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ec845a498a
Signed-off-by: popcornmix <popcornmix@gmail.com> Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/*
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* arch/arm/mach-bcn2708/include/mach/uncompress.h
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*
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* Copyright (C) 2010 Broadcom
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* Copyright (C) 2003 ARM Limited
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/io.h>
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#include <linux/amba/serial.h>
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#include <mach/platform.h>
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#define UART_BAUD 115200
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#define BCM2708_UART_DR __io(UART0_BASE + UART01x_DR)
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#define BCM2708_UART_FR __io(UART0_BASE + UART01x_FR)
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#define BCM2708_UART_IBRD __io(UART0_BASE + UART011_IBRD)
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#define BCM2708_UART_FBRD __io(UART0_BASE + UART011_FBRD)
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#define BCM2708_UART_LCRH __io(UART0_BASE + UART011_LCRH)
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#define BCM2708_UART_CR __io(UART0_BASE + UART011_CR)
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/*
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* This does not append a newline
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*/
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static inline void putc(int c)
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{
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while (__raw_readl(BCM2708_UART_FR) & UART01x_FR_TXFF)
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barrier();
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__raw_writel(c, BCM2708_UART_DR);
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}
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static inline void flush(void)
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{
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int fr;
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do {
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fr = __raw_readl(BCM2708_UART_FR);
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barrier();
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} while ((fr & (UART011_FR_TXFE | UART01x_FR_BUSY)) != UART011_FR_TXFE);
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}
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static inline void arch_decomp_setup(void)
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{
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int temp, div, rem, frac;
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temp = 16 * UART_BAUD;
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div = UART0_CLOCK / temp;
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rem = UART0_CLOCK % temp;
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temp = (8 * rem) / UART_BAUD;
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frac = (temp >> 1) + (temp & 1);
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/* Make sure the UART is disabled before we start */
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__raw_writel(0, BCM2708_UART_CR);
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/* Set the baud rate */
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__raw_writel(div, BCM2708_UART_IBRD);
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__raw_writel(frac, BCM2708_UART_FBRD);
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/* Set the UART to 8n1, FIFO enabled */
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__raw_writel(UART01x_LCRH_WLEN_8 | UART01x_LCRH_FEN, BCM2708_UART_LCRH);
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/* Enable the UART */
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__raw_writel(UART01x_CR_UARTEN | UART011_CR_TXE | UART011_CR_RXE,
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BCM2708_UART_CR);
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}
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/*
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* nothing to do
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*/
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#define arch_decomp_wdog()
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