[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


static void z80_load_mem(int_fast8_t verbosity,
				const FLASH unsigned char data[],
				const FLASH unsigned long *sections,
				const FLASH unsigned long address[],
				const FLASH unsigned long length_of_sections[])
{
	uint32_t sec_base = 0;

	if (verbosity > 1)
		printf_P(PSTR("Loading Z180 memory... \n"));

	for (unsigned sec = 0; sec < *sections; sec++) {
		if (verbosity > 0) {
			printf_P(PSTR("   From: 0x%.5lX to: 0x%.5lX    (%5li bytes)\n"),
					address[sec],
					address[sec]+length_of_sections[sec] - 1,
					length_of_sections[sec]);
		}

		z80_write_block_P((const FLASH unsigned char *) &data[sec_base],  /* src */
				address[sec],                  /* dest */
				length_of_sections[sec]);      /* len */
		sec_base += length_of_sections[sec];
	}
}

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;

	/* reset getopt() */
	optind = 0;

	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;

	if (argc < 2)
		return CMD_RET_USAGE;
	addr = eval_arg(argv[1], NULL);
	if (addr >= (1UL<<16)) {
		printf_P(PSTR("## Startaddress 0x%05lx too high.\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);
		z80_bus_cmd(M_Cycle);
		z80_bus_cmd(M_Cycle);
		z80_write_block(tmp, 0, 3);
	} else
		z80_bus_cmd(Run);

