Difference between revisions of "i.MX53 SODIMM PC Loading bootloader"
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[[image:i.MX25_SODIMM_Base_Board-Serial_connection.jpg|400px]]<br /><br /> | [[image:i.MX25_SODIMM_Base_Board-Serial_connection.jpg|400px]]<br /><br /> | ||
| − | A successful connection is established only if the following settings are applied (115200, 8n1):<br /> | + | A successful connection is established only if the following serial port settings are applied (115200, 8n1):<br /> |
[[image:i.MX25_SODIMM_Base_Board-Serial_console_settings.jpg|600px]]<br /><br /> | [[image:i.MX25_SODIMM_Base_Board-Serial_console_settings.jpg|600px]]<br /><br /> | ||
== Selecting boot mode == | == Selecting boot mode == | ||
| − | In order to disable the direct boot, H902 jumper (BOOTMODE) must be placed between pins 1 and 2. This enables the '''serial boot''' and loading files over Telnet service. The main reason for using this mode is to rewrite bootloader image in case | + | In order to disable the direct boot, H902 jumper (BOOTMODE) must be placed between pins 1 and 2. This enables the '''serial boot''' and loading files over Telnet service. The main reason for using this mode is to rewrite bootloader image in case of update or recovery.<br /><br /> |
| − | '''Direct Boot''' (Boot from E-Fuses) is selected | + | '''Direct Boot''' (Boot from E-Fuses) is selected when BOOTMODE jumper pins 2 and 3 are shortened. This is the default mode of module operation.<br /><br /> |
{|style="text-align:center;" | {|style="text-align:center;" | ||
| Line 59: | Line 59: | ||
== Loading bootloader == | == Loading bootloader == | ||
| − | The following commands need to be placed inside Localhost Telnet session and executed one by one. Console logs are included for comparison: | + | The following commands need to be placed inside Localhost Telnet session and executed one by one. Console logs are included for comparison: |
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
reset_halt | reset_halt | ||
| Line 88: | Line 88: | ||
[[image:i.MX53_SODIMM_PC-Development_Kit-Bootloader_loaded.jpg|600px]]<br /><br /> | [[image:i.MX53_SODIMM_PC-Development_Kit-Bootloader_loaded.jpg|600px]]<br /><br /> | ||
| − | As the | + | As the new Barebox is stored in SRAM only at this point, switching the module off causes Barebox erase. To store Barebox and use it automatically after power on, flashing the image is required. Follow [[i.MX53_SODIMM_PC_Flashing_images|this section]] to do so. |
Revision as of 10:35, 3 April 2021
This page shows the steps how to initiate On-Chip Debugging and load bootloader into i.MX53 SODIMM PC - Development kit.
JTAG Debugger and Programmer Installation
- Connect JTAG Cable to USB port on the computer. JTAG device should be automatically recognized and prepared for usage.
- Download OpenOCD v0.6.0 software
- Unzip the files
Running Open On-Chip Debugger
Locate the folder where the software has been unpacked. Run OpenOCD utility in command line (by using Total Commander or Windows Command Prompt):
openocd -f vmx53w.cfg
Debugging session is opened and running:
600px
Connecting to Open On-Chip Debugger session
Using Windows Telnet Client
Click on Start/Run (or press Windows key + R), and open the Telnet session using 4444 port:
telnet localhost 4444
Telnet session is active and ready for use:
600px
Using terminal emulator
To open Telnet service using TeraTerm program, click on File/New Connection, check TCP/IP and type 4444 into TCP port# field. IP adrress to connect to is localhost (127.0.0.1):
400px
TeraTerm session is active and ready for use:
600px
Establishing serial connection
Open TeraTerm program, click on File/New Connection, check Serial and choose the port which was assigned to the JTAG device:
400px
A successful connection is established only if the following serial port settings are applied (115200, 8n1):
600px
Selecting boot mode
In order to disable the direct boot, H902 jumper (BOOTMODE) must be placed between pins 1 and 2. This enables the serial boot and loading files over Telnet service. The main reason for using this mode is to rewrite bootloader image in case of update or recovery.
Direct Boot (Boot from E-Fuses) is selected when BOOTMODE jumper pins 2 and 3 are shortened. This is the default mode of module operation.
|
|
| Serial Boot | Direct Boot (Boot from E-Fuses) |
Loading bootloader
The following commands need to be placed inside Localhost Telnet session and executed one by one. Console logs are included for comparison:
reset_halt
step
resume
vmx53_init
boot
Barebox is loaded into the i.MX53 SODIMM PC Module SRAM and executed:
600px
As the new Barebox is stored in SRAM only at this point, switching the module off causes Barebox erase. To store Barebox and use it automatically after power on, flashing the image is required. Follow this section to do so.