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[MIPS] TXx9: Support early_printk

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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>
This commit is contained in:
Atsushi Nemoto
2008-07-29 22:10:08 +09:00
committed by Ralf Baechle
parent 7779a5e07d
commit e352953ce0
6 changed files with 46 additions and 16 deletions
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31
arch/mips/txx9/generic/setup.c
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@@ -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)
{