main.c revision 256281
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: stable/10/sys/boot/uboot/common/main.c 240276 2012-09-09 11:37:17Z ae $"); 31 32#include <stand.h> 33 34#include "api_public.h" 35#include "bootstrap.h" 36#include "glue.h" 37#include "libuboot.h" 38 39struct uboot_devdesc currdev; 40struct arch_switch archsw; /* MI/MD interface boundary */ 41int devs_no; 42 43extern char end[]; 44extern char bootprog_name[]; 45extern char bootprog_rev[]; 46extern char bootprog_date[]; 47extern char bootprog_maker[]; 48 49extern unsigned char _etext[]; 50extern unsigned char _edata[]; 51extern unsigned char __bss_start[]; 52extern unsigned char __sbss_start[]; 53extern unsigned char __sbss_end[]; 54extern unsigned char _end[]; 55 56#ifdef LOADER_FDT_SUPPORT 57extern int command_fdt_internal(int argc, char *argv[]); 58#endif 59 60static void 61dump_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 71static void 72dump_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 86static uint64_t 87memsize(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 100static void 101meminfo(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 119int 120main(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 221COMMAND_SET(heap, "heap", "show heap usage", command_heap); 222static int 223command_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 232COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot); 233static int 234command_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 244COMMAND_SET(devinfo, "devinfo", "show U-Boot devices", command_devinfo); 245static int 246command_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 263COMMAND_SET(sysinfo, "sysinfo", "show U-Boot system info", command_sysinfo); 264static int 265command_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 */ 286static int 287command_fdt(int argc, char *argv[]) 288{ 289 290 return (command_fdt_internal(argc, argv)); 291} 292 293COMMAND_SET(fdt, "fdt", "flattened device tree handling", command_fdt); 294#endif 295