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MIPS:Target support for qemu -M mips 

With serial, NE2000, IDE support. Tested in big-endian mode.
Memory size hard-coded to 128M for now, so don't play with
the -m option.

Signed-off-by: Vlad Lungu <vlad@comsys.ro>
This commit is contained in:
Vlad Lungu 2008-01-16 19:27:51 +02:00 committed by Shinya Kuribayashi
parent 4c9e98ace7
commit 0764c164fe
11 changed files with 482 additions and 0 deletions
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3
MAINTAINERS
View File

@ -583,6 +583,9 @@ Thomas Lange <thomas@corelatus.se>
dbau1x00 MIPS32 Au1000
gth2 MIPS32 Au1000
Vlad Lungu <vlad@comsys.ro>
qemu_mips MIPS32
#########################################################################
# Nios-32 Systems: #
# #

1
MAKEALL
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@ -543,6 +543,7 @@ LIST_arm=" \
LIST_mips4kc=" \
incaip \
qemu_mips \
"
LIST_mips5kc=" \

6
Makefile
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@ -2601,6 +2601,12 @@ pb1000_config : unconfig
@echo "#define CONFIG_PB1000 1" >>$(obj)include/config.h
@$(MKCONFIG) -a pb1x00 mips mips pb1x00
qemu_mips_config: unconfig
@mkdir -p $(obj)include
@ >$(obj)include/config.h
@echo "#define CONFIG_QEMU_MIPS 1" >>$(obj)include/config.h
@$(MKCONFIG) -a qemu-mips mips mips qemu-mips
#########################################################################
## MIPS64 5Kc
#########################################################################

45
board/qemu-mips/Makefile Normal file
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@ -0,0 +1,45 @@
#
# (C) Copyright 2003-2006
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# See file CREDITS for list of people who contributed to this
# project.
#
# 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., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
#
include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a
COBJS = $(BOARD).o flash.o
SOBJS = lowlevel_init.o
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS))
SOBJS := $(addprefix $(obj),$(SOBJS))
$(LIB): $(OBJS) $(SOBJS)
$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
#########################################################################
# defines $(obj).depend target
include $(SRCTREE)/rules.mk
sinclude $(obj).depend
#########################################################################

11
board/qemu-mips/README Normal file
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@ -0,0 +1,11 @@
By Vlad Lungu vlad@comsys.ro 2007-Oct-01
----------------------------------------
Qemu is a full system emulator. See
http://fabrice.bellard.free.fr/qemu
Limitations & comments
----------------------
Supports the "-m mips" configuration of qemu: serial,NE2000,IDE.
Support is big endian only for now (or at least this is what I tested).
Derived from au1x00 with a lot of things cut out.

10
board/qemu-mips/config.mk Normal file
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@ -0,0 +1,10 @@
#
# Qemu -M mips system emulator
# See http://fabrice.bellard.free.fr/qemu
#
# ROM version
TEXT_BASE = 0xbfc00000
# RAM version
#TEXT_BASE = 0x80001000

40
board/qemu-mips/flash.c Normal file
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@ -0,0 +1,40 @@
/*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
/*-----------------------------------------------------------------------
* flash_init()
*
* sets up flash_info and returns size of FLASH (bytes)
*/
unsigned long flash_init(void)
{
printf("Skipping flash_init\n");
return(0);
}
int write_buff(void *info, uchar *src, ulong addr, ulong cnt)
{
printf("write_buff not implemented\n");
return(-1);
}

41
board/qemu-mips/lowlevel_init.S Normal file
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@ -0,0 +1,41 @@
/* Memory sub-system initialization code */
#include <config.h>
#include <version.h>
#include <asm/regdef.h>
#include <asm/mipsregs.h>
.text
.set noreorder
.set mips32
.globl lowlevel_init
lowlevel_init:
/*
* Step 2) Establish Status Register
* (set BEV, clear ERL, clear EXL, clear IE)
*/
li t1, 0x00400000
mtc0 t1, CP0_STATUS
/*
* Step 3) Establish CP0 Config0
* (set K0=3)
*/
li t1, 0x00000003
mtc0 t1, CP0_CONFIG
/*
* Step 7) Establish Cause
* (set IV bit)
*/
li t1, 0x00800000
mtc0 t1, CP0_CAUSE
/* Establish Wired (and Random) */
mtc0 zero, CP0_WIRED
nop
j ra
nop

