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

/*
 * (C) Copyright 2015 Leo C. <erbl259-lmu@yahoo.de>
 *
 * SPDX-License-Identifier:	GPL-2.0
 */

#include "cmd_loadihex.h"

#include "con-utils.h"
#include "z80-if.h"
#include "debug.h"


typedef enum {
	IHX_OK,
	IHX_BROKEN,
	IHX_CHKSUMERR
} ihx_rstat_t;

typedef struct {
	ihx_rstat_t status;
	int8_t type;
	uint8_t len;
	uint16_t address;
	uint8_t data[256];
} ihex_t;


static int get_hexdigit(void)
{
	int c;
	c = toupper(my_getchar(1));
	if (isxdigit(c)) {
		c -= '0';
		if (c > 9)
			c -= ('A' - '0' - 10);
		return c;
	} else
		return -1;
}

static int get_hexbyte(void)
{
	uint8_t i,j;

	if ((i = (uint8_t) get_hexdigit()) < 0x10)
		if ((j = (uint8_t) get_hexdigit()) < 0x10) {
			return (i<<4) + j;
		}

	return -1;
}


static int ihex_get_record(ihex_t *rec)
{
	int c;
	uint8_t sum;

	rec->status = IHX_BROKEN;
	rec->len = 0;
	rec->type = 0xff;

	while ((c = my_getchar(0)) != ':') {
		if (c == 0x03)
			return -1;					/* Control-C */
		if (c == 0x04) {
			rec->status = IHX_OK;
			return 0;					/*Control-D, EOF */
		}
	}

	if ((c = get_hexbyte()) < 0)		/* Start code */
			return -1;
	sum = c;
	rec->len = c;
	if ((c = get_hexbyte()) < 0)		/* Byte Count */
			return -1;
	sum += c;
	rec->address = c * 256;
	if ((c = get_hexbyte()) < 0)		/* Address */
			return -1;
	sum += c;
	rec->address += c;
	if ((c = get_hexbyte()) < 0)		/* Record type */
		return -1;
	sum += c;
	rec->type = c;

	if (rec->len) {						/* Record Data */
		uint8_t n;

		for (n = 0; n < rec->len; n++) {
			if ((c = get_hexbyte()) < 0)
				break;
			sum += c;
			rec->data[n] = c;
		}

		if (n < rec->len) {
			return -1;
		}
	}

	c = get_hexbyte();				/* Check sum */

	if (c >= 0) {
		sum += c;
		if (sum == 0)
			rec->status = IHX_OK;
		else
			rec->status = IHX_CHKSUMERR;
	}

	return rec->len;
}


command_ret_t do_loadihex(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char * const argv[])
{
	long offset = 0;
	uint32_t base_address = 0;
	uint32_t address_high = 0;
	uint32_t address_max;
	uint32_t address_low;
	bool firstrec = true;
	ihex_t rec;

	if (argc > 1)
		offset = strtol(argv[1], NULL, 16);

	int32_t ram = z80_memsize_detect();
	if (ram < 0)
		cmd_error(CMD_RET_FAILURE, (ERRNUM) -ram, NULL);

	address_max = ram;
	address_low = address_max;

	my_puts_P(PSTR("Waiting for Intel Hex Records...\n"));

	while (ihex_get_record(&rec) > 0 &&
				rec.status == IHX_OK &&
				rec.type != 1 ) {

		switch (rec.type) {
		case 0: /* Data record */
			if (firstrec) {
				my_puts_P(PSTR("Loading: 0x....."));
				firstrec = false;
			}
			if (rec.len) {
				uint32_t addr = base_address + rec.address + offset;
				if (addr < address_low)
					address_low = addr;
				if (addr+rec.len > address_high)
					address_high = addr + rec.len;

//				debug("low: 0x%.5lX, high: 0x%.5lX, max: 0x%.5lX, addr: 0x%.5lX, len: %d\n",
//					address_low, address_high, address_max, addr, rec.len);
				printf_P(PSTR("\b\b\b\b\b%.5lX"), addr);
				if (addr < address_max) {
					uint32_t tmplen = address_max - addr;
					if (rec.len > tmplen)
						rec.len = tmplen;

					z80_bus_request_or_exit();
					z80_write_block(rec.data,		/* src */
							addr,					/* dest */
							rec.len);				/* len */
					z80_bus_cmd(Release);
				}
			}
			break;

#if 0
		case 1: /* EOF record */
			break;
#endif
		case 2: /* Extended Segment Address Record */
			base_address = (uint32_t)((rec.data[0] << 8) + rec.data[1]) << 4;
			break;

		case 4: /* Extended Linear Address Record */
			base_address = (uint32_t)((rec.data[0] << 8) + rec.data[1]) << 16;
			break;

		case 3: /* Start Segment Address Record (ignored)*/
		case 5: /* Start Linear Address Record (ignored)*/
			break;

