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1# SPDX-License-Identifier: GPL-2.0
2
3config HVC_DRIVER
4 bool
5 help
6 Generic "hypervisor virtual console" infrastructure for various
7 hypervisors (pSeries, iSeries, Xen).
8 It will automatically be selected if one of the back-end console drivers
9 is selected.
10
11config HVC_IRQ
12 bool
13
14config HVC_CONSOLE
15 bool "pSeries Hypervisor Virtual Console support"
16 depends on PPC_PSERIES
17 select HVC_DRIVER
18 select HVC_IRQ
19 help
20 pSeries machines when partitioned support a hypervisor virtual
21 console. This driver allows each pSeries partition to have a console
22 which is accessed via the HMC.
23
24config HVC_OLD_HVSI
25 bool "Old driver for pSeries serial port (/dev/hvsi*)"
26 depends on HVC_CONSOLE
27
28config HVC_OPAL
29 bool "OPAL Console support"
30 depends on PPC_POWERNV
31 select HVC_DRIVER
32 select HVC_IRQ
33 default y
34 help
35 PowerNV machines running under OPAL need that driver to get a console
36
37config HVC_RTAS
38 bool "IBM RTAS Console support"
39 depends on PPC_RTAS
40 select HVC_DRIVER
41 help
42 IBM Console device driver which makes use of RTAS
43
44config HVC_IUCV
45 bool "z/VM IUCV Hypervisor console support (VM only)"
46 depends on S390 && NET
47 select HVC_DRIVER
48 select IUCV
49 default y
50 help
51 This driver provides a Hypervisor console (HVC) back-end to access
52 a Linux (console) terminal via a z/VM IUCV communication path.
53
54config HVC_XEN
55 bool "Xen Hypervisor Console support"
56 depends on XEN
57 select HVC_DRIVER
58 select HVC_IRQ
59 default y
60 help
61 Xen virtual console device driver
62
63config HVC_XEN_FRONTEND
64 bool "Xen Hypervisor Multiple Consoles support"
65 depends on HVC_XEN
66 select XEN_XENBUS_FRONTEND
67 default y
68 help
69 Xen driver for secondary virtual consoles
70
71config HVC_UDBG
72 bool "udbg based fake hypervisor console"
73 depends on PPC
74 select HVC_DRIVER
75 help
76 This is meant to be used during HW bring up or debugging when
77 no other console mechanism exist but udbg, to get you a quick
78 console for userspace. Do NOT enable in production kernels.
79
80config HVC_DCC
81 bool "ARM JTAG DCC console"
82 depends on ARM || ARM64
83 select HVC_DRIVER
84 select SERIAL_CORE_CONSOLE
85 help
86 This console uses the JTAG DCC on ARM to create a console under the HVC
87 driver. This console is used through a JTAG only on ARM. If you don't have
88 a JTAG then you probably don't want this option.
89
90config HVC_RISCV_SBI
91 bool "RISC-V SBI console support"
92 depends on RISCV_SBI_V01
93 select HVC_DRIVER
94 help
95 This enables support for console output via RISC-V SBI calls, which
96 is normally used only during boot to output printk.
97
98 If you don't know what do to here, say Y.
99
100config HVCS
101 tristate "IBM Hypervisor Virtual Console Server support"
102 depends on PPC_PSERIES && HVC_CONSOLE
103 help
104 Partitionable IBM Power5 ppc64 machines allow hosting of
105 firmware virtual consoles from one Linux partition by
106 another Linux partition. This driver allows console data
107 from Linux partitions to be accessed through TTY device
108 interfaces in the device tree of a Linux partition running
109 this driver.
110
111 To compile this driver as a module, choose M here: the
112 module will be called hvcs. Additionally, this module
113 will depend on arch specific APIs exported from hvcserver.ko
114 which will also be compiled when this driver is built as a
115 module.