diff options
Diffstat (limited to 'configs/platform-v7a/patches/barebox-2017.06.0/0005-common-oftree-add-fixup-handler-for-virtio-mmio-devi.patch')
-rw-r--r-- | configs/platform-v7a/patches/barebox-2017.06.0/0005-common-oftree-add-fixup-handler-for-virtio-mmio-devi.patch | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/configs/platform-v7a/patches/barebox-2017.06.0/0005-common-oftree-add-fixup-handler-for-virtio-mmio-devi.patch b/configs/platform-v7a/patches/barebox-2017.06.0/0005-common-oftree-add-fixup-handler-for-virtio-mmio-devi.patch new file mode 100644 index 0000000..8b64d2f --- /dev/null +++ b/configs/platform-v7a/patches/barebox-2017.06.0/0005-common-oftree-add-fixup-handler-for-virtio-mmio-devi.patch @@ -0,0 +1,62 @@ +From: Michael Olbrich <m.olbrich@pengutronix.de> +Date: Tue, 13 Sep 2016 21:20:10 +0200 +Subject: [PATCH] common: oftree: add fixup handler for 'virtio,mmio' devices + +Qemu adds 'virtio,mmio' nodes to the device tree. Before passing it to the +bootloader or the Linux kernel. This fixup handler copies these nodes to +the new device tree. + +v2: +- move from general to platform specific init + +Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de> +Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de> +--- + arch/arm/boards/vexpress/init.c | 30 ++++++++++++++++++++++++++++++ + 1 file changed, 30 insertions(+) + +diff --git a/arch/arm/boards/vexpress/init.c b/arch/arm/boards/vexpress/init.c +index 68ebbfab2633..8655b7e17c97 100644 +--- a/arch/arm/boards/vexpress/init.c ++++ b/arch/arm/boards/vexpress/init.c +@@ -18,6 +18,7 @@ + #include <globalvar.h> + #include <linux/amba/sp804.h> + #include <mci.h> ++#include <of.h> + + struct vexpress_init { + void (*core_init)(void); +@@ -156,3 +157,32 @@ static int vexpress_core_init(void) + return 0; + } + postcore_initcall(vexpress_core_init); ++ ++static int of_fixup_virtio_mmio(struct device_node *root, void *unused) ++{ ++ struct device_node *barebox_root, *np, *parent; ++ ++ barebox_root = of_get_root_node(); ++ if (root == barebox_root) ++ return 0; ++ ++ for_each_compatible_node_from(np, barebox_root, NULL, "virtio,mmio") { ++ if (of_get_parent(np) == barebox_root) ++ parent = root; ++ else ++ parent = of_find_node_by_path_from(root, ++ of_get_parent(np)->full_name); ++ if (!parent) ++ return -EINVAL; ++ ++ of_copy_node(parent, np); ++ } ++ ++ return 0; ++} ++ ++static int of_register_virtio_mmio_fixup(void) ++{ ++ return of_register_fixup(of_fixup_virtio_mmio, NULL); ++} ++late_initcall(of_register_virtio_mmio_fixup); |