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[IA64] Ensure that machvec is set up takes place before serial console

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Parse the machvec command line option outside of the early_param()
so that ia64_mv is set before any console intialisation that
may result from early_param parsing.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Horms 2007-07-25 16:06:25 +09:00 committed by Tony Luck
parent 6ffbc82351
commit a07ee86205
3 changed files with 27 additions and 12 deletions
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27
arch/ia64/kernel/machvec.c
View file

@ -13,14 +13,6 @@
struct ia64_machine_vector ia64_mv;
EXPORT_SYMBOL(ia64_mv);
static __initdata const char *mvec_name;
static __init int setup_mvec(char *s)
{
mvec_name = s;
return 0;
}
early_param("machvec", setup_mvec);
static struct ia64_machine_vector * __init
lookup_machvec (const char *name)
{
@ -41,7 +33,7 @@ machvec_init (const char *name)
struct ia64_machine_vector *mv;
if (!name)
name = mvec_name ? mvec_name : acpi_get_sysname();
name = acpi_get_sysname();
mv = lookup_machvec(name);
if (!mv)
panic("generic kernel failed to find machine vector for"
@ -51,6 +43,23 @@ machvec_init (const char *name)
printk(KERN_INFO "booting generic kernel on platform %s\n", name);
}
void __init
machvec_init_from_cmdline(const char *cmdline)
{
char str[64];
const char *start;
char *end;
if (! (start = strstr(cmdline, "machvec=")) )
return machvec_init(NULL);
strlcpy(str, start + strlen("machvec="), sizeof(str));
if ( (end = strchr(str, ' ')) )
*end = '\0';
return machvec_init(str);
}
#endif /* CONFIG_IA64_GENERIC */
void

11
arch/ia64/kernel/setup.c
View file

@ -491,12 +491,17 @@ setup_arch (char **cmdline_p)
efi_init();
io_port_init();
parse_early_param();
#ifdef CONFIG_IA64_GENERIC
machvec_init(NULL);
/* machvec needs to be parsed from the command line
* before parse_early_param() is called to ensure
* that ia64_mv is initialised before any command line
* settings may cause console setup to occur
*/
machvec_init_from_cmdline(*cmdline_p);
#endif
parse_early_param();
if (early_console_setup(*cmdline_p) == 0)
mark_bsp_online();

1
include/asm-ia64/machvec.h
View file

@ -275,6 +275,7 @@ struct ia64_machine_vector {
extern struct ia64_machine_vector ia64_mv;
extern void machvec_init (const char *name);
extern void machvec_init_from_cmdline(const char *cmdline);
# else
# error Unknown configuration. Update asm-ia64/machvec.h.