	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
	34
a2907f2e L	35	static void z80_load_mem(int_fast8_t verbosity,
	36	const FLASH unsigned char data[],
	37	const FLASH unsigned long *sections,
	38	const FLASH unsigned long address[],
	39	const FLASH unsigned long length_of_sections[])
534e1dfc	40	{
a2907f2e L	41	uint32_t sec_base = 0;
	42
	43	if (verbosity > 1)
	44	printf_P(PSTR("Loading Z180 memory... \n"));
	45
	46	for (unsigned sec = 0; sec < *sections; sec++) {
	47	if (verbosity > 0) {
	48	printf_P(PSTR(" From: 0x%.5lX to: 0x%.5lX (%5li bytes)\n"),
	49	address[sec],
	50	address[sec]+length_of_sections[sec] - 1,
	51	length_of_sections[sec]);
	52	}
	53
	54	z80_write_block_P((const FLASH unsigned char ) &data[sec_base], / src */
	55	address[sec], /* dest */
	56	length_of_sections[sec]); /* len */
	57	sec_base += length_of_sections[sec];
534e1dfc L	58	}
	59	}
	60
5e8ac5e0	61	command_ret_t do_loadf(cmd_tbl_t cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc UNUSED, char const argv[] UNUSED)
534e1dfc	62	{
e9d96859 L	63	if (z80_bus_state() & ZST_RUNNING)
	64	cmd_error(CMD_RET_FAILURE, ERUNNING, NULL);
	65	z80_bus_request_or_exit();
a2907f2e L	66	z80_load_mem(2, hdrom,
	67	&hdrom_sections,
	68	hdrom_address,
	69	hdrom_length_of_sections);
	70
612a6965	71	z80_bus_cmd(Release);
6035a17b	72
d0581f88	73	return CMD_RET_SUCCESS;
534e1dfc L	74	}
	75
	76
a2907f2e L	77	void print_vars(char *title)
	78	{
	79	uint8_t buf[5];
	80	zstate_t state = z80_bus_state();
	81
	82	if((state & ZST_ACQUIRED) == 0)
	83	z80_bus_cmd(Request);
	84
	85	z80_read_block(buf, 9, sizeof buf);
	86
	87	if((state & ZST_ACQUIRED) == 0)
	88	z80_bus_cmd(Release);
	89
	90	printf_P(PSTR("%s: stage: %d, flag: 0x%.02x, result: %d, IDE stat/error: 0x%.02x/0x%.02x\n"),
	91	title, buf[0], buf[1], buf[2], buf[3], buf[4]);
	92	}
	93
	94
	95	/*
	96	* bootcf [options]
	97	*
	98	* -a address (100h)
	99	* -s start sector (0)
	100	* -c sector count (7)
	101	* -i Partition id (52)
	102	* -n load only
	103	* -t timeout (10000)
	104	* -v verbose
	105	*/
	106
5e8ac5e0	107	command_ret_t do_bootcf(cmd_tbl_t cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char const argv[])
a2907f2e L	108	{
	109	struct {
	110	uint8_t jr[2];
	111	uint16_t loadaddr;
	112	uint8_t sec_start;
	113	uint8_t sec_cnt;
	114	uint8_t part_id;
	115	uint16_t timeout;
16af58ea	116	uint8_t stages;
a2907f2e L	117	} boot_param;
	118
	119	struct {
16af58ea	120	uint8_t stages;
a2907f2e L	121	uint8_t done;
	122	uint8_t result;
	123	uint8_t ide_stat;
	124	uint8_t ide_error;
	125	} boot_res;
	126
	127	int_fast8_t verbosity = 0;
16af58ea	128	uint8_t default_stages;
a2907f2e	129	uint32_t val;
5e8ac5e0	130	ERRNUM res = ESUCCESS;
a2907f2e L	131
	132	/* get default values */
	133	memcpy_P(&boot_param, cfboot, sizeof boot_param);
16af58ea	134	default_stages = boot_param.stages;
a2907f2e L	135
	136	/* reset getopt() */
	137	optind = 0;
	138
	139	int opt;
	140	while ((opt = getopt(argc, argv, PSTR("vna:s:c:t:i:"))) != -1) {
	141	switch (opt) {
	142	case 'v':
	143	verbosity++;
	144	break;
	145	case 'n':
16af58ea L	146	if (boot_param.stages > 0)
16af58ea L	147	boot_param.stages--;
a2907f2e L	148	break;
a2907f2e L	149	case 'a':
2d914b45	150	val = eval_arg(optarg, NULL);
