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/*
* arch/arm/mach-tegra/include/mach/uncompress.h
*
* Copyright (C) 2010 Google, Inc.
* Copyright (C) 2011 Google, Inc.
*
* Author:
* Colin Cross <ccross@google.com>
* Erik Gilling <konkers@google.com>
* Doug Anderson <dianders@chromium.org>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifndef __MACH_TEGRA_UNCOMPRESS_H
#define __MACH_TEGRA_UNCOMPRESS_H
#include <linux/types.h>
#include <linux/serial_reg.h>
#include <mach/iomap.h>
#define DEBUG_UART_SHIFT 2
volatile u8 *uart;
static void putc(int c)
{
if (uart == NULL)
return;
while (!(uart[UART_LSR << DEBUG_UART_SHIFT] & UART_LSR_THRE))
barrier();
uart[UART_TX << DEBUG_UART_SHIFT] = c;
}
static inline void flush(void)
{
}
static inline void arch_decomp_setup(void)
{
volatile u32 *apb_misc = (volatile u32 *)TEGRA_APB_MISC_BASE;
u32 chip, div;
uart = (volatile u8 *)TEGRA_DEBUG_UART_BASE;
if (uart == NULL)
return;
chip = (apb_misc[0x804 / 4] >> 8) & 0xff;
if (chip == 0x20)
div = 0x0075;
else
div = 0x00dd;
uart[UART_LCR << DEBUG_UART_SHIFT] |= UART_LCR_DLAB;
uart[UART_DLL << DEBUG_UART_SHIFT] = div & 0xff;
uart[UART_DLM << DEBUG_UART_SHIFT] = div >> 8;
uart[UART_LCR << DEBUG_UART_SHIFT] = 3;
}
static inline void arch_decomp_wdog(void)
{
}
#endif
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