openssl.patch

--- ./openssl/crypto/aes/asm/aes-armv4.pl	2016-04-14 10:20:37.000000000 +0100
+++ ./openssl/crypto/aes/asm/aes-armv4.pl_diff	2016-04-13 17:17:51.000000000 +0100
@@ -52,6 +52,12 @@
 
 $code=<<___;
 #include "arm_arch.h"
+
+#ifdef AES_TRIG
+.extern trigger_set
+.extern trigger_clr
+#endif /* AES_TRIG */
+
 .text
 .code	32
 
@@ -169,6 +175,15 @@
 AES_encrypt:
 	sub	r3,pc,#8		@ AES_encrypt
 	stmdb   sp!,{r1,r4-r12,lr}
+
+	#ifdef AES_TRIG
+	@@ triggering
+	stmdb   sp!,{r0-r12,lr}
+	bl trigger_set
+	ldmia	  sp!,{r0-r12,lr}
+	@@ triggering
+	#endif /* AES_TRIG */
+
 	mov	$rounds,r0		@ inp
 	mov	$key,r2
 	sub	$tbl,r3,#AES_encrypt-AES_Te	@ Te
@@ -257,6 +272,15 @@
 	strb	$t3,[$rounds,#14]
 	strb	$s3,[$rounds,#15]
 #endif
+
+	#ifdef AES_TRIG
+	@@ triggering
+	stmdb   sp!,{r0-r12,lr}
+	bl trigger_clr
+	ldmia	  sp!,{r0-r12,lr}
+	@@ triggering
+	#endif /* AES_TRIG */
+
 #if __ARM_ARCH__>=5
 	ldmia	sp!,{r4-r12,pc}
 #else
@@ -885,6 +909,15 @@
 AES_decrypt:
 	sub	r3,pc,#8		@ AES_decrypt
 	stmdb   sp!,{r1,r4-r12,lr}
+
+	#ifdef AES_TRIG
+	@@ triggering
+	stmdb   sp!,{r0-r12,lr}
+	bl trigger_set
+	ldmia	  sp!,{r0-r12,lr}
+	@@ triggering
+	#endif /* AES_TRIG */
+
 	mov	$rounds,r0		@ inp
 	mov	$key,r2
 	sub	$tbl,r3,#AES_decrypt-AES_Td		@ Td
@@ -973,6 +1006,15 @@
 	strb	$t3,[$rounds,#14]
 	strb	$s3,[$rounds,#15]
 #endif
+
+	#ifdef AES_TRIG
+	@@ triggering
+	stmdb   sp!,{r0-r12,lr}
+	bl trigger_clr
+	ldmia	  sp!,{r0-r12,lr}
+	@@ triggering
+	#endif /* AES_TRIG */
+
 #if __ARM_ARCH__>=5
 	ldmia	sp!,{r4-r12,pc}
 #else
--- ./openssl/crypto/conf/conf.h	2016-04-14 10:20:37.000000000 +0100
+++ ./openssl/crypto/conf/conf.h_diff	2016-04-13 17:09:29.000000000 +0100
@@ -71,6 +71,14 @@
 extern "C" {
 #endif
 
+#ifdef AES_TRIG
+int trigger_map(void);
+int trigger_unmap(void);
+int trigger_setup(void);
+int trigger_set(void);
+int trigger_clr(void);
+#endif /* AES_TRIG */
+
 typedef struct {
     char *section;
     char *name;
--- ./openssl/crypto/conf/conf_lib.c	2016-04-14 10:20:37.000000000 +0100
+++ ./openssl/crypto/conf/conf_lib.c_diff	2016-04-14 10:18:41.000000000 +0100
@@ -64,6 +64,114 @@
 #include <openssl/conf_api.h>
 #include <openssl/lhash.h>
 
+#ifdef AES_TRIG
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdint.h>
+
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+
+#include <fcntl.h>
+
+#define MMAP_OFFSET (0x44C00000)
+#define MMAP_SIZE   (0x481AEFFF-MMAP_OFFSET)
+
+#define GPIO0_BASE 0x44E07000
+#define GPIO1_BASE 0x4804C000
+#define GPIO2_BASE 0x481AC000
+
+#define GPIO_SIZE  0x00001FFF
+
+#define GPIO_OE  0x134
+#define GPIO_SET 0x194
+#define GPIO_CLR 0x190
+#define GPIO_DO  0x13C
+
+#define PIN_BIT 3
+
+static uint32_t *trigger_gpioBase;
+static uint8_t   trigger_active = 0;
+
+int trigger_map(void){
+
+    // variable for mem file descriptor
+    int memfd;
+
+    // check if we have root permissions to be doing this!
+    if ( getuid() != 0 ) {
+        perror("trigger_initMap : this program requires root permissions to run!");
+        return -1;
+    }
+
+    // open mem mapper
+    memfd = open("/dev/mem", O_RDWR);
+
+    // check if there was a problem
+    if (memfd == -1){
+        perror("initMap : Unabe to open /dev/mem");
+        return -1;
+    }
+
+    // map the GPIO2 physical address as R/W
+    trigger_gpioBase = (uint32_t*)mmap(0, MMAP_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, memfd, GPIO2_BASE);
+
+    // check for any problems
+    if (trigger_gpioBase == MAP_FAILED){
+        close(memfd);
+        perror("initMap : mmap to gpio base failed");
+        return -1;
+    }
+
+    // set the global map active variable...this is shocking but...meh
+    trigger_active = 1;
+    return 1;
+}
+
+int trigger_unmap(void){
+
+  // check if the memory has been mapped
+  if (trigger_active) {
+    // unmap the memory and clear the global flag
+    munmap(trigger_gpioBase, MMAP_SIZE);
+    trigger_active = 0;
+    return 1;
+
+  } else {
+    // if it's not open...then we just ignore the call
+    return 0;
+  }
+
+}
+
+// setup triggger for output signal
+int trigger_setup(void){
+    uint32_t *gpioOE = NULL;
+    gpioOE   = trigger_gpioBase + (GPIO_OE/4);
+    *gpioOE  &= ~(1 << PIN_BIT);
+    return 0;
+}
+
+// set the trigger to logic 1
+int trigger_set(void){
+    uint32_t* gpioSET  = NULL;
+    gpioSET   = trigger_gpioBase + (GPIO_SET/4);
+    *gpioSET  = (1 << PIN_BIT);
+    return 0;
+}
+
+// set the trigger to logic 0
+int trigger_clr(void){
+    uint32_t* gpioCLR  = NULL;
+    gpioCLR   = trigger_gpioBase + (GPIO_CLR/4);
+    *gpioCLR  = (1 << PIN_BIT);
+    return 0;
+}
+
+#endif /* AES_TRIG */
+
 const char CONF_version[] = "CONF" OPENSSL_VERSION_PTEXT;
 
 static CONF_METHOD *default_CONF_method = NULL;
@@ -229,6 +337,12 @@
 {
     CONF *ret;
 
+    #ifdef AES_TRIG
+    // Setup GPIO
+    trigger_map();
+    trigger_setup();
+    #endif /* AES_TRIG */
+
     if (meth == NULL)
         meth = NCONF_default();
 
@@ -243,6 +357,12 @@
 
 void NCONF_free(CONF *conf)
 {
+
+    #ifdef AES_TRIG
+    // tear down gpio
+    trigger_unmap();
+    #endif /* AES_TRIG */
+
     if (conf == NULL)
         return;
     conf->meth->destroy(conf);