Hi All, I have been working on porting Linux-4.15.13 kernel on our existing MPC8270 processor board. For this exercise, I have used pq2fads as a reference board, its associated device tree and used cuImage for building the kernel. I am facing an issue with the generic IDE flash controller driver in the new kernel source where it fails to detect the Flash controller connected to 2GB NAND flash available on the board. We have used non-standard IO port addresses for this driver in the older kernel and I have added the required code in the new kernel to setup the set of addresses that we need as IO ports. Also, modified the code in the drivers/ide/ source to use the non-standard IO port address. However, during boot up while inserting the module I continue to get the below errors.
[ 4.116587] ide: forcing hda as a disk (3543/255/63) [ 4.184190] Probing IDE interface ide0... [ 4.226330] Machine check in kernel mode. [ 4.233809] Caused by (from SRR1=49030): [ 4.233826] Transfer error ack signal [ 4.249263] IN from bad port e000000e at 004123ef I understand that this is an addressing issue but not sure exactly what am I missing to fix the problem. Can you provide me your inputs on debugging this issue? Thanks, Sachin. -- Sent from: http://linuxppc.10917.n7.nabble.com/linuxppc-dev-f3.html