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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
*/
#include <asm/mach-types.h>
static inline unsigned int __raw_readl(unsigned int ptr)
{
return *((volatile unsigned int *)ptr);
}
static inline void __raw_writeb(unsigned char value, unsigned int ptr)
{
*((volatile unsigned char *)ptr) = value;
}
static inline void __raw_writel(unsigned int value, unsigned int ptr)
{
*((volatile unsigned int *)ptr) = value;
}
/*
* 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 inline void ep93xx_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)
;
}
#define TS72XX_WDT_CONTROL_PHYS_BASE 0x23800000
#define TS72XX_WDT_FEED_PHYS_BASE 0x23c00000
#define TS72XX_WDT_FEED_VAL 0x05
static inline void __maybe_unused ts72xx_watchdog_disable(void)
{
__raw_writeb(TS72XX_WDT_FEED_VAL, TS72XX_WDT_FEED_PHYS_BASE);
__raw_writeb(0, TS72XX_WDT_CONTROL_PHYS_BASE);
}
static inline void ep93xx_decomp_setup(void)
{
if (machine_is_ts72xx())
ts72xx_watchdog_disable();
if (machine_is_edb9301() ||
machine_is_edb9302() ||
machine_is_edb9302a() ||
machine_is_edb9302a() ||
machine_is_edb9307() ||
machine_is_edb9307a() ||
machine_is_edb9307a() ||
machine_is_edb9312() ||
machine_is_edb9315() ||
machine_is_edb9315a() ||
machine_is_edb9315a() ||
machine_is_ts72xx() ||
machine_is_bk3() ||
machine_is_vision_ep9307())
ep93xx_ethernet_reset();
}
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