[OpenWrt-Devel] uboot-lantiq cgu settings for ramboot image

[Ben Mulvihill]

Hello,

I am trying to build uboot-lantiq for the BT Home Hub 3A (lantiq
ar9), and am wondering where to initialise the cgu, in the case
of a ramboot image for uart booting. Normally the cgu is initialised
in lowlevel_init, but that code is bypassed in ramboot images. The 
result is that the board boots with the wrong cgu settings, which
sends the console haywire. So far I have tried two solutions:

- putting the following lines in board_early_init_f:

  #define REG32(addr) *((volatile u32 *)(addr))
        REG32(0xbf103010) = 0x80;
        REG32(0xbf103014) = 0x01;

  This fixes the console, but breaks ethernet. I am wondering
  whether this is because by putting this code in this place, I
  am altering the cgu settings after setting up ram. Is this
  admissible?

- adding the same two register settings to the start of the
  ddr_settings file generated by lantiq_ram_init_uart.awk .
  However, the resulting image gives a download error and won't
  boot at all.

Any suggestions will be gratefully received!

Ben
_______________________________________________
openwrt-devel mailing list
openwrt-devel at lists.openwrt.org
https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel