From f652e6af11c670da4bbd738a1bca8b4b31ed97b4 Mon Sep 17 00:00:00 2001 From: aurel32 Date: Tue, 16 Dec 2008 10:43:48 +0000 Subject: 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 Signed-off-by: Aurelien Jarno git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6064 c046a42c-6fe2-441c-8c8c-71466251a162 --- device_tree.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 device_tree.h (limited to 'device_tree.h') diff --git a/device_tree.h b/device_tree.h new file mode 100644 index 0000000000..9e6ef3d8e3 --- /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 + * Hollis Blanchard + * + * 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__ */ -- cgit v1.2.3