[z180-stamp.git] / avr / cmd_boot.c

/*
 * (C) Copyright 2014-2016 Leo C. <erbl259-lmu@yahoo.de>
 *
 * (C) Copyright 2000-2003
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * SPDX-License-Identifier:	GPL-2.0
 */

/*
 * Misc boot support
 */
#include "cmd_boot.h"
#include <ctype.h>
#include <util/atomic.h>

#include "cli_readline.h"	/* console_buffer[] */
#include "cli.h"			/* run_command() */
#include "env.h"
#include "eval_arg.h"
#include "con-utils.h"
#include "getopt-min.h"
#include "z80-if.h"
#include "z180-serv.h"	/* restart_z180_serv() */
#include "debug.h"

/* ugly hack to get Z180 loadfile into flash memory */
#define const const FLASH
#include "../z180/hdrom.h"
#include "../z180/cfboot.h"
#undef const


command_ret_t do_loadf(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc UNUSED, char * const argv[] UNUSED)
{
	if (z80_bus_state() & ZST_RUNNING)
		cmd_error(CMD_RET_FAILURE, ERUNNING, NULL);
	z80_bus_request_or_exit();
	z80_load_mem(2, hdrom,
				&hdrom_sections,
				hdrom_address,
				hdrom_length_of_sections);

	z80_bus_cmd(Release);

	return CMD_RET_SUCCESS;
}


void print_vars(char *title)
{
	uint8_t buf[5];
	zstate_t state = z80_bus_state();

	if((state & ZST_ACQUIRED) == 0)
		z80_bus_cmd(Request);

	z80_read_block(buf,	9, sizeof buf);

	if((state & ZST_ACQUIRED) == 0)
		z80_bus_cmd(Release);

	printf_P(PSTR("%s: stage: %d, flag: 0x%.02x, result: %d, IDE stat/error: 0x%.02x/0x%.02x\n"),
				title, buf[0], buf[1], buf[2], buf[3], buf[4]);
}


/*
 *  bootcf [options]
 *
 *		-a	address			(100h)
 *		-s	start sector	(0)
 *		-c	sector count	(7)
 *		-i	Partition id	(52)
 *		-n  load only
 *		-t	timeout			(10000)
 * 		-v	verbose
 */

command_ret_t do_bootcf(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char * const argv[])
{
	struct {
		uint8_t  jr[2];
		uint16_t loadaddr;
		uint8_t  sec_start;
		uint8_t  sec_cnt;
		uint8_t  part_id;
		uint16_t timeout;
		uint8_t  stages;
	} boot_param;

	struct {
		uint8_t  stages;
		uint8_t  done;
		uint8_t  result;
		uint8_t  ide_stat;
		uint8_t  ide_error;
	} boot_res;

	int_fast8_t verbosity = 0;
	uint8_t default_stages;
	uint32_t val;
	ERRNUM res = ESUCCESS;

	/* get default values */
	memcpy_P(&boot_param, cfboot, sizeof boot_param);
	default_stages = boot_param.stages;

	int opt;
	while ((opt = getopt(argc, argv, PSTR("vna:s:c:t:i:"))) != -1) {
		switch (opt) {
		case 'v':
			verbosity++;
			break;
		case 'n':
			if (boot_param.stages > 0)
				boot_param.stages--;
			break;
		case 'a':
			val = eval_arg(optarg, NULL);
			if (val < 0x100 || val > 0xFE00) {
				printf_P(PSTR("Address out of range: 0x%.4lX\n"), val);
				return CMD_RET_FAILURE;
			}
			boot_param.loadaddr = val;
			break;
		case 's':
			val = eval_arg(optarg, NULL);
			if (val > 255) {
				printf_P(PSTR("Start sector out of range: 0x%lX\n"), val);
				return CMD_RET_FAILURE;
			}
			boot_param.sec_start = val;
			break;
		case 'c':
			val = eval_arg(optarg, NULL);
			if (val > 127) {
				printf_P(PSTR("Sector count out of range: 0x%lX\n"), val);
				return CMD_RET_FAILURE;
			}
			boot_param.sec_cnt = val;
			break;
		case 't':
			val = eval_arg(optarg, NULL);
			if (val < 0x1 || val > 0xFFFF) {
				printf_P(PSTR("Timeout value out of range: 0x%lX\n"), val);
				return CMD_RET_FAILURE;
			}
			boot_param.timeout = val;
			break;
		case 'i':
			val = eval_arg(optarg, NULL);
			if (val < 0x01 || val > 0xFF) {
				printf_P(PSTR("Partition id out of range: 0x%lX\n"), val);
				return CMD_RET_FAILURE;
			}
			boot_param.part_id = val;
			break;
		default: /* '?' */
			return CMD_RET_USAGE;
		}
	}

