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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-adder.c
parent533b26e915026843508d36f662dbbcfa64742065 (diff)
Fixed name.
Diffstat (limited to 'sw/test-sha256/test-adder.c')
-rw-r--r--sw/test-sha256/test-adder.c206
1 files changed, 0 insertions, 206 deletions
diff --git a/sw/test-sha256/test-adder.c b/sw/test-sha256/test-adder.c
deleted file mode 100644
index 70415d8..0000000
--- a/sw/test-sha256/test-adder.c
+++ /dev/null
@@ -1,206 +0,0 @@
-//------------------------------------------------------------------------------
-// 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
-//------------------------------------------------------------------------------