L4Linux network and SD Access

29 Jun 2017


      Hi all,
I want to give L4Linux access to SD card, and ethernet driver. Initially I thought by run L4Linux kernel on top of L4re, drivers built with L4Linux kernel can just work. After trying and reading the email archive, seems like I need to configure the corresponding capability in cfg. I’m very new to L4re environment is there any tutorials or references that can help me understand it better? (I’m currently reading the manual, my development board is a beagle bone black)
Also I’m trying to build a L4Linux with MMC driver. My configuration is based on default arm_defconfig. I enabled
* Make Linux be a Server
* Bus driver for L4vbus
* L4shm based network driver
* MMC/SD/SDIO card support -> HW reset support for eMMC, MMC block device driver, Use bounce buffer for simple hosts, SDIO UART/GPS class support, Secure Digital Host Controller Interface Support, SDHCI platform and OF driver helper, MediaTek SD/MMC Card Interface support
* DOS/FAT/NT Filesystem -> MSDOS fs support, VFAT fs support
however, when it build the following errors show did I do something wrong?
LD      drivers/i2c/busses/built-in.o
  LD      drivers/i2c/muxes/built-in.o
  LD      drivers/i2c/built-in.o
  LD      drivers/idle/built-in.o
  CC      drivers/input/input.o
  CC      drivers/input/input-compat.o
  CC      drivers/input/input-mt.o
  CC      drivers/input/ff-core.o
  LD      drivers/input/input-core.o
  CC      drivers/input/mousedev.o
  CC      drivers/input/evdev.o
  LD      drivers/input/built-in.o
  LD      drivers/iommu/built-in.o
  CC      drivers/irqchip/irqchip.o
  LD      drivers/irqchip/built-in.o
  LD      drivers/leds/built-in.o
  LD      drivers/lguest/built-in.o
  LD      drivers/macintosh/built-in.o
  LD      drivers/media/common/b2c2/built-in.o
  LD      drivers/media/common/saa7146/built-in.o
  LD      drivers/media/common/siano/built-in.o
  LD      drivers/media/common/v4l2-tpg/built-in.o
  LD      drivers/media/common/built-in.o
  LD      drivers/media/firewire/built-in.o
  LD      drivers/media/i2c/soc_camera/built-in.o
  LD      drivers/media/i2c/built-in.o
  LD      drivers/media/mmc/siano/built-in.o
  LD      drivers/media/mmc/built-in.o
  LD      drivers/media/pci/b2c2/built-in.o
  LD      drivers/media/pci/ddbridge/built-in.o
  LD      drivers/media/pci/dm1105/built-in.o
  LD      drivers/media/pci/mantis/built-in.o
  LD      drivers/media/pci/netup_unidvb/built-in.o
  LD      drivers/media/pci/ngene/built-in.o
  LD      drivers/media/pci/pluto2/built-in.o
  LD      drivers/media/pci/pt1/built-in.o
  LD      drivers/media/pci/pt3/built-in.o
  LD      drivers/media/pci/saa7146/built-in.o
  LD      drivers/media/pci/smipcie/built-in.o
  LD      drivers/media/pci/ttpci/built-in.o
  LD      drivers/media/pci/built-in.o
  LD      drivers/media/platform/omap/built-in.o
  LD      drivers/media/platform/built-in.o
  LD      drivers/media/rc/keymaps/built-in.o
  LD      drivers/media/rc/built-in.o
  LD      drivers/media/tuners/built-in.o
  LD      drivers/media/usb/b2c2/built-in.o
  LD      drivers/media/usb/dvb-usb/built-in.o
  LD      drivers/media/usb/dvb-usb-v2/built-in.o
  LD      drivers/media/usb/s2255/built-in.o
  LD      drivers/media/usb/siano/built-in.o
  LD      drivers/media/usb/stkwebcam/built-in.o
