--- /dev/null
+/*
+ * Secure Memory / Keystore Exemplification Module
+ * Copyright (C) 2012 Freescale Semiconductor, Inc. All Rights Reserved
+ *
+ * Serves as a functional example, and as a self-contained unit test for
+ * the functionality contained in sm_store.c.
+ *
+ * The example function, caam_sm_example_init(), runs a thread that:
+ *
+ * - initializes a set of fixed keys
+ * - stores one copy in clear buffers
+ * - stores them again in secure memory
+ * - extracts stored keys back out for use
+ * - intializes 3 data buffers for a test:
+ * (1) containing cleartext
+ * (2) to hold ciphertext encrypted with an extracted black key
+ * (3) to hold extracted cleartext decrypted with an equivalent clear key
+ *
+ * The function then builds simple job descriptors that reference the key
+ * material and buffers as initialized, and executes an encryption job
+ * with a black key, and a decryption job using a the same key held in the
+ * clear. The output of the decryption job is compared to the original
+ * cleartext; if they don't compare correctly, one can assume a key problem
+ * exists, where the function will exit with an error.
+ *
+ * This module can use a substantial amount of refactoring, which may occur
+ * after the API gets some mileage. Furthermore, expect this module to
+ * eventually disappear once the API is integrated into "real" software.
+ */
+
+#include "compat.h"
+#include "intern.h"
+#include "desc.h"
+#include "error.h"
+#include "jr.h"
+#include "sm.h"
+
+static u8 skeymod[] = {
+ 0x0f, 0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08,
+ 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00
+};
+static u8 symkey[] = {
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+ 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
+ 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f
+};
+
+static u8 symdata[] = {
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x0f, 0x06, 0x07,
+ 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
+ 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
+ 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
+ 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
+ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
+ 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
+ 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
+ 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
+ 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
+ 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
+ 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+ 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
+ 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+ 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
+ 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
+ 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
+ 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
+ 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
+ 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
+ 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
+ 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
+ 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
+ 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
+ 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
+ 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
+ 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
+ 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
+ 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
+ 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
+ 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
+};
+
+static int mk_job_desc(u32 *desc, dma_addr_t key, u16 keysz, dma_addr_t indata,
+ dma_addr_t outdata, u16 sz, u32 cipherdir, u32 keymode)
+{
+ desc[1] = CMD_KEY | CLASS_1 | (keysz & KEY_LENGTH_MASK) | keymode;
+ desc[2] = (u32)key;
+ desc[3] = CMD_OPERATION | OP_TYPE_CLASS1_ALG | OP_ALG_AAI_ECB |
+ cipherdir;
+ desc[4] = CMD_FIFO_LOAD | FIFOLD_CLASS_CLASS1 |
+ FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST1 | sz;
+ desc[5] = (u32)indata;
+ desc[6] = CMD_FIFO_STORE | FIFOST_TYPE_MESSAGE_DATA | sz;
+ desc[7] = (u32)outdata;
+
+ desc[0] = CMD_DESC_HDR | HDR_ONE | (8 & HDR_DESCLEN_MASK);
+ return 8 * sizeof(u32);
+}
+
+struct exec_test_result {
+ int error;
+ struct completion completion;
+};
+
+void exec_test_done(struct device *dev, u32 *desc, u32 err, void *context)
+{
+ struct exec_test_result *res = context;
+
+ if (err) {
+ char tmp[CAAM_ERROR_STR_MAX];
+ dev_err(dev, "%08x: %s\n", err, caam_jr_strstatus(tmp, err));
+ }
+
+ res->error = err;
+ complete(&res->completion);
+}
+
+static int exec_test_job(struct device *ksdev, u32 *jobdesc)
+{
+ struct exec_test_result testres;
