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[loongson-PATCH-v2 09/23] split the loongson-specific part out

To: linux-mips@linux-mips.org, Ralf Baechle <ralf@linux-mips.org>
Subject: [loongson-PATCH-v2 09/23] split the loongson-specific part out
From: wuzhangjin@gmail.com
Date: Wed, 27 May 2009 03:05:56 +0800
Cc: Wu Zhangjin <wuzj@lemote.com>, Yan Hua <yanh@lemote.com>, Philippe Vachon <philippe@cowpig.ca>, Zhang Le <r0bertz@gentoo.org>, Zhang Fuxin <zhangfx@lemote.com>, loongson-dev <loongson-dev@googlegroups.com>, Nicholas Mc Guire <der.herr@hofr.at>, Liu Junliang <liujl@lemote.com>, Erwan Lerale <erwan@thiscow.com>, Wu Zhangjin <wuzhangjin@gmail.com>
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In-reply-to: <cover.1243362545.git.wuzj@lemote.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <cover.1243362545.git.wuzj@lemote.com>
Sender: linux-mips-bounce@linux-mips.org
From: Wu Zhangjin <wuzj@lemote.com>

for sharing lots of loongson-specific source code among loongson-based
machines, there is a need to split the loongson-specific part out to a
common/ directory.

and the machine-specific files are put in the machine-name/ directory.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
---
 arch/mips/Kconfig                              |   52 +++++-------
 arch/mips/Makefile                             |    5 +-
 arch/mips/include/asm/mach-loongson/loongson.h |   14 +++-
 arch/mips/loongson/Kconfig                     |   31 +++++++
 arch/mips/loongson/Makefile                    |   11 +++
 arch/mips/loongson/common/Makefile             |   20 +++++
 arch/mips/loongson/common/bonito-irq.c         |   69 +++++++++++++++
 arch/mips/loongson/common/cmdline.c            |   80 +++++++++++++++++
 arch/mips/loongson/common/early_printk.c       |   28 ++++++
 arch/mips/loongson/common/init.c               |   40 +++++++++
 arch/mips/loongson/common/irq.c                |  109 ++++++++++++++++++++++++
 arch/mips/loongson/common/mem.c                |   40 +++++++++
 arch/mips/loongson/common/misc.c               |   15 +++
 arch/mips/loongson/common/pci.c                |  101 ++++++++++++++++++++++
 arch/mips/loongson/common/reset.c              |   38 ++++++++
 arch/mips/loongson/common/rtc.c                |   54 ++++++++++++
 arch/mips/loongson/common/setup.c              |   74 ++++++++++++++++
 arch/mips/loongson/common/time.c               |   27 ++++++
 arch/mips/loongson/fuloong-2e/Makefile         |   17 +---
 arch/mips/loongson/fuloong-2e/bonito-irq.c     |   69 ---------------
 arch/mips/loongson/fuloong-2e/cmdline.c        |   77 -----------------
 arch/mips/loongson/fuloong-2e/early_printk.c   |   28 ------
 arch/mips/loongson/fuloong-2e/init.c           |   40 ---------
 arch/mips/loongson/fuloong-2e/irq.c            |   88 +------------------
 arch/mips/loongson/fuloong-2e/mem.c            |   40 ---------
 arch/mips/loongson/fuloong-2e/misc.c           |   15 ---
 arch/mips/loongson/fuloong-2e/pci.c            |  102 ----------------------
 arch/mips/loongson/fuloong-2e/reset.c          |   36 +++------
 arch/mips/loongson/fuloong-2e/rtc.c            |   55 ------------
 arch/mips/loongson/fuloong-2e/setup.c          |   74 ----------------
 arch/mips/loongson/fuloong-2e/time.c           |   27 ------
 31 files changed, 791 insertions(+), 685 deletions(-)
 create mode 100644 arch/mips/loongson/Kconfig
 create mode 100644 arch/mips/loongson/Makefile
 create mode 100644 arch/mips/loongson/common/Makefile
 create mode 100644 arch/mips/loongson/common/bonito-irq.c
 create mode 100644 arch/mips/loongson/common/cmdline.c
 create mode 100644 arch/mips/loongson/common/early_printk.c
 create mode 100644 arch/mips/loongson/common/init.c
 create mode 100644 arch/mips/loongson/common/irq.c
 create mode 100644 arch/mips/loongson/common/mem.c
 create mode 100644 arch/mips/loongson/common/misc.c
 create mode 100644 arch/mips/loongson/common/pci.c
 create mode 100644 arch/mips/loongson/common/reset.c
 create mode 100644 arch/mips/loongson/common/rtc.c
 create mode 100644 arch/mips/loongson/common/setup.c
 create mode 100644 arch/mips/loongson/common/time.c
 delete mode 100644 arch/mips/loongson/fuloong-2e/bonito-irq.c
 delete mode 100644 arch/mips/loongson/fuloong-2e/cmdline.c
 delete mode 100644 arch/mips/loongson/fuloong-2e/early_printk.c
 delete mode 100644 arch/mips/loongson/fuloong-2e/init.c
 delete mode 100644 arch/mips/loongson/fuloong-2e/mem.c
 delete mode 100644 arch/mips/loongson/fuloong-2e/misc.c
 delete mode 100644 arch/mips/loongson/fuloong-2e/pci.c
 delete mode 100644 arch/mips/loongson/fuloong-2e/rtc.c
 delete mode 100644 arch/mips/loongson/fuloong-2e/setup.c
 delete mode 100644 arch/mips/loongson/fuloong-2e/time.c

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 4a7e61f..33a3bc6 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -6,7 +6,7 @@ config MIPS
        select HAVE_ARCH_KGDB
        # Horrible source of confusion.  Die, die, die ...
        select EMBEDDED
-       select RTC_LIB if !LEMOTE_FULOONG2E
+       select RTC_LIB if !LOONGSON_SYSTEMS
 
 mainmenu "Linux/MIPS Kernel Configuration"
 
@@ -153,30 +153,15 @@ config LASAT
        select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
        select SYS_SUPPORTS_LITTLE_ENDIAN
 
-config LEMOTE_FULOONG2E
-       bool "Lemote Fuloong(2e) mini-PC"
-       select ARCH_SPARSEMEM_ENABLE
-       select CEVT_R4K
-       select CSRC_R4K
-       select SYS_HAS_CPU_LOONGSON2
-       select DMA_NONCOHERENT
-       select BOOT_ELF32
-       select BOARD_SCACHE
-       select HAVE_STD_PC_SERIAL_PORT
-       select HW_HAS_PCI
-       select I8259
-       select ISA
-       select IRQ_CPU
-       select SYS_SUPPORTS_32BIT_KERNEL
-       select SYS_SUPPORTS_64BIT_KERNEL
-       select SYS_SUPPORTS_LITTLE_ENDIAN
-       select SYS_SUPPORTS_HIGHMEM
-       select SYS_HAS_EARLY_PRINTK
-       select GENERIC_ISA_DMA_SUPPORT_BROKEN
-       select CPU_HAS_WB
+config LOONGSON_SYSTEMS
+       bool "Loongson Based Machines"
        help
-         Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
-         an FPGA northbridge
+         This enables the support of Loongson based machines.
+
+         Loongson is a family of general-purpose MIPS-compatible CPUs.
+         developed at Institute of Computing Technology (ICT),
+         Chinese Academy of Sciences (CAS) in the People's Republic
+         of China. The chief architect is Professor Weiwu Hu.
 
