Hi, I am using 2.6.9 for a mpc8280 project, and am having trouble using dpram1 from offset zero, which I need for a mcc hdlc driver.
In the file include/asm-ppc/cpm2.h there is a constant CPM_DATAONLY_BASE In the same file the code comment say that the first 128 bytes are used for SMC1 and SMC2. When I examine the smc (cpm_uart) driver i do not find any reference to this region of the dpram1. I have replaced the calls to cpm_dpalloc with cpm_dpalloc_fixed and an adress way up in the dpram1 region. My question is; do you know which code is using the dpram1 addresses below CPM_DATAONLY_BASE ? This region must be used by something (smc ?), because when I clear from offset 0x00 to 0x80 the serial port stop responding. I can ssh to the device and things seems to be normal util I try to reboot the system, whereupon everything hangs. I am stuck, so if you have any suggestions, please advice. Regards, Morten
