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52 lines
1.1 KiB
52 lines
1.1 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* arch/arm/mach-ixp4xx/include/mach/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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#ifndef _ARCH_UNCOMPRESS_H_ |
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#define _ARCH_UNCOMPRESS_H_ |
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#include "ixp4xx-regs.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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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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* Some boards are using UART2 as console |
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*/ |
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if (machine_is_adi_coyote() || machine_is_gtwx5715() || |
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machine_is_gateway7001() || machine_is_wg302v2() || |
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machine_is_devixp() || machine_is_miccpt() || machine_is_mic256()) |
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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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#endif
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