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git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5153 42af7a65-404d-4744-a932-0658087f49c3
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patacongo
2012-09-17 18:18:44 +00:00
commit 57623d42eb
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nuttx/tools/pic32mx/Makefile
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############################################################################
# tools/pic32mx//Makefile
#
# Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name NuttX nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################################
all: mkpichex
default: mkpichex
.PHONY: clean
# Add CFLAGS=-g on the make command line to build debug versions
CFLAGS = -O2 -Wall -I.
# mkpichex - Convert virtual addresses in nuttx.hex to physical addresses
mkconfig: mkpichex.c mkpichex.c
@gcc $(CFLAGS) -o mkpichex mkpichex.c
clean:
@rm -f *.o *.a *~ .*.swp
@rm -f mkpichex mkpichex.exe
nuttx/tools/pic32mx/mkpichex.c
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/****************************************************************************
* tools/pic32mx//mkpichex.c
*
* Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define MAX_LINE 1024
/* Line offsets */
#define START_OFFSET 0
#define LEN_OFFSET 1
#define ADDR_OFFSET (LEN_OFFSET + 2)
#define TYPE_OFFSET (ADDR_OFFSET + 4)
#define PAYLOAD_OFFSET (TYPE_OFFSET + 2)
#define CHKSUM_OFFSET(n) (PAYLOAD_OFFSET+2*(n))
/* Record types:
*
* 00, data record, contains data and 16-bit address. The format described
* above.
* 01, End Of File record, a file termination record. No data. Has to be
* the last line of the file, only one per file permitted. Usually
* ':00000001FF'. Originally the End Of File record could contain a
* start address for the program being loaded, e.g. :00AB2F0125
* would make a jump to address AB2F. This was convenient when programs
* were loaded from punched paper tape.
* 02, Extended Segment Address Record, segment-base address. Used when 16
* bits are not enough, identical to 80x86 real mode addressing. The
* address specified by the 02 record is multiplied by 16 (shifted 4
* bits left) and added to the subsequent 00 record addresses. This
* allows addressing of up to a megabyte of address space. The address
* field of this record has to be 0000, the byte count is 02 (the segment
* is 16-bit). The least significant hex digit of the segment address is
* always 0.
* 03, Start Segment Address Record. For 80x86 processors, it specifies the
* initial content of the CS:IP registers. The address field is 0000, the
* byte count is 04, the first two bytes are the CS value, the latter two
* are the IP value.
* 04, Extended Linear Address Record, allowing for fully 32 bit addressing.
* The address field is 0000, the byte count is 02. The two data bytes
* represent the upper 16 bits of the 32 bit address, when combined with
* the address of the 00 type record.
* 05, Start Linear Address Record. The address field is 0000, the byte
* count is 04. The 4 data bytes represent the 32-bit value loaded into
* the EIP register of the 80386 and higher CPU.
