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-rw-r--r--src/Makefile.am3
-rw-r--r--src/mts_wait_for_cell_reset.c108
-rw-r--r--src/x108
3 files changed, 218 insertions, 1 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
index 99145a4..7dadb83 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -2,10 +2,11 @@
AUTOMAKE_OPTIONS = gnu
AM_CFLAGS = -Wall
-bin_PROGRAMS = mts-id-eeprom
+bin_PROGRAMS = mts-id-eeprom mts-wait-for-cell-reset
sbin_PROGRAMS = mts-hashpwd mts-fpga-loader
mts_hashpwd_SOURCES = hashpwd.cpp
mts_id_eeprom_SOURCES = eeprom_main.c
+mts_wait_for_cell_reset_SOURCES = mts_wait_for_cell_reset.c
noinst_HEADERS = eeprom.h log.h mts_error_codes.h mts_fpga_hash.h mts_fpga_reg.h mts_fpga_spi.h
mts_hashpwd_LDADD = -lcrypto
diff --git a/src/mts_wait_for_cell_reset.c b/src/mts_wait_for_cell_reset.c
new file mode 100644
index 0000000..9f7de31
--- /dev/null
+++ b/src/mts_wait_for_cell_reset.c
@@ -0,0 +1,108 @@
+/*
+ * mts-wait-for-cell-reset
+ *
+ * Block signal
+ * If not in reset, exit
+ * Register with mts-io for reset
+ * If not in reset, exit
+ * Suspend process for signal
+ * If signal occurs, exit
+ */
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <string.h>
+#include <errno.h>
+#include <stdio.h>
+
+const char *name = "mts-wait-for-cell-reset";
+const int RST_SIG=SIGUSR2; // Wait for this signal
+const char *MONITOR="/sys/devices/platform/mts-io/radio-reset-monitor";
+const char *RADIO_DISCOVERY="/sys/devices/platform/mts-io/radio-udev-discovery";
+
+/* Return 0 if Cellular modem is being reset
+ * Return 1 if Cellular modem is not being reset
+ */
+int
+not_reset(const char *attr_name)
+{
+ int not_in_reset, result;
+ char buf[256];
+ int discovery;
+
+ discovery = open(attr_name,O_RDONLY);
+ if (discovery == -1) {
+ fprintf(stderr,"FAILED: %s cannot open attribute %s: %s\n",name,attr_name,strerror(errno));
+ exit(1);
+ }
+ result = read(discovery,buf,sizeof buf);
+ if (result > 0)
+ not_in_reset = atoi(buf);
+ else if (result == 0) {
+ fprintf(stderr,"FAILED: %s attribute %s has no state\n",name,attr_name);
+ exit(1);
+ } else {
+ fprintf(stderr,"FAILED: %s attribute %s error: %s\n",name,attr_name,strerror(errno));
+ exit(1);
+ }
+ close(discovery);
+ return not_in_reset;
+}
+
+void
+handler(int sig)
+{
+ /* Normal way out of this program
+ * exit not safe from signal handler so
+ * use _exit()
+ */
+ _exit(0);
+}
+
+int
+main(int argc, char *argv[])
+{
+ sigset_t blockedset,nullset;
+ int monitor;
+ int result;
+ char buf[128];
+ struct sigaction action;
+
+ memset(&action,0,sizeof action);
+ action.sa_handler = handler;
+ memset(&blockedset,0,sizeof blockedset);
+ sigaddset(&blockedset,RST_SIG);
+ memset(&nullset,0,sizeof nullset);
+
+ sigprocmask(SIG_BLOCK,&blockedset,NULL); // Blocked RST_SIG
+
+ sigaction(RST_SIG,&action,NULL);
+
+ if (not_reset(RADIO_DISCOVERY))
+ exit(0); // Not in reset
+ sprintf(buf,"%d %d",getpid(),RST_SIG);
+
+ monitor = open(MONITOR,O_WRONLY);
+ if (monitor == -1) {
+ fprintf(stderr,"FAILED: %s cannot open attribute %s: %s\n",name,MONITOR,strerror(errno));
+ exit(2);
+ }
+ result = write(monitor,buf,strlen(buf));
+ if(result != strlen(buf)) {
