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C bus, via the PCI/ISA chipset PIIX4E South - programs

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MaxiLife Hardware Monitoring Chip MaxiLife is a hardware monitoring chip which is resident on the system board. Its responsibility includes On/Off and reset control, status panel management (Lock button, LEDs), hardware monitoring (temperature and voltage), early diagnostics (CPU, DIMMs, PLLs, boot start), run-time diagnostics (CPU errors, package intrusions), and other miscellaneous functions (such as special OK/FAIL symbols based on a smiling face). The integrated microprocessor includes a Synopsys cell based on Dallas "8052" equivalent, a 2 KB boot ROM, 256 bytes of data RAM, an I2C cell, an Analog-to-Digital (ADC) with 5 entries, and an additional glue logic for interrupt control, fan regulation, and a status panel control. MaxiLife downloads its code in 96 milliseconds from an I2C serial EEPROM. The total firmware (MaxiLife 8051-code, running in RAM) size is 5 KB. As it exceeds the 2 KB program RAM space, a paging mechanism will swap code as it is required, based on a 512 byte buffer. The first 2 KB pages of firmware code is critical because it controls the initial power on/reset to boot the system. This initial page is checked with a null-checksum test and the presence of MaxiLife markers (located just below the 2 KB limit). If the boot block has been corrupted, the Firmware can start from its 'crisis' block. To do this, set the System board switch 10 to the Closed position. MaxiLife is partially replacing HP ASIC (Little Ben), and provides the necessary hardware monitoring control. However, MaxiLife is not accessible in I/O space or memory space of the system platform, but only through the SMBUS (which is a sub-set of the I2C bus), via the PCI/ISA chipset (PIIX4E South Bridge). Its I2C cell may operate either in Slave or Master mode, switched by firmware, or automatically in case of 'Arbitration' loss. As a monitoring chip, MaxiLife reports critical errors at start-up, and as such is powered by Vstandby (3.3V) power. For MaxiLife to work correctly, the PC Workstation must always be connected to a grounded outlet. This enables the PC Workstation's hardware monitoring chip to be active, even if the system has been powered off. 2