+ struct caam_drv_private_sm *kspriv;
+ int rtn = 0;
+
+ kspriv = dev_get_drvdata(ksdev);
+
+ init_completion(&testres.completion);
+
+ rtn = caam_jr_enqueue(kspriv->smringdev, jobdesc, exec_test_done,
+ &testres);
+ if (!rtn) {
+ wait_for_completion_interruptible(&testres.completion);
+ rtn = testres.error;
+ }
+ return rtn;
+}
+
+
+int caam_sm_example_init(struct platform_device *pdev)
+{
+ struct device *ctrldev, *ksdev;
+ struct caam_drv_private *ctrlpriv;
+ struct caam_drv_private_sm *kspriv;
+ u32 unit, units, jdescsz;
+ int stat, jstat, rtnval = 0;
+ u8 __iomem *syminp, *symint, *symout = NULL;
+ dma_addr_t syminp_dma, symint_dma, symout_dma;
+ u8 __iomem *black_key_des, *black_key_aes128;
+ u8 __iomem *black_key_aes256;
+ dma_addr_t black_key_des_dma, black_key_aes128_dma;
+ dma_addr_t black_key_aes256_dma;
+ u8 __iomem *clear_key_des, *clear_key_aes128, *clear_key_aes256;
+ dma_addr_t clear_key_des_dma, clear_key_aes128_dma;
+ dma_addr_t clear_key_aes256_dma;
+ u32 __iomem *jdesc;
+ u32 keyslot_des, keyslot_aes128, keyslot_aes256 = 0;
+
+ jdesc = NULL;
+ black_key_des = black_key_aes128 = black_key_aes256 = NULL;
+ clear_key_des = clear_key_aes128 = clear_key_aes256 = NULL;
+
+ /* We can lose this cruft once we can get a pdev by name */
+ ctrldev = &pdev->dev;
+ ctrlpriv = dev_get_drvdata(ctrldev);
+ ksdev = ctrlpriv->smdev;
+ kspriv = dev_get_drvdata(ksdev);
+ if (kspriv == NULL)
+ return -ENODEV;
+
+ /* Now that we have the dev for the single SM instance, connect */
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "caam_sm_test_init() running\n");
+#endif
+ /* Probe to see what keystores are available to us */
+ units = sm_detect_keystore_units(ksdev);
+ if (!units)
+ dev_err(ksdev, "caam_sm_test: no keystore units available\n");
+
+ /*
+ * MX6 bootloader stores some stuff in unit 0, so let's
+ * use 1 or above
+ */
+ if (units < 2) {
+ dev_err(ksdev, "caam_sm_test: insufficient keystore units\n");
+ return -ENODEV;
+ }
+ unit = 1;
+
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "caam_sm_test: %d keystore units available\n", units);
+#endif
+
+ /* Initialize/Establish Keystore */
+ sm_establish_keystore(ksdev, unit); /* Initalize store in #1 */
+
+ /*
+ * Top of main test thread
+ */
+
+ /* Allocate test data blocks (input, intermediate, output) */
+ syminp = kmalloc(256, GFP_KERNEL | GFP_DMA);
+ symint = kmalloc(256, GFP_KERNEL | GFP_DMA);
+ symout = kmalloc(256, GFP_KERNEL | GFP_DMA);
+ if ((syminp == NULL) || (symint == NULL) || (symout == NULL)) {
+ rtnval = -ENOMEM;
+ dev_err(ksdev, "caam_sm_test: can't get test data buffers\n");
+ goto freemem;
+ }
+
+ /* Allocate storage for 3 black keys: encapsulated 8, 16, 32 */
+ black_key_des = kmalloc(16, GFP_KERNEL | GFP_DMA); /* padded to 16... */
+ black_key_aes128 = kmalloc(16, GFP_KERNEL | GFP_DMA);
+ black_key_aes256 = kmalloc(16, GFP_KERNEL | GFP_DMA);
+ if ((black_key_des == NULL) || (black_key_aes128 == NULL) ||
+ (black_key_aes256 == NULL)) {
+ rtnval = -ENOMEM;
+ dev_err(ksdev, "caam_sm_test: can't black key buffers\n");
+ goto freemem;
+ }
+
+ clear_key_des = kmalloc(8, GFP_KERNEL | GFP_DMA);
+ clear_key_aes128 = kmalloc(16, GFP_KERNEL | GFP_DMA);
+ clear_key_aes256 = kmalloc(32, GFP_KERNEL | GFP_DMA);
+ if ((clear_key_des == NULL) || (clear_key_aes128 == NULL) ||
+ (clear_key_aes256 == NULL)) {
+ rtnval = -ENOMEM;
+ dev_err(ksdev, "caam_sm_test: can't get clear key buffers\n");
+ goto freemem;
+ }
+
+ /* Allocate storage for job descriptor */
+ jdesc = kmalloc(8 * sizeof(u32), GFP_KERNEL | GFP_DMA);
+ if (jdesc == NULL) {
+ rtnval = -ENOMEM;
+ dev_err(ksdev, "caam_sm_test: can't get descriptor buffers\n");
+ goto freemem;
+ }
+
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "caam_sm_test: all buffers allocated\n");
+#endif
+
+ /* Load up input data block, clear outputs */
+ memcpy(syminp, symdata, 256);
+ memset(symint, 0, 256);
+ memset(symout, 0, 256);
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ syminp[0], syminp[1], syminp[2], syminp[3],
+ syminp[4], syminp[5], syminp[6], syminp[7]);
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symint[0], symint[1], symint[2], symint[3],
+ symint[4], symint[5], symint[6], symint[7]);
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symout[0], symout[1], symout[2], symout[3],
+ symout[4], symout[5], symout[6], symout[7]);
+
+ dev_info(ksdev, "caam_sm_test: data buffers initialized\n");
+#endif
+
+ /* Load up clear keys */
+ memcpy(clear_key_des, symkey, 8);
+ memcpy(clear_key_aes128, symkey, 16);
+ memcpy(clear_key_aes256, symkey, 32);
+
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "caam_sm_test: all clear keys loaded\n");
+#endif
+
+ /*
+ * Place clear keys in keystore.
+ * All the interesting stuff happens here.
