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-rw-r--r--Host/libnxt-0.3/flash_write/Makefile19
-rw-r--r--Host/libnxt-0.3/flash_write/crt0.s37
-rw-r--r--Host/libnxt-0.3/flash_write/flash.c46
3 files changed, 102 insertions, 0 deletions
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 <david.anderson@calixo.net>
+ *
+ * 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 <david.anderson@calixo.net>
+ *
+ * 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));
+}