >> SEC_CCBVID_ERA_SHIFT;
193
194         int i;
195
196         if (era)        /* This is '0' prior to CAAM ERA-6 */
197                 return era;
198
199         for (i = 0; i < ARRAY_SIZE(caam_eras); i++)
200                 if (caam_eras[i].ip_id == ip_id &&
201                     caam_eras[i].maj_rev == maj_rev)
202                         return caam_eras[i].era;
203
204         return 0;
205 }
206
207 static void fdt_fixup_crypto_era(void *blob, u32 era)
208 {
209         int err;
210         int crypto_node;
211
212         crypto_node = fdt_path_offset(blob, "crypto");
213         if (crypto_node < 0) {
214                 printf("WARNING: Missing crypto node\n");
215                 return;
216         }
217
218         err = fdt_setprop(blob, crypto_node, "fsl,sec-era", &era,
219                           sizeof(era));
220         if (err < 0) {
221                 printf("ERROR: could not set fsl,sec-era property: %s\n",
222                        fdt_strerror(err));
223         }
224 }
225
226 void fdt_fixup_crypto_node(void *blob, int sec_rev)
227 {
228         u8 era;
229
230         if (!sec_rev) {
231                 fdt_del_node_and_alias(blob, "crypto");
232                 return;
233         }
234
235         /* Add SEC ERA information in compatible */
236         era = caam_get_era();
237         if (era) {
238                 fdt_fixup_crypto_era(blob, era);
239         } else {
240                 printf("WARNING: Unable to get ERA for CAAM rev: %d\n",
241                         sec_rev);
242         }
243 }
244 #endif
245
246 int fdt_fixup_phy_connection(void *blob, int offset, phy_interface_t phyc)
247 {
248         return fdt_setprop_string(blob, offset, "phy-connection-type",
249                                          phy_string_for_interface(phyc));
250 }
251
252 #ifdef CONFIG_SYS_SRIO
253 static inline void ft_disable_srio_port(void *blob, int srio_off, int port)
254 {
255         int off = fdt_node_offset_by_prop_value(blob, srio_off,
256                         "cell-index", &port, 4);
257         if (off >= 0) {
258                 off = fdt_setprop_string(blob, off, "status", "disabled");
259                 if (off > 0)
260                         printf("WARNING unable to set status for fsl,srio "
261                                 "port %d: %s\n", port, fdt_strerror(off));
262         }
263 }
264
265 static inline void ft_disable_rman(void *blob)
266 {
267         int off = fdt_node_offset_by_compatible(blob, -1, "fsl,rman");
268         if (off >= 0) {
269                 off = fdt_setprop_string(blob, off, "status", "disabled");
270                 if (off > 0)
271                         printf("WARNING unable to set status for fsl,rman %s\n",
272                                 fdt_strerror(off));
273         }
274 }
275
276 static inline void ft_disable_rmu(void *blob)
277 {
278         int off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio-rmu");
279         if (off >= 0) {
280                 off = fdt_setprop_string(blob, off, "status", "disabled");
281                 if (off > 0)
282                         printf("WARNING unable to set status for "
283                                 "fsl,srio-rmu %s\n", fdt_strerror(off));
284         }
285 }
286
287 void ft_srio_setup(void *blob)
288 {
289         int srio1_used = 0, srio2_used = 0;
290         int srio_off;
291
292         /* search for srio node, if doesn't exist just return - nothing todo */
293         srio_off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio");
294         if (srio_off < 0)
295                 return ;
296
297 #ifdef CONFIG_SRIO1
298         if (is_serdes_configured(SRIO1))
299                 srio1_used = 1;
300 #endif
301 #ifdef CONFIG_SRIO2
302         if (is_serdes_configured(SRIO2))
303                 srio2_used = 1;
304 #endif
305
306         /* mark port1 disabled */
307         if (!srio1_used)
308                 ft_disable_srio_port(blob, srio_off, 1);
309
310         /* mark port2 disabled */
311         if (!srio2_used)
312                 ft_disable_srio_port(blob, srio_off, 2);
313
314         /* if both ports not used, disable controller, rmu and rman */
315         if (!srio1_used && !srio2_used) {
316                 fdt_setprop_string(blob, srio_off, "status", "disabled");
317
318                 ft_disable_rman(blob);
319                 ft_disable_rmu(blob);
320         }
321 }
322 #endif