From 4c671ef548e2b7f352be184215306766ebc1cc45 Mon Sep 17 00:00:00 2001
From: Leonard Crestez <leonard.crestez@nxp.com>
Date: Wed, 29 Nov 2017 14:56:54 +0200
Subject: [PATCH] imx8qm_arm2: Add xen boot commands

These commands try to be as generic as possible and avoid duplicating
argument values used for regular boot.

The fdt_file parameter still needs to be set to a .dtb for dom0. Booting
xen with stock dtb would require more hacks, for example lpuart
interrupt-parent = <&wu> needs to be removed.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
---
 include/configs/imx8qm_arm2.h | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/include/configs/imx8qm_arm2.h b/include/configs/imx8qm_arm2.h
index 827cc3c1e5..d679c73677 100644
--- a/include/configs/imx8qm_arm2.h
+++ b/include/configs/imx8qm_arm2.h
@@ -126,9 +126,38 @@
 	"initrd_high=0xffffffff\0" \
 	"bootcmd_mfg=run mfgtool_args;booti ${loadaddr} ${initrd_addr} ${fdt_addr};\0" \
 
+#define XEN_BOOT_ENV \
+            "xenhyper_bootargs=console=dtuart dtuart=/serial@5a060000 dom0_mem=1024M\0" \
+            "xenlinux_bootargs=clk_ignore_unused\0" \
+            "xenlinux_console=hvc0 earlycon=xen\0" \
+            "xenboot_common=" \
+                "${get_cmd} ${loadaddr} xen;" \
+                "${get_cmd} ${fdt_addr} ${fdt_file};" \
+                "${get_cmd} ${initrd_addr} ${image};" \
+                "fdt addr ${fdt_addr};" \
+                "fdt resize 256;" \
+                "fdt set /chosen/module@0 reg <0x00000000 ${initrd_addr} 0x00000000 0x${filesize}>; " \
+                "fdt set /chosen/module@0 bootargs \"${bootargs} ${xenlinux_bootargs}\"; " \
+                "setenv bootargs ${xenhyper_bootargs};" \
+                "booti ${loadaddr} - ${fdt_addr};" \
+            "\0" \
+            "xennetboot=" \
+                "setenv get_cmd dhcp;" \
+                "setenv console ${xenlinux_console};" \
+                "run netargs;" \
+                "run xenboot_common;" \
+            "\0" \
+            "xenmmcboot=" \
+                "setenv get_cmd \"fatload mmc ${mmcdev}:${mmcpart}\";" \
+                "setenv console ${xenlinux_console};" \
+                "run mmcargs;" \
+                "run xenboot_common;" \
+            "\0" \
+
 /* Initial environment variables */
 #define CONFIG_EXTRA_ENV_SETTINGS		\
 	CONFIG_MFG_ENV_SETTINGS \
+	XEN_BOOT_ENV \
 	M4_BOOT_ENV \
 	"script=boot.scr\0" \
 	"image=Image\0" \
-- 
2.17.1