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authorJoachim StroĢˆmbergson <joachim@secworks.se>2015-02-02 21:10:45 +0100
committerJoachim StroĢˆmbergson <joachim@secworks.se>2015-02-02 21:10:45 +0100
commit860671f0cd8d5f31ca93c5d93606e68e015ddb23 (patch)
treea3a2911d2e46bd3be6cf013f8b46d85e78987d83 /sw/test-sha256/test-sha256.c
parent533b26e915026843508d36f662dbbcfa64742065 (diff)
Fixed name.
Diffstat (limited to 'sw/test-sha256/test-sha256.c')
-rw-r--r--sw/test-sha256/test-sha256.c206
1 files changed, 206 insertions, 0 deletions
diff --git a/sw/test-sha256/test-sha256.c b/sw/test-sha256/test-sha256.c
new file mode 100644
index 0000000..70415d8
--- /dev/null
+++ b/sw/test-sha256/test-sha256.c
@@ -0,0 +1,206 @@
+//------------------------------------------------------------------------------
+// setup-eim.c
+//------------------------------------------------------------------------------
+
+
+//------------------------------------------------------------------------------
+// Headers
+//------------------------------------------------------------------------------
+#include <stdio.h>
+#include <stdlib.h>
+#include "novena-eim.h"
+
+
+//------------------------------------------------------------------------------
+// Demo Adder
+//------------------------------------------------------------------------------
+#define DEMO_ADDER_BASE_ADDR (0x3210)
+#define DEMO_ADDER_REG_X (EIM_BASE_ADDR + DEMO_ADDER_BASE_ADDR + (0<<2))
+#define DEMO_ADDER_REG_Y (EIM_BASE_ADDR + DEMO_ADDER_BASE_ADDR + (1<<2))
+#define DEMO_ADDER_REG_Z (EIM_BASE_ADDR + DEMO_ADDER_BASE_ADDR + (2<<2))
+#define DEMO_ADDER_REG_SC (EIM_BASE_ADDR + DEMO_ADDER_BASE_ADDR + (3<<2))
+
+
+//------------------------------------------------------------------------------
+// Prototypes
+//------------------------------------------------------------------------------
+unsigned int demo_adder_test_round (unsigned int, unsigned int);
+unsigned int lfsr_next_x (unsigned int);
+unsigned int lfsr_next_y (unsigned int);
+
+
+//------------------------------------------------------------------------------
+// Testing Parameters
+//------------------------------------------------------------------------------
+const int NUM_TEST_ROUNDS = 10000;
+const int PRINT_XYZ_VALUES = 1;
+
+
+//------------------------------------------------------------------------------
+int main()
+//------------------------------------------------------------------------------
+{
+ // try to setup eim (return value should be 1)
+ printf("Configuring EIM .. ");
+ int ok = eim_setup();
+ if (ok < 1)
+ { printf("ERROR\n");
+ return EXIT_FAILURE;
+ }
+ else printf("OK\n");
+
+ // run test
+ int i;
+ unsigned int x = 0x12341234, y = 0xABCDABCD, zyx;
+ printf("Testing started.\n");
+ for (i=0; i<NUM_TEST_ROUNDS; i++)
+ {
+ // run another round
+ unsigned int z = demo_adder_test_round(x, y);
+
+ // calculate correct answer
+ zyx = x + y;
+
+ // check result
+ if (z != zyx)
+ { printf("ERROR: round %10d of %10d: x == 0x%08X, y == 0x%08X, z == 0x%08X [z should be 0x%08X]\n", i+1, NUM_TEST_ROUNDS, x, y, z, zyx);
+ exit(EXIT_FAILURE);
+ }
+ else if (PRINT_XYZ_VALUES) printf("OK: round %10d of %10d: x == 0x%08X, y == 0x%08X, z == 0x%08X\n", i+1, NUM_TEST_ROUNDS, x, y, z);
+
+ // update input values
+ x = lfsr_next_x(x);
+ y = lfsr_next_x(y);
+ }
+
+ // ok
+ printf("Testing completed successfully.\n");
+
+ // done
+ return EXIT_SUCCESS;
+}
+
+
+//------------------------------------------------------------------------------
+unsigned int demo_adder_test_round(unsigned int x, unsigned int y)
+//------------------------------------------------------------------------------
+{
+ // write x
+ eim_write_32(DEMO_ADDER_REG_X, &x);
+
+ // write y
+ eim_write_32(DEMO_ADDER_REG_Y, &y);
+
+ /* To make adder calculate something we need to change its control register,
+ * so we read it, increment and write back. Control register is in the lower 16 bits.
