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The preloader reads the following information from mkimage header:
1. Image magic number - determines if the image is a valid boot image
2. Image data size - the length of the boot image to be copied
3. Data load address - the entry point of the boot image
4. Operating system - determines if the image is a U-boot image or another type of image
5. Image name - the name of the boot image
6. Image CRC - the checksum value of the boot image
Figure 7-7: mkimage Header Layout from mkimage Tools
Image name
Data load address
Magic number
Entry point
Header CRC
Image CRC
Timestamp
OS
arch
type
compression
Image data size
0x0040
0x0030
0x0020
0x0010
0x0000
0x4 0x8 0xC 0xD 0xE 0xF
mkimage invokes the mkimage tool and the --help option provides the tool description and option
information.
mkimage Tool Options
The --help option of the mkimage tool provides the tool description and option information.
$ mkimage
Usage: mkimage -l image
-l ==> list image header information
mkimage [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d
data_file[:data_file...] image
-A ==> set architecture to 'arch'
-O ==> set operating system to 'os'
-T ==> set image type to 'type'
-C ==> set compression type 'comp'
-a ==> set load address to 'addr' (hex)
-e ==> set entry point to 'ep' (hex)
-n ==> set image name to 'name'
-d ==> use image data from 'datafile'
-x ==> set XIP (execute in place)
mkimage [-D dtc_options] -f fit-image.its fit-image
mkimage -V ==> print version information and exit
mkimage Tool Image Creation
Example 7-7: Creating a U-boot Image
mkimage –A arm –T firmware –C none –O u-boot –a 0x08000040 –e 0 –n “U-Boot
2011.12 for SOCFGPA board” –d u-boot.bin u-boot.img
ug-1137
2013.05.03
mkimage Tool Options
7-21
HPS Preloader User Guide
Altera Corporation
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- 101 Innovation Drive 1
- San Jose, CA 95134 1
- Contents 2
- Overview 6
- Device Tree Binary 7
- Related Information 10
- Installation Folders 11
- Installing the SoC EDS 11
- Licensing 13
- Activating the License 14
- 5. Click Next 17
- Jumper Settings 21
- Start Eclipse 25
- Create New Project 25
- Set the Linker Script 28
- Write Application Source Code 31
- Build Application 34
- TestProject.axf executable 35
- Debug Application 36
- Create a New Project 45
- Figure 4-6: New Project 46
- Create a Linker Script 48
- Figure 4-14: Settings 55
- Figure 4-16: New Source File 57
- Figure 4-17: New Source File 58
- Figure 4-19: Build Project 60
- Starting the Eclipse IDE 71
- Application Console 76
- Sequence Sample Application 85
- Function 85
- Used Hardware 85
- Libraries APIs 85
- Description 85
- Debugging the Kernel 92
- Configuring Linux 97
- File Name Description 100
- Altera Corporation 101
- Getting Started Guides 101
- Send Feedback 101
- Figure 4-59: Browse Target 105
- 2014.12.15 108
- Getting Started with Tracing 111
- Figure 4-67: Trace Into ETF 112
- FPGA Triggering HPS Example 119
- HPS Triggering FPGA Example 123
- ARM DS-5 Altera Edition 126
- Bare-metal Project Management 127
- Creating Project 130
- Build Settings 134
- Build > Settings 135
- Creating a Project 136
- Figure 5-10: New Project 137
- Baremetal GCC. Click Finish 138
- Linker Script 140
- + Build > Settings 146
- Debugging 147
- Debug Configuration Options 150
- Connection Options 151
- Files Options 156
- Debugger Options 156
- RTOS Awareness 157
- Arguments 158
- Environment 158
- DTSL Options 159
- Cross Trigger Settings 160
- Trace Buffer Settings 161
- Cortex-A9 Settings 162
- STM Settings 163
- ETR Settings 163
- ETF Settings 164
- Embedded Command Shell 165
- HPS Preloader User Guide 166
- Hardware Handoff Files 168
- Using .tcl Scripts 169
- Option Required Description 171
- BSP Settings 174
- 2013.05.03 175
- Reset Assert Settings 179
- Preloader Compilation 180
- Preloader Image Tool 181
- Tool Usage 183
- Output Image Layout 184
- Hardware Library 188
- Feature Description 189
- Subscribe 191
- HPS Flash Programmer 192
- Option Short 193
- Required Description 193
- Supported Memory Devices 196
- Bare-Metal Compiler 198
- SD Card Boot Utility 199
- Tool Options 200
- Linux Compiler 202
- Device Tree Generator 205
- Yocto Plugin 206
- Support and Feedback 207
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