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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2011-02-22 21:07:37 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-02-23 22:27:52 +0100 |
| commit | da6b737b9ab768dd06bb4b0395131d10e524cf83 (patch) | |
| tree | 5ae44f22f3be802f2a9d3c09fd068f394efbd0a6 /arch/x86/include/asm/bootparam.h | |
| parent | x86: e820: Remove conditional early mapping in parse_e820_ext (diff) | |
| download | linux-da6b737b9ab768dd06bb4b0395131d10e524cf83.tar.xz linux-da6b737b9ab768dd06bb4b0395131d10e524cf83.zip | |
x86: Add device tree support
This patch adds minimal support for device tree on x86. The device
tree blob is passed to the kernel via setup_data which requires at
least boot protocol 2.09.
Memory size, restricted memory regions, boot arguments are gathered
the traditional way so things like cmd_line are just here to let the
code compile.
The current plan is use the device tree as an extension and to gather
information which can not be enumerated and would have to be hardcoded
otherwise. This includes things like
- which devices are on this I2C/SPI bus?
- how are the interrupts wired to IO APIC?
- where could my hpet be?
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: sodaville@linutronix.de
Cc: devicetree-discuss@lists.ozlabs.org
LKML-Reference: <1298405266-1624-3-git-send-email-bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/include/asm/bootparam.h')
| -rw-r--r-- | arch/x86/include/asm/bootparam.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/bootparam.h b/arch/x86/include/asm/bootparam.h index c8bfe63a06de..e020d88ec02d 100644 --- a/arch/x86/include/asm/bootparam.h +++ b/arch/x86/include/asm/bootparam.h @@ -12,6 +12,7 @@ /* setup data types */ #define SETUP_NONE 0 #define SETUP_E820_EXT 1 +#define SETUP_DTB 2 /* extensible setup data list node */ struct setup_data { |