Section	Page
MaxiLife Hardware Monitoring Chip	1
MaxiLife Hardware Monitoring Chip	1
MaxiLife is a hardware monitoring chip which is resident on the system board. Its responsibility ...	2
MaxiLife is a hardware monitoring chip which is resident on the system board. Its responsibility ...	2
The integrated microprocessor includes a Synopsys cell based on Dallas “8052” equivalent, a 2 KB ...	2
MaxiLife downloads its code in 96 milliseconds from an I2C serial EEPROM. The total firmware (Max...	2
If the boot block has been corrupted, the Firmware can start from its ‘crisis’ block. To do this,...	2
MaxiLife is partially replacing HP ASIC (Little Ben), and provides the necessary hardware monitor...	2
As a monitoring chip, MaxiLife reports critical errors at start-up, and as such is powered by Vst...	2
MaxiLife Architecture	3
The MaxiLife chip continuously monitors temperature and voltage sensors located in critical regio...	3
<GRAPHIC>	3
<GRAPHIC>	3
<GRAPHIC>	4
The LCD Menu	4
To access the LCD main menu, press one of the LCD keys. This menu is composed of several menu ite...	4
System Info. Obtains information from the BIOS and the system’s Serial EEPROM from a previously...	4
System Info. Obtains information from the BIOS and the system’s Serial EEPROM from a previously...	4
System Info. Obtains information from the BIOS and the system’s Serial EEPROM from a previously...	4
System Info. Obtains information from the BIOS and the system’s Serial EEPROM from a previously...	4
System Info. Obtains information from the BIOS and the system’s Serial EEPROM from a previously...	4
Boot Steps. Shows the Power-On Self Test (POST) codes during the system startup. The POST code ...	4
Boot Steps. Shows the Power-On Self Test (POST) codes during the system startup. The POST code ...	4
Diagnostics. Runs a set of diagnostics assessing the system’s components (CPU presence, CPU pow...	4
Diagnostics. Runs a set of diagnostics assessing the system’s components (CPU presence, CPU pow...	4
Using MaxiLife When the Computer Is Powered Off	4
NOTE For MaxiLife to work correctly, the PC Workstation must always be connected to a grounded ou...	4
NOTE For MaxiLife to work correctly, the PC Workstation must always be connected to a grounded ou...	4
NOTE For MaxiLife to work correctly, the PC Workstation must always be connected to a grounded ou...	4
Even if the computer is powered off (the LCD status panel will be blank), MaxiLife is still runni...	4
The system components are tested in sequence (press the Next button to move on to the following t...	4
<GRAPHIC>	5
<GRAPHIC>	5
<GRAPHIC>	5
If an error is detected, a short message is displayed on the LCD status panel describing the type...	5
NOTE If the Diags program is run when the system is off, it returns to the Off state when exiting...	5
NOTE If the Diags program is run when the system is off, it returns to the Off state when exiting...	5
NOTE If the Diags program is run when the system is off, it returns to the Off state when exiting...	5
MaxiLife Test Sequence and Error Messages	6
MaxiLife Test Sequence and Error Messages	6
When the PC is turned on (pressing the ON/OFF button), the system initiates the normal startup se...	6
Basic pre-boot diagnostics.	6
Basic pre-boot diagnostics.	6
Basic pre-boot diagnostics.	6
Basic pre-boot diagnostics.	6
Basic pre-boot diagnostics.	6
BIOS launch.	6
BIOS launch.	6
POST phase.	6
POST phase.	6
Operating System boot phase.	6
Operating System boot phase.	6
If any errors are detected during the startup sequence, MaxiLife does not purposely ‘freeze’ the ...	6
Errors that are not so critical (for example, ‘CPU Socket’ for missing terminator, or ‘No RAM’) a...	6
Finally, while the PC is working, fan and temperature checks can be reported (for example, a fan ...	6
The different diagnostics are described below.	6
Basic Pre-boot Diagnostics	6
Basic Pre-boot Diagnostics	6
The first diagnostic (called basic pre-boot diagnostics) is run to check the presence of the proc...	6
The pre-boot diagnostic tests are run in order of priority with respect to their importance to co...	6
The first detected error displays a message on the LCD status panel. If this happens, one of the ...	6
<GRAPHIC>	7
<GRAPHIC>	7
<GRAPHIC>	7
<GRAPHIC>	7
<GRAPHIC>	7
<GRAPHIC>	8
<TABLE>	8
<TABLE>	8
Table 1 Basic Pre-boot Diagnostics	8
<TABLE HEADING>	8
<TABLE ROW>	8
Test	8
Error Code	8
Action to Take	8
<TABLE BODY>	8
<TABLE ROW>	8
Presence of either CPU or Terminator in the processor slot.	8
CPU SOCKET	8
Check CPUs and Terminator and VRM of installed processor.	8
<TABLE ROW>	8
Control of some voltages: VRMs, 12V	8
POWER SUPPLY	8
Check the power supply connectors, VRM, CPU. In a single processor system, check that the VRM i...	8
<TABLE ROW>	8
Test of the correct power signals to the CPU. The power supply may be OK, whereas the VRM is not.	8
POWER	8
Check that the VRM, processor and terminator are correctly installed.	8
<TABLE ROW>	8
Check the system board clock generators (PLL).	8
BOARD PLL	8
Check the power supply connector.	8
<TABLE ROW>	8
Number of installed DIMMs	8
NO RAM	8
Check that the memory module is correctly installed in the memory socket.	8
<TABLE ROW>	8
Compatibility of DIMMs. The BIOS checks that the inserted DIMMs are both compatible with one anot...	8
RAM TYPE	8
Check the installed memory modules. This error occurs when mixing incompatible memory modules, ...	8