  LD      drivers/media/usb/ttusb-budget/built-in.o
  LD      drivers/media/usb/ttusb-dec/built-in.o
  LD      drivers/media/usb/zr364xx/built-in.o
  LD      drivers/media/usb/built-in.o
  LD      drivers/media/built-in.o
  LD      drivers/mfd/built-in.o
  LD      drivers/misc/cb710/built-in.o
  LD      drivers/misc/eeprom/built-in.o
  LD      drivers/misc/lis3lv02d/built-in.o
  LD      drivers/misc/mic/bus/built-in.o
  LD      drivers/misc/mic/built-in.o
  LD      drivers/misc/ti-st/built-in.o
  LD      drivers/misc/built-in.o
  CC      drivers/mmc/card/block.o
  CC      drivers/mmc/card/queue.o
  LD      drivers/mmc/card/mmc_block.o
  CC      drivers/mmc/card/sdio_uart.o
  LD      drivers/mmc/card/built-in.o
  CC      drivers/mmc/core/core.o
  CC      drivers/mmc/core/bus.o
  CC      drivers/mmc/core/host.o
  CC      drivers/mmc/core/mmc.o
  CC      drivers/mmc/core/mmc_ops.o
  CC      drivers/mmc/core/sd.o
  CC      drivers/mmc/core/sd_ops.o
  CC      drivers/mmc/core/sdio.o
  CC      drivers/mmc/core/sdio_ops.o
  CC      drivers/mmc/core/sdio_bus.o
  CC      drivers/mmc/core/sdio_cis.o
  CC      drivers/mmc/core/sdio_io.o
  CC      drivers/mmc/core/sdio_irq.o
  CC      drivers/mmc/core/quirks.o
  CC      drivers/mmc/core/slot-gpio.o
  CC      drivers/mmc/core/pwrseq.o
  CC      drivers/mmc/core/debugfs.o
  LD      drivers/mmc/core/mmc_core.o
  CC      drivers/mmc/core/pwrseq_simple.o
  CC      drivers/mmc/core/pwrseq_emmc.o
  LD      drivers/mmc/core/built-in.o
  CC      drivers/mmc/host/sdhci.o
  CC      drivers/mmc/host/mtk-sd.o
  CC      drivers/mmc/host/sdhci-pltfm.o
  CC      drivers/mmc/host/sdhci-of-arasan.o
  CC      drivers/mmc/host/sdhci-of-at91.o
  LD      drivers/mmc/host/built-in.o
  LD      drivers/mmc/built-in.o
  CC      drivers/net/Space.o
  CC      drivers/net/loopback.o
  CC      drivers/net/l4shmnet.o
  LD      drivers/net/built-in.o
  LD      drivers/nfc/built-in.o
  LD      drivers/nvme/host/built-in.o
  LD      drivers/nvme/built-in.o
  CC      drivers/of/base.o
  CC      drivers/of/device.o
  CC      drivers/of/platform.o
  CC      drivers/of/fdt.o
  CC      drivers/of/fdt_address.o
  CC      drivers/of/address.o
  CC      drivers/of/irq.o
  CC      drivers/of/of_reserved_mem.o
  LD      drivers/of/built-in.o
  LD      drivers/platform/built-in.o
  LD      drivers/power/built-in.o
  LD      drivers/pwm/built-in.o
  CC      drivers/rtc/rtc-lib.o
  LD      drivers/rtc/built-in.o
  LD      drivers/soc/bcm/built-in.o
  LD      drivers/soc/fsl/built-in.o
  LD      drivers/soc/built-in.o
  CC      drivers/tty/tty_io.o
  CC      drivers/tty/n_tty.o
  CC      drivers/tty/tty_ioctl.o
  CC      drivers/tty/tty_ldisc.o
  CC      drivers/tty/tty_buffer.o
  CC      drivers/tty/tty_port.o
  CC      drivers/tty/tty_mutex.o
  CC      drivers/tty/tty_ldsem.o
  CC      drivers/tty/pty.o
  CC      drivers/tty/sysrq.o
  LD      drivers/tty/ipwireless/built-in.o
  CC      drivers/tty/serial/serial_core.o
  CC      drivers/tty/serial/l4ser.o
  CC      drivers/tty/serial/l4ser_shm.o
  LD      drivers/tty/serial/built-in.o
  CC      drivers/tty/vt/vt_ioctl.o
  CC      drivers/tty/vt/vc_screen.o
  CC      drivers/tty/vt/selection.o
  CC      drivers/tty/vt/keyboard.o
  CC      drivers/tty/vt/consolemap.o
  CC      drivers/tty/vt/consolemap_deftbl.o
