/*
 * Copyright © 2011 Keith Packard <keithp@keithp.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
 */

#include "ao.h"
#include <ao_exti.h>
#include <ao_boot.h>
#include <ao_flash_stm.h>

void
ao_panic(uint8_t reason)
{
	for (;;);
}

void
ao_application(void)
{
	ao_boot_reboot(AO_BOOT_APPLICATION_BASE);
}

static uint32_t
ao_cmd_hex32(void)
{
	__pdata uint8_t	r = ao_cmd_lex_error;
	int8_t	n;
	uint32_t v = 0;

	ao_cmd_white();
	for(;;) {
		n = ao_cmd_hexchar(ao_cmd_lex_c);
		if (n < 0)
			break;
		v = (v << 4) | n;
		r = ao_cmd_success;
		ao_cmd_lex();
	}
	if (r != ao_cmd_success)
		ao_cmd_status = r;
	return v;
}

void
ao_block_erase(void)
{
	uint32_t	addr = ao_cmd_hex32();
	uint32_t	*p = (uint32_t *) addr;

	ao_flash_erase_page(p);
}

void
ao_block_write(void)
{
	uint32_t	addr = ao_cmd_hex32();
	uint32_t	*p = (uint32_t *) addr;
	union {
		uint8_t		data8[256];
		uint32_t	data32[64];
	} u;
	uint16_t	i;

	if (addr < 0x08002000 || 0x08200000 <= addr) {
		ao_put_string("Invalid address\n");
		return;
	}
	for (i = 0; i < 256; i++)
		u.data8[i] = getchar();
	ao_flash_page(p, u.data32);
}

static void
puthex(uint8_t c)
{
	c &= 0xf;
	if (c < 10)
		c += '0';
	else
		c += 'a' - 10;
	putchar (c);
}

void
ao_block_read(void)
{
	uint32_t	addr = ao_cmd_hex32();
	uint8_t		*p = (uint8_t *) addr;
	uint16_t	i;
	uint8_t		c;

	for (i = 0; i < 256; i++) {
		c = *p++;
		(*ao_stdios[ao_cur_stdio].putchar)(c);
	}
}

void
ao_block_read_hex(void)
{
	uint32_t	addr = ao_cmd_hex32();
	uint8_t		*p = (uint8_t *) addr;
	uint16_t	i;
	uint8_t		c;

	for (i = 0; i < 256; i++) {
		c = *p++;
		puthex(c>>4);
		puthex(c);
		if ((i & 0xf) == 0xf)
			putchar('\n');
	}
}

static void
ao_show_version(void)
{
	puts("altos-loader");
	ao_put_string("manufacturer     "); puts(ao_manufacturer);
	ao_put_string("product          "); puts(ao_product);
	ao_put_string("software-version "); puts(ao_version);
}

__code struct ao_cmds ao_flash_cmds[] = {
	{ ao_show_version, "v\0Version" },
	{ ao_application, "a\0Switch to application" },
	{ ao_block_erase, "X <addr>\0Erase block." },
	{ ao_block_write, "W <addr>\0Write block. 256 binary bytes follow newline" },
	{ ao_block_read, "R <addr>\0Read block. Returns 256 binary bytes" },
	{ ao_block_read_hex, "H <addr>\0Hex read block. Returns 256 bytes in hex" },
	{ 0, NULL },
};


int
main(void)
{
	ao_clock_init();

	ao_task_init();

	ao_timer_init();
//	ao_dma_init();
	ao_cmd_init();
//	ao_exti_init();
	ao_usb_init();

	ao_cmd_register(&ao_flash_cmds[0]);
	ao_start_scheduler();
	return 0;
}