[MIPS] Early printk for IP27.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

3 files changed, 25 insertions, 27 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index aedeee9009fc..8e10f027e561 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -606,6 +606,7 @@ config SGI_IP27
         select ARC64
         select BOOT_ELF64
         select DMA_IP27
+        select EARLY_PRINTK
         select HW_HAS_PCI
         select PCI_DOMAINS
         select SYS_HAS_CPU_R10000
diff --git a/arch/mips/sgi-ip27/Makefile b/arch/mips/sgi-ip27/Makefile
index 686ba14e2882..a457263f4391 100644
--- a/arch/mips/sgi-ip27/Makefile
+++ b/arch/mips/sgi-ip27/Makefile
@@ -2,11 +2,12 @@
 # Makefile for the IP27 specific kernel interface routines under Linux.
 #
 
-obj-y   := ip27-berr.o ip27-console.o ip27-irq.o ip27-init.o \
-           ip27-klconfig.o ip27-klnuma.o ip27-memory.o ip27-nmi.o ip27-reset.o \
-           ip27-timer.o ip27-hubio.o ip27-xtalk.o
+obj-y   := ip27-berr.o ip27-irq.o ip27-init.o ip27-klconfig.o ip27-klnuma.o \
+           ip27-memory.o ip27-nmi.o ip27-reset.o ip27-timer.o ip27-hubio.o \
+           ip27-xtalk.o
 
-obj-$(CONFIG_KGDB)      += ip27-dbgio.o
-obj-$(CONFIG_SMP)       += ip27-smp.o
+obj-$(CONFIG_EARLY_PRINTK)      += ip27-console.o
+obj-$(CONFIG_KGDB)              += ip27-dbgio.o
+obj-$(CONFIG_SMP)               += ip27-smp.o
 
 EXTRA_AFLAGS := $(CFLAGS)
diff --git a/arch/mips/sgi-ip27/ip27-console.c b/arch/mips/sgi-ip27/ip27-console.c
index 3e1ac299b804..14211e382374 100644
--- a/arch/mips/sgi-ip27/ip27-console.c
+++ b/arch/mips/sgi-ip27/ip27-console.c
@@ -46,33 +46,29 @@ void prom_putchar(char c)
         uart->iu_thr = c;
 }
 
-char __init prom_getchar(void)
+static void ioc3_console_write(struct console *con, const char *s, unsigned n)
 {
-        return 0;
+        while (n-- && *s) {
+                if (*s == '\n')
+                        prom_putchar('\r');
+                prom_putchar(*s);
+                s++;
+        }
 }
 
-static void inline ioc3_console_probe(void)
-{
-        struct uart_port up;
-
-        /*
-         * Register to interrupt zero because we share the interrupt with
-         * the serial driver which we don't properly support yet.
-         */
-        memset(&up, 0, sizeof(up));
-        up.membase      = (unsigned char *) console_uart();
-        up.irq          = 0;
-        up.uartclk      = IOC3_CLK;
-        up.regshift     = 0;
-        up.iotype       = UPIO_MEM;
-        up.flags        = IOC3_FLAGS;
-        up.line         = 0;
+static struct console ioc3_console = {
+        .name   = "ioc3",
+        .write  = ioc3_console_write,
+        .flags  = CON_PRINTBUFFER | CON_BOOT,
+        .index  = -1
+};
 
-        if (early_serial_setup(&up))
-                printk(KERN_ERR "Early serial init of port 0 failed\n");
+__init void ip27_setup_console(void)
+{
+        register_console(&ioc3_console);
 }
 
-__init void ip27_setup_console(void)
+void __init disable_early_printk(void)
 {
-        ioc3_console_probe();
+        unregister_console(&ioc3_console);
 }