forked from auracaster/openocd
cc29abe9d1
The new committed files add some warning from the static analyser 'sparse': - Don't assign pointer to 0, use NULL. - switch with no cases. Fix them. Change-Id: I2c02d629bd80b71c8e42553be5d9388bb9b6bcd0 Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Reviewed-on: https://review.openocd.org/c/openocd/+/7668 Tested-by: jenkins
106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
/***************************************************************************
|
|
* Copyright (C) 2022 by Daniel Anselmi *
|
|
* danselmi@gmx.ch *
|
|
***************************************************************************/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
#include "lattice_bit.h"
|
|
#include "raw_bit.h"
|
|
#include "pld.h"
|
|
#include <helper/system.h>
|
|
#include <helper/log.h>
|
|
#include <helper/binarybuffer.h>
|
|
|
|
enum read_bit_state {
|
|
SEEK_HEADER_START,
|
|
SEEK_HEADER_END,
|
|
SEEK_PREAMBLE,
|
|
SEEK_ID,
|
|
DONE,
|
|
};
|
|
|
|
static int lattice_read_bit_file(struct lattice_bit_file *bit_file, const char *filename, enum lattice_family_e family)
|
|
{
|
|
int retval = cpld_read_raw_bit_file(&bit_file->raw_bit, filename);
|
|
if (retval != ERROR_OK)
|
|
return retval;
|
|
|
|
bit_file->part = NULL;
|
|
bit_file->has_id = false;
|
|
enum read_bit_state state = SEEK_HEADER_START;
|
|
for (size_t pos = 1; pos < bit_file->raw_bit.length && state != DONE; ++pos) {
|
|
switch (state) {
|
|
case SEEK_HEADER_START:
|
|
if (bit_file->raw_bit.data[pos] == 0 && bit_file->raw_bit.data[pos - 1] == 0xff)
|
|
state = SEEK_HEADER_END;
|
|
break;
|
|
case SEEK_HEADER_END:
|
|
if (pos + 6 < bit_file->raw_bit.length &&
|
|
strncmp((const char *)(bit_file->raw_bit.data + pos), "Part: ", 6) == 0) {
|
|
bit_file->part = (const char *)bit_file->raw_bit.data + pos + 6;
|
|
LOG_INFO("part found: %s\n", bit_file->part);
|
|
} else if (bit_file->raw_bit.data[pos] == 0xff && bit_file->raw_bit.data[pos - 1] == 0) {
|
|
bit_file->offset = pos;
|
|
state = (family != LATTICE_ECP2 && family != LATTICE_ECP3) ? SEEK_PREAMBLE : DONE;
|
|
}
|
|
break;
|
|
case SEEK_PREAMBLE:
|
|
if (pos >= 4) {
|
|
uint32_t preamble = be_to_h_u32(bit_file->raw_bit.data + pos - 3);
|
|
switch (preamble) {
|
|
case 0xffffbdb3:
|
|
state = SEEK_ID;
|
|
break;
|
|
case 0xffffbfb3:
|
|
case 0xffffbeb3:
|
|
state = DONE;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case SEEK_ID:
|
|
if (pos + 7 < bit_file->raw_bit.length && bit_file->raw_bit.data[pos] == 0xe2) {
|
|
bit_file->idcode = be_to_h_u32(&bit_file->raw_bit.data[pos + 4]);
|
|
bit_file->has_id = true;
|
|
state = DONE;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (state != DONE) {
|
|
LOG_ERROR("parsing bitstream failed");
|
|
return ERROR_PLD_FILE_LOAD_FAILED;
|
|
}
|
|
|
|
for (size_t i = bit_file->offset; i < bit_file->raw_bit.length; i++)
|
|
bit_file->raw_bit.data[i] = flip_u32(bit_file->raw_bit.data[i], 8);
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
int lattice_read_file(struct lattice_bit_file *bit_file, const char *filename, enum lattice_family_e family)
|
|
{
|
|
if (!filename || !bit_file)
|
|
return ERROR_COMMAND_SYNTAX_ERROR;
|
|
|
|
/* check if binary .bin or ascii .bit/.hex */
|
|
const char *file_suffix_pos = strrchr(filename, '.');
|
|
if (!file_suffix_pos) {
|
|
LOG_ERROR("Unable to detect filename suffix");
|
|
return ERROR_PLD_FILE_LOAD_FAILED;
|
|
}
|
|
|
|
if (strcasecmp(file_suffix_pos, ".bit") == 0)
|
|
return lattice_read_bit_file(bit_file, filename, family);
|
|
|
|
LOG_ERROR("Filetype not supported");
|
|
return ERROR_PLD_FILE_LOAD_FAILED;
|
|
}
|