Build stage3 kernel from the linux-4.1.y-riscv branch of https://github.com/riscv...

[fedora-riscv.git] / Makefile

diff --git a/Makefile b/Makefile
index edf9786..4b6b633 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -23,6 +23,14 @@ GLIBC_VERSION    = 2.22
 GCC_VERSION      = 5.3.0
 NEWLIB_VERSION   = 2.2.0
 
+# See linux-4.1.y-riscv branch of
+# https://github.com/riscv/riscv-linux
+KERNEL_VERSION   = 4.1.26
+
+# A local copy of Linux git repo so you don't have to keep downloading
+# git commits (optional).
+LOCAL_LINUX_GIT_COPY = $(HOME)/d/linux
+
 all: stage1 stage2 stage3 stage4
 
 # Stage 1
@@ -217,30 +225,21 @@ stamp-riscv-pk-installed:
 
 # Stage 3
 
-stage3: stage3-kernel/linux-4.6.2.tar.xz \
-       stage3-kernel/linux-4.6.2/vmlinux
-
-stage3-kernel/linux-4.6.2.tar.xz:
-       rm -f $@ $@-t
-       wget -O $@-t https://www.kernel.org/pub/linux/kernel/v4.x/linux-4.6.2.tar.xz
-       mv $@-t $@
+stage3: stage3-kernel/linux-$(KERNEL_VERSION)/vmlinux
 
-stage3-kernel/linux-4.6.2/vmlinux:
-       rm -rf stage3-kernel/linux-4.6.2
-       cat stage3-kernel/linux-4.6.2.tar.xz | tar -x --xz -C stage3-kernel
-       cd stage3-kernel/linux-4.6.2 && \
-       git init
-       cd stage3-kernel/linux-4.6.2 && \
-       git remote add origin https://github.com/lowrisc/riscv-linux.git
-       cd stage3-kernel/linux-4.6.2 && \
-       git fetch
-       cd stage3-kernel/linux-4.6.2 && \
-       git checkout -f -t origin/debug-v0.3
-       cd stage3-kernel/linux-4.6.2 && \
-       patch -p1 < spi_sd_power_hack.patch
-       cd stage3-kernel/linux-4.6.2 && \
-       make ARCH=riscv defconfig
-       cd stage3-kernel/linux-4.6.2 && \
+stage3-kernel/linux-$(KERNEL_VERSION)/vmlinux:
+       rm -rf stage3-kernel/linux-$(KERNEL_VERSION)
+       cp -a $(LOCAL_LINUX_GIT_COPY) stage3-kernel/linux-$(KERNEL_VERSION) || { \
+         mkdir stage3-kernel/linux-$(KERNEL_VERSION) && \
+         cd stage3-kernel/linux-$(KERNEL_VERSION) && \
+         git init; \
+       }
+       cd stage3-kernel/linux-$(KERNEL_VERSION) && \
+       git remote add riscv https://github.com/riscv/riscv-linux && \
+       git fetch riscv && \
+       git checkout -f linux-4.1.y-riscv && \
+       make mrproper && \
+       make ARCH=riscv defconfig && \
        make ARCH=riscv CONFIG_CROSS_COMPILE=riscv64-unknown-elf- vmlinux
        ls -l $@