1. 05 Nov, 2012 1 commit
    • Rob Herring's avatar
      ARM: implement debug_ll_io_init() · e5c5f2ad
      Rob Herring authored
      When using DEBUG_LL, the UART's (or other HW's) registers are mapped
      into early page tables based on the results of assembly macro addruart.
      Later, when the page tables are replaced, the same virtual address must
      remain valid. Historically, this has been ensured by using defines from
      <mach/iomap.h> in both the implementation of addruart, and the machine's
      .map_io() function. However, with the move to single zImage, we wish to
      remove <mach/iomap.h>. To enable this, the macro addruart may be used
      when constructing the late page tables too; addruart is exposed as a
      C function debug_ll_addr(), and used to set up the required mapping in
      debug_ll_io_init(), which may called on an opt-in basis from a machine's
      .map_io() function.
      Signed-off-by: default avatarRob Herring <rob.herring@calxeda.com>
      [swarren: Mask map.virtual with PAGE_MASK. Checked for NULL results from
       debug_ll_addr (e.g. when selected UART isn't valid). Fixed compile when
       either !CONFIG_DEBUG_LL or CONFIG_DEBUG_SEMIHOSTING.]
      Signed-off-by: default avatarStephen Warren <swarren@nvidia.com>
      Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
      e5c5f2ad
  2. 04 Nov, 2012 1 commit
  3. 03 Nov, 2012 15 commits
  4. 02 Nov, 2012 23 commits