--- /dev/null
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+# EAPI Version
+EAPI="6"
+
+#//------------------------------------------------------------------------------
+
+# Version Data
+GITDATE="20180705" # Date of diff between kernel.org and lmo GIT
+GENPATCHREV="1" # Tarball revision for patches
+
+# Directories
+S="${WORKDIR}/linux-${OKV}-${GITDATE}"
+MIPS_PATCHES="${WORKDIR}/mips-patches"
+
+# Kernel-2 Vars
+K_SECURITY_UNSUPPORTED="yes"
+K_NOUSENAME="yes"
+K_NOSETEXTRAVERSION="yes"
+K_NOUSEPR="yes"
+K_BASE_VER="4.16"
+K_FROM_GIT="yes"
+ETYPE="sources"
+
+# Inherit Eclasses
+inherit kernel-2 eutils eapi7-ver
+detect_version
+
+# Version Data
+F_KV="${PVR}"
+BASE_KV="$(ver_cut 1-2).0"
+[[ "${EXTRAVERSION}" = -rc* ]] && KVE="${EXTRAVERSION}"
+
+# Portage Vars
+HOMEPAGE="https://www.linux-mips.org/ https://www.gentoo.org/"
+KEYWORDS="-* ~mips"
+IUSE="experimental ip27 ip28 ip30"
+RDEPEND=""
+DEPEND="${RDEPEND}
+ >=sys-devel/gcc-4.7.0
+ >=sys-devel/patch-2.7.4"
+
+# Specify any patches or patch familes to NOT apply here.
+# Use only the 4-digit number followed by a '*'.
+P_EXCLUDE=""
+
+# Machine Support Control Variables
+DO_IP22="test" # If "yes", enable IP22 support (SGI Indy, Indigo2 R4x00)
+DO_IP27="yes" # IP27 support (SGI Origin)
+DO_IP28="test" # IP28 support (SGI Indigo2 Impact R10000)
+DO_IP30="yes" # IP30 support (SGI Octane)
+DO_IP32="yes" # IP32 support (SGI O2, R5000/RM5200 Only)
+
+# Machine Stable Version Variables
+SV_IP22="" # If set && DO_IP22 == "no", indicates last "good" IP22 version
+SV_IP27="" # DO_IP27 == "no", IP27
+SV_IP28="" # DO_IP28 == "no", IP28
+SV_IP30="" # DO_IP30 == "no", IP30
+SV_IP32="" # DO_IP32 == "no", IP32
+
+DESCRIPTION="Linux-Mips GIT sources for MIPS-based machines, dated ${GITDATE}"
+SRC_URI="${KERNEL_URI}
+ mirror://gentoo/mipsgit-${BASE_KV}${KVE}-${GITDATE}.diff.xz
+ mirror://gentoo/${PN}-${BASE_KV}-patches-v${GENPATCHREV}.tar.xz"
+
+UNIPATCH_STRICTORDER="yes"
+UNIPATCH_LIST="${DISTDIR}/mipsgit-${BASE_KV}${KVE}-${GITDATE}.diff.xz"
+
+#//------------------------------------------------------------------------------
+
+err_disabled_mach() {
+ # Get args
+ local m_name="${1}"
+ local m_abbr="${2}"
+ local m_use="${3}"
+ local is_test="${4}"
+
+ # Get stable version, if exists
+ local stable_ver="SV_${m_abbr}"
+ stable_ver="${!stable_ver}"
+
+ # See if this machine needs a USE passed or skip dying
+ local has_use
+ [ ! -z "${m_use}" -a "${m_use}" != "skip" ] && has_use="USE=\"${m_use}\" "
+
+ # Print error && (maybe) die
+ echo -e ""
+ if [ "${is_test}" != "test" ]; then
+ eerror "${m_name} Support has been disabled in this ebuild"
+ eerror "revision. If you wish to merge ${m_name} sources, then"
+ eerror "run ${has_use}emerge =mips-sources-${stable_ver}"
+ [ "${m_use}" != "skip" ] && die "${m_name} Support disabled."
