[U-Boot] [PATCH v11 4/4] doc: sifive-fu540: Update README to explicitly load DTB for Linux

[Anup Patel <Anup.Patel@wdc.com>]

We should explicitly load DTB from TFTP server or MMC/SD card
for Linux booting. This will allow us:
1. To use different Linux DTB for SiFive Unleashed board with
   expansion board connected.
2. Avoid re-flashing OpenSBI firmware whenever board connections
   change.

This patch updates reference bootlog in SiFive FU540 README
as-per above.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
---
 doc/README.sifive-fu540 | 317 ++++++++++++++++++++++++----------------
 1 file changed, 191 insertions(+), 126 deletions(-)

diff --git a/doc/README.sifive-fu540 b/doc/README.sifive-fu540
index 944ba1c8a0..a106c9206f 100644
--- a/doc/README.sifive-fu540
+++ b/doc/README.sifive-fu540
@@ -59,41 +59,64 @@ Once you plugin the sdcard and power up, you should see the U-Boot prompt.
 
 Sample boot log from HiFive Unleashed board
 ===========================================
-U-Boot 2019.07-rc4-00013-g1837f893b0 (Jun 20 2019 - 11:08:48 +0530)
+U-Boot 2019.07-00024-g350ff02f5b (Jul 22 2019 - 11:45:02 +0530)
 
 CPU:   rv64imafdc
 Model: SiFive HiFive Unleashed A00
 DRAM:  8 GiB
+MMC:   spi at 10050000:mmc at 0: 0
 In:    serial at 10010000
 Out:   serial at 10010000
 Err:   serial at 10010000
 Net:   eth0: ethernet at 10090000
 Hit any key to stop autoboot:  0
 => version
-U-Boot 2019.07-rc4-00013-g1837f893b0 (Jun 20 2019 - 11:08:48 +0530)
+U-Boot 2019.07-00024-g350ff02f5b (Jul 22 2019 - 11:45:02 +0530)
 
 riscv64-linux-gcc.br_real (Buildroot 2018.11-rc2-00003-ga0787e9) 8.2.0
 GNU ld (GNU Binutils) 2.31.1
-=>
-===============================================================================
+=> mmc info
+Device: spi at 10050000:mmc at 0
+Manufacturer ID: 3
+OEM: 5344
+Name: SU08G
+Bus Speed: 20000000
+Mode: SD Legacy
+Rd Block Len: 512
+SD version 2.0
+High Capacity: Yes
+Capacity: 7.4 GiB
+Bus Width: 1-bit
+Erase Group Size: 512 Bytes
+=> mmc part
 
-Now you can configure your networking, tftp server and use tftp boot method to
-load uImage.
+Partition Map for MMC device 0  --   Partition Type: EFI
 
