From 7cd5da0fe877e7171a4cdd44880bce783132871a Mon Sep 17 00:00:00 2001 From: Gerald Van Baren Date: Sat, 31 Mar 2007 11:59:59 -0400 Subject: libfdt: Import libfdt source (1 of 2) This adds the applicable libfdt source files (unmodified) and a README to explain where the source came from. --- include/libfdt.h | 135 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 135 insertions(+) create mode 100644 include/libfdt.h (limited to 'include/libfdt.h') diff --git a/include/libfdt.h b/include/libfdt.h new file mode 100644 index 000000000..acdc72eac --- /dev/null +++ b/include/libfdt.h @@ -0,0 +1,135 @@ +#ifndef _LIBFDT_H +#define _LIBFDT_H +/* + * libfdt - Flat Device Tree manipulation + * Copyright (C) 2006 David Gibson, IBM Corporation. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public License + * as published by the Free Software Foundation; either version 2.1 of + * the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include +#include + +#define FDT_FIRST_SUPPORTED_VERSION 0x10 +#define FDT_LAST_SUPPORTED_VERSION 0x11 + +/* Error codes: informative error codes */ +#define FDT_ERR_NOTFOUND 1 +#define FDT_ERR_EXISTS 2 +#define FDT_ERR_NOSPACE 3 + +/* Error codes: codes for bad parameters */ +#define FDT_ERR_BADOFFSET 4 +#define FDT_ERR_BADPATH 5 +#define FDT_ERR_BADSTATE 6 + +/* Error codes: codes for bad device tree blobs */ +#define FDT_ERR_TRUNCATED 7 +#define FDT_ERR_BADMAGIC 8 +#define FDT_ERR_BADVERSION 9 +#define FDT_ERR_BADSTRUCTURE 10 +#define FDT_ERR_BADLAYOUT 11 + +#define FDT_ERR_MAX 11 + +#define fdt_get_header(fdt, field) \ + (fdt32_to_cpu(((struct fdt_header *)(fdt))->field)) +#define fdt_magic(fdt) (fdt_get_header(fdt, magic)) +#define fdt_totalsize(fdt) (fdt_get_header(fdt, totalsize)) +#define fdt_off_dt_struct(fdt) (fdt_get_header(fdt, off_dt_struct)) +#define fdt_off_dt_strings(fdt) (fdt_get_header(fdt, off_dt_strings)) +#define fdt_off_mem_rsvmap(fdt) (fdt_get_header(fdt, off_mem_rsvmap)) +#define fdt_version(fdt) (fdt_get_header(fdt, version)) +#define fdt_last_comp_version(fdt) (fdt_get_header(fdt, last_comp_version)) +#define fdt_boot_cpuid_phys(fdt) (fdt_get_header(fdt, boot_cpuid_phys)) +#define fdt_size_dt_strings(fdt) (fdt_get_header(fdt, size_dt_strings)) +#define fdt_size_dt_struct(fdt) (fdt_get_header(fdt, size_dt_struct)) + +#define fdt_set_header(fdt, field, val) \ + ((struct fdt_header *)(fdt))->field = cpu_to_fdt32(val) + +void *fdt_offset_ptr(const void *fdt, int offset, int checklen); + +#define fdt_offset_ptr_typed(fdt, offset, var) \ + ((typeof(var))(fdt_offset_ptr((fdt), (offset), sizeof(*(var))))) + +int fdt_move(const void *fdt, void *buf, int bufsize); + +/* Read-only functions */ +char *fdt_string(const void *fdt, int stroffset); + +int fdt_subnode_offset_namelen(const void *fdt, int parentoffset, + const char *name, int namelen); +int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name); + +int fdt_path_offset(const void *fdt, const char *path); + +struct fdt_property *fdt_get_property(const void *fdt, int nodeoffset, + const char *name, int *lenp); +void *fdt_getprop(const void *fdt, int nodeoffset, + const char *name, int *lenp); + +/* Write-in-place functions */ +int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name, + const void *val, int len); + +#define fdt_setprop_inplace_typed(fdt, nodeoffset, name, val) \ + ({ \ + typeof(val) x = val; \ + fdt_setprop_inplace(fdt, nodeoffset, name, &x, sizeof(x)); \ + }) + +int fdt_nop_property(void *fdt, int nodeoffset, const char *name); +int fdt_nop_node(void *fdt, int nodeoffset); + +/* Sequential-write functions */ +int fdt_create(void *buf, int bufsize); +int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size); +int fdt_finish_reservemap(void *fdt); +int fdt_begin_node(void *fdt, const char *name); +int fdt_property(void *fdt, const char *name, const void *val, int len); +#define fdt_property_typed(fdt, name, val) \ + ({ \ + typeof(val) x = (val); \ + fdt_property((fdt), (name), &x, sizeof(x)); \ + }) +#define fdt_property_string(fdt, name, str) \ + fdt_property(fdt, name, str, strlen(str)+1) +int fdt_end_node(void *fdt); +int fdt_finish(void *fdt); + +/* Read-write functions */ +int fdt_open_into(void *fdt, void *buf, int bufsize); +int fdt_pack(void *fdt); + +int fdt_setprop(void *fdt, int nodeoffset, const char *name, + const void *val, int len); +#define fdt_setprop_typed(fdt, nodeoffset, name, val) \ + ({ \ + typeof(val) x = (val); \ + fdt_setprop((fdt), (nodeoffset), (name), &x, sizeof(x)); \ + }) +#define fdt_setprop_string(fdt, nodeoffset, name, str) \ + fdt_setprop((fdt), (nodeoffset), (name), (str), strlen(str)+1) +int fdt_delprop(void *fdt, int nodeoffset, const char *name); +int fdt_add_subnode_namelen(void *fdt, int parentoffset, + const char *name, int namelen); +int fdt_add_subnode(void *fdt, int parentoffset, const char *name); +int fdt_del_node(void *fdt, int nodeoffset); + +/* Extra functions */ +const char *fdt_strerror(int errval); + +#endif /* _LIBFDT_H */ -- cgit v1.2.3