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[S390] set preferred console based on conmode

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setup_arch() unconditionally sets the preferred console to ttyS.
This breaks the use of 3270 devices as the console. Provide a new
function to set the default preferred console for s390. The preferred
console depends on the conmode parameter that is used to switch
between 3270 and 3215 terminal/console mode.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Hendrik Brueckner 2009-08-23 18:09:06 +02:00 committed by Martin Schwidefsky
parent cf05b824db
commit 637952ca68
1 changed files with 18 additions and 7 deletions
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25
arch/s390/kernel/setup.c
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@ -154,6 +154,20 @@ static int __init condev_setup(char *str)
__setup("condev=", condev_setup);
static void __init set_preferred_console(void)
{
if (MACHINE_IS_KVM) {
add_preferred_console("hvc", 0, NULL);
s390_virtio_console_init();
return;
}
if (CONSOLE_IS_3215 || CONSOLE_IS_SCLP)
add_preferred_console("ttyS", 0, NULL);
if (CONSOLE_IS_3270)
add_preferred_console("tty3270", 0, NULL);
}
static int __init conmode_setup(char *str)
{
#if defined(CONFIG_SCLP_CONSOLE) || defined(CONFIG_SCLP_VT220_CONSOLE)
@ -168,6 +182,7 @@ static int __init conmode_setup(char *str)
if (strncmp(str, "3270", 5) == 0)
SET_CONSOLE_3270;
#endif
set_preferred_console();
return 1;
}
@ -780,9 +795,6 @@ static void __init setup_hwcaps(void)
void __init
setup_arch(char **cmdline_p)
{
/* set up preferred console */
add_preferred_console("ttyS", 0, NULL);
/*
* print what head.S has found out about the machine
*/
@ -802,11 +814,9 @@ setup_arch(char **cmdline_p)
if (MACHINE_IS_VM)
pr_info("Linux is running as a z/VM "
"guest operating system in 64-bit mode\n");
else if (MACHINE_IS_KVM) {
else if (MACHINE_IS_KVM)
pr_info("Linux is running under KVM in 64-bit mode\n");
add_preferred_console("hvc", 0, NULL);
s390_virtio_console_init();
} else
else
pr_info("Linux is running natively in 64-bit mode\n");
#endif /* CONFIG_64BIT */
@ -851,6 +861,7 @@ setup_arch(char **cmdline_p)
/* Setup default console */
conmode_default();
set_preferred_console();
/* Setup zfcpdump support */
setup_zfcpdump(console_devno);