[U-Boot] [PATCH v2 01/10] MIPS: qemu-malta: add support for emulated MIPS Malta board
Daniel Schwierzeck
daniel.schwierzeck at gmail.com
Sat Feb 2 20:34:31 CET 2013
2013/2/2 Gabor Juhos <juhosg at openwrt.org>:
> Add minimal support for the MIPS Malta CoreLV board
> emulated by Qemu. The only supported peripherial is
> the UART.
>
> This is enough to boot U-Boot to the command prompt
> both in little and big endian mode.
>
> Signed-off-by: Gabor Juhos <juhosg at openwrt.org>
> Cc: Daniel Schwierzeck <daniel.schwierzeck at googlemail.com>
> ---
> Changes since v1:
> - remove custom u-boot.lds file
> - rebased against mips/testing
>
> Changes since RFC: ---
>
> ---
> Screenshot:
>
> U-Boot 2013.01-00075-g80fa5c7 (Feb 02 2013 - 16:59:19)
>
> Board: MIPS Malta CoreLV (Qemu)
> DRAM: 256 MiB
> Using default environment
>
> In: serial
> Out: serial
> Err: serial
> qemu-malta # version
>
> U-Boot 2013.01-00075-g80fa5c7 (Feb 02 2013 - 16:59:19)
> mips-openwrt-linux-uclibc-gcc (Linaro GCC 4.6-2012.12) 4.6.4 20121210
> (prerelease)
> GNU ld (GNU Binutils) 2.22
> qemu-malta # help
> ? - alias for 'help'
> base - print or set address offset
> bdinfo - print Board Info structure
> boot - boot default, i.e., run 'bootcmd'
> bootd - boot default, i.e., run 'bootcmd'
> bootm - boot application image from memory
> cmp - memory compare
> coninfo - print console devices and information
> cp - memory copy
> crc32 - checksum calculation
> echo - echo args to console
> editenv - edit environment variable
> env - environment handling commands
> go - start application at address 'addr'
> help - print command description/usage
> iminfo - print header information for application image
> imxtract- extract a part of a multi-image
> itest - return true/false on integer compare
> loop - infinite loop on address range
> md - memory display
> mm - memory modify (auto-incrementing address)
> mtest - simple RAM read/write test
> mw - memory write (fill)
> nm - memory modify (constant address)
> printenv- print environment variables
> reset - Perform RESET of the CPU
> run - run commands in an environment variable
> setenv - set environment variables
> sleep - delay execution for some time
> source - run script from memory
> version - print monitor, compiler and linker version
> qemu-malta #
> ---
> arch/mips/include/asm/malta.h | 16 ++++++
> board/qemu-malta/Makefile | 45 +++++++++++++++++
> board/qemu-malta/lowlevel_init.S | 19 +++++++
> board/qemu-malta/qemu-malta.c | 20 ++++++++
> boards.cfg | 2 +
> include/configs/qemu-malta.h | 104 ++++++++++++++++++++++++++++++++++++++
> 6 files changed, 206 insertions(+)
> create mode 100644 arch/mips/include/asm/malta.h
> create mode 100644 board/qemu-malta/Makefile
> create mode 100644 board/qemu-malta/lowlevel_init.S
> create mode 100644 board/qemu-malta/qemu-malta.c
> create mode 100644 include/configs/qemu-malta.h
>
> diff --git a/arch/mips/include/asm/malta.h b/arch/mips/include/asm/malta.h
> new file mode 100644
> index 0000000..b215164
> --- /dev/null
> +++ b/arch/mips/include/asm/malta.h
> @@ -0,0 +1,16 @@
> +/*
> + * Copyright (C) 2013 Gabor Juhos <juhosg at openwrt.org>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License version 2 as published
> + * by the Free Software Foundation.
