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zephyr/drivers/serial/Kconfig.xen

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xenvm: drivers: serial: Implement serial interface to Xen PV console This commit adds minimal support of Xen hypervisor console via UART-like driver. Implementation allows to use poll_in/poll_out char interface for uart_console.c driver directly to HV console instead of using Xen virtual PL011 UART. Future implementation will support interrupt driven interface on Xen event channels, currently it is under development. Also this commit introduces early console_io Xen interface, which allows to receive printk/stdout messages quickly after start, but requires Xen, built with CONFIG_DEBUG option. Signed-off-by: Dmytro Firsov <dmytro_firsov@epam.com>
2021-07-02 16:31:56 +08:00
# Xen hypervisor console via UART setup
#
# Copyright (c) 2021 EPAM Systems
# SPDX-License-Identifier: Apache-2.0
#
config UART_XEN_HVC
xenvm: drivers: serial: Add consoleio Xen serial driver for Domain 0 This commit adds Xen consoleio serial driver. It is needed to receive kernel messages from Zephyr in case it runs as Xen privileged domain (Dom0). There is no console ring buffer for such domain, so regular uart_hvc_xen driver can not be used (privileged domain input/output are possible only through consoleio interface). Signed-off-by: Dmytro Firsov <dmytro_firsov@epam.com>
2021-10-07 22:58:42 +08:00
bool "Xen hypervisor DomU console UART driver"
xenvm: drivers: serial: Implement serial interface to Xen PV console This commit adds minimal support of Xen hypervisor console via UART-like driver. Implementation allows to use poll_in/poll_out char interface for uart_console.c driver directly to HV console instead of using Xen virtual PL011 UART. Future implementation will support interrupt driven interface on Xen event channels, currently it is under development. Also this commit introduces early console_io Xen interface, which allows to receive printk/stdout messages quickly after start, but requires Xen, built with CONFIG_DEBUG option. Signed-off-by: Dmytro Firsov <dmytro_firsov@epam.com>
2021-07-02 16:31:56 +08:00
select SERIAL_HAS_DRIVER
xenvm: drivers: serial: add interrupt-driven API for Xen PV console This commit adds support of interrupt-driven API for UART-like Xen PV console driver. It is implemented via Xen event channels. It allows to send and receive data by chunks (not single symbols) and without polling. Signed-off-by: Dmytro Firsov <dmytro_firsov@epam.com>
2021-09-17 05:10:49 +08:00
select SERIAL_SUPPORT_INTERRUPT
xenvm: drivers: serial: Implement serial interface to Xen PV console This commit adds minimal support of Xen hypervisor console via UART-like driver. Implementation allows to use poll_in/poll_out char interface for uart_console.c driver directly to HV console instead of using Xen virtual PL011 UART. Future implementation will support interrupt driven interface on Xen event channels, currently it is under development. Also this commit introduces early console_io Xen interface, which allows to receive printk/stdout messages quickly after start, but requires Xen, built with CONFIG_DEBUG option. Signed-off-by: Dmytro Firsov <dmytro_firsov@epam.com>
2021-07-02 16:31:56 +08:00
depends on BOARD_XENVM
xenvm: drivers: serial: Add consoleio Xen serial driver for Domain 0 This commit adds Xen consoleio serial driver. It is needed to receive kernel messages from Zephyr in case it runs as Xen privileged domain (Dom0). There is no console ring buffer for such domain, so regular uart_hvc_xen driver can not be used (privileged domain input/output are possible only through consoleio interface). Signed-off-by: Dmytro Firsov <dmytro_firsov@epam.com>
2021-10-07 22:58:42 +08:00
depends on !XEN_INITIAL_DOMAIN
xenvm: drivers: serial: Implement serial interface to Xen PV console This commit adds minimal support of Xen hypervisor console via UART-like driver. Implementation allows to use poll_in/poll_out char interface for uart_console.c driver directly to HV console instead of using Xen virtual PL011 UART. Future implementation will support interrupt driven interface on Xen event channels, currently it is under development. Also this commit introduces early console_io Xen interface, which allows to receive printk/stdout messages quickly after start, but requires Xen, built with CONFIG_DEBUG option. Signed-off-by: Dmytro Firsov <dmytro_firsov@epam.com>
2021-07-02 16:31:56 +08:00
default y
help
xenvm: drivers: serial: Add consoleio Xen serial driver for Domain 0 This commit adds Xen consoleio serial driver. It is needed to receive kernel messages from Zephyr in case it runs as Xen privileged domain (Dom0). There is no console ring buffer for such domain, so regular uart_hvc_xen driver can not be used (privileged domain input/output are possible only through consoleio interface). Signed-off-by: Dmytro Firsov <dmytro_firsov@epam.com>
2021-10-07 22:58:42 +08:00
Enable Xen ring buffer based hypervisor console driver. Used
for Zephyr as unprivileged domain.
