From 849369d6c66d3054688672f97d31fceb8e8230fb Mon Sep 17 00:00:00 2001 From: root Date: Fri, 25 Dec 2015 04:40:36 +0000 Subject: initial_commit --- arch/arm/mach-at91/include/mach/uncompress.h | 76 ++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 arch/arm/mach-at91/include/mach/uncompress.h (limited to 'arch/arm/mach-at91/include/mach/uncompress.h') diff --git a/arch/arm/mach-at91/include/mach/uncompress.h b/arch/arm/mach-at91/include/mach/uncompress.h new file mode 100644 index 00000000..18bdcdeb --- /dev/null +++ b/arch/arm/mach-at91/include/mach/uncompress.h @@ -0,0 +1,76 @@ +/* + * arch/arm/mach-at91/include/mach/uncompress.h + * + * Copyright (C) 2003 SAN People + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __ASM_ARCH_UNCOMPRESS_H +#define __ASM_ARCH_UNCOMPRESS_H + +#include +#include + +#if defined(CONFIG_AT91_EARLY_DBGU) +#define UART_OFFSET (AT91_DBGU + AT91_BASE_SYS) +#elif defined(CONFIG_AT91_EARLY_USART0) +#define UART_OFFSET AT91_USART0 +#elif defined(CONFIG_AT91_EARLY_USART1) +#define UART_OFFSET AT91_USART1 +#elif defined(CONFIG_AT91_EARLY_USART2) +#define UART_OFFSET AT91_USART2 +#elif defined(CONFIG_AT91_EARLY_USART3) +#define UART_OFFSET AT91_USART3 +#elif defined(CONFIG_AT91_EARLY_USART4) +#define UART_OFFSET AT91_USART4 +#elif defined(CONFIG_AT91_EARLY_USART5) +#define UART_OFFSET AT91_USART5 +#endif + +/* + * The following code assumes the serial port has already been + * initialized by the bootloader. If you didn't setup a port in + * your bootloader then nothing will appear (which might be desired). + * + * This does not append a newline + */ +static void putc(int c) +{ +#ifdef UART_OFFSET + void __iomem *sys = (void __iomem *) UART_OFFSET; /* physical address */ + + while (!(__raw_readl(sys + ATMEL_US_CSR) & ATMEL_US_TXRDY)) + barrier(); + __raw_writel(c, sys + ATMEL_US_THR); +#endif +} + +static inline void flush(void) +{ +#ifdef UART_OFFSET + void __iomem *sys = (void __iomem *) UART_OFFSET; /* physical address */ + + /* wait for transmission to complete */ + while (!(__raw_readl(sys + ATMEL_US_CSR) & ATMEL_US_TXEMPTY)) + barrier(); +#endif +} + +#define arch_decomp_setup() + +#define arch_decomp_wdog() + +#endif -- cgit v1.2.3