> + */
> +
> +#ifndef _MIPS_ASM_MALTA_H
> +#define _MIPS_ASM_MALTA_H
> +
> +#define MALTA_IO_PORT_BASE 0x10000000
> +
> +#define MALTA_UART_BASE (MALTA_IO_PORT_BASE + 0x3f8)
> +
> +#endif /* _MIPS_ASM_MALTA_H */
> diff --git a/board/qemu-malta/Makefile b/board/qemu-malta/Makefile
> new file mode 100644
> index 0000000..6251bb8
> --- /dev/null
> +++ b/board/qemu-malta/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).o
> +
> +COBJS = $(BOARD).o
> +SOBJS = lowlevel_init.o
> +
> +SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
> +OBJS := $(addprefix $(obj),$(COBJS))
> +SOBJS := $(addprefix $(obj),$(SOBJS))
> +
> +$(LIB): $(OBJS) $(SOBJS)
> + $(call cmd_link_o_target, $(OBJS) $(SOBJS))
> +
> +#########################################################################
> +
> +# defines $(obj).depend target
> +include $(SRCTREE)/rules.mk
> +
> +sinclude $(obj).depend
> +
> +#########################################################################
> diff --git a/board/qemu-malta/lowlevel_init.S b/board/qemu-malta/lowlevel_init.S
> new file mode 100644
> index 0000000..c5c5bd9
> --- /dev/null
> +++ b/board/qemu-malta/lowlevel_init.S
> @@ -0,0 +1,19 @@
> +/*
> + * Copyright (C) 2013 Gabor Juhos <juhosg at openwrt.org>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License version 2 as published
> + * by the Free Software Foundation.
> + */
> +
> +#include <asm/regdef.h>
> +
> + .text
> + .set noreorder
> + .set mips32
> +
> + .globl lowlevel_init
> +lowlevel_init:
> +
> + jr ra
> + nop
can't we use CONFIG_SKIP_LOWLEVEL_INIT and drop this file?
We neither need to initialize a memory controller nor caches on Qemu.
> diff --git a/board/qemu-malta/qemu-malta.c b/board/qemu-malta/qemu-malta.c
> new file mode 100644
> index 0000000..9ba711d
> --- /dev/null
> +++ b/board/qemu-malta/qemu-malta.c
> @@ -0,0 +1,20 @@
> +/*
> + * Copyright (C) 2013 Gabor Juhos <juhosg at openwrt.org>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License version 2 as published
> + * by the Free Software Foundation.
> + */
> +
> +#include <common.h>
> +
> +phys_size_t initdram(int board_type)
> +{
> + return CONFIG_SYS_MEM_SIZE;
> +}
> +
> +int checkboard(void)
> +{
> + puts("Board: MIPS Malta CoreLV (Qemu)\n");
> + return 0;
> +}
> diff --git a/boards.cfg b/boards.cfg
> index 98f7a14..7f919e5 100644
> --- a/boards.cfg
> +++ b/boards.cfg
> @@ -426,6 +426,8 @@ qemu_mips mips mips32 qemu-mips -
> qemu_mipsel mips mips32 qemu-mips - - qemu-mips:SYS_LITTLE_ENDIAN
> qemu_mips64 mips mips64 qemu-mips - - qemu-mips64:SYS_BIG_ENDIAN
> qemu_mips64el mips mips64 qemu-mips - - qemu-mips64:SYS_LITTLE_ENDIAN
> +qemu_malta mips mips32 qemu-malta - - qemu-malta:MIPS32,SYS_BIG_ENDIAN
> +qemu_maltael mips mips32 qemu-malta - - qemu-malta:MIPS32,SYS_LITTLE_ENDIAN
> vct_platinum mips mips32 vct micronas - vct:VCT_PLATINUM
> vct_platinumavc mips mips32 vct micronas - vct:VCT_PLATINUMAVC
> vct_platinumavc_onenand mips mips32 vct micronas - vct:VCT_PLATINUMAVC,VCT_ONENAND
> diff --git a/include/configs/qemu-malta.h b/include/configs/qemu-malta.h
> new file mode 100644
> index 0000000..c72c5dd
> --- /dev/null
> +++ b/include/configs/qemu-malta.h
> @@ -0,0 +1,104 @@
> +/*
> + * Copyright (C) 2013 Gabor Juhos <juhosg at openwrt.org>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License version 2 as published
> + * by the Free Software Foundation.
