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1 /*
2  * (C) Copyright 2007
3  * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com.
4  *
5  * SPDX-License-Identifier:     GPL-2.0+
6  */
7
8 /*
9  * AMBA Plug&Play information list command
10  *
11  */
12 #include <common.h>
13 #include <command.h>
14 #include <ambapp.h>
15
16 DECLARE_GLOBAL_DATA_PTR;
17
18 /* We put these variables into .data section so that they are zero
19  * when entering the AMBA Plug & Play routines (in cpu/cpu/ambapp.c)
20  * the first time. BSS is not garantueed to be zero since BSS
21  * hasn't been cleared the first times entering the CPU AMBA functions.
22  *
23  * The AMBA PnP routines call these functions if ambapp_???_print is set.
24  *
25  */
26 int ambapp_apb_print __attribute__ ((section(".data"))) = 0;
27 int ambapp_ahb_print __attribute__ ((section(".data"))) = 0;
28
29 typedef struct {
30         int device_id;
31         char *name;
32 } ambapp_device_name;
33
34 static ambapp_device_name gaisler_devices[] = {
35         {GAISLER_LEON3, "GAISLER_LEON3"},
36         {GAISLER_LEON3DSU, "GAISLER_LEON3DSU"},
37         {GAISLER_ETHAHB, "GAISLER_ETHAHB"},
38         {GAISLER_ETHMAC, "GAISLER_ETHMAC"},
39         {GAISLER_APBMST, "GAISLER_APBMST"},
40         {GAISLER_AHBUART, "GAISLER_AHBUART"},
41         {GAISLER_SRCTRL, "GAISLER_SRCTRL"},
42         {GAISLER_SDCTRL, "GAISLER_SDCTRL"},
43         {GAISLER_APBUART, "GAISLER_APBUART"},
44         {GAISLER_IRQMP, "GAISLER_IRQMP"},
45         {GAISLER_AHBRAM, "GAISLER_AHBRAM"},
46         {GAISLER_GPTIMER, "GAISLER_GPTIMER"},
47         {GAISLER_PCITRG, "GAISLER_PCITRG"},
48         {GAISLER_PCISBRG, "GAISLER_PCISBRG"},
49         {GAISLER_PCIFBRG, "GAISLER_PCIFBRG"},
50         {GAISLER_PCITRACE, "GAISLER_PCITRACE"},
51         {GAISLER_AHBTRACE, "GAISLER_AHBTRACE"},
52         {GAISLER_ETHDSU, "GAISLER_ETHDSU"},
53         {GAISLER_PIOPORT, "GAISLER_PIOPORT"},
54         {GAISLER_AHBJTAG, "GAISLER_AHBJTAG"},
55         {GAISLER_ATACTRL, "GAISLER_ATACTRL"},
56         {GAISLER_VGA, "GAISLER_VGA"},
57         {GAISLER_KBD, "GAISLER_KBD"},
58         {GAISLER_L2TIME, "GAISLER_L2TIME"},
59         {GAISLER_L2C, "GAISLER_L2C"},
60         {GAISLER_PLUGPLAY, "GAISLER_PLUGPLAY"},
61         {GAISLER_SPW, "GAISLER_SPW"},
62         {GAISLER_SPW2, "GAISLER_SPW2"},
63         {GAISLER_EHCI, "GAISLER_EHCI"},
64         {GAISLER_UHCI, "GAISLER_UHCI"},
65         {GAISLER_AHBSTAT, "GAISLER_AHBSTAT"},
66         {GAISLER_DDR2SPA, "GAISLER_DDR2SPA"},
67         {GAISLER_DDRSPA, "GAISLER_DDRSPA"},
68         {0, NULL}
69 };
70
71 static ambapp_device_name esa_devices[] = {
72         {ESA_LEON2, "ESA_LEON2"},
73         {ESA_MCTRL, "ESA_MCTRL"},
74         {0, NULL}
75 };
76
77 static ambapp_device_name opencores_devices[] = {
78         {OPENCORES_PCIBR, "OPENCORES_PCIBR"},
79         {OPENCORES_ETHMAC, "OPENCORES_ETHMAC"},
80         {0, NULL}
81 };
82
83 typedef struct {
84         unsigned int vendor_id;
85         char *name;
86         ambapp_device_name *devices;
87 } ambapp_vendor_devnames;
88
89 static ambapp_vendor_devnames vendors[] = {
90         {VENDOR_GAISLER, "VENDOR_GAISLER", gaisler_devices},
91         {VENDOR_ESA, "VENDOR_ESA", esa_devices},
92         {VENDOR_OPENCORES, "VENDOR_OPENCORES", opencores_devices},
93         {0, NULL, 0}
94 };
95
96 static char *ambapp_get_devname(ambapp_device_name * devs, int id)
97 {
98         if (!devs)
99                 return NULL;
100
101         while (devs->device_id > 0) {
102                 if (devs->device_id == id)
103                         return devs->name;
104                 devs++;
105         }
106         return NULL;
107 }
108
109 char *ambapp_device_id2str(int vendor, int id)
110 {
111         ambapp_vendor_devnames *ven = &vendors[0];
112
113         while (ven->vendor_id > 0) {
114                 if (ven->vendor_id == vendor) {
115                         return ambapp_get_devname(ven->devices, id);
116                 }
117                 ven++;
118         }
119         return NULL;
120 }
121
122 char *ambapp_vendor_id2str(int vendor)
123 {
124         ambapp_vendor_devnames *ven = &vendors[0];
125
126         while (ven->vendor_id > 0) {
127                 if (ven->vendor_id == vendor) {
128                         return ven->name;
129                 }
130                 ven++;
131         }
132         return NULL;
133 }
134
135 static char *unknown = "unknown";
136
137 /* Print one APB device */
138 void ambapp_print_apb(apbctrl_pp_dev * apb, ambapp_ahbdev * apbmst, int index)
139 {
140         char *dev_str, *ven_str;
