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uncompress.h

/*
 * 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 <glonnon@ridgerun.com>
 *
 * Rewritten by:
 * Author: <source@mvista.com>
 * 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>

static u32 *uart;
static u32 *uart_info = (u32 *)(DAVINCI_UART_INFO);

/* 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, void * __iomem virt)
{
      uart = (u32 *)phys;
      uart_info[0] = phys;
      uart_info[1] = (u32)virt;
}

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

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

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

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

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()

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