 config MIPS_MALTA
        bool "MIPS Malta board"
@@ -642,6 +627,7 @@ source "arch/mips/sibyte/Kconfig"
 source "arch/mips/txx9/Kconfig"
 source "arch/mips/vr41xx/Kconfig"
 source "arch/mips/cavium-octeon/Kconfig"
+source "arch/mips/loongson/Kconfig"
 
 endmenu
 
@@ -1004,12 +990,10 @@ choice
        prompt "CPU type"
        default CPU_R4X00
 
-config CPU_LOONGSON2
-       bool "Loongson 2"
-       depends on SYS_HAS_CPU_LOONGSON2
-       select CPU_SUPPORTS_32BIT_KERNEL
-       select CPU_SUPPORTS_64BIT_KERNEL
-       select CPU_SUPPORTS_HIGHMEM
+config CPU_LOONGSON2E
+       bool "Loongson 2E"
+       depends on SYS_HAS_CPU_LOONGSON2E
+       select CPU_LOONGSON2
        help
          The Loongson 2E processor implements the MIPS III instruction set
          with many extensions.
@@ -1252,7 +1236,13 @@ config CPU_CAVIUM_OCTEON
 
 endchoice
 
-config SYS_HAS_CPU_LOONGSON2
+config CPU_LOONGSON2
+       bool
+       select CPU_SUPPORTS_32BIT_KERNEL
+       select CPU_SUPPORTS_64BIT_KERNEL
+       select CPU_SUPPORTS_HIGHMEM
+
+config SYS_HAS_CPU_LOONGSON2E
        bool
 
 config SYS_HAS_CPU_MIPS32_R1
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 55181a4..6801baa 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -307,9 +307,10 @@ load-$(CONFIG_WR_PPMC)             += 0xffffffff80100000
 #
 # lemote fulong mini-PC board
 #
-core-$(CONFIG_LEMOTE_FULOONG2E) +=arch/mips/loongson/fuloong-2e/
+core-$(CONFIG_LOONGSON_SYSTEMS) +=arch/mips/loongson/
+cflags-$(CONFIG_LOONGSON_SYSTEMS) += 
-I$(srctree)/arch/mips/include/asm/mach-loongson \
+                                       -mno-branch-likely
 load-$(CONFIG_LEMOTE_FULOONG2E) +=0xffffffff80100000
-cflags-$(CONFIG_LEMOTE_FULOONG2E) += 
-I$(srctree)/arch/mips/include/asm/mach-loongson
 
 #
 # MIPS Malta board
diff --git a/arch/mips/include/asm/mach-loongson/loongson.h 
b/arch/mips/include/asm/mach-loongson/loongson.h
index 5ad629e..29c9730 100644
--- a/arch/mips/include/asm/mach-loongson/loongson.h
+++ b/arch/mips/include/asm/mach-loongson/loongson.h
@@ -20,7 +20,7 @@
 /* loongson internal northbridge initialization */
 extern void bonito_irq_init(void);
 
-/* command line */
+/* command line arguments */
 extern unsigned long bus_clock, cpu_clock_freq;
 extern unsigned long memsize, highmemsize;
 
@@ -31,6 +31,18 @@ extern void loongson_reboot_setup(void);
 extern void __init prom_init_memory(void);
 extern void __init prom_init_cmdline(void);
 
