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

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1243

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.

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
This commit is contained in:
Dandan Bi 2018-10-12 10:18:26 +08:00 committed by Liming Gao
parent ea1486c281
commit 6d9b9bbb61
1 changed files with 9 additions and 1 deletions
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8
MdePkg/Library/UefiDevicePathLib/DevicePathFromText.c
View File

@ -3416,7 +3416,15 @@ DevPathFromTextSata (
(UINT16) sizeof (SATA_DEVICE_PATH)
);
Sata->HBAPortNumber = (UINT16) Strtoi (Param1);
//
// According to UEFI spec, if PMPN is not provided, the default is 0xFFFF
//
if (*Param2 == L'\0' ) {
Sata->PortMultiplierPortNumber = 0xFFFF;
} else {
Sata->PortMultiplierPortNumber = (UINT16) Strtoi (Param2);
}
Sata->Lun = (UINT16) Strtoi (Param3);
return (EFI_DEVICE_PATH_PROTOCOL *) Sata;