dmi_hpe_cru

Synopsis

#include <opendmi/entity/hpe/cru.h>

typedef struct dmi_hpe_cru {
    dmi_binary_t signature_raw;
    char *signature;
    uint64_t address;
    uint32_t length;
    uint32_t offset;
    uint64_t entry_point;
    bool is_cru;
} dmi_hpe_cru_t;

Description

The dmi_hpe_cru_t structure holds the decoded HP/HPE 64-bit CRU information, which tells where the 64-bit entry point of the Compaq ROM Utility (CRU) services of the firmware is, which the watchdog timer driver calls.

The structure is returned by dmi_entity_info for the structures decoded by dmi_hpe_cru_spec, of type DMI_TYPE(hpe_cru), declared in <opendmi/module/hpe.h>, once the HPE extension module (dmi_hpe_module) is enabled, which it is for HP and HPE servers. It lives as long as the context it has been decoded in.

The structure is decoded up to Gen8 only, which is the last generation known to have it.

Fields

signature_raw

Signature, as the structure holds it.

signature

Signature, $CRU for the CRU services, or nullptr if it is not printable. Some servers carry records of other signatures too, e.g. $SHF, whose meaning is not known. The string belongs to the structure, and is freed along with it.

address

Physical address of the service area.

length

Length of the service area.

offset

Offset of the entry point within the service area.

entry_point

Physical address of the entry point.

is_cru

Whether the record describes the CRU services, as its signature $CRU tells. The address, the length, the offset and the entry point are shown for these records only.

See also

dmi_entity_info

Standards

Not part of the SMBIOS specification. Defined by HP and HPE for their servers; the layout is the one dmidecode documents.