Information/MIPSelAVR - Revision history

Uzume: /* mc_ctld */ typo

Uzume — Thu, 02 Aug 2007 06:29:18 GMT

mc_ctld: typo

← Older revision		Revision as of 06:29, 2 August 2007
Line 91:		Line 91:
	The communication with the microcontroller is done via ''/dev/ttyS0'', using the commands listed at the beginning of this article or similar, currently not reverse-engineered commands.		The communication with the microcontroller is done via ''/dev/ttyS0'', using the commands listed at the beginning of this article or similar, currently not reverse-engineered commands.

-	'''mc_ctld''''s relatively late position in the LinkStation's boot procedure can sometimes be the cause of [[brick]]ing a LinkStation. If the preceding startup scripts take to long, the watchdog timer can trigger before '''mc_ctld''' was started and had a chance to reset the timer. The LS will then repeatedly reboot while still in the boot procedure. Usually this is not a problem with the standard system configuration, but it is known to become a problem if the startup of additional services had been added before the '''mc_ctld''' startup. Therefore it is highly recommended to add own rc startup scripts after start sequence S95 only.	+	'''mc_ctld''''s relatively late position in the LinkStation's boot procedure can sometimes be the cause of [[brick]]ing a LinkStation. If the preceding startup scripts take too long, the watchdog timer can trigger before '''mc_ctld''' was started and had a chance to reset the timer. The LS will then repeatedly reboot while still in the boot procedure. Usually this is not a problem with the standard system configuration, but it is known to become a problem if the startup of additional services had been added before the '''mc_ctld''' startup. Therefore it is highly recommended to add own rc startup scripts after start sequence S95 only.

	[[Category:LS2]]		[[Category:LS2]]
	[[Category:Hardware]]		[[Category:Hardware]]

165.204.78.1: /* mc_ctld */

165.204.78.1 — Sun, 25 Mar 2007 11:23:07 GMT

mc_ctld

← Older revision		Revision as of 11:23, 25 March 2007
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	== mc_ctld ==		== mc_ctld ==

-	'''mc_ctld''' is the ''microcontroller control [[w:Daemon (computer software)\|daemon]]''. It is a piece of software running on the [[LS2]] under Linux, which communicates with the LS2's Freescale housekeeping microcontroller. It is ~~propritary~~ [[w:Melco\|Buffalo]] software, and Buffalo refuses to release the source code. Therefore, the exact inner working of the software is not known. However, its general function is known, due to extensive analysis which has been done on the [[LS1]] equivalent of that software ([[ppc_uartd]]), and a free replacement has been written [[avr_evtd]].	+	'''mc_ctld''' is the ''microcontroller control [[w:Daemon (computer software)\|daemon]]''. It is a piece of software running on the [[LS2]] under Linux, which communicates with the LS2's Freescale housekeeping microcontroller. It is proprietary [[w:Melco\|Buffalo]] software, and Buffalo refuses to release the source code. Therefore, the exact inner working of the software is not known. However, its general function is known, due to extensive analysis which has been done on the [[LS1]] equivalent of that software ([[ppc_uartd]]), and a free replacement has been written [[avr_evtd]].

	The daemon is started during system boot in run-level 2, and stopped in run-level 0 (system halt) and 6 (system reboot). The startup script is ''/etc/init.d/mc_ctld'', while the daemon binary itself is ''/usr/sbin/mc_ctld''.		The daemon is started during system boot in run-level 2, and stopped in run-level 0 (system halt) and 6 (system reboot). The startup script is ''/etc/init.d/mc_ctld'', while the daemon binary itself is ''/usr/sbin/mc_ctld''.

209.94.50.66: /* mc_ctld */

209.94.50.66 — Sat, 21 Oct 2006 11:44:17 GMT

mc_ctld

← Older revision		Revision as of 11:44, 21 October 2006
Line 81:		Line 81:
	== mc_ctld ==		== mc_ctld ==

-	'''mc_ctld''' is the ''microcontroller control [[w:Daemon (computer software)\|daemon]]''. It is a piece of software running on the [[LS2]] under Linux, which communicates with the LS2's Freescale housekeeping microcontroller. It is propritary [[w:~~Buffalo~~\|Buffalo]] software, and Buffalo refuses to release the source code. Therefore, the exact inner working of the software is not known. However, its general function is known, due to extensive analysis which has been done on the [[LS1]] equivalent of that software ([[ppc_uartd]]), and a free replacement has been written [[avr_evtd]].	+	'''mc_ctld''' is the ''microcontroller control [[w:Daemon (computer software)\|daemon]]''. It is a piece of software running on the [[LS2]] under Linux, which communicates with the LS2's Freescale housekeeping microcontroller. It is propritary [[w:Melco\|Buffalo]] software, and Buffalo refuses to release the source code. Therefore, the exact inner working of the software is not known. However, its general function is known, due to extensive analysis which has been done on the [[LS1]] equivalent of that software ([[ppc_uartd]]), and a free replacement has been written [[avr_evtd]].

