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1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
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2 | /* |
| 3 | * arch/arm/mach-w90x900/include/mach/uncompress.h |
| 4 | * |
| 5 | * Copyright (c) 2008 Nuvoton technology corporation |
| 6 | * All rights reserved. |
| 7 | * |
| 8 | * Wan ZongShun <mcuos.com@gmail.com> |
| 9 | * |
| 10 | * Based on arch/arm/mach-s3c2410/include/mach/uncompress.h |
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11 | */ |
| 12 | |
| 13 | #ifndef __ASM_ARCH_UNCOMPRESS_H |
| 14 | #define __ASM_ARCH_UNCOMPRESS_H |
| 15 | |
| 16 | /* Defines for UART registers */ |
| 17 | |
| 18 | #include <mach/regs-serial.h> |
| 19 | #include <mach/map.h> |
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20 | #include <linux/serial_reg.h> |
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21 | |
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22 | #define TX_DONE (UART_LSR_TEMT | UART_LSR_THRE) |
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23 | static volatile u32 * const uart_base = (u32 *)UART0_PA; |
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24 | |
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25 | static inline void putc(int ch) |
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26 | { |
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27 | /* Check THRE and TEMT bits before we transmit the character. |
| 28 | */ |
| 29 | while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE) |
| 30 | barrier(); |
| 31 | |
| 32 | *uart_base = ch; |
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33 | } |
| 34 | |
| 35 | static inline void flush(void) |
| 36 | { |
| 37 | } |
| 38 | |
| 39 | static void arch_decomp_setup(void) |
| 40 | { |
| 41 | } |
| 42 | |
| 43 | #endif/* __ASM_W90X900_UNCOMPRESS_H */ |
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