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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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a081568d70
As per the corresponding change to the serial drivers, arrange for ARM decompressors to give CRLF. Move the common putstr code into misc.c such that machines only need to supply "putc" and "flush" functions. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
/*
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* include/asm-arm/arch-ixp4xx/uncompress.h
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*
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* Copyright (C) 2002 Intel Corporation.
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* Copyright (C) 2003-2004 MontaVista Software, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#ifndef _ARCH_UNCOMPRESS_H_
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#define _ARCH_UNCOMPRESS_H_
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#include <asm/hardware.h>
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#include <asm/mach-types.h>
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#include <linux/serial_reg.h>
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#define TX_DONE (UART_LSR_TEMT|UART_LSR_THRE)
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static volatile u32* uart_base;
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static inline void putc(int c)
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{
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/* Check THRE and TEMT bits before we transmit the character.
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*/
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while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE)
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barrier();
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*uart_base = c;
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}
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static void flush(void)
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{
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}
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static __inline__ void __arch_decomp_setup(unsigned long arch_id)
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{
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/*
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* Coyote and gtwx5715 only have UART2 connected
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*/
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if (machine_is_adi_coyote() || machine_is_gtwx5715())
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uart_base = (volatile u32*) IXP4XX_UART2_BASE_PHYS;
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else
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uart_base = (volatile u32*) IXP4XX_UART1_BASE_PHYS;
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}
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/*
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* arch_id is a variable in decompress_kernel()
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*/
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#define arch_decomp_setup() __arch_decomp_setup(arch_id)
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#define arch_decomp_wdog()
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#endif
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