From 58494668ef864db0ad6cd35eca62106cbbed0543 Mon Sep 17 00:00:00 2001 From: TC Wan Date: Wed, 22 Dec 2010 17:30:29 +0800 Subject: added libnxt as a dependent library Added libnxt as a dependent library instead of using system provided package. This is mainly due to the difficulty in getting libnxt installed using MacPorts. --- Host/libnxt-0.3/flash_write/Makefile | 19 +++++++++++++++ Host/libnxt-0.3/flash_write/crt0.s | 37 +++++++++++++++++++++++++++++ Host/libnxt-0.3/flash_write/flash.c | 46 ++++++++++++++++++++++++++++++++++++ 3 files changed, 102 insertions(+) create mode 100644 Host/libnxt-0.3/flash_write/Makefile create mode 100644 Host/libnxt-0.3/flash_write/crt0.s create mode 100644 Host/libnxt-0.3/flash_write/flash.c (limited to 'Host/libnxt-0.3/flash_write') diff --git a/Host/libnxt-0.3/flash_write/Makefile b/Host/libnxt-0.3/flash_write/Makefile new file mode 100644 index 0000000..93bb888 --- /dev/null +++ b/Host/libnxt-0.3/flash_write/Makefile @@ -0,0 +1,19 @@ +#all: +# gcc -Wall -O0 -mcpu=arm7tdmi-s -mapcs -mthumb-interwork -o flash.o flash.c -nostartfiles -nodefaultlibs -nostdlib -Wl,-e,main +# objcopy -Obinary -j.text flash.o flash.bin +# objdump --disassemble-all -bbinary -marm7tdmi flash.bin > flash.asm +# + +CC=`which arm-elf-gcc` +AS=`which arm-elf-as` +LD=`which arm-elf-ld` +OBJCOPY=`which arm-elf-objcopy` + +all: + $(CC) -W -Wall -O3 -msoft-float -mcpu=arm7tdmi -mapcs -c -o flash.o flash.c + $(AS) --warn -mfpu=softfpa -mcpu=arm7tdmi -mapcs-32 -o crt0.o crt0.s + $(LD) -O3 --gc-sections crt0.o flash.o -o flash.elf + $(OBJCOPY) -O binary flash.elf flash.bin + +clean: + rm -f flash.o crt0.o flash.elf flash.bin diff --git a/Host/libnxt-0.3/flash_write/crt0.s b/Host/libnxt-0.3/flash_write/crt0.s new file mode 100644 index 0000000..680573b --- /dev/null +++ b/Host/libnxt-0.3/flash_write/crt0.s @@ -0,0 +1,37 @@ +/** + * NXT bootstrap interface; NXT onboard flashing driver bootstrap. + * + * Copyright 2006 David Anderson + * + * 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 + */ + +.text +.align 4 +.globl _start + +_start: + /* Initialize the stack */ + mov sp, #0x210000 + + /* Preserve old link register */ + stmfd sp!, {lr} + + /* Call main */ + bl do_flash_write + + /* Return */ + ldmfd sp!, {pc} diff --git a/Host/libnxt-0.3/flash_write/flash.c b/Host/libnxt-0.3/flash_write/flash.c new file mode 100644 index 0000000..824a088 --- /dev/null +++ b/Host/libnxt-0.3/flash_write/flash.c @@ -0,0 +1,46 @@ +/** + * NXT bootstrap interface; NXT onboard flashing driver. + * + * Copyright 2006 David Anderson + * + * 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 + */ + +#define VINTPTR(addr) ((volatile unsigned int *)(addr)) +#define VINT(addr) (*(VINTPTR(addr))) + +#define USER_PAGE VINTPTR(0x00202100) +#define USER_PAGE_NUM VINT(0x00202300) + +#define FLASH_BASE VINTPTR(0x00100000) +#define FLASH_CMD_REG VINT(0xFFFFFF64) +#define FLASH_STATUS_REG VINT(0xFFFFFF68) +#define OFFSET_PAGE_NUM ((USER_PAGE_NUM & 0x000003FF) << 8) +#define FLASH_CMD_WRITE (0x5A000001 + OFFSET_PAGE_NUM) + +void do_flash_write(void) +{ + unsigned long i; + + while (!(FLASH_STATUS_REG & 0x1)); + + for (i = 0; i < 64; i++) + FLASH_BASE[(USER_PAGE_NUM*64)+i] = USER_PAGE[i]; + + FLASH_CMD_REG = FLASH_CMD_WRITE; + + while (!(FLASH_STATUS_REG & 0x1)); +} -- cgit v1.2.3