	/* remaining arguments */
	argc -= optind;
	if (argc) {
		my_puts_P(PSTR("Argument error!\n"));
		return CMD_RET_USAGE;
	}

	if ((val = (uint32_t) boot_param.loadaddr + boot_param.sec_cnt * 512) >= 0xFF00) {
		printf_P(PSTR("Top address out of range: 0x%.4lX\n"), val);
		return CMD_RET_FAILURE;
	}

	if (z80_bus_state() & ZST_RUNNING)
		cmd_error(CMD_RET_FAILURE, ERUNNING, NULL);
	z80_bus_request_or_exit();
	z80_load_mem(verbosity, cfboot,
				&cfboot_sections,
				cfboot_address,
				cfboot_length_of_sections);

	z80_write_block((const uint8_t *) &boot_param,
				cfboot_address[0], sizeof boot_param);
	z80_bus_cmd(Release);

	if (boot_param.stages == 0) {
		printf_P(PSTR("Bootloader loaded at: 0x%.4X\n"), (uint16_t) cfboot_address[0]);
	} else {
		printf_P(PSTR("Executing %d of %d Bootloader stages...\n"),
				boot_param.stages, default_stages);

		z80_bus_cmd(Run);
		z80_bus_cmd(Release);

		clear_ctrlc();		/* forget any previous Control C */
		for (boot_res.done = 0; boot_res.done != 0xFF;) {
			_delay_ms(8);
			/* check for ctrl-c to abort... */
			if (had_ctrlc() || ctrlc()) {
				break;
			}
			z80_bus_cmd(Request);
			z80_read_block((uint8_t *) &boot_res,
					cfboot_address[0]+sizeof boot_param - 1, sizeof boot_res);
			z80_bus_cmd(Release);
		}

		if (boot_res.done != 0xFF) {
			z80_bus_cmd(Reset);
			my_puts_P(PSTR("Abort\n"));
		} else {
			if (boot_param.stages == default_stages &&
					boot_res.stages == 0 &&
					boot_res.result == 0) {
				my_puts_P(PSTR("Booting...\n"));
			} else {
				z80_bus_cmd(Reset);
				boot_res.stages++;
				printf_P(PSTR("Bootloader stopped at stage %d, result: %d, IDE stat/error: 0x%.02x/0x%.02x\n"),
					boot_param.stages - boot_res.stages,
					boot_res.result, boot_res.ide_stat, boot_res.ide_error);
			}
		}
	}

	return CMD_RET_SUCCESS;
}

command_ret_t do_busreq_pulse(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char * const argv[])
{
	uint16_t count=1;

	if (!(z80_bus_state() & ZST_RUNNING)) {
		printf_P(PSTR("## CPU is not running!\n"));
		return CMD_RET_FAILURE;
	}

	if (argc > 1)
		count = (uint16_t) eval_arg(argv[1], NULL);

	z80_bus_cmd(Request);
	while (count--)
		z80_bus_cmd(M_Cycle);

	return CMD_RET_SUCCESS;
}


command_ret_t do_go(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char * const argv[])
{
	uint32_t addr;
	bool hold = 0;

	int opt;
	while ((opt = getopt(argc, argv, PSTR("h"))) != -1) {
		switch (opt) {
		case 'h':
			hold = 1;
			break;
		default: /* '?' */
			return CMD_RET_USAGE;
		}
	}
	argc -= optind; /* remaining arguments */

