> 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),
