对照UG1209的SD卡启动方式，
1、在Boot Sequence for SD-Boot时，若添加了bit文件，会在加载bit文件时报出
XFSBL_ERROR_BITSTREAM_LOAD_FAIL；
2、若在Boot Sequence for SD-Boot，生成BOOT.bin时不添加bit文件，只添加fsbl.elf、pmu.elf、bl31.elf、u-boot.elf，会在
In Stage 4时卡住，且不提示任何错误信息。
注：以下为pin map（BD的设置中目前只添加了IIC/UART0/SD1）,
和问题1和问题2对应的log信息。
问题2log：
Xilinx Zynq MP First Stage Boot Loader
Release 2018.2 Feb 20 2019 - 15:42:49
Reset Mode : System Reset
Platform: Silicon (4.0), Cluster ID 0x80000000
Running on A53-0 (64-bit) Processor, Device Name: XCZU3EG
Processor Initialization Done
================= In Stage 2 ============
SD1 Boot Mode
SD: rc= 0
File name is BOOT.BIN
Multiboot Reg : 0x0
Image Header Table Offset 0x8C0
*****Image Header Table Details********
Boot Gen Ver: 0x1020000
No of Partitions: 0x3
Partition Header Address: 0x440
Partition Present Device: 0x0
Initialization Success
======= In Stage 3, Partition No:1 =======
UnEncrypted data Length: 0x3140
Data word offset: 0x3140
ation Load Address: 0xFFFEA000 .
Execution Address: 0xFFFEA000
Data word offset: 0xE970
Partition Attributes: 0x117
Partition 1 Load Success
======= In Stage 3, Partition No:2 =======
UnEncrypted data Length: 0x4366E
Data word offset: 0x4366E
Total Data word length: 0x4366E
Destination Load Address: 0x8000000
Execution Address: 0x8000000
Data word offset: 0x11AB0
Partition Attributes: 0x114
Partition 2 Load Success
All Partitions Loaded
================= In Stage 4 ============
AIB ack status: 0x0
AIB ack status: 0x0
PM Init Success
Protection configuration applied
ATF running on XCZU3EG/silicon v4/RTL5.1 at 0xfffea000
NOTICE: BL31: Secure code at 0x0
NOTICE: BL31: Non secure code at 0x8000000
NOTICE: BL31: START.
NOTICE: BL31: v1.4(release):xilinx-v2018.2-dirty
NOTICE: BL31: Built : 15:35:41, Feb 20 2019
NOTICE: BL31: END.
P
问题1log：
Release 2018.2 Feb 19 2019 - 14:21:36
Reset Mode : System Reset
Platform: Silicon (4.0), Cluster ID 0x80000000
Running on A53-0 (64-bit) Processor, Device Name: XCZU3EG
Processor Initialization Done
================= In Stage 2 ============
SD1 Boot Mode
SD: rc= 0
File name is BOOT.BIN
Multiboot Reg : 0x0
Image Header Table Offset 0x8C0
*****Image Header Table Details********
Boot Gen Ver: 0x1020000
No of Partitions: 0x5
Partition Header Address: 0x440
Partition Present Device: 0x0
Initialization Success
======= In Stage 3, Partition No:1 =======
UnEncrypted data Length: 0x4E86
Data word offset: 0x4E86
Total Data word length: 0x4E86
Destination Load Address: 0xFFDC0000
Execution Address: 0xFFDC9470
Data word offset: 0x6AB0
Partition Attributes: 0x83E
Partition 1 Load Success
======= In Stage 3, Partition No:2 =======
UnEncrypted data Length: 0x339
Data word offset: 0x339
Total Data word length: 0x339
Destination Load Address: 0xFFDD7F80
Execution Address: 0x0
Data word offset: 0xB940
Partition Attributes: 0x83E
Partition 2 Load Success
======= In Stage 3, Partition No:3 =======
UnEncrypted data Length: 0x100
Data word offset: 0x100
Total Data word length: 0x100
Destination Load Address: 0xFFDDF6E0
Execution Address: 0x0
Data word offset: 0xBC80
Partition Attributes: 0x83E
PMU Firmware 2018.2 Feb 19 2019 14:00:03
PMU_ROM Version: xpbr-v8.1.0-0
DAP_WAKE (MOD-1): Initialized.
LEGACY PWR UP/DN/ISO (MOD-2): Initialized.
Partition 3 Load Success
======= In Stage 3, Partition No:4 =======
UnEncrypted data Length: 0x153E27
Data word offset: 0x153E27
Total Data word length: 0x153E27
Destination Load Address: 0xFFFFFFFF
Execution Address: 0x0
Data word offset: 0xBD80
Partition Attributes: 0x26
Destination Device is PL, changing LoadAddress
XPFW: Calling ROM PWRUP Handler..Done
XPFW: Calling ROM Isolation Handler..Done
Non authenticated Bitstream download to start now
DMA transfer done
XFSBL_ERROR_BITSTREAM_LOAD_FAIL
Partition 4 Load Failed, 0x37