	The daemon is started during system boot in run-level 2, and stopped in run-level 0 (system halt) and 6 (system reboot). The startup script is ''/etc/init.d/mc_ctld'', while the daemon binary itself is ''/usr/sbin/mc_ctld''.		The daemon is started during system boot in run-level 2, and stopped in run-level 0 (system halt) and 6 (system reboot). The startup script is ''/etc/init.d/mc_ctld'', while the daemon binary itself is ''/usr/sbin/mc_ctld''.

209.94.50.66: /* mc_ctld */

209.94.50.66 — Sat, 21 Oct 2006 11:43:33 GMT

mc_ctld

← Older revision		Revision as of 11:43, 21 October 2006
Line 81:		Line 81:
	== mc_ctld ==		== mc_ctld ==

-	'''mc_ctld''' is the ''microcontroller control [[w:Daemon (computer software)\|daemon]]''. It is a piece of software running on the [[LS2]] under Linux, which communicates with the LS2's Freescale housekeeping microcontroller. It is propritary [[Buffalo]] software, and Buffalo refuses to release the source code. Therefore, the exact inner working of the software is not known. However, its general function is known, due to extensive analysis which has been done on the [[LS1]] equivalent of that software ([[ppc_uartd]]), and a free replacement has been written [[avr_evtd]].	+	'''mc_ctld''' is the ''microcontroller control [[w:Daemon (computer software)\|daemon]]''. It is a piece of software running on the [[LS2]] under Linux, which communicates with the LS2's Freescale housekeeping microcontroller. It is propritary [[w:Buffalo\|Buffalo]] software, and Buffalo refuses to release the source code. Therefore, the exact inner working of the software is not known. However, its general function is known, due to extensive analysis which has been done on the [[LS1]] equivalent of that software ([[ppc_uartd]]), and a free replacement has been written [[avr_evtd]].

	The daemon is started during system boot in run-level 2, and stopped in run-level 0 (system halt) and 6 (system reboot). The startup script is ''/etc/init.d/mc_ctld'', while the daemon binary itself is ''/usr/sbin/mc_ctld''.		The daemon is started during system boot in run-level 2, and stopped in run-level 0 (system halt) and 6 (system reboot). The startup script is ''/etc/init.d/mc_ctld'', while the daemon binary itself is ''/usr/sbin/mc_ctld''.

89.52.254.203: /* mc_ctld */

89.52.254.203 — Sat, 21 Oct 2006 10:22:34 GMT

mc_ctld

← Older revision		Revision as of 10:22, 21 October 2006
Line 81:		Line 81:
	== mc_ctld ==		== mc_ctld ==

-	'''mc_ctld''' is the ''microcontroller control [[w:Daemon (computer software)\|daemon]]''. It is a piece of software running on the [[LS2]] under Linux, which communicates with the LS2's Freescale housekeeping microcontroller. It is propritary [[Buffalo]] software, and Buffalo refuses to release the source code. Therefore, the exact inner working of the software is not known. However, its general function is known, due to extensive analysis which has been done on the [[LS1]] equivalent of that software ([[ppc_uartd]]).	+	'''mc_ctld''' is the ''microcontroller control [[w:Daemon (computer software)\|daemon]]''. It is a piece of software running on the [[LS2]] under Linux, which communicates with the LS2's Freescale housekeeping microcontroller. It is propritary [[Buffalo]] software, and Buffalo refuses to release the source code. Therefore, the exact inner working of the software is not known. However, its general function is known, due to extensive analysis which has been done on the [[LS1]] equivalent of that software ([[ppc_uartd]]), and a free replacement has been written [[avr_evtd]].

	The daemon is started during system boot in run-level 2, and stopped in run-level 0 (system halt) and 6 (system reboot). The startup script is ''/etc/init.d/mc_ctld'', while the daemon binary itself is ''/usr/sbin/mc_ctld''.		The daemon is started during system boot in run-level 2, and stopped in run-level 0 (system halt) and 6 (system reboot). The startup script is ''/etc/init.d/mc_ctld'', while the daemon binary itself is ''/usr/sbin/mc_ctld''.

