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1 /*-
2  * Copyright (c) 2000 Benno Rice <benno@jeamland.net>
3  * Copyright (c) 2000 Stephane Potvin <sepotvin@videotron.ca>
4  * Copyright (c) 2007-2008 Semihalf, Rafal Jaworowski <raj@semihalf.com>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31
32 #include <stand.h>
33
34 #include "api_public.h"
35 #include "bootstrap.h"
36 #include "glue.h"
37 #include "libuboot.h"
38
39 struct uboot_devdesc currdev;
40 struct arch_switch archsw;              /* MI/MD interface boundary */
41 int devs_no;
42
43 extern char end[];
44 extern char bootprog_name[];
45 extern char bootprog_rev[];
46 extern char bootprog_date[];
47 extern char bootprog_maker[];
48
49 extern unsigned char _etext[];
50 extern unsigned char _edata[];
51 extern unsigned char __bss_start[];
52 extern unsigned char __sbss_start[];
53 extern unsigned char __sbss_end[];
54 extern unsigned char _end[];
55
56 #ifdef LOADER_FDT_SUPPORT
57 extern int command_fdt_internal(int argc, char *argv[]);
58 #endif
59
60 static void
61 dump_sig(struct api_signature *sig)
62 {
63 #ifdef DEBUG
64         printf("signature:\n");
65         printf("  version\t= %d\n", sig->version);
66         printf("  checksum\t= 0x%08x\n", sig->checksum);
67         printf("  sc entry\t= 0x%08x\n", sig->syscall);
68 #endif
69 }
70
71 static void
72 dump_addr_info(void)
73 {
74 #ifdef DEBUG
75         printf("\naddresses info:\n");
76         printf(" _etext (sdata) = 0x%08x\n", (uint32_t)_etext);
77         printf(" _edata         = 0x%08x\n", (uint32_t)_edata);
78         printf(" __sbss_start   = 0x%08x\n", (uint32_t)__sbss_start);
79         printf(" __sbss_end     = 0x%08x\n", (uint32_t)__sbss_end);
80         printf(" __sbss_start   = 0x%08x\n", (uint32_t)__bss_start);
81         printf(" _end           = 0x%08x\n", (uint32_t)_end);
82         printf(" syscall entry  = 0x%08x\n", (uint32_t)syscall_ptr);
83 #endif
84 }
85
86 static uint64_t
87 memsize(struct sys_info *si, int flags)
88 {
89         uint64_t size;
90         int i;
91
92         size = 0;
93         for (i = 0; i < si->mr_no; i++)
94                 if (si->mr[i].flags == flags && si->mr[i].size)
95                         size += (si->mr[i].size);
96
97         return (size);
98 }
99
100 static void
101 meminfo(void)
102 {
103         uint64_t size;
104         struct sys_info *si;
105         int t[3] = { MR_ATTR_DRAM, MR_ATTR_FLASH, MR_ATTR_SRAM };
106         int i;
107
108         if ((si = ub_get_sys_info()) == NULL)
109                 panic("could not retrieve system info");
110
111         for (i = 0; i < 3; i++) {
112                 size = memsize(si, t[i]);
113                 if (size > 0)
114                         printf("%s:\t %lldMB\n", ub_mem_type(t[i]),
115                             size / 1024 / 1024);
116         }
117 }
118
119 int
120 main(void)
121 {
122         struct api_signature *sig = NULL;
123         int i;
124         struct open_file f;
125
126         if (!api_search_sig(&sig))
127                 return (-1);
128
129         syscall_ptr = sig->syscall;
130         if (syscall_ptr == NULL)
131                 return (-2);
132
133         if (sig->version > API_SIG_VERSION)
134                 return (-3);
135
136         /* Clear BSS sections */
137         bzero(__sbss_start, __sbss_end - __sbss_start);
138         bzero(__bss_start, _end - __bss_start);
139
140         /*
141          * Set up console.
142          */
143         cons_probe();
144
145         printf("Compatible API signature found @%x\n", (uint32_t)sig);
146
147         dump_sig(sig);
148         dump_addr_info();
149
150         /*
151          * Initialise the heap as early as possible.  Once this is done,
152          * alloc() is usable. The stack is buried inside us, so this is
153          * safe.