+ else
+ ewarn "${m_name} Support has been marked as needing testing in this"
+ ewarn "ebuild revision. This usually means that any patches to support"
+ ewarn "${m_name} have been forward ported and maybe even compile-tested,"
+ ewarn "but not yet booted on real hardware, possibly due to a lack of access"
+ ewarn "to such hardware. If you happen to boot this kernel and have no"
+ ewarn "problems at all, then please inform the maintainer. Otherwise, if"
+ ewarn "experience a bug, an oops/panic, or some other oddity, then please"
+ ewarn "file a bug at bugs.gentoo.org, and assign it to the mips team."
+ fi
+
+ return 0
+}
+
+err_only_one_mach_allowed() {
+ echo -e ""
+ eerror "A patchset for a specific machine-type has already been selected."
+ eerror "No other patches for machines-types are permitted. You will need a"
+ eerror "separate copy of the kernel sources for each different machine-type"
+ eerror "you want to build a kernel for."
+ die "Only one machine-type patchset allowed"
+}
+
+pkg_postinst() {
+ # Symlink /usr/src/linux as appropriate
+ local my_ksrc="${S##*/}"
+ for x in {ip27,ip28,ip30}; do
+ use ${x} && my_ksrc="${my_ksrc}.${x}"
+ done
+
+ if [ ! -e "${ROOT}usr/src/linux" ]; then
+ rm -f "${ROOT}usr/src/linux"
+ ln -sf "${my_ksrc}" "${ROOT}/usr/src/linux"
+ fi
+}
+
+pkg_setup() {
+ local arch_is_selected="no"
+ local m_ip m_enable m_name
+
+ # Exclusive machine patchsets
+ # These are not allowed to be mixed together, thus only one of them may be applied
+ # to a tree per merge.
+ for x in \
+ "ip27 SGI Origin 200/2000" \
+ "ip28 SGI Indigo2 Impact R10000" \
+ "ip30 SGI Octane"
+ do
+ set -- ${x} # Set positional params
+ m_ip="${1}" # Grab the first param (HW IP for SGI)
+ shift # Shift the positions
+ m_name="${*}" # Get the rest (Name)
+
+ if use ${m_ip}; then
+ # Fetch the value indiciating if the machine is enabled or not
+ m_enable="DO_${m_ip/ip/IP}"
+ m_enable="${!m_enable}"
+
+ # Make sure only one of these exclusive machine patches is selected
+ [ "${arch_is_selected}" = "no" ] \
+ && arch_is_selected="yes" \
+ || err_only_one_mach_allowed
+
+ # Is the machine support disabled or marked as needing testing?
+ [ "${m_enable}" = "test" ] \
+ && err_disabled_mach "${m_name}" "${m_ip/ip/IP}" "${m_ip}" "test"
+ [ "${m_enable}" = "no" ] \
+ && err_disabled_mach "${m_name}" "${m_ip/ip/IP}" "${m_ip}"
+
+ # Show relevant information about the machine
+ show_${m_ip}_info
+ fi
+ done
+
+ # All other systems that don't have a USE flag go here
+ # These systems have base-line support included in linux-mips git, so
+ # instead of failing, if disabled, we simply warn the user
+ if [ "${arch_is_selected}" = "no" ]; then
+ [ "${DO_IP22}" = "no" ] \
+ && err_disabled_mach "SGI Indy/Indigo2 R4x00" "IP22" "skip" \
+ || show_ip22_info
+ [ "${DO_IP32}" = "no" ] \
+ && err_disabled_mach "SGI O2" "IP32" "skip" \
+ || show_ip32_info
+
+ fi
+}
+
+show_ip22_info() {
+ echo -e ""
+ einfo "IP22 systems with an R5000 processor should work with this release."
+ einfo "The R4x00 series of processors tend to be rather flaky, especially the"
+ einfo "R4600. If you have to run an R4x00 processor, then try to use an R4400."
+ einfo ""
+ einfo "Some Notes:"
+ einfo "\t- Supported graphics card right now is Newport (XL)."
+ einfo "\t- A driver for Extreme (XZ) does not exist at present."
