forked from Minki/linux
4d2b7d4cb4
When CONFIG_DEBUG_ICEDCC is set, we don't use the platform specific putc() function, but use icedcc_putc() instead, so putc is unused and causes a compile time warning: In file included from ../arch/arm/boot/compressed/misc.c:28:0: arch/arm/mach-rpc/include/mach/uncompress.h:79:13: warning: 'putc' defined but not used [-Wunused-function] arch/arm/mach-w90x900/include/mach/uncompress.h:30:13: warning: 'putc' defined but not used [-Wunused-function] On most platforms, this does not happen, because putc is defined as 'static inline' so the compiler will automatically drop it when it's unused. This changes the remaining seven platforms to behave the same way. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
98 lines
2.2 KiB
C
98 lines
2.2 KiB
C
/*
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* Serial port stubs for kernel decompress status messages
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*
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* Initially based on:
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* arch/arm/plat-omap/include/mach/uncompress.h
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*
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* Original copyrights follow.
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*
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* Copyright (C) 2000 RidgeRun, Inc.
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* Author: Greg Lonnon <glonnon@ridgerun.com>
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*
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* Rewritten by:
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* Author: <source@mvista.com>
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* 2004 (c) MontaVista Software, Inc.
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*
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* This file is licensed under the terms of the GNU General Public License
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* version 2. This program is licensed "as is" without any warranty of any
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* kind, whether express or implied.
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*/
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#include <linux/types.h>
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#include <linux/serial_reg.h>
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#include <asm/mach-types.h>
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#include <mach/serial.h>
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#define IOMEM(x) ((void __force __iomem *)(x))
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u32 *uart;
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/* PORT_16C550A, in polled non-fifo mode */
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static inline void putc(char c)
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{
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if (!uart)
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return;
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while (!(uart[UART_LSR] & UART_LSR_THRE))
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barrier();
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uart[UART_TX] = c;
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}
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static inline void flush(void)
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{
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if (!uart)
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return;
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while (!(uart[UART_LSR] & UART_LSR_THRE))
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barrier();
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}
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static inline void set_uart_info(u32 phys)
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{
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uart = (u32 *)phys;
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}
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#define _DEBUG_LL_ENTRY(machine, phys) \
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{ \
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if (machine_is_##machine()) { \
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set_uart_info(phys); \
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break; \
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} \
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}
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#define DEBUG_LL_DAVINCI(machine, port) \
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_DEBUG_LL_ENTRY(machine, DAVINCI_UART##port##_BASE)
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#define DEBUG_LL_DA8XX(machine, port) \
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_DEBUG_LL_ENTRY(machine, DA8XX_UART##port##_BASE)
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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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* Initialize the port based on the machine ID from the bootloader.
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* Note that we're using macros here instead of switch statement
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* as machine_is functions are optimized out for the boards that
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* are not selected.
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*/
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do {
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/* Davinci boards */
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DEBUG_LL_DAVINCI(davinci_evm, 0);
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DEBUG_LL_DAVINCI(sffsdr, 0);
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DEBUG_LL_DAVINCI(neuros_osd2, 0);
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DEBUG_LL_DAVINCI(davinci_dm355_evm, 0);
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DEBUG_LL_DAVINCI(dm355_leopard, 0);
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DEBUG_LL_DAVINCI(davinci_dm6467_evm, 0);
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DEBUG_LL_DAVINCI(davinci_dm365_evm, 0);
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/* DA8xx boards */
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DEBUG_LL_DA8XX(davinci_da830_evm, 2);
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DEBUG_LL_DA8XX(davinci_da850_evm, 2);
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DEBUG_LL_DA8XX(mityomapl138, 1);
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DEBUG_LL_DA8XX(omapl138_hawkboard, 2);
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} while (0);
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}
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#define arch_decomp_setup() __arch_decomp_setup(arch_id)
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