	if (argc != 1)
		return CMD_RET_USAGE;
	addr = eval_arg(argv[optind], NULL);
	if (addr >= (1UL<<16)) {
		printf_P(PSTR("Invalid startaddress: 0x%05lx\n"
			"   (Out of logical address space (0x00000-0x0ffff))\n"),
			addr);
		return CMD_RET_FAILURE;
	}

	if (z80_bus_state() & ZST_RUNNING) {
		printf_P(PSTR("CPU already running!\n"));
		return CMD_RET_FAILURE;
	}

	printf_P(PSTR("Starting application at 0x%04lx ...\n"), addr);

	if (addr != 0) {
		uint8_t tmp[3];

		z80_bus_cmd(Request);
		z80_read_block (tmp, 0, 3);
		z80_write(0, 0xc3);
		z80_write(1, addr);
		z80_write(2, (addr >> 8));

		z80_bus_cmd(Run);
		_delay_us(10);
		z80_bus_cmd(M_Cycle);
		_delay_us(10);
		z80_bus_cmd(M_Cycle);
		_delay_us(10);
		z80_write_block(tmp, 0, 3);
	} else {
		if (!hold)
			z80_bus_cmd(Request);
		z80_bus_cmd(Run);
	}
	if (!hold)
		z80_bus_cmd(Release);

	return CMD_RET_SUCCESS;
}

static
void reset_cpu(bus_cmd_t mode)
{
	restart_z180_serv();
	z80_bus_cmd(mode);
}


command_ret_t do_reset(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc UNUSED, char * const argv[] UNUSED)
{
	printf_P(PSTR("CPU now in reset state.\n"));

	reset_cpu(Reset);
	return CMD_RET_SUCCESS;
}

command_ret_t do_restart(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc UNUSED, char * const argv[] UNUSED)
{
	reset_cpu(Restart);

	return CMD_RET_SUCCESS;
}

static
void print_con_usage(char esc)
{	printf_P(PSTR("\n"
		"------------------------------------------------\n"
		" ?,H - This Help\n"
		" Q,X - Return to command line\n"
		" R   - Reset (Restart) CPU\n"
		" :   - Execute monitor command\n"
		" \\   - code input:\n"
		"       \\nnn   3 decimal digits character code\n"
		"       \\Xhh   2 hexadecimal digits character code\n"
		" ^%c  - (Escape char) Type again to send itself\n"
		"key>"
	), esc + 0x40);
}

command_ret_t do_console(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc UNUSED, char * const argv[] UNUSED)
{
	int ch;
	uint8_t pending;
	uint8_t code = 0;
	uint8_t state = 0;
	char esc_char = (char) getenv_ulong(PSTR(ENV_ESC_CHAR), 16, CONFIG_ESC_CHAR);

	printf_P(PSTR("Connecting to CPU. Escape character is '^%c'.\n"),
					esc_char + 0x40);

	while (1) {

		ATOMIC_BLOCK(ATOMIC_FORCEON) {
			pending = (Stat & S_CON_PENDING) != 0;
			Stat &= ~S_CON_PENDING;
		}
		if (pending) {
			uint8_t count = 100;
			while ((ch = z80_memfifo_getc(fifo_conout)) >= 0 && --count)
				putchar(ch);
		}

		if ((ch = my_getchar(0)) >= 0) {
			switch (state) {
			case 0:
				if (ch == esc_char) {
					state = 1;
					/* TODO: Timer starten */
				} else {
					z80_memfifo_putc(fifo_conin, ch);
				}
				break;
			case 2:
				my_puts_P(PSTR("\n"
				  "------------------------------------------------\n"));
			case 1:
				state = 0;
				switch (toupper(ch)) {

				case '?':
				case 'H':
					print_con_usage(esc_char);
					state = 2;
					break;

				case 'R':
					reset_cpu(Restart);
					break;

				case 'X':
				case 'Q':
					putchar('\n');
					goto quit;
					break;

				case ':':
						putchar('\n');
						int cmdlen = cli_readline(PSTR(": "), 1);
						if (cmdlen > 0)
							run_command(console_buffer, 0);
					break;

				case '\\':
					code = 0;
					state = 3;
					break;

