diff options
Diffstat (limited to 'sys-kernel/mips-sources/mips-sources-4.19.195.ebuild')
| -rw-r--r-- | sys-kernel/mips-sources/mips-sources-4.19.195.ebuild | 340 |
1 files changed, 340 insertions, 0 deletions
diff --git a/sys-kernel/mips-sources/mips-sources-4.19.195.ebuild b/sys-kernel/mips-sources/mips-sources-4.19.195.ebuild new file mode 100644 index 000000000000..52f4f25547f4 --- /dev/null +++ b/sys-kernel/mips-sources/mips-sources-4.19.195.ebuild @@ -0,0 +1,340 @@ +# Copyright 1999-2021 Gentoo Authors +# Distributed under the terms of the GNU General Public License v2 + +# EAPI Version +EAPI="6" + +#//------------------------------------------------------------------------------ + +# Version Data +GENPATCHREV="3" # Tarball revision for patches + +# Directories +S="${WORKDIR}/linux-${OKV}" +MIPS_PATCHES="${WORKDIR}/mips-patches" + +# Kernel-2 Vars +K_SECURITY_UNSUPPORTED="yes" +K_NOUSENAME="yes" +K_NOSETEXTRAVERSION="yes" +K_NOUSEPR="yes" +K_BASE_VER="4.18" +K_FROM_GIT="yes" +ETYPE="sources" + +# Inherit Eclasses +inherit kernel-2 eapi7-ver +detect_version + +# Version Data +F_KV="${PVR}" +BASE_KV="$(ver_cut 1-2).0" +[[ "${EXTRAVERSION}" = -rc* ]] && KVE="${EXTRAVERSION}" + +# Portage Vars +HOMEPAGE="https://wiki.gentoo.org/wiki/Project:MIPS" +KEYWORDS="-* ~mips" +IUSE="experimental ip27 ip28 ip30" + +# Specify any patches or patch familes to NOT apply here. +# Use only the 4-digit number followed by a '*'. +P_EXCLUDE="" + +# Machine Support Control Variables +DO_IP22="test" # If "yes", enable IP22 support (SGI Indy, Indigo2 R4x00) +DO_IP27="yes" # IP27 support (SGI Origin) +DO_IP28="test" # IP28 support (SGI Indigo2 Impact R10000) +DO_IP30="yes" # IP30 support (SGI Octane) +DO_IP32="yes" # IP32 support (SGI O2, R5000/RM5200 Only) + +# Machine Stable Version Variables +SV_IP22="" # If set && DO_IP22 == "no", indicates last "good" IP22 version +SV_IP27="" # DO_IP27 == "no", IP27 +SV_IP28="" # DO_IP28 == "no", IP28 +SV_IP30="" # DO_IP30 == "no", IP30 +SV_IP32="" # DO_IP32 == "no", IP32 + +DESCRIPTION="Kernel.org sources for MIPS-based machines" +SRC_URI="${KERNEL_URI} + https://dev.gentoo.org/~kumba/distfiles/${PN}-${BASE_KV}-patches-v${GENPATCHREV}.tar.xz" + +#//------------------------------------------------------------------------------ + +err_disabled_mach() { + # Get args + local m_name="${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 "IP27 Origin 2k/Onyx2 systems may be prone to sudden hard lockups." + ewarn "The exact trigger is unknown at this time." + 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}" + for x in {ip27,ip28,ip30}; do + use ${x} && v="${v}.${x}" && break + done + + local old="${WORKDIR}/linux-${fkv/_/-}" + local new="${WORKDIR}/linux-${v}" + if [ "${old}" != "${new}" ]; then + mv "${old}" "${new}" || die + fi + S="${new}" + + # Set the EXTRAVERSION to linux-VERSION-mipsgit-GITDATE + EXTRAVERSION="${EXTRAVERSION}-gentoo-mips" + unpack_set_extraversion +} + +src_prepare() { + local psym="patch-symlinks" + + # Now go into the kernel source and patch it. + cd "${S}" + eapply "${WORKDIR}/${psym}"/ + + eapply_user +} + +#//------------------------------------------------------------------------------ |