[Armadeus-commitlog] SF.net SVN: armadeus:[924] trunk/target/linux/debug/fpgaregs
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[Armadeus-commitlog] SF.net SVN: armadeus:[924] trunk/target/linux/debug/fpgaregs
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From: <Fa...@us...> - 2008-12-04 16:37:09
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Revision: 924
http://armadeus.svn.sourceforge.net/armadeus/?rev=924&view=rev
Author: FabM
Date: 2008-12-04 16:37:03 +0000 (Thu, 04 Dec 2008)
Log Message:
-----------
[LINUX][SOFTWARE] fpgaregs update
Modified Paths:
--------------
trunk/target/linux/debug/fpgaregs/Makefile
trunk/target/linux/debug/fpgaregs/fpgaregs.c
Modified: trunk/target/linux/debug/fpgaregs/Makefile
===================================================================
--- trunk/target/linux/debug/fpgaregs/Makefile 2008-12-04 15:58:13 UTC (rev 923)
+++ trunk/target/linux/debug/fpgaregs/Makefile 2008-12-04 16:37:03 UTC (rev 924)
@@ -1,9 +1,12 @@
-CC=../../../../buildroot/build_arm/staging_dir/bin/arm-linux-gcc
+ifeq ($(CC),cc)
+ CC=arm-linux-gcc
+endif
+
all: fpgaregs
fpgaregs: fpgaregs.c
- $(CC) -Wall fpgaregs.c -o $@
+ $(CC) -mcpu=arm920t -Wall fpgaregs.c -o $@
clean:
rm -f *.o
Modified: trunk/target/linux/debug/fpgaregs/fpgaregs.c
===================================================================
--- trunk/target/linux/debug/fpgaregs/fpgaregs.c 2008-12-04 15:58:13 UTC (rev 923)
+++ trunk/target/linux/debug/fpgaregs/fpgaregs.c 2008-12-04 16:37:03 UTC (rev 924)
@@ -1,147 +1,120 @@
-/*
- * fpgaregs.h - Tool to display and modify fpga registers from Linux's userspace
+/************************************************************************
+ * a program to write/read 16/32bits values on fpga address map using mmap()
+ * 11 october 2008
+ * fpgaregs_mmap.c
*
- * Author/Maintainer: --- armadeus -----
- * Derivated from pxaregs (c) Copyright 2002 by M&N Logistik-L�ungen Online GmbH
- *
- * This tool is placed under the GPL.
+ * (c) Copyright 2008 Armadeus project
+ * Fabien Marteau <fab...@ar...>
+ * Modified by Sebastien Van Cauwenberghe <sv...@gm...>
*
-*/
+ * A simple driver for reading and writing on
+ * fpga through the character file /dev/mem
+ *
+ * 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, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ ***********************************************************************/
#include <stdio.h>
-#include <unistd.h>
#include <stdlib.h>
-#include <string.h>
-#include <sys/mman.h>
-#include <sys/types.h>
+
+/* file management */
#include <sys/stat.h>
#include <fcntl.h>
-#include <ctype.h>
+/* as name said */
+#include <signal.h>
-//#define DEBUG TRUE
+/* sleep, write(), read() */
+#include <unistd.h>
-// fd for /dev/mem
-static int fd = -1;
-typedef unsigned short u16;
-typedef unsigned int u32;
+/* converting string */
+#include <string.h>
-#define FPGA_BASE_ADDR 0x12000000
-// Size of mmapping:
-#define MAP_SIZE 4096
-#define MAP_MASK ( MAP_SIZE - 1 )
+/* memory management */
+#include <sys/mman.h>
+#define FPGA_ADDRESS 0x12000000
-// Get value of the register at the given address
-static u16 getmem(u32 addr)
-{
- void *map, *regaddr;
- u32 val;
-#ifdef DEBUG
- printf("getmem(0x%04x)\n", addr);
-#endif // DEBUG
- if (fd == -1)
- {
- fd = open("/dev/mem", O_RDWR | O_SYNC);
- if (fd<0)
- {
- perror("open(\"/dev/mem\")");
- exit(1);
- }
- }
+#define WORD_ACCESS (2)
+#define LONG_ACCESS (4)
- map = mmap(0, MAP_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, addr & ~MAP_MASK );
