Thanks a lot for your help Miod. I will try to apply this patch and rebuild the
kernel.
On December 21, 2023 2:29:32 PM GMT+01:00, Miod Vallat <m...@online.fr> wrote:
>> Hello Miod,
>>
>> Thank you for your reply.
>>
>> It would appear that, at least in my case, /dev/tty00 is not mapped to
>> any driver.
>
>Oops, my had, I hadn't looked carefully enough. It turns out that there
>are no device nodes created for pluart at the moment.
>
>The following diff takes care of it; you will need to build a new kernel
>with the conf.c change and also need to use the updated MAKEDEV to
>create the /dev/ttyP0 node.
>
>Index: etc//MAKEDEV.common
>===================================================================
>RCS file: /OpenBSD/src/etc/MAKEDEV.common,v
>retrieving revision 1.120
>diff -u -p -r1.120 MAKEDEV.common
>--- etc//MAKEDEV.common 28 Jan 2023 11:04:47 -0000 1.120
>+++ etc//MAKEDEV.common 21 Dec 2023 13:26:21 -0000
>@@ -167,6 +167,7 @@ target(all, bpf)dnl
> target(all, kcov)dnl
> target(all, dt)dnl
> target(all, kstat)dnl
>+twrget(all, pluart, ttyP0, 0, 1)dnl
> dnl
> _mkdev(all, {-all-}, {-dnl
> show_target(all)dnl
>@@ -535,3 +536,8 @@ __devitem(kstat, kstat, Kernel Statistic
> _mkdev(kstat, kstat, {-M kstat c major_kstat_c 0 640-})dnl
> __devitem(efi, efi, EFI runtime services)dnl
> _mkdev(efi, efi, {-M efi c major_efi_c 0 600-})dnl
>+__devitem({-pluart-}, {-ttyP[0-1]-}, serial ports)dnl
>+_mkdev(com, {-ttyP[0-1]-}, {-U=${i#ttyP*}
>+ o=$(h2d $U)
>+ M ttyP$U c major_pluart_c $o 660 dialer root
>+ M cuaP$U c major_pluart_c Add($o, 128) 660 dialer root-})dnl
>Index: etc//etc.arm64/MAKEDEV
>===================================================================
>RCS file: /OpenBSD/src/etc/etc.arm64/MAKEDEV,v
>retrieving revision 1.27
>diff -u -p -r1.27 MAKEDEV
>--- etc//etc.arm64/MAKEDEV 28 Jan 2023 11:47:25 -0000 1.27
>+++ etc//etc.arm64/MAKEDEV 21 Dec 2023 13:26:21 -0000
>@@ -39,6 +39,7 @@
> # ch* SCSI media changers
> # Terminal ports:
> # tty[0-7][0-9a-f] NS16x50 serial ports
>+# ttyP[0-1] serial ports
> # Pseudo terminals:
> # ptm pty master device
> # pty* Set of 62 master pseudo terminals
>@@ -511,12 +512,12 @@ all)
> R efi ipmi0 dri gpio0 gpio1 gpio2 bktr0 vnd0 vnd1 vnd2 vnd3
> R sd0 sd1 sd2 sd3 sd4 sd5 sd6 sd7 sd8 sd9 cd0 cd1 rd0 tap0
> R tap1 tap2 tap3 tun0 tun1 tun2 tun3 bio pty0 diskmap vscsi0
>- R ch0 audio0 audio1 audio2 audio3 kstat dt bpf fuse pppac pppx
>- R hotplug ptm local wscons pci0 pci1 pci2 pci3 uall rmidi0
>- R rmidi1 rmidi2 rmidi3 rmidi4 rmidi5 rmidi6 rmidi7 tuner0
>- R radio0 video0 video1 uk0 random tty00 tty01 tty02 tty03
>- R tty04 tty05 tty06 tty07 tty08 tty09 tty0a tty0b apm pf wd0
>- R wd1 wd2 wd3 std fd
>+ R ch0 audio0 audio1 audio2 audio3 ttyP00 ttyP01 kstat dt bpf
>+ R fuse pppac pppx hotplug ptm local wscons pci0 pci1 pci2 pci3
>+ R uall rmidi0 rmidi1 rmidi2 rmidi3 rmidi4 rmidi5 rmidi6 rmidi7
>+ R tuner0 radio0 video0 video1 uk0 random tty00 tty01 tty02
>+ R tty03 tty04 tty05 tty06 tty07 tty08 tty09 tty0a tty0b apm pf
