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From: Lucas Stach <l.stach@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 12/12] ARM: vexpress: add fixup handler for 'virtio, mmio' devices
Date: Fri, 15 Sep 2017 10:39:22 +0200	[thread overview]
Message-ID: <20170915083922.25134-13-l.stach@pengutronix.de> (raw)
In-Reply-To: <20170915083922.25134-1-l.stach@pengutronix.de>

From: Michael Olbrich <m.olbrich@pengutronix.de>

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>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---
 arch/arm/boards/vexpress/init.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/arch/arm/boards/vexpress/init.c b/arch/arm/boards/vexpress/init.c
index 1bbc8c347638..946385393f44 100644
--- a/arch/arm/boards/vexpress/init.c
+++ b/arch/arm/boards/vexpress/init.c
@@ -45,3 +45,32 @@ 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);
-- 
2.11.0


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      parent reply	other threads:[~2017-09-15  8:39 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-09-15  8:39 [PATCH 00/12] Vexpress rework Lucas Stach
2017-09-15  8:39 ` [PATCH 01/12] ARM: vexpress: always build relocatable image Lucas Stach
2017-09-15  8:39 ` [PATCH 02/12] of: populate clock providers before other devices Lucas Stach
2017-09-15  8:39 ` [PATCH 03/12] clk: versatile: add basic clocks Lucas Stach
2017-09-16 13:34   ` Sam Ravnborg
2017-09-15  8:39 ` [PATCH 04/12] clocksource: sp804: silently ignore secondary instaces Lucas Stach
2017-09-15  8:39 ` [PATCH 05/12] mci: mmci: add DT support Lucas Stach
2017-09-16 13:37   ` Sam Ravnborg
2017-09-15  8:39 ` [PATCH 06/12] ARM: vexpress: switch to DT probe and multi-image build Lucas Stach
2017-09-15  8:39 ` [PATCH 07/12] ARM: vexpress: regenerate config Lucas Stach
2017-09-15  8:39 ` [PATCH 08/12] docs: add qemu vexpress Lucas Stach
2017-09-15  8:39 ` [PATCH 09/12] vexpress: use device tree provided by QEMU if available Lucas Stach
2017-09-15  8:39 ` [PATCH 10/12] vexpress: add bootstate node to the device tree Lucas Stach
2017-09-15  8:39 ` [PATCH 11/12] of: base: add funtion to copy a device tree node Lucas Stach
2017-09-20  6:20   ` Sascha Hauer
2017-09-15  8:39 ` Lucas Stach [this message]

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