				default:
					if (ch == esc_char)
						z80_memfifo_putc(fifo_conin, ch);
					break;
				}
				break;
			case 3:
				if (toupper(ch) == 'X') {
					state = 6;
					break;
				}
				/* fall thru */
			case 4:
			case 5:
				if (isdigit(ch)) {
					code = code * 10 + ch - '0';
					state++;
				} else {
					if (state > 3)
						z80_memfifo_putc(fifo_conin, code);
					z80_memfifo_putc(fifo_conin, ch);
					state = 0;
				}
				if (state > 5) {
					z80_memfifo_putc(fifo_conin, code);
					state = 0;
				}
				break;
			case 6:
			case 7:
				if (isxdigit(ch)) {
					ch = toupper(ch);
					if (ch >= 'A')
						ch -= 'A' - 10;
					code = code * 16 + ch - '0';
					state++;
				}else {
					if (state > 6)
						z80_memfifo_putc(fifo_conin, code);
					z80_memfifo_putc(fifo_conin, ch);
					state = 0;
				}
				if (state > 7) {
					z80_memfifo_putc(fifo_conin, code);
					state = 0;
				}
				break;
			}
		}
	}
quit:
	return CMD_RET_SUCCESS;
}
Commit	Line	Data
35edb766	1	/*
04b3ea0e	2	* (C) Copyright 2014-2016 Leo C. <erbl259-lmu@yahoo.de>
35edb766 L	3	*
	4	* (C) Copyright 2000-2003
	5	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	6	*
19a463f4	7	* SPDX-License-Identifier: GPL-2.0
35edb766	8	*/
534e1dfc L	9
	10	/*
	11	* Misc boot support
	12	*/
7eecbdac	13	#include "cmd_boot.h"
8a7decea	14	#include <ctype.h>
89adce76	15	#include <util/atomic.h>
534e1dfc	16
04b3ea0e L	17	#include "cli_readline.h" /* console_buffer[] */
04b3ea0e L	18	#include "cli.h" /* run_command() */
612a6965	19	#include "env.h"
2d914b45	20	#include "eval_arg.h"
89adce76	21	#include "con-utils.h"
a2907f2e	22	#include "getopt-min.h"
534e1dfc	23	#include "z80-if.h"
cb4fb1ed	24	#include "z180-serv.h" /* restart_z180_serv() */
8a7decea	25	#include "debug.h"
534e1dfc L	26
	27	/* ugly hack to get Z180 loadfile into flash memory */
	28	#define const const FLASH
	29	#include "../z180/hdrom.h"
a2907f2e	30	#include "../z180/cfboot.h"
534e1dfc L	31	#undef const
	32
	33
5e8ac5e0	34	command_ret_t do_loadf(cmd_tbl_t cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc UNUSED, char const argv[] UNUSED)
534e1dfc	35	{
e9d96859 L	36	if (z80_bus_state() & ZST_RUNNING)
	37	cmd_error(CMD_RET_FAILURE, ERUNNING, NULL);
	38	z80_bus_request_or_exit();
a2907f2e L	39	z80_load_mem(2, hdrom,
	40	&hdrom_sections,
	41	hdrom_address,
	42	hdrom_length_of_sections);
	43
612a6965	44	z80_bus_cmd(Release);
6035a17b	45
d0581f88	46	return CMD_RET_SUCCESS;
534e1dfc L	47	}
	48
	49
a2907f2e L	50	void print_vars(char *title)
	51	{
	52	uint8_t buf[5];
	53	zstate_t state = z80_bus_state();
	54
	55	if((state & ZST_ACQUIRED) == 0)
	56	z80_bus_cmd(Request);
	57
	58	z80_read_block(buf, 9, sizeof buf);
	59
	60	if((state & ZST_ACQUIRED) == 0)
	61	z80_bus_cmd(Release);
	62
	63	printf_P(PSTR("%s: stage: %d, flag: 0x%.02x, result: %d, IDE stat/error: 0x%.02x/0x%.02x\n"),
	64	title, buf[0], buf[1], buf[2], buf[3], buf[4]);