-==========================================================================
-=> setenv ipaddr 10.206.5.241
+Part    Start LBA       End LBA         Name
+        Attributes
+        Type GUID
+        Partition GUID
+  1     0x00000800      0x000107ff      "bootloader"
+        attrs:  0x0000000000000000
+        type:   2e54b353-1271-4842-806f-e436d6af6985
+        guid:   393bbd36-7111-491c-9869-ce24008f6403
+  2     0x00040800      0x00ecdfde      ""
+        attrs:  0x0000000000000000
+        type:   0fc63daf-8483-4772-8e79-3d69d8477de4
+        guid:   7fc9a949-5480-48c7-b623-04923080757f
+=> setenv ipaddr 10.206.7.133
 => setenv netmask 255.255.252.0
 => setenv serverip 10.206.4.143
 => setenv gateway 10.206.4.1
-=> tftpboot ${kernel_addr_r} /sifive/fu540/uImage
+=> tftpboot ${kernel_addr_r} /sifive/fu540/Image
 ethernet at 10090000: PHY present at 0
 ethernet at 10090000: Starting autonegotiation...
 ethernet at 10090000: Autonegotiation complete
-ethernet at 10090000: link up, 1000Mbps full-duplex (lpa: 0x7c00)
+ethernet at 10090000: link up, 1000Mbps full-duplex (lpa: 0x3c00)
 Using ethernet at 10090000 device
-TFTP from server 10.206.4.143; our IP address is 10.206.5.241
-Filename '/sifive/fu540/uImage'.
-Load address: 0x80600000
+TFTP from server 10.206.4.143; our IP address is 10.206.7.133
+Filename '/sifive/fu540/Image'.
+Load address: 0x84000000
 Loading: #################################################################
          #################################################################
          #################################################################
@@ -103,50 +126,77 @@ Loading: #################################################################
          #################################################################
          #################################################################
          #################################################################
-         ########################################
-         1.5 MiB/s
+         #################################################################
+         #################################################################
+         #################################################################
+         #################################################################
+         #################################################################
+         #################################################################
+         #################################################################
+         #################################################################
+         #################################################################
+         #################################################################
+         #################################################################
+         #################################################################
+         #################################################################
+         #################################################################
+         #################################################################
+         #################################################################
+         #################################################################
+         ##########################################
+         1.2 MiB/s
 done
-Bytes transferred = 9162364 (8bce7c hex)
+Bytes transferred = 8867100 (874d1c hex)
 => tftpboot ${ramdisk_addr_r} /sifive/fu540/uRamdisk
 ethernet at 10090000: PHY present at 0
 ethernet at 10090000: Starting autonegotiation...
 ethernet at 10090000: Autonegotiation complete
-ethernet at 10090000: link up, 1000Mbps full-duplex (lpa: 0x7c00)
+ethernet at 10090000: link up, 1000Mbps full-duplex (lpa: 0x3c00)
 Using ethernet at 10090000 device
-TFTP from server 10.206.4.143; our IP address is 10.206.5.241
+TFTP from server 10.206.4.143; our IP address is 10.206.7.133
 Filename '/sifive/fu540/uRamdisk'.
-Load address: 0x82500000
+Load address: 0x88300000
 Loading: #################################################################
          #################################################################
-         ##################################
-         448.2 KiB/s
+         #################################################################
+         #################################################################
+         #################################################################
+         #################################################################
+         #################################################################
+         ##############
+         418.9 KiB/s
 done
 Bytes transferred = 2398272 (249840 hex)
-=> setenv bootargs "root=/dev/ram rw console=ttySIF0 earlycon=sbi"
-=> bootm ${kernel_addr_r} ${ramdisk_addr_r} ${fdtcontroladdr}
-## Booting kernel from Legacy Image at 80600000 ...
-   Image Name:   Linux
-   Image Type:   RISC-V Linux Kernel Image (uncompressed)
-   Data Size:    9162300 Bytes = 8.7 MiB
-   Load Address: 80200000
-   Entry Point:  80200000
-   Verifying Checksum ... OK
-## Loading init Ramdisk from Legacy Image at 82500000 ...
+=> tftpboot ${fdt_addr_r} /sifive/fu540/hifive-unleashed-a00.dtb
+ethernet at 10090000: PHY present at 0
+ethernet at 10090000: Starting autonegotiation...
+ethernet at 10090000: Autonegotiation complete
+ethernet at 10090000: link up, 1000Mbps full-duplex (lpa: 0x7c00)
+Using ethernet at 10090000 device
+TFTP from server 10.206.4.143; our IP address is 10.206.7.133
+Filename '/sifive/fu540/hifive-unleashed-a00.dtb'.
+Load address: 0x88000000
+Loading: ##
+         1000 Bytes/s
+done
+Bytes transferred = 5614 (15ee hex)
+=> setenv bootargs "root=/dev/ram rw console=ttySIF0 ip=dhcp earlycon=sbi"
+=> booti ${kernel_addr_r} ${ramdisk_addr_r} ${fdt_addr_r}
+## Loading init Ramdisk from Legacy Image at 88300000 ...
    Image Name:   Linux RootFS
    Image Type:   RISC-V Linux RAMDisk Image (uncompressed)
    Data Size:    2398208 Bytes = 2.3 MiB
    Load Address: 00000000
    Entry Point:  00000000
    Verifying Checksum ... OK
-## Flattened Device Tree blob at ff795730
-   Booting using the fdt blob at 0xff795730
-   Loading Kernel Image ... OK
-   Using Device Tree in place at 00000000ff795730, end 00000000ff799dac
+## Flattened Device Tree blob at 88000000
+   Booting using the fdt blob at 0x88000000
+   Using Device Tree in place at 0000000088000000, end 00000000880045ed
 
 Starting kernel ...
 
