mirror of
https://github.com/torvalds/linux.git
synced 2024-12-22 10:56:40 +00:00
a09e64fbc0
This just leaves include/asm-arm/plat-* to deal with. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
/*
|
|
* arch/arm/mach-ep93xx/include/mach/uncompress.h
|
|
*
|
|
* Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or (at
|
|
* your option) any later version.
|
|
*/
|
|
|
|
#include <mach/ep93xx-regs.h>
|
|
|
|
static unsigned char __raw_readb(unsigned int ptr)
|
|
{
|
|
return *((volatile unsigned char *)ptr);
|
|
}
|
|
|
|
static unsigned int __raw_readl(unsigned int ptr)
|
|
{
|
|
return *((volatile unsigned int *)ptr);
|
|
}
|
|
|
|
static void __raw_writeb(unsigned char value, unsigned int ptr)
|
|
{
|
|
*((volatile unsigned char *)ptr) = value;
|
|
}
|
|
|
|
static void __raw_writel(unsigned int value, unsigned int ptr)
|
|
{
|
|
*((volatile unsigned int *)ptr) = value;
|
|
}
|
|
|
|
|
|
#define PHYS_UART1_DATA 0x808c0000
|
|
#define PHYS_UART1_FLAG 0x808c0018
|
|
#define UART1_FLAG_TXFF 0x20
|
|
|
|
static inline void putc(int c)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 1000; i++) {
|
|
/* Transmit fifo not full? */
|
|
if (!(__raw_readb(PHYS_UART1_FLAG) & UART1_FLAG_TXFF))
|
|
break;
|
|
}
|
|
|
|
__raw_writeb(c, PHYS_UART1_DATA);
|
|
}
|
|
|
|
static inline void flush(void)
|
|
{
|
|
}
|
|
|
|
|
|
/*
|
|
* Some bootloaders don't turn off DMA from the ethernet MAC before
|
|
* jumping to linux, which means that we might end up with bits of RX
|
|
* status and packet data scribbled over the uncompressed kernel image.
|
|
* Work around this by resetting the ethernet MAC before we uncompress.
|
|
*/
|
|
#define PHYS_ETH_SELF_CTL 0x80010020
|
|
#define ETH_SELF_CTL_RESET 0x00000001
|
|
|
|
static void ethernet_reset(void)
|
|
{
|
|
unsigned int v;
|
|
|
|
/* Reset the ethernet MAC. */
|
|
v = __raw_readl(PHYS_ETH_SELF_CTL);
|
|
__raw_writel(v | ETH_SELF_CTL_RESET, PHYS_ETH_SELF_CTL);
|
|
|
|
/* Wait for reset to finish. */
|
|
while (__raw_readl(PHYS_ETH_SELF_CTL) & ETH_SELF_CTL_RESET)
|
|
;
|
|
}
|
|
|
|
|
|
static void arch_decomp_setup(void)
|
|
{
|
|
ethernet_reset();
|
|
}
|
|
|
|
#define arch_decomp_wdog()
|