From cfd93465ec9d5e47447564cd4cedabc43390c12b Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Thu, 27 Mar 2025 11:30:27 +0000 Subject: [fdt] Add the concept of an FDT image Define the concept of an "FDT" image, representing a Flattened Device Tree blob that has been downloaded in order to be provided to a kernel or other executable image. FDT images are represented using an image tag (as with other special-purpose images such as the UEFI shim), and are similarly marked as hidden so that they will not be included in a generated magic initrd or show up in a virtual filesystem directory listing. Signed-off-by: Michael Brown --- src/include/ipxe/fdt.h | 3 +++ src/include/usr/fdtmgmt.h | 16 ++++++++++++++++ 2 files changed, 19 insertions(+) create mode 100644 src/include/usr/fdtmgmt.h (limited to 'src/include') diff --git a/src/include/ipxe/fdt.h b/src/include/ipxe/fdt.h index 9b9b01b6c..995975ed8 100644 --- a/src/include/ipxe/fdt.h +++ b/src/include/ipxe/fdt.h @@ -10,6 +10,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #include +#include struct net_device; @@ -93,6 +94,8 @@ struct fdt { size_t strings_len; }; +extern struct image_tag fdt_image __image_tag; + extern int fdt_path ( const char *path, unsigned int *offset ); extern int fdt_alias ( const char *name, unsigned int *offset ); extern const char * fdt_string ( unsigned int offset, const char *name ); diff --git a/src/include/usr/fdtmgmt.h b/src/include/usr/fdtmgmt.h new file mode 100644 index 000000000..3d3aef859 --- /dev/null +++ b/src/include/usr/fdtmgmt.h @@ -0,0 +1,16 @@ +#ifndef _USR_FDTMGMT_H +#define _USR_FDTMGMT_H + +/** @file + * + * Flattened Device Tree management + * + */ + +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); + +#include + +extern int imgfdt ( struct image *image ); + +#endif /* _USR_FDTMGMT_H */ -- cgit v1.2.3-55-g7522