U-Boot Diagnostic Test Modes–Normal, Quick, and Extended

U-Boot offers three diagnostic modes of operation: -Normal, -Quick, and -Extended. -Normal mode diagnostic tests are run by default each time the server starts up. Other modes of operations (-Quick or -Extended) must be selected to run at startup.

For details about which U-Boot diagnostic tests are run for each mode, see the following table. For details about how to select one of the three U-Boot modes to run at system startup, see How to Select a U-Boot Diagnostic Mode to Run at Startup.

Note - If any of the U-Boot diagnostic tests fail during startup, the server SP will not start. See Reporting Diagnostic Failures at System Startup for additional details.

U-Boot Component Test	Normal	Quick	Extended	Purpose
Memory Data Bus Test	X	X	X	Checks for opens/shorts on SP Memory’s data bus.
Memory Address Bus Test	X	X	X	Checks for opens/shorts on SP Memory’s address bus.
Memory Data Integrity Test			X	Checks for data integrity on the SP Memory.
Flash Test			X	Checks access to Flash.
WatchDog Test			X	Checks the WatchDog functionality on the SP.
I2C Probe Tests	X		X	Checks the connectivity to I2C devices on standby power.
Ethernet Test	X	X	X	Verifies ability to read from specified Ethernet port.
Ethernet Link Test	X	X	X	Verifies link on specified PHY.
Ethernet Internal Loopback Test	X		X	Verifies Ethernet functionality by sending and receiving packets.
Real Time Clock Test	X		X	Checks functionality of the real-time clock on the SP.
USB 1.1 Test			X	Checks USB 1.1 functionality.
USB 1.1 BIST				Runs internal USB 1.1 built-in self-test (BIST).
USB 2.0 Test			X	Checks USB 2.0 functionality.
BIOS Flash ID Test	X		X	Verifies ability to read from the BIOS flash.
Serial Presence Detect (SPD) Access Test			X	Verifies DIMM SPD access along with checksum and prints SPD information.
Power CPLD Test	X	X	X	Verifies the correct power revision of the complex programmable logic device (CPLD). ¹

¹ For rackmount servers, the I2C tests check the connectivity to all I2C devices installed in the chassis. For Oracle's Sun Blade 6000 or 6048 Chassis Modular Systems, the I2C tests check only the connectivity to I2C devices installed on an individual server module.

Skip Navigation Links
Exit Print View
	Sun Fire X2270 M2 Server Product Documentation