system/easy-kernel-power8: lo, our first kernel flavour

system/easy-kernel-power8/APKBUILD

+# Contributor: A. Wilcox <awilfox@adelielinux.org>
+# Maintainer: Adelie Platform Group <adelie-devel@lists.adelielinux.org>
+_pkgname=easy-kernel-power8
+pkgver=4.14.48
+pkgrel=8
+pkgname=$_pkgname-$pkgver-mc$pkgrel
+pkgdesc="The Linux kernel, packaged for POWER8 and POWER9 computers"
+url="https://kernel.org/"
+arch="ppc64"
+options="!check !dbg !strip !tracedeps"
+license="GPL-2.0-only"
+depends=""
+makedepends="bc gzip lzop openssl-dev xz"
+install=""
+provides="easy-kernel=$pkgver-r$pkgrel"
+subpackages="$_pkgname-modules-$pkgver-mc$pkgrel:modules
+	$_pkgname-src-$pkgver-mc$pkgrel:src"
+source="https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.14.tar.xz
+	https://distfiles.adelielinux.org/source/linux-4.14-mc$pkgrel.patch.xz
+	ast-endianness.patch
+	config-ppc64"
+builddir="$srcdir/linux-4.14"
+
+prepare() {
+	default_prepare
+	cd "$srcdir"
+	cat linux-4.14-mc$pkgrel.patch.xz | unxz -> linux-4.14-mc$pkgrel.patch
+	cd "$builddir"
+	patch -Np1 <../linux-4.14-mc$pkgrel.patch
+	cd "$srcdir"
+	cp config-$CARCH linux-4.14/.config
+	cp -pr linux-4.14 linux-src
+}
+
+build() {
+	cd "$builddir"
+	make LDFLAGS=""
+}
+
+package() {
+	cd "$builddir"
+	mkdir -p "$pkgdir"/boot
+	make INSTALL_PATH="$pkgdir"/boot \
+		INSTALL_MOD_PATH="$pkgdir" \
+		install modules_install
+
+	if [ -f "$pkgdir"/boot/vmlinuz ]; then
+		mv "$pkgdir"/boot/vmlinuz \
+			"$pkgdir"/boot/vmlinuz-$pkgver-mc$pkgrel-easy
+	fi
+	if [ -f "$pkgdir"/boot/vmlinux ]; then
+		mv "$pkgdir"/boot/vmlinux \
+			"$pkgdir"/boot/vmlinux-$pkgver-mc$pkgrel-easy
+	fi
+
+	install -D "$builddir"/include/config/kernel.release \
+		"$pkgdir"/usr/share/kernel/easy-$pkgver-mc$pkgrel/kernel.release
+}
+
+modules() {
+	pkgdesc="Modules / device drivers for easy-kernel"
+	provides="easy-kernel-modules=$pkgver-r$pkgrel"
+	autodeps=0  # modules should not depend on src just for symlink
+	mkdir -p "$subpkgdir"/lib
+	mv "$pkgdir"/lib/modules "$subpkgdir"/lib/
+	rm "$subpkgdir"/lib/modules/$pkgver-mc$pkgrel-easy/build
+	rm "$subpkgdir"/lib/modules/$pkgver-mc$pkgrel-easy/source
+	ln -s "../../../usr/src/linux-$pkgver-mc$pkgrel" \
+		"$subpkgdir"/lib/modules/$pkgver-mc$pkgrel-easy/build
+	ln -s "../../../usr/src/linux-$pkgver-mc$pkgrel" \
+		"$subpkgdir"/lib/modules/$pkgver-mc$pkgrel-easy/source
+}
+
+src() {
+	pkgdesc="Kernel source code used to build the kernel"
+	provides="easy-kernel-src=$pkgver-r$pkgrel"
+	mkdir -p "$subpkgdir"/usr/src
+	mv "$srcdir"/linux-src "$subpkgdir"/usr/src/linux-$pkgver-mc$pkgrel
+}
+sha512sums="77e43a02d766c3d73b7e25c4aafb2e931d6b16e870510c22cef0cdb05c3acb7952b8908ebad12b10ef982c6efbe286364b1544586e715cf38390e483927904d8  linux-4.14.tar.xz
+3fe2da1714cc83d909ba43d27c7f22ef4f2a6ecfd91ff81e0e141a0dd742ec78ad11392186871762f410615ae7c7f33dd814e0f194c7f7aed1dee2d9fca0252d  linux-4.14-mc8.patch.xz
+e41d9111219342ad13367902242444ecdd847a93575c3f9709d6c6a075bc650f4a15be9db1a8798435fc0a0b56d41705829bfe0d2c2d88f8d1c28931e27ef5be  ast-endianness.patch
+5fc64889be042c2bc7c890f4c66d12dd5b9765b21dacfe23d57c7d8a863798065cd555842db6cbf4a628fedab4952371899e1f6249ab852d3b565640030f2e12  config-ppc64"

system/easy-kernel-power8/ast-endianness.patch

+Author: Elizabeth Myers <elizabeth@adelielinux.org>
+
+I'm certain this fix is wrong fwiw, but it's the best I could come with
+
+--- linux-4.14/drivers/gpu/drm/ast/ast_fb.c.old	2017-11-12 12:46:13.000000000 -0600
++++ linux-4.14/drivers/gpu/drm/ast/ast_fb.c	2018-06-30 20:54:43.530000000 -0500
+@@ -109,9 +109,30 @@
+ 		unmap = true;
+ 	}
+ 	for (i = y; i <= y2; i++) {
++		int copy_width = x2 - x + 1;
+ 		/* assume equal stride for now */
+ 		src_offset = dst_offset = i * afbdev->afb.base.pitches[0] + (x * bpp);
+-		memcpy_toio(bo->kmap.virtual + src_offset, afbdev->sysram + src_offset, (x2 - x + 1) * bpp);
++		switch (bpp) {
++			case 4:
++				while (copy_width) {
++					iowrite32(*(u32 *)(afbdev->sysram + src_offset),
++						    bo->kmap.virtual + src_offset);
++					src_offset += 4;
++					copy_width--;
++				}
++				break;
++			case 2:
++				while (copy_width) {
++					iowrite16(*(u16 *)(afbdev->sysram + src_offset),
++						   bo->kmap.virtual + src_offset);
++					src_offset += 2;
++					copy_width--;
++				}
++				break;
++			default:
++				memcpy_toio(bo->kmap.virtual + src_offset, afbdev->sysram + src_offset, (x2 - x + 1) * bpp);
++				break;
++		}
+ 
+ 	}
+ 	if (unmap)