nixpkgs/lib/systems/platforms.nix

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Convert libs to a fixed-point This does break the API of being able to import any lib file and get its libs, however I'm not sure people did this. I made this while exploring being able to swap out docFn with a stub in #2305, to avoid functor performance problems. I don't know if that is going to move forward (or if it is a problem or not,) but after doing all this work figured I'd put it up anyway :) Two notable advantages to this approach: 1. when a lib inherits another lib's functions, it doesn't automatically get put in to the scope of lib 2. when a lib implements a new obscure functions, it doesn't automatically get put in to the scope of lib Using the test script (later in this commit) I got the following diff on the API: + diff master fixed-lib 11764a11765,11766 > .types.defaultFunctor > .types.defaultTypeMerge 11774a11777,11778 > .types.isOptionType > .types.isType 11781a11786 > .types.mkOptionType 11788a11794 > .types.setType 11795a11802 > .types.types This means that this commit _adds_ to the API, however I can't find a way to fix these last remaining discrepancies. At least none are _removed_. Test script (run with nix-repl in the PATH): #!/bin/sh set -eux repl() { suff=${1:-} echo "(import ./lib)$suff" \ | nix-repl 2>&1 } attrs_to_check() { repl "${1:-}" \ | tr ';' $'\n' \ | grep "\.\.\." \ | cut -d' ' -f2 \ | sed -e "s/^/${1:-}./" \ | sort } summ() { repl "${1:-}" \ | tr ' ' $'\n' \ | sort \ | uniq } deep_summ() { suff="${1:-}" depth="${2:-4}" depth=$((depth - 1)) summ "$suff" for attr in $(attrs_to_check "$suff" | grep -v "types.types"); do if [ $depth -eq 0 ]; then summ "$attr" | sed -e "s/^/$attr./" else deep_summ "$attr" "$depth" | sed -e "s/^/$attr./" fi done } ( cd nixpkgs #git add . #git commit -m "Auto-commit, sorry" || true git checkout fixed-lib deep_summ > ../fixed-lib git checkout master deep_summ > ../master ) if diff master fixed-lib; then echo "SHALLOW MATCH!" fi ( cd nixpkgs git checkout fixed-lib repl .types )
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{ lib }:
rec {
pc = {
linux-kernel = {
name = "pc";
baseConfig = "defconfig";
# Build whatever possible as a module, if not stated in the extra config.
autoModules = true;
target = "bzImage";
};
};
pc_simplekernel = lib.recursiveUpdate pc {
linux-kernel.autoModules = false;
};
powernv = {
linux-kernel = {
name = "PowerNV";
baseConfig = "powernv_defconfig";
target = "zImage";
installTarget = "install";
file = "vmlinux";
autoModules = true;
# avoid driver/FS trouble arising from unusual page size
extraConfig = ''
PPC_64K_PAGES n
PPC_4K_PAGES y
IPV6 y
'';
};
};
##
## ARM
##
pogoplug4 = {
linux-kernel = {
name = "pogoplug4";
baseConfig = "multi_v5_defconfig";
autoModules = false;
extraConfig = ''
# Ubi for the mtd
MTD_UBI y
UBIFS_FS y
UBIFS_FS_XATTR y
UBIFS_FS_ADVANCED_COMPR y
UBIFS_FS_LZO y
UBIFS_FS_ZLIB y
UBIFS_FS_DEBUG n
'';
makeFlags = [ "LOADADDR=0x8000" ];
target = "uImage";
# TODO reenable once manual-config's config actually builds a .dtb and this is checked to be working
#DTB = true;
