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check kernel version before enabling the gipo 3 chipenable pins

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This commit is contained in:
maliakal_d 2021-10-29 12:25:30 +02:00
parent c3eff0246a
commit 2d2287e189
3 changed files with 72 additions and 6 deletions
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4
slsDetectorServers/slsDetectorServer/include/blackfin.h
View File

@ -105,3 +105,7 @@ uint32_t *Blackfin_getBaseAddress();
* Map FPGA
*/
int mapCSP0(void);
/** check kernel version against expected version string (complain if too old)
* @returns OK or FAIL */
int blackfin_checkKernelVersion(char *expectedVersion);

55
slsDetectorServers/slsDetectorServer/src/blackfin.c
View File

@ -3,11 +3,14 @@
#include "blackfin.h"
#include "RegisterDefs.h"
#include "clogger.h"
#include "common.h"
#include "sls/ansi.h"
#include "sls/sls_detector_defs.h"
#include <fcntl.h> // open
#include <sys/mman.h> // mmap
#include <fcntl.h> // open
#include <string.h>
#include <sys/mman.h> // mmap
#include <sys/utsname.h> // uname
/* global variables */
u_int32_t *csp0base = 0;
@ -126,4 +129,50 @@ int mapCSP0(void) {
return OK;
}
uint32_t *Blackfin_getBaseAddress() { return csp0base; }
uint32_t *Blackfin_getBaseAddress() { return csp0base; }
int blackfin_checkKernelVersion(char *expectedVersion) {
// extract kernel date string
struct utsname buf;
if (uname(&buf) == -1) {
LOG(logERROR, ("Could not get kernel version\n"));
return FAIL;
}
// remove first word (#version number)
const char *ptr = strchr(buf.version, ' ');
if (ptr == NULL) {
LOG(logERROR, ("Could not parse kernel version\n"));
return FAIL;
}
char output[256];
memset(output, 0, 256);
strcpy(output, buf.version + (ptr - buf.version + 1));
// convert kernel date string into time
time_t kernelDate;
if (GetTimeFromString(output, &kernelDate) == FAIL) {
LOG(logERROR, ("Could not parse retrieved kernel date, %s\n", output));
return FAIL;
}
// convert expected date into time
time_t expDate;
if (GetTimeFromString(expectedVersion, &expDate) == FAIL) {
LOG(logERROR,
("Could not parse expected kernel date, %s\n", expectedVersion));
return FAIL;
}
// compare if kernel time is older than expected time
if (kernelDate < expDate) {
LOG(logERROR, ("Kernel Version Incompatible (too old)! Expected: [%s], "
"Got [%s]\n",
expectedVersion, output));
return FAIL;
}
LOG(logINFOBLUE, ("Kernel Version Compatible: %s [min.: %s]\n", output,
expectedVersion));
return OK;
}

19
slsDetectorServers/slsDetectorServer/src/programFpgaBlackfin.c
View File

@ -1,6 +1,7 @@
// SPDX-License-Identifier: LGPL-3.0-or-other
// Copyright (C) 2021 Contributors to the SLS Detector Package
#include "programFpgaBlackfin.h"
#include "blackfin.h"
#include "clogger.h"
#include "common.h"
#include "sls/ansi.h"
@ -24,21 +25,33 @@ int gpioDefined = 0;
extern int executeCommand(char *command, char *result, enum TLogLevel level);
int latestKernelVerified = -1;
#define KERNEL_DATE_VRSN "Fri Oct 29 13:58:38 CEST 2021"
void defineGPIOpins() {
#ifdef VIRTUAL
return;
#endif
if (latestKernelVerified == -1) {
latestKernelVerified =
((OK == blackfin_checkKernelVersion(KERNEL_DATE_VRSN)) ? 1 : 0);
}
if (!gpioDefined) {
// define the gpio pins
system("echo 7 > /sys/class/gpio/export");
system("echo 9 > /sys/class/gpio/export");
// gpio 3 = not chip enable
system("echo 3 > /sys/class/gpio/export");
// define their direction
system("echo in > /sys/class/gpio/gpio7/direction");
system("echo out > /sys/class/gpio/gpio9/direction");
system("echo out > /sys/class/gpio/gpio3/direction");
LOG(logINFO, ("gpio pins defined\n"));
if (latestKernelVerified == 1) {
// gpio 3 = not chip enable
system("echo 3 > /sys/class/gpio/export");
system("echo out > /sys/class/gpio/gpio3/direction");
LOG(logINFO, ("gpio pin for !ChipEnable defined\n"));
}
gpioDefined = 1;
} else
LOG(logDEBUG1, ("gpio pins already defined earlier\n"));