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Message-Id: <1299267744-17278-3-git-send-email-ddaney@caviumnetworks.com>
Date: Fri, 4 Mar 2011 11:42:14 -0800
From: David Daney <ddaney@...iumnetworks.com>
To: linux-mips@...ux-mips.org, ralf@...ux-mips.org,
devicetree-discuss@...ts.ozlabs.org, grant.likely@...retlab.ca,
linux-kernel@...r.kernel.org
Cc: David Daney <ddaney@...iumnetworks.com>
Subject: [RFC PATCH v2 02/12] of: Allow scripts/dtc/libfdt to be used from kernel code
Signed-off-by: David Daney <ddaney@...iumnetworks.com>
---
include/linux/libfdt.h | 3 +++
lib/Kconfig | 6 ++++++
lib/Makefile | 2 ++
lib/libfdt/Makefile | 7 +++++++
lib/libfdt/libfdt_env.h | 21 +++++++++++++++++++++
scripts/dtc/libfdt/libfdt.h | 4 ++--
6 files changed, 41 insertions(+), 2 deletions(-)
create mode 100644 include/linux/libfdt.h
create mode 100644 lib/libfdt/Makefile
create mode 100644 lib/libfdt/libfdt_env.h
diff --git a/include/linux/libfdt.h b/include/linux/libfdt.h
new file mode 100644
index 0000000..10bce91
--- /dev/null
+++ b/include/linux/libfdt.h
@@ -0,0 +1,3 @@
+#include "../../lib/libfdt/libfdt_env.h"
+#include "../../scripts/dtc/libfdt/fdt.h"
+#include "../../scripts/dtc/libfdt/libfdt.h"
diff --git a/lib/Kconfig b/lib/Kconfig
index 0ee67e0..e8a2638 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -219,4 +219,10 @@ config LRU_CACHE
config AVERAGE
bool
+#
+# The Flattened Device Tree manipulation library
+#
+config LIBFDT
+ bool
+
endmenu
diff --git a/lib/Makefile b/lib/Makefile
index cbb774f..5840115 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -110,6 +110,8 @@ obj-$(CONFIG_ATOMIC64_SELFTEST) += atomic64_test.o
obj-$(CONFIG_AVERAGE) += average.o
+obj-$(CONFIG_LIBFDT) += libfdt/
+
hostprogs-y := gen_crc32table
clean-files := crc32table.h
diff --git a/lib/libfdt/Makefile b/lib/libfdt/Makefile
new file mode 100644
index 0000000..6c1a496
--- /dev/null
+++ b/lib/libfdt/Makefile
@@ -0,0 +1,7 @@
+obj-y = fdt.o fdt_wip.o fdt_ro.o
+
+EXTRA_CFLAGS += -include $(src)/libfdt_env.h -I$(src)/../../scripts/dtc/libfdt
+
+$(obj)/%.o: $(src)/../../scripts/dtc/libfdt/%.c FORCE
+ $(call cmd,force_checksrc)
+ $(call if_changed_rule,cc_o_c)
diff --git a/lib/libfdt/libfdt_env.h b/lib/libfdt/libfdt_env.h
new file mode 100644
index 0000000..d977b8b
--- /dev/null
+++ b/lib/libfdt/libfdt_env.h
@@ -0,0 +1,21 @@
+#ifndef _LIBFDT_ENV_H
+#define _LIBFDT_ENV_H
+
+#include <linux/string.h>
+
+#define _B(n) ((unsigned long long)((uint8_t *)&x)[n])
+static inline uint32_t fdt32_to_cpu(uint32_t x)
+{
+ return (_B(0) << 24) | (_B(1) << 16) | (_B(2) << 8) | _B(3);
+}
+#define cpu_to_fdt32(x) fdt32_to_cpu(x)
+
+static inline uint64_t fdt64_to_cpu(uint64_t x)
+{
+ return (_B(0) << 56) | (_B(1) << 48) | (_B(2) << 40) | (_B(3) << 32)
+ | (_B(4) << 24) | (_B(5) << 16) | (_B(6) << 8) | _B(7);
+}
+#define cpu_to_fdt64(x) fdt64_to_cpu(x)
+#undef _B
+
+#endif /* _LIBFDT_ENV_H */
diff --git a/scripts/dtc/libfdt/libfdt.h b/scripts/dtc/libfdt/libfdt.h
index ce80e4f..33a0c4d 100644
--- a/scripts/dtc/libfdt/libfdt.h
+++ b/scripts/dtc/libfdt/libfdt.h
@@ -51,8 +51,8 @@
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-#include <libfdt_env.h>
-#include <fdt.h>
+#include "libfdt_env.h"
+#include "fdt.h"
#define FDT_FIRST_SUPPORTED_VERSION 0x10
#define FDT_LAST_SUPPORTED_VERSION 0x11
--
1.7.2.3
--
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