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PAC-4010 User Manual V1.0 Copyright 2016 Advantech Co. Ltd. All rights reserved. Page
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9.2.3 Bootloader Update
The bootloader HPM.1 upgrade is written to the external flash. This means
there is no recovery existing for the bootloader image. It is not recommended to
upgrade the bootloader in the field. U-boot always uses SPI flash 0, even if
there is a copy of the bootloader in SPI flash 1, SPI flash 0 will be used for boot.
9.2.4 Firmware Update
The firmware upgrade component follows the HPM.1 specification and the upgrade and
activation stage can be performed while the payload is running. In case of an update,
the ShMC/IPMC is not accessible to any service while activation stage.
9.2.5 FPGA Update
The FPGA upgrade component follows the HPM.1 specification. The upgrade can be
performed while the payload is running. For the activation stage, a payload part reboot
and power off is required. The IPMC is not accessible to any service while activation
stage. After FPGA activation the IPMC performs a FPGA POST check, if this check
fails a FPGA rollback will be initiated.
9.2.6 BIOS Update
The BIOS component requires a payload reboot or power cycle, in order to perform the
activation stage. The component follows the HPM.1 standard.
9.2.7 NVRAM Update
In contrast to the other components, the NVRAM HPM.1 component provides some
extended capabilities. The ShMC/IPMC can hold up to 4 NVRAM regions. Each region
can be upgraded with a regular HPM.1 upgrade. The user can select the upload and
activation region with issuing an OEM command to the controller.
The below figure illustrates the NVRAM section selection:
Figure 9-1: NVRAM HPM.1 Upgrade
Содержание PAC-4010
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