Commit graph

5 commits

Author SHA1 Message Date
Tom Rini
cc696f5256 Revert "serial: serial_xen: print U-Boot banner and others"
This reverts commit 18426bf022.

Signed-off-by: Tom Rini <trini@konsulko.com>
2020-10-23 09:16:13 -04:00
Tom Rini
467591b8d2 Revert "serial: serial_xen: add DEBUG_UART support"
This reverts commit 82e21b391b.

Signed-off-by: Tom Rini <trini@konsulko.com>
2020-10-23 09:15:55 -04:00
AKASHI Takahiro
82e21b391b serial: serial_xen: add DEBUG_UART support
By using a hypervisor call, we can implement DEBUG_UART on xen.
This will allow us to see messages even earlier than serial_init().

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
2020-10-22 11:26:14 -04:00
AKASHI Takahiro
18426bf022 serial: serial_xen: print U-Boot banner and others
At present, DM_FLAG_PRE_RELOC is set only if !OF_CONTROL.
It doesn't make sense for this para-virtualized driver.

With this patch applied, you will be able to see early boot messages:

U-Boot 2020.10-00001-ge442e71a6c52-dirty (Oct 15 2020 - 11:02:25 +0900)
xenguest

Xen virtual CPU
Model: XENVM-4.15
DRAM:  128 MiB
PVBLOCK:
(XEN) gnttab_mark_dirty not implemented yet
pvblock: 0
In:    hypervisor
Out:   hypervisor
Err:   hypervisor
xenguest#

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
2020-10-22 11:26:14 -04:00
Peng Fan
384d5cfe5d serial: serial_xen: Add Xen PV serial driver
Add support for Xen para-virtualized serial driver. This
driver fully supports serial console for the virtual machine.

Please note that as the driver is initialized late, so no banner
nor memory size is visible.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Signed-off-by: Anastasiia Lukianenko <anastasiia_lukianenko@epam.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-08-14 15:18:30 -04:00