> You're probably getting to the point where udbg is disabled because the > real serial driver is trying to take over -- and something's going > wrong with the real serial port driver. Check to make sure the brg > config is correct (both the input clock and the baud rate you're trying > to switch to). Commenting out the call to cpm_set_brg can be > a quick way of determining if that's the problem.
It seems that the last CP command RESTART_TX never completes in the cpm_uart_console_setup(). I commented out the writes to brgc1 in cpm_setbrg() in cpm1.c so that the brgc1 value stays the same as previously set. The registers related to SMC1 are dumped below before the last RESTART_TX command. The CPCR was 0x0090. But after issuing the RESTART_TX command the CPCR kept at 0x0691. Is there any other obvious reason for CPM not completing the command? It got to be something related to the settings. BDI>rd cpcr cpcr : 0x0090 144 BDI>rd rccr rccr : 0x0001 1 BDI>rd rmds rmds : 0x00 0 BDI>rd rctr1 rctr1 : 0x0000 0 BDI>rd rctr2 rctr2 : 0x0000 0 BDI>rd rctr3 rctr3 : 0x802e -32722 BDI>rd rctr4 rctr4 : 0x802c -32724 BDI>rd rter rter : 0x0000 0 BDI>rd rtmr rtmr : 0x0000 0 BDI>rd brgc1 brgc1 : 0x00010618 67096 BDI>rd smcmr1 smcmr1 : 0x4823 18467 BDI>rd smce1 smce1 : 0x00 0 BDI>rd smcm1 smcm1 : 0x00 0 Thanks, -Shawn. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