	65	}
	66
	67
	68	/*
	69	* bootcf [options]
	70	*
	71	* -a address (100h)
	72	* -s start sector (0)
	73	* -c sector count (7)
	74	* -i Partition id (52)
	75	* -n load only
	76	* -t timeout (10000)
	77	* -v verbose
	78	*/
	79
5e8ac5e0	80	command_ret_t do_bootcf(cmd_tbl_t cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char const argv[])
a2907f2e L	81	{
	82	struct {
	83	uint8_t jr[2];
	84	uint16_t loadaddr;
	85	uint8_t sec_start;
	86	uint8_t sec_cnt;
	87	uint8_t part_id;
	88	uint16_t timeout;
16af58ea	89	uint8_t stages;
a2907f2e L	90	} boot_param;
	91
	92	struct {
16af58ea	93	uint8_t stages;
a2907f2e L	94	uint8_t done;
	95	uint8_t result;
	96	uint8_t ide_stat;
	97	uint8_t ide_error;
	98	} boot_res;
	99
	100	int_fast8_t verbosity = 0;
16af58ea	101	uint8_t default_stages;
a2907f2e	102	uint32_t val;
5e8ac5e0	103	ERRNUM res = ESUCCESS;
a2907f2e L	104
	105	/* get default values */
	106	memcpy_P(&boot_param, cfboot, sizeof boot_param);
16af58ea	107	default_stages = boot_param.stages;
a2907f2e	108
a2907f2e L	109	int opt;
	110	while ((opt = getopt(argc, argv, PSTR("vna:s:c:t:i:"))) != -1) {
	111	switch (opt) {
	112	case 'v':
	113	verbosity++;
	114	break;
	115	case 'n':
16af58ea L	116	if (boot_param.stages > 0)
16af58ea L	117	boot_param.stages--;
a2907f2e L	118	break;
a2907f2e L	119	case 'a':
2d914b45	120	val = eval_arg(optarg, NULL);
a2907f2e L	121	if (val < 0x100 \|\| val > 0xFE00) {
	122	printf_P(PSTR("Address out of range: 0x%.4lX\n"), val);
	123	return CMD_RET_FAILURE;
	124	}
	125	boot_param.loadaddr = val;
	126	break;
	127	case 's':
2d914b45	128	val = eval_arg(optarg, NULL);
a2907f2e L	129	if (val > 255) {
	130	printf_P(PSTR("Start sector out of range: 0x%lX\n"), val);
	131	return CMD_RET_FAILURE;
	132	}
	133	boot_param.sec_start = val;
	134	break;
	135	case 'c':
2d914b45	136	val = eval_arg(optarg, NULL);
a2907f2e L	137	if (val > 127) {
	138	printf_P(PSTR("Sector count out of range: 0x%lX\n"), val);
	139	return CMD_RET_FAILURE;
	140	}
	141	boot_param.sec_cnt = val;
	142	break;
	143	case 't':
2d914b45	144	val = eval_arg(optarg, NULL);
a2907f2e L	145	if (val < 0x1 \|\| val > 0xFFFF) {
	146	printf_P(PSTR("Timeout value out of range: 0x%lX\n"), val);
	147	return CMD_RET_FAILURE;
	148	}
16af58ea	149	boot_param.timeout = val;
a2907f2e L	150	break;
a2907f2e L	151	case 'i':
2d914b45	152	val = eval_arg(optarg, NULL);
a2907f2e L	153	if (val < 0x01 \|\| val > 0xFF) {
	154	printf_P(PSTR("Partition id out of range: 0x%lX\n"), val);
	155	return CMD_RET_FAILURE;
	156	}
	157	boot_param.part_id = val;
	158	break;
	159	default: /* '?' */
	160	return CMD_RET_USAGE;
	161	}
	162	}
	163
	164	/* remaining arguments */
	165	argc -= optind;
	166	if (argc) {
	167	my_puts_P(PSTR("Argument error!\n"));
	168	return CMD_RET_USAGE;
	169	}
	170
	171	if ((val = (uint32_t) boot_param.loadaddr + boot_param.sec_cnt * 512) >= 0xFF00) {
	172	printf_P(PSTR("Top address out of range: 0x%.4lX\n"), val);
	173	return CMD_RET_FAILURE;
	174	}
	175
e9d96859 L	176	if (z80_bus_state() & ZST_RUNNING)
	177	cmd_error(CMD_RET_FAILURE, ERUNNING, NULL);
	178	z80_bus_request_or_exit();
a2907f2e L	179	z80_load_mem(verbosity, cfboot,
	180	&cfboot_sections,
	181	cfboot_address,
	182	cfboot_length_of_sections);
	183
	184	z80_write_block((const uint8_t *) &boot_param,
	185	cfboot_address[0], sizeof boot_param);
	186	z80_bus_cmd(Release);
	187
16af58ea	188	if (boot_param.stages == 0) {
a2907f2e L	189	printf_P(PSTR("Bootloader loaded at: 0x%.4X\n"), (uint16_t) cfboot_address[0]);
	190	} else {
	191	printf_P(PSTR("Executing %d of %d Bootloader stages...\n"),
16af58ea	192	boot_param.stages, default_stages);
a2907f2e L	193
	194	z80_bus_cmd(Run);
	195	z80_bus_cmd(Release);
	196
	197	clear_ctrlc(); /* forget any previous Control C */
	198	for (boot_res.done = 0; boot_res.done != 0xFF;) {
	199	_delay_ms(8);
	200	/* check for ctrl-c to abort... */
	201	if (had_ctrlc() \|\| ctrlc()) {
	202	break;
	203	}
	204	z80_bus_cmd(Request);
	205	z80_read_block((uint8_t *) &boot_res,
	206	cfboot_address[0]+sizeof boot_param - 1, sizeof boot_res);
	207	z80_bus_cmd(Release);
	208	}
	209
	210	if (boot_res.done != 0xFF) {
	211	z80_bus_cmd(Reset);
	212	my_puts_P(PSTR("Abort\n"));
	213	} else {
16af58ea L	214	if (boot_param.stages == default_stages &&
	215	boot_res.stages == 0 &&
	216	boot_res.result == 0) {
a2907f2e L	217	my_puts_P(PSTR("Booting...\n"));
	218	} else {
	219	z80_bus_cmd(Reset);
16af58ea	220	boot_res.stages++;
a2907f2e	221	printf_P(PSTR("Bootloader stopped at stage %d, result: %d, IDE stat/error: 0x%.02x/0x%.02x\n"),
16af58ea	222	boot_param.stages - boot_res.stages,
a2907f2e L	223	boot_res.result, boot_res.ide_stat, boot_res.ide_error);
	224	}
	225	}
	226	}
	227
	228	return CMD_RET_SUCCESS;
	229	}
	230
5e8ac5e0	231	command_ret_t do_busreq_pulse(cmd_tbl_t cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char const argv[])
534e1dfc	232	{
f338df2a	233	uint16_t count=1;
534e1dfc	234
6035a17b	235	if (!(z80_bus_state() & ZST_RUNNING)) {
f338df2a	236	printf_P(PSTR("## CPU is not running!\n"));
d0581f88	237	return CMD_RET_FAILURE;
534e1dfc L	238	}
534e1dfc L	239
f338df2a	240	if (argc > 1)
2d914b45	241	count = (uint16_t) eval_arg(argv[1], NULL);
f338df2a	242
62f624d3	243	z80_bus_cmd(Request);
f338df2a	244	while (count--)
62f624d3	245	z80_bus_cmd(M_Cycle);
534e1dfc	246
d0581f88	247	return CMD_RET_SUCCESS;
f338df2a L	248	}
	249
	250
5e8ac5e0	251	command_ret_t do_go(cmd_tbl_t cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char const argv[])
f338df2a L	252	{
f338df2a L	253	uint32_t addr;
9403f939	254	bool hold = 0;
f338df2a	255
9403f939 L	256	int opt;
	257	while ((opt = getopt(argc, argv, PSTR("h"))) != -1) {
	258	switch (opt) {
	259	case 'h':
	260	hold = 1;
	261	break;
	262	default: /* '?' */
	263	return CMD_RET_USAGE;
