Reviewed-by: Star Zeng <star.z...@intel.com>
Thanks,
Star
-----Original Message-----
From: Ming Huang [mailto:ming.hu...@linaro.org]
Sent: Thursday, March 22, 2018 3:44 PM
To: linaro-u...@lists.linaro.org; edk2-devel@lists.01.org
Cc: Zeng, Star <star.z...@intel.com>; Dong, Eric <eric.d...@intel.com>; Kinney,
Michael D <michael.d.kin...@intel.com>; Gao, Liming <liming....@intel.com>;
leif.lindh...@linaro.org; ard.biesheu...@linaro.org; guoh...@huawei.com;
wanghuiqi...@huawei.com; huangmin...@huawei.com; zhangjinso...@huawei.com;
mengfanr...@huawei.com; huangda...@hisilicon.com; wai...@126.com; Ming Huang
<ming.hu...@linaro.org>
Subject: [MdeModulePkg/Usb v2 1/1] MdeModulePkg/Usb: Replace macro
USB_BOOT_IO_BLOCKS
Booting from USB may fail while the macro USB_BOOT_IO_BLOCKS
set to 128 because the block size of some USB devices are exceeded
512, like some virtual CD-ROM from BMC, the block size is 2048.
So,the count blocks to transfer should be calculated by block
size of the USB devices.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ming Huang <ming.hu...@linaro.org>
---
MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.c | 16 ++++++++++++----
MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.h | 4 ++--
2 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.c
b/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.c
index b84bfd2d7290..3bf6e6a81f3c 100644
--- a/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.c
+++ b/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.c
@@ -814,11 +814,13 @@ UsbBootReadBlocks (
USB_BOOT_READ10_CMD ReadCmd;
EFI_STATUS Status;
UINT16 Count;
+ UINT16 CountMax;
UINT32 BlockSize;
UINT32 ByteSize;
UINT32 Timeout;
BlockSize = UsbMass->BlockIoMedia.BlockSize;
+ CountMax = (UINT16)(USB_BOOT_MAX_CARRY_SIZE / BlockSize);
Status = EFI_SUCCESS;
while (TotalBlock > 0) {
@@ -827,7 +829,7 @@ UsbBootReadBlocks (
// on the device. We must split the total block because the READ10
// command only has 16 bit transfer length (in the unit of block).
//
- Count = (UINT16)((TotalBlock < USB_BOOT_IO_BLOCKS) ? TotalBlock :
USB_BOOT_IO_BLOCKS);
+ Count = (UINT16)((TotalBlock < CountMax) ? TotalBlock : CountMax);
ByteSize = (UINT32)Count * BlockSize;
//
@@ -890,11 +892,13 @@ UsbBootWriteBlocks (
USB_BOOT_WRITE10_CMD WriteCmd;
EFI_STATUS Status;
UINT16 Count;
+ UINT16 CountMax;
UINT32 BlockSize;
UINT32 ByteSize;
UINT32 Timeout;
BlockSize = UsbMass->BlockIoMedia.BlockSize;
+ CountMax = (UINT16)(USB_BOOT_MAX_CARRY_SIZE / BlockSize);
Status = EFI_SUCCESS;
while (TotalBlock > 0) {
@@ -903,7 +907,7 @@ UsbBootWriteBlocks (
// on the device. We must split the total block because the WRITE10
// command only has 16 bit transfer length (in the unit of block).
//
- Count = (UINT16)((TotalBlock < USB_BOOT_IO_BLOCKS) ? TotalBlock :
USB_BOOT_IO_BLOCKS);
+ Count = (UINT16)((TotalBlock < CountMax) ? TotalBlock : CountMax);
ByteSize = (UINT32)Count * BlockSize;
//
@@ -966,18 +970,20 @@ UsbBootReadBlocks16 (
UINT8 ReadCmd[16];
EFI_STATUS Status;
UINT16 Count;
+ UINT16 CountMax;
UINT32 BlockSize;
UINT32 ByteSize;
UINT32 Timeout;
BlockSize = UsbMass->BlockIoMedia.BlockSize;
+ CountMax = (UINT16)(USB_BOOT_MAX_CARRY_SIZE / BlockSize);
Status = EFI_SUCCESS;
while (TotalBlock > 0) {
//
// Split the total blocks into smaller pieces.
//
- Count = (UINT16)((TotalBlock < USB_BOOT_IO_BLOCKS) ? TotalBlock :
USB_BOOT_IO_BLOCKS);
+ Count = (UINT16)((TotalBlock < CountMax) ? TotalBlock : CountMax);
ByteSize = (UINT32)Count * BlockSize;
//
@@ -1040,18 +1046,20 @@ UsbBootWriteBlocks16 (
UINT8 WriteCmd[16];
EFI_STATUS Status;
UINT16 Count;
+ UINT16 CountMax;
UINT32 BlockSize;
UINT32 ByteSize;
UINT32 Timeout;
BlockSize = UsbMass->BlockIoMedia.BlockSize;
+ CountMax = (UINT16)(USB_BOOT_MAX_CARRY_SIZE / BlockSize);
Status = EFI_SUCCESS;
while (TotalBlock > 0) {
//
// Split the total blocks into smaller pieces.
//
- Count = (UINT16)((TotalBlock < USB_BOOT_IO_BLOCKS) ? TotalBlock :
USB_BOOT_IO_BLOCKS);
+ Count = (UINT16)((TotalBlock < CountMax) ? TotalBlock : CountMax);
ByteSize = (UINT32)Count * BlockSize;
//
diff --git a/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.h
b/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.h
index 13a926035ceb..f8a0708350c7 100644
--- a/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.h
+++ b/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.h
@@ -65,9 +65,9 @@ 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 64KB.
//
-#define USB_BOOT_IO_BLOCKS 128
+#define USB_BOOT_MAX_CARRY_SIZE SIZE_64KB
//
// Retry mass command times, set by experience
--
1.9.1
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