int redboot_exec( char *command, ... ) { int argc; char *argv[ARGV_MAX+1]; va_list ap; struct cmd *cmd; int result = 0; va_start(ap, command); argv[0] = command; for( argc = 1; argc < ARGV_MAX; argc++ ) { char *arg = va_arg(ap, char *); if( arg == 0 ) break; argv[argc] = arg; } argv[argc] = NULL; if(( cmd = cmd_search(__RedBoot_CMD_TAB__, &__RedBoot_CMD_TAB_END__, command) )) { // Try to handle aborts - messy because of the stack unwinding... #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS __mem_fault_handler = error_handler; #endif redboot_exec_call = true; if (hal_setjmp(error_jmpbuf)) result = -1; else (cmd->fun)(argc, argv); redboot_exec_call = false; #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS __mem_fault_handler = 0; #endif } else result = -1; va_end(ap); return result; }
// // This is the main entry point for RedBoot // void cyg_start(void) { int res = 0; bool prompt = true; static char line[CYGPKG_REDBOOT_MAX_CMD_LINE]; char *command; struct cmd *cmd; int cur; struct init_tab_entry *init_entry; extern char RedBoot_version[]; #if CYGBLD_REDBOOT_MAX_MEM_SEGMENTS > 1 int seg; #endif // Export version information CYGACC_CALL_IF_MONITOR_VERSION_SET(RedBoot_version); CYGACC_CALL_IF_MONITOR_RETURN_SET(return_to_redboot); // Make sure the channels are properly initialized. diag_init_putc(_mon_write_char); hal_if_diag_init(); // Force console to output raw text - but remember the old setting // so it can be restored if interaction with a debugger is // required. cur = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT); CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_HAL_VIRTUAL_VECTOR_DEBUG_CHANNEL); #ifdef CYGPKG_REDBOOT_ANY_CONSOLE console_selected = false; #endif console_echo = true; CYGACC_CALL_IF_DELAY_US((cyg_int32)2*100000); ram_start = (unsigned char *)CYGMEM_REGION_ram; ram_end = (unsigned char *)(CYGMEM_REGION_ram+CYGMEM_REGION_ram_SIZE); #ifdef HAL_MEM_REAL_REGION_TOP { unsigned char *ram_end_tmp = ram_end; ram_end = HAL_MEM_REAL_REGION_TOP( ram_end_tmp ); } #endif #ifdef CYGMEM_SECTION_heap1 workspace_start = (unsigned char *)CYGMEM_SECTION_heap1; workspace_end = (unsigned char *)(CYGMEM_SECTION_heap1+CYGMEM_SECTION_heap1_SIZE); #else workspace_start = (unsigned char *)CYGMEM_REGION_ram; workspace_end = (unsigned char *)(CYGMEM_REGION_ram+CYGMEM_REGION_ram_SIZE); #endif if ( ram_end < workspace_end ) { // when *less* SDRAM is installed than the possible maximum, // but the heap1 region remains greater... workspace_end = ram_end; } // Nothing has ever been loaded into memory entry_address = (unsigned long)NO_MEMORY; bist(); #if defined(CYGPRI_REDBOOT_ZLIB_FLASH) && defined(CYGOPT_REDBOOT_FIS_ZLIB_COMMON_BUFFER) fis_zlib_common_buffer = workspace_end -= CYGNUM_REDBOOT_FIS_ZLIB_COMMON_BUFFER_SIZE; #endif #ifdef CYGFUN_REDBOOT_BOOT_SCRIPT script_timeout = CYGNUM_REDBOOT_BOOT_SCRIPT_DEFAULT_TIMEOUT; #endif for (init_entry = __RedBoot_INIT_TAB__; init_entry != &__RedBoot_INIT_TAB_END__; init_entry++) { (*init_entry->fun)(); } mem_segments[0].start = workspace_start; mem_segments[0].end = workspace_end; #if CYGBLD_REDBOOT_MAX_MEM_SEGMENTS > 1 for (seg = 1; seg < CYGBLD_REDBOOT_MAX_MEM_SEGMENTS; seg++) { cyg_plf_memory_segment(seg, &mem_segments[seg].start, &mem_segments[seg].end); } #endif #ifdef CYGSEM_REDBOOT_PLF_STARTUP cyg_plf_redboot_startup(); #endif do_version(0,0); #ifdef CYGFUN_REDBOOT_BOOT_SCRIPT # ifdef CYGDAT_REDBOOT_DEFAULT_BOOT_SCRIPT if (!script) { script = CYGDAT_REDBOOT_DEFAULT_BOOT_SCRIPT; } # endif if (script) { // Give the guy a chance to abort any boot script unsigned char *hold_script = script; int script_timeout_ms = script_timeout * CYGNUM_REDBOOT_BOOT_SCRIPT_TIMEOUT_RESOLUTION; diag_printf("== Executing boot script in %d.