<TABLE ROW>	8
Availability of video controller. It is checked by the BIOS. If an error is detected, it is not a...	8
NO VIDEO	8
Check that the video controller is correctly installed.	8
Post Test Sequence and Post Error Codes	9
Post Test Sequence and Post Error Codes	9
In order to check that the CPU is able to run the BIOS boot code (POST phase) from the first CPU ...	9
<GRAPHIC>	9
<GRAPHIC>	9
<GRAPHIC>	9
<GRAPHIC>	9
<GRAPHIC>	9
<GRAPHIC>	9
<GRAPHIC>	9
<GRAPHIC>	9
<GRAPHIC>	10
<GRAPHIC>	10
<GRAPHIC>	10
<TABLE>	10
Table 2 BIOS Launch and POST Phase	10
<TABLE HEADING>	10
<TABLE ROW>	10
Test	10
Error Code	10
Action to Take	10
<TABLE BODY>	10
<TABLE ROW>	10
In order to detect whether the CPU is able to run a given code, HP MaxiLife waits for a synchroni...	10
BIOS	10
Flash the latest version of the system BIOS by using the system recovery procedure. Set switch ...	10
<TABLE ROW>	10
The BIOS then executes the Power On Self Test (POST) sequence. In this phase, HP MaxiLife waits f...	10
POST XXXX	10
If the screen is working, you can obtain the meaning of the error by typing “Enter” at the end ...	10
Operating System Boot Phase	10
Operating System Boot Phase	10
If no error message has been displayed at this stage of the system startup by the BIOS, the opera...	10
Run-Time Errors	10
Run-Time Errors	10
During the normal usage of the PC, MaxiLife continualy checks some of the vital system parameters...	10
If several alarms or errors are active at the same time, they will be displayed by cycling every ...	10
Pre-boot diagnostics.	11
Pre-boot diagnostics.	11
Pre-boot diagnostics.	11
Pre-boot diagnostics.	11
Pre-boot diagnostics.	11
Run-Time error 1.	11
Run-Time error 1.	11
Run-Time error 2.	11
Run-Time error 2.	11
POST error.	11
POST error.	11
The run-time errors are organized into two different sources.	11
Run-Time error 1: “Temperature I/O slot”, “Power errors”, “Fan CPU”, “Board PLL”.	11
Run-Time error 1: “Temperature I/O slot”, “Power errors”, “Fan CPU”, “Board PLL”.	11
Run-Time error 1: “Temperature I/O slot”, “Power errors”, “Fan CPU”, “Board PLL”.	11
Run-Time error 1: “Temperature I/O slot”, “Power errors”, “Fan CPU”, “Board PLL”.	11
Run-Time error 1: “Temperature I/O slot”, “Power errors”, “Fan CPU”, “Board PLL”.	11
Run-Time error 2: “Temperature disk”, “Temperature CPU”, “Fan disk”, “Fan I/O slot”, “CPU error”.	11
Run-Time error 2: “Temperature disk”, “Temperature CPU”, “Fan disk”, “Fan I/O slot”, “CPU error”.	11
If both fan for disks and I/O slot are not connected (both are run-time error 1), only the “Fan d...	11
<TABLE>	11
<TABLE>	11
Table 3 Run-Time Errors	11
<TABLE HEADING>	11
<TABLE ROW>	11
Test	11
Error Code	11
Action to Take	11
<TABLE BODY>	11
<TABLE ROW>	11
During normal usage of the PC, HP MaxiLife continually checks vital system parameters. If an erro...	11
TEMP IO SLOT	11
Check the connection of the corresponding component, which could be: “Temp IO slot”, “Power err...	11
Main Menu	11
Main Menu	11
The main menu is displayed when any of the LCD buttons from are presed (MaxiLife LCD status panel...	11
System Info	11
Obtains information from the BIOS and the system’s Serial EEPROM from a previously successful boo...	11
The following diagram shows how the System Info obtains its information.	11
<GRAPHIC>	12
<GRAPHIC>	12
<GRAPHIC>	12
Shows the Power-On Self-Test (POST) codes during the system startup. The POST code is provided by...	12
To ensure that MaxiLife is ready to display the first POST codes as soon as possible, the Pre-boo...	12
The following diagram shows how Boot Steps obtains its information from the BIOS, and then displa...	12
<GRAPHIC>	12
<GRAPHIC>	12
<GRAPHIC>	12
Runs a set of diagnostics assessing the system’s components. Results of the tests are displayed o...	12
For MaxiLife to access the status of some of the components, the power supply has to be in the ON...	12
Components are tested in sequence when the “Next” button is pressed. When they have all been chec...	13
At the end of the test, you can exit the diagnostic mode by pressing the	13
The following diagram shows how the “Power On” is activated when the main power supply of the PC ...	13
<GRAPHIC>	13
<GRAPHIC>	13
<GRAPHIC>	14
<GRAPHIC>	14
<GRAPHIC>	14
<GRAPHIC>	15
<TABLE>	15
<TABLE>	15
Table 4 Main Menu Diagnostics	15
<TABLE HEADING>	15
<TABLE ROW>	15
Test	15
Error Code	15
Action to Take	15
<TABLE BODY>	15
<TABLE ROW>	15
Presence of either CPU or Terminator in the processor slot.	15
CPU SOCKET	15
Check CPUs and Terminator and VRM of installed processor.	15
<TABLE ROW>	15
Control of some voltages: VRMs, 12V	15
POWER SUPPLY	15
Check the power supply connectors, VRM, CPU.	15
<TABLE ROW>	15
Test of the correct power signals to the CPU. The power supply may be OK, whereas the VRM is not.	15
POWER	15
Check that the VRM, processor and terminator are correctly installed.	15
<TABLE ROW>	15
Check frequency of the system board (PLL).	15
BOARD PLL	15
Check the power supply connector.	15
<TABLE ROW>	15
Number of installed DIMMs	15
NO RAM	15
Check that the memory module is correctly installed in the memory socket.	15
<TABLE ROW>	15
Compatibility of DIMMs. The BIOS checks that the inserted DIMMs are both compatible with one anot...	15
RAM TYPE	15
Check the installed memory modules. This error occurs when mixing incompatible memory modules, ...	15
For More Information About MaxiLife	15

