On 12/21/2011 11:23 AM, Bruce Ashfield wrote: > On 11-12-21 01:58 PM, Darren Hart wrote: >> linux-yocto-tiny drops the linux-tools and sets the KMACHINE >> branch to standard/tiny. >> >> Signed-off-by: Darren Hart<dvh...@linux.intel.com> >> --- >> meta/recipes-kernel/linux/linux-yocto-tiny/ata.cfg | 9 + >> .../recipes-kernel/linux/linux-yocto-tiny/core.cfg | 19 + >> .../linux/linux-yocto-tiny/debug.cfg | 5 + >> .../linux/linux-yocto-tiny/devtmpfs.cfg | 6 + >> .../linux/linux-yocto-tiny/e1000.cfg | 7 + >> .../recipes-kernel/linux/linux-yocto-tiny/ext2.cfg | 1 + >> .../recipes-kernel/linux/linux-yocto-tiny/ext3.cfg | 2 + >> .../recipes-kernel/linux/linux-yocto-tiny/lzma.cfg | 3 + >> meta/recipes-kernel/linux/linux-yocto-tiny/net.cfg | 26 + >> .../linux/linux-yocto-tiny/qemux86/defconfig | 613 >> ++++++++++++++++++++ >> .../linux/linux-yocto-tiny/ramfs.cfg | 6 + >> .../linux/linux-yocto-tiny/rtc-pc.cfg | 13 + >> .../linux/linux-yocto-tiny/serial.cfg | 7 + >> meta/recipes-kernel/linux/linux-yocto-tiny/smp.cfg | 7 + >> meta/recipes-kernel/linux/linux-yocto-tiny_3.0.bb | 36 ++ >> 15 files changed, 760 insertions(+), 0 deletions(-) >> create mode 100644 meta/recipes-kernel/linux/linux-yocto-tiny/ata.cfg >> create mode 100644 meta/recipes-kernel/linux/linux-yocto-tiny/core.cfg >> create mode 100644 meta/recipes-kernel/linux/linux-yocto-tiny/debug.cfg >> create mode 100644 meta/recipes-kernel/linux/linux-yocto-tiny/devtmpfs.cfg >> create mode 100644 meta/recipes-kernel/linux/linux-yocto-tiny/e1000.cfg >> create mode 100644 meta/recipes-kernel/linux/linux-yocto-tiny/ext2.cfg >> create mode 100644 meta/recipes-kernel/linux/linux-yocto-tiny/ext3.cfg >> create mode 100644 meta/recipes-kernel/linux/linux-yocto-tiny/lzma.cfg >> create mode 100644 meta/recipes-kernel/linux/linux-yocto-tiny/net.cfg >> create mode 100644 >> meta/recipes-kernel/linux/linux-yocto-tiny/qemux86/defconfig >> create mode 100644 meta/recipes-kernel/linux/linux-yocto-tiny/ramfs.cfg >> create mode 100644 meta/recipes-kernel/linux/linux-yocto-tiny/rtc-pc.cfg >> create mode 100644 meta/recipes-kernel/linux/linux-yocto-tiny/serial.cfg >> create mode 100644 meta/recipes-kernel/linux/linux-yocto-tiny/smp.cfg >> create mode 100644 meta/recipes-kernel/linux/linux-yocto-tiny_3.0.bb >> >> diff --git a/meta/recipes-kernel/linux/linux-yocto-tiny/ata.cfg >> b/meta/recipes-kernel/linux/linux-yocto-tiny/ata.cfg >> new file mode 100644 >> index 0000000..97e4d00 >> --- /dev/null >> +++ b/meta/recipes-kernel/linux/linux-yocto-tiny/ata.cfg >> @@ -0,0 +1,9 @@ >> +# IDE disk support >> +# Dependencies >> +CONFIG_PCI=y >> +CONFIG_BLOCK=y >> +CONFIG_BLK_DEV_SD=y >> +CONFIG_ATA=y >> +CONFIG_ATA_SFF=y >> +CONFIG_ATA_BMDMA=y >> +CONFIG_ATA_PIIX=y >> diff --git a/meta/recipes-kernel/linux/linux-yocto-tiny/core.cfg >> b/meta/recipes-kernel/linux/linux-yocto-tiny/core.cfg >> new file mode 100644 >> index 0000000..7057218 >> --- /dev/null >> +++ b/meta/recipes-kernel/linux/linux-yocto-tiny/core.cfg >> @@ -0,0 +1,19 @@ >> +# Basic facilities that shall be present in all kernels >> + >> +# Needed to execute... anything (like init) >> +CONFIG_BINFMT_ELF=y >> + >> +# Needed by at least the telephony daemon >> +CONFIG_SIGNALFD=y >> + >> +# At least bootlogd requires this >> +CONFIG_UNIX98_PTYS=y >> + >> +# Required for basic IPC and pthread locking support >> +CONFIG_SYSVIPC=y >> +CONFIG_FUTEX=y >> +CONFIG_RT_MUTEXES=y >> + >> +CONFIG_PROC_FS=y >> +CONFIG_SYSFS=y >> + >> diff --git a/meta/recipes-kernel/linux/linux-yocto-tiny/debug.cfg >> b/meta/recipes-kernel/linux/linux-yocto-tiny/debug.cfg >> new file mode 100644 >> index 0000000..886bfd9 >> --- /dev/null >> +++ b/meta/recipes-kernel/linux/linux-yocto-tiny/debug.cfg >> @@ -0,0 +1,5 @@ >> +# Debug options >> +# +98k bzImage >> +CONFIG_PRINTK=y >> +CONFIG_EARLY_PRINTK=y >> +CONFIG_PRINTK_TIME=y > > Taking the closer look that I promised. Did you build with printk > completely disabled ? It used to produce invalid images, so I was > curious to know if that has been fixed.
I have indeed, it works fine. I find that leaving it in is the better option and just setting the LOGLEVEL in the kernel parameters if you want a silent boot. You get all the boot time advantages while still being able to debug your kernel. EARLY_PRINTK and PRINTK_TIME might be something we make options. > > Anytime I see debug, I always think 'optional' (i.e. like the cfg/debug.cfg > that I've had in the past). Yeah, CONFIG_PRINTK should move into "core policy" I think when we define the tiny ktype. > > 98k isn't much to add, but in a crunch, these could easily be made > optional. > >> diff --git a/meta/recipes-kernel/linux/linux-yocto-tiny/devtmpfs.cfg >> b/meta/recipes-kernel/linux/linux-yocto-tiny/devtmpfs.cfg >> new file mode 100644 >> index 0000000..07632e2 >> --- /dev/null >> +++ b/meta/recipes-kernel/linux/linux-yocto-tiny/devtmpfs.cfg >> @@ -0,0 +1,6 @@ >> +# For /dev and udev >> +# Could eliminate for a static /dev tree >> +# +1.5k bzImage >> +CONFIG_HOTPLUG=y >> +CONFIG_DEVTMPFS=y >> +CONFIG_DEVTMPFS_MOUNT=y >> diff --git a/meta/recipes-kernel/linux/linux-yocto-tiny/e1000.cfg >> b/meta/recipes-kernel/linux/linux-yocto-tiny/e1000.cfg >> new file mode 100644 >> index 0000000..8e18bbb >> --- /dev/null >> +++ b/meta/recipes-kernel/linux/linux-yocto-tiny/e1000.cfg >> @@ -0,0 +1,7 @@ >> +# e1000 PCI network card support (qemu default) >> +# FIXME: This appears in dmesg, but a probe fails >> +# bzImage +31k >> +CONFIG_PCI=y >> +CONFIG_NETDEVICES=y >> +CONFIG_NETDEV_1000=y >> +CONFIG_E1000=y >> diff --git a/meta/recipes-kernel/linux/linux-yocto-tiny/ext2.cfg >> b/meta/recipes-kernel/linux/linux-yocto-tiny/ext2.cfg >> new file mode 100644 >> index 0000000..e35c36d >> --- /dev/null >> +++ b/meta/recipes-kernel/linux/linux-yocto-tiny/ext2.cfg >> @@ -0,0 +1 @@ >> +CONFIG_EXT2_FS=y >> diff --git a/meta/recipes-kernel/linux/linux-yocto-tiny/ext3.cfg >> b/meta/recipes-kernel/linux/linux-yocto-tiny/ext3.cfg >> new file mode 100644 >> index 0000000..df9dd64 >> --- /dev/null >> +++ b/meta/recipes-kernel/linux/linux-yocto-tiny/ext3.cfg >> @@ -0,0 +1,2 @@ >> +# bzImage +61k >> +CONFIG_EXT3_FS=y > > As long as we don't end up breaking things down too much, this > is fine. But if there are too many, classifying a set of filesystem > options into named/useful configs works as well. i.e. "settopbox-fs" I don't even use this one in the recipe, expecting RO fs or initramfs usage. I left it to easily allow people to add it. The journal takes up 1MB, which is more than 25 of the rootfs :-) > >> diff --git a/meta/recipes-kernel/linux/linux-yocto-tiny/lzma.cfg >> b/meta/recipes-kernel/linux/linux-yocto-tiny/lzma.cfg >> new file mode 100644 >> index 0000000..f1bafe1 >> --- /dev/null >> +++ b/meta/recipes-kernel/linux/linux-yocto-tiny/lzma.cfg >> @@ -0,0 +1,3 @@ >> +# bzImage -235k (-15% of bzImage size) >> +CONFIG_KERNEL_LZMA=y >> + >> diff --git a/meta/recipes-kernel/linux/linux-yocto-tiny/net.cfg >> b/meta/recipes-kernel/linux/linux-yocto-tiny/net.cfg >> new file mode 100644 >> index 0000000..ab6d1ee >> --- /dev/null >> +++ b/meta/recipes-kernel/linux/linux-yocto-tiny/net.cfg >> @@ -0,0 +1,26 @@ >> +# +246k bzImage >> + >> +# Basic socket support >> +CONFIG_NET=y >> +CONFIG_UNIX=y >> +CONFIG_NETWORK_FILESYSTEMS=y >> +CONFIG_NLATTR=y >> + >> +# INET TCP/IP >> +CONFIG_INET=y >> +CONFIG_TCP_CONG_CUBIC=y >> +CONFIG_DEFAULT_TCP_CONG="cubic" >> + >> +# Disable certain new defaults >> +# bzImage ~ -200k >> +# Using allnoconfig internally would eliminate the need for this >> +# CONFIG_XFRM is not set >> +# CONFIG_IPV6 is not set >> +# CONFIG_WIRELESS is not set >> +# CONFIG_IPCOMP_XFRM is not set >> +# IPSEC >> +# CONFIG_INET_XFRM_MODE_TRANSPORT is not set >> +# CONFIG_INET_XFRM_MODE_TUNNEL is not set >> +# CONFIG_INET_XFRM_MODE_BEET is not set >> +# >> +# CONFIG_INET_DIAG is not set >> diff --git a/meta/recipes-kernel/linux/linux-yocto-tiny/qemux86/defconfig >> b/meta/recipes-kernel/linux/linux-yocto-tiny/qemux86/defconfig >> new file mode 100644 >> index 0000000..ba9ae04 >> --- /dev/null >> +++ b/meta/recipes-kernel/linux/linux-yocto-tiny/qemux86/defconfig >> @@ -0,0 +1,613 @@ >> +# >> +# Automatically generated make config: don't edit >> +# Linux/i386 3.0.4 Kernel Configuration >> +# > > I can test this against the allnoconfig staging work, but so