diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2005-08-09 10:36:34 +0200 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2005-08-29 10:53:31 +1000 |
| commit | 34153fa3af45d84f3221d9b67ba2ab7e8a220d28 (patch) | |
| tree | 74f69cd35bef255583acaac181324558a286e40c /include | |
| parent | e28f7faf05159f1cfd564596f5e6178edba6bd49 (diff) | |
[PATCH] flattened device tree changes
This patch updates the format of the flattened device-tree passed
between the boot trampoline and the kernel to support a more compact
representation, for use by embedded systems mostly.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-ppc64/prom.h | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/include/asm-ppc64/prom.h b/include/asm-ppc64/prom.h index 04b1a84f7ca..dc5330b3950 100644 --- a/include/asm-ppc64/prom.h +++ b/include/asm-ppc64/prom.h @@ -22,13 +22,15 @@ #define RELOC(x) (*PTRRELOC(&(x))) /* Definitions used by the flattened device tree */ -#define OF_DT_HEADER 0xd00dfeed /* 4: version, 4: total size */ -#define OF_DT_BEGIN_NODE 0x1 /* Start node: full name */ +#define OF_DT_HEADER 0xd00dfeed /* marker */ +#define OF_DT_BEGIN_NODE 0x1 /* Start of node, full name */ #define OF_DT_END_NODE 0x2 /* End node */ -#define OF_DT_PROP 0x3 /* Property: name off, size, content */ +#define OF_DT_PROP 0x3 /* Property: name off, size, + * content */ +#define OF_DT_NOP 0x4 /* nop */ #define OF_DT_END 0x9 -#define OF_DT_VERSION 1 +#define OF_DT_VERSION 0x10 /* * This is what gets passed to the kernel by prom_init or kexec @@ -54,7 +56,9 @@ struct boot_param_header u32 version; /* format version */ u32 last_comp_version; /* last compatible version */ /* version 2 fields below */ - u32 boot_cpuid_phys; /* Which physical CPU id we're booting on */ + u32 boot_cpuid_phys; /* Physical CPU id we're booting on */ + /* version 3 fields below */ + u32 dt_strings_size; /* size of the DT strings block */ }; |