77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/*
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* arch/arm/mach-mxs/include/mach/uncompress.h
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*
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* Copyright (C) 1999 ARM Limited
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* Copyright (C) Shane Nay (shane@minirl.com)
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* Copyright 2010 Freescale Semiconductor, Inc. All Rights Reserved.
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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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#ifndef __MACH_MXS_UNCOMPRESS_H__
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#define __MACH_MXS_UNCOMPRESS_H__
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#include <asm/mach-types.h>
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static unsigned long mxs_duart_base;
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#define MXS_DUART(x) (*(volatile unsigned long *)(mxs_duart_base + (x)))
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#define MXS_DUART_DR 0x00
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#define MXS_DUART_FR 0x18
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#define MXS_DUART_FR_TXFE (1 << 7)
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#define MXS_DUART_CR 0x30
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#define MXS_DUART_CR_UARTEN (1 << 0)
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/*
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* The following code assumes the serial port has already been
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* initialized by the bootloader. If it's not, the output is
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* simply discarded.
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*/
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static void putc(int ch)
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{
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if (!mxs_duart_base)
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return;
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if (!(MXS_DUART(MXS_DUART_CR) & MXS_DUART_CR_UARTEN))
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return;
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while (!(MXS_DUART(MXS_DUART_FR) & MXS_DUART_FR_TXFE))
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barrier();
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MXS_DUART(MXS_DUART_DR) = ch;
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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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#define MX23_DUART_BASE_ADDR 0x80070000
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#define MX28_DUART_BASE_ADDR 0x80074000
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static inline void __arch_decomp_setup(unsigned long arch_id)
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{
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switch (arch_id) {
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case MACH_TYPE_MX23EVK:
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mxs_duart_base = MX23_DUART_BASE_ADDR;
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break;
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case MACH_TYPE_MX28EVK:
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mxs_duart_base = MX28_DUART_BASE_ADDR;
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break;
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default:
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break;
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}
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}
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#define arch_decomp_setup() __arch_decomp_setup(arch_id)
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#define arch_decomp_wdog()
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#endif /* __MACH_MXS_UNCOMPRESS_H__ */
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