a2907f2e L	151	if (val < 0x100 \|\| val > 0xFE00) {
	152	printf_P(PSTR("Address out of range: 0x%.4lX\n"), val);
	153	return CMD_RET_FAILURE;
	154	}
	155	boot_param.loadaddr = val;
	156	break;
	157	case 's':
2d914b45	158	val = eval_arg(optarg, NULL);
a2907f2e L	159	if (val > 255) {
	160	printf_P(PSTR("Start sector out of range: 0x%lX\n"), val);
	161	return CMD_RET_FAILURE;
	162	}
	163	boot_param.sec_start = val;
	164	break;
	165	case 'c':
2d914b45	166	val = eval_arg(optarg, NULL);
a2907f2e L	167	if (val > 127) {
	168	printf_P(PSTR("Sector count out of range: 0x%lX\n"), val);
	169	return CMD_RET_FAILURE;
	170	}
	171	boot_param.sec_cnt = val;
	172	break;
	173	case 't':
2d914b45	174	val = eval_arg(optarg, NULL);
a2907f2e L	175	if (val < 0x1 \|\| val > 0xFFFF) {
	176	printf_P(PSTR("Timeout value out of range: 0x%lX\n"), val);
	177	return CMD_RET_FAILURE;
	178	}
16af58ea	179	boot_param.timeout = val;
a2907f2e L	180	break;
a2907f2e L	181	case 'i':
2d914b45	182	val = eval_arg(optarg, NULL);
a2907f2e L	183	if (val < 0x01 \|\| val > 0xFF) {
	184	printf_P(PSTR("Partition id out of range: 0x%lX\n"), val);
	185	return CMD_RET_FAILURE;
	186	}
	187	boot_param.part_id = val;
	188	break;
	189	default: /* '?' */
	190	return CMD_RET_USAGE;
	191	}
	192	}
	193
	194	/* remaining arguments */
	195	argc -= optind;
	196	if (argc) {
	197	my_puts_P(PSTR("Argument error!\n"));
	198	return CMD_RET_USAGE;
	199	}
	200
	201	if ((val = (uint32_t) boot_param.loadaddr + boot_param.sec_cnt * 512) >= 0xFF00) {
	202	printf_P(PSTR("Top address out of range: 0x%.4lX\n"), val);
	203	return CMD_RET_FAILURE;
	204	}
	205
e9d96859 L	206	if (z80_bus_state() & ZST_RUNNING)
	207	cmd_error(CMD_RET_FAILURE, ERUNNING, NULL);
	208	z80_bus_request_or_exit();
a2907f2e L	209	z80_load_mem(verbosity, cfboot,
	210	&cfboot_sections,
	211	cfboot_address,
	212	cfboot_length_of_sections);
	213
	214	z80_write_block((const uint8_t *) &boot_param,
	215	cfboot_address[0], sizeof boot_param);
	216	z80_bus_cmd(Release);
	217
16af58ea	218	if (boot_param.stages == 0) {
a2907f2e L	219	printf_P(PSTR("Bootloader loaded at: 0x%.4X\n"), (uint16_t) cfboot_address[0]);
	220	} else {
	221	printf_P(PSTR("Executing %d of %d Bootloader stages...\n"),
16af58ea	222	boot_param.stages, default_stages);
a2907f2e L	223
	224	z80_bus_cmd(Run);
	225	z80_bus_cmd(Release);
	226
	227	clear_ctrlc(); /* forget any previous Control C */
	228	for (boot_res.done = 0; boot_res.done != 0xFF;) {
	229	_delay_ms(8);
	230	/* check for ctrl-c to abort... */
	231	if (had_ctrlc() \|\| ctrlc()) {
	232	break;
	233	}
	234	z80_bus_cmd(Request);
	235	z80_read_block((uint8_t *) &boot_res,
	236	cfboot_address[0]+sizeof boot_param - 1, sizeof boot_res);
	237	z80_bus_cmd(Release);
	238	}
	239
	240	if (boot_res.done != 0xFF) {
	241	z80_bus_cmd(Reset);
	242	my_puts_P(PSTR("Abort\n"));
	243	} else {
16af58ea L	244	if (boot_param.stages == default_stages &&
	245	boot_res.stages == 0 &&
	246	boot_res.result == 0) {
a2907f2e L	247	my_puts_P(PSTR("Booting...\n"));
	248	} else {
	249	z80_bus_cmd(Reset);
16af58ea	250	boot_res.stages++;
a2907f2e	251	printf_P(PSTR("Bootloader stopped at stage %d, result: %d, IDE stat/error: 0x%.02x/0x%.02x\n"),
16af58ea	252	boot_param.stages - boot_res.stages,
