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[Xen-devel] [PATCH] xen:arm earlyprintk configuration for Hikey 960 boards

Introduce an earlyprintk configuration of Hikey 960 boards.

Tested with:
 https://github.com/96boards-hikey/edk2.git #testing/hikey960_v2.5
 https://github.com/96boards-hikey/OpenPlatformPkg.git #testing/hikey960_v1.3.4
 https://git.savannah.gnu.org/git/grub.git #master
 https://github.com/96boards-hikey/linux.git #hikey960-upstream-rebase

For GRUB, the following stanza was used:

GRUB_MODULES="boot chain configfile echo efinet eval ext2 fat font gettext 
gfxterm gzio help linux loadenv lsefi normal part_gpt par
t_msdos read regexp search search_fs_file search_fs_uuid search_label terminal 
terminfo test tftp time xen_boot"

grub-install/usr/bin/grub-mkimage \
                --config grub.config \
                --dtb linux/arch/arm64/boot/dts/hisilicon/hi3660-hikey960.dtb \
                --directory=grub/usr/lib64/grub/arm64-efi \
                --output=grubaa64.efi \
                --format=arm64-efi \
                --prefix="/boot/grub" \

And grub.config:
search.fs_label rootfs root

set prefix=($root)/boot/grub
configfile $prefix/grub.cfg

Signed-off-by: Konrad Rzeszutek Wilk <konrad@xxxxxxxxxx>
 docs/misc/arm/early-printk.txt | 1 +
 xen/arch/arm/Rules.mk          | 1 +
 2 files changed, 2 insertions(+)

diff --git a/docs/misc/arm/early-printk.txt b/docs/misc/arm/early-printk.txt
index 41b528b9fa..61c5ad9eac 100644
--- a/docs/misc/arm/early-printk.txt
+++ b/docs/misc/arm/early-printk.txt
@@ -49,6 +49,7 @@ the name of the machine:
   - xgene-mcdivitt: printk with 820 on Xgene mcdivitt platform
   - xgene-storm: printk with 820 on Xgene storm platform
   - zynqmp: printk with Cadence UART for Xilinx ZynqMP SoCs
+  - hikey960: printk with pl011 with Hikey 960
 These settings are is hardcoded in xen/arch/arm/Rules.mk,
 see there when adding support for new machines.
diff --git a/xen/arch/arm/Rules.mk b/xen/arch/arm/Rules.mk
index 569a0badc8..faae29262e 100644
--- a/xen/arch/arm/Rules.mk
+++ b/xen/arch/arm/Rules.mk
@@ -44,6 +44,7 @@ EARLY_PRINTK_vexpress       := pl011,0x1c090000
 EARLY_PRINTK_xgene-mcdivitt := 8250,0x1c021000,2
 EARLY_PRINTK_xgene-storm    := 8250,0x1c020000,2
 EARLY_PRINTK_zynqmp         := cadence,0xff000000
+EARLY_PRINTK_hikey960       := pl011,0xfff32000

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