89
board/qemu-mips/qemu-mips.c Normal file
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@ -0,0 +1,89 @@
/*
* (C) Copyright 2007
* Vlad Lungu vlad@comsys.ro
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <command.h>
#include <asm/mipsregs.h>
#include <asm/io.h>
long int initdram(int board_type)
{
/* Sdram is setup by assembler code */
/* If memory could be changed, we should return the true value here */
return MEM_SIZE*1024*1024;
}
int checkboard(void)
{
u32 proc_id;
u32 config1;
proc_id = read_32bit_cp0_register(CP0_PRID);
printf("Board: Qemu -M mips CPU: ");
switch (proc_id) {
case 0x00018000:
printf("4Kc");
break;
case 0x00018400:
printf("4KEcR1");
break;
case 0x00019000:
printf("4KEc");
break;
case 0x00019300:
config1 = read_mips32_cp0_config1();
if (config1 & 1)
printf("24Kf");
else
printf("24Kc");
break;
case 0x00019500:
printf("34Kf");
break;
case 0x00000400:
printf("R4000");
break;
case 0x00018100:
config1 = read_mips32_cp0_config1();
if (config1 & 1)
printf("5Kf");
else
printf("5Kc");
break;
case 0x000182a0:
printf("20Kc");
break;
default:
printf("unknown");
}
printf(" proc_id=0x%x\n", proc_id);
return 0;
}
int misc_init_r(void)
{
set_io_port_base(0);
return 0;
}

72
board/qemu-mips/u-boot.lds Normal file
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@ -0,0 +1,72 @@
/*
* (C) Copyright 2003
* Wolfgang Denk Engineering, <wd@denx.de>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/*
OUTPUT_FORMAT("elf32-bigmips", "elf32-bigmips", "elf32-bigmips")
*/
OUTPUT_FORMAT("elf32-tradbigmips", "elf32-tradbigmips", "elf32-tradbigmips")
OUTPUT_ARCH(mips)
ENTRY(_start)
SECTIONS
{
. = 0x00000000;
. = ALIGN(4);
.text :
{
*(.text)
}
. = ALIGN(4);
.rodata : { *(.rodata) }
. = ALIGN(4);
.data : { *(.data) }
. = .;
_gp = ALIGN(16) +0x7ff0;
.got : {
__got_start = .;
*(.got)
__got_end = .;
}
. = ALIGN(4);
.sdata : { *(.sdata) }
. = .;
.u_boot_cmd : {
__u_boot_cmd_start = .;
*(.u_boot_cmd)
__u_boot_cmd_end = .;
}
uboot_end_data = .;
num_got_entries = (__got_end - __got_start) >> 2;
. = ALIGN(4);
.sbss : { *(.sbss) }
.bss : { *(.bss) }
uboot_end = .;
}