a2907f2e L	253	boot_res.result, boot_res.ide_stat, boot_res.ide_error);
	254	}
	255	}
	256	}
	257
	258	return CMD_RET_SUCCESS;
	259	}
	260
5e8ac5e0	261	command_ret_t do_busreq_pulse(cmd_tbl_t cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char const argv[])
534e1dfc	262	{
f338df2a	263	uint16_t count=1;
534e1dfc	264
6035a17b	265	if (!(z80_bus_state() & ZST_RUNNING)) {
f338df2a	266	printf_P(PSTR("## CPU is not running!\n"));
d0581f88	267	return CMD_RET_FAILURE;
534e1dfc L	268	}
534e1dfc L	269
f338df2a	270	if (argc > 1)
2d914b45	271	count = (uint16_t) eval_arg(argv[1], NULL);
f338df2a	272
62f624d3	273	z80_bus_cmd(Request);
f338df2a	274	while (count--)
62f624d3	275	z80_bus_cmd(M_Cycle);
534e1dfc	276
d0581f88	277	return CMD_RET_SUCCESS;
f338df2a L	278	}
	279
	280
5e8ac5e0	281	command_ret_t do_go(cmd_tbl_t cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char const argv[])
f338df2a L	282	{
	283	uint32_t addr;
	284
f338df2a L	285	if (argc < 2)
f338df2a L	286	return CMD_RET_USAGE;
2d914b45	287	addr = eval_arg(argv[1], NULL);
f338df2a	288	if (addr >= (1UL<<16)) {
534e1dfc L	289	printf_P(PSTR("## Startaddress 0x%05lx too high.\n"
	290	" (Out of logical address space (0x00000-0x0ffff))\n"),
	291	addr);
d0581f88	292	return CMD_RET_FAILURE;
6035a17b	293	}
f338df2a	294
6035a17b	295	if (z80_bus_state() & ZST_RUNNING) {
5e8ac5e0	296	printf_P(PSTR("## CPU already running!\n"));
d0581f88	297	return CMD_RET_FAILURE;
534e1dfc L	298	}
534e1dfc L	299
f338df2a L	300	printf_P(PSTR("## Starting application at 0x%04lx ...\n"), addr);
	301
	302	if (addr != 0) {
	303	uint8_t tmp[3];
6035a17b	304
62f624d3	305	z80_bus_cmd(Request);
19a463f4	306	z80_read_block (tmp, 0, 3);
f338df2a L	307	z80_write(0, 0xc3);
	308	z80_write(1, addr);
	309	z80_write(2, (addr >> 8));
	310
62f624d3 L	311	z80_bus_cmd(Run);
	312	z80_bus_cmd(M_Cycle);
	313	z80_bus_cmd(M_Cycle);
19a463f4	314	z80_write_block(tmp, 0, 3);
f338df2a	315	} else
62f624d3	316	z80_bus_cmd(Run);
6035a17b	317
62f624d3	318	z80_bus_cmd(Release);
f338df2a	319
d0581f88	320	return CMD_RET_SUCCESS;
534e1dfc L	321	}
534e1dfc L	322
8a7decea L	323	static
	324	void reset_cpu(bus_cmd_t mode)
	325	{
	326	restart_z180_serv();
	327	z80_bus_cmd(mode);
	328	}
	329
	330
5e8ac5e0	331	command_ret_t do_reset(cmd_tbl_t cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc UNUSED, char const argv[] UNUSED)
534e1dfc	332	{
612a6965	333	printf_P(PSTR("CPU now in reset state.\n"));
534e1dfc	334
8a7decea	335	reset_cpu(Reset);
d0581f88	336	return CMD_RET_SUCCESS;
534e1dfc L	337	}
534e1dfc L	338
5e8ac5e0	339	command_ret_t do_restart(cmd_tbl_t cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc UNUSED, char const argv[] UNUSED)
534e1dfc	340	{
8a7decea	341	reset_cpu(Restart);
534e1dfc	342
d0581f88	343	return CMD_RET_SUCCESS;
534e1dfc L	344	}
534e1dfc L	345
8a7decea L	346	static
	347	void print_con_usage(char esc)
	348	{ printf_P(PSTR("\n"
	349	"------------------------------------------------\n"
	350	" ?,H - This Help\n"
8a7decea	351	" Q,X - Return to command line\n"
b08e079d L	352	" R - Reset (Restart) CPU\n"
b08e079d L	353	" : - Execute monitor command\n"
612a6965 L	354	" \\ - code input:\n"
	355	" \\nnn 3 decimal digits character code\n"
	356	" \\Xhh 2 hexadecimal digits character code\n"
