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arm/dt: Allow CONFIG_OF on ARM

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Add some basic empty infrastructure for DT support on ARM.

v5: - Fix off-by-one error in size calculation of initrd
    - Stop mucking with cmd_line, and load command line from dt into
      boot_command_line instead which matches the behaviour of ATAGS booting
v3: - moved cmd_line export and initrd setup to this patch to make the
      series bisectable.
    - switched to alloc_bootmem_align() for allocation when
      unflattening the device tree.  memblock_alloc() was not the
      right interface.

Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Grant Likely
2011-04-28 14:27:20 -06:00
parent 4c2896e88d
commit 9eb8f6743b
7 changed files with 92 additions and 1 deletions
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7
arch/arm/Kconfig
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@@ -1687,6 +1687,13 @@ endmenu
menu "Boot options"
config USE_OF
bool "Flattened Device Tree support"
select OF
select OF_EARLY_FLATTREE
help
Include support for flattened device tree machine descriptions.
# Compressed boot loader in ROM. Yes, we really want to ask about
# TEXT and BSS so we preserve their values in the config files.
config ZBOOT_ROM_TEXT