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authorAtsushi Nemoto <anemo@mba.ocn.ne.jp>2008-07-29 22:10:08 +0900
committerRalf Baechle <ralf@linux-mips.org>2008-07-30 21:54:41 +0100
commite352953ce00bb870124e9054dbbbda2262f9269c (patch)
tree76297cc5749b91bec76d75f4520d88add8ca3efc /arch/mips/txx9/generic/setup.c
parent7779a5e07d33fe316fe468e7afe7975fb686a831 (diff)
downloadop-kernel-dev-e352953ce00bb870124e9054dbbbda2262f9269c.zip
op-kernel-dev-e352953ce00bb870124e9054dbbbda2262f9269c.tar.gz
[MIPS] TXx9: Support early_printk
Kill jmr3927-specific prom_putchar and add txx9-generic prom_putchar to support early_printk. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/txx9/generic/setup.c')
-rw-r--r--arch/mips/txx9/generic/setup.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index 94ce1a5..1bc57d0 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -271,6 +271,37 @@ void __init txx9_sio_init(unsigned long baseaddr, int irq,
#endif /* CONFIG_SERIAL_TXX9 */
}
+#ifdef CONFIG_EARLY_PRINTK
+static void __init null_prom_putchar(char c)
+{
+}
+void (*txx9_prom_putchar)(char c) __initdata = null_prom_putchar;
+
+void __init prom_putchar(char c)
+{
+ txx9_prom_putchar(c);
+}
+
+static void __iomem *early_txx9_sio_port;
+
+static void __init early_txx9_sio_putchar(char c)
+{
+#define TXX9_SICISR 0x0c
+#define TXX9_SITFIFO 0x1c
+#define TXX9_SICISR_TXALS 0x00000002
+ while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) &
+ TXX9_SICISR_TXALS))
+ ;
+ __raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO);
+}
+
+void __init txx9_sio_putchar_init(unsigned long baseaddr)
+{
+ early_txx9_sio_port = ioremap(baseaddr, 0x24);
+ txx9_prom_putchar = early_txx9_sio_putchar;
+}
+#endif /* CONFIG_EARLY_PRINTK */
+
/* wrappers */
void __init plat_mem_setup(void)
{
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