	357	" ^%c - (Escape char) Type again to send itself\n"
8a7decea L	358	"key>"
	359	), esc + 0x40);
	360	}
89adce76	361
5e8ac5e0	362	command_ret_t do_console(cmd_tbl_t cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc UNUSED, char const argv[] UNUSED)
89adce76 L	363	{
89adce76 L	364	int ch;
8a7decea	365	uint8_t pending;
8a7decea L	366	uint8_t code = 0;
8a7decea L	367	uint8_t state = 0;
612a6965	368	char esc_char = (char) getenv_ulong(PSTR(ENV_ESC_CHAR), 16, CONFIG_ESC_CHAR);
ea6971b8	369
b08e079d L	370	printf_P(PSTR("Connecting to CPU. Escape character is '^%c'.\n"),
b08e079d L	371	esc_char + 0x40);
89adce76 L	372
	373	while (1) {
	374
8a7decea	375	ATOMIC_BLOCK(ATOMIC_FORCEON) {
89adce76 L	376	pending = (Stat & S_CON_PENDING) != 0;
	377	Stat &= ~S_CON_PENDING;
	378	}
3ad4143b L	379	if (pending) {
	380	uint8_t count = 100;
	381	while ((ch = z80_memfifo_getc(fifo_conout)) >= 0 && --count)
89adce76	382	putchar(ch);
3ad4143b	383	}
89adce76 L	384
	385	if ((ch = my_getchar(0)) >= 0) {
	386	switch (state) {
	387	case 0:
612a6965	388	if (ch == esc_char) {
89adce76 L	389	state = 1;
	390	/* TODO: Timer starten */
	391	} else {
	392	z80_memfifo_putc(fifo_conin, ch);
ea6971b8	393	}
89adce76	394	break;
8a7decea	395	case 2:
5e8ac5e0	396	my_puts_P(PSTR("\n"
8a7decea	397	"------------------------------------------------\n"));
89adce76	398	case 1:
8a7decea L	399	state = 0;
8a7decea L	400	switch (toupper(ch)) {
89adce76	401
8a7decea L	402	case '?':
8a7decea L	403	case 'H':
612a6965	404	print_con_usage(esc_char);
8a7decea	405	state = 2;
89adce76 L	406	break;
89adce76 L	407
8a7decea L	408	case 'R':
8a7decea L	409	reset_cpu(Restart);
89adce76 L	410	break;
89adce76 L	411
8a7decea	412	case 'X':
89adce76	413	case 'Q':
5e8ac5e0	414	putchar('\n');
89adce76 L	415	goto quit;
	416	break;
	417
b08e079d L	418	case ':':
b08e079d L	419	putchar('\n');
8ed66016	420	int cmdlen = cli_readline(PSTR(": "), 1);
b08e079d L	421	if (cmdlen > 0)
	422	run_command(console_buffer, 0);
	423	break;
	424
8a7decea L	425	case '\\':
	426	code = 0;
	427	state = 3;
	428	break;
	429
8a7decea	430	default:
612a6965 L	431	if (ch == esc_char)
612a6965 L	432	z80_memfifo_putc(fifo_conin, ch);
8a7decea L	433	break;
	434	}
	435	break;
	436	case 3:
	437	if (toupper(ch) == 'X') {
	438	state = 6;
	439	break;
	440	}
	441	/* fall thru */
	442	case 4:
	443	case 5:
	444	if (isdigit(ch)) {
	445	code = code * 10 + ch - '0';
	446	state++;
b08e079d L	447	} else {
	448	if (state > 3)
	449	z80_memfifo_putc(fifo_conin, code);
	450	z80_memfifo_putc(fifo_conin, ch);
	451	state = 0;
8a7decea L	452	}
	453	if (state > 5) {
	454	z80_memfifo_putc(fifo_conin, code);
	455	state = 0;
	456	}
	457	break;
	458	case 6:
	459	case 7:
	460	if (isxdigit(ch)) {
	461	ch = toupper(ch);
	462	if (ch >= 'A')
	463	ch -= 'A' - 10;
	464	code = code * 16 + ch - '0';
	465	state++;
b08e079d L	466	}else {
	467	if (state > 6)
	468	z80_memfifo_putc(fifo_conin, code);
	469	z80_memfifo_putc(fifo_conin, ch);
	470	state = 0;
8a7decea L	471	}
	472	if (state > 7) {
	473	z80_memfifo_putc(fifo_conin, code);
	474	state = 0;
89adce76	475	}
89adce76 L	476	break;
	477	}
	478	}
89adce76 L	479	}
89adce76 L	480	quit:
89adce76 L	481	return CMD_RET_SUCCESS;
89adce76 L	482	}