On 2018/2/27 13:25, Ni, Ruiyu wrote: > I don't prefer to add PCD, unless we cannot find: > 1. spec content to describe the max/min blocks There is no spec about the max/min blocks in my mind. I had checked this in several pdf document like Universal Serial Bus Mass Storage Class Specification Overview, Universal Serial Bus Mass Storage Specification For Bootability, Universal Serial Bus Mass Storage Class Bulk-Only Transport. > 2. error handling when the blocks number is bigger than HW expects. Where should error handling add to? Error handing can't add to HW (end-point device), because HW is not in our control scope. > > Thanks/Ray > >> -----Original Message----- >> From: edk2-devel [mailto:edk2-devel-boun...@lists.01.org] On Behalf Of >> Ming Huang >> Sent: Saturday, February 24, 2018 5:30 PM >> To: leif.lindh...@linaro.org; linaro-u...@lists.linaro.org; edk2- >> de...@lists.01.org; graeme.greg...@linaro.org; Zeng, Star >> <star.z...@intel.com>; Dong, Eric <eric.d...@intel.com> >> Cc: huangmin...@huawei.com; ard.biesheu...@linaro.org; Ming Huang >> <ming.hu...@linaro.org>; Gao, Liming <liming....@intel.com>; >> mengfanr...@huawei.com; guoh...@huawei.com; >> zhangjinso...@huawei.com; Kinney, Michael D >> <michael.d.kin...@intel.com>; wai...@126.com; >> wanghuiqi...@huawei.com; huangda...@hisilicon.com >> Subject: [edk2] [RFC v1 1/1] MdeModulePkg/Usb: Use Pcd for >> UsbBootIoBlocks >> >> Booting from USB may fail while the macro USB_BOOT_IO_BLOCKS set to 128 >> because 128 blocks is exceeded the maximun blocks of some USB >> devices,like some virtual CD-ROM from BMC. So, give a chance to set the >> value of USB_BOOT_IO_BLOCKS by adding a Pcd. >> >> Contributed-under: TianoCore Contribution Agreement 1.1 >> Signed-off-by: Ming Huang <ming.hu...@linaro.org> >> --- >> MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.h | 7 >> +++++-- >> MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassStorageDxe.inf | 4 >> ++++ >> MdeModulePkg/MdeModulePkg.dec | 4 ++++ >> MdeModulePkg/MdeModulePkg.uni | 4 ++++ >> 4 files changed, 17 insertions(+), 2 deletions(-) >> >> diff --git a/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.h >> b/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.h >> index 5ee50ac52a21..ca9240adbd5f 100644 >> --- a/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.h >> +++ b/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.h >> @@ -16,6 +16,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY >> KIND, EITHER EXPRESS OR IMPLIED. >> #ifndef _EFI_USB_MASS_BOOT_H_ >> #define _EFI_USB_MASS_BOOT_H_ >> >> +#include <Library/PcdLib.h> >> + >> // >> // The opcodes of various USB boot commands: >> // INQUIRY/REQUEST_SENSE are "No Timeout Commands" as specified @@ >> -66,9 +68,10 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY >> KIND, EITHER EXPRESS OR IMPLIED. >> #define USB_PDT_SIMPLE_DIRECT 0x0E ///< Simplified direct >> access >> device >> >> // >> -// Other parameters, Max carried size is 512B * 128 = 64KB >> +// Other parameters, Max carried size is depanded on Pcd. >> +// The default of PcdUsbBootIoBlocks is 128. 512B * 128 = 64KB >> // >> -#define USB_BOOT_IO_BLOCKS 128 >> +#define USB_BOOT_IO_BLOCKS (FixedPcdGet32 >> (PcdUsbBootIoBlocks)) >> >> // >> // Retry mass command times, set by experience diff --git >> a/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassStorageDxe.inf >> b/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassStorageDxe.inf >> index 26d15c7679bf..40426512f884 100644 >> --- >> a/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassStorageDxe.inf >> +++ >> b/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassStorageDxe.inf >> @@ -60,6 +60,7 @@ [Sources] >> UsbMassDiskInfo.c >> >> [Packages] >> + MdeModulePkg/MdeModulePkg.dec >> MdePkg/MdePkg.dec >> >> [LibraryClasses] >> @@ -83,5 +84,8 @@ [Protocols] >> # EVENT_TYPE_RELATIVE_TIMER ## CONSUMES >> # >> >> +[FixedPcd] >> + gEfiMdeModulePkgTokenSpaceGuid.PcdUsbBootIoBlocks >> + >> [UserExtensions.TianoCore."ExtraFiles"] >> UsbMassStorageDxeExtra.uni >> diff --git a/MdeModulePkg/MdeModulePkg.dec >> b/MdeModulePkg/MdeModulePkg.dec index 455979386e3f..fc40745315a0 >> 100644 >> --- a/MdeModulePkg/MdeModulePkg.dec >> +++ b/MdeModulePkg/MdeModulePkg.dec >> @@ -999,6 +999,10 @@ [PcdsFixedAtBuild] >> # @Prompt Enable UEFI Stack Guard. >> >> gEfiMdeModulePkgTokenSpaceGuid.PcdCpuStackGuard|FALSE|BOOLEAN|0 >> x30001055 >> >> +## The Max blocks of usb transfer. The default is 128. >> +# @Prompt The Max blocks of usb transfer >> +gEfiMdeModulePkgTokenSpaceGuid.PcdUsbBootIoBlocks|128|UINT32|0x0 >> 000010B >> + >> [PcdsFixedAtBuild, PcdsPatchableInModule] >> ## Dynamic type PCD can be registered callback function for Pcd setting >> action. >> # PcdMaxPeiPcdCallBackNumberPerPcdEntry indicates the maximum >> number of callback function diff --git a/MdeModulePkg/MdeModulePkg.uni >> b/MdeModulePkg/MdeModulePkg.uni index f3fa616438b0..c996d6b4ebe0 >> 100644 >> --- a/MdeModulePkg/MdeModulePkg.uni >> +++ b/MdeModulePkg/MdeModulePkg.uni >> @@ -1243,3 +1243,7 @@ >> #string >> STR_gEfiMdeModulePkgTokenSpaceGuid_PcdEdkiiFpdtStringRecordEnableO >> nly_HELP #language en-US "Control which FPDT record format will be used >> to store the performance entry.\n" >> >> "On TRUE, the string FPDT >> record will be used to store every performance entry.\n" >> >> "On FALSE, the different >> FPDT record will be used to store the different performance entries." >> + >> +#string >> STR_gEfiMdeModulePkgTokenSpaceGuid_PcdUsbBootIoBlocks_PROMPT >> #language en-US "The Max blocks of usb transfer." >> + >> +#string >> STR_gEfiMdeModulePkgTokenSpaceGuid_PcdUsbBootIoBlocks_HELP >> #language en-US "The Max blocks of usb transfer. The default is 128." >> -- >> 1.9.1 >> >> _______________________________________________ >> edk2-devel mailing list >> edk2-devel@lists.01.org >> https://lists.01.org/mailman/listinfo/edk2-devel
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