};
gcc = {
arch = "armv5te";
};
};
sheevaplug = {
linux-kernel = {
name = "sheevaplug";
baseConfig = "multi_v5_defconfig";
autoModules = false;
extraConfig = ''
BLK_DEV_RAM y
BLK_DEV_INITRD y
BLK_DEV_CRYPTOLOOP m
BLK_DEV_DM m
DM_CRYPT m
MD y
REISERFS_FS m
BTRFS_FS m
XFS_FS m
JFS_FS m
EXT4_FS m
USB_STORAGE_CYPRESS_ATACB m
# mv cesa requires this sw fallback, for mv-sha1
CRYPTO_SHA1 y
# Fast crypto
CRYPTO_TWOFISH y
CRYPTO_TWOFISH_COMMON y
CRYPTO_BLOWFISH y
CRYPTO_BLOWFISH_COMMON y
IP_PNP y
IP_PNP_DHCP y
NFS_FS y
ROOT_NFS y
TUN m
NFS_V4 y
NFS_V4_1 y
NFS_FSCACHE y
NFSD m
NFSD_V2_ACL y
NFSD_V3 y
NFSD_V3_ACL y
NFSD_V4 y
NETFILTER y
IP_NF_IPTABLES y
IP_NF_FILTER y
IP_NF_MATCH_ADDRTYPE y
IP_NF_TARGET_LOG y
IP_NF_MANGLE y
IPV6 m
VLAN_8021Q m
CIFS y
CIFS_XATTR y
CIFS_POSIX y
CIFS_FSCACHE y
CIFS_ACL y
WATCHDOG y
WATCHDOG_CORE y
ORION_WATCHDOG m
ZRAM m
NETCONSOLE m
# Disable OABI to have seccomp_filter (required for systemd)
# https://github.com/raspberrypi/firmware/issues/651
OABI_COMPAT n
# Fail to build
DRM n
SCSI_ADVANSYS n
USB_ISP1362_HCD n
SND_SOC n
SND_ALI5451 n
FB_SAVAGE n
SCSI_NSP32 n
ATA_SFF n
SUNGEM n
IRDA n
ATM_HE n
SCSI_ACARD n
BLK_DEV_CMD640_ENHANCED n
FUSE_FS m
# systemd uses cgroups
CGROUPS y
# Latencytop
LATENCYTOP y
# Ubi for the mtd
MTD_UBI y
UBIFS_FS y
UBIFS_FS_XATTR y
UBIFS_FS_ADVANCED_COMPR y
UBIFS_FS_LZO y
UBIFS_FS_ZLIB y
UBIFS_FS_DEBUG n
# Kdb, for kernel troubles
KGDB y
KGDB_SERIAL_CONSOLE y
KGDB_KDB y
'';
makeFlags = [ "LOADADDR=0x0200000" ];
target = "uImage";
DTB = true; # Beyond 3.10
};
gcc = {
arch = "armv5te";
};
};
raspberrypi = {
linux-kernel = {
name = "raspberrypi";
baseConfig = "bcm2835_defconfig";
DTB = true;
autoModules = true;
preferBuiltin = true;
extraConfig = ''
# Disable OABI to have seccomp_filter (required for systemd)
# https://github.com/raspberrypi/firmware/issues/651
OABI_COMPAT n
'';
target = "zImage";
};
gcc = {
arch = "armv6";
fpu = "vfp";
};
};
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# Legacy attribute, for compatibility with existing configs only.
raspberrypi2 = armv7l-hf-multiplatform;
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zero-gravitas = {
linux-kernel = {
name = "zero-gravitas";
baseConfig = "zero-gravitas_defconfig";
# Target verified by checking /boot on reMarkable 1 device
target = "zImage";
autoModules = false;
DTB = true;
};
gcc = {
fpu = "neon";
cpu = "cortex-a9";
};
};
zero-sugar = {
linux-kernel = {
name = "zero-sugar";
baseConfig = "zero-sugar_defconfig";
DTB = true;
autoModules = false;
preferBuiltin = true;
target = "zImage";
};
gcc = {
cpu = "cortex-a7";
fpu = "neon-vfpv4";
float-abi = "hard";
};
};
scaleway-c1 = lib.recursiveUpdate armv7l-hf-multiplatform {
gcc = {
cpu = "cortex-a9";
fpu = "vfpv3";
};
};
utilite = {
linux-kernel = {
name = "utilite";
maseConfig = "multi_v7_defconfig";
autoModules = false;
extraConfig = ''
# Ubi for the mtd
MTD_UBI y
UBIFS_FS y
UBIFS_FS_XATTR y
UBIFS_FS_ADVANCED_COMPR y
UBIFS_FS_LZO y
UBIFS_FS_ZLIB y
UBIFS_FS_DEBUG n
'';
makeFlags = [ "LOADADDR=0x10800000" ];
target = "uImage";
DTB = true;
};
gcc = {
cpu = "cortex-a9";
fpu = "neon";
};
};
