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MIPS: Loongson: Split common loongson source code out

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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>
This commit is contained in:
Wu Zhangjin 2009-07-02 23:26:45 +08:00 committed by Ralf Baechle
parent 8e4971175a
commit 85749d24bc
24 changed files with 351 additions and 133 deletions
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32
arch/mips/Kconfig
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@ -174,30 +174,15 @@ config LASAT
select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
select SYS_SUPPORTS_LITTLE_ENDIAN
config LEMOTE_FULOONG2E
bool "Lemote Fuloong2e 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 MACH_LOONGSON
bool "Loongson family of machines"
help
Lemote Fuloong2e mini-PC board based on the Chinese Loongson-2E CPU and
an FPGA northbridge
This enables the support of Loongson family of 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"
@ -668,6 +653,7 @@ 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

7
arch/mips/Makefile
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@ -314,11 +314,12 @@ cflags-$(CONFIG_WR_PPMC) += -I$(srctree)/arch/mips/include/asm/mach-wrppmc
load-$(CONFIG_WR_PPMC) += 0xffffffff80100000
#
# lemote fuloong2e mini-PC board
# Loongson family
#
core-$(CONFIG_LEMOTE_FULOONG2E) +=arch/mips/loongson/fuloong-2e/
core-$(CONFIG_MACH_LOONGSON) +=arch/mips/loongson/
cflags-$(CONFIG_MACH_LOONGSON) += -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

11
arch/mips/include/asm/mach-loongson/loongson.h
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@ -21,6 +21,10 @@
/* loongson internal northbridge initialization */
extern void bonito_irq_init(void);
/* machine-specific reboot/halt operation */
extern void mach_prepare_reboot(void);
extern void mach_prepare_shutdown(void);
/* environment arguments from bootloader */
extern unsigned long bus_clock, cpu_clock_freq;
extern unsigned long memsize, highmemsize;
@ -30,6 +34,13 @@ extern void __init prom_init_memory(void);
extern void __init prom_init_cmdline(void);
extern void __init prom_init_env(void);
/* irq operation functions */
extern void bonito_irqdispatch(void);
extern void __init bonito_irq_init(void);
extern void __init set_irq_trigger_mode(void);
extern void __init mach_init_irq(void);
extern void mach_irq_dispatch(unsigned int pending);
/* PCI Configuration Registers */
#define LOONGSON_PCI_ISR4C BONITO_PCI_REG(0x4c)

22
arch/mips/include/asm/mach-loongson/machine.h Normal file
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@ -0,0 +1,22 @@
/*
* Copyright (C) 2009 Lemote, Inc. & Institute 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.
*/
#ifndef __ASM_MACH_LOONGSON_MACHINE_H
#define __ASM_MACH_LOONGSON_MACHINE_H
#ifdef CONFIG_LEMOTE_FULOONG2E
#define LOONGSON_UART_BASE (BONITO_PCIIO_BASE + 0x3f8)
#define LOONGSON_MACHNAME "lemote-fuloong-2e-box"
#endif
#endif /* __ASM_MACH_LOONGSON_MACHINE_H */

30
arch/mips/include/asm/mach-loongson/mem.h Normal file
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@ -0,0 +1,30 @@
/*
* Copyright (C) 2009 Lemote, Inc. & Institute 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.
*/
#ifndef __ASM_MACH_LOONGSON_MEM_H
#define __ASM_MACH_LOONGSON_MEM_H
/*
* On Lemote Loongson 2e
*
* the high memory space starts from 512M.
* the peripheral registers reside between 0x1000:0000 and 0x2000:0000.
*/
#ifdef CONFIG_LEMOTE_FULOONG2E
#define LOONGSON_HIGHMEM_START 0x20000000
#define LOONGSON_MMIO_MEM_START 0x10000000
#define LOONGSON_MMIO_MEM_END 0x20000000
#endif
#endif /* __ASM_MACH_LOONGSON_MEM_H */