+ if (result == -1) {
+ fprintf(stderr,"FAILED: %s attribute %s write error: %s\n",name,MONITOR,strerror(errno));
+ exit(3);
+ }
+ fprintf(stderr,"FAILED: %s attribute %s incomplete write error: %d/%d\n",name,MONITOR,result,(int)strlen(buf));
+ exit(4);
+ }
+ close(monitor);
+ if (not_reset(RADIO_DISCOVERY))
+ exit(0);
+
+ sigsuspend(&nullset); // Allow all signals
+ /* NOTREACHED */
+}
diff --git a/src/x b/src/x
new file mode 100644
index 0000000..9f7de31
--- /dev/null
+++ b/src/x
@@ -0,0 +1,108 @@
+/*
+ * mts-wait-for-cell-reset
+ *
+ * Block signal
+ * If not in reset, exit
+ * Register with mts-io for reset
+ * If not in reset, exit
+ * Suspend process for signal
+ * If signal occurs, exit
+ */
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <string.h>
+#include <errno.h>
+#include <stdio.h>
+
+const char *name = "mts-wait-for-cell-reset";
+const int RST_SIG=SIGUSR2; // Wait for this signal
+const char *MONITOR="/sys/devices/platform/mts-io/radio-reset-monitor";
+const char *RADIO_DISCOVERY="/sys/devices/platform/mts-io/radio-udev-discovery";
+
+/* Return 0 if Cellular modem is being reset
+ * Return 1 if Cellular modem is not being reset
+ */
+int
+not_reset(const char *attr_name)
+{
+ int not_in_reset, result;
+ char buf[256];
+ int discovery;
+
+ discovery = open(attr_name,O_RDONLY);
+ if (discovery == -1) {
+ fprintf(stderr,"FAILED: %s cannot open attribute %s: %s\n",name,attr_name,strerror(errno));
+ exit(1);
+ }
+ result = read(discovery,buf,sizeof buf);
+ if (result > 0)
+ not_in_reset = atoi(buf);
+ else if (result == 0) {
+ fprintf(stderr,"FAILED: %s attribute %s has no state\n",name,attr_name);
+ exit(1);
+ } else {
+ fprintf(stderr,"FAILED: %s attribute %s error: %s\n",name,attr_name,strerror(errno));
+ exit(1);
+ }
+ close(discovery);
+ return not_in_reset;
+}
+
+void
+handler(int sig)
+{
+ /* Normal way out of this program
+ * exit not safe from signal handler so
+ * use _exit()
+ */
+ _exit(0);
+}
+
+int
+main(int argc, char *argv[])
+{
+ sigset_t blockedset,nullset;
+ int monitor;
+ int result;
+ char buf[128];
+ struct sigaction action;
+
+ memset(&action,0,sizeof action);
+ action.sa_handler = handler;
+ memset(&blockedset,0,sizeof blockedset);
+ sigaddset(&blockedset,RST_SIG);
+ memset(&nullset,0,sizeof nullset);
+
+ sigprocmask(SIG_BLOCK,&blockedset,NULL); // Blocked RST_SIG
+
+ sigaction(RST_SIG,&action,NULL);
+
+ if (not_reset(RADIO_DISCOVERY))
+ exit(0); // Not in reset
+ sprintf(buf,"%d %d",getpid(),RST_SIG);
+
+ monitor = open(MONITOR,O_WRONLY);
+ if (monitor == -1) {
+ fprintf(stderr,"FAILED: %s cannot open attribute %s: %s\n",name,MONITOR,strerror(errno));
+ exit(2);
+ }
+ result = write(monitor,buf,strlen(buf));
+ if(result != strlen(buf)) {
+ if (result == -1) {
+ fprintf(stderr,"FAILED: %s attribute %s write error: %s\n",name,MONITOR,strerror(errno));
+ exit(3);
+ }
+ fprintf(stderr,"FAILED: %s attribute %s incomplete write error: %d/%d\n",name,MONITOR,result,(int)strlen(buf));
+ exit(4);
+ }
+ close(monitor);
+ if (not_reset(RADIO_DISCOVERY))
+ exit(0);
+
+ sigsuspend(&nullset); // Allow all signals
+ /* NOTREACHED */
+}
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