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OpenCloudOS-Kernel/arch/mips/loongson64/common/setup.c

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MIPS: Loongson: Split common loongson source code out To share common loongson source code between all of the loongson-based machines. there is a need to split it out of the fuloong-2e/ directory. at the same time, other according tuning is needed. the machine-specific parts are defined as macros in relative header file, pci.h, mem.h, machine.h. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-02 23:26:45 +08:00
/*
MIPS, CPUFREQ: Fix spelling of Institute. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-07-08 02:56:04 +08:00
* Copyright (C) 2007 Lemote Inc. & Institute of Computing Technology
MIPS: Loongson: Split common loongson source code out To share common loongson source code between all of the loongson-based machines. there is a need to split it out of the fuloong-2e/ directory. at the same time, other according tuning is needed. the machine-specific parts are defined as macros in relative header file, pci.h, mem.h, machine.h. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-02 23:26:45 +08:00
* Author: Fuxin Zhang, zhangfx@lemote.com
*
MIPS: Whitespace cleanup. Having received another series of whitespace patches I decided to do this once and for all rather than dealing with this kind of patches trickling in forever. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-01-22 19:59:30 +08:00
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
MIPS: Loongson: Split common loongson source code out To share common loongson source code between all of the loongson-based machines. there is a need to split it out of the fuloong-2e/ directory. at the same time, other according tuning is needed. the machine-specific parts are defined as macros in relative header file, pci.h, mem.h, machine.h. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-02 23:26:45 +08:00
* option) any later version.
*/
#include <linux/module.h>
#include <asm/wbflush.h>
MIPS: loongson: common: Setup: add a missing include Add a missing include to get rid of the following sparse warning: warning: symbol 'plat_mem_setup' was not declared. Should it be static? Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8530/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-20 05:52:47 +08:00
#include <asm/bootinfo.h>
MIPS: Loongson: Split common loongson source code out To share common loongson source code between all of the loongson-based machines. there is a need to split it out of the fuloong-2e/ directory. at the same time, other according tuning is needed. the machine-specific parts are defined as macros in relative header file, pci.h, mem.h, machine.h. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-02 23:26:45 +08:00
#include <loongson.h>
#ifdef CONFIG_VT
#include <linux/console.h>
#include <linux/screen_info.h>
#endif
static void wbflush_loongson(void)
{
asm(".set\tpush\n\t"
".set\tnoreorder\n\t"
".set mips3\n\t"
"sync\n\t"
"nop\n\t"
".set\tpop\n\t"
".set mips0\n\t");
}
MIPS: Loongson 3: Add Loongson-3 SMP support IPI registers of Loongson-3 include IPI_SET, IPI_CLEAR, IPI_STATUS, IPI_EN and IPI_MAILBOX_BUF. Each bit of IPI_STATUS indicate a type of IPI and IPI_EN indicate whether the IPI is enabled. The sender write 1 to IPI_SET bits generate IPIs in IPI_STATUS, and receiver write 1 to bits of IPI_CLEAR to clear IPIs. IPI_MAILBOX_BUF are used to deliver more information about IPIs. Why we change code in arch/mips/loongson/common/setup.c? If without this change, when SMP configured, system cannot boot since it hang at printk() in cgroup_init_early(). The root cause is: console_trylock() \-->down_trylock(&console_sem) \-->raw_spin_unlock_irqrestore(&sem->lock, flags) \-->_raw_spin_unlock_irqrestore()(SMP/UP have different versions) \-->__raw_spin_unlock_irqrestore() (following is the SMP case) \-->do_raw_spin_unlock() \-->arch_spin_unlock() \-->nudge_writes() \-->mb() \-->wbflush() \-->__wbflush() In previous code __wbflush() is initialized in plat_mem_setup(), but cgroup_init_early() is called before plat_mem_setup(). Therefore, In this patch we make changes to avoid boot failure. Signed-off-by: Huacai Chen <chenhc@lemote.com> Signed-off-by: Hongliang Tao <taohl@lemote.com> Signed-off-by: Hua Yan <yanh@lemote.com> Tested-by: Alex Smith <alex.smith@imgtec.com> Reviewed-by: Alex Smith <alex.smith@imgtec.com> Cc: John Crispin <john@phrozen.org> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: linux-mips@linux-mips.org Cc: Fuxin Zhang <zhangfx@lemote.com> Cc: Zhangjin Wu <wuzhangjin@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/6638 Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-03-21 18:44:08 +08:00
void (*__wbflush)(void) = wbflush_loongson;
EXPORT_SYMBOL(__wbflush);
MIPS: Loongson: Split common loongson source code out To share common loongson source code between all of the loongson-based machines. there is a need to split it out of the fuloong-2e/ directory. at the same time, other according tuning is needed. the machine-specific parts are defined as macros in relative header file, pci.h, mem.h, machine.h. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-02 23:26:45 +08:00
void __init plat_mem_setup(void)
{
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
conswitchp = &vga_con;
screen_info = (struct screen_info) {
MIPS: Fixup screen_info struct initializations |arch/mips/sibyte/swarm/setup.c:153: | warning: large integer implicitly truncated to unsigned type The field was changed in d9b26352 aka ("x86, setup: Store the boot cursor state"). This patch changes the values back they way they were before this extra field got introduced. While here, the other two boards are also converted to C99 initializer. Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1137/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-04-22 04:36:47 +08:00
.orig_x = 0,
.orig_y = 25,
.orig_video_cols = 80,
.orig_video_lines = 25,
.orig_video_isVGA = VIDEO_TYPE_VGAC,
.orig_video_points = 16,
MIPS: Loongson: Split common loongson source code out To share common loongson source code between all of the loongson-based machines. there is a need to split it out of the fuloong-2e/ directory. at the same time, other according tuning is needed. the machine-specific parts are defined as macros in relative header file, pci.h, mem.h, machine.h. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-02 23:26:45 +08:00
};
#elif defined(CONFIG_DUMMY_CONSOLE)
conswitchp = &dummy_con;
#endif
#endif
}