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50 lines
1.0 KiB
50 lines
1.0 KiB
/*
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* arch/arm/mach-sa1100/include/mach/uncompress.h
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*
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* (C) 1999 Nicolas Pitre <nico@fluxnic.net>
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*
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* Reorganised to be machine independent.
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*/
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#include "hardware.h"
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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. We search for the first enabled
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* port in the most probable order. If you didn't setup a port in
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* your bootloader then nothing will appear (which might be desired).
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*/
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#define UART(x) (*(volatile unsigned long *)(serial_port + (x)))
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static void putc(int c)
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{
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unsigned long serial_port;
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do {
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serial_port = _Ser3UTCR0;
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if (UART(UTCR3) & UTCR3_TXE) break;
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serial_port = _Ser1UTCR0;
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if (UART(UTCR3) & UTCR3_TXE) break;
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serial_port = _Ser2UTCR0;
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if (UART(UTCR3) & UTCR3_TXE) break;
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return;
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} while (0);
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/* wait for space in the UART's transmitter */
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while (!(UART(UTSR1) & UTSR1_TNF))
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barrier();
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/* send the character out. */
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UART(UTDR) = c;
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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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/*
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* Nothing to do for these
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*/
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#define arch_decomp_setup()
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#define arch_decomp_wdog()
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