Match case Limit results 1 per page

MaxiLife Hardware Monitoring Chip

MaxiLife is a hardware monitoring chip which is resident on the system

board. Its responsibility includes On/Off and reset control, status panel

management (Lock button, LEDs), hardware monitoring (temperature and

voltage), early diagnostics (CPU, DIMMs, PLLs, boot start), run-time

diagnostics (CPU errors, package intrusions), and other miscellaneous

functions (such as special OK/FAIL symbols based on a smiling face).

The integrated microprocessor includes a Synopsys cell based on Dallas

“8052” equivalent, a 2 KB boot ROM, 256 bytes of data RAM, an I

C cell, an

Analog-to-Digital (ADC) with 5 entries, and an additional glue logic for

interrupt control, fan regulation, and a status panel control.

MaxiLife downloads its code in 96 milliseconds from an I

C serial EEPROM.

The total firmware (MaxiLife 8051-code, running in RAM) size is 5 KB. As it

exceeds the 2 KB program RAM space, a paging mechanism will swap code

as it is required, based on a 512 byte buffer. The first 2 KB pages of firmware

code is critical because it controls the initial power on/reset to boot the

system. This initial page is checked with a null-checksum test and the

presence of MaxiLife markers (located just below the 2 KB limit).

If the boot block has been corrupted, the Firmware can start from its ‘crisis’

block. To do this, set the System board switch 10 to the Closed position.

MaxiLife is partially replacing HP ASIC (Little Ben), and provides the neces-

sary hardware monitoring control. However, MaxiLife is not accessible in I/O

space or memory space of the system platform, but only through the SMBUS

(which is a sub-set of the I

C bus), via the PCI/ISA chipset (PIIX4E South

Bridge). Its I

C cell may operate either in Slave or Master mode, switched by

firmware, or automatically in case of ‘Arbitration’ loss.

As a monitoring chip, MaxiLife reports critical errors at start-up, and as such

is powered by Vstandby (3.3V) power. For MaxiLife to work correctly, the

PC Workstation must always be connected to a grounded outlet. This

enables the PC Workstation’s hardware monitoring chip to be active, even if

the system has been powered off.