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>

12 files changed, 15 insertions, 473 deletions

diff --git a/arch/mips/loongson/fuloong-2e/Makefile b/arch/mips/loongson/fuloong-2e/Makefile
index feb1d6bba499..96e45c13c850 100644
--- a/arch/mips/loongson/fuloong-2e/Makefile
+++ b/arch/mips/loongson/fuloong-2e/Makefile
@@ -2,12 +2,6 @@
 # Makefile for Lemote Fuloong2e mini-PC board.
 #
 
-obj-y += setup.o init.o reset.o irq.o pci.o bonito-irq.o mem.o \
-		env.o cmdline.o time.o machtype.o
-
-#
-# Early printk support
-#
-obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
+obj-y += irq.o reset.o machtype.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 3e31e7ad713e..000000000000
--- a/arch/mips/loongson/fuloong-2e/bonito-irq.c
+++ /dev/null
@@ -1,51 +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.
- */
-#include <linux/interrupt.h>
-
-#include <loongson.h>
-
-static inline void bonito_irq_enable(unsigned int irq)
-{
-	BONITO_INTENSET = (1 << (irq - BONITO_IRQ_BASE));
-	mmiowb();
-}
-
-static inline void bonito_irq_disable(unsigned int irq)
-{
-	BONITO_INTENCLR = (1 << (irq - BONITO_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 = BONITO_IRQ_BASE; i < BONITO_IRQ_BASE + 32; i++)
-		set_irq_chip_and_handler(i, &bonito_irq_type, handle_level_irq);
-
-	setup_irq(BONITO_IRQ_BASE + 10, &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 75f1b243ee4e..000000000000
--- a/arch/mips/loongson/fuloong-2e/cmdline.c
+++ /dev/null
@@ -1,52 +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 <asm/bootinfo.h>
-
-#include <loongson.h>
-
-int prom_argc;
-/* pmon passes arguments in 32bit pointers */
-int *_prom_argv;
-
-void __init prom_init_cmdline(void)
-{
-	int i;
-	long l;
-
-	/* firmware arguments are initialized in head.S */
-	prom_argc = fw_arg0;
-	_prom_argv = (int *)fw_arg1;
-
-	/* 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");
-}
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 3e0a6eaa4041..000000000000
--- a/arch/mips/loongson/fuloong-2e/early_printk.c
+++ /dev/null
@@ -1,39 +0,0 @@
-/*  early printk support
- *
- *  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.
- */
-#include <linux/serial_reg.h>
-
-#include <loongson.h>
-
-#define UART_BASE (BONITO_PCIIO_BASE + 0x3f8)
-
-#define PORT(base, offset) (u8 *)(base + offset)
-
-static inline unsigned int serial_in(phys_addr_t base, int offset)
-{
-	return readb(PORT(base, offset));
-}
-
-static inline void serial_out(phys_addr_t base, int offset, int value)
-{
-	writeb(value, PORT(base, offset));
-}
-
-void prom_putchar(char c)
-{
-	phys_addr_t uart_base =
-		(phys_addr_t) ioremap_nocache(UART_BASE, 8);
-
-	while ((serial_in(uart_base, UART_LSR) & UART_LSR_THRE) == 0)
-		;
-
-	serial_out(uart_base, UART_TX, c);
-}
diff --git a/arch/mips/loongson/fuloong-2e/env.c b/arch/mips/loongson/fuloong-2e/env.c
deleted file mode 100644
index b9ef50385541..000000000000
--- a/arch/mips/loongson/fuloong-2e/env.c
+++ /dev/null
@@ -1,58 +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 <asm/bootinfo.h>
-
-#include <loongson.h>
-
-unsigned long bus_clock, cpu_clock_freq;
-unsigned long memsize, highmemsize;
-
-/* pmon passes arguments in 32bit pointers */
-int *_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_env(void)
-{
-	long l;
-
-	/* firmware arguments are initialized in head.S */
-	_prom_envp = (int *)fw_arg2;
-
-	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/init.c b/arch/mips/loongson/fuloong-2e/init.c
deleted file mode 100644
index 3abe927422a3..000000000000
--- a/arch/mips/loongson/fuloong-2e/init.c
+++ /dev/null
@@ -1,30 +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 <linux/bootmem.h>
-
-#include <asm/bootinfo.h>
-
-#include <loongson.h>
-
-void __init prom_init(void)
-{
-    /* init base address of io space */
-	set_io_port_base((unsigned long)
-		ioremap(BONITO_PCIIO_BASE, BONITO_PCIIO_SIZE));
-
-	prom_init_cmdline();
-	prom_init_env();
-	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 9585f5aa7cce..7888cf69424a 100644
--- a/arch/mips/loongson/fuloong-2e/irq.c
+++ b/arch/mips/loongson/fuloong-2e/irq.c
@@ -7,39 +7,12 @@
  *  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>
-/*
- * 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 = BONITO_INTISR;
-	if (int_status & (1 << 10)) {
-		while (int_status & (1 << 10)) {
-			udelay(1);
-			int_status = BONITO_INTISR;
-		}
-	}
-
-	/* Get pending sources, masked by current enables */
-	int_status = BONITO_INTISR & BONITO_INTEN;
-
-	if (int_status != 0) {
-		i = __ffs(int_status);
-		int_status &= ~(1 << i);
-		do_IRQ(BONITO_IRQ_BASE + i);
-	}
-}
 
