void context_main(void)
{
int i;
CYG_TEST_INIT();
// Init all thread contexts:
for( i = 0 ; i < THREADS; i++ )
{
sp[i] = (CYG_ADDRWORD)stack[i]+STACKSIZE;
HAL_THREAD_INIT_CONTEXT( sp[i], i, entry0, i*0x01010000 );
}
// Load the first thread.
HAL_THREAD_LOAD_CONTEXT( &sp[0] );
}
void
do_go(int argc, char *argv[])
{
int i, cur, num_options;
unsigned long entry;
unsigned long oldints;
bool wait_time_set;
int wait_time, res;
bool cache_enabled = false;
#ifdef CYGPKG_IO_ETH_DRIVERS
bool stop_net = false;
#endif
struct option_info opts[3];
char line[8];
hal_virtual_comm_table_t *__chan;
__mem_fault_handler = 0; // Let GDB handle any faults directly
entry = entry_address; // Default from last 'load' operation
init_opts(&opts[0], 'w', true, OPTION_ARG_TYPE_NUM,
(void *)&wait_time, (bool *)&wait_time_set, "wait timeout");
init_opts(&opts[1], 'c', false, OPTION_ARG_TYPE_FLG,
(void *)&cache_enabled, (bool *)0, "go with caches enabled");
num_options = 2;
#ifdef CYGPKG_IO_ETH_DRIVERS
init_opts(&opts[2], 'n', false, OPTION_ARG_TYPE_FLG,
(void *)&stop_net, (bool *)0, "go with network driver stopped");
num_options++;
#endif
CYG_ASSERT(num_options <= NUM_ELEMS(opts), "Too many options");
if (!scan_opts(argc, argv, 1, opts, num_options, (void *)&entry, OPTION_ARG_TYPE_NUM, "starting address"))
{
return;
}
if (entry == (unsigned long)NO_MEMORY) {
diag_printf("No entry point known - aborted\n");
return;
}
if (wait_time_set) {
int script_timeout_ms = wait_time * 1000;
#ifdef CYGSEM_REDBOOT_FLASH_CONFIG
unsigned char *hold_script = script;
script = (unsigned char *)0;
#endif
diag_printf("About to start execution at %p - abort with ^C within %d seconds\n",
(void *)entry, wait_time);
while (script_timeout_ms >= CYGNUM_REDBOOT_CLI_IDLE_TIMEOUT) {
res = _rb_gets(line, sizeof(line), CYGNUM_REDBOOT_CLI_IDLE_TIMEOUT);
if (res == _GETS_CTRLC) {
#ifdef CYGSEM_REDBOOT_FLASH_CONFIG
script = hold_script; // Re-enable script
#endif
return;
}
script_timeout_ms -= CYGNUM_REDBOOT_CLI_IDLE_TIMEOUT;
}
}
// Mask interrupts on all channels
cur = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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);
__chan = CYGACC_CALL_IF_CONSOLE_PROCS();
CYGACC_COMM_IF_CONTROL(*__chan, __COMMCTL_ENABLE_LINE_FLUSH);
#ifdef CYGPKG_IO_ETH_DRIVERS
if (stop_net)
eth_drv_stop();
#endif
HAL_DISABLE_INTERRUPTS(oldints);
HAL_DCACHE_SYNC();
if (!cache_enabled) {
HAL_ICACHE_DISABLE();
HAL_DCACHE_DISABLE();
HAL_DCACHE_SYNC();
}
HAL_ICACHE_INVALIDATE_ALL();
HAL_DCACHE_INVALIDATE_ALL();
// set up a temporary context that will take us to the trampoline
HAL_THREAD_INIT_CONTEXT((CYG_ADDRESS)workspace_end, entry, trampoline, 0);
// switch context to trampoline
HAL_THREAD_SWITCH_CONTEXT(&saved_context, &workspace_end);
// we get back here by way of return_to_redboot()
// undo the changes we made before switching context
if (!cache_enabled) {
HAL_ICACHE_ENABLE();
HAL_DCACHE_ENABLE();
}
CYGACC_COMM_IF_CONTROL(*__chan, __COMMCTL_DISABLE_LINE_FLUSH);
HAL_RESTORE_INTERRUPTS(oldints);
diag_printf("\nProgram completed with status %d\n", return_status);
}
//
// 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;
}
}
}
}
void
do_go(int argc, char *argv[])
{
unsigned long entry;
unsigned long oldints;
bool wait_time_set;
int wait_time, res;
bool cache_enabled = false;
struct option_info opts[2];
char line[8];
hal_virtual_comm_table_t *__chan = CYGACC_CALL_IF_CONSOLE_PROCS();
entry = entry_address; // Default from last 'load' operation
init_opts(&opts[0], 'w', true, OPTION_ARG_TYPE_NUM,
(void **)&wait_time, (bool *)&wait_time_set, "wait timeout");
init_opts(&opts[1], 'c', false, OPTION_ARG_TYPE_FLG,
(void **)&cache_enabled, (bool *)0, "go with caches enabled");
if (!scan_opts(argc, argv, 1, opts, 2, (void *)&entry, OPTION_ARG_TYPE_NUM, "starting address"))
{
return;
}
if (wait_time_set) {
int script_timeout_ms = wait_time * 1000;
#ifdef CYGSEM_REDBOOT_FLASH_CONFIG
unsigned char *hold_script = script;
script = (unsigned char *)0;
#endif
diag_printf("About to start execution at %p - abort with ^C within %d seconds\n",
(void *)entry, wait_time);
while (script_timeout_ms >= CYGNUM_REDBOOT_CLI_IDLE_TIMEOUT) {
res = _rb_gets(line, sizeof(line), CYGNUM_REDBOOT_CLI_IDLE_TIMEOUT);
if (res == _GETS_CTRLC) {
#ifdef CYGSEM_REDBOOT_FLASH_CONFIG
script = hold_script; // Re-enable script
#endif
return;
}
script_timeout_ms -= CYGNUM_REDBOOT_CLI_IDLE_TIMEOUT;
}
}
CYGACC_COMM_IF_CONTROL(*__chan, __COMMCTL_ENABLE_LINE_FLUSH);
HAL_DISABLE_INTERRUPTS(oldints);
HAL_DCACHE_SYNC();
if (!cache_enabled) {
HAL_ICACHE_DISABLE();
HAL_DCACHE_DISABLE();
HAL_DCACHE_SYNC();
}
HAL_ICACHE_INVALIDATE_ALL();
HAL_DCACHE_INVALIDATE_ALL();
// set up a temporary context that will take us to the trampoline
HAL_THREAD_INIT_CONTEXT((CYG_ADDRESS)workspace_end, entry, go_trampoline, 0);
// switch context to trampoline
HAL_THREAD_SWITCH_CONTEXT(&go_saved_context, &workspace_end);
// we get back here by way of return_to_redboot()
// undo the changes we made before switching context
if (!cache_enabled) {
HAL_ICACHE_ENABLE();
HAL_DCACHE_ENABLE();
}
CYGACC_COMM_IF_CONTROL(*__chan, __COMMCTL_DISABLE_LINE_FLUSH);
HAL_RESTORE_INTERRUPTS(oldints);
diag_printf("\nProgram completed with status %d\n", go_return_status);
}