MIPS: Alchemy: prom_putchar is board dependent

[safe/jmp/linux-2.6] / arch / mips / include / asm / mach-au1x00 / au1000.h

diff --git a/arch/mips/include/asm/mach-au1x00/au1000.h b/arch/mips/include/asm/mach-au1x00/au1000.h
index c2e2339..e11756d 100644 (file)
--- a/arch/mips/include/asm/mach-au1x00/au1000.h
+++ b/arch/mips/include/asm/mach-au1x00/au1000.h
@@ -161,6 +161,25 @@ static inline int alchemy_get_cputype(void)
        return ALCHEMY_CPU_UNKNOWN;
 }
 
+static inline void alchemy_uart_putchar(u32 uart_phys, u8 c)
+{
+       void __iomem *base = (void __iomem *)KSEG1ADDR(uart_phys);
+       int timeout, i;
+
+       /* check LSR TX_EMPTY bit */
+       timeout = 0xffffff;
+       do {
+               if (__raw_readl(base + 0x1c) & 0x20)
+                       break;
+               /* slow down */
+               for (i = 10000; i; i--)
+                       asm volatile ("nop");
+       } while (--timeout);
+
+       __raw_writel(c, base + 0x04);   /* tx */
+       wmb();
+}
+
 /* arch/mips/au1000/common/clocks.c */
 extern void set_au1x00_speed(unsigned int new_freq);
 extern unsigned int get_au1x00_speed(void);