guruplug = lib.recursiveUpdate sheevaplug {
# Define `CONFIG_MACH_GURUPLUG' (see
# <http://kerneltrap.org/mailarchive/git-commits-head/2010/5/19/33618>)
# and other GuruPlug-specific things. Requires the `guruplug-defconfig'
# patch.
linux-kernel.baseConfig = "guruplug_defconfig";
};
beaglebone = lib.recursiveUpdate armv7l-hf-multiplatform {
linux-kernel = {
name = "beaglebone";
baseConfig = "bb.org_defconfig";
autoModules = false;
extraConfig = ""; # TBD kernel config
target = "zImage";
};
};
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# https://developer.android.com/ndk/guides/abis#v7a
armv7a-android = {
linux-kernel.name = "armeabi-v7a";
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gcc = {
arch = "armv7-a";
float-abi = "softfp";
fpu = "vfpv3-d16";
};
};
armv7l-hf-multiplatform = {
linux-kernel = {
name = "armv7l-hf-multiplatform";
Major = "2.6"; # Using "2.6" enables 2.6 kernel syscalls in glibc.
baseConfig = "multi_v7_defconfig";
DTB = true;
autoModules = true;
preferBuiltin = true;
target = "zImage";
extraConfig = ''
# Serial port for Raspberry Pi 3. Wasn't included in ARMv7 defconfig
# until 4.17.
SERIAL_8250_BCM2835AUX y
SERIAL_8250_EXTENDED y
SERIAL_8250_SHARE_IRQ y
# Hangs ODROID-XU4
ARM_BIG_LITTLE_CPUIDLE n
# Disable OABI to have seccomp_filter (required for systemd)
# https://github.com/raspberrypi/firmware/issues/651
OABI_COMPAT n
# >=5.12 fails with:
# drivers/net/ethernet/micrel/ks8851_common.o: in function `ks8851_probe_common':
# ks8851_common.c:(.text+0x179c): undefined reference to `__this_module'
# See: https://lore.kernel.org/netdev/20210116164828.40545-1-marex@denx.de/T/
KS8851_MLL y
'';
};
gcc = {
# Some table about fpu flags:
# http://community.arm.com/servlet/JiveServlet/showImage/38-1981-3827/blogentry-103749-004812900+1365712953_thumb.png
# Cortex-A5: -mfpu=neon-fp16
# Cortex-A7 (rpi2): -mfpu=neon-vfpv4
# Cortex-A8 (beaglebone): -mfpu=neon
# Cortex-A9: -mfpu=neon-fp16
# Cortex-A15: -mfpu=neon-vfpv4
# More about FPU:
# https://wiki.debian.org/ArmHardFloatPort/VfpComparison
# vfpv3-d16 is what Debian uses and seems to be the best compromise: NEON is not supported in e.g. Scaleway or Tegra 2,
# and the above page suggests NEON is only an improvement with hand-written assembly.
arch = "armv7-a";
fpu = "vfpv3-d16";
# For Raspberry Pi the 2 the best would be:
# cpu = "cortex-a7";
# fpu = "neon-vfpv4";
};
};
aarch64-multiplatform = {
linux-kernel = {
name = "aarch64-multiplatform";
baseConfig = "defconfig";
DTB = true;
autoModules = true;
preferBuiltin = true;
extraConfig = ''