+ echo -e ""
+}
+
+show_ip27_info() {
+ echo -e ""
+ ewarn "Heavy disk I/O on recent kernels may randomly trigger a VM_BUG_ON_PAGE()"
+ ewarn "in move_freepages() in mm/page_alloc.c. The exact trigger cause is"
+ ewarn "unknown at this time. Please report any oops messages from this"
+ ewarn "bug to bugs.gentoo.org (assign to mips@gentoo.org)"
+ echo -e ""
+}
+
+show_ip28_info() {
+ echo -e ""
+ einfo "Support for the Indigo2 Impact R10000 is now in the mainline kernel. However,"
+ einfo "due to the R10000 Speculative Execution issue that exists with this machine,"
+ einfo "nothing is guaranteed to work correctly. Consider enabling ${HILITE}CONFIG_KALLSYMS${NORMAL}"
+ einfo "in your kernel so that if the machine Oopes, you'll be able to provide valuable"
+ einfo "feedback that can be used to trace down the crash."
+ echo -e ""
+}
+
+show_ip30_info() {
+ echo -e ""
+ eerror "Things that DON'T work:"
+ eerror "\t- Do not use CONFIG_SLUB, otherwise, you'll get errors when booting"
+ eerror "\t\040\040regarding duplicate /sys/kernel/slab/* entries in sysfs."
+ eerror "\t- Impact (MGRAS) Xorg driver no longer functions due to severe bitrot."
+ eerror "\t- Octane is limited to a maximum of 2GB of memory right now due to a"
+ eerror "\t\040\040hardware quirk in the BRIDGE PCI chip that limits BRIDGE DMA"
+ eerror "\t\040\040addresses to 31-bits when converted into physical addresses."
+ eerror "\t\040\040Patches that attempt to fix the issue are highly welcome."
+ echo -e ""
+ ewarn "Things that might work, but have problems, or are unknown:"
+ ewarn "\t- CONFIG_TRANSPARENT_HUGEPAGE should work now, but there may still be"
+ ewarn "\t\040\040intermittent issues. Additionally, CONFIG_HUGETLBFS must also be"
+ ewarn "\t\040\040selected for hugepages to work. If use of this feature continues"
+ ewarn "\t\040\040to trigger random Instruction Bus Errors (IBEs), then it is best to"
+ ewarn "\t\040\040disable the functionality and perform a cold reset of the machine"
+ ewarn "\t\040\040after powering it down for at least 30 seconds."
+ ewarn "\t- Serial support on the Octane uses a very basic UART driver that drives"
+ ewarn "\t\040\040the 16550A chip on the IOC3 directly. It does not use interrupts,"
+ ewarn "\t\040\040only a polling routine on a timer, which makes it slow and CPU-"
+ ewarn "\t\040\040intensive. The baud rate is limited to no more than 38.4kbps on"
+ ewarn "\t\040\040this driver. Patches for getting the Altix IOC3 serial driver to"
+ ewarn "\t\040\040work (which uses DMA and supports faster baud rates) are welcome."
+ ewarn "\t- UHCI Cards are known to have issues, but should still function."
+ ewarn "\t\040\040This issue primarily manifests itself when using pl2303 USB->Serial"
+ ewarn "\t\040\040adapters."
+ ewarn "\t- MENET boards appear to have the four ethernet ports detected, however"
+ ewarn "\t\040\040the six serial ports don't appear to get picked up by the IOC3"
+ ewarn "\t\040\040UART driver. The NIC part number is also not read correctly"
+ ewarn "\t\040\040from the four Number-In-a-Cans. Additional testing would be"
+ ewarn "\t\040\040appreciated and patches welcome."
+ ewarn "\t- Other XIO-based devices, like various Impact addons, remain untested"
+ ewarn "\t\040\040and are not guaranteed to work. This applies to various digital"
+ ewarn "\t\040\040video conversion boards as well."
+ echo -e ""
+ einfo "Things that DO work:"
+ einfo "\t- SMP works again, celebrate!"
+ einfo "\t- Impact (MGRAS) console only."
+ einfo "\t- VPro (Odyssey) console only (no X driver exists yet)."
+ einfo "\t- PCI Card Cages should work for many devices, except certain types like"
+ einfo "\t\040\040PCI-to-PCI bridges (USB hubs, USB flash card readers for example)."
