| /* 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 "ixp4xx-regs.h" |
| #include <asm/mach-types.h> |
| #include <linux/serial_reg.h> |
| |
| #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 |