 static void i8259_irqdispatch(void)
 {
@@ -52,10 +25,8 @@ static void i8259_irqdispatch(void)
 		spurious_interrupt();
 }
 
-asmlinkage void plat_irq_dispatch(void)
+asmlinkage void mach_irq_dispatch(unsigned int pending)
 {
-	unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
-
 	if (pending & CAUSEF_IP7)
 		do_IRQ(MIPS_CPU_IRQ_BASE + 7);
 	else if (pending & CAUSEF_IP6) /* perf counter loverflow */
@@ -73,26 +44,15 @@ static struct irqaction cascade_irqaction = {
 	.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 */
 	BONITO_INTEDGE = BONITO_ICU_SYSTEMERR | BONITO_ICU_MASTERERR |
-		BONITO_ICU_RETRYERR | BONITO_ICU_MBOXES;
-	BONITO_INTSTEER = 0;
-
-	/*
-	 * Mask out all interrupt by writing "1" to all bit position in
-	 * the interrupt reset reg.
-	 */
-	BONITO_INTENCLR = ~0;
+	    BONITO_ICU_RETRYERR | BONITO_ICU_MBOXES;
+}
 
+void __init mach_init_irq(void)
+{
 	/* init all controller
 	 *   0-15         ------> i8259 interrupt
 	 *   16-23        ------> mips cpu interrupt
diff --git a/arch/mips/loongson/fuloong-2e/machtype.c b/arch/mips/loongson/fuloong-2e/machtype.c
deleted file mode 100644
index e03aa0de6176..000000000000
--- a/arch/mips/loongson/fuloong-2e/machtype.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.
- */
-
-const char *get_system_type(void)
-{
-	return "lemote-fuloong-2e-box";
-}
-
diff --git a/arch/mips/loongson/fuloong-2e/mem.c b/arch/mips/loongson/fuloong-2e/mem.c
deleted file mode 100644
index 6a7feb178fa5..000000000000
--- a/arch/mips/loongson/fuloong-2e/mem.c
+++ /dev/null
@@ -1,36 +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/fcntl.h>
-#include <linux/mm.h>
-
-#include <asm/bootinfo.h>
-
-#include <loongson.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(0x20000000, 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 >= 0x10000000) && (addr < 0x20000000));
-}
diff --git a/arch/mips/loongson/fuloong-2e/pci.c b/arch/mips/loongson/fuloong-2e/pci.c
deleted file mode 100644
index 9812c30cc6eb..000000000000
--- a/arch/mips/loongson/fuloong-2e/pci.c
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * 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.
- */
-#include <linux/pci.h>
-
-#include <pci.h>
-#include <loongson.h>
-
-static struct resource loongson2e_pci_mem_resource = {
-	.name   = "LOONGSON2E PCI MEM",
-	.start  = LOONGSON2E_PCI_MEM_START,
-	.end    = LOONGSON2E_PCI_MEM_END,
-	.flags  = IORESOURCE_MEM,
-};
-
-static struct resource loongson2e_pci_io_resource = {
-	.name   = "LOONGSON2E PCI IO MEM",
