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libefivar: Handle Sata device path when optional para is not specified

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Sata device path format:Sata(HPN, PMPN, LUN)
According to UEFI Spec, the PMPN is an integer between
0 and 65535 and is optional. If not provided, the default is 0xFFFF.

This commit is to do the enhancement for Sata device path
when optional para is not specified.

Upstream Bug:	https://bugzilla.tianocore.org/show_bug.cgi?id=1243
Obtained from:	6d9b9bbb61
Pull Request:   https://github.com/freebsd/freebsd-src/pull/581
This commit is contained in:
Jose Luis Duran 2022-02-25 14:48:26 -03:00 committed by Warner Losh
parent 9a62aa9329
commit 4e83ac7d2e
1 changed files with 9 additions and 1 deletions
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10
lib/libefivar/efivar-dp-parse.c
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@ -3594,7 +3594,15 @@ DevPathFromTextSata (
(UINT16) sizeof (SATA_DEVICE_PATH)
);
Sata->HBAPortNumber = (UINT16) Strtoi (Param1);
Sata->PortMultiplierPortNumber = (UINT16) Strtoi (Param2);
//
// According to UEFI spec, if PMPN is not provided, the default is 0xFFFF
//
if (*Param2 == '\0' ) {
Sata->PortMultiplierPortNumber = 0xFFFF;
} else {
Sata->PortMultiplierPortNumber = (UINT16) Strtoi (Param2);
}
Sata->Lun = (UINT16) Strtoi (Param3);
return (EFI_DEVICE_PATH_PROTOCOL *) Sata;