view target-utils/libcommon/cmd_w8.c @ 416:30f6d1c32c6f

doc/Flash-boot-defect article removed (no longer relevant) This article is no longer relevant because the issue in question only affected one (1) defective FCDEV3B board which was not and never will be sold.
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 26 Oct 2018 07:11:08 +0000
parents e7502631a0f9
children
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/*
 * w8 hexaddr xx -- write an 8-bit register or memory location
 */

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

void
cmd_w8(argbulk)
	char *argbulk;
{
	char *argv[3];
	u_long addr, data;

	if (parse_args(argbulk, 2, 2, argv, 0) < 0)
		return;
	if (parse_hexarg(argv[0], 8, &addr) < 0) {
		printf("ERROR: arg1 must be a valid 32-bit hex address\n");
		return;
	}
	if (parse_hexarg(argv[1], 2, &data) < 0) {
		printf("ERROR: arg2 must be a valid 8-bit hex value\n");
		return;
	}
	*(volatile u8 *)addr = data;
}