-	.start  = LOONGSON2E_PCI_IO_START,
-	.end    = IO_SPACE_LIMIT,
-	.flags  = IORESOURCE_IO,
-};
-
-static struct pci_controller  loongson2e_pci_controller = {
-	.pci_ops        = &bonito64_pci_ops,
-	.io_resource    = &loongson2e_pci_io_resource,
-	.mem_resource   = &loongson2e_pci_mem_resource,
-	.mem_offset     = 0x00000000UL,
-	.io_offset      = 0x00000000UL,
-};
-
-static void __init setup_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]
-	 */
-	BONITO_PCIMAP = BONITO_PCIMAP_PCIMAP_2 |
-		BONITO_PCIMAP_WIN(2, BONITO_PCILO2_BASE) |
-		BONITO_PCIMAP_WIN(1, BONITO_PCILO1_BASE) |
-		BONITO_PCIMAP_WIN(0, 0);
-
-	/*
-	 * PCI-DMA to local mapping: [2G,2G+256M] -> [0M,256M]
-	 */
-	BONITO_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)
-{
-	setup_pcimap();
-
-	loongson2e_pci_controller.io_map_base = mips_io_port_base;
-
-	register_pci_controller(&loongson2e_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 c21299af7f64..677fe186db95 100644
--- a/arch/mips/loongson/fuloong-2e/reset.c
+++ b/arch/mips/loongson/fuloong-2e/reset.c
@@ -1,44 +1,23 @@
-/*
+/* 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 Lemote, Inc. & Institute of Computing Technology
- * Author: Zhangjin Wu, wuzj@lemote.com
  */
-#include <linux/init.h>
-#include <linux/pm.h>
-
-#include <asm/reboot.h>
 
 #include <loongson.h>
 
-static void loongson2e_restart(char *command)
+void mach_prepare_reboot(void)
 {
-	/* do preparation for reboot */
 	BONITO_BONGENCFG &= ~(1 << 2);
 	BONITO_BONGENCFG |= (1 << 2);
-
-	/* reboot via jumping to boot base address */
-	((void (*)(void))ioremap_nocache(BONITO_BOOT_BASE, 4)) ();
 }
 
-static void loongson2e_halt(void)
+void mach_prepare_shutdown(void)
 {
-	while (1)
-		;
 }
-
-static int __init mips_reboot_setup(void)
-{
-	_machine_restart = loongson2e_restart;
-	_machine_halt = loongson2e_halt;
-	pm_power_off = loongson2e_halt;
-
-	return 0;
-}
-
-arch_initcall(mips_reboot_setup);
diff --git a/arch/mips/loongson/fuloong-2e/time.c b/arch/mips/loongson/fuloong-2e/time.c
deleted file mode 100644
index b13d17174654..000000000000
--- a/arch/mips/loongson/fuloong-2e/time.c
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * Copyright (C) 2007 Lemote, Inc. & Institute 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 <asm/mc146818-time.h>
-#include <asm/time.h>
-
-#include <loongson.h>
-
-void __init plat_time_init(void)
-{
-	/* setup mips r4k timer */
-	mips_hpt_frequency = cpu_clock_freq / 2;
-}
-
-unsigned long read_persistent_clock(void)
-{
-	return mc146818_get_cmos_time();
-}