# Raspberry Pi 3 stuff. Not needed for s >= 4.10.
ARCH_BCM2835 y
BCM2835_MBOX y
BCM2835_WDT y
RASPBERRYPI_FIRMWARE y
RASPBERRYPI_POWER y
SERIAL_8250_BCM2835AUX y
SERIAL_8250_EXTENDED y
SERIAL_8250_SHARE_IRQ y
# Cavium ThunderX stuff.
PCI_HOST_THUNDER_ECAM y
# Nvidia Tegra stuff.
PCI_TEGRA y
# The default (=y) forces us to have the XHCI firmware available in initrd,
# which our initrd builder can't currently do easily.
USB_XHCI_TEGRA m
'';
target = "Image";
};
gcc = {
arch = "armv8-a";
};
};
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apple-m1 = {
gcc = {
arch = "armv8.3-a+crypto+sha2+aes+crc+fp16+lse+simd+ras+rdm+rcpc";
cpu = "apple-a13";
};
};
##
## MIPS
##
ben_nanonote = {
linux-kernel = {
name = "ben_nanonote";
};
gcc = {
arch = "mips32";
float = "soft";
};
};
fuloong2f_n32 = {
linux-kernel = {
name = "fuloong2f_n32";
baseConfig = "lemote2f_defconfig";
autoModules = false;
extraConfig = ''
MIGRATION n
COMPACTION n
# nixos mounts some cgroup
CGROUPS y
BLK_DEV_RAM y
BLK_DEV_INITRD y
BLK_DEV_CRYPTOLOOP m
BLK_DEV_DM m
DM_CRYPT m
MD y
REISERFS_FS m
EXT4_FS m
USB_STORAGE_CYPRESS_ATACB m
IP_PNP y
IP_PNP_DHCP y
IP_PNP_BOOTP y
NFS_FS y
ROOT_NFS y
TUN m
NFS_V4 y
NFS_V4_1 y
NFS_FSCACHE y
NFSD m
NFSD_V2_ACL y
NFSD_V3 y
NFSD_V3_ACL y
NFSD_V4 y
# Fail to build
DRM n
SCSI_ADVANSYS n
USB_ISP1362_HCD n
SND_SOC n
SND_ALI5451 n
FB_SAVAGE n
SCSI_NSP32 n
ATA_SFF n
SUNGEM n
IRDA n
ATM_HE n
SCSI_ACARD n
BLK_DEV_CMD640_ENHANCED n
FUSE_FS m
# Needed for udev >= 150
SYSFS_DEPRECATED_V2 n
VGA_CONSOLE n
VT_HW_CONSOLE_BINDING y
SERIAL_8250_CONSOLE y
FRAMEBUFFER_CONSOLE y
EXT2_FS y
EXT3_FS y
REISERFS_FS y
MAGIC_SYSRQ y
# The kernel doesn't boot at all, with FTRACE
FTRACE n
'';
target = "vmlinux";
};
gcc = {
arch = "loongson2f";
float = "hard";
abi = "n32";
};
};
##
## Other
##
riscv-multiplatform = {
linux-kernel = {
name = "riscv-multiplatform";
target = "Image";
autoModules = true;
baseConfig = "defconfig";
DTB = true;
extraConfig = ''
SERIAL_OF_PLATFORM y
'';
};
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};
select = platform:
# x86
/**/ if platform.isx86 then pc
# ARM
else if platform.isAarch32 then let
version = platform.parsed.cpu.version or null;
in if version == null then pc
else if lib.versionOlder version "6" then sheevaplug
else if lib.versionOlder version "7" then raspberrypi
else armv7l-hf-multiplatform
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else if platform.isAarch64 then
if platform.isDarwin then apple-m1
else aarch64-multiplatform
else if platform.isRiscV then riscv-multiplatform
else if platform.parsed.cpu == lib.systems.parse.cpuTypes.mipsel then fuloong2f_n32
else if platform.parsed.cpu == lib.systems.parse.cpuTypes.powerpc64le then powernv
else pc;
}