> Why using 4.15.13 which is obsolete instead of using one of the Long > Term Support versions which are still maintained, like 4.14 or 4.19 ? > (see the complete list at https://www.kernel.org/category/releases.html)
Well, when I started this task 4.15.13 was probably the latest stable release and hence we decided to port this version. In the older kernel, we have the m8260_setup.c source file for our board where the function "io_block_mapping" was used to configure the non-standard IO port address starting at 0xe0000000 location. This address was passed as the base address followed by control address and IRQ number to the ide-core.ko module. In the new kernel we do not have an option to send these addresses and IRQ numbers as arguments to the driver. Instead the ide-generic.c source file in the new kernel uses the standard IO port values and IRQ values. I modified the code in the above file to used the addresses and IRQ number we used in the past. Also, added code in the "MMU_init" function call available under arch/PowerPC/init_32.c to setup the IO port address range by adding the "io_block_mapping" call and the required IO port address range. Is there anything else that needs to be added or how can we configure the desired IO address range in the new kernel? Thanks, Sachin -- Sent from: http://linuxppc.10917.n7.nabble.com/linuxppc-dev-f3.html