b632a30e8b
With ARCH_HAS_DECOMP_WDOG removed from arch/arm/boot/compressed/decompress.c, all the arch_decomp_wdog() definition at platform level is unneeded. Remmove it. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Jason Cooper <jason@lakedaemon.net>
88 lines
2.1 KiB
C
88 lines
2.1 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;
|
|
}
|
|
|
|
#if defined(CONFIG_EP93XX_EARLY_UART1)
|
|
#define UART_BASE EP93XX_UART1_PHYS_BASE
|
|
#elif defined(CONFIG_EP93XX_EARLY_UART2)
|
|
#define UART_BASE EP93XX_UART2_PHYS_BASE
|
|
#elif defined(CONFIG_EP93XX_EARLY_UART3)
|
|
#define UART_BASE EP93XX_UART3_PHYS_BASE
|
|
#else
|
|
#define UART_BASE EP93XX_UART1_PHYS_BASE
|
|
#endif
|
|
|
|
#define PHYS_UART_DATA (UART_BASE + 0x00)
|
|
#define PHYS_UART_FLAG (UART_BASE + 0x18)
|
|
#define UART_FLAG_TXFF 0x20
|
|
|
|
static inline void putc(int c)
|
|
{
|
|
/* Transmit fifo not full? */
|
|
while (__raw_readb(PHYS_UART_FLAG) & UART_FLAG_TXFF)
|
|
;
|
|
|
|
__raw_writeb(c, PHYS_UART_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();
|
|
}
|