示例#1
0
//
// 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;

    // 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);
    workspace_size = CYGMEM_SECTION_heap1_SIZE;
#else
    workspace_start = (unsigned char *)CYGMEM_REGION_ram;
    workspace_end = (unsigned char *)(CYGMEM_REGION_ram+CYGMEM_REGION_ram_SIZE);
    workspace_size = 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;
        workspace_size = workspace_end - workspace_start;
    }

    bist();

    for (init_entry = __RedBoot_INIT_TAB__; init_entry != &__RedBoot_INIT_TAB_END__;  init_entry++) {
        (*init_entry->fun)();
    }

    user_ram_start = workspace_start;
    user_ram_end = workspace_end;

    do_version(0,0);

#ifdef CYGFUN_REDBOOT_BOOT_SCRIPT
# ifdef CYGDAT_REDBOOT_DEFAULT_BOOT_SCRIPT
    if (!script) {
      script = CYGDAT_REDBOOT_DEFAULT_BOOT_SCRIPT;
#  ifndef CYGSEM_REDBOOT_FLASH_CONFIG
      script_timeout = CYGNUM_REDBOOT_BOOT_SCRIPT_DEFAULT_TIMEOUT;
#  endif
    }
# 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);
#ifdef HAL_ARCH_PROGRAM_NEW_STACK
                HAL_ARCH_PROGRAM_NEW_STACK(breakpoint);
#else
                breakpoint();  // Get GDB stubs started, with a proper environment, etc.
#endif
		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
            {
                expand_aliases(line, sizeof(line));
		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) {
                            (cmd->fun)(argc, argv);
                        } else {
                            diag_printf("** Error: Illegal command: \"%s\"\n", argv[0]);
                        }
                    }
                }
                prompt = true;
            }
        }
    }
}
示例#2
0
文件: main.c 项目: cilynx/dd-wrt
//
// 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;
            }
        }
    }
}