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x86: add early quirk support

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Add early quirks support.

In preparation of enabling the generic architecture to boot on a VISWS.

This will allow us to remove the VISWS subarch and all its complications.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar
2008-07-10 17:30:40 +02:00
parent 520b9617ab
commit 3b33553bad
4 changed files with 47 additions and 2 deletions
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11
arch/x86/kernel/e820.c
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@@ -1297,6 +1297,11 @@ void __init e820_reserve_resources(void)
}
}
/*
* Non-standard memory setup can be specified via this quirk:
*/
char * (*arch_memory_setup_quirk)(void);
char *__init default_machine_specific_memory_setup(void)
{
char *who = "BIOS-e820";
@@ -1337,6 +1342,12 @@ char *__init default_machine_specific_memory_setup(void)
char *__init __attribute__((weak)) machine_specific_memory_setup(void)
{
if (arch_memory_setup_quirk) {
char *who = arch_memory_setup_quirk();
if (who)
return who;
}
return default_machine_specific_memory_setup();
}