+ */
+ unsigned int ctl;
+ eim_read_32(DEMO_ADDER_REG_SC, &ctl);
+ ctl += 1;
+ ctl &= 0x0000FFFF;
+ eim_write_32(DEMO_ADDER_REG_SC, &ctl);
+
+ /* When adder is done, it will write new control value into its status register. Adder has 1-cycle latency
+ * which is very small, we don't even need to poll, just check that status was updated. Status register is
+ * in the upper 16 bits.
+ */
+ unsigned int sts;
+ eim_read_32(DEMO_ADDER_REG_SC, &sts);
+ sts >>= 16;
+ if (sts != ctl)
+ { printf("ERROR: Adder timeout!\n");
+ exit(EXIT_FAILURE);
+ }
+
+ // read z
+ unsigned int z;
+ eim_read_32(DEMO_ADDER_REG_Z, &z);
+
+ // uncomment to trigger an error
+ /**
+ z++;
+ **/
+
+ // done
+ return z;
+}
+
+
+//------------------------------------------------------------------------------
+unsigned int lfsr_next_x(unsigned int value)
+//------------------------------------------------------------------------------
+{
+ //
+ // [32, 31, 29, 28, 27, 25, 24, 23, 21, 19, 17, 14, 10, 6, 4, 2]
+ // 0 1 3 4 5 7 8 9 11 13 15 18 22 24 28 30
+ //
+
+ unsigned int carry = 0;
+
+ carry ^= (value >> 0);
+ carry ^= (value >> 1);
+ carry ^= (value >> 3);
+ carry ^= (value >> 4);
+
+ carry ^= (value >> 5);
+ carry ^= (value >> 7);
+ carry ^= (value >> 8);
+ carry ^= (value >> 9);
+
+ carry ^= (value >> 11);
+ carry ^= (value >> 13);
+ carry ^= (value >> 15);
+ carry ^= (value >> 18);
+
+ carry ^= (value >> 22);
+ carry ^= (value >> 24);
+ carry ^= (value >> 28);
+ carry ^= (value >> 30);
+
+ value >>= 1, value |= (carry << 31);
+
+ return value;
+}
+
+
+//------------------------------------------------------------------------------
+unsigned int lfsr_next_y(unsigned int value)
+//------------------------------------------------------------------------------
+{
+ //
+ // [32, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 1]
+ // 0 15 16 17 18 19 20 21 22 23 24 25 26 27 28 31
+ //
+
+ unsigned int carry = 0;
+
+ carry ^= (value >> 0);
+ carry ^= (value >> 15);
+ carry ^= (value >> 16);
+ carry ^= (value >> 17);
+
+ carry ^= (value >> 18);
+ carry ^= (value >> 19);
+ carry ^= (value >> 20);
+ carry ^= (value >> 21);
+
+ carry ^= (value >> 22);
+ carry ^= (value >> 23);
+ carry ^= (value >> 24);
+ carry ^= (value >> 25);
+
+ carry ^= (value >> 26);
+ carry ^= (value >> 27);
+ carry ^= (value >> 28);
+ carry ^= (value >> 31);
+
+ value >>= 1, value |= (carry << 31);
+
+ return value;
+}
+
+
+
+//------------------------------------------------------------------------------
+// End-of-File
+//------------------------------------------------------------------------------