Add a reserved_mem_read initcall which parses the reserved-memory
entries and adds barebox of reserve entries. Also remove the OP-TEE size
of reserve entry, since this is now parsed from the DT and does not need
to be statically configured any longer.
Signed-off-by: Rouven Czerwinski <r.czerwinski@xxxxxxxxxxxxxx>
---
drivers/of/Makefile | 1 +
drivers/of/reserved-mem.c | 43 +++++++++++++++++++++++++++++++++++++++
2 files changed, 44 insertions(+)
create mode 100644 drivers/of/reserved-mem.c
diff --git a/drivers/of/Makefile b/drivers/of/Makefile
index b6847752d2..b69cb84b99 100644
--- a/drivers/of/Makefile
+++ b/drivers/of/Makefile
@@ -4,6 +4,7 @@ obj-$(CONFIG_OF_GPIO) += of_gpio.o
obj-$(CONFIG_OF_PCI) += of_pci.o
obj-y += partition.o
obj-y += of_net.o
+obj-$(CONFIG_OFDEVICE) += reserved-mem.o
obj-$(CONFIG_MTD) += of_mtd.o
obj-$(CONFIG_OF_BAREBOX_DRIVERS) += barebox.o
obj-$(CONFIG_OF_OVERLAY) += overlay.o resolver.o of_firmware.o
diff --git a/drivers/of/reserved-mem.c b/drivers/of/reserved-mem.c
new file mode 100644
index 0000000000..8519a7e3dd
--- /dev/null
+++ b/drivers/of/reserved-mem.c
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// SPDX-FileCopyrightText: 2021 Rouven Czerwinski <r.czerwinski@xxxxxxxxxxxxxx>, Pengutronix
+
+#define pr_fmt(fmt) "reserved-memory: " fmt
+
+#define DEBUG
+
+#include <common.h>
+#include <init.h>
+#include <of.h>
+#include <of_address.h>
+#include <malloc.h>
+#include <partition.h>
+
+static int reserved_mem_read(void)
+{
+ struct device_node *node, *child;
+ struct resource resource;
+ int flag;
+
+ node = of_find_node_by_path("/reserved-memory");
+ if (!node)
+ return 0;
+
+ for_each_child_of_node(node, child) {
+ flag = OF_RESERVE_ENTRY_FLAG_NO_RESERVE;
+
+ of_address_to_resource(child, 0, &resource);
+
+ pr_err("Res-Mem start: 0x%08x\n", resource.start);
+ pr_err("Res-Mem end: 0x%08x\n", resource.end);
+
+ if (of_find_property(child, "no-map", 0)) {
+ pr_debug("child %p: no-map\n", child);
+ flag |= OF_RESERVE_ENTRY_FLAG_XN;
+ }
+
+ of_add_reserve_entry(resource.start, resource.end, flag);
+ }
+
+ return 0;
+}
+postconsole_initcall(reserved_mem_read);
--
2.32.0
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