uncompress.h

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/*
 * Serial port stubs for kernel decompress status messages
 *
 * Initially based on:
 * arch/arm/plat-omap/include/mach/uncompress.h
 *
 * Original copyrights follow.
 *
 * Copyright (C) 2000 RidgeRun, Inc.
 * Author: Greg Lonnon <[email protected]>
 *
 * Rewritten by:
 * Author: <[email protected]>
 * 2004 (c) MontaVista Software, Inc.
 *
 * This file is licensed under the terms of the GNU General Public License
 * version 2. This program is licensed "as is" without any warranty of any
 * kind, whether express or implied.
 */

#include <linux/types.h>
#include <linux/serial_reg.h>

#include <asm/mach-types.h>

#include <mach/serial.h>

#define IOMEM(x)    ((void __force __iomem *)(x))

u32 *uart;

/* PORT_16C550A, in polled non-fifo mode */
static void putc(char c)
{
    while (!(uart[UART_LSR] & UART_LSR_THRE))
        barrier();
    uart[UART_TX] = c;
}

static inline void flush(void)
{
    while (!(uart[UART_LSR] & UART_LSR_THRE))
        barrier();
}

static inline void set_uart_info(u32 phys)
{
    uart = (u32 *)phys;
}

#define _DEBUG_LL_ENTRY(machine, phys)              \
    {                           \
        if (machine_is_##machine()) {           \
            set_uart_info(phys);            \
            break;                  \
        }                       \
    }

#define DEBUG_LL_DAVINCI(machine, port)             \
    _DEBUG_LL_ENTRY(machine, DAVINCI_UART##port##_BASE)

#define DEBUG_LL_DA8XX(machine, port)               \
    _DEBUG_LL_ENTRY(machine, DA8XX_UART##port##_BASE)

#define DEBUG_LL_TNETV107X(machine, port)           \
    _DEBUG_LL_ENTRY(machine, TNETV107X_UART##port##_BASE)

static inline void __arch_decomp_setup(unsigned long arch_id)
{
    /*
     * Initialize the port based on the machine ID from the bootloader.
     * Note that we're using macros here instead of switch statement
     * as machine_is functions are optimized out for the boards that
     * are not selected.
     */
    do {
        /* Davinci boards */
        DEBUG_LL_DAVINCI(davinci_evm,       0);
        DEBUG_LL_DAVINCI(sffsdr,        0);
        DEBUG_LL_DAVINCI(neuros_osd2,       0);
        DEBUG_LL_DAVINCI(davinci_dm355_evm, 0);
        DEBUG_LL_DAVINCI(dm355_leopard,     0);
        DEBUG_LL_DAVINCI(davinci_dm6467_evm,    0);
        DEBUG_LL_DAVINCI(davinci_dm365_evm, 0);

        /* DA8xx boards */
        DEBUG_LL_DA8XX(davinci_da830_evm,   2);
        DEBUG_LL_DA8XX(davinci_da850_evm,   2);
        DEBUG_LL_DA8XX(mityomapl138,        1);
        DEBUG_LL_DA8XX(omapl138_hawkboard,  2);

        /* TNETV107x boards */
        DEBUG_LL_TNETV107X(tnetv107x,       1);
    } while (0);
}

#define arch_decomp_setup() __arch_decomp_setup(arch_id)
#define arch_decomp_wdog()