[RFC 4/4] WIP: MIPS: add tl-mr3020-dt-raw_defconfig

[Antony Pavlov <antonynpavlov@xxxxxxxxx>]

The tl-mr3020-dt-raw_defconfig conf file is used
to demonstrate devicetree-enabled linux kernel
runs on TP-LINK MR3020 board with u-boot_mod bootloader.

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;
    > +

2. compile vmlinux.bin kernel image, e.g.

    $ make ARCH=mips tl-mr3020-dt-raw_defconfig
    $ make ARCH=mips CROSS_COMPILE=<your cross compiler> vmlinux.bin

3. put the vmlinux.bin to root directory of your tftp-server

4. connect to u-boot_mod console

5. download vmlinux.bin into RAM and run it:

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

Signed-off-by: Antony Pavlov <antonynpavlov@xxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
---
 arch/mips/configs/tl-mr3020-dt-raw_defconfig | 85 ++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)

diff --git a/arch/mips/configs/tl-mr3020-dt-raw_defconfig b/arch/mips/configs/tl-mr3020-dt-raw_defconfig
new file mode 100644
index 0000000..00cf775
--- /dev/null
+++ b/arch/mips/configs/tl-mr3020-dt-raw_defconfig
@@ -0,0 +1,85 @@
+CONFIG_ATH79=y
+CONFIG_DTB_TL_MR3020=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_DEBUG=y
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CPUSETS=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_CGROUP_SCHED=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_NETDEVICES=y
+# CONFIG_INPUT_MOUSEDEV is not set
+# CONFIG_INPUT_KEYBOARD is not set
+# 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_HID is not set
+# CONFIG_USB_SUPPORT is not set
+CONFIG_NEW_LEDS=y
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_GPIO=y
+# CONFIG_IOMMU_SUPPORT is not set
+# CONFIG_DNOTIFY is not set
+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_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
-- 
2.6.2