		}
	}

	if (rec.status != IHX_OK)
		my_puts_P(PSTR("Broken Hex Record or loading interrupted!\n"));

	for (uint_fast8_t i=0; i<100; ++i) {
		/* flush input buffer */
		while (my_getchar(0) > 0)
			;
		udelay(1000);
	}

	my_puts_P(PSTR("\nData loaded: "));
	if (address_low >= MIN(address_high, address_max))
		my_puts_P(PSTR("None.\n"));
	else
		printf_P(PSTR("low: 0x%.5lX high: 0x%.5lX\n"), address_low,
				MIN(address_high, address_max) - 1);

	if (address_high > address_max)
		printf_P(PSTR("Data above highest RAM address "
			"(in range 0x%.5lX - 0x%.5lX) ignored!\n"), address_max, address_high - 1);

	return rec.status == IHX_OK ? CMD_RET_SUCCESS : CMD_RET_FAILURE;
}
Commit	Line	Data
179bc609 L	1	/*
	2	* (C) Copyright 2015 Leo C. <erbl259-lmu@yahoo.de>
	3	*
fcf1d5b3	4	* SPDX-License-Identifier: GPL-2.0
179bc609 L	5	*/
179bc609 L	6
7eecbdac	7	#include "cmd_loadihex.h"
179bc609	8
179bc609 L	9	#include "con-utils.h"
179bc609 L	10	#include "z80-if.h"
d264541a	11	#include "debug.h"
179bc609 L	12
	13
	14	typedef enum {
	15	IHX_OK,
	16	IHX_BROKEN,
	17	IHX_CHKSUMERR
	18	} ihx_rstat_t;
	19
	20	typedef struct {
	21	ihx_rstat_t status;
	22	int8_t type;
	23	uint8_t len;
	24	uint16_t address;
5480dc65	25	uint8_t data[256];
179bc609 L	26	} ihex_t;
	27
	28
1633073f L	29	static int get_hexdigit(void)
1633073f L	30	{
179bc609 L	31	int c;
	32	c = toupper(my_getchar(1));
	33	if (isxdigit(c)) {
	34	c -= '0';
	35	if (c > 9)
	36	c -= ('A' - '0' - 10);
	37	return c;
	38	} else
	39	return -1;
	40	}
	41
1633073f L	42	static int get_hexbyte(void)
1633073f L	43	{
179bc609 L	44	uint8_t i,j;
	45
	46	if ((i = (uint8_t) get_hexdigit()) < 0x10)
	47	if ((j = (uint8_t) get_hexdigit()) < 0x10) {
	48	return (i<<4) + j;
	49	}
	50
	51	return -1;
	52	}
	53
5480dc65	54
1633073f L	55	static int ihex_get_record(ihex_t *rec)
1633073f L	56	{
5480dc65 L	57	int c;
	58	uint8_t sum;
	59
	60	rec->status = IHX_BROKEN;
bf587043 L	61	rec->len = 0;
bf587043 L	62	rec->type = 0xff;
5480dc65	63
bf587043	64	while ((c = my_getchar(0)) != ':') {
5480dc65	65	if (c == 0x03)
bf587043 L	66	return -1; /* Control-C */
	67	if (c == 0x04) {
	68	rec->status = IHX_OK;
	69	return 0; /Control-D, EOF /
	70	}
	71	}
5480dc65 L	72
	73	if ((c = get_hexbyte()) < 0) /* Start code */
	74	return -1;
	75	sum = c;
	76	rec->len = c;
	77	if ((c = get_hexbyte()) < 0) /* Byte Count */
	78	return -1;
	79	sum += c;
	80	rec->address = c * 256;
	81	if ((c = get_hexbyte()) < 0) /* Address */
	82	return -1;
	83	sum += c;
	84	rec->address += c;
	85	if ((c = get_hexbyte()) < 0) /* Record type */
	86	return -1;
	87	sum += c;
	88	rec->type = c;
	89
	90	if (rec->len) { /* Record Data */
	91	uint8_t n;
	92
	93	for (n = 0; n < rec->len; n++) {
	94	if ((c = get_hexbyte()) < 0)
	95	break;
	96	sum += c;
	97	rec->data[n] = c;
	98	}
	99
	100	if (n < rec->len) {
	101	return -1;
	102	}
	103	}
	104
	105	c = get_hexbyte(); /* Check sum */
	106
	107	if (c >= 0) {
	108	sum += c;
	109	if (sum == 0)
	110	rec->status = IHX_OK;
	111	else
	112	rec->status = IHX_CHKSUMERR;
	113	}
	114
	115	return rec->len;
	116	}
	117
179bc609	118
1633073f	119	command_ret_t do_loadihex(cmd_tbl_t cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc, char const argv[])
