diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2023-10-19 11:46:44 +0200 |
|---|---|---|
| committer | John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> | 2023-10-25 16:50:30 +0200 |
| commit | 78a96c86a0ff2be546f2ecca210fde5dca30fb59 (patch) | |
| tree | 89198dbab083b567fe7b2ccfccb82918d52952a1 | |
| parent | 553f7ac78fbb41b2c93ab9b9d78e42274d27daa9 (diff) | |
Documentation: kernel-parameters: Add earlyprintk=bios on SH
Document the use of the "earlyprintk=bios[,keep]" kernel parameter
option on SuperH systems with a SuperH standard BIOS.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/febc920964f2f0919d21775132e84c5cc270177e.1697708489.git.geert+renesas@glider.be
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 0a1731a0f0ef..2b03034207c0 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1331,6 +1331,7 @@ earlyprintk=dbgp[debugController#] earlyprintk=pciserial[,force],bus:device.function[,baudrate] earlyprintk=xdbc[xhciController#] + earlyprintk=bios earlyprintk is useful when the kernel crashes before the normal console is initialized. It is not enabled by @@ -1361,6 +1362,8 @@ The sclp output can only be used on s390. + The bios output can only be used on SuperH. + The optional "force" to "pciserial" enables use of a PCI device even when its classcode is not of the UART class. |