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-netx/include/mach/uncompress.h | 76 ++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 arch/arm/mach-netx/include/mach/uncompress.h (limited to 'arch/arm/mach-netx/include/mach/uncompress.h') diff --git a/arch/arm/mach-netx/include/mach/uncompress.h b/arch/arm/mach-netx/include/mach/uncompress.h new file mode 100644 index 00000000..84f91284 --- /dev/null +++ b/arch/arm/mach-netx/include/mach/uncompress.h @@ -0,0 +1,76 @@ +/* + * arch/arm/mach-netx/include/mach/uncompress.h + * + * Copyright (C) 2005 Sascha Hauer , Pengutronix + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * 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 + */ + +/* + * The following code assumes the serial port has already been + * initialized by the bootloader. We search for the first enabled + * port in the most probable order. If you didn't setup a port in + * your bootloader then nothing will appear (which might be desired). + * + * This does not append a newline + */ + +#define REG(x) (*(volatile unsigned long *)(x)) + +#define UART1_BASE 0x100a00 +#define UART2_BASE 0x100a80 + +#define UART_DR 0x0 + +#define UART_CR 0x14 +#define CR_UART_EN (1<<0) + +#define UART_FR 0x18 +#define FR_BUSY (1<<3) +#define FR_TXFF (1<<5) + +static void putc(char c) +{ + unsigned long base; + + if (REG(UART1_BASE + UART_CR) & CR_UART_EN) + base = UART1_BASE; + else if (REG(UART2_BASE + UART_CR) & CR_UART_EN) + base = UART2_BASE; + else + return; + + while (REG(base + UART_FR) & FR_TXFF); + REG(base + UART_DR) = c; +} + +static inline void flush(void) +{ + unsigned long base; + + if (REG(UART1_BASE + UART_CR) & CR_UART_EN) + base = UART1_BASE; + else if (REG(UART2_BASE + UART_CR) & CR_UART_EN) + base = UART2_BASE; + else + return; + + while (REG(base + UART_FR) & FR_BUSY); +} + +/* + * nothing to do + */ +#define arch_decomp_setup() +#define arch_decomp_wdog() -- cgit v1.2.3