 [    0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80200000
-[    0.000000] Linux version 5.2.0-rc1-00003-gb9543e66e700 (anup at anup-lab-machine) (gcc version 8.2.0 (Buildroot 2018.11-rc2-00003-ga0787e9)) #1 SMP Thu Jun 20 11:41:26 IST 2019
+[    0.000000] Linux version 5.3.0-rc1-00003-g460ac558152f (anup at anup-lab-machine) (gcc version 8.2.0 (Buildroot 2018.11-rc2-00003-ga0787e9)) #6 SMP Mon Jul 22 10:01:01 IST 2019
 [    0.000000] earlycon: sbi0 at I/O port 0x0 (options '')
 [    0.000000] printk: bootconsole [sbi0] enabled
 [    0.000000] Initial ramdisk at: 0x(____ptrval____) (2398208 bytes)
@@ -157,17 +207,18 @@ Starting kernel ...
 [    0.000000] Early memory node ranges
 [    0.000000]   node   0: [mem 0x0000000080200000-0x000000027fffffff]
 [    0.000000] Initmem setup node 0 [mem 0x0000000080200000-0x000000027fffffff]
-[    0.000000] software IO TLB: mapped [mem 0xfb795000-0xff795000] (64MB)
+[    0.000000] software IO TLB: mapped [mem 0xfbfff000-0xfffff000] (64MB)
 [    0.000000] CPU with hartid=0 is not available
 [    0.000000] CPU with hartid=0 is not available
 [    0.000000] elf_hwcap is 0x112d
-[    0.000000] percpu: Embedded 17 pages/cpu s29592 r8192 d31848 u69632
+[    0.000000] percpu: Embedded 18 pages/cpu s34584 r8192 d30952 u73728
 [    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 2067975
-[    0.000000] Kernel command line: root=/dev/ram rw console=ttySIF0 earlycon=sbi
-[    0.000000] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes)
-[    0.000000] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes)
+[    0.000000] Kernel command line: root=/dev/ram rw console=ttySIF0 ip=dhcp earlycon=sbi
+[    0.000000] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, linear)
+[    0.000000] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, linear)
 [    0.000000] Sorting __ex_table...
-[    0.000000] Memory: 8182056K/8386560K available (5753K kernel code, 357K rwdata, 1804K rodata, 204K init, 808K bss, 204504K reserved, 0K cma-reserved)
+[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
+[    0.000000] Memory: 8182308K/8386560K available (5916K kernel code, 368K rwdata, 1840K rodata, 213K init, 304K bss, 204252K reserved, 0K cma-reserved)
 [    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
 [    0.000000] rcu: Hierarchical RCU implementation.
 [    0.000000] rcu:     RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=4.
@@ -175,91 +226,105 @@ Starting kernel ...
 [    0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
 [    0.000000] NR_IRQS: 0, nr_irqs: 0, preallocated irqs: 0
 [    0.000000] plic: mapped 53 interrupts with 4 handlers for 9 contexts.
-[    0.000000] riscv_timer_init_dt: Registering clocksource cpuid [0] hartid [2]
+[    0.000000] riscv_timer_init_dt: Registering clocksource cpuid [0] hartid [1]
 [    0.000000] clocksource: riscv_clocksource: mask: 0xffffffffffffffff max_cycles: 0x1d854df40, max_idle_ns: 3526361616960 ns
-[    0.000007] sched_clock: 64 bits at 1000kHz, resolution 1000ns, wraps every 2199023255500ns
-[    0.008553] Console: colour dummy device 80x25
-[    0.012990] Calibrating delay loop (skipped), value calculated using timer frequency.. 2.00 BogoMIPS (lpj=4000)
-[    0.023103] pid_max: default: 32768 minimum: 301
-[    0.028269] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes)
-[    0.035068] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes)
-[    0.042770] *** VALIDATE proc ***
-[    0.045610] *** VALIDATE cgroup1 ***
-[    0.049157] *** VALIDATE cgroup2 ***
-[    0.053743] rcu: Hierarchical SRCU implementation.