%03d seconds - enter ^C to abort\n", script_timeout_ms/1000, script_timeout_ms%1000); script = (unsigned char *)0; res = _GETS_CTRLC; // Treat 0 timeout as ^C while (script_timeout_ms >= CYGNUM_REDBOOT_CLI_IDLE_TIMEOUT) { res = _rb_gets(line, sizeof(line), CYGNUM_REDBOOT_CLI_IDLE_TIMEOUT); if (res >= _GETS_OK) { diag_printf("== Executing boot script in %d.%03d seconds - enter ^C to abort\n", script_timeout_ms/1000, script_timeout_ms%1000); continue; // Ignore anything but ^C } if (res != _GETS_TIMEOUT) break; script_timeout_ms -= CYGNUM_REDBOOT_CLI_IDLE_TIMEOUT; } if (res == _GETS_CTRLC) { script = (unsigned char *)0; // Disable script } else { script = hold_script; // Re-enable script } } #endif while (true) { if (prompt) { diag_printf("RedBoot> "); prompt = false; } #if CYGNUM_REDBOOT_CMD_LINE_EDITING != 0 cmd_history = true; // Enable history collection #endif res = _rb_gets(line, sizeof(line), CYGNUM_REDBOOT_CLI_IDLE_TIMEOUT); #if CYGNUM_REDBOOT_CMD_LINE_EDITING != 0 cmd_history = false; // Enable history collection #endif if (res == _GETS_TIMEOUT) { // No input arrived } else { #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS if (res == _GETS_GDB) { int dbgchan; hal_virtual_comm_table_t *__chan; int i; // Special case of '$' - need to start GDB protocol gdb_active = true; // Mask interrupts on all channels for (i = 0; i < CYGNUM_HAL_VIRTUAL_VECTOR_NUM_CHANNELS; i++) { CYGACC_CALL_IF_SET_CONSOLE_COMM(i); __chan = CYGACC_CALL_IF_CONSOLE_PROCS(); CYGACC_COMM_IF_CONTROL( *__chan, __COMMCTL_IRQ_DISABLE ); } CYGACC_CALL_IF_SET_CONSOLE_COMM(cur); // set up a temporary context that will take us to the trampoline HAL_THREAD_INIT_CONTEXT((CYG_ADDRESS)workspace_end, breakpoint, trampoline, 0); // switch context to trampoline (get GDB stubs started) HAL_THREAD_SWITCH_CONTEXT(&saved_context, &workspace_end); gdb_active = false; dbgchan = CYGACC_CALL_IF_SET_DEBUG_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT); CYGACC_CALL_IF_SET_CONSOLE_COMM(dbgchan); } else #endif // CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS { #ifdef CYGSEM_REDBOOT_FLASH_ALIASES expand_aliases(line, sizeof(line)); #endif command = (char *)&line; if ((*command == '#') || (*command == '=')) { // Special cases if (*command == '=') { // Print line on console diag_printf("%s\n", &line[2]); } } else { while (strlen(command) > 0) { if ((cmd = parse(&command, &argc, &argv[0])) != (struct cmd *)0) { // Try to handle aborts - messy because of the stack unwinding... __mem_fault_handler = error_handler; if (hal_setjmp(error_jmpbuf)) { diag_printf("** command abort - illegal memory access?\n"); } else { (cmd->fun)(argc, argv); } __mem_fault_handler = 0; } else { diag_printf("** Error: Illegal command: \"%s\"\n", argv[0]); } } } prompt = true; } } } }