uncompress.h

来自「LINUX 2.6.17.4的源码」· C头文件 代码 · 共 36 行

/*
 * linux/include/asm-arm/arch-cl7500/uncompress.h
 *
 * Copyright (C) 1999, 2000 Nexus Electronics Ltd.
 */
#define BASE 0x03010000
#define SERBASE (BASE + (0x2f8 << 2))

static inline void putc(char c)
{
	while (!(*((volatile unsigned int *)(SERBASE + 0x14)) & 0x20))
		barrier();

	*((volatile unsigned int *)(SERBASE)) = c;
}

static inline void flush(void)
{
}

static __inline__ void arch_decomp_setup(void)
{
	int baud = 3686400 / (9600 * 32);

	*((volatile unsigned int *)(SERBASE + 0xC)) = 0x80;
	*((volatile unsigned int *)(SERBASE + 0x0)) = baud & 0xff;
	*((volatile unsigned int *)(SERBASE + 0x4)) = (baud & 0xff00) >> 8;
	*((volatile unsigned int *)(SERBASE + 0xC)) = 3; /* 8 bits */
	*((volatile unsigned int *)(SERBASE + 0x10)) = 3; /* DTR, RTS */
}

/*
 * nothing to do
 */
#define arch_decomp_wdog()