141         int irq, ver, vendor, deviceid;
142         unsigned int address, apbmst_base, mask;
143
144         vendor = amba_vendor(apb->conf);
145         deviceid = amba_device(apb->conf);
146         irq = amba_irq(apb->conf);
147         ver = amba_ver(apb->conf);
148         apbmst_base = apbmst->address[0] & LEON3_IO_AREA;
149         address = (apbmst_base | (((apb->bar & 0xfff00000) >> 12))) &
150             (((apb->bar & 0x0000fff0) << 4) | 0xfff00000);
151
152         mask = amba_membar_mask(apb->bar) << 8;
153         mask = ((~mask) & 0x000fffff) + 1;
154
155         ven_str = ambapp_vendor_id2str(vendor);
156         if (!ven_str) {
157                 ven_str = unknown;
158                 dev_str = unknown;
159         } else {
160                 dev_str = ambapp_device_id2str(vendor, deviceid);
161                 if (!dev_str)
162                         dev_str = unknown;
163         }
164
165         printf("0x%02x:0x%02x:0x%02x: %s  %s\n"
166                "   apb: 0x%08x - 0x%08x\n"
167                "   irq: %-2d (ver: %-2d)\n",
168                index, vendor, deviceid, ven_str, dev_str, address,
169                address + mask, irq, ver);
170 }
171
172 void ambapp_print_ahb(ahbctrl_pp_dev * ahb, int index)
173 {
174         char *dev_str, *ven_str;
175         int irq, ver, vendor, deviceid;
176         unsigned int addr, mask;
177         int j;
178
179         vendor = amba_vendor(ahb->conf);
180         deviceid = amba_device(ahb->conf);
181         irq = amba_irq(ahb->conf);
182         ver = amba_ver(ahb->conf);
183
184         ven_str = ambapp_vendor_id2str(vendor);
185         if (!ven_str) {
186                 ven_str = unknown;
187                 dev_str = unknown;
188         } else {
189                 dev_str = ambapp_device_id2str(vendor, deviceid);
190                 if (!dev_str)
191                         dev_str = unknown;
192         }
193
194         printf("0x%02x:0x%02x:0x%02x: %s  %s\n",
195                index, vendor, deviceid, ven_str, dev_str);
196
197         for (j = 0; j < 4; j++) {
198                 addr = amba_membar_start(ahb->bars[j]);
199                 if (amba_membar_type(ahb->bars[j]) == 0)
200                         continue;
201                 if (amba_membar_type(ahb->bars[j]) == AMBA_TYPE_AHBIO)
202                         addr = AMBA_TYPE_AHBIO_ADDR(addr);
203                 mask = amba_membar_mask(ahb->bars[j]) << 20;
204                 printf("   mem: 0x%08x - 0x%08x\n", addr, addr + ((~mask) + 1));
205         }
206
207         printf("   irq: %-2d (ver: %d)\n", irq, ver);
208 }
209
210 int do_ambapp_print(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
211 {
212
213         /* Print AHB Masters */
214         puts("--------- AHB Masters ---------\n");
215         ambapp_apb_print = 0;
216         ambapp_ahb_print = 1;
217         ambapp_ahbmst_count(99, 99);    /* Get vendor&device 99 = nonexistent... */
218
219         /* Print AHB Slaves */
220         puts("--------- AHB Slaves  ---------\n");
221         ambapp_ahbslv_count(99, 99);    /* Get vendor&device 99 = nonexistent... */
222
223         /* Print APB Slaves */
224         puts("--------- APB Slaves  ---------\n");
225         ambapp_apb_print = 1;
226         ambapp_ahb_print = 0;
227         ambapp_apb_count(99, 99);       /* Get vendor&device 99 = nonexistent... */
228
229         /* Reset, no futher printing */
230         ambapp_apb_print = 0;
231         ambapp_ahb_print = 0;
232         puts("\n");
233         return 0;
234 }
235
236 int ambapp_init_reloc(void)
237 {
238         ambapp_vendor_devnames *vend = vendors;
239         ambapp_device_name *dev;
240
241         while (vend->vendor_id && vend->name) {
242                 vend->name = (char *)((unsigned int)vend->name + gd->reloc_off);
243                 vend->devices =
244                     (ambapp_device_name *) ((unsigned int)vend->devices +
245                                             gd->reloc_off);;
246                 dev = vend->devices;
247                 vend++;
248                 if (!dev)
249                         continue;
250                 while (dev->device_id && dev->name) {
251                         dev->name =
252                             (char *)((unsigned int)dev->name + gd->reloc_off);;
253                         dev++;
254                 }
255         }
256         return 0;
257 }
258
259 U_BOOT_CMD(
260         ambapp, 1, 1, do_ambapp_print,
261         "list AMBA Plug&Play information",
262         "ambapp\n"
263         "    - lists AMBA (AHB & APB) Plug&Play devices present on the system"
264 );