+/* irq operation functions */
+extern void bonito_irqdispatch(void);
+extern void i8259_irqdispatch(void);
+extern void __init bonito_irq_init(void);
+extern void __init set_irq_trigger_mode(void);
+extern inline int mach_i8259_irq(void);
+extern inline void mach_irq_dispatch(unsigned int pending);
+
+/* machine-specific reboot/halt operation */
+extern void mach_prepare_reboot(void);
+extern void mach_prepare_shutdown(void);
+
 #define LOONGSON_REG(x) \
        (*(u32 *)((char *)CKSEG1ADDR(LOONGSON_REG_BASE) + (x)))
 #define LOONGSON_IRQ_BASE      32
diff --git a/arch/mips/loongson/Kconfig b/arch/mips/loongson/Kconfig
new file mode 100644
index 0000000..5874bf6
--- /dev/null
+++ b/arch/mips/loongson/Kconfig
@@ -0,0 +1,31 @@
+choice
+       prompt "Machine Type"
+       depends on LOONGSON_SYSTEMS
+
+config LEMOTE_FULOONG2E
+       bool "Lemote Fuloong(2e) mini-PC"
+       select ARCH_SPARSEMEM_ENABLE
+       select CEVT_R4K
+       select CSRC_R4K
+       select SYS_HAS_CPU_LOONGSON2E
+       select DMA_NONCOHERENT
+       select BOOT_ELF32
+       select BOARD_SCACHE
+       select HAVE_STD_PC_SERIAL_PORT
+       select HW_HAS_PCI
+       select I8259
+       select ISA
+       select IRQ_CPU
+       select SYS_SUPPORTS_32BIT_KERNEL
+       select SYS_SUPPORTS_64BIT_KERNEL
+       select SYS_SUPPORTS_LITTLE_ENDIAN
+       select SYS_SUPPORTS_HIGHMEM
+       select SYS_HAS_EARLY_PRINTK
+       select GENERIC_HARDIRQS_NO__DO_IRQ
+       select GENERIC_ISA_DMA_SUPPORT_BROKEN
+       select CPU_HAS_WB
+       help
+         Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
+         an FPGA northbridge
+
+endchoice
diff --git a/arch/mips/loongson/Makefile b/arch/mips/loongson/Makefile
new file mode 100644
index 0000000..cc9f1c8
--- /dev/null
+++ b/arch/mips/loongson/Makefile
@@ -0,0 +1,11 @@
+#
+# Common code for all Loongson based systems
+#
+
+obj-$(CONFIG_LOONGSON_SYSTEMS) += common/
+
+#
+# Lemote Fuloong mini-PC (Loongson 2E-based)
+#
+
+obj-$(CONFIG_LEMOTE_FULOONG2E) += fuloong-2e/
diff --git a/arch/mips/loongson/common/Makefile 
b/arch/mips/loongson/common/Makefile
new file mode 100644
index 0000000..79b2736
--- /dev/null
+++ b/arch/mips/loongson/common/Makefile
@@ -0,0 +1,20 @@
+#
+# Makefile for loongson based machines.
+#
+
+obj-y += setup.o init.o cmdline.o time.o reset.o irq.o \
+       pci.o bonito-irq.o mem.o misc.o
+
+#
+# Early printk support
+#
+obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
+
+#
+# Enable RTC Class support
+#
+# please enable CONFIG_RTC_DRV_CMOS
+#
+obj-$(CONFIG_RTC_DRV_CMOS) += rtc.o
+
+EXTRA_CFLAGS += -Werror
diff --git a/arch/mips/loongson/common/bonito-irq.c 
b/arch/mips/loongson/common/bonito-irq.c
new file mode 100644
index 0000000..1f43447
--- /dev/null
+++ b/arch/mips/loongson/common/bonito-irq.c
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
+ * Copyright (C) 2000, 2001 Ralf Baechle (ralf@gnu.org)
+ *
+ * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
+ * Author: Fuxin Zhang, zhangfx@lemote.com
+ *
+ *  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
+ *  option) any later version.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  You should have received a copy of the  GNU General Public License along
+ *  with this program; if not, write  to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/interrupt.h>
+
+#include <loongson.h>
+#include <machine.h>
+
+static inline void bonito_irq_enable(unsigned int irq)
+{
+       LOONGSON_INTENSET = (1 << (irq - LOONGSON_IRQ_BASE));
+       mmiowb();
+}
+
+static inline void bonito_irq_disable(unsigned int irq)
+{
+       LOONGSON_INTENCLR = (1 << (irq - LOONGSON_IRQ_BASE));
+       mmiowb();
+}
+
+static struct irq_chip bonito_irq_type = {
+       .name   = "bonito_irq",
+       .ack    = bonito_irq_disable,
+       .mask   = bonito_irq_disable,
+       .mask_ack = bonito_irq_disable,
+       .unmask = bonito_irq_enable,
+};
+
+static struct irqaction dma_timeout_irqaction = {
+       .handler        = no_action,
+       .name           = "dma_timeout",
+};
+
+void bonito_irq_init(void)
+{
+       u32 i;
+
+       for (i = LOONGSON_IRQ_BASE; i < LOONGSON_IRQ_BASE + 32; i++)
+               set_irq_chip_and_handler(i, &bonito_irq_type, handle_level_irq);
+
+       setup_irq(LOONGSON_DMATIMEOUT_IRQ, &dma_timeout_irqaction);
+}
diff --git a/arch/mips/loongson/common/cmdline.c 
b/arch/mips/loongson/common/cmdline.c
new file mode 100644
index 0000000..6f603ac
--- /dev/null
+++ b/arch/mips/loongson/common/cmdline.c
@@ -0,0 +1,80 @@
+/*
+ * Based on Ocelot Linux port, which is
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: jsun@mvista.com or jsun@junsun.net
+ *
+ * Copyright 2003 ICT CAS
+ * Author: Michael Guo <guoyi@ict.ac.cn>
+ *
+ * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
+ * Author: Fuxin Zhang, zhangfx@lemote.com
+ *
+ * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
+ * Author: Wu Zhangjin, wuzj@lemote.com
+ *
+ * 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
+ * option) any later version.
+ */
+
+#include <linux/bootmem.h>
+
+#include <asm/bootinfo.h>
+
+unsigned long bus_clock, cpu_clock_freq;
+unsigned long memsize, highmemsize;
+
+int prom_argc;
+/* pmon passes arguments in 32bit pointers */
+int *_prom_argv, *_prom_envp;
+
+#define parse_even_earlier(res, option, p)                             \
+do {                                                                   \
+       if (strncmp(option, (char *)p, strlen(option)) == 0)            \
+                       strict_strtol((char *)p + strlen(option"="),    \
+                                       10, &res);                      \
+} while (0)
+
+void __init prom_init_cmdline(void)
+{
+       int i;
+       long l;
+       prom_argc = fw_arg0;
+       _prom_argv = (int *)fw_arg1;
+       _prom_envp = (int *)fw_arg2;
+
+       /* arg[0] is "g", the rest is boot parameters */
+       arcs_cmdline[0] = '\0';
+       for (i = 1; i < prom_argc; i++) {
+               l = (long)_prom_argv[i];
+               if (strlen(arcs_cmdline) + strlen(((char *)l) + 1)
+                   >= sizeof(arcs_cmdline))
+                       break;
+               strcat(arcs_cmdline, ((char *)l));
+               strcat(arcs_cmdline, " ");
+       }
+
+       /* handle console, root, busclock, cpuclock, memsize, highmemsize
+       arguments */
+
+       if ((strstr(arcs_cmdline, "console=")) == NULL)
+               strcat(arcs_cmdline, " console=ttyS0,115200");
+       if ((strstr(arcs_cmdline, "root=")) == NULL)
+               strcat(arcs_cmdline, " root=/dev/hda1");
+
+       l = (long)*_prom_envp;
+       while (l != 0) {
+               parse_even_earlier(bus_clock, "busclock", l);
+               parse_even_earlier(cpu_clock_freq, "cpuclock", l);
+               parse_even_earlier(memsize, "memsize", l);
+               parse_even_earlier(highmemsize, "highmemsize", l);
+               _prom_envp++;
+               l = (long)*_prom_envp;
+       }
+       if (memsize == 0)
+               memsize = 256;
+
+       pr_info("busclock=%ld, cpuclock=%ld, memsize=%ld, highmemsize=%ld\n",
+               bus_clock, cpu_clock_freq, memsize, highmemsize);
+}
diff --git a/arch/mips/loongson/common/early_printk.c 
b/arch/mips/loongson/common/early_printk.c
new file mode 100644
index 0000000..9f4b881
--- /dev/null
+++ b/arch/mips/loongson/common/early_printk.c
@@ -0,0 +1,28 @@
+/*  early printk support
+ *
+ *  Copyright (c) 2009 Philippe Vachon <philippe@cowpig.ca>
+ *
+ *  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
+ *  option) any later version.
+ */
+
+#include <linux/types.h>
+#include <linux/serial_reg.h>
+
+#include <loongson.h>
+#include <machine.h>
+
+void prom_putchar(char c)
+{
+       int timeout;
+       phys_addr_t uart_base =
+           (phys_addr_t) ioremap_nocache(LOONGSON_UART_BASE, 8);
+       char reg = readb((u8 *) (uart_base + UART_LSR)) & UART_LSR_THRE;
+
+       for (timeout = 1024; reg == 0 && timeout > 0; timeout--)
+               reg = readb((u8 *) (uart_base + UART_LSR)) & UART_LSR_THRE;
+
+       writeb(c, (u8 *) (uart_base + UART_TX));
+}
diff --git a/arch/mips/loongson/common/init.c b/arch/mips/loongson/common/init.c
new file mode 100644
index 0000000..76e6fda
--- /dev/null
+++ b/arch/mips/loongson/common/init.c
@@ -0,0 +1,40 @@
+/*
+ * Based on Ocelot Linux port, which is
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: jsun@mvista.com or jsun@junsun.net
+ *
+ * Copyright 2003 ICT CAS
+ * Author: Michael Guo <guoyi@ict.ac.cn>
+ *
+ * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
+ * Author: Fuxin Zhang, zhangfx@lemote.com
+ *
+ * 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
+ * option) any later version.
+ */
+
+#include <linux/bootmem.h>
+
+#include <asm/bootinfo.h>
+#include <asm/cpu.h>
+
+#include <loongson.h>
+
+void __init prom_init(void)
+{
+       /* init mach type, does we need to init it?? */
+       mips_machtype = PRID_IMP_LOONGSON2;
+
+       /* init several base address */
+       set_io_port_base((unsigned long)
+                        ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE));
+
+       prom_init_cmdline();
+       prom_init_memory();
+}
+
+void __init prom_free_prom_memory(void)
+{
+}
diff --git a/arch/mips/loongson/common/irq.c b/arch/mips/loongson/common/irq.c
new file mode 100644
index 0000000..5834f35
--- /dev/null
+++ b/arch/mips/loongson/common/irq.c
@@ -0,0 +1,109 @@
+/*
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
+ * Copyright (C) 2000, 2001 Ralf Baechle (ralf@gnu.org)
+ *
+ * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
+ * Author: Fuxin Zhang, zhangfx@lemote.com
+ *
+ *  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
+ *  option) any later version.
+ */
+
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+
+#include <asm/irq_cpu.h>
+#include <asm/i8259.h>
+
+#include <loongson.h>
+#include <machine.h>
+
+/*
+ * the first level int-handler will jump here if it is a loongson irq
+ */
+void bonito_irqdispatch(void)
+{
+       u32 int_status;
+       int i;
+
+       /* workaround the IO dma problem: let cpu looping to allow DMA finish */
+       int_status = LOONGSON_INTISR;
+       while (int_status & (1 << 10)) {
+               udelay(1);
+               int_status = LOONGSON_INTISR;
+       }
+
+       /* Get pending sources, masked by current enables */
+       int_status = LOONGSON_INTISR & LOONGSON_INTEN;
+
+       if (int_status != 0) {
+               i = __ffs(int_status);
+               int_status &= ~(1 << i);
+               do_IRQ(LOONGSON_IRQ_BASE + i);
+       }
+}
+
+void i8259_irqdispatch(void)
+{
+       int irq;
+
+       irq = mach_i8259_irq();
+       if (irq < 0)
+               spurious_interrupt();
+       else
+               do_IRQ(irq);
+}
+
+asmlinkage void plat_irq_dispatch(void)
+{
+       unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
+
+       mach_irq_dispatch(pending);
+}
+
+
+static struct irqaction cascade_irqaction = {
+       .handler = no_action,
+       .name = "cascade",
+};
+
+void __init arch_init_irq(void)
+{
+       /*
