From 6529c33a67b180d961e16abb5d8fd337930da946 Mon Sep 17 00:00:00 2001
From: Paul Burton <paul.burton@imgtec.com>
Date: Tue, 27 May 2014 15:18:42 +0100
Subject: build: mipsel cross compiler support

This patch introduces support for building a MIPS cross compiler
targetting little endian machines by default.

Original-Change-Id: I116f6f431cdf80f5f5f58d2743357a9f70a7347d
Original-Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/207970
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>
(cherry picked from commit d6c9603c41b3d11400cee7b5b409203af0632aa2)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I543cd2276d2f63ed2036a1c1259c9a07cb8a4ba8
Reviewed-on: http://review.coreboot.org/8518
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
---
 toolchain.inc          |  3 +++
 util/crossgcc/Makefile |  9 ++++++++-
 util/xcompile/xcompile | 10 +++++++++-
 3 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/toolchain.inc b/toolchain.inc
index f8c7ea4ac3..f888d68d0a 100644
--- a/toolchain.inc
+++ b/toolchain.inc
@@ -58,11 +58,14 @@ ARCHDIR-x86_32  := x86
 ARCHDIR-arm     := arm
 ARCHDIR-arm64   := arm64
 ARCHDIR-riscv   := riscv
+ARCHDIR-mipsel  := mips
 
 CFLAGS_arm      := -mno-unaligned-access -ffunction-sections -fdata-sections
 
 CFLAGS_arm64 := -ffunction-sections -fdata-sections
 
+CFLAGS_mipsel   := -mips32r2 -G 0
+
 toolchain_to_dir = \
 	$(foreach arch,$(ARCH_SUPPORTED),\
 	$(eval CPPFLAGS_$(arch) += \
diff --git a/util/crossgcc/Makefile b/util/crossgcc/Makefile
index 4aa6bdc2d6..0785b65cca 100644
--- a/util/crossgcc/Makefile
+++ b/util/crossgcc/Makefile
@@ -1,4 +1,4 @@
-all: build-i386 build-armv7a build-aarch64
+all: build-i386 build-armv7a build-aarch64 build-mips
 
 build-i386:
 	bash ./buildgcc -G -p i386-elf
@@ -9,6 +9,9 @@ build-armv7a:
 build-aarch64:
 	bash ./buildgcc -G -p aarch64-elf
 
+build-mips:
+	bash ./buildgcc -G -p mips-elf
+
 .PHONY: build-i386-without-gdb
 build-i386-without-gdb:
 	bash ./buildgcc -p i386-elf
@@ -21,6 +24,10 @@ build-armv7a-without-gdb:
 build-aarch64-without-gdb:
 	bash ./buildgcc -p aarch64-elf
 
+.PHONY: build-mips-without-gdb
+build-mips-without-gdb:
+	bash ./buildgcc -p mips-elf
+
 clean:
 	rm -rf xgcc
 
diff --git a/util/xcompile/xcompile b/util/xcompile/xcompile
index ea2eb47f73..29cad285cf 100755
--- a/util/xcompile/xcompile
+++ b/util/xcompile/xcompile
@@ -168,7 +168,7 @@ EOF
 }
 
 # Architecture definition
-SUPPORTED_ARCHITECTURE="x86 arm arm64 riscv"
+SUPPORTED_ARCHITECTURE="x86 arm arm64 riscv mipsel"
 
 arch_config_arm() {
 	TARCH="arm"
@@ -204,6 +204,14 @@ arch_config_x86() {
 	TABI="elf"
 }
 
+arch_config_mipsel() {
+	TARCH="mipsel"
+	TBFDARCH="littlemips"
+	TCLIST="mipsel"
+	TWIDTH="32"
+	TABI="elf"
+}
+
 test_architecture() {
 	architecture=$1
 
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