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xenvm: drivers: serial: Add consoleio Xen serial driver for Domain 0

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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>
This commit is contained in:
Dmytro Firsov 2021-10-07 17:58:42 +03:00 • committed by Anas Nashif
commit 31b4e4124d
5 changed files with 79 additions and 3 deletions
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drivers/serial/CMakeLists.txt
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@ -45,6 +45,7 @@ zephyr_library_sources_ifdef(CONFIG_UART_XEC uart_mchp_xec.c)
zephyr_library_sources_ifdef(CONFIG_UART_NEORV32 uart_neorv32.c)
zephyr_library_sources_ifdef(CONFIG_USART_GD32 usart_gd32.c)
zephyr_library_sources_ifdef(CONFIG_UART_XEN_HVC uart_hvc_xen.c)
zephyr_library_sources_ifdef(CONFIG_UART_XEN_HVC_CONSOLEIO uart_hvc_xen_consoleio.c)
zephyr_library_sources_ifdef(CONFIG_USERSPACE uart_handlers.c)