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ec4a637d35
The uncompress code for zImage uses the UART to print status messages, this was hard coded to use UART2 for the U8500 platform. This patch checks at run time which platform it is run on. U5500 uses UART0 as console UART. Signed-off-by: Carl-Johan Irekvist <carl-johan.irekvist@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/*
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* Copyright (C) 2009 ST-Ericsson
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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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#ifndef __ASM_ARCH_UNCOMPRESS_H
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#define __ASM_ARCH_UNCOMPRESS_H
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#include <asm/setup.h>
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#include <asm/mach-types.h>
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#include <linux/io.h>
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#include <linux/amba/serial.h>
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#include <mach/hardware.h>
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static u32 ux500_uart_base;
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static void putc(const char c)
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{
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/* Do nothing if the UART is not enabled. */
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if (!(__raw_readb(ux500_uart_base + UART011_CR) & 0x1))
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return;
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if (c == '\n')
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putc('\r');
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while (__raw_readb(ux500_uart_base + UART01x_FR) & (1 << 5))
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barrier();
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__raw_writeb(c, ux500_uart_base + UART01x_DR);
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}
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static void flush(void)
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{
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if (!(__raw_readb(ux500_uart_base + UART011_CR) & 0x1))
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return;
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while (__raw_readb(ux500_uart_base + UART01x_FR) & (1 << 3))
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barrier();
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}
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static inline void arch_decomp_setup(void)
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{
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if (machine_is_u8500())
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ux500_uart_base = U8500_UART2_BASE;
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else if (machine_is_u5500())
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ux500_uart_base = U5500_UART0_BASE;
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else /* not much can be done to help here */
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ux500_uart_base = U8500_UART2_BASE;
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}
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#define arch_decomp_wdog() /* nothing to do here */
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#endif /* __ASM_ARCH_UNCOMPRESS_H */
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