#include <asm/io.h>
#include <bcm63xx_regs.h>

static unsigned int bcm_uart0_reg(void)
{
        unsigned int tmp = readl(BCM_6338_PERF_BASE);
        unsigned int cpu_id = (tmp & REV_CHIPID_MASK) >> REV_CHIPID_SHIFT;

        switch (cpu_id) {
        case BCM6338_CPU_ID:
        case BCM6345_CPU_ID:
        case BCM6348_CPU_ID:
                return BCM_6338_UART0_BASE;
        case BCM6358_CPU_ID:
                return BCM_6358_UART0_BASE;
        default:
                return 0;
        }
}

static inline unsigned int bcm_uart0_readl(unsigned int reg)
{
        return readl(bcm_uart0_reg() + reg);
}

static inline void bcm_uart0_writel(unsigned int val, unsigned int reg)
{
        writel(val, bcm_uart0_reg() + reg);
}

static void __init wait_xfered(void)
{
        unsigned int val;

        /* wait for any previous char to be transmitted */
        do {
                val = bcm_uart0_readl(UART_IR_REG);
                if (val & UART_IR_STAT(UART_IR_TXEMPTY))
                        break;
        } while (1);
}

void __init putc(char c)
{
        wait_xfered();
        bcm_uart0_writel(c, UART_FIFO_REG);
        wait_xfered();
}