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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* arch/arm/mach-ixp4xx/include/mach/uncompress.h
*
* Copyright (C) 2002 Intel Corporation.
* Copyright (C) 2003-2004 MontaVista Software, Inc.
*/
#ifndef _ARCH_UNCOMPRESS_H_
#define _ARCH_UNCOMPRESS_H_
#include <asm/mach-types.h>
#include <linux/serial_reg.h>
#define IXP4XX_UART1_BASE_PHYS 0xc8000000
#define IXP4XX_UART2_BASE_PHYS 0xc8001000
#define TX_DONE (UART_LSR_TEMT|UART_LSR_THRE)
volatile u32* uart_base;
static inline void putc(int c)
{
/* Check THRE and TEMT bits before we transmit the character.
*/
while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE)
barrier();
*uart_base = c;
}
static void flush(void)
{
}
static __inline__ void __arch_decomp_setup(unsigned long arch_id)
{
/*
* Some boards are using UART2 as console
*/
if (machine_is_adi_coyote() || machine_is_gtwx5715() ||
machine_is_gateway7001() || machine_is_wg302v2() ||
machine_is_devixp() || machine_is_miccpt() || machine_is_mic256())
uart_base = (volatile u32*) IXP4XX_UART2_BASE_PHYS;
else
uart_base = (volatile u32*) IXP4XX_UART1_BASE_PHYS;
}
/*
* arch_id is a variable in decompress_kernel()
*/
#define arch_decomp_setup() __arch_decomp_setup(arch_id)
#endif
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