	264	}
	265	}
	266	argc -= optind; /* remaining arguments */
	267
	268	if (argc != 1)
f338df2a	269	return CMD_RET_USAGE;
9403f939	270	addr = eval_arg(argv[optind], NULL);
f338df2a	271	if (addr >= (1UL<<16)) {
51dd0948	272	printf_P(PSTR("Invalid startaddress: 0x%05lx\n"
534e1dfc L	273	" (Out of logical address space (0x00000-0x0ffff))\n"),
534e1dfc L	274	addr);
d0581f88	275	return CMD_RET_FAILURE;
6035a17b	276	}
f338df2a	277
6035a17b	278	if (z80_bus_state() & ZST_RUNNING) {
51dd0948	279	printf_P(PSTR("CPU already running!\n"));
d0581f88	280	return CMD_RET_FAILURE;
534e1dfc L	281	}
534e1dfc L	282
51dd0948	283	printf_P(PSTR("Starting application at 0x%04lx ...\n"), addr);
f338df2a L	284
	285	if (addr != 0) {
	286	uint8_t tmp[3];
6035a17b	287
62f624d3	288	z80_bus_cmd(Request);
19a463f4	289	z80_read_block (tmp, 0, 3);
f338df2a L	290	z80_write(0, 0xc3);
	291	z80_write(1, addr);
	292	z80_write(2, (addr >> 8));
	293
62f624d3	294	z80_bus_cmd(Run);
9403f939	295	_delay_us(10);
62f624d3	296	z80_bus_cmd(M_Cycle);
9403f939	297	_delay_us(10);
62f624d3	298	z80_bus_cmd(M_Cycle);
9403f939	299	_delay_us(10);
19a463f4	300	z80_write_block(tmp, 0, 3);
9403f939 L	301	} else {
	302	if (!hold)
	303	z80_bus_cmd(Request);
62f624d3	304	z80_bus_cmd(Run);
9403f939 L	305	}
	306	if (!hold)
	307	z80_bus_cmd(Release);
f338df2a	308
d0581f88	309	return CMD_RET_SUCCESS;
534e1dfc L	310	}
534e1dfc L	311
8a7decea L	312	static
	313	void reset_cpu(bus_cmd_t mode)
	314	{
	315	restart_z180_serv();
	316	z80_bus_cmd(mode);
	317	}
	318
	319
5e8ac5e0	320	command_ret_t do_reset(cmd_tbl_t cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc UNUSED, char const argv[] UNUSED)
534e1dfc	321	{
612a6965	322	printf_P(PSTR("CPU now in reset state.\n"));
534e1dfc	323
8a7decea	324	reset_cpu(Reset);
d0581f88	325	return CMD_RET_SUCCESS;
534e1dfc L	326	}
534e1dfc L	327
5e8ac5e0	328	command_ret_t do_restart(cmd_tbl_t cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc UNUSED, char const argv[] UNUSED)
534e1dfc	329	{
8a7decea	330	reset_cpu(Restart);
534e1dfc	331
d0581f88	332	return CMD_RET_SUCCESS;
534e1dfc L	333	}
534e1dfc L	334
8a7decea L	335	static
	336	void print_con_usage(char esc)
	337	{ printf_P(PSTR("\n"
	338	"------------------------------------------------\n"
	339	" ?,H - This Help\n"
8a7decea	340	" Q,X - Return to command line\n"
b08e079d L	341	" R - Reset (Restart) CPU\n"
b08e079d L	342	" : - Execute monitor command\n"
612a6965 L	343	" \\ - code input:\n"
	344	" \\nnn 3 decimal digits character code\n"
	345	" \\Xhh 2 hexadecimal digits character code\n"
	346	" ^%c - (Escape char) Type again to send itself\n"
8a7decea L	347	"key>"
	348	), esc + 0x40);
	349	}
89adce76	350
5e8ac5e0	351	command_ret_t do_console(cmd_tbl_t cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc UNUSED, char const argv[] UNUSED)
89adce76 L	352	{
89adce76 L	353	int ch;
8a7decea	354	uint8_t pending;
