[RFC v5 15/15] WIP: MIPS: ath79: add AR9331 devicetree defconfig

[Antony Pavlov <antonynpavlov@gmail.com>]

This commit adds defconfig file for AR9331 kernel
with device tree support.

The boards with u-boot_mod-like bootloader are supported:

  * TP-LINK MR3020;
  * Dragino 2;
  * Onion Omega;
  * DPTechnics DPT-Module.

Here is a small instruction:

1. download rootfs.mipsI.cpio image into your linux kernel
   source root dir.

    $ wget https://github.com/frantony/linux/raw/c95a5953e3dd96ad304de515f79acb555e0bc24e/rootfs.mipsI.cpio

2. you have to disable fw_getenv() function because
devicetree-enabled kernel will hangs if started
from u-boot_mod:

    > --- a/arch/mips/fw/lib/cmdline.c
    > +++ b/arch/mips/fw/lib/cmdline.c
    > @@ -51,6 +51,8 @@ char *fw_getenv(char *envname)
    >  {
    >         char *result = NULL;
    >
    > +       return result;
    > +

3. configure linux kernel and build vmlinux.bin linux kernel image

    $ make ARCH=mips ar9331-dt-raw_defconfig
    $ make ARCH=mips CROSS_COMPILE=<your cross compiler> vmlinux.bin

4. prepare vmlinux_dtb.bin image for your board

  4.1 for TP-LINK TL-MR3020

    $ make ARCH=mips qca/tl_mr3020.dtb
    $ cat arch/mips/boot/vmlinux.bin arch/mips/boot/dts/qca/tl_mr3020.dtb > vmlinux_dtb.bin

  4.2 for Dragino 2

    $ make ARCH=mips qca/dragino_ms14.dtb
    $ cat arch/mips/boot/vmlinux.bin arch/mips/boot/dts/qca/dragino_ms14.dtb > vmlinux_dtb.bin

  4.3 for Onion Omega

    $ make ARCH=mips qca/omega.dtb
    $ cat arch/mips/boot/vmlinux.bin arch/mips/boot/dts/qca/omega.dtb > vmlinux_dtb.bin

  4.4 DPTechnics DPT-Module

    $ make ARCH=mips qca/dpt_module.dtb
    $ cat arch/mips/boot/vmlinux.bin arch/mips/boot/dts/qca/dpt_module.dtb > vmlinux_dtb.bin

5. put the vmlinux_dtb.bin into the root directory of your tftp-server

6. connect to u-boot_mod console

7. use u-boot_mod to download vmlinux_dtb.bin into RAM of your board and run it:

   uboot> setenv serverip 192.168.1.2; setenv ipaddr 192.168.1.22
   uboot> tftpboot 0x80060000 vmlinux_dtb.bin; go 0x80060000

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: linux-mips@linux-mips.org
---
 arch/mips/configs/ar9331-dt-raw_defconfig | 100 ++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)

diff --git a/arch/mips/configs/ar9331-dt-raw_defconfig b/arch/mips/configs/ar9331-dt-raw_defconfig
new file mode 100644
index 0000000..5d81969
--- /dev/null
+++ b/arch/mips/configs/ar9331-dt-raw_defconfig
@@ -0,0 +1,100 @@
+CONFIG_ATH79=y
+CONFIG_ATH79_MACH_AP121=y
+CONFIG_HZ_100=y
+# CONFIG_SECCOMP is not set
+CONFIG_MIPS_RAW_APPENDED_DTB=y
+# CONFIG_LOCALVERSION_AUTO is not set
+CONFIG_SYSVIPC=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_BSD_PROCESS_ACCT_V3=y
+CONFIG_CGROUPS=y
+CONFIG_CGROUP_SCHED=y
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CPUSETS=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_CGROUP_DEBUG=y
+CONFIG_NAMESPACES=y
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_INITRAMFS_SOURCE="rootfs.mipsI.cpio"
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_EMBEDDED=y
+# CONFIG_VM_EVENT_COUNTERS is not set
+# CONFIG_SLUB_DEBUG is not set
+# CONFIG_COMPAT_BRK is not set
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_IOSCHED_CFQ is not set
+# CONFIG_SUSPEND is not set
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_INET=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_BOOTP=y
+CONFIG_IP_PNP_RARP=y
+# CONFIG_IPV6 is not set
+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+# CONFIG_FIRMWARE_IN_KERNEL is not set
+CONFIG_MTD=y
+CONFIG_MTD_BLOCK=y
+CONFIG_MTD_M25P80=y
+CONFIG_MTD_SPI_NOR=y
+CONFIG_SCSI=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_NETDEVICES=y
+# CONFIG_INPUT_MOUSEDEV is not set
+CONFIG_INPUT_EVDEV=y
+# CONFIG_KEYBOARD_ATKBD is not set
+CONFIG_KEYBOARD_GPIO=y
+CONFIG_KEYBOARD_GPIO_POLLED=y
+# CONFIG_INPUT_MOUSE is not set
+CONFIG_INPUT_MISC=y
+# CONFIG_SERIO is not set
+# CONFIG_VT is not set
+# CONFIG_LEGACY_PTYS is not set
+# CONFIG_DEVKMEM is not set
+CONFIG_SERIAL_AR933X=y
+CONFIG_SERIAL_AR933X_CONSOLE=y
+# CONFIG_HW_RANDOM is not set
+CONFIG_SPI=y
+CONFIG_SPI_ATH79=y
+CONFIG_GPIO_SYSFS=y
+# CONFIG_HWMON is not set
+CONFIG_USB=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_EHCI_ROOT_HUB_TT=y
+# CONFIG_USB_EHCI_ATH79 is not set
+CONFIG_USB_EHCI_HCD_PLATFORM=y
+CONFIG_USB_STORAGE=y
+CONFIG_NEW_LEDS=y
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_GPIO=y
+# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_PHY_SIMPLE_PDEV=y
+CONFIG_EXT3_FS=y
+CONFIG_EXT3_FS_POSIX_ACL=y
+CONFIG_EXT3_FS_SECURITY=y
+# CONFIG_DNOTIFY is not set
+CONFIG_VFAT_FS=y
+CONFIG_PROC_KCORE=y
+# CONFIG_PROC_PAGE_MONITOR is not set
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3_ACL=y
+CONFIG_NFS_V4=y
+CONFIG_ROOT_NFS=y
+# CONFIG_ENABLE_MUST_CHECK is not set
+CONFIG_STRIP_ASM_SYMS=y
+CONFIG_DEBUG_FS=y
+# CONFIG_SCHED_DEBUG is not set
+# CONFIG_FTRACE is not set
+CONFIG_CMDLINE_BOOL=y
+CONFIG_CMDLINE="init=/bin/sh machtype=DTB console=ttyATH0 root=/dev/ram"
+CONFIG_CMDLINE_OVERRIDE=y
+CONFIG_DEBUG_ZBOOT=y
+CONFIG_CRC_ITU_T=y
-- 
2.7.0