diff options
| -rw-r--r-- | device_tree.c | 37 | ||||
| -rw-r--r-- | device_tree.h | 1 |
2 files changed, 38 insertions, 0 deletions
diff --git a/device_tree.c b/device_tree.c index 2f127b71b0..d0378961f0 100644 --- a/device_tree.c +++ b/device_tree.c @@ -25,6 +25,43 @@ #include <libfdt.h> +#define FDT_MAX_SIZE 0x10000 + +void *create_device_tree(int *sizep) +{ + void *fdt; + int ret; + + *sizep = FDT_MAX_SIZE; + fdt = g_malloc0(FDT_MAX_SIZE); + ret = fdt_create(fdt, FDT_MAX_SIZE); + if (ret < 0) { + goto fail; + } + ret = fdt_begin_node(fdt, ""); + if (ret < 0) { + goto fail; + } + ret = fdt_end_node(fdt); + if (ret < 0) { + goto fail; + } + ret = fdt_finish(fdt); + if (ret < 0) { + goto fail; + } + ret = fdt_open_into(fdt, fdt, *sizep); + if (ret) { + fprintf(stderr, "Unable to copy device tree in memory\n"); + exit(1); + } + + return fdt; +fail: + fprintf(stderr, "%s Couldn't create dt: %s\n", __func__, fdt_strerror(ret)); + exit(1); +} + void *load_device_tree(const char *filename_path, int *sizep) { int dt_size; diff --git a/device_tree.h b/device_tree.h index 36fc9dbede..5f76f40eeb 100644 --- a/device_tree.h +++ b/device_tree.h @@ -14,6 +14,7 @@ #ifndef __DEVICE_TREE_H__ #define __DEVICE_TREE_H__ +void *create_device_tree(int *sizep); void *load_device_tree(const char *filename_path, int *sizep); int qemu_devtree_setprop(void *fdt, const char *node_path, |