>+ R wd0 wd1 wd2 wd3 std fd
> ;;
>
> wd*|sd*)
>Index: etc//etc.arm64/MAKEDEV.md
>===================================================================
>RCS file: /OpenBSD/src/etc/etc.arm64/MAKEDEV.md,v
>retrieving revision 1.16
>diff -u -p -r1.16 MAKEDEV.md
>--- etc//etc.arm64/MAKEDEV.md 14 Jan 2023 12:15:12 -0000 1.16
>+++ etc//etc.arm64/MAKEDEV.md 21 Dec 2023 13:26:21 -0000
>@@ -34,6 +34,7 @@ _TITLE(tap)
> _DEV(ch, 17)
> _TITLE(term)
> _DEV(com, 8)
>+_DEV(pluart, 10)
> _TITLE(pty)
> _DEV(ptm, 81)
> _DEV(pty, 6)
>Index: etc//etc.armv7/MAKEDEV
>===================================================================
>RCS file: /OpenBSD/src/etc/etc.armv7/MAKEDEV,v
>retrieving revision 1.42
>diff -u -p -r1.42 MAKEDEV
>--- etc//etc.armv7/MAKEDEV 28 Jan 2023 11:47:25 -0000 1.42
>+++ etc//etc.armv7/MAKEDEV 21 Dec 2023 13:26:21 -0000
>@@ -40,6 +40,7 @@
> # st* SCSI tape drives
> # Terminal ports:
> # tty[0-7][0-9a-f] NS16x50 serial ports
>+# ttyP[0-1] serial ports
> # Pseudo terminals:
> # ptm pty master device
> # pty* Set of 62 master pseudo terminals
>@@ -494,12 +495,12 @@ all)
> R gpio0 gpio1 gpio2 gpio3 gpio4 gpio5 gpio6 gpio7 gpio8 vnd0
> R vnd1 vnd2 vnd3 sd0 sd1 sd2 sd3 sd4 sd5 sd6 sd7 sd8 sd9 cd0
> R cd1 rd0 tap0 tap1 tap2 tap3 tun0 tun1 tun2 tun3 bio pty0
>- R diskmap vscsi0 ch0 audio0 audio1 audio2 kstat dt bpf fuse
>- R pppac pppx hotplug ptm local wscons pci0 pci1 pci2 pci3 uall
>- R rmidi0 rmidi1 rmidi2 rmidi3 rmidi4 rmidi5 rmidi6 rmidi7
>- R tuner0 radio0 video0 video1 uk0 random tty00 tty01 tty02
>- R tty03 tty04 tty05 tty06 tty07 tty08 tty09 tty0a tty0b apm pf
>- R wd0 wd1 wd2 wd3 std st0 st1 fd
>+ R diskmap vscsi0 ch0 audio0 audio1 audio2 ttyP00 ttyP01 kstat
>+ R dt bpf fuse pppac pppx hotplug ptm local wscons pci0 pci1
>+ R pci2 pci3 uall rmidi0 rmidi1 rmidi2 rmidi3 rmidi4 rmidi5
>+ R rmidi6 rmidi7 tuner0 radio0 video0 video1 uk0 random tty00
>+ R tty01 tty02 tty03 tty04 tty05 tty06 tty07 tty08 tty09 tty0a
>+ R tty0b apm pf wd0 wd1 wd2 wd3 std st0 st1 fd
> ;;
>
> wd*|sd*)
>Index: etc//etc.armv7/MAKEDEV.md
>===================================================================
>RCS file: /OpenBSD/src/etc/etc.armv7/MAKEDEV.md,v
>retrieving revision 1.22
>diff -u -p -r1.22 MAKEDEV.md
>--- etc//etc.armv7/MAKEDEV.md 9 Nov 2022 19:35:23 -0000 1.22
>+++ etc//etc.armv7/MAKEDEV.md 21 Dec 2023 13:26:21 -0000
>@@ -42,9 +42,9 @@ _DEV(wd, 16, 16)
> _TITLE(tap)
> _DEV(st, 25)
> _TITLE(term)
>-dnl _DEV(com, 12)
> dnl _DEV(fcom, 54)
> _DEV(com, 12)
>+_DEV(pluart, 10)
> _TITLE(pty)
> _DEV(ptm, 98)
> _DEV(pty, 5)
>Index: share/man/man4/pluart.4
>===================================================================
>RCS file: /OpenBSD/src/share/man/man4/pluart.4,v
>retrieving revision 1.2
>diff -u -p -r1.2 pluart.4
>--- share/man/man4/pluart.4 2 Jul 2018 15:39:33 -0000 1.2
>+++ share/man/man4/pluart.4 21 Dec 2023 13:26:21 -0000
>@@ -27,6 +27,13 @@
> The
> .Nm
> driver supports the ARM PrimeCell PL011 UART.
