view target-utils/pirexplore/flashid.c @ 497:74610c4f10f7

target-utils: added 10 ms delay at the end of abb_power_off() The deosmification of the ABB access code (replacement of osmo_delay_ms() bogus delays with correctly-timed ones, which are significantly shorter) had one annoying side effect: when executing the poweroff command from any of the programs, one last '=' prompt character was being sent (and received by the x86 host) as the Calypso board powers off. With delays being shorter now, the abb_power_off() function was returning and the standalone program's main loop was printing its prompt before the Iota chip fully executed the switch-off sequence! I thought about inserting an endless tight loop at the end of the abb_power_off() function, but the implemented solution of a 10 ms delay is a little nicer IMO because if the DEVOFF operation doesn't happen for some reason in a manual hacking scenario, there won't be an artificial blocker in the form of a tight loop keeping us from further poking around.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 25 May 2019 20:44:05 +0000
parents e7502631a0f9
children
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#include "types.h"

void
cmd_flashid(argbulk)
	char *argbulk;
{
	char *argv[2];
	u32 base_addr;

	if (parse_args(argbulk, 1, 1, argv, 0) < 0)
		return;
	if (argv[0][0] == '1' && !argv[0][1])
		base_addr = 0x03000000;
	else if (argv[0][0] == '2' && !argv[0][1])
		base_addr = 0x02000000;
	else {
		printf("ERROR: argument must be 1 or 2\n");
		return;
	}
	printf("Base addr: %08X\n", base_addr);
	*(volatile u16 *)(base_addr + 0xAAA) = 0xAA;
	*(volatile u16 *)(base_addr + 0x554) = 0x55;
	*(volatile u16 *)(base_addr + 0xAAA) = 0x90;
	printf("offset 00: %04X\n", *(volatile u16 *)(base_addr + 0x00));
	printf("offset 02: %04X\n", *(volatile u16 *)(base_addr + 0x02));
	printf("offset 1C: %04X\n", *(volatile u16 *)(base_addr + 0x1C));
	printf("offset 1E: %04X\n", *(volatile u16 *)(base_addr + 0x1E));
	*(volatile u16 *)(base_addr + 0xAAA) = 0xF0;
}