+        * Clear all of the interrupts while we change the able around a bit.
+        * int-handler is not on bootstrap
+        */
+       clear_c0_status(ST0_IM | ST0_BEV);
+       local_irq_disable();
+
+       /* setting irq trigger mode */
+       set_irq_trigger_mode();
+
+       /* no steer */
+       LOONGSON_INTSTEER = 0;
+
+       /*
+        * Mask out all interrupt by writing "1" to all bit position in
+        * the interrupt reset reg.
+        */
+       LOONGSON_INTENCLR = ~0;
+
+       /* init all controller
+        *   0-15         ------> i8259 interrupt
+        *   16-23        ------> mips cpu interrupt
+        *   32-63        ------> bonito irq
+        */
+
+       /* Sets the first-level interrupt dispatcher. */
+       mips_cpu_irq_init();
+       init_i8259_irqs();
+       bonito_irq_init();
+
+       /* setup north bridge irq (bonito) */
+       setup_irq(LOONGSON_NORTH_BRIDGE_IRQ, &cascade_irqaction);
+       /* setup source bridge irq (i8259) */
+       setup_irq(LOONGSON_SOUTH_BRIDGE_IRQ, &cascade_irqaction);
+}
diff --git a/arch/mips/loongson/common/mem.c b/arch/mips/loongson/common/mem.c
new file mode 100644
index 0000000..17a7278
--- /dev/null
+++ b/arch/mips/loongson/common/mem.c
@@ -0,0 +1,40 @@
+/*
+ * 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
+ * option) any later version.
+ */
+
+#include <linux/fs.h>
+#include <linux/mm.h>
+
+#include <asm/bootinfo.h>
+
+#include <loongson.h>
+#include <mem.h>
+
+void __init prom_init_memory(void)
+{
+       add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
+#ifdef CONFIG_64BIT
+       if (highmemsize > 0) {
+               add_memory_region(LOONGSON_HIGHMEM_START,
+                                 highmemsize << 20, BOOT_MEM_RAM);
+       }
+#endif                         /* CONFIG_64BIT */
+}
+
+/* override of arch/mips/mm/cache.c: __uncached_access */
+int __uncached_access(struct file *file, unsigned long addr)
+{
+       if (file->f_flags & O_SYNC)
+               return 1;
+
+       /*
+        * On the Lemote Loongson 2e system, the peripheral registers
+        * reside between 0x1000:0000 and 0x2000:0000.
+        */
+       return addr >= __pa(high_memory) ||
+               ((addr >= LOONGSON_MMIO_MEM_START) && \
+                       (addr < LOONGSON_MMIO_MEM_END));
+}
diff --git a/arch/mips/loongson/common/misc.c b/arch/mips/loongson/common/misc.c
new file mode 100644
index 0000000..1b8044c
--- /dev/null
+++ b/arch/mips/loongson/common/misc.c
@@ -0,0 +1,15 @@
+/* Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
+ * Author: Wu Zhangjin, wuzj@lemote.com
+ *
+ * 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
+ * option) any later version.
+ */
+
+#include <machine.h>
+
+const char *get_system_type(void)
+{
+       return MACH_NAME;
+}
diff --git a/arch/mips/loongson/common/pci.c b/arch/mips/loongson/common/pci.c
new file mode 100644
index 0000000..e97c845
--- /dev/null
+++ b/arch/mips/loongson/common/pci.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
+ * Author: Fuxin Zhang, zhangfx@lemote.com
+ *
+ *  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
+ *  option) any later version.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  You should have received a copy of the  GNU General Public License along
+ *  with this program; if not, write  to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/pci.h>
+
+#include <loongson.h>
+#include <pci.h>
+
+static struct resource loongson_pci_mem_resource = {
+       .name   = "LOONGSON PCI MEM",
+       .start  = LOONGSON_PCI_MEM_START,
+       .end    = LOONGSON_PCI_MEM_END,
+       .flags  = IORESOURCE_MEM,
+};
+
+static struct resource loongson_pci_io_resource = {
+       .name   = "LOONGSON PCI IO MEM",
+       .start  = LOONGSON_PCI_IO_START,
+       .end    = IO_SPACE_LIMIT,
+       .flags  = IORESOURCE_IO,
+};
+
+static struct pci_controller  loongson_pci_controller = {
+       .pci_ops        = &loongson_pci_ops,
+       .io_resource    = &loongson_pci_io_resource,
+       .mem_resource   = &loongson_pci_mem_resource,
+       .mem_offset     = 0x00000000UL,
+       .io_offset      = 0x00000000UL,
+};
+
+static void __init ict_pcimap(void)
+{
+       /*
+        * local to PCI mapping for CPU accessing PCI space
+        *
+        * CPU address space [256M,448M] is window for accessing pci space
+        * we set pcimap_lo[0,1,2] to map it to pci space[0M,64M], [320M,448M]
+        *
+        * pcimap: PCI_MAP2  PCI_Mem_Lo2 PCI_Mem_Lo1 PCI_Mem_Lo0
+        *           [<2G]   [384M,448M] [320M,384M] [0M,64M]
+        */
+       LOONGSON_PCIMAP = LOONGSON_PCIMAP_PCIMAP_2 |
+           LOONGSON_PCIMAP_WIN(2, 0x18000000) |
+           LOONGSON_PCIMAP_WIN(1, 0x14000000) |
+           LOONGSON_PCIMAP_WIN(0, 0);
+
+       /*
+        * PCI-DMA to local mapping: [2G,2G+256M] -> [0M,256M]
+        */
+       LOONGSON_PCIBASE0 = 0x80000000ul;       /* base: 2G -> mmap: 0M */
+       /* size: 256M, burst transmission, pre-fetch enable, 64bit */
+       LOONGSON_PCI_HIT0_SEL_L = 0xc000000cul;
+       LOONGSON_PCI_HIT0_SEL_H = 0xfffffffful;
+       LOONGSON_PCI_HIT1_SEL_L = 0x00000006ul; /* set this BAR as invalid */
+       LOONGSON_PCI_HIT1_SEL_H = 0x00000000ul;
+       LOONGSON_PCI_HIT2_SEL_L = 0x00000006ul; /* set this BAR as invalid */
+       LOONGSON_PCI_HIT2_SEL_H = 0x00000000ul;
+
+       /* avoid deadlock of PCI reading/writing lock operation */
+       LOONGSON_PCI_ISR4C = 0xd2000001ul;
+
+       /* can not change gnt to break pci transfer when device's gnt not
+       deassert for some broken device */
+       LOONGSON_PXARB_CFG = 0x00fe0105ul;
+}
+
+static int __init pcibios_init(void)
+{
+       ict_pcimap();
+
+       loongson_pci_controller.io_map_base = mips_io_port_base;
+
+       register_pci_controller(&loongson_pci_controller);
+
+       return 0;
+}
+
+arch_initcall(pcibios_init);
diff --git a/arch/mips/loongson/common/reset.c 
b/arch/mips/loongson/common/reset.c
new file mode 100644
index 0000000..c3431fb
--- /dev/null
+++ b/arch/mips/loongson/common/reset.c
@@ -0,0 +1,38 @@
+/*
+ * 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
+ * option) any later version.
+ *
+ * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
+ * Author: Fuxin Zhang, zhangfx@lemote.com
+ */
+
+#include <linux/pm.h>
+
+#include <asm/reboot.h>
+
+#include <loongson.h>
+
+static void loongson_restart(char *command)
+{
+       /* perform board-specific pre-reboot operations */
+       mach_prepare_reboot();
+
+       /* reboot via jumping to 0xbfc00000 */
+       ((void (*)(void))ioremap_nocache(LOONGSON_BOOT_BASE, 4)) ();
+}
+
+static void loongson_halt(void)
+{
+       mach_prepare_shutdown();
+       while (1)
+               ;
+}
+
+void __init loongson_reboot_setup(void)
+{
+       _machine_restart = loongson_restart;
+       _machine_halt = loongson_halt;
+       pm_power_off = loongson_halt;
+}
diff --git a/arch/mips/loongson/common/rtc.c b/arch/mips/loongson/common/rtc.c
new file mode 100644
index 0000000..1eb39b4
--- /dev/null
+++ b/arch/mips/loongson/common/rtc.c
@@ -0,0 +1,54 @@
+/*
+ *  Registration of Cobalt RTC platform device.
+ *
+ *  Copyright (C) 2007  Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
+ *  Copyright (C) 2009  Wu Zhangjin <wuzj@lemote.com>
+ *
+ *  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 option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ *  MA  02110-1301  USA
+ */
+
+#include <linux/ioport.h>
+#include <linux/mc146818rtc.h>
+#include <linux/platform_device.h>
+
+static struct resource rtc_cmos_resource[] = {
+       {
+               .start  = RTC_PORT(0),
+               .end    = RTC_PORT(1),
+               .flags  = IORESOURCE_IO,
+       },
+       {
+               .start  = RTC_IRQ,
+               .end    = RTC_IRQ,
+               .flags  = IORESOURCE_IRQ,
+       },
+};
+
+static struct platform_device rtc_cmos_device = {
+       .name           = "rtc_cmos",
+       .id             = -1,
+       .num_resources  = ARRAY_SIZE(rtc_cmos_resource),
+       .resource       = rtc_cmos_resource
+};
+
+static __init int rtc_cmos_init(void)
+{
+       platform_device_register(&rtc_cmos_device);
+
+       return 0;
+}
+
+device_initcall(rtc_cmos_init);
diff --git a/arch/mips/loongson/common/setup.c 
b/arch/mips/loongson/common/setup.c
new file mode 100644
index 0000000..4fcbe48
--- /dev/null
+++ b/arch/mips/loongson/common/setup.c
@@ -0,0 +1,74 @@
+/*
+ * board dependent setup routines
+ *
+ * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
+ * Author: Fuxin Zhang, zhangfx@lemote.com
+ *
+ * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
+ * Author: Wu Zhangjin, wuzj@lemote.com
+ *
+ *  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
+ *  option) any later version.
+ */
+
+#include <linux/module.h>
+
+#include <asm/wbflush.h>
+
+#include <loongson.h>
+
+void (*__wbflush) (void);
+EXPORT_SYMBOL(__wbflush);
+
+static void loongson_wbflush(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");
+}
+
+void __init loongson_wbflush_setup(void)
+{
+       __wbflush = loongson_wbflush;
+}
+
+#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)
+#include <linux/screen_info.h>
+
+void __init loongson_screeninfo_setup(void)
+{
+       screen_info = (struct screen_info) {
+                   0,          /* orig-x */
+                   25,         /* orig-y */
+                   0,          /* unused */
+                   0,          /* orig-video-page */
+                   0,          /* orig-video-mode */
+                   80,         /* orig-video-cols */
+                   0,          /* ega_ax */
+                   0,          /* ega_bx */
+                   0,          /* ega_cx */
+                   25,         /* orig-video-lines */
+                   VIDEO_TYPE_VGAC,    /* orig-video-isVGA */
+                   16          /* orig-video-points */
+       };
+}
+#else
+void __init loongson_screeninfo_setup(void)
+{
+}
+#endif
+
+void __init plat_mem_setup(void)
+{
+       loongson_reboot_setup();
+
+       loongson_wbflush_setup();
+
+       loongson_screeninfo_setup();
+}
diff --git a/arch/mips/loongson/common/time.c b/arch/mips/loongson/common/time.c
new file mode 100644
index 0000000..231f0c2
--- /dev/null
+++ b/arch/mips/loongson/common/time.c
@@ -0,0 +1,27 @@
+/*
+ * board dependent boot routines
+ *
+ * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
+ * Author: Fuxin Zhang, zhangfx@lemote.com
+ *
+ *  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
+ *  option) any later version.
+ */
+
+#include <asm/mc146818-time.h>
+#include <asm/time.h>
+
+#include <loongson.h>
+
+unsigned long read_persistent_clock(void)
+{
+       return mc146818_get_cmos_time();
+}
+
+void __init plat_time_init(void)
+{
+       /* setup mips r4k timer */
+       mips_hpt_frequency = cpu_clock_freq / 2;
+}
diff --git a/arch/mips/loongson/fuloong-2e/Makefile 
b/arch/mips/loongson/fuloong-2e/Makefile
index 76904da..1ee57a1 100644
--- a/arch/mips/loongson/fuloong-2e/Makefile
+++ b/arch/mips/loongson/fuloong-2e/Makefile
@@ -1,20 +1,7 @@
 #
-# Makefile for Lemote Fulong mini-PC board.
+# Makefile for fuloong-2e
 #
 
