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author | aurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-12-16 10:43:48 +0000 |
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committer | aurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-12-16 10:43:48 +0000 |
commit | f652e6af11c670da4bbd738a1bca8b4b31ed97b4 (patch) | |
tree | 8bb833e6e9198e80f8ba8507e4ec442d0e2823ec /device_tree.h | |
parent | b7da58fd27bfbe7c14bc8a0332135663f17caecc (diff) | |
download | hqemu-f652e6af11c670da4bbd738a1bca8b4b31ed97b4.zip hqemu-f652e6af11c670da4bbd738a1bca8b4b31ed97b4.tar.gz |
Implement device tree support needed for Bamboo emulation
To implement the -kernel, -initrd, and -append options, 4xx board emulation
must load the guest kernel as if firmware had loaded it. Where u-boot would be
the firmware, we must load the flat device tree into memory and set key fields
such as /chosen/bootargs.
This patch introduces a dependency on libfdt for flat device tree support.
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6064 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'device_tree.h')
-rw-r--r-- | device_tree.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/device_tree.h b/device_tree.h new file mode 100644 index 0000000..9e6ef3d --- /dev/null +++ b/device_tree.h @@ -0,0 +1,26 @@ +/* + * Header with function prototypes to help device tree manipulation using + * libfdt. It also provides functions to read entries from device tree proc + * interface. + * + * Copyright 2008 IBM Corporation. + * Authors: Jerone Young <jyoung5@us.ibm.com> + * Hollis Blanchard <hollisb@us.ibm.com> + * + * This work is licensed under the GNU GPL license version 2 or later. + * + */ + +#ifndef __DEVICE_TREE_H__ +#define __DEVICE_TREE_H__ + +void *load_device_tree(const char *filename_path, void *load_addr); + +int qemu_devtree_setprop(void *fdt, const char *node_path, + const char *property, uint32_t *val_array, int size); +int qemu_devtree_setprop_cell(void *fdt, const char *node_path, + const char *property, uint32_t val); +int qemu_devtree_setprop_string(void *fdt, const char *node_path, + const char *property, const char *string); + +#endif /* __DEVICE_TREE_H__ */ |