12
arch/mips/include/asm/mach-loongson/pci.h
View File

@ -24,8 +24,14 @@
extern struct pci_ops bonito64_pci_ops;
#define LOONGSON2E_PCI_MEM_START BONITO_PCILO1_BASE
#define LOONGSON2E_PCI_MEM_END (BONITO_PCILO1_BASE + 0x04000000 * 2)
#define LOONGSON2E_PCI_IO_START 0x00004000UL
#ifdef CONFIG_LEMOTE_FULOONG2E
/* this pci memory space is mapped by pcimap in pci.c */
#define LOONGSON_PCI_MEM_START BONITO_PCILO1_BASE
#define LOONGSON_PCI_MEM_END (BONITO_PCILO1_BASE + 0x04000000 * 2)
/* this is an offset from mips_io_port_base */
#define LOONGSON_PCI_IO_START 0x00004000UL
#endif
#endif /* !__ASM_MACH_LOONGSON_PCI_H_ */

31
arch/mips/loongson/Kconfig Normal file
View File

@ -0,0 +1,31 @@
choice
prompt "Machine Type"
depends on MACH_LOONGSON
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 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 Fuloong(2e) mini-PC board based on the Chinese Loongson-2E CPU and
an FPGA northbridge
Lemote Fuloong(2e) mini PC have a VIA686B south bridge.
endchoice

11
arch/mips/loongson/Makefile Normal file
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@ -0,0 +1,11 @@
#
# Common code for all Loongson based systems
#
obj-$(CONFIG_MACH_LOONGSON) += common/
#
# Lemote Fuloong mini-PC (Loongson 2E-based)
#
obj-$(CONFIG_LEMOTE_FULOONG2E) += fuloong-2e/

11
arch/mips/loongson/common/Makefile Normal file
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@ -0,0 +1,11 @@
#
# Makefile for loongson based machines.
#
obj-y += setup.o init.o cmdline.o env.o time.o reset.o irq.o \
pci.o bonito-irq.o mem.o
#
# Early printk support
#
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o

0
arch/mips/loongson/fuloong-2e/bonito-irq.c → arch/mips/loongson/common/bonito-irq.c
View File

0
arch/mips/loongson/fuloong-2e/cmdline.c → arch/mips/loongson/common/cmdline.c
View File

5
arch/mips/loongson/fuloong-2e/early_printk.c → arch/mips/loongson/common/early_printk.c
View File

@ -12,8 +12,7 @@
#include <linux/serial_reg.h>
#include <loongson.h>
#define UART_BASE (BONITO_PCIIO_BASE + 0x3f8)
#include <machine.h>
#define PORT(base, offset) (u8 *)(base + offset)
@ -30,7 +29,7 @@ static inline void serial_out(phys_addr_t base, int offset, int value)
void prom_putchar(char c)
{
phys_addr_t uart_base =
(phys_addr_t) ioremap_nocache(UART_BASE, 8);
(phys_addr_t) ioremap_nocache(LOONGSON_UART_BASE, 8);
while ((serial_in(uart_base, UART_LSR) & UART_LSR_THRE) == 0)
;

0
arch/mips/loongson/fuloong-2e/env.c → arch/mips/loongson/common/env.c
View File

0
arch/mips/loongson/fuloong-2e/init.c → arch/mips/loongson/common/init.c
View File

74
arch/mips/loongson/common/irq.c Normal file
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@ -0,0 +1,74 @@
/*
* 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 <loongson.h>
/*
* the first level int-handler will jump here if it is a bonito irq
*/
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);
}
}
asmlinkage void plat_irq_dispatch(void)
{
unsigned int pending;
pending = read_c0_cause() & read_c0_status() & ST0_IM;
/* machine-specific plat_irq_dispatch */
mach_irq_dispatch(pending);
}
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 */
BONITO_INTSTEER = 0;
/*
* Mask out all interrupt by writing "1" to all bit position in
* the interrupt reset reg.
*/
BONITO_INTENCLR = ~0;
/* machine specific irq init */
mach_init_irq();
}

4
arch/mips/loongson/fuloong-2e/machtype.c → arch/mips/loongson/common/machtype.c
View File

@ -8,8 +8,10 @@
* option) any later version.
*/
#include <machine.h>
const char *get_system_type(void)
{
return "lemote-fuloong-2e-box";
return LOONGSON_MACHNAME;
}

11
arch/mips/loongson/fuloong-2e/mem.c → arch/mips/loongson/common/mem.c
View File

