mirror of https://gitee.com/openkylin/linux.git
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
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/*
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* arch/arm/mach-tegra/include/mach/uncompress.h
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*
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* Copyright (C) 2010 Google, Inc.
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*
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* Author:
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* Colin Cross <ccross@google.com>
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* Erik Gilling <konkers@google.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __MACH_TEGRA_UNCOMPRESS_H
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#define __MACH_TEGRA_UNCOMPRESS_H
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#include <linux/types.h>
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#include <linux/serial_reg.h>
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#include <mach/iomap.h>
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#if defined(CONFIG_TEGRA_DEBUG_UARTA)
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#define DEBUG_UART_BASE TEGRA_UARTA_BASE
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#elif defined(CONFIG_TEGRA_DEBUG_UARTB)
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#define DEBUG_UART_BASE TEGRA_UARTB_BASE
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#elif defined(CONFIG_TEGRA_DEBUG_UARTC)
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#define DEBUG_UART_BASE TEGRA_UARTC_BASE
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#elif defined(CONFIG_TEGRA_DEBUG_UARTD)
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#define DEBUG_UART_BASE TEGRA_UARTD_BASE
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#elif defined(CONFIG_TEGRA_DEBUG_UARTE)
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#define DEBUG_UART_BASE TEGRA_UARTE_BASE
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#else
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#define DEBUG_UART_BASE NULL
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#endif
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static void putc(int c)
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{
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volatile u8 *uart = (volatile u8 *)DEBUG_UART_BASE;
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int shift = 2;
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if (uart == NULL)
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return;
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while (!(uart[UART_LSR << shift] & UART_LSR_THRE))
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barrier();
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uart[UART_TX << shift] = c;
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}
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static inline void flush(void)
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{
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}
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static inline void arch_decomp_setup(void)
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{
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volatile u8 *uart = (volatile u8 *)DEBUG_UART_BASE;
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int shift = 2;
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if (uart == NULL)
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return;
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uart[UART_LCR << shift] |= UART_LCR_DLAB;
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uart[UART_DLL << shift] = 0x75;
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uart[UART_DLM << shift] = 0x0;
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uart[UART_LCR << shift] = 3;
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}
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static inline void arch_decomp_wdog(void)
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{
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}
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#endif
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