164
include/configs/qemu-mips.h Normal file
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@ -0,0 +1,164 @@
/*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/*
* This file contains the configuration parameters for the dbau1x00 board.
*/
#ifndef __CONFIG_H
#define __CONFIG_H
#define CONFIG_MIPS32 1 /* MIPS32 CPU core */
#define CONFIG_QEMU_MIPS 1
#define CONFIG_MISC_INIT_R
#undef DEBUG
/*IP address is default used by Qemu*/
#define CONFIG_IPADDR 10.0.2.15 /* Our IP address */
#define CONFIG_SERVERIP 10.0.2.2 /* Server IP address*/
#define CONFIG_BOOTDELAY 10 /* autoboot after 10 seconds */
#define CONFIG_BAUDRATE 115200
/* valid baudrates */
#define CFG_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
#define CONFIG_TIMESTAMP /* Print image info with timestamp */
#undef CONFIG_BOOTARGS
#define CONFIG_EXTRA_ENV_SETTINGS \
"addmisc=setenv bootargs ${bootargs} " \
"console=ttyS0,${baudrate} " \
"panic=1\0" \
"bootfile=/tftpboot/vmlinux\0" \
"load=tftp 80500000 ${u-boot}\0" \
""
#define CONFIG_BOOTCOMMAND "bootp;bootelf"
/*
* BOOTP options
*/
#define CONFIG_BOOTP_BOOTFILESIZE
#define CONFIG_BOOTP_BOOTPATH
#define CONFIG_BOOTP_GATEWAY
#define CONFIG_BOOTP_HOSTNAME
/*
* Command line configuration.
*/
#include <config_cmd_default.h>
#define CONFIG_CMD_ELF
#define CONFIG_CMD_FAT
#define CONFIG_CMD_EXT2
#undef CONFIG_CMD_IMLS
#undef CONFIG_CMD_FLASH
#undef CONFIG_CMD_LOADB
#undef CONFIG_CMD_LOADS
#define CONFIG_CMD_DHCP
#define CONFIG_DRIVER_NE2000
#define CONFIG_DRIVER_NE2000_BASE (0xb4000300)
#define CFG_NO_FLASH
#define CFG_NS16550
#define CFG_NS16550_SERIAL
#define CFG_NS16550_REG_SIZE 1
#define CFG_NS16550_CLK 115200
#define CFG_NS16550_COM1 (0xb40003f8)
#define CONFIG_CONS_INDEX 1
#define CONFIG_CMD_IDE
#define CONFIG_DOS_PARTITION
#define CFG_IDE_MAXBUS 2
#define CFG_ATA_IDE0_OFFSET (0x1f0)
#define CFG_ATA_IDE1_OFFSET (0x170)
#define CFG_ATA_DATA_OFFSET (0)
#define CFG_ATA_REG_OFFSET (0)
#define CFG_ATA_BASE_ADDR (0xb4000000)
#define CFG_IDE_MAXDEVICE (4)
/*
* Miscellaneous configurable options
*/
#define CFG_LONGHELP /* undef to save memory */
#define CFG_PROMPT "qemu-mips # " /* Monitor Command Prompt */
#define CFG_CBSIZE 256 /* Console I/O Buffer Size */
#define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */
#define CFG_MAXARGS 16 /* max number of command args*/
#define CFG_MALLOC_LEN 128*1024
#define CFG_BOOTPARAMS_LEN 128*1024
#define CFG_MHZ 132
#define CFG_HZ (CFG_MHZ * 1000000)
#define CFG_SDRAM_BASE 0x80000000 /* Cached addr */
#define CFG_LOAD_ADDR 0x81000000 /* default load address */
#define CFG_MEMTEST_START 0x80100000
#define CFG_MEMTEST_END 0x80800000
/*-----------------------------------------------------------------------
* FLASH and environment organization
*/
/* The following #defines are needed to get flash environment right */
#define CFG_MONITOR_BASE TEXT_BASE
#define CFG_MONITOR_LEN (192 << 10)
#define CFG_INIT_SP_OFFSET 0x400000
/* We boot from this flash, selected with dip switch */
#define CFG_FLASH_BASE 0xbfc00000
#define CFG_ENV_IS_NOWHERE 1
/* Address and size of Primary Environment Sector */
#define CFG_ENV_SIZE 0x10000
#undef CONFIG_NET_MULTI
#define MEM_SIZE 128
#undef CONFIG_MEMSIZE_IN_BYTES
/*-----------------------------------------------------------------------
* Cache Configuration
*/
#define CFG_DCACHE_SIZE 16384
#define CFG_ICACHE_SIZE 16384
#define CFG_CACHELINE_SIZE 32
#endif /* __CONFIG_H */