@ -11,13 +11,15 @@
#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(0x20000000, highmemsize << 20, BOOT_MEM_RAM);
add_memory_region(LOONGSON_HIGHMEM_START,
highmemsize << 20, BOOT_MEM_RAM);
#endif /* CONFIG_64BIT */
}
@ -27,10 +29,7 @@ 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));
((addr >= LOONGSON_MMIO_MEM_START) &&
(addr < LOONGSON_MMIO_MEM_END));
}

24
arch/mips/loongson/fuloong-2e/pci.c → arch/mips/loongson/common/pci.c
View File

@ -12,24 +12,24 @@
#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,
static struct resource loongson_pci_mem_resource = {
.name = "pci memory space",
.start = LOONGSON_PCI_MEM_START,
.end = LOONGSON_PCI_MEM_END,
.flags = IORESOURCE_MEM,
};
static struct resource loongson2e_pci_io_resource = {
.name = "LOONGSON2E PCI IO MEM",
.start = LOONGSON2E_PCI_IO_START,
static struct resource loongson_pci_io_resource = {
.name = "pci io space",
.start = LOONGSON_PCI_IO_START,
.end = IO_SPACE_LIMIT,
.flags = IORESOURCE_IO,
};
static struct pci_controller loongson2e_pci_controller = {
static struct pci_controller loongson_pci_controller = {
.pci_ops = &bonito64_pci_ops,
.io_resource = &loongson2e_pci_io_resource,
.mem_resource = &loongson2e_pci_mem_resource,
.io_resource = &loongson_pci_io_resource,
.mem_resource = &loongson_pci_mem_resource,
.mem_offset = 0x00000000UL,
.io_offset = 0x00000000UL,
};
@ -73,9 +73,9 @@ static int __init pcibios_init(void)
{
setup_pcimap();
loongson2e_pci_controller.io_map_base = mips_io_port_base;
loongson_pci_controller.io_map_base = mips_io_port_base;
register_pci_controller(&loongson2e_pci_controller);
register_pci_controller(&loongson_pci_controller);
return 0;
}

44
arch/mips/loongson/common/reset.c Normal file
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@ -0,0 +1,44 @@
/*
* 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 loongson_restart(char *command)
{
/* do preparation for reboot */
mach_prepare_reboot();
/* reboot via jumping to boot base address */
((void (*)(void))ioremap_nocache(BONITO_BOOT_BASE, 4)) ();
}
static void loongson_halt(void)
{
mach_prepare_shutdown();
while (1)
;
}
static int __init mips_reboot_setup(void)
{
_machine_restart = loongson_restart;
_machine_halt = loongson_halt;
pm_power_off = loongson_halt;
return 0;
}
arch_initcall(mips_reboot_setup);

58
arch/mips/loongson/common/setup.c Normal file
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@ -0,0 +1,58 @@
/*
* 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/module.h>
#include <asm/wbflush.h>
#include <loongson.h>
#ifdef CONFIG_VT
#include <linux/console.h>
#include <linux/screen_info.h>
#endif
void (*__wbflush)(void);
EXPORT_SYMBOL(__wbflush);
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");
}
void __init plat_mem_setup(void)
{
__wbflush = wbflush_loongson;
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
conswitchp = &vga_con;
screen_info = (struct screen_info) {
0, 25, /* orig-x, orig-y */
0, /* unused */
0, /* orig-video-page */
0, /* orig-video-mode */
80, /* orig-video-cols */
0, 0, 0, /* ega_ax, ega_bx, ega_cx */
25, /* orig-video-lines */
VIDEO_TYPE_VGAC, /* orig-video-isVGA */
16 /* orig-video-points */
};
#elif defined(CONFIG_DUMMY_CONSOLE)
conswitchp = &dummy_con;
#endif
#endif
}

0
arch/mips/loongson/fuloong-2e/time.c → arch/mips/loongson/common/time.c
View File

8
arch/mips/loongson/fuloong-2e/Makefile
View File

@ -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

50
arch/mips/loongson/fuloong-2e/irq.c
View File

@ -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;
}
void __init mach_init_irq(void)
{
/* init all controller
* 0-15 ------> i8259 interrupt
* 16-23 ------> mips cpu interrupt

37
arch/mips/loongson/fuloong-2e/reset.c
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@ -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);