mvebu: add support for Check Point V-81

mvebu: add support for Check Point V-81

Check Point V-80 (Quantum Spark 1590 Appliance) is an Appliance, based
on Armada 8040 (88F8040).

Specification:

- SoC             : Marvell Armada 8040 (88F8040)
- RAM             : DDR4 2 GiB (4x 512 MiB chip)
- Flash           : eMMC 4 GiB
- Ethernet        : 10x 10/100/1000 Mbps
  - LAN 1-8       : Marvell 88E6393X
  - WAN           : Marvell 88E1512
  - DMZ           : Marvell 88E1512 (RJ-45/SFP combo)
- LEDs/Keys (GPIO): 11x/1x
- UART            : "CONSOLE" port (USB 1.1 Type-C)
  - chip          : Silicon Labs CP2102N
  - port          : ttyS0
  - settings      : 115200bps 8n1
- HW Monitoring   : 2x nuvoTon NCT7802Y
- USB             : USB 3.0 Type-A
- Power           : 12 VDC, 3.3 A
  - plug          : DC Plug 2.5/5.5 mm (inner/outer)

Flash instruction (common):

1. Boot V-81 normally
2. Login to the vendor CLI (default: admin/admin) and login to the Linux
   CLI by `expert` command
3. Update U-Boot environment variables by the following commands

   fw_setenv bootcmd_ow_usb 'usb start; load usb 0:1 ${loadaddr} boot.scr && source ${loadaddr}'
   fw_setenv bootcmd_ow_sd 'load mmc 0:1 ${loadaddr} boot.scr && source ${loadaddr}'
   fw_setenv bootcmd_ow_emmc 'run set_mmc_internal; mmc read ${loadaddr} ${prim_header_mmc_blk} 4 && source ${loadaddr}'
   fw_setenv bootcmd 'run bootcmd_ow_usb; run bootcmd_ow_sd; run bootcmd_ow_emmc; run bootcmd_part${activePartition};'

   Attention: don't forget single quatations of values to prevent
              expansion of variables

4. Turn off the device

Flash instruction (USB-boot/SD-boot):

1. Extract and burn (squashfs|ext4)-sdcard.img.gz to USB storage or
   MicroSD card
2. Connect that storage to V-81
3. Turn on V-81 and it will be booted with OpenWrt in that USB storage

Flash instruction (eMMC-boot):

1. Copy initramfs image, dtb and bootsctipt to the USB storage with
   renaming

   initramfs.bin -------> Image
   dtb -----------------> armada-8040-v-81.dtb
   bootscript (.scr) ---> boot.scr

2. Connect that storage to the USB 3.0 port on V-81
3. Turn on V-81 and it will be booted with OpenWrt initramfs image in
   that USB storage
4. Upload (squashfs|ext4)-sysupgrade.gz to V-81
5. Perform sysupgrade with the uploaded image
6. Wait ~100 seconds to complete flashing

Reverting to stock firmware:

1. Turn on V-81 and interrupt booting by Ctrl + C
2. Select "4. Restore to Factory Defaults (local)"
3. Wait ~180 seconds to complete restoring and rebooting

Notes:

- The partition table in the internal eMMC has single partition, but
  "blkdevparts=" parameter will be passed from the bootloader and that
  definition will be used instead.

- The port-side LED pairs of RJ-45/SFP ports on V-81 are switched by a
  GPIO pin of pin7 on &cp0_gpio2. (High(1): RJ-45, Low(0): SFP)
  This needs to be switched manually.

- The MicroSD card slot is too unstable and the following messages are
  printed without "marvell,xenon-phy-slow-mode;" property.

  [   97.060851] mmc0: error -84 whilst initialising SD card
  [   97.137049] mmc0: error -84 whilst initialising SD card
  [   97.214315] mmc0: error -84 whilst initialising SD card
  ...

- There are no detailed information about maximum power consumption
  limit of the SFP port or optional DSL-SFP modules sold officially.
  But the power requirement of almost DSL-SFP modules are 3.3V/700mA, so
  set the maximum value of the SFP port to 2000 mW (Power Level III).

- Do not insert a MicroSD card before turning of the device when OpenWrt
  installation. The stock firmware deletes all files in the first
  partition automatically, to use it as a storage for logs.

MAC addresses:

LAN: 00:1C:7F:xx:xx:FA (mmcblk1boot0, ethaddr  (text))
WAN: 00:1C:7F:xx:xx:F9 (mmcblk1boot0, eth2addr (text))
DMZ: 00:1C:7F:xx:xx:FB (mmcblk1boot0, eth1addr (text))

Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/16904
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>