diff options
| author | Grant Likely <grant.likely@secretlab.ca> | 2009-10-15 10:57:55 -0600 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2009-10-15 10:57:55 -0600 |
| commit | d45d94f672e3c79b0db1e6d76e1638ee521d56c0 (patch) | |
| tree | cc95f1b20773c60671a3c4e808e19f8e0a08c542 /include | |
| parent | d8678b58708d7e6bf947ebd03eaf44baf2adfad8 (diff) | |
of: merge struct boot_param_header from Microblaze and PowerPC
Merge common code for working with Flattened Device Tree data structure
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/of_fdt.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h index 8b5ecc1cb6aa..b37ad3a973b9 100644 --- a/include/linux/of_fdt.h +++ b/include/linux/of_fdt.h @@ -23,4 +23,36 @@ #define OF_DT_VERSION 0x10 +#ifndef __ASSEMBLY__ +/* + * 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 { + u32 magic; /* magic word OF_DT_HEADER */ + u32 totalsize; /* total size of DT block */ + u32 off_dt_struct; /* offset to structure */ + u32 off_dt_strings; /* offset to strings */ + u32 off_mem_rsvmap; /* offset to memory reserve map */ + u32 version; /* format version */ + u32 last_comp_version; /* last compatible version */ + /* version 2 fields below */ + 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 */ + /* version 17 fields below */ + u32 dt_struct_size; /* size of the DT structure block */ +}; + +#endif /* __ASSEMBLY__ */ #endif /* _LINUX_OF_FDT_H */ |