config UART_XEN_HVC_CONSOLEIO
bool "Xen hypervisor Dom0 console UART driver"
select SERIAL_HAS_DRIVER
depends on BOARD_XENVM
depends on XEN_INITIAL_DOMAIN
default y
help
Enable Xen hypervisor console driver. Used for Zephyr as
privileged domain (Dom0).
xenvm: drivers: serial: Implement serial interface to Xen PV console This commit adds minimal support of Xen hypervisor console via UART-like driver. Implementation allows to use poll_in/poll_out char interface for uart_console.c driver directly to HV console instead of using Xen virtual PL011 UART. Future implementation will support interrupt driven interface on Xen event channels, currently it is under development. Also this commit introduces early console_io Xen interface, which allows to receive printk/stdout messages quickly after start, but requires Xen, built with CONFIG_DEBUG option. Signed-off-by: Dmytro Firsov <dmytro_firsov@epam.com>
2021-07-02 16:31:56 +08:00
config XEN_HVC_INIT_PRIORITY
int "Xen hypervisor console init priority"
xenvm: drivers: serial: Add consoleio Xen serial driver for Domain 0 This commit adds Xen consoleio serial driver. It is needed to receive kernel messages from Zephyr in case it runs as Xen privileged domain (Dom0). There is no console ring buffer for such domain, so regular uart_hvc_xen driver can not be used (privileged domain input/output are possible only through consoleio interface). Signed-off-by: Dmytro Firsov <dmytro_firsov@epam.com>
2021-10-07 22:58:42 +08:00
depends on UART_XEN_HVC || UART_XEN_HVC_CONSOLEIO
xenvm: drivers: serial: Implement serial interface to Xen PV console This commit adds minimal support of Xen hypervisor console via UART-like driver. Implementation allows to use poll_in/poll_out char interface for uart_console.c driver directly to HV console instead of using Xen virtual PL011 UART. Future implementation will support interrupt driven interface on Xen event channels, currently it is under development. Also this commit introduces early console_io Xen interface, which allows to receive printk/stdout messages quickly after start, but requires Xen, built with CONFIG_DEBUG option. Signed-off-by: Dmytro Firsov <dmytro_firsov@epam.com>
2021-07-02 16:31:56 +08:00
default 55
help
Set init priority for Xen HVC, should be inited before UART
console driver (HVC gets inited on PRE_KERNEL_1 stage).
config XEN_EARLY_CONSOLEIO
bool "Early printk/stdout through console_io Xen interface"
depends on BOARD_XENVM
xenvm: drivers: serial: Add consoleio Xen serial driver for Domain 0 This commit adds Xen consoleio serial driver. It is needed to receive kernel messages from Zephyr in case it runs as Xen privileged domain (Dom0). There is no console ring buffer for such domain, so regular uart_hvc_xen driver can not be used (privileged domain input/output are possible only through consoleio interface). Signed-off-by: Dmytro Firsov <dmytro_firsov@epam.com>
2021-10-07 22:58:42 +08:00
depends on UART_XEN_HVC
xenvm: drivers: serial: Implement serial interface to Xen PV console This commit adds minimal support of Xen hypervisor console via UART-like driver. Implementation allows to use poll_in/poll_out char interface for uart_console.c driver directly to HV console instead of using Xen virtual PL011 UART. Future implementation will support interrupt driven interface on Xen event channels, currently it is under development. Also this commit introduces early console_io Xen interface, which allows to receive printk/stdout messages quickly after start, but requires Xen, built with CONFIG_DEBUG option. Signed-off-by: Dmytro Firsov <dmytro_firsov@epam.com>
2021-07-02 16:31:56 +08:00
help
Enable setting of console_io symbol hook for stdout and printk.
Log output will become available on PRE_KERNEL_1 stage. Requires
Xen, compiled with CONFIG_DEBUG flag.