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7b3604d96 MLK-18577-3 armv8: xen: add console write hypercall ... Browse Code »

Introduce console write hypercall to let Uboot could directly
output with xen console, this needs CONFIG_VERBOSE_DEBUG
enabled in xen.

Because input is not a must requirement in android VM,
and develop pvconsole needs more efforts, so let's use
this hypercall first.

Signed-off-by: Peng Fan
(cherry picked from commit 8836c3104a1edfe542e0c1cef6690bc9d3d842a0)
(cherry picked from commit aea71150857d4617009730683c95d858acb43392)
(cherry picked from commit 3173d3ac39bed27a3197829ea13ffce5a89b07ac)
(cherry picked from commit 8ece41f15c8d9c407ab0946fa28ba7365419c030)

Peng Fan
2020-05-27 15:37:53 +0800

hypercall.S 202 Bytes

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/*
 * Copyright 2018 NXP

 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <xen.h>

.globl HYPERVISOR_console_io;
.align 4;
HYPERVISOR_console_io:
	mov x16, __HYPERVISOR_console_io;
	hvc 0xEA1;
	ret;