search for: uart8250

I'm trying to get isolinux serial port working on a system. Using UEFI boot mode but system does not have Legacy Serial port (3f8, etc) enabled. Serial port devices are PCI devices, memory mapped I/O with 32-bit offset. Using linux kernel command line console=uart8250,mmio32,xxxx,115200n8 works. However I do not see syslinux/isolinux boot menu. Looking through the code it looks like syslinux assumes serial ports are I/O only and do not use EFI boot services Serial Port?

Hi, I want to try Xen on ARMv8 Simulator. Can you please provide guidance?. I am looking for information about sources, build and procedure to launch Xen on ARMv8 Thanks & Regards Vijay

...dmesg [ 0.000000] Booting Linux on physical CPU 0x0000000100 [0x411fd073] [ 0.000000] Linux version 5.6.10-zotac (root at saux) (gcc version 9.3.0 (SAUX Aarch64)) #1 SMP PREEMPT Tue May 5 22:16:40 CEST 2020 [ 0.000000] Machine model: NVIDIA Jetson TX2 Developer Kit [ 0.000000] earlycon: uart8250 at MMIO32 0x0000000003100000 (options '') [ 0.000000] printk: bootconsole [uart8250] enabled [ 0.000000] efi: Getting EFI parameters from FDT: [ 0.000000] efi: UEFI not found. [ 0.000000] cma: Reserved 32 MiB at 0x00000000fe000000 [ 0.000000] NUMA: No NUMA configuration found...

...tocol Version 11, Revision 0 [ 35.825] Build Operating System: Linux 3.16.0-4-arm64 aarch64 Debian [ 35.825] Current Operating System: Linux ls2085ardb 4.1.8 #4 SMP PREEMPT Mon Jul 4 18:54:59 CEST 2016 aarch64 [ 35.825] Kernel command line: console=ttyS1,115200 root=/dev/mmcblk0p2 earlycon=uart8250,mmio,0x21c0600,115200 default_hugepagesz=2m nomodeset hugepagesz=2m hugepages=16 rw rootdelay=5 [ 35.825] Build Date: 05 April 2016 06:59:38AM [ 35.825] xorg-server 2:1.18.3-1 (http://www.debian.org/support) [ 35.825] Current version of pixman: 0.33.6 [ 35.825] Before reporting prob...

Hi to all. I'm experimenting with running a https://www.zotac.com/us/product/graphics_card/geforce%C2%AE-gt-710-1gb-pcie-x-1 card on an Nvidia Jetson TX2 arm64 device. Possible? Linux kernel aarch64 5.6.10. Because Nvidia did not list drivers for this architecture, I'm experimenting with a nouveau driver. The Jetson TX2 has a default driver for the host1x framebuffer for output from the

...n 0 > [ 35.825] Build Operating System: Linux 3.16.0-4-arm64 aarch64 Debian > [ 35.825] Current Operating System: Linux ls2085ardb 4.1.8 #4 SMP > PREEMPT Mon Jul 4 18:54:59 CEST 2016 aarch64 > [ 35.825] Kernel command line: console=ttyS1,115200 > root=/dev/mmcblk0p2 earlycon=uart8250,mmio,0x21c0600,115200 > default_hugepagesz=2m nomodeset hugepagesz=2m hugepages=16 rw > rootdelay=5 > [ 35.825] Build Date: 05 April 2016 06:59:38AM > [ 35.825] xorg-server 2:1.18.3-1 (http://www.debian.org/support) > [ 35.825] Current version of pixman: 0.33.6 > [ 35...

...8574 [0001.884] W> No valid slot number is found in scratch register [0001.890] W> Return default slot: _a [0001.893] I> Linux Cmdline: root=/dev/mmcblk1p1 rw rootwait fbcon=map:0 net.ifnames=0 console=tty0 OS=l4t console=ttyS0,115200n8 memtype=0 video=tegrafb no_console_suspend=1 earlycon=uart8250,mmio32,0x03100000 nvdumper_reserved=0xf7fc0000 gpt androidboot.secureos=none tegraid=18.1.2.0.0 tegra_keep_boot_clocks maxcpus=6 android.kerneltype=normal androidboot.serialno=0320717048574 androidboot.security=non-secure sdhci_tegra.en_boot_part_access=1 [0001.932] I> Updated bootarg info to DT...

With linux-next-2017-12-14, I get a crash when nouveau is loaded by systemd-udevd. [ 12.050625] Unable to handle kernel NULL pointer dereference at virtual address 00000058 [ 12.050627] Mem abort info: [ 12.050628] ESR = 0x96000004 [ 12.050630] Exception class = DABT (current EL), IL = 32 bits [ 12.050631] SET = 0, FnV = 0 [ 12.050632] EA = 0, S1PTW = 0 [ 12.050633] Data

...8574 [0001.881] W> No valid slot number is found in scratch register [0001.886] W> Return default slot: _a [0001.890] I> Linux Cmdline: root=/dev/mmcblk1p1 rw rootwait fbcon=map:0 net.ifnames=0 console=tty0 OS=l4t console=ttyS0,115200n8 memtype=0 video=tegrafb no_console_suspend=1 earlycon=uart8250,mmio32,0x03100000 nvdumper_reserved=0xf7fc0000 gpt androidboot.secureos=none tegraid=18.1.2.0.0 tegra_keep_boot_clocks maxcpus=6 android.kerneltype=normal androidboot.serialno=0320717048574 androidboot.security=non-secure sdhci_tegra.en_boot_part_access=1 [0001.929] I> Updated bootarg info to DT...