179bc609 L	120	{
	121	long offset = 0;
	122	uint32_t base_address = 0;
179bc609	123	uint32_t address_high = 0;
1e5609bf L	124	uint32_t address_max;
1e5609bf L	125	uint32_t address_low;
bf587043	126	bool firstrec = true;
1633073f	127	ihex_t rec;
5480dc65	128
179bc609 L	129	if (argc > 1)
	130	offset = strtol(argv[1], NULL, 16);
	131
1e5609bf L	132	int32_t ram = z80_memsize_detect();
	133	if (ram < 0)
	134	cmd_error(CMD_RET_FAILURE, (ERRNUM) -ram, NULL);
	135
	136	address_max = ram;
	137	address_low = address_max;
	138
1633073f	139	my_puts_P(PSTR("Waiting for Intel Hex Records...\n"));
bf587043	140
5480dc65 L	141	while (ihex_get_record(&rec) > 0 &&
	142	rec.status == IHX_OK &&
	143	rec.type != 1 ) {
	144
	145	switch (rec.type) {
	146	case 0: /* Data record */
bf587043	147	if (firstrec) {
1633073f	148	my_puts_P(PSTR("Loading: 0x....."));
bf587043 L	149	firstrec = false;
bf587043 L	150	}
5480dc65 L	151	if (rec.len) {
	152	uint32_t addr = base_address + rec.address + offset;
	153	if (addr < address_low)
	154	address_low = addr;
	155	if (addr+rec.len > address_high)
	156	address_high = addr + rec.len;
179bc609	157
d264541a L	158	// debug("low: 0x%.5lX, high: 0x%.5lX, max: 0x%.5lX, addr: 0x%.5lX, len: %d\n",
d264541a L	159	// address_low, address_high, address_max, addr, rec.len);
bf587043	160	printf_P(PSTR("\b\b\b\b\b%.5lX"), addr);
5480dc65 L	161	if (addr < address_max) {
	162	uint32_t tmplen = address_max - addr;
	163	if (rec.len > tmplen)
	164	rec.len = tmplen;
	165
e9d96859	166	z80_bus_request_or_exit();
179bc609 L	167	z80_write_block(rec.data, /* src */
	168	addr, /* dest */
	169	rec.len); /* len */
	170	z80_bus_cmd(Release);
	171	}
179bc609	172	}
5480dc65	173	break;
179bc609	174
5480dc65 L	175	#if 0
	176	case 1: /* EOF record */
	177	break;
	178	#endif
	179	case 2: /* Extended Segment Address Record */
d264541a	180	base_address = (uint32_t)((rec.data[0] << 8) + rec.data[1]) << 4;
5480dc65	181	break;
ae017d4c	182
5480dc65 L	183	case 4: /* Extended Linear Address Record */
	184	base_address = (uint32_t)((rec.data[0] << 8) + rec.data[1]) << 16;
	185	break;
ae017d4c	186
5480dc65 L	187	case 3: /* Start Segment Address Record (ignored)*/
	188	case 5: /* Start Linear Address Record (ignored)*/
	189	break;
	190
	191	}
179bc609 L	192	}
179bc609 L	193
1633073f L	194	if (rec.status != IHX_OK)
1633073f L	195	my_puts_P(PSTR("Broken Hex Record or loading interrupted!\n"));
4cbc8d3e	196
bf587043 L	197	for (uint_fast8_t i=0; i<100; ++i) {
	198	/* flush input buffer */
	199	while (my_getchar(0) > 0)
	200	;
	201	udelay(1000);
	202	}
	203
1633073f	204	my_puts_P(PSTR("\nData loaded: "));
d264541a	205	if (address_low >= MIN(address_high, address_max))
1633073f	206	my_puts_P(PSTR("None.\n"));
179bc609	207	else
5480dc65	208	printf_P(PSTR("low: 0x%.5lX high: 0x%.5lX\n"), address_low,
d264541a	209	MIN(address_high, address_max) - 1);
5480dc65 L	210
	211	if (address_high > address_max)
	212	printf_P(PSTR("Data above highest RAM address "
d264541a	213	"(in range 0x%.5lX - 0x%.5lX) ignored!\n"), address_max, address_high - 1);
179bc609	214
1633073f	215	return rec.status == IHX_OK ? CMD_RET_SUCCESS : CMD_RET_FAILURE;
179bc609	216	}