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  1. 23 May, 2011 2 commits
    • Grant Likely's avatar
      arm/dt: probe for platforms via the device tree · 93c02ab4
      Grant Likely authored 
      If a dtb is passed to the kernel then the kernel needs to iterate
through compiled-in mdescs looking for one that matches and move the
dtb data to a safe location before it gets accidentally overwritten by
the kernel.

This patch creates a new function, setup_machine_fdt() which is
analogous to the setup_machine_atags() created in the previous patch.
It does all the early setup needed to use a device tree machine
description.

v5: - Print warning with neither dtb nor atags are passed to the kernel
    - Fix bug in setting of __machine_arch_type to the selected machine,
      not just the last machine in the list.
Reported-by: default avatarTixy <tixy@yxit.co.uk>
    - Copy command line directly into boot_command_line instead of cmd_line
v4: - Dump some output when a matching machine_desc cannot be found
v3: - Added processing of reserved list.
    - Backed out the v2 change that copied instead of reserved the
      dtb.  dtb is reserved again and the real problem was fixed by
      using alloc_bootmem_align() for early allocation of RAM for
      unflattening the tree.
    - Moved cmd_line and initrd changes to earlier patch to make series
      bisectable.
v2: Changed to save the dtb by copying into an allocated buffer.
    - Since the dtb will very likely be passed in the first 16k of ram
      where the interrupt vectors live, memblock_reserve() is
      insufficient to protect the dtb data.

[based on work originally written by Jeremy Kerr <jeremy.kerr@canonical.com>]
Tested-by: default avatarTony Lindgren <tony@atomide.com>
Acked-by: default avatarNicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
      93c02ab4
    • Grant Likely's avatar
      arm/dt: consolidate atags setup into setup_machine_atags · 6291319d
      Grant Likely authored 
      In preparation for adding device tree support, this patch consolidates
all of the atag-specific setup into a single function.

v5: - drop double printk("Machine; %s\n", ...); call.
    - leave copying boot_command_line in setup_arch() since it isn't
      atags specific.
v4: - adapt to the removal of lookup_machine_type()
    - break out dump of machine_desc table into dump_machine_table()
      because the device tree probe code will use it.
    - Add for_each_machine_desc() macro
Tested-by: default avatarTony Lindgren <tony@atomide.com>
Acked-by: default avatarNicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
      6291319d
  3. 11 May, 2011 4 commits
  5. 10 May, 2011 2 commits
  7. 09 May, 2011 27 commits
  9. 08 May, 2011 5 commits
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