Author Topic: ppc405gp, uboot is too slow with tftpboot and diskboot  (Read 104 times)

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Offline legacy

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ppc405gp, uboot is too slow with tftpboot and diskboot
« on: September 22, 2019, 11:41:51 am »
Code: [Select]
# diskboot 10000 0:2
Loading from ide device 0, partition 2:
Name: kernel 
Type: Apple_UNIX_SVR2, uImage
..... done

Code: [Select]
# diskboot 3000000 0:3
Loading from ide device 0, partition 3:
Name: rootfs 
Type: Apple_UNIX_SVR2, raw
..... done

So, I have added a couple of features to u-boot to have the possibility to support microdrive in true_IDE mode and to load in ram the content of any partition.

A lot of work, not it works, but ... performance is not so good.

~8MB, load_time_via_tftpboot=12sec, load_time_via_diskboot=7sec
~70MB, load_time_via_tftpboot=104sec, load_time_via_diskboot=65sec


tftpboot is an option, there was a bug preventing the Ethernet to auto-negotiate the 100Mbps speed, now the problem is solved, but again ... performance is not so good.


So I wonder about the most likely performance fault location on a u-boot on PPC405GP  :-//


anyone has ever worked on it?
« Last Edit: September 22, 2019, 11:51:00 am by legacy »
 


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