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| author | Rob Herring <robh@kernel.org> | 2014-04-01 22:55:14 -0500 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2014-04-30 00:59:20 -0500 |
| commit | c3fc952d2fbe3ec78defd70cf73d5d76d27092ec (patch) | |
| tree | efcb35807164e6e71e626c70948cb68091498373 /arch/powerpc | |
| parent | 1daa0c4ced334f18f458aba6ace7e01e8cdc2ecf (diff) | |
| download | op-kernel-dev-c3fc952d2fbe3ec78defd70cf73d5d76d27092ec.zip op-kernel-dev-c3fc952d2fbe3ec78defd70cf73d5d76d27092ec.tar.gz | |
of: push struct boot_param_header and defines into powerpc
Now powerpc is the only user of struct boot_param_header and FDT defines,
so they can be moved into the powerpc architecture code.
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@lists.ozlabs.org
Tested-by: Grant Likely <grant.likely@linaro.org>
Tested-by: Stephen Chivers <schivers@csc.com>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/include/asm/prom.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h index d977b9b..74b79f0 100644 --- a/arch/powerpc/include/asm/prom.h +++ b/arch/powerpc/include/asm/prom.h @@ -26,6 +26,45 @@ #include <linux/of_irq.h> #include <linux/platform_device.h> +#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_NOP 0x4 /* nop */ +#define OF_DT_END 0x9 + +#define OF_DT_VERSION 0x10 + +/* + * This is what gets passed to the kernel by prom_init or kexec + * + * The dt struct contains the device tree structure, full pathes and + * property contents. The dt strings contain a separate block with just + * the strings for the property names, and is fully page aligned and + * self contained in a page, so that it can be kept around by the kernel, + * each property name appears only once in this page (cheap compression) + * + * the mem_rsvmap contains a map of reserved ranges of physical memory, + * passing it here instead of in the device-tree itself greatly simplifies + * the job of everybody. It's just a list of u64 pairs (base/size) that + * ends when size is 0 + */ +struct boot_param_header { + __be32 magic; /* magic word OF_DT_HEADER */ + __be32 totalsize; /* total size of DT block */ + __be32 off_dt_struct; /* offset to structure */ + __be32 off_dt_strings; /* offset to strings */ + __be32 off_mem_rsvmap; /* offset to memory reserve map */ + __be32 version; /* format version */ + __be32 last_comp_version; /* last compatible version */ + /* version 2 fields below */ + __be32 boot_cpuid_phys; /* Physical CPU id we're booting on */ + /* version 3 fields below */ + __be32 dt_strings_size; /* size of the DT strings block */ + /* version 17 fields below */ + __be32 dt_struct_size; /* size of the DT structure block */ +}; + /* * OF address retreival & translation */ |