-obj-y += setup.o init.o cmdline.o time.o reset.o irq.o \
-       pci.o bonito-irq.o mem.o misc.o
-
-#
-# Early printk support
-#
-obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
-
-#
-# Enable RTC Class support
-#
-# please enable CONFIG_RTC_DRV_CMOS
-#
-obj-$(CONFIG_RTC_DRV_CMOS) += rtc.o
+obj-y += irq.o reset.o
 
 EXTRA_CFLAGS += -Werror
diff --git a/arch/mips/loongson/fuloong-2e/bonito-irq.c 
b/arch/mips/loongson/fuloong-2e/bonito-irq.c
deleted file mode 100644
index 1f43447..0000000
--- a/arch/mips/loongson/fuloong-2e/bonito-irq.c
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * Copyright 2001 MontaVista Software Inc.
- * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
- * Copyright (C) 2000, 2001 Ralf Baechle (ralf@gnu.org)
- *
- * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
- * Author: Fuxin Zhang, zhangfx@lemote.com
- *
- *  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
- *  option) any later version.
- *
- *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
- *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
- *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
- *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
- *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
- *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
- *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *  You should have received a copy of the  GNU General Public License along
- *  with this program; if not, write  to the Free Software Foundation, Inc.,
- *  675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#include <linux/interrupt.h>
-
-#include <loongson.h>
-#include <machine.h>
-
-static inline void bonito_irq_enable(unsigned int irq)
-{
-       LOONGSON_INTENSET = (1 << (irq - LOONGSON_IRQ_BASE));
-       mmiowb();
-}
-
-static inline void bonito_irq_disable(unsigned int irq)
-{
-       LOONGSON_INTENCLR = (1 << (irq - LOONGSON_IRQ_BASE));
-       mmiowb();
-}
-
-static struct irq_chip bonito_irq_type = {
-       .name   = "bonito_irq",
-       .ack    = bonito_irq_disable,
-       .mask   = bonito_irq_disable,
-       .mask_ack = bonito_irq_disable,
-       .unmask = bonito_irq_enable,
-};
-
-static struct irqaction dma_timeout_irqaction = {
-       .handler        = no_action,
-       .name           = "dma_timeout",
-};
-
-void bonito_irq_init(void)
-{
-       u32 i;
-
-       for (i = LOONGSON_IRQ_BASE; i < LOONGSON_IRQ_BASE + 32; i++)
-               set_irq_chip_and_handler(i, &bonito_irq_type, handle_level_irq);
-
-       setup_irq(LOONGSON_DMATIMEOUT_IRQ, &dma_timeout_irqaction);
-}
diff --git a/arch/mips/loongson/fuloong-2e/cmdline.c 
b/arch/mips/loongson/fuloong-2e/cmdline.c
deleted file mode 100644
index 01e30db..0000000
--- a/arch/mips/loongson/fuloong-2e/cmdline.c
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- * Based on Ocelot Linux port, which is
- * Copyright 2001 MontaVista Software Inc.
- * Author: jsun@mvista.com or jsun@junsun.net
- *
- * Copyright 2003 ICT CAS
- * Author: Michael Guo <guoyi@ict.ac.cn>
- *
- * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
- * Author: Fuxin Zhang, zhangfx@lemote.com
- *
- * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
- * Author: Wu Zhangjin, wuzj@lemote.com
- *
- * 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
- * option) any later version.
- */
-
-#include <linux/bootmem.h>
-
-#include <asm/bootinfo.h>
-
-unsigned long bus_clock, cpu_clock_freq;
-unsigned long memsize, highmemsize;
-
-int prom_argc;
-/* pmon passes arguments in 32bit pointers */
-int *_prom_argv, *_prom_envp;
-
-#define parse_even_earlier(res, option, p)                             \
-do {                                                                   \
-       if (strncmp(option, (char *)p, strlen(option)) == 0)            \
-                       strict_strtol((char *)p + strlen(option"="),    \
-                                   10, &res);                          \
-} while (0)
-
-void __init prom_init_cmdline(void)
-{
-       int i;
-       long l;
-       prom_argc = fw_arg0;
-       _prom_argv = (int *)fw_arg1;
-       _prom_envp = (int *)fw_arg2;
-
-       /* arg[0] is "g", the rest is boot parameters */
-       arcs_cmdline[0] = '\0';
-       for (i = 1; i < prom_argc; i++) {
-               l = (long)_prom_argv[i];
-               if (strlen(arcs_cmdline) + strlen(((char *)l) + 1)
-                   >= sizeof(arcs_cmdline))
-                       break;
-               strcat(arcs_cmdline, ((char *)l));
-               strcat(arcs_cmdline, " ");
-       }
-
-       if ((strstr(arcs_cmdline, "console=")) == NULL)
-               strcat(arcs_cmdline, " console=ttyS0,115200");
-       if ((strstr(arcs_cmdline, "root=")) == NULL)
-               strcat(arcs_cmdline, " root=/dev/hda1");
-
-       l = (long)*_prom_envp;
-       while (l != 0) {
-               parse_even_earlier(bus_clock, "busclock", l);
-               parse_even_earlier(cpu_clock_freq, "cpuclock", l);
-               parse_even_earlier(memsize, "memsize", l);
-               parse_even_earlier(highmemsize, "highmemsize", l);
-               _prom_envp++;
-               l = (long)*_prom_envp;
-       }
-       if (memsize == 0)
-               memsize = 256;
-
-       pr_info("busclock=%ld, cpuclock=%ld, memsize=%ld, highmemsize=%ld\n",
-              bus_clock, cpu_clock_freq, memsize, highmemsize);
-}
diff --git a/arch/mips/loongson/fuloong-2e/early_printk.c 
b/arch/mips/loongson/fuloong-2e/early_printk.c
deleted file mode 100644
index 9f4b881..0000000
--- a/arch/mips/loongson/fuloong-2e/early_printk.c
+++ /dev/null
@@ -1,28 +0,0 @@
-/*  early printk support
- *
- *  Copyright (c) 2009 Philippe Vachon <philippe@cowpig.ca>
- *
- *  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
- *  option) any later version.
- */
-
-#include <linux/types.h>
-#include <linux/serial_reg.h>
-
-#include <loongson.h>
-#include <machine.h>
-
-void prom_putchar(char c)
-{
-       int timeout;
-       phys_addr_t uart_base =
-           (phys_addr_t) ioremap_nocache(LOONGSON_UART_BASE, 8);
-       char reg = readb((u8 *) (uart_base + UART_LSR)) & UART_LSR_THRE;
-
-       for (timeout = 1024; reg == 0 && timeout > 0; timeout--)
-               reg = readb((u8 *) (uart_base + UART_LSR)) & UART_LSR_THRE;
-
-       writeb(c, (u8 *) (uart_base + UART_TX));
-}
diff --git a/arch/mips/loongson/fuloong-2e/init.c 
b/arch/mips/loongson/fuloong-2e/init.c
deleted file mode 100644
index 76e6fda..0000000
--- a/arch/mips/loongson/fuloong-2e/init.c
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Based on Ocelot Linux port, which is
- * Copyright 2001 MontaVista Software Inc.
- * Author: jsun@mvista.com or jsun@junsun.net
- *
- * Copyright 2003 ICT CAS
- * Author: Michael Guo <guoyi@ict.ac.cn>
- *
- * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
- * Author: Fuxin Zhang, zhangfx@lemote.com
- *
- * 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
- * option) any later version.
- */
-
-#include <linux/bootmem.h>
-
-#include <asm/bootinfo.h>
-#include <asm/cpu.h>
-
-#include <loongson.h>
-
-void __init prom_init(void)
-{
-       /* init mach type, does we need to init it?? */
-       mips_machtype = PRID_IMP_LOONGSON2;
-
-       /* init several base address */
-       set_io_port_base((unsigned long)
-                        ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE));
-
-       prom_init_cmdline();
-       prom_init_memory();
-}
-
-void __init prom_free_prom_memory(void)
-{
-}
diff --git a/arch/mips/loongson/fuloong-2e/irq.c 
b/arch/mips/loongson/fuloong-2e/irq.c
index 7bf9e18..00e95ad 100644
--- a/arch/mips/loongson/fuloong-2e/irq.c
+++ b/arch/mips/loongson/fuloong-2e/irq.c
@@ -24,57 +24,20 @@
  *
  */
 