+ einfo "\t- SCSI, RTC, basic PCI, IOC3 Ethernet, keyboard, and mouse. Please"
+ einfo "\t\040\040report any problems with these devices."
+ echo -e ""
+}
+
+show_ip32_info() {
+ echo -e ""
+ einfo "IP32 systems function well, however there are some notes:"
+ einfo "\t- A sound driver now exists for IP32. Celebrate!"
+ einfo "\t- Framebuffer console is limited to 4MB. Anything greater"
+ einfo "\t\040\040specified when building the kernel will likely oops"
+ einfo "\t\040\040or panic the kernel."
+ einfo "\t- X support is limited to the generic fbdev driver. No X"
+ einfo "\t\040\040gbefb driver exists for O2 yet. Feel free to submit"
+ einfo "\t\040\040patches!"
+ echo -e ""
+
+ einfo "To Build 64bit kernels for SGI O2 (IP32) or SGI Indy/Indigo2 R4x00 (IP22)"
+ einfo "systems, you need to use the ${GOOD}vmlinux.32${NORMAL} make target."
+ einfo "Once done, boot the ${GOOD}vmlinux.32${NORMAL} file (NOT vmlinux)."
+}
+
+src_unpack() {
+ # Unpack the kernel sources, update to the latest rev (if needed),
+ # and apply the latest patch from linux-mips git.
+ kernel-2_src_unpack
+
+ # Unpack the mips-sources patchset to ${WORKDIR}/mips-patches-${BASE_KV}.
+ echo -e ""
+ cd "${WORKDIR}"
+ unpack "${PN}-${BASE_KV}-patches-v${GENPATCHREV}.tar.xz"
+
+ # Create a new folder called 'patch-symlinks' and create symlinks to
+ # all mips-patches in there. If we want to exclude a patch, we'll
+ # just delete the symlink instead of the actual patch.
+ local psym="patch-symlinks"
+ mkdir "${psym}"
+ cd "${psym}"
+ for x in ../mips-patches-${BASE_KV}/*.patch; do
+ ln -s "${x}" "${x##../mips-patches-*/}"
+ done
+
+ # With symlinks created, setup the variables referencing external
+ # machine patches and if a machine USE flag is enabled, then unset
+ # its corresponding variable.
+ # See 0000_README for the patch numbers and their meanings.
+ local p_generic="51*"
+ local p_ip27="52*" p_ip28="53*" p_ip30="54*"
+ local p_xp="80*"
+ use ip27 && unset p_generic p_ip27
+ use ip28 && unset p_ip28
+ use ip30 && unset p_generic p_ip30
+ use experimental && unset p_xp
+
+ # Remove symlinks for any patches that we don't want applied. We
+ # do this by looping through all the above variables, and deleting
+ # matching symlinks that point to the corresponding patches.
+ # The remaining symlinks will be applied to the kernel source.
+ #
+ # $P_EXCLUDE is a new var that can be set in an ebuild to exclude
+ # specific patches by wildcarding the patch number.
+ local patchlist="${p_generic} ${p_ip27} ${p_ip28} ${p_ip30} ${p_xp} ${P_EXCLUDE}"
+ for x in $patchlist;
+ do rm -f "./${x}"
+ done
+
+ # Rename the source tree to match the linux-mips git checkout date and
+ # machine type.
+ local fkv="${F_KV%-*}"
+ local v="${fkv}-${GITDATE}"
+ for x in {ip27,ip28,ip30}; do
+ use ${x} && v="${v}.${x}" && break
+ done
+ mv "${WORKDIR}/linux-${fkv/_/-}" "${WORKDIR}/linux-${v}" || die
+ S="${WORKDIR}/linux-${v}"
+
+ # Set the EXTRAVERSION to linux-VERSION-mipsgit-GITDATE
+ EXTRAVERSION="${EXTRAVERSION}-mipsgit-${GITDATE}"
+ unpack_set_extraversion
+}
+
+src_prepare() {
+ local psym="patch-symlinks"
+
+ # Now go into the kernel source and patch it.
+ cd "${S}"
+ epatch -p1 "${WORKDIR}/${psym}"/*.patch
+
+ eapply_user
+}
+
+#//------------------------------------------------------------------------------
projects / gentoo.git / commitdiff