  CC      drivers/tty/vt/vt.o
  CC      drivers/tty/vt/defkeymap.o
  LD      drivers/tty/vt/built-in.o
  LD      drivers/tty/built-in.o
  LD      drivers/video/backlight/built-in.o
  CC      drivers/video/console/dummycon.o
  CC      drivers/video/console/fbcon.o
  CC      drivers/video/console/bitblit.o
  CC      drivers/video/console/softcursor.o
  LD      drivers/video/console/built-in.o
  CC      drivers/video/fbdev/core/fb_cmdline.o
  CC      drivers/video/fbdev/core/fb_notify.o
  CC      drivers/video/fbdev/core/fbmem.o
  CC      drivers/video/fbdev/core/fbmon.o
  CC      drivers/video/fbdev/core/fbcmap.o
  CC      drivers/video/fbdev/core/fbsysfs.o
  CC      drivers/video/fbdev/core/modedb.o
  CC      drivers/video/fbdev/core/fbcvt.o
  LD      drivers/video/fbdev/core/fb.o
  LD      drivers/video/fbdev/core/built-in.o
  LD      drivers/video/fbdev/omap2/omapfb/displays/built-in.o
  LD      drivers/video/fbdev/omap2/omapfb/dss/built-in.o
  LD      drivers/video/fbdev/omap2/omapfb/built-in.o
  LD      drivers/video/fbdev/omap2/built-in.o
  LD      drivers/video/fbdev/built-in.o
  CC      drivers/video/logo/logo.o
  LOGO    drivers/video/logo/logo_linux_mono.c
  CC      drivers/video/logo/logo_linux_mono.o
  LOGO    drivers/video/logo/logo_linux_vga16.c
  CC      drivers/video/logo/logo_linux_vga16.o
  LOGO    drivers/video/logo/logo_linux_clut224.c
  CC      drivers/video/logo/logo_linux_clut224.o
  LD      drivers/video/logo/built-in.o
  LOGO    drivers/video/logo/logo_superh_mono.c
  LOGO    drivers/video/logo/clut_vga16.c
  LOGO    drivers/video/logo/logo_blackfin_vga16.c
  LOGO    drivers/video/logo/logo_superh_vga16.c
  LOGO    drivers/video/logo/logo_blackfin_clut224.c
  LOGO    drivers/video/logo/logo_dec_clut224.c
  LOGO    drivers/video/logo/logo_m32r_clut224.c
  LOGO    drivers/video/logo/logo_mac_clut224.c
  LOGO    drivers/video/logo/logo_parisc_clut224.c
  LOGO    drivers/video/logo/logo_sgi_clut224.c
  LOGO    drivers/video/logo/logo_spe_clut224.c
  LOGO    drivers/video/logo/logo_sun_clut224.c
  LOGO    drivers/video/logo/logo_superh_clut224.c
  LD      drivers/video/built-in.o
  LD      drivers/built-in.o
  LD      sound/built-in.o
  LD      firmware/built-in.o
  CC      arch/l4/drivers/vbus/l4vbus.o
  LD      arch/l4/drivers/vbus/built-in.o
  CC      arch/l4/drivers/events.o
  LD      arch/l4/drivers/built-in.o
  CC      net/socket.o
  LD      net/802/built-in.o
  CC      net/core/sock.o
  CC      net/core/request_sock.o
  CC      net/core/skbuff.o
  CC      net/core/datagram.o
  CC      net/core/stream.o
  CC      net/core/scm.o
  CC      net/core/gen_stats.o
  CC      net/core/gen_estimator.o
  CC      net/core/net_namespace.o
  CC      net/core/secure_seq.o
  CC      net/core/flow_dissector.o
  CC      net/core/sysctl_net_core.o
  CC      net/core/dev.o
  CC      net/core/ethtool.o
  CC      net/core/dev_addr_lists.o
  CC      net/core/dst.o
  CC      net/core/netevent.o
  CC      net/core/neighbour.o
  CC      net/core/rtnetlink.o
  CC      net/core/utils.o
  CC      net/core/link_watch.o
  CC      net/core/filter.o
  CC      net/core/sock_diag.o
  CC      net/core/dev_ioctl.o
  CC      net/core/tso.o
  CC      net/core/sock_reuseport.o
  CC      net/core/flow.o
  CC      net/core/net-sysfs.o
  CC      net/core/net-procfs.o