-#include <linux/delay.h>
 #include <linux/interrupt.h>
 
-#include <asm/irq_cpu.h>
 #include <asm/i8259.h>
 
 #include <loongson.h>
 #include <machine.h>
 
-/*
- * the first level int-handler will jump here if it is a bonito irq
- */
-static void bonito_irqdispatch(void)
-{
-       u32 int_status;
-       int i;
-
-       /* workaround the IO dma problem: let cpu looping to allow DMA finish */
-       int_status = LOONGSON_INTISR;
-       if (int_status & (1 << 10)) {
-               while (int_status & (1 << 10)) {
-                       udelay(1);
-                       int_status = LOONGSON_INTISR;
-               }
-       }
-
-       /* Get pending sources, masked by current enables */
-       int_status = LOONGSON_INTISR & LOONGSON_INTEN;
-
-       if (int_status != 0) {
-               i = __ffs(int_status);
-               int_status &= ~(1 << i);
-               do_IRQ(LOONGSON_IRQ_BASE + i);
-       }
-}
-
-static void i8259_irqdispatch(void)
+inline int mach_i8259_irq(void)
 {
-       int irq;
-
-       irq = i8259_irq();
-       if (irq >= 0)
-               do_IRQ(irq);
-       else
-               spurious_interrupt();
+       return i8259_irq();
 }
 
