[U-Boot-Users] Re: Interrupt management under PPC4xx platform

[llandre]

>I agree, SDRAM should be OK!
>
>If you enable the "irq" command (CFG_CMD_IRQ), do you see any irq's
>incrementing at all?
>
>This is what I see on a PPC405GP(r):
>
>=> tftp 100000 /tftpboot/pImage
>ENET Speed is 100 Mbps - FULL duplex connection
>ARP broadcast 1
>TFTP from server 10.0.18.190; our IP address is 10.0.18.160
>Filename '/tftpboot/pImage'.
>Load address: 0x100000
>Loading: #################################################################
>          #################################################################
>          ##########
>done
>Bytes transferred = 712344 (ade98 hex)
>=> irqs
>
>Interrupt-Information:
>Nr  Routine   Arg       Count
>09  01fc3f84  00000000  0
>10  01fc3f84  00000000  0
>11  01fc3f84  00000000  0
>12  01fc3f84  00000000  1394
>13  01fc3f84  00000000  0
>14  01fc3f84  00000000  0
>15  01fc3f84  00000000  0
>
>
>Sorry, but I haven't digged into the PPC405EP this deep. It could be, that
>there is a difference in the implementation. Please check the above irq test
>at first...
>
>
>Best regards,
>Stefan.

No irq is incrementing:

U-Boot 0.2.0 (Apr 14 2003 - 16:41:00)

CPU:   IBM PowerPC 405EP Rev. A at 266.666 MHz (PLB=133, OPB=66, EBC=66 MHz)
            PCI async ext clock used (sync mode not supported), internal 
PCI arbiter enabled
            16 kB I-Cache 16 kB D-Cache
Board: ### No HW ID - assuming WALNUT405
I2C:   ready
DRAM:  128 MB
Top of RAM usable for U-Boot at: 08000000
Reserving 192k for U-Boot at: 07fd0000
Reserving 132k for malloc() at: 07faf000
Reserving 112 Bytes for Board Info at: 07faef90
Reserving 44 Bytes for Global Data at: 07faef64
Stack Pointer at: 07faef48
New Stack Pointer is: 07faef48
Now running in RAM - U-Boot at: 07fd0000
FLASH: 512 kB
[board.c, 767] Calling env_relocate ...
env_relocate[203] offset = 0x8050000
env_relocate[221] malloced ENV at 07faf008
In:    serial
Out:   serial
Err:   serial
KGDB:  kgdb ready
ready
U-Boot relocated to 07fd0000
### main_loop entered: bootdelay=3

### main_loop: bootcmd="tftpboot 0x400000 vmlinux.PPCBoot"
Hit any key to stop autoboot:  0
ENET Speed is 10 Mbps - HALF duplex connection
ARP broadcast 1

Abort
=> irqs

Interrupt-Information:
Nr  Routine   Arg       Count
09  07fd4988  00000000  0
10  07fd4988  00000000  0
11  07fd4988  00000000  0
12  07fd4988  00000000  0
13  07fd4988  00000000  0
14  07fd4988  00000000  0
15  07fd4988  00000000  0
=>

It is clear that if the Ethernet RX interrupt is not generated, no frame 
will be received. I think I'll look at te Ethernet driver in more detail.


llandre