*/
#define TYPE_DATA 0
#define TYPE_EOF 1
#define TYPE_EXTSEG 2
#define TYPE_STARTSEG 3
#define TYPE_EXTLIN 4
#define TYPE_STARTLIN 5
/****************************************************************************
* Private Types
****************************************************************************/
struct hex_s
{
unsigned char len; /* Length of the data payload */
unsigned char type; /* Record type */
unsigned short addr; /* Lower 16-bit address */
};
/****************************************************************************
* Private Data
****************************************************************************/
static char line[MAX_LINE+1];
/****************************************************************************
* Private Functions
****************************************************************************/
static inline char *getfilepath(const char *path, const char *name, const char *extension)
{
snprintf(line, MAX_LINE, "%s/%s.%s", path, name, extension);
line[MAX_LINE] = '\0';
return strdup(line);
}
static void show_usage(const char *progname)
{
fprintf(stderr, "USAGE: %s <abs path to nuttx.hex>\n", progname);
exit(1);
}
static unsigned char get4(char hex)
{
if (hex >= '0' && hex <= '9')
{
return hex - '0';
}
else if (hex >= 'a' && hex <= 'f')
{
return hex - 'a' + 10;
}
else if (hex >= 'A' && hex <= 'F')
{
return hex - 'A' + 10;
}
fprintf(stderr, "Bad hex character code: %s\n", line);
exit(2);
}
static unsigned char get8(const char *ptr)
{
return get4(ptr[0]) << 4 | get4(ptr[1]);
}
static unsigned short get16(const char *ptr)
{
return (unsigned short)get8(&ptr[0]) << 8 | (unsigned short)get8(&ptr[2]);
}
static int parse_line(struct hex_s *hexline)
{
/* :LLAAAATT... */
if (line[START_OFFSET] != ':')
{
fprintf(stderr, "Bad start code: %s\n", line);
return 1;
}
hexline->len = get8(&line[LEN_OFFSET]);
hexline->addr = get16(&line[ADDR_OFFSET]);
hexline->type = get8(&line[TYPE_OFFSET]);
return 0;
}
#if 0
static unsigned char checksum(chksum_ndx)
{
int chksum = 0;
int ndx;
for (ndx = 1; ndx < chksum_ndx; ndx += 2)
{
chksum += (int)get8(&line[ndx]);
}
return (unsigned char)((-chksum) & 0xff);
}
#endif
static void adjust_extlin(struct hex_s *hexline)
{
unsigned short segment;
int chksum;
/* Make sure that the payload is exactly 2 bytes */
if (hexline->len != 2)
{
fprintf(stderr, "Bad length on extended segment address record\n");
fprintf(stderr, " %s", line);
}
/* And the address field is supposed to be zero */
if (hexline->addr != 0)
{
fprintf(stderr, "Bad address on extended segment address record\n");
fprintf(stderr, " %s", line);
}
/* Decode the 2 byte payload */
segment = get16(&line[PAYLOAD_OFFSET]);
/* Convert the address to a 29-bit physical address */
segment &= 0x1fff;
/* Recalculate the checksum and make sure that there is a null terminator
* Since len=2, addr=0, type=4, the is a trivial calculation.
*/
chksum = (-(segment + (segment >> 8) + 6)) & 0xff;
/* Then create the new output record */
snprintf(line, MAX_LINE-PAYLOAD_OFFSET, ":02000004%04X%02X\n", segment, chksum);
}
/****************************************************************************
* Public Functions
****************************************************************************/
int main(int argc, char **argv, char **envp)
{
struct hex_s hexline;
char *srcfile;
char *destfile;
FILE *src;
FILE *dest;
if (argc != 2)
{
fprintf(stderr, "Unexpected number of arguments\n");
show_usage(argv[0]);
}
srcfile = getfilepath(argv[1], "nuttx", "hex");
if (!srcfile)
{
fprintf(stderr, "getfilepath failed\n");
exit(2);
}
destfile = getfilepath(argv[1], "nuttx", "tmp");
if (!destfile)
{
fprintf(stderr, "getfilepath failed\n");
exit(2);
}
src = fopen(srcfile, "r");
if (!src)
{
fprintf(stderr, "open %s failed: %s\n", srcfile, strerror(errno));
exit(3);
}
dest = fopen(destfile, "w");
if (!dest)
{
fprintf(stderr, "open %s failed: %s\n", destfile, strerror(errno));
exit(3);
}
/* Read each line from the source file */
while (fgets(line, MAX_LINE, src) != NULL)
{
if (parse_line(&hexline))
{
fprintf(stderr, "Failed to parse line\n");
exit(1);
}
/* Adjust 'Extended Segment Address Records'. */
if (hexline.type == TYPE_EXTLIN)
{
adjust_extlin(&hexline);
}
fputs(line, dest);
}
fclose(src);
fclose(dest);
/* Remove the original nuttx.hex file */
if (remove(srcfile) != 0)
{
fprintf(stderr, "Failed to remove the old '%s'\n", srcfile);
}
/* Rename the new nuttx.tmp file to nuttx.hex */
if (rename(destfile, srcfile) != 0)
{
fprintf(stderr, "Failed to rename '%s' to '%s'\n", destfile, srcfile);
}
return 0;
}