154          */
155         setheap((void *)end, (void *)(end + 512 * 1024));
156
157         /*
158          * Enumerate U-Boot devices
159          */
160         if ((devs_no = ub_dev_enum()) == 0)
161                 panic("no U-Boot devices found");
162         printf("Number of U-Boot devices: %d\n", devs_no);
163
164         printf("\n");
165         printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
166         printf("(%s, %s)\n", bootprog_maker, bootprog_date);
167         meminfo();
168
169         /*
170          * March through the device switch probing for things.
171          */
172         for (i = 0; devsw[i] != NULL; i++) {
173
174                 if (devsw[i]->dv_init == NULL)
175                         continue;
176                 if ((devsw[i]->dv_init)() != 0)
177                         continue;
178
179                 printf("\nDevice: %s\n", devsw[i]->dv_name);
180
181                 currdev.d_dev = devsw[i];
182                 currdev.d_type = currdev.d_dev->dv_type;
183                 currdev.d_unit = 0;
184
185                 if (strncmp(devsw[i]->dv_name, "disk",
186                     strlen(devsw[i]->dv_name)) == 0) {
187                         f.f_devdata = &currdev;
188                         currdev.d_disk.slice = 0;
189                         if (devsw[i]->dv_open(&f,&currdev) == 0)
190                                 break;
191                 }
192
193                 if (strncmp(devsw[i]->dv_name, "net",
194                     strlen(devsw[i]->dv_name)) == 0)
195                         break;
196         }
197
198         if (devsw[i] == NULL)
199                 panic("No boot device found!");
200
201         env_setenv("currdev", EV_VOLATILE, uboot_fmtdev(&currdev),
202             uboot_setcurrdev, env_nounset);
203         env_setenv("loaddev", EV_VOLATILE, uboot_fmtdev(&currdev),
204             env_noset, env_nounset);
205
206         setenv("LINES", "24", 1);               /* optional */
207         setenv("prompt", "loader>", 1);
208
209         archsw.arch_getdev = uboot_getdev;
210         archsw.arch_copyin = uboot_copyin;
211         archsw.arch_copyout = uboot_copyout;
212         archsw.arch_readin = uboot_readin;
213         archsw.arch_autoload = uboot_autoload;
214
215         interact();                             /* doesn't return */
216
217         return (0);
218 }
219
220
221 COMMAND_SET(heap, "heap", "show heap usage", command_heap);
222 static int
223 command_heap(int argc, char *argv[])
224 {
225
226         printf("heap base at %p, top at %p, used %d\n", end, sbrk(0),
227             sbrk(0) - end);
228
229         return (CMD_OK);
230 }
231
232 COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);
233 static int
234 command_reboot(int argc, char *argv[])
235 {
236
237         printf("Resetting...\n");
238         ub_reset();
239
240         printf("Reset failed!\n");
241         while(1);
242 }
243
244 COMMAND_SET(devinfo, "devinfo", "show U-Boot devices", command_devinfo);
245 static int
246 command_devinfo(int argc, char *argv[])
247 {
248         int i;
249
250         if ((devs_no = ub_dev_enum()) == 0) {
251                 command_errmsg = "no U-Boot devices found!?";
252                 return (CMD_ERROR);
253         }
254         
255         printf("U-Boot devices:\n");
256         for (i = 0; i < devs_no; i++) {
257                 ub_dump_di(i);
258                 printf("\n");
259         }
260         return (CMD_OK);
261 }
262
263 COMMAND_SET(sysinfo, "sysinfo", "show U-Boot system info", command_sysinfo);
264 static int
265 command_sysinfo(int argc, char *argv[])
266 {
267         struct sys_info *si;
268
269         if ((si = ub_get_sys_info()) == NULL) {
270                 command_errmsg = "could not retrieve U-Boot sys info!?";
271                 return (CMD_ERROR);
272         }
273
274         printf("U-Boot system info:\n");
275         ub_dump_si(si);
276         return (CMD_OK);
277 }
278
279 #ifdef LOADER_FDT_SUPPORT
280 /*
281  * Since proper fdt command handling function is defined in fdt_loader_cmd.c,
282  * and declaring it as extern is in contradiction with COMMAND_SET() macro
283  * (which uses static pointer), we're defining wrapper function, which
284  * calls the proper fdt handling routine.
285  */
286 static int
287 command_fdt(int argc, char *argv[])
288 {
289
290         return (command_fdt_internal(argc, argv));
291 }
292
293 COMMAND_SET(fdt, "fdt", "flattened device tree handling", command_fdt);
294 #endif