I'm clear, > you went for the approach of a defconfig baseline (generated from > allnoconfig?) and then re-enabling what you need/want ? Right, there is nothing interesting in the defconfig, it's just there to force a bunch of settings that the allnoconfig support will do once it's in place. <SNIP> > > I don't see anything missing in there, but I see some options as > enabled that surprised me (preempt none, ftrace (but these look > largley like HAVE_* options) or "hardware" options that we can > move to boards at some point. If the approach is what I mentioned > above, then this all looks sane. Correct. > >> diff --git a/meta/recipes-kernel/linux/linux-yocto-tiny/ramfs.cfg >> b/meta/recipes-kernel/linux/linux-yocto-tiny/ramfs.cfg >> new file mode 100644 >> index 0000000..96f4bd3 >> --- /dev/null >> +++ b/meta/recipes-kernel/linux/linux-yocto-tiny/ramfs.cfg >> @@ -0,0 +1,6 @@ >> +CONFIG_BLK_DEV=y >> +CONFIG_BLK_DEV_INITRD=y >> +CONFIG_BLK_DEV_RAM=y >> +CONFIG_BLK_DEV_RAM_COUNT=1 >> +CONFIG_BLK_DEV_RAM_SIZE=6144 >> + >> diff --git a/meta/recipes-kernel/linux/linux-yocto-tiny/rtc-pc.cfg >> b/meta/recipes-kernel/linux/linux-yocto-tiny/rtc-pc.cfg >> new file mode 100644 >> index 0000000..f667440 >> --- /dev/null >> +++ b/meta/recipes-kernel/linux/linux-yocto-tiny/rtc-pc.cfg >> @@ -0,0 +1,13 @@ >> +# Dependencies >> +CONFIG_ACPI=y >> +CONFIG_HPET=y >> +CONFIG_HPET_TIMER=y >> + >> +CONFIG_HPET_EMULATE_RTC=y >> +CONFIG_RTC_LIB=y >> +CONFIG_RTC_CLASS=y >> +CONFIG_RTC_HCTOSYS=y >> +CONFIG_RTC_HCTOSYS_DEVICE="rtc0" >> +CONFIG_RTC_INTF_PROC=y >> +CONFIG_RTC_INTF_DEV=y >> +CONFIG_RTC_DRV_CMOS=y >> diff --git a/meta/recipes-kernel/linux/linux-yocto-tiny/serial.cfg >> b/meta/recipes-kernel/linux/linux-yocto-tiny/serial.cfg >> new file mode 100644 >> index 0000000..0a28dca >> --- /dev/null >> +++ b/meta/recipes-kernel/linux/linux-yocto-tiny/serial.cfg >> @@ -0,0 +1,7 @@ >> +CONFIG_SERIAL_8250=y >> +CONFIG_SERIAL_8250_CONSOLE=y >> +CONFIG_SERIAL_8250_NR_UARTS=4 >> +CONFIG_SERIAL_8250_RUNTIME_UARTS=4 >> +# CONFIG_SERIAL_8250_EXTENDED is not set >> +CONFIG_SERIAL_CORE=y >> +CONFIG_SERIAL_CORE_CONSOLE=y >> diff --git a/meta/recipes-kernel/linux/linux-yocto-tiny/smp.cfg >> b/meta/recipes-kernel/linux/linux-yocto-tiny/smp.cfg >> new file mode 100644 >> index 0000000..a82096e >> --- /dev/null >> +++ b/meta/recipes-kernel/linux/linux-yocto-tiny/smp.cfg >> @@ -0,0 +1,7 @@ >> +# bzImage +104k >> +CONFIG_HOTPLUG=y >> +CONFIG_HOTPLUG_CPU=y >> +CONFIG_SMP=y >> +CONFIG_SCHED_SMT=y >> +CONFIG_SCHED_MC=y > > All looks sane. At some point, there could be more arch specific > items found here. > Thanks for the review Bruce. -- Darren Hart Intel Open Source Technology Center Yocto Project - Linux Kernel _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto
