diff options
| author | Atsushi Nemoto <anemo@mba.ocn.ne.jp> | 2008-07-29 22:10:08 +0900 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2008-07-30 21:54:41 +0100 |
| commit | e352953ce00bb870124e9054dbbbda2262f9269c (patch) | |
| tree | 76297cc5749b91bec76d75f4520d88add8ca3efc /arch/mips/txx9/generic/setup.c | |
| parent | 7779a5e07d33fe316fe468e7afe7975fb686a831 (diff) | |
[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.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c index 94ce1a5c38a4..1bc57d0f4c5c 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) { |