- if (map == (void*)-1 )
- {
- perror("mmap()");
- exit(1);
- }
- regaddr = map + (addr & MAP_MASK);
-
- val = *(u32*) regaddr;
- munmap(0,MAP_SIZE);
- printf("read 0x%04x at 0x%08x\n", val, addr);
-
- return val;
+void displayResult(char* text, unsigned int accesstype, unsigned int value, unsigned int address)
+{
+ if( accesstype == WORD_ACCESS )
+ printf("%s %04x at %08x\n",text, (unsigned short)value,address);
+ else
+ printf("%s %08x at %08x\n",text, value,address);
}
-// Modify register value at given address
-static void putmem(u32 addr, u32 val)
+
+int main(int argc, char *argv[])
{
- void *map=0;
- void *regaddr=0;
- static int fd = -1;
+ unsigned short address;
+ unsigned int value;
+ int ffpga, accesstype = LONG_ACCESS;
+ void* ptr_fpga;
- //printf("putmem(0x%08x, 0x%08x)\n", addr, val);
+ if ((argc < 3) || (argc > 4)){
+ printf("invalid arguments number\nfpgaregs [w,l] fpga_reg_add [value].\n\tw: word access, l: long access\n\
+\tEx: fpgaregs w 0x10 0x1234, fpgaregs l 0x10 0x12345678\n");
+ return -1;
+ }
- if (fd == -1)
- {
- fd = open("/dev/mem", O_RDWR | O_SYNC);
- if (fd<0)
- {
- perror("open(\"/dev/mem\")");
- exit(1);
- }
- }
+ ffpga=open("/dev/mem",O_RDWR|O_SYNC);
+ if(ffpga<0){
+ printf("can't open file /dev/mem\n");
+ return -1;
+ }
- map = mmap(0, MAP_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, addr & ~MAP_MASK );
- if (map == (void*)-1 )
- {
- perror("mmap()");
- exit(1);
- }
- regaddr = map + (addr & MAP_MASK);
- // printf("Mapped addr: 0x%04x\n", regaddr);
+ ptr_fpga = mmap (0, 8192, PROT_READ|PROT_WRITE, MAP_SHARED, ffpga, FPGA_ADDRESS);
+ if (ptr_fpga == MAP_FAILED)
+ {
+ printf ("mmap failed\n");
+ return -1;
+ }
- *(u32*) regaddr = val;
- munmap(0,MAP_SIZE);
-}
+ address = (unsigned int)strtol(argv[2], (char **)NULL, 16);
-u16 toInt(char * string)
-{
- char temp;
- u16 result = 0;
+ if(argc<3){
+ printf("invalid command line");
+ }
+ else {
+ if( *(argv[1]) == 'w' )
+ accesstype = WORD_ACCESS;
+
+ /* write value at address */
+ if(argc == 4){
+ value = strtoul(argv[3], (char **)NULL, 16);
+ if (accesstype == WORD_ACCESS)
+ *(unsigned short*)(ptr_fpga+(address)) = (unsigned short)value;
+ else
+ *(unsigned int*)(ptr_fpga+(address)) = (unsigned int)value;
- while( *string )
- {
- temp = *string;
- if( (temp>='0') && (temp<='9') )
- temp = temp - '0';
- else if( (temp>='a') && (temp<='f') )
- temp = temp -'a' + 10;
-
- result = (result<<4) + temp;
- string++;
- }
- return result;
-}
-
-
-/////////////////////////////////////////////////////////////////////////////////////
-// MAIN
-//
-int main(int argc, char *argv[])
-{
- // Dump the content of the provided register
- if (argc == 2)
- {
- getmem(toInt(argv[1])+FPGA_BASE_ADDR);
- return 0;
- }
-
- // Put value to given register
- if (argc == 3)
- {
- putmem( toInt(argv[1])+FPGA_BASE_ADDR, toInt(argv[2]) );
- return 0;
+ displayResult("Write", accesstype, value, address);
+
+ /* read address value */
+ }else if(argc == 3){
+ if (accesstype == WORD_ACCESS)
+ value = *(unsigned short*)(ptr_fpga+(address));
+ else
+ value = *(unsigned int*)(ptr_fpga+(address));
+
+ displayResult("Read", accesstype, value, address);
}
-
- // In all other cases, print Usage
- printf("Usage: fpgareg addr [value]\n"
- "addr: address in fpga (max 2ffe)\n"
- "value: value to write (16bit max ffff). Option \n");
-
- return 1;
+ }
+ close(ffpga);
+ return 0;
}
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