-asmlinkage void plat_irq_dispatch(void)
+inline void mach_irq_dispatch(unsigned int pending)
 {
-       unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
-
        if (pending & CAUSEF_IP7)
                do_IRQ(LOONGSON_TIMER_IRQ);
        else if (pending & CAUSEF_IP5)
@@ -85,52 +48,9 @@ asmlinkage void plat_irq_dispatch(void)
                spurious_interrupt();
 }
 
-static struct irqaction cascade_irqaction = {
-       .handler = no_action,
-       .name = "cascade",
-};
-
-void __init arch_init_irq(void)
+void __init set_irq_trigger_mode(void)
 {
-       /*
-        * Clear all of the interrupts while we change the able around a bit.
-        * int-handler is not on bootstrap
-        */
-       clear_c0_status(ST0_IM | ST0_BEV);
-       local_irq_disable();
-
        /* most bonito irq should be level triggered */
        LOONGSON_INTEDGE = LOONGSON_ICU_SYSTEMERR | LOONGSON_ICU_MASTERERR |
                LOONGSON_ICU_RETRYERR | LOONGSON_ICU_MBOXES;
-       LOONGSON_INTSTEER = 0;
-
-       /*
-        * Mask out all interrupt by writing "1" to all bit position in
-        * the interrupt reset reg.
-        */
-       LOONGSON_INTENCLR = ~0;
-
-       /* init all controller
-        *   0-15         ------> i8259 interrupt
-        *   16-23        ------> mips cpu interrupt
-        *   32-63        ------> bonito irq
-        */
-
-       /* Sets the first-level interrupt dispatcher. */
-       mips_cpu_irq_init();
-       init_i8259_irqs();
-       bonito_irq_init();
-
-       /*
-       printk("GPIODATA=%x, GPIOIE=%x\n", LOONGSON_GPIODATA, LOONGSON_GPIOIE);
-       printk("INTEN=%x, INTSET=%x, INTCLR=%x, INTISR=%x\n",
-                       LOONGSON_INTEN, LOONGSON_INTENSET,
-                       LOONGSON_INTENCLR, LOONGSON_INTISR);
-       */
-
-       /* bonito irq at IP2 */
-       setup_irq(LOONGSON_NORTH_BRIDGE_IRQ, &cascade_irqaction);
-       /* 8259 irq at IP5 */
-       setup_irq(LOONGSON_SOUTH_BRIDGE_IRQ, &cascade_irqaction);
-
 }
diff --git a/arch/mips/loongson/fuloong-2e/mem.c 
b/arch/mips/loongson/fuloong-2e/mem.c
deleted file mode 100644
index 7f6ee37..0000000
--- a/arch/mips/loongson/fuloong-2e/mem.c
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * 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
- * option) any later version.
- */
-
-#include <linux/fs.h>
-#include <linux/mm.h>
-
-#include <asm/bootinfo.h>
-
-#include <loongson.h>
-#include <mem.h>
-
-void __init prom_init_memory(void)
-{
-       add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
-#ifdef CONFIG_64BIT
-       if (highmemsize > 0) {
-               add_memory_region(LOONGSON_HIGHMEM_START,
-                                 highmemsize << 20, BOOT_MEM_RAM);
-       }
-#endif                         /* CONFIG_64BIT */
-}
-
-/* override of arch/mips/mm/cache.c: __uncached_access */
-int __uncached_access(struct file *file, unsigned long addr)
-{
-       if (file->f_flags & O_SYNC)
-               return 1;
-
-       /*
-        * On the Lemote Loongson 2e system, the peripheral registers
-        * reside between 0x1000:0000 and 0x2000:0000.
-        */
-       return addr >= __pa(high_memory) || \
-               ((addr >= LOONGSON_MMIO_MEM_START) && \
-                       (addr < LOONGSON_MMIO_MEM_END));
-}
diff --git a/arch/mips/loongson/fuloong-2e/misc.c 
b/arch/mips/loongson/fuloong-2e/misc.c
deleted file mode 100644
index 1b8044c..0000000
--- a/arch/mips/loongson/fuloong-2e/misc.c
+++ /dev/null
@@ -1,15 +0,0 @@
-/* Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
- * Author: Wu Zhangjin, wuzj@lemote.com
- *
- * 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
- * option) any later version.
- */
-
-#include <machine.h>
-
-const char *get_system_type(void)
-{
-       return MACH_NAME;
-}
diff --git a/arch/mips/loongson/fuloong-2e/pci.c 
b/arch/mips/loongson/fuloong-2e/pci.c
deleted file mode 100644
index 89bc1af..0000000
--- a/arch/mips/loongson/fuloong-2e/pci.c
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- * pci.c
- *
- * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
- * Author: Fuxin Zhang, zhangfx@lemote.com
- *
- *  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
- *  option) any later version.
- *
- *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
- *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
- *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
- *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
- *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
- *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
- *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *  You should have received a copy of the  GNU General Public License along
- *  with this program; if not, write  to the Free Software Foundation, Inc.,
- *  675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-#include <linux/pci.h>
-
-#include <loongson.h>
-#include <pci.h>
-
-static struct resource loongson_pci_mem_resource = {
-       .name   = "LOONGSON PCI MEM",
-       .start  = LOONGSON_PCI_MEM_START,
-       .end    = LOONGSON_PCI_MEM_END,
-       .flags  = IORESOURCE_MEM,
-};
-
-static struct resource loongson_pci_io_resource = {
-       .name   = "LOONGSON PCI IO MEM",
-       .start  = LOONGSON_PCI_IO_START,
-       .end    = IO_SPACE_LIMIT,
-       .flags  = IORESOURCE_IO,
-};
-
-static struct pci_controller  loongson_pci_controller = {
-       .pci_ops        = &loongson_pci_ops,
-       .io_resource    = &loongson_pci_io_resource,
-       .mem_resource   = &loongson_pci_mem_resource,
-       .mem_offset     = 0x00000000UL,
-       .io_offset      = 0x00000000UL,
-};
-
-static void __init ict_pcimap(void)
-{
-       /*
-        * local to PCI mapping for CPU accessing PCI space
-        *
-        * CPU address space [256M,448M] is window for accessing pci space
-        * we set pcimap_lo[0,1,2] to map it to pci space[0M, 64M], [320M,448M]
-        *
-        * pcimap:  PCI_MAP2  PCI_Mem_Lo2 PCI_Mem_Lo1 PCI_Mem_Lo0
-        *            [<2G]   [384M,448M] [320M,384M] [0M,64M]
-        */
-       LOONGSON_PCIMAP = LOONGSON_PCIMAP_PCIMAP_2 |
-           LOONGSON_PCIMAP_WIN(2, 0x18000000) |
-           LOONGSON_PCIMAP_WIN(1, 0x14000000) |
-           LOONGSON_PCIMAP_WIN(0, 0);
-
-       /*
-        * PCI-DMA to local mapping: [2G,2G+256M] -> [0M,256M]
-        */
-       LOONGSON_PCIBASE0 = 0x80000000ul;       /* base: 2G -> mmap: 0M */
-       /* size: 256M, burst transmission, pre-fetch enable, 64bit */
-       LOONGSON_PCI_HIT0_SEL_L = 0xc000000cul;
-       LOONGSON_PCI_HIT0_SEL_H = 0xfffffffful;
-       LOONGSON_PCI_HIT1_SEL_L = 0x00000006ul; /* set this BAR as invalid */
-       LOONGSON_PCI_HIT1_SEL_H = 0x00000000ul;
-       LOONGSON_PCI_HIT2_SEL_L = 0x00000006ul; /* set this BAR as invalid */
-       LOONGSON_PCI_HIT2_SEL_H = 0x00000000ul;
-
-       /* avoid deadlock of PCI reading/writing lock operation */
-       LOONGSON_PCI_ISR4C = 0xd2000001ul;
-
-       /* can not change gnt to break pci transfer when device's gnt not
-       deassert for some broken device */
-       LOONGSON_PXARB_CFG = 0x00fe0105ul;
-}
-
-static int __init pcibios_init(void)
-{
-       ict_pcimap();
-
-       loongson_pci_controller.io_map_base = mips_io_port_base;
-
-       register_pci_controller(&loongson_pci_controller);
-
-       return 0;
-}
-
-arch_initcall(pcibios_init);
diff --git a/arch/mips/loongson/fuloong-2e/reset.c 
b/arch/mips/loongson/fuloong-2e/reset.c
index 87244a1..4ad0923 100644
--- a/arch/mips/loongson/fuloong-2e/reset.c
+++ b/arch/mips/loongson/fuloong-2e/reset.c
@@ -1,40 +1,26 @@
-/*
+/* Board-specific reboot/shutdown routines
+ * Copyright (c) 2009 Philippe Vachon <philippe@cowpig.ca>
+ *
+ * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
+ * Author: Wu Zhangjin, wuzj@lemote.com
+ *
  * 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
  * option) any later version.
- *
- * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
- * Author: Fuxin Zhang, zhangfx@lemote.com
- *
- * Copyright (c) 2009 Philippe Vachon <philippe@cowpig.ca>
- *
- * Copyright (c) 2009 Lemote, Inc. & Institute of Computing Technology
- * Author: Wu Zhangjin, wuzj@lemote.com
  */
-#include <linux/pm.h>
 
