diff options
Diffstat (limited to 'board')
| -rw-r--r-- | board/qemu-mips/Makefile | 45 | ||||
| -rw-r--r-- | board/qemu-mips/README | 11 | ||||
| -rw-r--r-- | board/qemu-mips/config.mk | 10 | ||||
| -rw-r--r-- | board/qemu-mips/flash.c | 40 | ||||
| -rw-r--r-- | board/qemu-mips/lowlevel_init.S | 41 | ||||
| -rw-r--r-- | board/qemu-mips/qemu-mips.c | 89 | ||||
| -rw-r--r-- | board/qemu-mips/u-boot.lds | 72 |
7 files changed, 308 insertions, 0 deletions
diff --git a/board/qemu-mips/Makefile b/board/qemu-mips/Makefile new file mode 100644 index 0000000000..23be447420 --- /dev/null +++ b/board/qemu-mips/Makefile @@ -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 + +######################################################################### diff --git a/board/qemu-mips/README b/board/qemu-mips/README new file mode 100644 index 0000000000..39570b13db --- /dev/null +++ b/board/qemu-mips/README @@ -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. diff --git a/board/qemu-mips/config.mk b/board/qemu-mips/config.mk new file mode 100644 index 0000000000..4d4078a407 --- /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 0000000000..e98827201f --- /dev/null +++ b/board/qemu-mips/flash.c @@ -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); +} diff --git a/board/qemu-mips/lowlevel_init.S b/board/qemu-mips/lowlevel_init.S new file mode 100644 index 0000000000..28166bceba --- /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 0000000000..a6ad7b9ab3 --- /dev/null +++ b/board/qemu-mips/qemu-mips.c @@ -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; +} diff --git a/board/qemu-mips/u-boot.lds b/board/qemu-mips/u-boot.lds new file mode 100644 index 0000000000..c2a85661e4 --- /dev/null +++ b/board/qemu-mips/u-boot.lds @@ -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 = .; +} |
