ASRock Rack PAUL

1: ASRock Rack PAUL: GPIO

Project status: in progress

The ASRock Rack PAUL is a PCI-express add-in card for servers and workstations containing an Aspeed AST2500 BMC chip. A Baseboard Management Controller (BMC) is a small computer that allows for out-of-band management. It allows for remote power control, KVM (remote keyboard, video and mouse) control, virtual media insertion and much more.

Property	Value	Part
Processor	ARM1176JZS (ARMv6) @ 800MHz	AST2500 SoC
RAM	512MB DDR4	K4A4G165WE-BCRC
Storage	3x 32MB SPI flash	MX25L25645G

These parts make for quite a powerful system, unfortunately the operating system shipped by ASRock Rack is proprietary and dos not allow for easy modification. To allow for a more secure, transparent and customizable experience we are working on adding support for this mainboard to the mainline Linux kernel and the OpenBMC Linux distribution for BMCs.

Official documentation is provided in ASRock Racks manual.

1 - ASRock Rack PAUL: GPIO

This page describes the GPIOs of the ASPEED AST2500 BMC on the ASRock Rack Paul card.

#	ID	Power domain	Peripheral	Type	Name	Description	Verified
0	A0	PV33D
1	A1	PV33D
2	A2	PV33D	GPIO	Input	input-nmi	NMI input on pinheader	Yes
3	A3	PV33D
4	A4		I2C			I2C bus 8 clock (IPMB_1)	Yes
5	A5		I2C			I2C bus 8 data (IPMB_1)	Yes
6	A6
7	A7
8	B0	LPVDD
9	B1	LPVDD
10	B2	LPVDD
11	B3	LPVDD
12	B4	LPVDD
13	B5	LPVDD
14	B6	LPVDD
15	B7	LPVDD
16	C0		SD card			SD card 1: CLK	Yes
17	C1		SD card			SD card 1: CMD	Yes
18	C2		SD card			SD card 1: DAT0	Yes
19	C3		SD card			SD card 1: DAT1	Yes
20	C4		SD card			SD card 1: DAT2	Yes
21	C5		SD card			SD card 1: DAT3	Yes
22	C6		SD card			SD card 1: CD#	Yes
23	C7
24	D0		GPIO	Input	button-power-n	AUX_PANEL1 pin 1	Yes
25	D1		GPIO	Output open drain	control-power-n	AUX_PANEL1 pin 3	Yes
26	D2		GPIO	Input	button-reset-n	AUX_PANEL1 pin 5	Yes
27	D3		GPIO	Output open drain	control-reset-n	AUX_PANEL1 pin 7	Yes
28	D4		GPIO		aux-panel-1-9	AUX_PANEL1 pin 9	Yes
29	D5		GPIO		aux-panel-1-11	AUX_PANEL1 pin 11	Yes
30	D6		GPIO		aux-panel-1-15	AUX_PANEL1 pin 15	Yes
31	D7		GPIO		aux-panel-1-17	AUX_PANEL1 pin 17	Yes
32	E0					(UART3 CTS)
33	E1					(UART3 DCD)
34	E2					(UART3 DSR)
35	E3					(UART3 RING)
36	E4					(UART3 DTR)
37	E5					(UART3 RTS)
38	E6					(UART3 TX)
39	E7					(UART3 RX)
40	F0					(UART4 CTS, LPC HOST BIT 0)
41	F1					(UART4 DCD, LPC HOST BIT 1)
42	F2					(UART4 DSR, LPC HOST BIT 2)
43	F3					(UART4 RING, LPC HOST BIT 3)
44	F4					(UART4 DTR, LPC HOST CLOCK IO)
45	F5					(UART4 RTS, LPC HOST FRAME#)
46	F6					(UART4 TX, LPC HOST SERIRQ#, maybe BMC_PCH_SCI_LPC)
47	F7		GPIO	Output	output-bios-flash-select	Switches SPI1 between the BIOS flash chip and BIOS_PH1	Yes
