[U-Boot-Users] Reset doesn't work on the 440EP Bamboo reference board
Hi,
I have been trying to get U-Boot and Linux running on the AMCC 440EP "Bamboo" reference board. Most U-Boot commands are working. However, I've got problems about reset command and switch.
First, reset command does not work except after cp.b command performed (i.e. cp.b 100000 fff80000 80000). I don't know why it works well after cp.b command. Reboot command in Linux doesn't work neither. U-Boot version is 1.1.3 and Linux kernel is 2.6.13. Is it related to the same reason?
Second, the reset switch does not work. I've been confirmed that SYSTEM_RESET line is getting pulled down when I push the reset switch.
When I try to get PIBS instead of U-Boot on the same board, the above problems haven't happened.
Had the problems been discussed before in this list? I can't find any of conversations about them. If so, give me the url please.
Let me know how to fix them up.
Thanks in advance,
Youngchul Bang
Hi Youngchul,
On Tuesday 13 September 2005 06:30, Youngchul Bang wrote:
I have been trying to get U-Boot and Linux running on the AMCC 440EP "Bamboo" reference board. Most U-Boot commands are working. However, I've got problems about reset command and switch.
I just checked this problem with our bamboo board and a current U-Boot version: No problem here:
Hit any key to stop autoboot: 0 => reset
U-Boot 1.1.4 (Aug 24 2005 - 11:12:52)
AMCC PowerPC 440EP Rev. B Board: Bamboo - AMCC PPC440EP Evaluation Board VCO: 800 MHz CPU: 400 MHz PLB: 100 MHz OPB: 50 MHz EPB: 25 MHz I2C: ready DRAM: 192 MB FLASH: 5 MB PCI: Bus Dev VenId DevId Class Int In: serial Out: serial Err: serial NAND: 64 MB
Type "run flash_nfs" to mount root filesystem over NFS
Hit any key to stop autoboot: 0
First, reset command does not work except after cp.b command performed (i.e. cp.b 100000 fff80000 80000). I don't know why it works well after cp.b command. Reboot command in Linux doesn't work neither. U-Boot version is 1.1.3 and Linux kernel is 2.6.13. Is it related to the same reason?
Hmmm. U-Boot version 1.1.3 covers over 1/2 year of code versions. Please use the current version (top cvs) and give it a nother try. As you may have noticed, the AMCC 4xx boards have received a major cleanup in the last weeks.
Second, the reset switch does not work. I've been confirmed that SYSTEM_RESET line is getting pulled down when I push the reset switch.
Do I understand this right: You push the reset button, and the board does not reset! Strange.
When I try to get PIBS instead of U-Boot on the same board, the above problems haven't happened.
Had the problems been discussed before in this list? I can't find any of conversations about them. If so, give me the url please.
No.
Let me know how to fix them up.
See above. Try the current version and let me know, if the problem still occurs.
Another question: Do you have a debugger connected while resetting the board?
Best regards, Stefan
Hi Stefan,
Thank you for your reply.
On 9/13/05, Stefan Roese sr@denx.de wrote:
Hmmm. U-Boot version 1.1.3 covers over 1/2 year of code versions. Please use the current version (top cvs) and give it a nother try. As you may have noticed, the AMCC 4xx boards have received a major cleanup in the last weeks.
I tried the current version. Reset command works well.
Second, the reset switch does not work. I've been confirmed that SYSTEM_RESET line is getting pulled down when I push the reset switch.
Do I understand this right: You push the reset button, and the board does not reset! Strange.
I forgot I deleted some of codes in flash_get_size() when I added support for SST flash. It's the reason for my problems. My mistake.
Another question: Do you have a debugger connected while resetting the board?
No. I don't
Best regards,
Youngchul
participants (2)
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Stefan Roese -
Youngchul Bang (방영철)