x86, earlyprintk: Add hsu early console for Intel Medfield platform
Intel Medfield platform has a high speed UART device, which
could act as a early console. To enable early printk of HSU
console, simply add "earlyprintk=hsu" in kernel command line.
Currently we put the code in the early_printk_mrst.c as it is
also for Intel MID platforms like the mrst early console
Signed-off-by: Feng Tang <feng.tang@intel.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Cc: greg@kroah.com
LKML-Reference: <1284361736-23011-5-git-send-email-feng.tang@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/early_printk.c b/arch/x86/kernel/early_printk.c
index 6082463..4572f25 100644
--- a/arch/x86/kernel/early_printk.c
+++ b/arch/x86/kernel/early_printk.c
@@ -245,6 +245,12 @@
mrst_early_console_init();
early_console_register(&early_mrst_console, keep);
}
+
+ if (!strncmp(buf, "hsu", 3)) {
+ hsu_early_console_init();
+ early_console_register(&early_hsu_console, keep);
+ }
+
#endif
buf++;
}