• Max Filippov's avatar
    xtensa: minimize use of PLATFORM_DEFAULT_MEM_{ADDR,SIZE} · 3de00482
    Max Filippov authored
    
    
    Now that the kernel load address and KSEG physical base address have
    their own Kconfig symbols PLATFORM_DEFAULT_MEM seems redundant. It makes
    little sense to use it in MMU configurations instead of KSEG_PADDR.
    In noMMU configurations there's no explicit KSEG, so it's still useful
    for the early cache initialization and definition of ARCH_PFN_OFFSET,
    which affects mem_map size.
    
    - limit it to noMMU; MMU variants have XCHAL_KSEG_PADDR and
      XCHAL_KSEG_SIZE;
    - don't use it to define TASK_SIZE or MAX_LOW_PFN: first doesn't make
      any difference in noMMU, second is meaningless as there's no high
      memory;
    - don't add default physical memory region: memory layout should come
      from the DT, bootloader tags, or memmap= command line parameter.
    
    Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
    3de00482