configs/engicam_px30_core_defconfig: new defconfig

Add initial support for Engicam PX30 SOM board
with below features:
- U-Boot 2024.01
- Linux 6.12.19
- Default packages from buildroot

px30 ctouch2 with 10 inches display

https://www.engicam.com/vis-prod/C-Touch-2-0-Carrier-Board/

Signed-off-by: Meena Murthy <meena.murthy@amarulasolutions.com>
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
[Julien:
 - fix linux-6.12.19 hash
 - add missing BR2_TARGET_UBOOT_NEEDS_GNUTLS=y
]
Signed-off-by: Julien Olivain <ju.o@free.fr>

board/engicam/px30core/extlinux.conf

@@ -0,0 +1,4 @@
+label Engicam-EDIMM linux
+  kernel /boot/Image
+  devicetree /boot/px30-engicam-px30-core-ctouch2-of10.dtb
+  append earlycon=uart8250,mmio32,0xff160000 root=/dev/mmcblk1p1 rootwait

board/engicam/px30core/genimage.cfg

@@ -0,0 +1,22 @@
+image sdcard.img {
+	hdimage {
+	}
+
+	partition u-boot-tpl-spl-dtb {
+		in-partition-table = "no"
+		image = "idbloader.img"
+		offset = 32K
+	}
+
+	partition u-boot-dtb {
+		in-partition-table = "no"
+		image = "u-boot.itb"
+		offset = 8M
+		size = 30M
+	}
+
+	partition rootfs {
+		partition-type = 0x83
+		image = "rootfs.ext4"
+	}
+}

board/engicam/px30core/patches/linux-headers/linux-headers.hash

@@ -0,0 +1 @@
+../linux/linux.hash

board/engicam/px30core/patches/linux/linux.hash

@@ -0,0 +1,2 @@
+# From https://www.kernel.org/pub/linux/kernel/v6.x/sha256sums.asc
+sha256  d73bf057bec04434b169d1b61641936f7d0c97ceb923a281f32e35dd4dcc6531  linux-6.12.19.tar.xz

board/engicam/px30core/patches/uboot/uboot.hash

@@ -0,0 +1,2 @@
+# Locally calculated
+sha256  b99611f1ed237bf3541bdc8434b68c96a6e05967061f992443cb30aabebef5b3  u-boot-2024.01.tar.bz2

board/engicam/px30core/post-build.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+BOARD_DIR="$(dirname "$0")"
+
+install -m 0644 -D "$BOARD_DIR"/extlinux.conf "$TARGET_DIR"/boot/extlinux/extlinux.conf

board/engicam/px30core/readme.txt

@@ -0,0 +1,60 @@
+ENGICAM PX30-EDIMM2.2 carrier board
+===================================
+
+Build:
+
+  $ make engicam_px30_core_defconfig
+  $ make
+
+Files created in output directory
+---------------------------------
+
+output/images
+
+├── bl31.elf
+├── idbloader.img
+├── Image
+├── px30-engicam-px30-core-ctouch2-of10.dtb
+├── rootfs.ext2
+├── rootfs.ext4 -> rootfs.ext2
+├── rootfs.tar
+├── sdcard.img
+├── u-boot.bin
+└── u-boot.itb
+
+How to connect the board and get started:
+-----------------------------------------
+Ensure that the power supply is stable and provides enough current to handle
+the board's needs, especially when peripherals are connected.
+
+Insert micro SD card on the board micro SD slot J17
+
+Creating bootable SD card:
+--------------------------
+sudo dd if=output/images/sdcard.img of=/dev/sdX && sync
+
+/dev/sdX is the path in host via which SD card is detected
+Where X is your SD card device
+
+Connect UART port on the board J26
+
+Serial console
+--------------
+Launch minicom at host with 1152008N1
+
+Power on the kit using J4
+
+Refer link on checking board booting
+
+Program eMMC
+------------
+Connect USB otg cable A-type to host pc, Micro USB end to board.
+
+Close Jumper JM5.
+
+Boot the Kit with SD boot.
+
+Program eMMC in U-Boot. (Refer link for the steps)
+
+Wiki link:
+https://wiki.amarulasolutions.com/bsp/rockchip/px30/engicam-px30-edimm2.2.html