> + */
> +
> +#ifndef _QEMU_MALTA_CONFIG_H
> +#define _QEMU_MALTA_CONFIG_H
> +
> +#include <asm/addrspace.h>
> +#include <asm/malta.h>
> +
> +/*
> + * System configuration
> + */
> +#define CONFIG_QEMU_MALTA
we should extend qemu-mips.h and define CONFIG_QEMU_MALTA
respectively CONFIG_QEMU_MALTA in boards.cfg to avoid redundant code.
All differences could be handled with these options.
> +
> +/*
> + * CPU Configuration
> + */
> +#define CONFIG_SYS_MHZ 250 /* arbitrary value */
> +#define CONFIG_SYS_MIPS_TIMER_FREQ (CONFIG_SYS_MHZ * 1000000)
> +#define CONFIG_SYS_HZ 1000
> +
> +#define CONFIG_SYS_DCACHE_SIZE 16384 /* arbitrary value */
> +#define CONFIG_SYS_ICACHE_SIZE 16384 /* arbitrary value */
> +#define CONFIG_SYS_CACHELINE_SIZE 32 /* arbitrary value */
> +
> +#define CONFIG_SWAP_IO_SPACE
> +
> +/*
> + * Memory map
> + */
> +#define CONFIG_SYS_TEXT_BASE 0xbfc00000 /* Rom version */
> +#define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_TEXT_BASE
> +
> +#define CONFIG_SYS_SDRAM_BASE 0x80000000 /* Cached addr */
> +#define CONFIG_SYS_MEM_SIZE (256 * 1024 * 1024)
> +
> +#define CONFIG_SYS_INIT_SP_OFFSET 0x400000
> +
> +#define CONFIG_SYS_LOAD_ADDR 0x81000000
> +#define CONFIG_SYS_MEMTEST_START 0x80100000
> +#define CONFIG_SYS_MEMTEST_END 0x80800000
> +
> +#define CONFIG_SYS_MALLOC_LEN (128 * 1024)
> +#define CONFIG_SYS_BOOTPARAMS_LEN (128 * 1024)
> +
> +/*
> + * Console configuration
> + */
> +#if defined(CONFIG_SYS_LITTLE_ENDIAN)
> +#define CONFIG_SYS_PROMPT "qemu-maltael # "
> +#else
> +#define CONFIG_SYS_PROMPT "qemu-malta # "
> +#endif
> +
> +#define CONFIG_SYS_CBSIZE 256
> +#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
> + sizeof(CONFIG_SYS_PROMPT) + 16)
> +#define CONFIG_SYS_MAXARGS 16
> +
> +#define CONFIG_AUTO_COMPLETE
> +#define CONFIG_CMDLINE_EDITING
> +
> +/*
> + * Serial driver
> + */
> +#define CONFIG_BAUDRATE 115200
> +
> +#define CONFIG_SYS_NS16550
> +#define CONFIG_SYS_NS16550_SERIAL
> +#define CONFIG_SYS_NS16550_REG_SIZE 1
> +#define CONFIG_SYS_NS16550_CLK 115200
> +#define CONFIG_SYS_NS16550_COM1 CKSEG1ADDR(MALTA_UART_BASE)
> +#define CONFIG_CONS_INDEX 1
> +
> +/*
> + * Environment
> + */
> +#define CONFIG_ENV_IS_NOWHERE
> +#define CONFIG_ENV_SIZE 0x10000
> +
> +/*
> + * Flash configuration
> + */
> +#define CONFIG_SYS_NO_FLASH
> +
> +/*
> + * Commands
> + */
> +#include <config_cmd_default.h>
> +
> +#undef CONFIG_CMD_FPGA
> +#undef CONFIG_CMD_LOADB
> +#undef CONFIG_CMD_LOADS
> +#undef CONFIG_CMD_NET
> +#undef CONFIG_CMD_NFS
> +
> +#define CONFIG_SYS_LONGHELP /* verbose help, undef to save memory */
> +
> +#endif /* _QEMU_MALTA_CONFIG_H */
> --
> 1.7.10
>
--
Best regards,
Daniel
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