From 694580fa60f1e8c16b144fc677e1cb41c153f62e Mon Sep 17 00:00:00 2001
From: Paul Walmsley <paul.walmsley@sifive.com>
Date: Mon, 10 Sep 2018 13:28:56 -0700
Subject: config: arch: riscv: add initial 64-bit support

Add initial rv64 support.  Originally based on suggestions from
Franz Flasch <franz.flasch@gmx.at>.

Cc: Franz Flasch <franz.flasch@gmx.at>
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>

diff --git a/config/arch/riscv.in b/config/arch/riscv.in
index 4efde97..109556a 100644
--- a/config/arch/riscv.in
+++ b/config/arch/riscv.in
@@ -4,9 +4,12 @@
 ## depends on EXPERIMENTAL
 ##
 ## select ARCH_SUPPORTS_32
+## select ARCH_SUPPORTS_64
 ## select ARCH_DEFAULT_32
+## select ARCH_SUPPORTS_BOTH_MMU
 ## select ARCH_SUPPORTS_WITH_ABI
 ## select ARCH_SUPPORTS_WITH_ARCH
+## select ARCH_SUPPORTS_WITH_TUNE
 ## select GCC_REQUIRE_7_or_later
 
 ## help The RISC-V architecture, as defined by:
-- 
cgit v0.10.2-6-g49f6


From 05d74f9d63aaeaa8afebf77f3dce64aa2a7fdde6 Mon Sep 17 00:00:00 2001
From: Paul Walmsley <paul.walmsley@sifive.com>
Date: Mon, 10 Sep 2018 18:04:03 -0700
Subject: riscv64: add rv64gc linux-gnu sample

This sample works well for the SiFive U540 device (and similar).

Thanks to Jim Wilson <jimw@sifive.com> for his review, discovering
several bugs (now fixed).

Cc: Jim Wilson <jimw@sifive.com>
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>

diff --git a/samples/riscv64-unknown-linux-gnu/crosstool.config b/samples/riscv64-unknown-linux-gnu/crosstool.config
new file mode 100644
index 0000000..66c288d
--- /dev/null
+++ b/samples/riscv64-unknown-linux-gnu/crosstool.config
@@ -0,0 +1,12 @@
+CT_EXPERIMENTAL=y
+CT_ARCH_RISCV=y
+# CT_DEMULTILIB is not set
+CT_ARCH_USE_MMU=y
+CT_ARCH_64=y
+CT_KERNEL_LINUX=y
+CT_DEBUG_GDB=y
+# CT_GDB_CROSS_PYTHON is not set
+# CT_GDB_GDBSERVER is not set
+CT_ZLIB_NEEDED=y
+CT_TARGET_VENDOR="unknown"
+CT_ARCH_ARCH="rv64gc"
diff --git a/samples/riscv64-unknown-linux-gnu/reported.by b/samples/riscv64-unknown-linux-gnu/reported.by
new file mode 100644
index 0000000..9456e59
--- /dev/null
+++ b/samples/riscv64-unknown-linux-gnu/reported.by
@@ -0,0 +1,3 @@
+reporter_name="Paul Walmsley <paul.walmsley@sifive.com>"
+reporter_url="https://www.sifive.com/"
+reporter_comment=""
-- 
cgit v0.10.2-6-g49f6