89.52.254.203 at 10:14, 21 October 2006

89.52.254.203 — Sat, 21 Oct 2006 10:14:35 GMT

← Older revision		Revision as of 10:14, 21 October 2006
Line 26:		Line 26:
	\| \\\\ \|\| Low-speed cooling fan rotation.		\| \\\\ \|\| Low-speed cooling fan rotation.
	\|-		\|-
-	\| >>>> \|\| Unknown. Sent by mc_ctld on boot.	+	\| >>>> \|\| Unknown. Sent by [[#mc_ctld\|mc_ctld]] on boot.
	\|-		\|-
-	\| AAAA \|\| Unknown. Sent by mc_ctld on boot.	+	\| AAAA \|\| Unknown. Sent by [[#mc_ctld\|mc_ctld]] on boot.
	\|-		\|-
	\| CCCC \|\| Sent by shutdown -r now (reboot).		\| CCCC \|\| Sent by shutdown -r now (reboot).
Line 34:		Line 34:
	\| EEEE \|\| Sent by shutdown -h now (halt).		\| EEEE \|\| Sent by shutdown -h now (halt).
	\|-		\|-
-	\| FFFF \|\| Unknown. Sent by mc_ctld on boot.	+	\| FFFF \|\| Unknown. Sent by [[#mc_ctld\|mc_ctld]] on boot.
	\|-		\|-
-	\| JJJJ \|\| Unknown. Sent by mc_ctld on boot.	+	\| JJJJ \|\| Unknown. Sent by [[#mc_ctld\|mc_ctld]] on boot.
	\|-		\|-
-	\| KKKK \|\| Unknown. Sent by mc_ctld on boot.	+	\| KKKK \|\| Unknown. Sent by [[#mc_ctld\|mc_ctld]] on boot.
	\|-		\|-
-	\| QQQQ \|\| Unknown. Sent by mc_ctld on set timer.	+	\| QQQQ \|\| Unknown. Sent by [[#mc_ctld\|mc_ctld]] on set timer.
	\|-		\|-
	\| RRRR \|\| End of clear flash memory.		\| RRRR \|\| End of clear flash memory.
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	Most of this information courtesy of http://www.yamasita.jp/linkstation.en/index.html.		Most of this information courtesy of http://www.yamasita.jp/linkstation.en/index.html.

		+	== Pin Functions ==
	For an in depth description of the pin functions of the microcontroller see [[Hardware_Hacks_for_the_LS2#The_AVR\|Kuroguy's analysis of the pin functions]]		For an in depth description of the pin functions of the microcontroller see [[Hardware_Hacks_for_the_LS2#The_AVR\|Kuroguy's analysis of the pin functions]]
		+
		+
		+	<!-- Do not change the next header, other pages link to the section by that header name -->
		+	== mc_ctld ==
		+
		+	'''mc_ctld''' is the ''microcontroller control [[w:Daemon (computer software)\|daemon]]''. It is a piece of software running on the [[LS2]] under Linux, which communicates with the LS2's Freescale housekeeping microcontroller. It is propritary [[Buffalo]] software, and Buffalo refuses to release the source code. Therefore, the exact inner working of the software is not known. However, its general function is known, due to extensive analysis which has been done on the [[LS1]] equivalent of that software ([[ppc_uartd]]).
		+
		+	The daemon is started during system boot in run-level 2, and stopped in run-level 0 (system halt) and 6 (system reboot). The startup script is ''/etc/init.d/mc_ctld'', while the daemon binary itself is ''/usr/sbin/mc_ctld''.
		+
		+	The daemon's primary task it to reset the [[w:Watchdog timer\|watchdog timer]] in the microcontroller in regular intervals. So that timer doesn't trigger and doesn't initiate a reboot. '''mc_ctld''' monitors some system health indicators, like the [[Samba]] process (via using the process ID stored in ''/var/run/smbd.pid''). If these fail, it initiates a reboot (or stops resetting the timer).
		+
		+	It also observes ''/etc/melco/timer_status'' to adhere to "sleep / wakeup" settings - an LS feature configurable via the web admin interface at [http://linkstation/cgi-bin/setup-sleep.cgi http://linkstation/cgi-bin/setup-sleep.cgi]. The web admin interface stores the configured values in ''/etc/melco/timer_status'' and '''mc_ctld''' reads them and forwards them to the housekeeping microcontroller.
		+
		+	The communication with the microcontroller is done via ''/dev/ttyS0'', using the commands listed at the beginning of this article or similar, currently not reverse-engineered commands.
		+
		+	'''mc_ctld''''s relatively late position in the LinkStation's boot procedure can sometimes be the cause of [[brick]]ing a LinkStation. If the preceding startup scripts take to long, the watchdog timer can trigger before '''mc_ctld''' was started and had a chance to reset the timer. The LS will then repeatedly reboot while still in the boot procedure. Usually this is not a problem with the standard system configuration, but it is known to become a problem if the startup of additional services had been added before the '''mc_ctld''' startup. Therefore it is highly recommended to add own rc startup scripts after start sequence S95 only.

