FreeCalypso > hg > freecalypso-tools
view target-utils/libcommon/cmd_memdump_machine.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 | 9214118ae941 |
children |
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/* * This is a machine-oriented memory dump command. The output is in the * form of S3 records. */ #include <sys/types.h> #include "types.h" void cmd_memdump_machine(argbulk) char *argbulk; { char *argv[3]; u_long start, length; u_long addr; u_char srbuf[0x86], cksum; int i; if (parse_args(argbulk, 2, 2, argv, 0) < 0) return; if (parse_hexarg(argv[0], 8, &start) < 0) { printf("ERROR: arg1 must be a valid 32-bit hex address\n"); return; } if (parse_hexarg(argv[1], 8, &length) < 0) { printf("ERROR: arg2 must be a valid 32-bit hex value (length)\n"); return; } if (start & 0x7F || length & 0x7F) { printf("ERROR: implementation limit: 128-byte alignment required\n"); return; } srbuf[0] = 0x85; for (addr = start; addr < start + length; addr += 0x80) { srbuf[1] = addr >> 24; srbuf[2] = addr >> 16; srbuf[3] = addr >> 8; srbuf[4] = addr; memcpy(srbuf + 5, addr, 0x80); cksum = 0; for (i = 0; i < 0x85; i++) cksum += srbuf[i]; srbuf[i] = ~cksum; putchar('S'); putchar('3'); for (i = 0; i < 0x86; i++) printf("%02X", srbuf[i]); putchar('\n'); } }