>+.Sh FILES
>+.Bl -tag -width Pa -compact
>+.It Pa /dev/ttyP0
>+.It Pa /dev/ttyP1
>+.It Pa /dev/cuap0
>+.It Pa /dev/cuaP1
>+.El
> .Sh SEE ALSO
> .Xr tty 4
> .Rs
>Index: sys/arch/arm/arm/conf.c
>===================================================================
>RCS file: /OpenBSD/src/sys/arch/arm/arm/conf.c,v
>retrieving revision 1.59
>diff -u -p -r1.59 conf.c
>--- sys/arch/arm/arm/conf.c 2 Sep 2022 20:06:55 -0000 1.59
>+++ sys/arch/arm/arm/conf.c 21 Dec 2023 13:26:21 -0000
>@@ -142,6 +142,9 @@ cdev_decl(wsmouse);
> #include "radio.h"
> cdev_decl(radio);
>
>+#include "pluart.h"
>+cdev_decl(pluart);
>+
> #include <arm/conf.h>
>
> /* Block devices */
>@@ -275,7 +278,7 @@ struct cdevsw cdevsw[] = {
> cdev_fd_init(1,filedesc), /* 7: file descriptor
> pseudo-device */
> cdev_ksyms_init(NKSYMS,ksyms), /* 8: Kernel symbols device */
> cdev_lpt_init(NLPT,lpt), /* 9: parallel printer */
>- cdev_notdef(), /* 10: */
>+ cdev_tty_init(NPLUART,pluart), /* 10: serial port */
> cdev_notdef(), /* 11: */
> cdev_tty_init(NCOM,com), /* 12: serial port */
> cdev_gpio_init(NGPIO,gpio), /* 13: GPIO interface */
>Index: sys/arch/arm64/arm64/conf.c
>===================================================================
>RCS file: /OpenBSD/src/sys/arch/arm64/arm64/conf.c,v
>retrieving revision 1.22
>diff -u -p -r1.22 conf.c
>--- sys/arch/arm64/arm64/conf.c 6 Mar 2023 17:20:06 -0000 1.22
>+++ sys/arch/arm64/arm64/conf.c 21 Dec 2023 13:26:21 -0000
>@@ -101,6 +101,8 @@ cdev_decl(lpt);
> #include "radio.h"
> #include "drm.h"
> cdev_decl(drm);
>+#include "pluart.h"
>+cdev_decl(pluart);
>
> #include "wsdisplay.h"
> #include "wskbd.h"
>@@ -135,7 +137,7 @@ struct cdevsw cdevsw[] =
> cdev_log_init(1,log), /* 7: /dev/klog */
> cdev_tty_init(NCOM,com), /* 8: serial port */
> cdev_notdef(), /* 9: was floppy disk */
>- cdev_notdef(), /* 10 */
>+ cdev_tty_init(NPLUART,pluart), /* 10: serial port */
> cdev_notdef(), /* 11: Sony CD-ROM */
> cdev_wsdisplay_init(NWSDISPLAY, /* 12: frame buffers, etc. */
> wsdisplay),