	[[Category:LS2]]		[[Category:LS2]]
	[[Category:Hardware]]		[[Category:Hardware]]

Kuroguy at 01:13, 21 October 2006

Kuroguy — Sat, 21 Oct 2006 01:13:48 GMT

← Older revision		Revision as of 01:13, 21 October 2006
Line 73:		Line 73:
	\|}		\|}
	Most of this information courtesy of http://www.yamasita.jp/linkstation.en/index.html.		Most of this information courtesy of http://www.yamasita.jp/linkstation.en/index.html.
		+
		+	For an in depth description of the pin functions of the microcontroller see [[Hardware_Hacks_for_the_LS2#The_AVR\|Kuroguy's analysis of the pin functions]]

	[[Category:LS2]]		[[Category:LS2]]
	[[Category:Hardware]]		[[Category:Hardware]]

89.52.203.39 at 22:05, 20 October 2006

89.52.203.39 — Fri, 20 Oct 2006 22:05:12 GMT

← Older revision		Revision as of 22:05, 20 October 2006
Line 8:		Line 8:
	{{Warning\| Some of these commands have not yet been tested on the mipsel-hdhlan LinkStation. Please report any differences}}		{{Warning\| Some of these commands have not yet been tested on the mipsel-hdhlan LinkStation. Please report any differences}}

-	The AVR ~~controls much of the LinkStation hardware~~, ~~including~~ the ~~power button and LED indicator~~. ~~It is controlled by the commands sent to <tt>~~/~~dev~~/~~ttyS0<~~/~~tt>~~. ~~To send commands to~~ the ~~AVR:~~	+	The MIPSel [[LS2]] actually does not contain an [[AVR]] (other LS versions do). AVRs are microcontrollers from Atmel and an Atmel brand, while the LS2 contains a Freescale (Motorola) microcontroller [http://www.freescale.com/files/microcontrollers/doc/data_sheet/MC68HC908JL8.pdf MC68HC908JL8], which is based upon the Motorola 6808 microprocessor, which is a decendant of the classic Motorola 6800 microprocessor, first released in 1975 at the dawn of microprocessors.

		+	The microcontroller serves the same purpose as the AVRs in other LinkStation models. It controls much of the LinkStation hardware, including the power button and LED indicator. It is controlled by the commands sent to <tt>/dev/ttyS0</tt>.
		+
		+	To send commands to the microcontroller use e.g.:
	echo -n "commands" > /dev/ttyS0		echo -n "commands" > /dev/ttyS0
	{\| style="background:#DDDDDD; color:black"		{\| style="background:#DDDDDD; color:black"

Ramuk at 20:34, 6 September 2006

Ramuk — Wed, 06 Sep 2006 20:34:14 GMT

← Older revision		Revision as of 20:34, 6 September 2006
Line 11:		Line 11:

	echo -n "commands" > /dev/ttyS0		echo -n "commands" > /dev/ttyS0
-	{\| style="~~width:75%;~~ background:#~~E0FFFF~~" ~~border~~="1" ~~align=center~~	+	{\| style="background:#DDDDDD; color:black"
-	\|\|'''Command''' \|\|'''Action/Code'''	+	\|style="background:#CCCCCC; color:green" \|'''Command'''
		+	\|style="background:#CCCCCC; color:green" \|'''Action/Code'''
	\|-		\|-
	\| \30\30\30\30 \|\| Stops smbd and atalkd if /dev/hda3 is not mounted to /mnt. Sent by /www/script/melsub_diskcheck.sh.		\| \30\30\30\30 \|\| Stops smbd and atalkd if /dev/hda3 is not mounted to /mnt. Sent by /www/script/melsub_diskcheck.sh.

Ramuk at 01:59, 21 July 2006

Ramuk — Fri, 21 Jul 2006 01:59:39 GMT

← Older revision		Revision as of 01:59, 21 July 2006
Line 1:		Line 1:
		+	{{Template:Articles}}
	''<font color=red><small>		''<font color=red><small>
	This article		This article