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device_tree: Add qemu_fdt_add_path

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qemu_fdt_add_path() works like qemu_fdt_add_subnode(), except it
also adds all missing subnodes from the given path. We'll use it
in a coming patch where we will add cpu-map to the device tree.

And we also tweak an error message of qemu_fdt_add_subnode().

Co-developed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Yanan Wang <wangyanan55@huawei.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20211020142125.7516-3-wangyanan55@huawei.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Yanan Wang 2021-10-20 22:21:19 +08:00 • committed by Richard Henderson
parent 31511b6fe0
commit b863f0b758
2 changed files with 43 additions and 2 deletions
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1
include/sysemu/device_tree.h
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@ -121,6 +121,7 @@ uint32_t qemu_fdt_get_phandle(void *fdt, const char *path);
uint32_t qemu_fdt_alloc_phandle(void *fdt);
int qemu_fdt_nop_node(void *fdt, const char *node_path);
int qemu_fdt_add_subnode(void *fdt, const char *name);
int qemu_fdt_add_path(void *fdt, const char *path);
#define qemu_fdt_setprop_cells(fdt, node_path, property, ...) \
do { \