-[    0.058297] smp: Bringing up secondary CPUs ...
-[    0.064134] smp: Brought up 1 node, 4 CPUs
-[    0.069114] devtmpfs: initialized
-[    0.073281] random: get_random_u32 called from bucket_table_alloc.isra.10+0x4e/0x160 with crng_init=0
-[    0.082157] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
-[    0.091634] futex hash table entries: 1024 (order: 4, 65536 bytes)
-[    0.098480] NET: Registered protocol family 16
-[    0.114101] vgaarb: loaded
-[    0.116397] SCSI subsystem initialized
-[    0.120358] usbcore: registered new interface driver usbfs
-[    0.125541] usbcore: registered new interface driver hub
-[    0.130936] usbcore: registered new device driver usb
-[    0.136618] clocksource: Switched to clocksource riscv_clocksource
-[    0.148108] NET: Registered protocol family 2
-[    0.152358] tcp_listen_portaddr_hash hash table entries: 4096 (order: 4, 65536 bytes)
-[    0.159928] TCP established hash table entries: 65536 (order: 7, 524288 bytes)
-[    0.169027] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
-[    0.178360] TCP: Hash tables configured (established 65536 bind 65536)
-[    0.184653] UDP hash table entries: 4096 (order: 5, 131072 bytes)
-[    0.190819] UDP-Lite hash table entries: 4096 (order: 5, 131072 bytes)
-[    0.197618] NET: Registered protocol family 1
-[    0.201892] RPC: Registered named UNIX socket transport module.
-[    0.207395] RPC: Registered udp transport module.
-[    0.212159] RPC: Registered tcp transport module.
-[    0.216940] RPC: Registered tcp NFSv4.1 backchannel transport module.
-[    0.223445] PCI: CLS 0 bytes, default 64
-[    0.227726] Unpacking initramfs...
-[    0.260556] Freeing initrd memory: 2336K
-[    0.264652] workingset: timestamp_bits=62 max_order=21 bucket_order=0
-[    0.278452] NFS: Registering the id_resolver key type
-[    0.282841] Key type id_resolver registered
-[    0.287067] Key type id_legacy registered
-[    0.291155] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
-[    0.298299] NET: Registered protocol family 38
-[    0.302470] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
-[    0.309906] io scheduler mq-deadline registered
-[    0.314501] io scheduler kyber registered
-[    0.354134] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
-[    0.360725] 10010000.serial: ttySIF0 at MMIO 0x10010000 (irq = 4, base_baud = 0) is a SiFive UART v0
-[    0.369191] printk: console [ttySIF0] enabled
-[    0.369191] printk: console [ttySIF0] enabled
-[    0.377938] printk: bootconsole [sbi0] disabled
-[    0.377938] printk: bootconsole [sbi0] disabled
-[    0.387298] 10011000.serial: ttySIF1 at MMIO 0x10011000 (irq = 1, base_baud = 0) is a SiFive UART v0
-[    0.396411] [drm] radeon kernel modesetting enabled.
-[    0.409818] loop: module loaded
-[    0.412606] libphy: Fixed MDIO Bus: probed
-[    0.416870] macb 10090000.ethernet: Registered clk switch 'sifive-gemgxl-mgmt'
-[    0.423570] macb: GEM doesn't support hardware ptp.
-[    0.428469] libphy: MACB_mii_bus: probed
-[    1.053009] Microsemi VSC8541 SyncE 10090000.ethernet-ffffffff:00: attached PHY driver [Microsemi VSC8541 SyncE] (mii_bus:phy_addr=10090000.ethernet-ffffffff:00, irq=POLL)
-[    1.067548] macb 10090000.ethernet eth0: Cadence GEM rev 0x10070109 at 0x10090000 irq 7 (70:b3:d5:92:f2:f3)
-[    1.077330] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
-[    1.083069] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
-[    1.089061] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
-[    1.095485] ehci-pci: EHCI PCI platform driver
-[    1.099947] ehci-platform: EHCI generic platform driver