  LD      net/core/built-in.o
  CC      net/ethernet/eth.o
  LD      net/ethernet/built-in.o
  CC      net/ipv4/route.o
  CC      net/ipv4/inetpeer.o
  CC      net/ipv4/protocol.o
  CC      net/ipv4/ip_input.o
  CC      net/ipv4/ip_fragment.o
  CC      net/ipv4/ip_forward.o
  CC      net/ipv4/ip_options.o
  CC      net/ipv4/ip_output.o
  CC      net/ipv4/ip_sockglue.o
  CC      net/ipv4/inet_hashtables.o
  CC      net/ipv4/inet_timewait_sock.o
  CC      net/ipv4/inet_connection_sock.o
  CC      net/ipv4/tcp.o
  CC      net/ipv4/tcp_input.o
  CC      net/ipv4/tcp_output.o
  CC      net/ipv4/tcp_timer.o
  CC      net/ipv4/tcp_ipv4.o
  CC      net/ipv4/tcp_minisocks.o
  CC      net/ipv4/tcp_cong.o
  CC      net/ipv4/tcp_metrics.o
  CC      net/ipv4/tcp_fastopen.o
  CC      net/ipv4/tcp_recovery.o
  CC      net/ipv4/tcp_offload.o
  CC      net/ipv4/datagram.o
  CC      net/ipv4/raw.o
  CC      net/ipv4/udp.o
  CC      net/ipv4/udplite.o
  CC      net/ipv4/udp_offload.o
  CC      net/ipv4/arp.o
  CC      net/ipv4/icmp.o
  CC      net/ipv4/devinet.o
  CC      net/ipv4/af_inet.o
  CC      net/ipv4/igmp.o
  CC      net/ipv4/fib_frontend.o
  CC      net/ipv4/fib_semantics.o
  CC      net/ipv4/fib_trie.o
  CC      net/ipv4/inet_fragment.o
  CC      net/ipv4/ping.o
  CC      net/ipv4/ip_tunnel_core.o
  CC      net/ipv4/gre_offload.o
  CC      net/ipv4/sysctl_net_ipv4.o
  CC      net/ipv4/proc.o
  CC      net/ipv4/xfrm4_mode_beet.o
  CC      net/ipv4/xfrm4_mode_transport.o
  CC      net/ipv4/xfrm4_mode_tunnel.o
  CC      net/ipv4/ipconfig.o
  CC      net/ipv4/inet_diag.o
  CC      net/ipv4/tcp_diag.o
  CC      net/ipv4/tcp_cubic.o
  CC      net/ipv4/xfrm4_policy.o
  CC      net/ipv4/xfrm4_state.o
  CC      net/ipv4/xfrm4_input.o
  CC      net/ipv4/xfrm4_output.o
  CC      net/ipv4/xfrm4_protocol.o
  LD      net/ipv4/built-in.o
  CC      net/ipv6/addrconf_core.o
  CC      net/ipv6/exthdrs_core.o
  CC      net/ipv6/ip6_checksum.o
  CC      net/ipv6/ip6_icmp.o
  CC      net/ipv6/output_core.o
  CC      net/ipv6/protocol.o
  CC      net/ipv6/ip6_offload.o
  CC      net/ipv6/tcpv6_offload.o
  CC      net/ipv6/exthdrs_offload.o
  LD      net/ipv6/built-in.o
  CC      net/netlink/af_netlink.o
  CC      net/netlink/genetlink.o
  LD      net/netlink/built-in.o
  CC      net/packet/af_packet.o
  LD      net/packet/built-in.o
  CC      net/sched/sch_generic.o
  CC      net/sched/sch_mq.o
  LD      net/sched/built-in.o
  CC      net/unix/af_unix.o
  CC      net/unix/garbage.o
  CC      net/unix/sysctl_net_unix.o
  LD      net/unix/unix.o
  LD      net/unix/built-in.o
  CC      net/xfrm/xfrm_policy.o
  CC      net/xfrm/xfrm_state.o
  CC      net/xfrm/xfrm_hash.o
  CC      net/xfrm/xfrm_input.o
  CC      net/xfrm/xfrm_output.o
  CC      net/xfrm/xfrm_sysctl.o
  CC      net/xfrm/xfrm_replay.o
  LD      net/xfrm/built-in.o
  CC      net/sysctl_net.o
  LD      net/built-in.o
  CC      lib/lockref.o
  CC      lib/bcd.o
  CC      lib/div64.o
  CC      lib/sort.o
  CC      lib/parser.o
  CC      lib/halfmd4.o
  CC      lib/debug_locks.o
  CC      lib/random32.o
  CC      lib/bust_spinlocks.o
  CC      lib/kasprintf.o
  CC      lib/bitmap.o
  CC      lib/scatterlist.o
  CC      lib/gcd.o
  CC      lib/lcm.o
  CC      lib/list_sort.o
  CC      lib/uuid.o
  CC      lib/flex_array.o
  CC      lib/iov_iter.o