-#include <asm/reboot.h>
+#include <linux/delay.h>
+#include <linux/types.h>
+
 #include <loongson.h>
 
-static void loongson_restart(char *command)
+void mach_prepare_reboot(void)
 {
        LOONGSON_GENCFG &= ~LOONGSON_GENCFG_CPUSELFRESET;
        LOONGSON_GENCFG |= LOONGSON_GENCFG_CPUSELFRESET;
-
-       /* reboot via jumping to 0xbfc00000 */
-       ((void (*)(void))ioremap_nocache(LOONGSON_BOOT_BASE, 4)) ();
-}
-
-static void loongson_halt(void)
-{
-       while (1)
-               ;
 }
 
-void loongson_reboot_setup(void)
+void mach_prepare_shutdown(void)
 {
-       _machine_restart = loongson_restart;
-       _machine_halt = loongson_halt;
-       pm_power_off = loongson_halt;
 }
diff --git a/arch/mips/loongson/fuloong-2e/rtc.c 
b/arch/mips/loongson/fuloong-2e/rtc.c
deleted file mode 100644
index 469ada8..0000000
--- a/arch/mips/loongson/fuloong-2e/rtc.c
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- *  Registration of Cobalt RTC platform device.
- *
- *  Copyright (C) 2007  Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
- *  Copyright (C) 2009  Wu Zhangjin <wuzj@lemote.com>
- *
- *  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 option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
- *  MA 02110-1301 USA
- */
-
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/mc146818rtc.h>
-#include <linux/platform_device.h>
-
-static struct resource rtc_cmos_resource[] = {
-       {
-               .start  = RTC_PORT(0),
-               .end    = RTC_PORT(1),
-               .flags  = IORESOURCE_IO,
-       },
-       {
-               .start  = RTC_IRQ,
-               .end    = RTC_IRQ,
-               .flags  = IORESOURCE_IRQ,
-       },
-};
-
-static struct platform_device rtc_cmos_device = {
-       .name           = "rtc_cmos",
-       .id             = -1,
-       .num_resources  = ARRAY_SIZE(rtc_cmos_resource),
-       .resource       = rtc_cmos_resource
-};
-
-static __init int rtc_cmos_init(void)
-{
-       platform_device_register(&rtc_cmos_device);
-
-       return 0;
-}
-
-device_initcall(rtc_cmos_init);
diff --git a/arch/mips/loongson/fuloong-2e/setup.c 
b/arch/mips/loongson/fuloong-2e/setup.c
deleted file mode 100644
index 4fcbe48..0000000
--- a/arch/mips/loongson/fuloong-2e/setup.c
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * board dependent setup routines
- *
- * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
- * Author: Fuxin Zhang, zhangfx@lemote.com
- *
- * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
- * Author: Wu Zhangjin, wuzj@lemote.com
- *
- *  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
- *  option) any later version.
- */
-
-#include <linux/module.h>
-
-#include <asm/wbflush.h>
-
-#include <loongson.h>
-
-void (*__wbflush) (void);
-EXPORT_SYMBOL(__wbflush);
-
-static void loongson_wbflush(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");
-}
-
-void __init loongson_wbflush_setup(void)
-{
-       __wbflush = loongson_wbflush;
-}
-
-#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)
-#include <linux/screen_info.h>
-
-void __init loongson_screeninfo_setup(void)
-{
-       screen_info = (struct screen_info) {
-                   0,          /* orig-x */
-                   25,         /* orig-y */
-                   0,          /* unused */
-                   0,          /* orig-video-page */
-                   0,          /* orig-video-mode */
-                   80,         /* orig-video-cols */
-                   0,          /* ega_ax */
-                   0,          /* ega_bx */
-                   0,          /* ega_cx */
-                   25,         /* orig-video-lines */
-                   VIDEO_TYPE_VGAC,    /* orig-video-isVGA */
-                   16          /* orig-video-points */
-       };
-}
-#else
-void __init loongson_screeninfo_setup(void)
-{
-}
-#endif
-
-void __init plat_mem_setup(void)
-{
-       loongson_reboot_setup();
-
-       loongson_wbflush_setup();
-
-       loongson_screeninfo_setup();
-}
diff --git a/arch/mips/loongson/fuloong-2e/time.c 
b/arch/mips/loongson/fuloong-2e/time.c
deleted file mode 100644
index 231f0c2..0000000
--- a/arch/mips/loongson/fuloong-2e/time.c
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * board dependent boot routines
- *
- * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
- * Author: Fuxin Zhang, zhangfx@lemote.com
- *
- *  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
- *  option) any later version.
- */
-
-#include <asm/mc146818-time.h>
-#include <asm/time.h>
-
-#include <loongson.h>
-
-unsigned long read_persistent_clock(void)
-{
-       return mc146818_get_cmos_time();
-}
-
-void __init plat_time_init(void)
-{
-       /* setup mips r4k timer */
-       mips_hpt_frequency = cpu_clock_freq / 2;
-}
-- 
1.6.0.4


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