Hi,
I am working on that board SAMA5D27 . But I have nothing to boot, I want to know following things :
1) From where I can get its nand flash image .
2) How I can port that image in nand flash .
3) Booting steps and hardware connection steps .
If anyone know about it please let me know . Thank you so much in advance !!
SAMA5D27
Moderator: nferre
- blue_z
- Location: USA
Post
Re: SAMA5D27
Exactly what board are you referring to?
You need to download (and study) the User Guide (for whatever board that you have) as well as the SAM-BA 3.x utility from the Microchip site.
You can download demo builds from the Linux4SAM site.
Regards
You need to download (and study) the User Guide (for whatever board that you have) as well as the SAM-BA 3.x utility from the Microchip site.
You can download demo builds from the Linux4SAM site.
Regards
Post
Re: SAMA5D27
Hi ,
Thanks for reply I am working on atmel SAMA5D27 . I need to know the steps of flashing in nand memory . I am using linux ubuntu . I am studying and there have no steps on the web site how I can write in nand flash . Can you please help me .
Thanks for reply I am working on atmel SAMA5D27 . I need to know the steps of flashing in nand memory . I am using linux ubuntu . I am studying and there have no steps on the web site how I can write in nand flash . Can you please help me .
Post
Re: SAMA5D27
I am using ATSAMA5D27C-D1G-CU . Please let me know how I can make custom linux os for it and how I can port in its nand flash memory . My hosting machine is linux.
Post
SAMA5D27
Hi experts ,
Can anyone suggest me for step by step guide SAMA5D27C-D1G-CU porting guide .
I have following host machine :
1) Ubuntu
2) samba flashing tool
I want to know about following things :
Please help me I have very urgency . Thanks in advance !!
Can anyone suggest me for step by step guide SAMA5D27C-D1G-CU porting guide .
I have following host machine :
1) Ubuntu
2) samba flashing tool
I want to know about following things :
- Where from I can get nand flash img for my board SAMA5D27C-D1G-CU and how I can customise it for fast booting
- Step by step guide port img in nand flash using samba or any other interface
- Which interface I can use for check booting and get console of my board
- How I can make any c application for my board and run on it .
Please help me I have very urgency . Thanks in advance !!
- blue_z
- Location: USA
Post
Re: SAMA5D27
You were asked one simple question.
Your responses are only the name of a chip and not a board.
Responses to your requests that might be more specific than what is already given would require the name of a board.
Regards
Your responses are only the name of a chip and not a board.
Responses to your requests that might be more specific than what is already given would require the name of a board.
Regards
Post
Re: SAMA5D27
Hi ,
Sorry !! But that is a custom board I am using SAMA5B27-SOM1 . Please help me !!
Sorry !! But that is a custom board I am using SAMA5B27-SOM1 . Please help me !!
Post
Re: SAMA5D27
I write the img in nand flash and when I make reset command with samba it is boot up and green led starts blinking but I am unable to read the console .
process :
I connected my board with usb (board side micro point and pc side normal usb connector) . I am able to see ttyACM0 in dmesg . The light of board is constant red . Then I open minicom with following command :
sudo minicom -D /dev/ttyACM0
Now minicom is opened but I can see anything here I mean boot logs .
After that I trying to reset the board using samba reset command But its not working because I opened ttyACM0 in minicom . when I kill the minicom and then enter reset command it works and green led again blanking . I don't know what is happening .
Can Anyone help me please.
process :
I connected my board with usb (board side micro point and pc side normal usb connector) . I am able to see ttyACM0 in dmesg . The light of board is constant red . Then I open minicom with following command :
sudo minicom -D /dev/ttyACM0
Now minicom is opened but I can see anything here I mean boot logs .
After that I trying to reset the board using samba reset command But its not working because I opened ttyACM0 in minicom . when I kill the minicom and then enter reset command it works and green led again blanking . I don't know what is happening .
Can Anyone help me please.
- blue_z
- Location: USA
Post
Re: SAMA5D27
If you have a custom board, then there is no pre-built image to download and install to NAND or any other nonvolatile medium.
In theory you only need to customize AT91Bootstrap, U-Boot, and the DeviceTree blob while using the Linux kernel and rootfs from a Linux4SAM demo.
You would be better off first building a custom kernel with initramfs (or boot from SD card), and then you can un-tar a rootfs archive to the UBIFS in NAND.
There is no "step by step guide" for your custom board.
You will have to adapt Microchip/Atmel/Linux4SAM guides for similar boards to your situation.
Regards
In theory you only need to customize AT91Bootstrap, U-Boot, and the DeviceTree blob while using the Linux kernel and rootfs from a Linux4SAM demo.
You would be better off first building a custom kernel with initramfs (or boot from SD card), and then you can un-tar a rootfs archive to the UBIFS in NAND.
There is no "step by step guide" for your custom board.
You will have to adapt Microchip/Atmel/Linux4SAM guides for similar boards to your situation.
Regards
Post
Re: SAMA5D27
Hi blue_z ,
Thanks for reply .
I am doing as you said . But right now I want access serial console using minicom software in my linux machine but unable .
What I did ?
I give power to the board with usb , So when I connected usb with board and my linux machine there have comes a node in /dev/ttyACM0 . After dmesg there have usb information printed .
Then I connected serial port DB9 with board and my linux machine but now there is nothing happens I mean no new node is created and after dmesg there is no log for serial port connection .
After that I entered following command :
sudo minicom -D /dev/ttyACM0
But I did not get anything on my serial console . Can you please suggest me .
Thanks !!
Thanks for reply .
I am doing as you said . But right now I want access serial console using minicom software in my linux machine but unable .
What I did ?
I give power to the board with usb , So when I connected usb with board and my linux machine there have comes a node in /dev/ttyACM0 . After dmesg there have usb information printed .
Then I connected serial port DB9 with board and my linux machine but now there is nothing happens I mean no new node is created and after dmesg there is no log for serial port connection .
After that I entered following command :
sudo minicom -D /dev/ttyACM0
But I did not get anything on my serial console . Can you please suggest me .
Thanks !!
Post
Re: SAMA5D27
Hi ,
It is working now !!
Can we by-pass uboot and load kernel from bootstrap . Is there any guide available for that .
Thanks !!
It is working now !!
Can we by-pass uboot and load kernel from bootstrap . Is there any guide available for that .
Thanks !!
Post
Re: SAMA5D27
Hi ,
Anyone here who can guide me for idle steps to minimize boot time of linux os for sama5d27 . Please let me know from where I can start ?
Thanks !!
Anyone here who can guide me for idle steps to minimize boot time of linux os for sama5d27 . Please let me know from where I can start ?
Thanks !!
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