  CC      lib/clz_ctz.o
  CC      lib/bsearch.o
  CC      lib/find_bit.o
  CC      lib/llist.o
  CC      lib/memweight.o
  CC      lib/kfifo.o
  CC      lib/percpu-refcount.o
  CC      lib/percpu_ida.o
  CC      lib/rhashtable.o
  CC      lib/reciprocal_div.o
  CC      lib/once.o
  CC      lib/string_helpers.o
  CC      lib/hexdump.o
  CC      lib/kstrtox.o
  CC      lib/pci_iomap.o
  CC      lib/iomap_copy.o
  CC      lib/devres.o
  CC      lib/hweight.o
  CC      lib/bitrev.o
  CC      lib/crc16.o
  HOSTCC  lib/gen_crc32table
  GEN     lib/crc32table.h
  CC      lib/crc32.o
  CC      lib/genalloc.o
  CC      lib/fonts/fonts.o
  CC      lib/fonts/font_8x8.o
  CC      lib/fonts/font_8x16.o
  LD      lib/fonts/font.o
  LD      lib/fonts/built-in.o
  CC      lib/lz4/lz4_decompress.o
  LD      lib/lz4/built-in.o
  CC      lib/lzo/lzo1x_decompress_safe.o
  LD      lib/lzo/lzo_decompress.o
  LD      lib/lzo/built-in.o
  CC      lib/xz/xz_dec_syms.o
  CC      lib/xz/xz_dec_stream.o
  CC      lib/xz/xz_dec_lzma2.o
  CC      lib/xz/xz_dec_bcj.o
  LD      lib/xz/xz_dec.o
  LD      lib/xz/built-in.o
  CC      lib/zlib_inflate/inffast.o
  CC      lib/zlib_inflate/inflate.o
  CC      lib/zlib_inflate/infutil.o
  CC      lib/zlib_inflate/inftrees.o
  CC      lib/zlib_inflate/inflate_syms.o
  LD      lib/zlib_inflate/zlib_inflate.o
  LD      lib/zlib_inflate/built-in.o
  CC      lib/swiotlb.o
  CC      lib/iommu-helper.o
  CC      lib/iommu-common.o
  CC      lib/syscall.o
  CC      lib/nlattr.o
  CC      lib/dynamic_queue_limits.o
  CC      lib/net_utils.o
  LD      lib/built-in.o
  CC      lib/argv_split.o
  CC      lib/bug.o
  CC      lib/cmdline.o
  CC      lib/ctype.o
  CC      lib/dec_and_lock.o
  CC      lib/decompress.o
  CC      lib/decompress_bunzip2.o
  CC      lib/decompress_inflate.o
  CC      lib/decompress_unlz4.o
  CC      lib/decompress_unlzma.o
  CC      lib/decompress_unlzo.o
  CC      lib/decompress_unxz.o
  CC      lib/dma-noop.o
  CC      lib/dump_stack.o
  CC      lib/earlycpio.o
  CC      lib/extable.o
  CC      lib/fdt.o
  CC      lib/fdt_empty_tree.o
  CC      lib/fdt_ro.o
  CC      lib/fdt_rw.o
  CC      lib/fdt_strerror.o
  CC      lib/fdt_sw.o
  CC      lib/fdt_wip.o
  CC      lib/flex_proportions.o
  CC      lib/idr.o
  CC      lib/int_sqrt.o
  CC      lib/ioremap.o
  CC      lib/irq_regs.o
  CC      lib/is_single_threaded.o
  CC      lib/klist.o
  CC      lib/kobject.o
  CC      lib/kobject_uevent.o
  CC      lib/md5.o
  CC      lib/nmi_backtrace.o
  CC      lib/nodemask.o
  CC      lib/plist.o
  CC      lib/radix-tree.o
  CC      lib/ratelimit.o
  CC      lib/rbtree.o
  CC      lib/seq_buf.o
  CC      lib/sha1.o
  CC      lib/show_mem.o
  CC      lib/string.o
  CC      lib/timerqueue.o
  CC      lib/vsprintf.o
  AR      lib/lib.a
  CC      arch/l4/lib/arch-arm/../proc.o
  CC      arch/l4/lib/arch-arm/../debugfs.o
  LD      arch/l4/lib/arch-arm/built-in.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/ashldi3.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/ashrdi3.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/backtrace.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/bswapsdi2.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/call_with_stack.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/changebit.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/clearbit.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/copy_page.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/csumipv6.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/csumpartial.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/csumpartialcopy.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/delay-loop.o