48	G0		GPIO	Output
49	G1
50	G2
51	G3
52	G4		GPIO	Input	input-aux-smb-alert-n	SMBus alert for I2C bus 5 (AUX_PANEL2)	Yes
53	G5
54	G6		GPIO	Input	input-psu-smb-alert-n	SMBus alert for I2C bus 3 (PSU_SMB1)	Yes
55	G7
56	H0
57	H1
58	H2
59	H3
60	H4		GPIO	Input	input-mfg-mode-n	Pulled low when jumper MFG1 is closed	Yes
61	H5
62	H6		GPIO	Output	led-heartbeat-n	Controls the green heartbeat LED on the board (active low)	Yes
63	H7
64	I0					(SYSCS#)
65	I1					(SYSCK)
66	I2					(SYSMOSI)
67	I3					(SYSMISO)
68	I4		SPI	CS		SPI1CS0# / VBCS#	Yes
69	I5		SPI	SCK		SPI1CK / VBCK	Yes
70	I6		SPI	MOSI		SPI1MOSI / VBMOSI	Yes
71	I7		SPI	MISO		SPI1MISO / VBMISO	Yes
72	J0
73	J1
74	J2
75	J3
76	J4		VGA			VGA horizontal sync
77	J5		VGA			VGA vertical sync
78	J6		VGA			VGA DDC clock
79	J7		VGA			VGA DDC data
80	K0		I2C			I2C bus 4 clock (temperature sensor)	Yes
81	K1		I2C			I2C bus 4 data (temperature sensor)	Yes
82	K2		I2C			I2C bus 5 clock (AUX_PANEL2)	Yes
83	K3		I2C			I2C bus 5 data (AUX_PANEL2)	Yes
84	K4					(I2C bus 6 clock)
85	K5					(I2C bus 6 data)
86	K6		I2C			I2C bus 7 clock (FRU and SPD EEPROM SMBus)
87	K7		I2C			I2C bus 7 data (FRU and SPD EEPROM SMBus)
88	L0					(UART1 CTS)
89	L1					(UART1 DCD)
90	L2					(UART1 DSR)
91	L3					(UART1 RING)
92	L4					(UART1 DTR)
93	L5					(UART1 RTS)
94	L6					(UART1 TX)
95	L7					(UART1 RX)
96	M0					(UART2 CTS)
97	M1					(UART2 DCD)
98	M2					(UART2 DSR)
99	M3					(UART2 RING)
100	M4					(UART2 DTR)
101	M5					(UART2 RTS)
102	M6					(UART2 TX)
103	M7					(UART2 RX)
104	N0		PWM
105	N1		PWM			FAN1 PWM output (pwm2)	Yes
106	N2		PWM			FAN2 PWM output (pwm3)	Yes
107	N3		PWM
108	N4		PWM
109	N5		PWM
110	N6
111	N7
112	O0		Tachometer
113	O1		Tachometer			FAN1 tachometer input (in2)	Yes
114	O2		Tachometer			FAN2 tachometer input (in3)	Yes
115	O3		Tachometer
116	O4		Tachometer
117	O5		Tachometer
118	O6
119	O7
120	P0
121	P1
122	P2
123	P3		Tachometer
124	P4		Tachometer
125	P5		Tachometer
126	P6
127	P7
128	Q0		I2C			I2C bus 2 clock (BMC_SMB_2)	Yes
129	Q1		I2C			I2C bus 2 data (BMC_SMB_2)	Yes
130	Q2		I2C			I2C bus 3 clock (PSU_SMB1)	Yes
131	Q3		I2C			I2C bus 3 data (PSU_SMB1)	Yes
132	Q4		GPIO	Input	input-bmc-smb-present-1-n	BMC present input (BMC_SMB_1)	Yes
133	Q5		GPIO	Input	input-bmc-smb-present-2-n	BMC present input (BMC_SMB_2)	Yes
134	Q6	PV33D
135	Q7	PV33D	GPIO	Output	output-pcie-wake-n	PCI Express WAKE#	Yes
136	R0
137	R1
138	R2					(SPI2CS0#)
139	R3					(SPI2CK)
140	R4					(SPI2MOSI)
141	R5					(SPI2MISO)
142	R6		RGMII			MDC1
143	R7		RGMII			MDIO1
144	S0	PV33D
145	S1	PV33D
146	S2	PV33D
147	S3	PV33D
148	S4	PV33D
149	S5	PV33D
150	S6	PV33D
151	S7	PV33D
152	T0		RGMII			Dedicated LAN port: TXCK	Yes
153	T1		RGMII			Dedicated LAN port: TXCL	Yes
