From ee92c0fe5c1b9d59508273916e2c9a75b68dbc13 Mon Sep 17 00:00:00 2001
From: Waldemar Brodkorb <wbx@openadk.org>
Date: Thu, 21 Apr 2016 01:25:29 +0200
Subject: nds32: add support for new architecture

Add support for Andes Technology NDS32 architecture.
See here http://www.andestech.com/en/index/index.htm for more
informaton. Verification of the port from an older uClibc
port was done on a sponsored AG101p board.

The testsuite only has 5 errors, three are related to
an existing bug in dlclose() with LT.old, also happening
on cris32 and m68k.

Failures to fallocate/posix_fallocate are unresolved.

Thanks to Andes Technology sponsoring the hardware and
being very helpful while doing the uClibc-ng porting.

Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
---
 extra/Configs/Config.in    | 12 ++++++++++--
 extra/Configs/Config.nds32 | 31 +++++++++++++++++++++++++++++++
 2 files changed, 41 insertions(+), 2 deletions(-)
 create mode 100644 extra/Configs/Config.nds32

(limited to 'extra')

diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in
index 4a1509d88..1d97e784e 100644
--- a/extra/Configs/Config.in
+++ b/extra/Configs/Config.in
@@ -31,6 +31,7 @@ choice
 	default TARGET_metag if DESIRED_TARGET_ARCH = "metag"
 	default TARGET_microblaze if DESIRED_TARGET_ARCH = "microblaze"
 	default TARGET_mips if DESIRED_TARGET_ARCH = "mips"
+	default TARGET_nds32 if DESIRED_TARGET_ARCH = "nds32"
 	default TARGET_nios2 if DESIRED_TARGET_ARCH = "nios2"
 	default TARGET_or1k if DESIRED_TARGET_ARCH = "or1k"
 	default TARGET_powerpc if DESIRED_TARGET_ARCH = "powerpc"
@@ -94,6 +95,9 @@ config TARGET_microblaze
 config TARGET_mips
 	bool "mips"
 
+config TARGET_nds32
+	bool "nds32"
+
 config TARGET_nios2
 	bool "nios2"
 
@@ -172,6 +176,10 @@ if TARGET_metag
 source "extra/Configs/Config.metag"
 endif
 
+if TARGET_nds32
+source "extra/Configs/Config.nds32"
+endif
+
 if TARGET_nios2
 source "extra/Configs/Config.nios2"
 endif
@@ -476,7 +484,6 @@ config LDSO_GNU_HASH_SUPPORT
 
 choice
 	prompt "Thread support"
-	#default UCLIBC_HAS_THREADS_NATIVE if (TARGET_alpha || TARGET_arm || TARGET_i386 || TARGET_mips || TARGET_powerpc || TARGET_sh || TARGET_sh64)
 	default HAS_NO_THREADS
 	help
 	  If you want to compile uClibc with pthread support, then answer Y.
@@ -524,6 +531,7 @@ config UCLIBC_HAS_THREADS_NATIVE
 		   !TARGET_ia64 && \
 		   !TARGET_m68k && \
 		   !TARGET_microblaze && \
+		   !TARGET_nds32 && \
 		   !TARGET_nios2 && \
 		   !TARGET_or1k && \
 		   ARCH_USE_MMU
@@ -2094,7 +2102,7 @@ menu "Security options"
 config UCLIBC_BUILD_PIE
 	bool "Build utilities as ET_DYN/PIE executables"
 	depends on HAVE_SHARED
-	depends on TARGET_arm || TARGET_frv || TARGET_i386 || TARGET_mips || TARGET_powerpc
+	depends on TARGET_arm || TARGET_frv || TARGET_i386 || TARGET_mips || TARGET_powerpc || TARGET_nds32
 	select FORCE_SHAREABLE_TEXT_SEGMENTS
 	help
 	  If you answer Y here, ldd and iconv are built as ET_DYN/PIE
diff --git a/extra/Configs/Config.nds32 b/extra/Configs/Config.nds32
new file mode 100644
index 000000000..a74249947
--- /dev/null
+++ b/extra/Configs/Config.nds32
@@ -0,0 +1,31 @@
+#
+# For a description of the syntax of this configuration file,
+# see extra/config/Kconfig-language.txt
+#
+
+config TARGET_ARCH
+	string
+	default "nds32"
+
+config FORCE_OPTIONS_FOR_ARCH
+	bool
+	default y
+	select ARCH_ANY_ENDIAN
+	select ARCH_HAS_DEPRECATED_SYSCALLS
+	select ARCH_HAS_MMU
+
+choice
+	prompt "MMU Page Size"
+	default CONFIG_NDS32_PAGE_SIZE_4K
+
+config CONFIG_NDS32_PAGE_SIZE_4K
+	bool "4KB"
+	help
+	  Use 4k pagesize.
+
+config CONFIG_NDS32_PAGE_SIZE_8K
+	bool "8KB"
+	help
+	  Use 8k pagesize.
+
+endchoice
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