8a7decea L	355	uint8_t code = 0;
8a7decea L	356	uint8_t state = 0;
612a6965	357	char esc_char = (char) getenv_ulong(PSTR(ENV_ESC_CHAR), 16, CONFIG_ESC_CHAR);
ea6971b8	358
b08e079d L	359	printf_P(PSTR("Connecting to CPU. Escape character is '^%c'.\n"),
b08e079d L	360	esc_char + 0x40);
89adce76 L	361
	362	while (1) {
	363
8a7decea	364	ATOMIC_BLOCK(ATOMIC_FORCEON) {
89adce76 L	365	pending = (Stat & S_CON_PENDING) != 0;
	366	Stat &= ~S_CON_PENDING;
	367	}
3ad4143b L	368	if (pending) {
	369	uint8_t count = 100;
	370	while ((ch = z80_memfifo_getc(fifo_conout)) >= 0 && --count)
89adce76	371	putchar(ch);
3ad4143b	372	}
89adce76 L	373
	374	if ((ch = my_getchar(0)) >= 0) {
	375	switch (state) {
	376	case 0:
612a6965	377	if (ch == esc_char) {
89adce76 L	378	state = 1;
	379	/* TODO: Timer starten */
	380	} else {
	381	z80_memfifo_putc(fifo_conin, ch);
ea6971b8	382	}
89adce76	383	break;
8a7decea	384	case 2:
5e8ac5e0	385	my_puts_P(PSTR("\n"
8a7decea	386	"------------------------------------------------\n"));
89adce76	387	case 1:
8a7decea L	388	state = 0;
8a7decea L	389	switch (toupper(ch)) {
89adce76	390
8a7decea L	391	case '?':
8a7decea L	392	case 'H':
612a6965	393	print_con_usage(esc_char);
8a7decea	394	state = 2;
89adce76 L	395	break;
89adce76 L	396
8a7decea L	397	case 'R':
8a7decea L	398	reset_cpu(Restart);
89adce76 L	399	break;
89adce76 L	400
8a7decea	401	case 'X':
89adce76	402	case 'Q':
5e8ac5e0	403	putchar('\n');
89adce76 L	404	goto quit;
	405	break;
	406
b08e079d L	407	case ':':
b08e079d L	408	putchar('\n');
8ed66016	409	int cmdlen = cli_readline(PSTR(": "), 1);
b08e079d L	410	if (cmdlen > 0)
	411	run_command(console_buffer, 0);
	412	break;
	413
8a7decea L	414	case '\\':
	415	code = 0;
	416	state = 3;
	417	break;
	418
8a7decea	419	default:
612a6965 L	420	if (ch == esc_char)
612a6965 L	421	z80_memfifo_putc(fifo_conin, ch);
8a7decea L	422	break;
	423	}
	424	break;
	425	case 3:
	426	if (toupper(ch) == 'X') {
	427	state = 6;
	428	break;
	429	}
	430	/* fall thru */
	431	case 4:
	432	case 5:
	433	if (isdigit(ch)) {
	434	code = code * 10 + ch - '0';
	435	state++;
b08e079d L	436	} else {
	437	if (state > 3)
	438	z80_memfifo_putc(fifo_conin, code);
	439	z80_memfifo_putc(fifo_conin, ch);
	440	state = 0;
8a7decea L	441	}
	442	if (state > 5) {
	443	z80_memfifo_putc(fifo_conin, code);
	444	state = 0;
	445	}
	446	break;
	447	case 6:
	448	case 7:
	449	if (isxdigit(ch)) {
	450	ch = toupper(ch);
	451	if (ch >= 'A')
	452	ch -= 'A' - 10;
	453	code = code * 16 + ch - '0';
	454	state++;
b08e079d L	455	}else {
	456	if (state > 6)
	457	z80_memfifo_putc(fifo_conin, code);
	458	z80_memfifo_putc(fifo_conin, ch);
	459	state = 0;
8a7decea L	460	}
	461	if (state > 7) {
	462	z80_memfifo_putc(fifo_conin, code);
	463	state = 0;
89adce76	464	}
89adce76 L	465	break;
	466	}
	467	}
89adce76 L	468	}
89adce76 L	469	quit:
89adce76 L	470	return CMD_RET_SUCCESS;
89adce76 L	471	}