From 34b329c19ca9b24c55cc399db252c7134c18b615 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Joachim=20Stro=CC=88mbergson?= <joachim@secworks.se>
Date: Wed, 4 Feb 2015 18:10:46 +0100
Subject: (1) Adding test code to do single block hash. (2) Adding helper
 function for reading data from FPGA registers. (3) Moving eim config to
 separate function.

---
 sw/test-sha256/test-sha256.c | 89 +++++++++++++++++++++++++++++---------------
 1 file changed, 60 insertions(+), 29 deletions(-)

diff --git a/sw/test-sha256/test-sha256.c b/sw/test-sha256/test-sha256.c
index d87a902..bc3190c 100644
--- a/sw/test-sha256/test-sha256.c
+++ b/sw/test-sha256/test-sha256.c
@@ -63,14 +63,58 @@
 #define ADDR_DIGEST7     (SHA256_BASE + (0x27 << 2))
 
 
+//------------------------------------------------------------------------------
+//------------------------------------------------------------------------------
+uint32_t get_w32(uint32_t addr)
+{
+  unsigned int read_addr;
+  unsigned int read_data;
+  eim_read_32(read_addr, &read_data);
+
+  return read_data;
+}
+
+
 //------------------------------------------------------------------------------
 //------------------------------------------------------------------------------
 void test_single_block()
 {
-  // Single block test vector as specified by NIST.
-  //tc0 = 512'h61626380000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000018;
-  //res0 = 256'hBA7816BF8F01CFEA414140DE5DAE2223B00361A396177A9CB410FF61F20015AD;
+  uint32_t write_data;
+
+  write_data = 0x61626380;
+  eim_write_32(ADDR_BLOCK0, &write_data);
+  write_data = 0x00000000;
+  eim_write_32(ADDR_BLOCK1, &write_data);
+  eim_write_32(ADDR_BLOCK2, &write_data);
+  eim_write_32(ADDR_BLOCK3, &write_data);
+  eim_write_32(ADDR_BLOCK4, &write_data);
+  eim_write_32(ADDR_BLOCK5, &write_data);
+  eim_write_32(ADDR_BLOCK6, &write_data);
+  eim_write_32(ADDR_BLOCK7, &write_data);
+  eim_write_32(ADDR_BLOCK8, &write_data);
+  eim_write_32(ADDR_BLOCK9, &write_data);
+  eim_write_32(ADDR_BLOCK10, &write_data);
+  eim_write_32(ADDR_BLOCK11, &write_data);
+  eim_write_32(ADDR_BLOCK12, &write_data);
+  eim_write_32(ADDR_BLOCK13, &write_data);
+  eim_write_32(ADDR_BLOCK14, &write_data);
+  write_data = 0x00000018;
+  eim_write_32(ADDR_BLOCK15, &write_data);
+
+  write_data = 0x00000001;
+  eim_write_32(ADDR_CTRL, &write_data);
+
+  printf("digest0 = 0x%08x\n", get_w32(ADDR_DIGEST0));
+  printf("digest1 = 0x%08x\n", get_w32(ADDR_DIGEST1));
+  printf("digest2 = 0x%08x\n", get_w32(ADDR_DIGEST2));
+  printf("digest3 = 0x%08x\n", get_w32(ADDR_DIGEST3));
+  printf("digest4 = 0x%08x\n", get_w32(ADDR_DIGEST4));
+  printf("digest5 = 0x%08x\n", get_w32(ADDR_DIGEST5));
+  printf("digest6 = 0x%08x\n", get_w32(ADDR_DIGEST6));
+  printf("digest7 = 0x%08x\n", get_w32(ADDR_DIGEST7));
 
+  // What we want to see:
+  // res0 = 256'hBA7816BF8F01CFEA414140DE5DAE2223B00361A396177A9CB410FF61F20015AD;
 
 }
 
@@ -88,42 +132,21 @@ void test_dual_block()
 
 }
 
+
 //------------------------------------------------------------------------------
 //------------------------------------------------------------------------------
 void test_sha256()
 {
-  unsigned int write_addr;
-  unsigned int write_data;
-  unsigned int read_addr;
-  unsigned int read_data;
-  int ok;
-  unsigned int i;
-
-  // Dump register contents. See if we have the core.
-  for (i = 0 ; i < 200 ; i += 4) {
-    read_addr = SHA256_BASE + i;
-    eim_read_32(read_addr, &read_data);
-    printf("address 0x%08x = 0x%08x\n", read_addr, read_data);
-  }
-
-  // Try to iniate block processing and then dump
-  write_addr = SHA256_BASE + 0x20;
-  write_data = 0x00000001;
-  eim_write_32(write_addr, &write_data);
+  uint32_t i;
 
-  // Dump register contents. See if we have the core.
-  for (i = 0 ; i < 200 ; i += 4) {
-    read_addr = SHA256_BASE + i;
-    eim_read_32(read_addr, &read_data);
-    printf("address 0x%08x = 0x%08x\n", read_addr, read_data);
-  }
+  test_single_block();
 
 }
 
+
 //------------------------------------------------------------------------------
-// main()
 //------------------------------------------------------------------------------
-int main()
+int config_eim()
 {
   int ok;
   unsigned int i;
@@ -139,6 +162,14 @@ int main()
     printf("EIM Setup ok.\n");
   }
 
+}
+
+//------------------------------------------------------------------------------
+// main()
+//------------------------------------------------------------------------------
+int main()
+{
+  config_eim();
   test_sha256();
 
   return 0;
-- 
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