diff options
| author | Miodrag Dinic <miodrag.dinic@imgtec.com> | 2017-08-29 15:53:20 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-31 18:58:45 +0200 |
| commit | 3840ed9548f778717aaab5eab744da798c3ea055 (patch) | |
| tree | 322458246a1fa3351a5d4331e1102bccbffe5aad /drivers/tty/Kconfig | |
| parent | tty: goldfish: Use streaming DMA for r/w operations on Ranchu platforms (diff) | |
| download | linux-3840ed9548f778717aaab5eab744da798c3ea055.tar.xz linux-3840ed9548f778717aaab5eab744da798c3ea055.zip | |
tty: goldfish: Implement support for kernel 'earlycon' parameter
Add early console functionality to the Goldfish tty driver.
When 'earlycon' kernel command line parameter is used with no options,
the early console is determined by the 'stdout-path' property in device
tree's 'chosen' node. This is illustrated in the following device tree
source example:
Device tree example:
chosen {
stdout-path = "/goldfish_tty@1f004000";
};
goldfish_tty@1f004000 {
interrupts = <0xc>;
reg = <0x1f004000 0x0 0x1000>;
compatible = "google,goldfish-tty";
};
Signed-off-by: Miodrag Dinic <miodrag.dinic@imgtec.com>
Signed-off-by: Goran Ferenc <goran.ferenc@imgtec.com>
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/Kconfig')
| -rw-r--r-- | drivers/tty/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig index 95103054c0e4..873e0ba89737 100644 --- a/drivers/tty/Kconfig +++ b/drivers/tty/Kconfig @@ -392,6 +392,9 @@ config PPC_EARLY_DEBUG_EHV_BC_HANDLE config GOLDFISH_TTY tristate "Goldfish TTY Driver" depends on GOLDFISH + select SERIAL_CORE + select SERIAL_CORE_CONSOLE + select SERIAL_EARLYCON help Console and system TTY driver for the Goldfish virtual platform. |