23 Jan, 2013

1 commit

• 2475ff9d2   arm64: Add simple earlyprintk support ... Browse Code »

  This patch adds support for "earlyprintk=" parameter on the kernel
  command line. The format is:

  earlyprintk=[,][,]

  where is the name of the (UART) device, e.g. "pl011", is
  the I/O address. The aren't currently used.

  The mapping of the earlyprintk device is done very early during kernel
  boot and there are restrictions on which functions it can call. A
  special early_io_map() function is added which creates the mapping from
  the pre-defined EARLY_IOBASE to the device I/O address passed via the
  kernel parameter. The pgd entry corresponding to EARLY_IOBASE is
  pre-populated in head.S during kernel boot.

  Only PL011 is currently supported and it is assumed that the interface
  is already initialised by the boot loader before the kernel is started.

  Signed-off-by: Catalin Marinas
  Acked-by: Arnd Bergmann

  Catalin Marinas

  2013-01-23 01:51:01 +0800  

30 Nov, 2012

1 commit

• 715a7119e   Documentation: Fixes a word in Documentation/arm64/memory.txt ... Browse Code »

  Fixes a term in Documentation/arm64/memory.txt
  The modification is based on Catalin Marinas 's
  suggestion:
  "memory" in "ffffffc000000000 ffffffffffffffff 256GB memory"
  should be treated as "kernel logical memory map".

  Signed-off-by: Fu Wei
  Signed-off-by: Catalin Marinas

  Tekkaman Ninja

  2012-11-30 00:33:18 +0800  

23 Oct, 2012

1 commit

• e3978cded   arm64: Move PCI_IOBASE closer to MODULES_VADDR ... Browse Code »

  This is to reuse the same pmd table that is sparsely populated with
  the modules space.

  Signed-off-by: Catalin Marinas

  Catalin Marinas

  2012-10-23 22:30:51 +0800  

17 Sep, 2012

2 commits

• 4f04d8f00   arm64: MMU definitions ... Browse Code »

  The virtual memory layout is described in
  Documentation/arm64/memory.txt. This patch adds the MMU definitions for
  the 4KB and 64KB translation table configurations. The SECTION_SIZE is
  2MB with 4KB page and 512MB with 64KB page configuration.

  PHYS_OFFSET is calculated at run-time and stored in a variable (no
  run-time code patching at this stage).

  On the current implementation, both user and kernel address spaces are
  512G (39-bit) each with a maximum of 256G for the RAM linear mapping.
  Linux uses 3 levels of translation tables with the 4K page configuration
  and 2 levels with the 64K configuration. Extending the memory space
  beyond 39-bit with the 4K pages or 42-bit with 64K pages requires an
  additional level of translation tables.

  The SPARSEMEM configuration is global to all AArch64 platforms and
  allows for 1GB sections with SPARSEMEM_VMEMMAP enabled by default.

  Signed-off-by: Will Deacon
  Signed-off-by: Catalin Marinas
  Acked-by: Tony Lindgren
  Acked-by: Nicolas Pitre
  Acked-by: Olof Johansson
  Acked-by: Santosh Shilimkar
  Acked-by: Arnd Bergmann

  Catalin Marinas

  2012-09-17 20:41:56 +0800  
• 9703d9d7f   arm64: Kernel booting and initialisation ... Browse Code »

  The patch adds the kernel booting and the initial setup code.
  Documentation/arm64/booting.txt describes the booting protocol on the
  AArch64 Linux kernel. This is subject to change following the work on
  boot standardisation, ACPI.

  Signed-off-by: Will Deacon
  Signed-off-by: Catalin Marinas
  Acked-by: Nicolas Pitre
  Acked-by: Tony Lindgren
  Acked-by: Olof Johansson
  Acked-by: Santosh Shilimkar
  Acked-by: Arnd Bergmann

  Catalin Marinas

  2012-09-17 17:24:45 +0800