[U-Boot-Users] [PATCH v2] MIPS:Target support for qemu -M mips
Vlad Lungu
vlad at comsys.ro
Wed Jan 16 18:27:51 CET 2008
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 at comsys.ro>
---
MAINTAINERS | 3 +
MAKEALL | 1 +
Makefile | 6 ++
board/qemu-mips/Makefile | 45 +++++++++++
board/qemu-mips/README | 11 +++
board/qemu-mips/config.mk | 10 +++
board/qemu-mips/flash.c | 40 ++++++++++
board/qemu-mips/lowlevel_init.S | 41 ++++++++++
board/qemu-mips/qemu-mips.c | 89 +++++++++++++++++++++
board/qemu-mips/u-boot.lds | 72 +++++++++++++++++
include/configs/qemu-mips.h | 164 +++++++++++++++++++++++++++++++++++++++
11 files changed, 482 insertions(+), 0 deletions(-)
create mode 100644 board/qemu-mips/Makefile
create mode 100644 board/qemu-mips/README
create mode 100644 board/qemu-mips/config.mk
create mode 100644 board/qemu-mips/flash.c
create mode 100644 board/qemu-mips/lowlevel_init.S
create mode 100644 board/qemu-mips/qemu-mips.c
create mode 100644 board/qemu-mips/u-boot.lds
create mode 100644 include/configs/qemu-mips.h
diff --git a/MAINTAINERS b/MAINTAINERS
index 40b2b51..ac46786 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -578,6 +578,9 @@ Thomas Lange <thomas at corelatus.se>
dbau1x00 MIPS32 Au1000
gth2 MIPS32 Au1000
+Vlad Lungu <vlad at comsys.ro>
+ qemu_mips MIPS32
+
#########################################################################
# Nios-32 Systems: #
# #
diff --git a/MAKEALL b/MAKEALL
index bec3541..817fbe6 100755
--- a/MAKEALL
+++ b/MAKEALL
@@ -541,6 +541,7 @@ LIST_arm=" \
LIST_mips4kc=" \
incaip \
+ qemu_mips \
"
LIST_mips5kc=" \
diff --git a/Makefile b/Makefile
index 8a888b9..283f7f2 100644
--- a/Makefile
+++ b/Makefile
@@ -2595,6 +2595,12 @@ 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
#########################################################################
diff --git a/board/qemu-mips/Makefile b/board/qemu-mips/Makefile
new file mode 100644
index 0000000..23be447
--- /dev/null
+++ b/board/qemu-mips/Makefile
@@ -0,0 +1,45 @@
+#
+# (C) Copyright 2003-2006
+# Wolfgang Denk, DENX Software Engineering, wd at 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
+
+#########################################################################
diff --git a/board/qemu-mips/README b/board/qemu-mips/README
new file mode 100644
index 0000000..39570b1
--- /dev/null
+++ b/board/qemu-mips/README
@@ -0,0 +1,11 @@
+By Vlad Lungu vlad at 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.
diff --git a/board/qemu-mips/config.mk b/board/qemu-mips/config.mk
new file mode 100644
index 0000000..4d4078a
--- /dev/null
+++ b/board/qemu-mips/config.mk
@@ -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
diff --git a/board/qemu-mips/flash.c b/board/qemu-mips/flash.c
new file mode 100644
index 0000000..e988272
--- /dev/null
+++ b/board/qemu-mips/flash.c
@@ -0,0 +1,40 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd at 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);
+}
diff --git a/board/qemu-mips/lowlevel_init.S b/board/qemu-mips/lowlevel_init.S
new file mode 100644
index 0000000..28166bc
--- /dev/null
+++ b/board/qemu-mips/lowlevel_init.S
@@ -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
diff --git a/board/qemu-mips/qemu-mips.c b/board/qemu-mips/qemu-mips.c
new file mode 100644
index 0000000..23d4540
--- /dev/null
+++ b/board/qemu-mips/qemu-mips.c
@@ -0,0 +1,89 @@
+/*
+ * (C) Copyright 2007
+ * Vlad Lungu vlad at 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;
+}
diff --git a/board/qemu-mips/u-boot.lds b/board/qemu-mips/u-boot.lds
new file mode 100644
index 0000000..0e87abc
--- /dev/null
+++ b/board/qemu-mips/u-boot.lds
@@ -0,0 +1,72 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk Engineering, <wd at 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 = .;
+}
diff --git a/include/configs/qemu-mips.h b/include/configs/qemu-mips.h
new file mode 100644
index 0000000..8fdb8e3
--- /dev/null
+++ b/include/configs/qemu-mips.h
@@ -0,0 +1,164 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd at 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 */
--
1.5.2.2
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