Tag Archives: ARM
For everyone who has ever used what I call junk ARM dev boards, and hasn’t been able to work out what combination of out-of-tree u-boot/kernel patches they should be using, or how to enable the serial port, Jon is trying to make the situation better on 64 bit ARM server hardware. Needless to say, I very much approve. Here is his talk:
I finally got UEFI flashed onto the Gigabyte board so now it is SBSA/SBBR compliant [edit: see note at end] and will just work with RHEL. Instructions here: https://lists.centos.org/pipermail/arm-dev/2016-March/001743.html
Here are the boot messages from TianoCore:
TianoCore 1.20.03 UEFI 2.4.0 Jan 26 2016 18:09:04 CPU: APM ARM 64-bit Potenza Rev B0 2400MHz PCP 2400MHz 32 KB ICACHE, 32 KB DCACHE SOC 2000MHz IOBAXI 400MHz AXI 250MHz AHB 200MHz GFC 125MHz Board: X-Gene Mp30ar0 Board Slimpro FW: Ver: 2.4 (build 01.15.01.00 2015/05/22) TPC: disable AVS: support PMD: 970 mV SOC: 950 mV The default boot selection will start in 1 second
Note: A few people have pointed out that the Gigabyte isn’t SBSA compliant because it lacks the right serial port, RTC and WDT. However it still boots RHELSA fine if you add
IPMI works out of the box. I’m using FreeIPMI to test this (not ipmitool) since FreeIPMI is a lot easier to use.
You need to know that:
- The default user name is
adminand the default password is
- You have to use the dedicated management interface, marked “f” in the software reference guide (the ethernet port above the two USB sockets).
Here are the sensors:
$ ipmi-sensors -h 192.168.0.104 -u admin -p password Caching SDR repository information: /home/rjones/.freeipmi/sdr-cache/sdr-cache-moo.192.168.0.104 Caching SDR record 34 of 34 (current record ID 205) ID | Name | Type | Reading | Units | Event 4 | CPU0_TEMP | Temperature | 49.00 | C | 'OK' 9 | DIMM_P0_A0 | Temperature | N/A | C | N/A 10 | DIMM_P0_A1 | Temperature | N/A | C | N/A 12 | DIMM_P0_B0 | Temperature | N/A | C | N/A 13 | DIMM_P0_B1 | Temperature | N/A | C | N/A 15 | DIMM_P0_C0 | Temperature | N/A | C | N/A 16 | DIMM_P0_C1 | Temperature | N/A | C | N/A 18 | DIMM_P0_D0 | Temperature | N/A | C | N/A 19 | DIMM_P0_D1 | Temperature | N/A | C | N/A 59 | P12V | Voltage | 11.83 | V | 'OK' 60 | P5V | Voltage | 5.11 | V | 'OK' 61 | P3V3 | Voltage | 3.33 | V | 'OK' 62 | P5V_STBY | Voltage | 5.13 | V | 'OK' 64 | P_VBAT | Voltage | 3.07 | V | 'OK' 65 | P_VCCP | Voltage | 0.97 | V | 'OK' 66 | P_1V2_HUB | Voltage | 1.20 | V | 'OK' 67 | P_VDDQ_AB | Voltage | 1.50 | V | 'OK' 68 | P_VDDQ_CD | Voltage | 1.50 | V | 'OK' 71 | P_0V9_VDD | Voltage | 0.96 | V | 'OK' 72 | P_1V5_VDD | Voltage | 1.52 | V | 'OK' 73 | P_2V5_VDD | Voltage | 2.50 | V | 'OK' 74 | P_1V8_VDD | Voltage | 1.82 | V | 'OK' 136 | CPU0_FAN | Fan | 4000.00 | RPM | 'OK' 138 | SYS_FAN1 | Fan | N/A | RPM | N/A 139 | SYS_FAN2 | Fan | N/A | RPM | N/A 140 | SYS_FAN3 | Fan | N/A | RPM | N/A 141 | SYS_FAN4 | Fan | N/A | RPM | N/A 190 | CPU0 | Processor | N/A | N/A | 'Processor Presence detected' 202 | MB_TEMP1 | Temperature | 37.00 | C | 'OK' 203 | MB_TEMP2 | Temperature | 31.00 | C | 'OK' 204 | MB_TEMP3 | Temperature | 28.00 | C | 'OK' 205 | SEL | Event Logging Disabled | N/A | N/A | 'OK'
Firstly Jon Masters demonstrates running RHEL 7.2 with a (very very nearly) unmodified upstream kernel on SBSA/SBBR standards supporting hardware:
Secondly the LeMaker Cello is available for preorder from http://www.lenovator.com/product/103.html with delivery next month.
Turns out that
acpi=off is only needed by the RHEL 7.2 installer kernel. After installation, ACPI works fine. That might be because the installer kernel is older than the current RHEL 7 kernel. dmesg output after the break.