154	T2		RGMII			Dedicated LAN port: TXD0	Yes
155	T3		RGMII			Dedicated LAN port: TXD1	Yes
156	T4		RGMII			Dedicated LAN port: TXD2	Yes
157	T5		RGMII			Dedicated LAN port: TXD3	Yes
158	T6		RMII			NC-SI: RCLKO
159	T7		RMII			NC-SI: TXEN	Yes
160	U0		RMII			NC-SI: TXD0	Yes
161	U1		RMII			NC-SI: TXD1	Yes
162	U2
163	U3
164	U4		RGMII			Dedicated LAN port: RXCK	Yes
165	U5		RGMII			Dedicated LAN port: RXCTL	Yes
166	U6		RGMII			Dedicated LAN port: RXD0	Yes
167	U7		RGMII			Dedicated LAN port: RXD1	Yes
168	V0		RGMII			Dedicated LAN port: RXD2	Yes
169	V1		RGMII			Dedicated LAN port: RXD3	Yes
170	V2		RMII			NC-SI: CLKI
171	V3
172	V4		RMII			NC-SI: RXD0	Yes
173	V5		RMII			NC-SI: RXD1	Yes
174	V6		RMII			NC-SI: CRSDV	Yes
175	V7		RMII			NC-SI: RXER
176	W0		ADC			Analog input representing 3VSB
177	W1		ADC			Analog input representing 5VSB
178	W2		ADC			Analog input representing VCPU
179	W3		ADC			Analog input representing VSOC
180	W4		ADC			Analog input representing VCCM
181	W5		ADC			Analog input representing APU VDDP
182	W6		ADC			Analog input representing PM VDD CLDO
183	W7		ADC			Analog input representing PM VDDCR S5
184	X0		ADC			Analog input representing PM VDDCR
185	X1		ADC			Analog input representing RTC battery voltage
186	X2		ADC			Analog input representing 3V
187	X3		ADC			Analog input representing 5V
188	X4		ADC			Analog input representing 12V
189	X5					(ADC)
190	X6					(ADC)
191	X7					(ADC)
192	Y0	PV33D	GPIO		aux-panel-2-11	AUX_PANEL2 pin 11	Yes
193	Y1	PV33D	GPIO		aux-panel-2-15	AUX_PANEL2 pin 15	Yes
194	Y2	PV33D	GPIO		aux-panel-2-17	AUX_PANEL2 pin 17	Yes
195	Y3	PV33D	GPIO	Output	led-fault-n	Red LED indicating system error & AUX_PANEL2 pin 19	Yes
196	Y4		I2C			I2C bus 0 clock (PCI express)	Yes
197	Y5		I2C			I2C bus 0 data (PCI express)	Yes
198	Y6		I2C			I2C bus 1 clock (BMC_SMB_1)	Yes
199	Y7		I2C			I2C bus 1 data (BMC_SMB_1)	Yes
200	Z0	PV33D	GPIO		aux-panel-2-3	AUX_PANEL2 pin 3	Yes
201	Z1	PV33D	GPIO		aux-panel-2-5	AUX_PANEL2 pin 5	Yes
202	Z2	PV33D	GPIO		aux-panel-2-7	AUX_PANEL2 pin 7	Yes
203	Z3	PV33D	GPIO		aux-panel-2-9	AUX_PANEL2 pin 9	Yes
204	Z4	PV33D
205	Z5	PV33D
206	Z6	PV33D
207	Z7	PV33D
208	AA0	PV33D	GPIO	Output	led-fan1-fault	Red LED indicating fault in FAN 1	Yes
209	AA1	PV33D	GPIO	Output	led-fan2-fault	Red LED indicating fault in FAN 2	Yes
210	AA2	PV33D
211	AA3	PV33D
212	AA4	PV33D
213	AA5	PV33D
214	AA6	PV33D
215	AA7	PV33D
216	AB0	PV33D
217	AA1	PV33D
218	AA2	PV33D
219	AA3	PV33D
220	—						—-
221	—						—-
222	—						—-
223	—						—-
224	AC0		LPC			LAD0	Yes
225	AC1		LPC			LAD1	Yes
226	AC2		LPC			LAD2	Yes
227	AC3		LPC			LAD3	Yes
228	AC4		LPC			Clock	Yes
229	AC5		LPC			LFRAME	Yes
230	AC6		LPC			IRQ
231	AC7		LPC			Reset	Yes