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test if special file when updating kernel(solution: reboot only), --force-delete-normal-file used to force delete bfin fpga drive if normal file and create proper device tree

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This commit is contained in:
maliakal_d
2022-03-22 16:44:12 +01:00
parent f538b8b10b
commit 0f4bcf3a9d
11 changed files with 194 additions and 57 deletions
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119
slsDetectorServers/slsDetectorServer/src/programViaBlackfin.c
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@ -39,6 +39,9 @@
#define CMD_GET_AMD_FLASH "dmesg | grep Amd"
#define CMD_CREATE_DEVICE_FILE_PART1 "mknod"
#define CMD_CREATE_DEVICE_FILE_PART2 "c 90 6"
#define FLASH_BUFFER_MEMORY_SIZE (128 * 1024) // 500 KB
// clang-format on
@ -321,7 +324,7 @@ int preparetoCopyProgram(char *mess, char *functionType, FILE **fd,
int eraseAndWriteToFlash(char *mess, enum PROGRAM_INDEX index,
char *functionType, char *clientChecksum,
ssize_t fsize) {
ssize_t fsize, int forceDeleteNormalFile) {
memset(messageType, 0, sizeof(messageType));
strcpy(messageType, functionType);
@ -332,7 +335,8 @@ int eraseAndWriteToFlash(char *mess, enum PROGRAM_INDEX index,
FILE *flashfd = NULL;
FILE *srcfd = NULL;
if (openFileForFlash(mess, &flashfd, &srcfd) == FAIL) {
if (openFileForFlash(mess, &flashfd, &srcfd, forceDeleteNormalFile) ==
FAIL) {
return FAIL;
}
@ -436,7 +440,8 @@ int getDrive(char *mess, enum PROGRAM_INDEX index) {
return OK;
}
int openFileForFlash(char *mess, FILE **flashfd, FILE **srcfd) {
int openFileForFlash(char *mess, FILE **flashfd, FILE **srcfd,
int forceDeleteNormalFile) {
// open src file
*srcfd = fopen(TEMP_PROG_FILE_NAME, "r");
if (*srcfd == NULL) {
@ -449,29 +454,8 @@ int openFileForFlash(char *mess, FILE **flashfd, FILE **srcfd) {
}
LOG(logDEBUG1, ("Temp file ready for reading\n"));
#ifndef VIRTUAL
// check if its a normal file or special file
struct stat buf;
if (stat(flashDriveName, &buf) == -1) {
sprintf(mess,
"Could not %s. Unable to validate if flash drive found is a "
"special file\n",
messageType);
LOG(logERROR, (mess));
if (checkNormalFile(mess, forceDeleteNormalFile) == FAIL)
return FAIL;
}
// non zero = block special file
if (S_ISBLK(buf.st_mode)) {
sprintf(mess,
"Could not %s. The flash drive found is a normal file. To "
"delete this file, create the flash drive and proceed with "
"programming, re-run the programming command with parameter "
"'--force-delete-normal-file'\n",
messageType);
LOG(logERROR, (mess));
return FAIL;
}
#endif
// open flash drive for writing
*flashfd = fopen(flashDriveName, "w");
@ -488,6 +472,91 @@ int openFileForFlash(char *mess, FILE **flashfd, FILE **srcfd) {
return OK;
}
int checkNormalFile(char *mess, int forceDeleteNormalFile) {
#ifndef VIRTUAL
// check if its a normal file or special file
struct stat buf;
if (stat(flashDriveName, &buf) == -1) {
sprintf(mess,
"Could not %s. Unable to validate if flash drive found is a "
"special file\n",
messageType);
LOG(logERROR, (mess));
return FAIL;
}
// non zero = block special file
if (S_ISBLK(buf.st_mode)) {
// kernel memory is not permanent
if (index != PROGRAM_FPGA) {
sprintf(mess,
"Could not %s. The flash drive found is a normal file. "
"Reboot board using 'rebootcontroller' command to load "
"proper device tree\n",
messageType);
LOG(logERROR, (mess));
return FAIL;
}
// fpga memory stays after a reboot, so fix it if user allows
sprintf(mess,
"Could not %s. The flash drive found is a normal file. To "
"delete this file, create the flash drive and proceed with "
"programming, re-run the programming command with parameter "
"'--force-delete-normal-file'\n",
messageType);
LOG(logERROR, (mess));
// user does not allow (default)
if (!forceDeleteNormalFile) {
return FAIL;
}
// user allows to fix it, so force delete normal file
char cmd[MAX_STR_LENGTH] = {0};
char retvals[MAX_STR_LENGTH] = {0};
if (snprintf(cmd, MAX_STR_LENGTH, "rm %s", flashDriveName) >=
MAX_STR_LENGTH) {
sprintf(mess,
"Could not update %s. Command to delete normal file %s is "
"too long\n",
messageType, flashDriveName);
LOG(logERROR, (mess));
return FAIL;
}
if (executeCommand(cmd, retvals, logDEBUG1) == FAIL) {
snprintf(
mess, MAX_STR_LENGTH,
"Could not update %s. (could not delete normal file %s: %s)\n",
messageType, flashDriveName, retvals);
LOG(logERROR, (mess));
return FAIL;
}
LOG(logINFO, ("\tDeleted Normal File(%s)\n", flashDriveName));
// create special drive
if (snprintf(cmd, MAX_STR_LENGTH, "%s %s %s",
CMD_CREATE_DEVICE_FILE_PART1, flashDriveName,
CMD_CREATE_DEVICE_FILE_PART2) >= MAX_STR_LENGTH) {
sprintf(mess,
"Could not update %s. Command to create special file %s is "
"too long\n",
messageType, flashDriveName);
LOG(logERROR, (mess));
return FAIL;
}
if (executeCommand(cmd, retvals, logDEBUG1) == FAIL) {
snprintf(
mess, MAX_STR_LENGTH,
"Could not update %s. (could not create special file %s: %s)\n",
messageType, flashDriveName, retvals);
LOG(logERROR, (mess));
return FAIL;
}
LOG(logINFO, ("\tSpecial File created (%s)\n", flashDriveName));
}
#endif
return OK;
}
int eraseFlash(char *mess) {
LOG(logINFO, ("\tErasing Flash...\n"));