-[    1.105196] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
-[    1.111286] ohci-pci: OHCI PCI platform driver
-[    1.115742] ohci-platform: OHCI generic platform driver
-[    1.121142] usbcore: registered new interface driver uas
-[    1.126269] usbcore: registered new interface driver usb-storage
-[    1.132331] mousedev: PS/2 mouse device common for all mice
-[    1.137978] usbcore: registered new interface driver usbhid
-[    1.143325] usbhid: USB HID core driver
-[    1.148022] NET: Registered protocol family 10
-[    1.152609] Segment Routing with IPv6
-[    1.155571] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
-[    1.161927] NET: Registered protocol family 17
-[    1.165907] Key type dns_resolver registered
-[    1.171694] Freeing unused kernel memory: 204K
-[    1.175375] This architecture does not have kernel memory protection.
-[    1.181792] Run /init as init process
+[    0.000006] sched_clock: 64 bits at 1000kHz, resolution 1000ns, wraps every 2199023255500ns
+[    0.008559] Console: colour dummy device 80x25
+[    0.012989] Calibrating delay loop (skipped), value calculated using timer frequency.. 2.00 BogoMIPS (lpj=4000)
+[    0.023104] pid_max: default: 32768 minimum: 301
+[    0.028273] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, linear)
+[    0.035765] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, linear)
+[    0.045307] rcu: Hierarchical SRCU implementation.
+[    0.049875] smp: Bringing up secondary CPUs ...
+[    0.055729] smp: Brought up 1 node, 4 CPUs
+[    0.060599] devtmpfs: initialized
+[    0.064819] random: get_random_u32 called from bucket_table_alloc.isra.10+0x4e/0x160 with crng_init=0
+[    0.073720] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
+[    0.083176] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
+[    0.090721] NET: Registered protocol family 16
+[    0.106319] vgaarb: loaded
+[    0.108670] SCSI subsystem initialized
+[    0.112515] usbcore: registered new interface driver usbfs
+[    0.117758] usbcore: registered new interface driver hub
+[    0.123167] usbcore: registered new device driver usb
+[    0.128905] clocksource: Switched to clocksource riscv_clocksource
+[    0.141239] NET: Registered protocol family 2
+[    0.145506] tcp_listen_portaddr_hash hash table entries: 4096 (order: 4, 65536 bytes, linear)
+[    0.153754] TCP established hash table entries: 65536 (order: 7, 524288 bytes, linear)
+[    0.163466] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes, linear)
+[    0.173468] TCP: Hash tables configured (established 65536 bind 65536)
+[    0.179739] UDP hash table entries: 4096 (order: 5, 131072 bytes, linear)
+[    0.186627] UDP-Lite hash table entries: 4096 (order: 5, 131072 bytes, linear)
+[    0.194117] NET: Registered protocol family 1
+[    0.198417] RPC: Registered named UNIX socket transport module.
+[    0.203887] RPC: Registered udp transport module.
+[    0.208664] RPC: Registered tcp transport module.
+[    0.213429] RPC: Registered tcp NFSv4.1 backchannel transport module.
+[    0.219944] PCI: CLS 0 bytes, default 64
+[    0.224170] Unpacking initramfs...
+[    0.262347] Freeing initrd memory: 2336K
+[    0.266531] workingset: timestamp_bits=62 max_order=21 bucket_order=0
+[    0.280406] NFS: Registering the id_resolver key type
+[    0.284798] Key type id_resolver registered
+[    0.289048] Key type id_legacy registered
+[    0.293114] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
+[    0.300262] NET: Registered protocol family 38
+[    0.304432] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
+[    0.311862] io scheduler mq-deadline registered