  CC      arch/l4/lib/arch-arm/../../../arm/lib/delay.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/div64.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/findbit.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/io-readsb.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/io-readsl.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/io-readsw-armv4.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/io-writesb.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/io-writesl.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/io-writesw-armv4.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/lib1funcs.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/lshrdi3.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/memchr.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/memcpy.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/memmove.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/memset.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/memzero.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/muldi3.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/setbit.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/strchr.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/strrchr.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/testchangebit.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/testclearbit.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/testsetbit.o
  AS      arch/l4/lib/arch-arm/../../../arm/lib/ucmpdi2.o
  CC      arch/l4/lib/arch-arm/../csumpartialcopyuser.o
  CC      arch/l4/lib/arch-arm/../memcpy_user.o
  CC      arch/l4/lib/arch-arm/../pte.o
  CC      arch/l4/lib/arch-arm/../uaccess.o
  AR      arch/l4/lib/arch-arm/lib.a
  LD      arch/l4/l4lxlib/generic/built-in.o
  CC      arch/l4/l4lxlib/generic/irq_gen.o
  CC      arch/l4/l4lxlib/generic/legacy.o
  CC      arch/l4/l4lxlib/generic/thread_gen.o
  AR      arch/l4/l4lxlib/generic/lib.a
  LD      arch/l4/l4lxlib/l4env/built-in.o
  CC      arch/l4/l4lxlib/l4env/irq_vcpu.o
  CC      arch/l4/l4lxlib/l4env/memory.o
  CC      arch/l4/l4lxlib/l4env/misc.o
  CC      arch/l4/l4lxlib/l4env/task.o
  CC      arch/l4/l4lxlib/l4env/thread.o
  AR      arch/l4/l4lxlib/l4env/lib.a
  LD      virt/lib/built-in.o
  LD      virt/built-in.o
  LINK    vmlinux
  LD      vmlinux.o
  MODPOST vmlinux.o
  GEN     .version
  CHK     include/generated/compile.h
  UPD     include/generated/compile.h
  CC      init/version.o
  LD      init/built-in.o
drivers/built-in.o: In function `sdhci_at91_probe':
/home/daniel/Desktop/l4re-snapshot/src/l4linux/build-arm/../drivers/mmc/host/sdhci-of-at91.c:212: undefined reference to `clk_set_rate'
make[1]: *** [vmlinux] Error 1
make[1]: Leaving directory `/home/daniel/Desktop/l4re-snapshot/src/l4linux/build-arm'
make: *** [sub-make] Error 2

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L4Linux network and SD Access