view target-utils/pln-ppb-test/read_id.c @ 998:fb7442e3d430

CHANGES: mention flash write protection support
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 04 Dec 2023 02:17:54 +0000
parents 5a6019ed7e72
children
line wrap: on
line source

/*
 * read-id (Autoselect) command
 */

#include <sys/types.h>
#include "types.h"

void
cmd_read_id(argbulk)
	char *argbulk;
{
	char *argv[2];
	u_long addr;

	if (parse_args(argbulk, 1, 1, argv, 0) < 0)
		return;
	if (parse_hexarg(argv[0], 8, &addr) < 0) {
		printf("ERROR: argument must be a valid 32-bit hex address\n");
		return;
	}
	if (addr & 0xFFFF) {
		printf("ERROR: address is not on 64 KiB boundary\n");
		return;
	}
	*(volatile u16 *)(addr + 0xAAA) = 0xAA;
	*(volatile u16 *)(addr + 0x554) = 0x55;
	*(volatile u16 *)(addr + 0xAAA) = 0x90;
}