initial buildroot for linux 5.15

board/beaglebone/genimage.cfg

@@ -0,0 +1,34 @@
+image boot.vfat {
+	vfat {
+		files = {
+			"MLO",
+			"u-boot.img",
+			"zImage",
+			"uEnv.txt",
+			"am335x-evm.dtb",
+			"am335x-evmsk.dtb",
+			"am335x-bone.dtb",
+			"am335x-boneblack.dtb",
+			"am335x-bonegreen.dtb",
+		}
+	}
+
+	size = 16M
+}
+
+image sdcard.img {
+	hdimage {
+	}
+
+	partition u-boot {
+		partition-type = 0xC
+		bootable = "true"
+		image = "boot.vfat"
+	}
+
+	partition rootfs {
+		partition-type = 0x83
+		image = "rootfs.ext4"
+		size = 512M
+	}
+}

board/beaglebone/linux-sgx.fragment

@@ -0,0 +1,13 @@
+CONFIG_PREEMPT=y
+CONFIG_PREEMPT_COUNT=y
+CONFIG_OMAP2_DSS_INIT=y
+CONFIG_OMAP_DSS_BASE=y
+CONFIG_OMAP2_DSS=y
+CONFIG_OMAP2_DSS_DPI=y
+CONFIG_DRM_OMAP=y
+CONFIG_DRM_OMAP_NUM_CRTCS=2
+CONFIG_DRM_OMAP_WB_M2M=y
+CONFIG_DRM_TILCDC=y
+CONFIG_DRM_I2C_NXP_TDA998X=y
+CONFIG_DRM=y
+CONFIG_DRM_LEGACY=y

board/beaglebone/patches/linux/0001-keep-jtag-clock-alive-for-debugger.patch

@@ -0,0 +1,16 @@
+This patch keeps the debugSS clock alive, it clocks the JTAG macro and enables
+access to the SoC via JTAG after the kernel booted.
+
+Signed-off-by: Lothar Felten <lothar.felten@gmail.com>
+---
+diff -Naur linux-orig/arch/arm/mach-omap2/omap_hwmod_33xx_data.c linux-52c4aa7cdb93d61f8008f380135beaf7b8fa6593/arch/arm/mach-omap2/omap_hwmod_33xx_data.c
+--- linux-orig/arch/arm/mach-omap2/omap_hwmod_33xx_data.c	2015-10-02 17:30:56.000000000 +0200
++++ linux-52c4aa7cdb93d61f8008f380135beaf7b8fa6593/arch/arm/mach-omap2/omap_hwmod_33xx_data.c	2016-08-15 11:28:55.017617612 +0200
+@@ -208,6 +208,7 @@
+ 	.name		= "debugss",
+ 	.class		= &am33xx_debugss_hwmod_class,
+ 	.clkdm_name	= "l3_aon_clkdm",
++	.flags		= (HWMOD_INIT_NO_IDLE|HWMOD_INIT_NO_RESET), /* keep debugSS clock alive for JTAG */
+ 	.main_clk	= "trace_clk_div_ck",
+ 	.prcm		= {
+ 		.omap4	= {

board/beaglebone/post-build.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+BOARD_DIR="$(dirname $0)"
+
+cp $BOARD_DIR/uEnv.txt $BINARIES_DIR/uEnv.txt

board/beaglebone/readme.txt

@@ -0,0 +1,62 @@
+CircuitCo BeagleBone
+Texas Instuments AM335x Evaluation Module (TMDXEVM3358)
+
+Description
+===========
+
+This configuration will build a complete image for the beaglebone and
+the TI AM335x-EVM, the board type is identified by the on-board
+EEPROM. The configuration is based on the
+ti-processor-sdk-06.01.00.08. Device tree blobs for beaglebone
+variants and the evm-sk are built too.
+
+For Qt5 support support use the beaglebone_qt5_defconfig.
+
+How to build it
+===============
+
+Select the default configuration for the target:
+$ make beaglebone_defconfig
+
+Optional: modify the configuration:
+$ make menuconfig
+
+Build:
+$ make
+
+Result of the build
+===================
+output/images/
++-- am335x-boneblack.dtb
++-- am335x-bone.dtb
++-- am335x-evm.dtb
++-- am335x-evmsk.dtb
++-- boot.vfat
++-- MLO
++-- rootfs.ext2
++-- rootfs.tar
++-- sdcard.img
++-- u-boot.img
++-- uEnv.txt
++-- zImage
+
+To copy the image file to the sdcard use dd:
+$ dd if=output/images/sdcard.img of=/dev/XXX
+
+
+Running Qt5 hellowindow opengl demo:
+===================
+# export QT_QPA_EGLFS_KMS_CONFIG=/etc/qt5/eglfs_kms_cfg.json
+# export QT_QPA_PLATFORM=eglfs
+# export QT_QPA_EGLFS_INTEGRATION=none
+# /usr/lib/qt/examples/opengl/hellowindow/hellowindow
+
+
+Tested hardware
+===============
+am335x-evm (rev. 1.1A)
+beagleboneblack (rev. A5A)
+beaglebone (rev. A6)
+
+2020, Adam Duskett <aduskett@gmail.com>
+2016, Lothar Felten <lothar.felten@gmail.com>

board/beaglebone/rootfs_overlay/etc/qt5/eglfs_kms_cfg.json

@@ -0,0 +1,15 @@
+{
+  "device": "/dev/dri/card0",
+  "hwcursor": false,
+  "pbuffers": true,
+  "outputs": [
+    {
+      "name": "VGA1",
+      "mode": "off"
+    },
+    {
+      "name": "HDMI1",
+      "mode": "1024x768"
+    }
+  ]
+}

board/beaglebone/uEnv.txt

@@ -0,0 +1,11 @@
+bootpart=0:1
+devtype=mmc
+bootdir=
+bootfile=zImage
+bootpartition=mmcblk0p2
+console=ttyS0,115200n8
+loadaddr=0x82000000
+fdtaddr=0x88000000
+set_mmc1=if test $board_name = A33515BB; then setenv bootpartition mmcblk1p2; fi
+set_bootargs=setenv bootargs console=${console} root=/dev/${bootpartition} rw rootfstype=ext4 rootwait
+uenvcmd=run set_mmc1; run set_bootargs;run loadimage;run loadfdt;printenv bootargs;bootz ${loadaddr} - ${fdtaddr}