view target-utils/c139explore/main.c @ 926:6a0aa8d36d06

rvinterf backslash escape: introduce libprint The new helper function library named libprint is meant to replace the badly misnamed libg23, and will soon contain functions for printing all of the same kinds of GPF TST packets that are now handled in libg23. However, we are also moving safe_print_trace() from libasync to this new library, and changing it to emit our new backslash escape format.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 23 May 2023 03:47:46 +0000
parents fc3592a27317
children
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#include "types.h"

#define	DELAY_1MS	6500	/* ARM7 core runs at 26 MHz here, not 52 MHz */

main()
{
	/* delay kludge workaround for defect in fc-compalram */
	wait_ARM_cycles(DELAY_1MS * 30);
	printf("C139 hardware exploration utility running\n");
	/* GPIO init, compatible with both C139 and SE J100 */
	*(volatile u16 *)0xfffe4802 = 0x0002;
	*(volatile u16 *)0xfffe4804 = 0x2A59;
	*(volatile u16 *)0xfffe4806 = 0xFFF3;	/* enable ARMIO clock */
	/* take peripherals out of reset */
	*(volatile u16 *)0xfffffd04 = 0xFFF3;
	abb_init();
	uwire_init();
	for (;;) {
		putchar('=');
		if (command_entry())
			command_dispatch();
	}
}