+[    0.316461] io scheduler kyber registered
+[    0.356421] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
+[    0.363004] 10010000.serial: ttySIF0 at MMIO 0x10010000 (irq = 4, base_baud = 0) is a SiFive UART v0
+[    0.371468] printk: console [ttySIF0] enabled
+[    0.371468] printk: console [ttySIF0] enabled
+[    0.380223] printk: bootconsole [sbi0] disabled
+[    0.380223] printk: bootconsole [sbi0] disabled
+[    0.389589] 10011000.serial: ttySIF1 at MMIO 0x10011000 (irq = 1, base_baud = 0) is a SiFive UART v0
+[    0.398680] [drm] radeon kernel modesetting enabled.
+[    0.412395] loop: module loaded
+[    0.415214] sifive_spi 10040000.spi: mapped; irq=3, cs=1
+[    0.420628] sifive_spi 10050000.spi: mapped; irq=5, cs=1
+[    0.425897] libphy: Fixed MDIO Bus: probed
+[    0.429964] macb 10090000.ethernet: Registered clk switch 'sifive-gemgxl-mgmt'
+[    0.436743] macb: GEM doesn't support hardware ptp.
+[    0.441621] libphy: MACB_mii_bus: probed
+[    0.601316] Microsemi VSC8541 SyncE 10090000.ethernet-ffffffff:00: attached PHY driver [Microsemi VSC8541 SyncE] (mii_bus:phy_addr=10090000.ethernet-ffffffff:00, irq=POLL)
+[    0.615857] macb 10090000.ethernet eth0: Cadence GEM rev 0x10070109 at 0x10090000 irq 6 (70:b3:d5:92:f2:f3)
+[    0.625634] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
+[    0.631381] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
+[    0.637382] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
+[    0.643799] ehci-pci: EHCI PCI platform driver
+[    0.648261] ehci-platform: EHCI generic platform driver
+[    0.653497] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
+[    0.659599] ohci-pci: OHCI PCI platform driver
+[    0.664055] ohci-platform: OHCI generic platform driver
+[    0.669448] usbcore: registered new interface driver uas
+[    0.674575] usbcore: registered new interface driver usb-storage
+[    0.680642] mousedev: PS/2 mouse device common for all mice
+[    0.709493] mmc_spi spi1.0: SD/MMC host mmc0, no DMA, no WP, no poweroff, cd polling
+[    0.716615] usbcore: registered new interface driver usbhid
+[    0.722023] usbhid: USB HID core driver
+[    0.726738] NET: Registered protocol family 10
+[    0.731359] Segment Routing with IPv6
+[    0.734332] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
+[    0.740687] NET: Registered protocol family 17
+[    0.744660] Key type dns_resolver registered
+[    0.806775] mmc0: host does not support reading read-only switch, assuming write-enable
+[    0.814020] mmc0: new SDHC card on SPI
+[    0.820137] mmcblk0: mmc0:0000 SU08G 7.40 GiB
+[    0.850220]  mmcblk0: p1 p2
+[    3.821524] macb 10090000.ethernet eth0: link up (1000/Full)
+[    3.828938] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
+[    3.848919] Sending DHCP requests .., OK
+[    6.252076] IP-Config: Got DHCP answer from 10.206.4.1, my address is 10.206.7.133
+[    6.259624] IP-Config: Complete:
+[    6.262831]      device=eth0, hwaddr=70:b3:d5:92:f2:f3, ipaddr=10.206.7.133, mask=255.255.252.0, gw=10.206.4.1
+[    6.272809]      host=dhcp-10-206-7-133, domain=sdcorp.global.sandisk.com, nis-domain=(none)
+[    6.281228]      bootserver=10.206.126.11, rootserver=10.206.126.11, rootpath=
+[    6.281232]      nameserver0=10.86.1.1, nameserver1=10.86.2.1
+[    6.294179]      ntpserver0=10.86.1.1, ntpserver1=10.86.2.1
+[    6.301026] Freeing unused kernel memory: 212K
+[    6.304683] This architecture does not have kernel memory protection.
+[    6.311121] Run /init as init process
            _  _
           | ||_|
           | | _ ____  _   _  _  _
-- 
2.17.1