+ */
+ /* 8 bit DES key */
+ stat = sm_keystore_slot_alloc(ksdev, unit, 8, &keyslot_des);
+ if (stat)
+ goto freemem;
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "caam_sm_test: 8 byte key slot in %d\n" keyslot_des);
+#endif
+ stat = sm_keystore_slot_load(ksdev, unit, keyslot_des, clear_key_des,
+ 8);
+ if (stat) {
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "caam_sm_test: can't load 8 byte key in %d\n",
+ keyslot_des);
+#endif
+ sm_keystore_slot_dealloc(ksdev, unit, keyslot_des);
+ goto freemem;
+ }
+
+ /* 16 bit AES key */
+ stat = sm_keystore_slot_alloc(ksdev, unit, 16, &keyslot_aes128);
+ if (stat) {
+ sm_keystore_slot_dealloc(ksdev, unit, keyslot_des);
+ goto freemem;
+ }
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "caam_sm_test: 16 byte key slot in %d\n",
+ keyslot_aes128);
+#endif
+ stat = sm_keystore_slot_load(ksdev, unit, keyslot_aes128,
+ clear_key_aes128, 16);
+ if (stat) {
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "caam_sm_test: can't load 16 byte key in %d\n",
+ keyslot_aes128);
+#endif
+ sm_keystore_slot_dealloc(ksdev, unit, keyslot_aes128);
+ sm_keystore_slot_dealloc(ksdev, unit, keyslot_des);
+ goto freemem;
+ }
+
+ /* 32 bit AES key */
+ stat = sm_keystore_slot_alloc(ksdev, unit, 32, &keyslot_aes256);
+ if (stat) {
+ sm_keystore_slot_dealloc(ksdev, unit, keyslot_aes128);
+ sm_keystore_slot_dealloc(ksdev, unit, keyslot_des);
+ goto freemem;
+ }
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "caam_sm_test: 32 byte key slot in %d\n",
+ keyslot_aes256);
+#endif
+ stat = sm_keystore_slot_load(ksdev, unit, keyslot_aes256,
+ clear_key_aes256, 32);
+ if (stat) {
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "caam_sm_test: can't load 32 byte key in %d\n",
+ keyslot_aes128);
+#endif
+ sm_keystore_slot_dealloc(ksdev, unit, keyslot_aes256);
+ sm_keystore_slot_dealloc(ksdev, unit, keyslot_aes128);
+ sm_keystore_slot_dealloc(ksdev, unit, keyslot_des);
+ goto freemem;
+ }
+
+ /* Encapsulate all keys as SM blobs */
+ stat = sm_keystore_slot_encapsulate(ksdev, unit, keyslot_des,
+ keyslot_des, 8, skeymod, 8);
+ if (stat) {
+ dev_info(ksdev, "caam_sm_test: can't encapsulate DES key\n");
+ goto freekeys;
+ }
+
+ stat = sm_keystore_slot_encapsulate(ksdev, unit, keyslot_aes128,
+ keyslot_aes128, 16, skeymod, 8);
+ if (stat) {
+ dev_info(ksdev, "caam_sm_test: can't encapsulate AES128 key\n");
+ goto freekeys;
+ }
+
+ stat = sm_keystore_slot_encapsulate(ksdev, unit, keyslot_aes256,
+ keyslot_aes256, 32, skeymod, 8);
+ if (stat) {
+ dev_info(ksdev, "caam_sm_test: can't encapsulate AES256 key\n");
+ goto freekeys;
+ }
+
+ /* Now decapsulate as black key blobs */
+ stat = sm_keystore_slot_decapsulate(ksdev, unit, keyslot_des,
+ keyslot_des, 8, skeymod, 8);
+ if (stat) {
+ dev_info(ksdev, "caam_sm_test: can't decapsulate DES key\n");
+ goto freekeys;
+ }
+
+ stat = sm_keystore_slot_decapsulate(ksdev, unit, keyslot_aes128,
+ keyslot_aes128, 16, skeymod, 8);
+ if (stat) {
+ dev_info(ksdev, "caam_sm_test: can't decapsulate AES128 key\n");
+ goto freekeys;
+ }
+
+ stat = sm_keystore_slot_decapsulate(ksdev, unit, keyslot_aes256,
+ keyslot_aes256, 32, skeymod, 8);
+ if (stat) {
+ dev_info(ksdev, "caam_sm_test: can't decapsulate AES128 key\n");
+ goto freekeys;
+ }
+
+ /* Extract 8/16/32 byte black keys */
+ sm_keystore_slot_read(ksdev, unit, keyslot_des, 8, black_key_des);
+ sm_keystore_slot_read(ksdev, unit, keyslot_aes128, 16,
+ black_key_aes128);
+ sm_keystore_slot_read(ksdev, unit, keyslot_aes256, 32,
+ black_key_aes256);
+
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "caam_sm_test: all black keys extracted\n");
+#endif
+
+ /* DES encrypt using 8 byte black key */
+ black_key_des_dma = dma_map_single(ksdev, black_key_des, 8,
+ DMA_TO_DEVICE);
+ dma_sync_single_for_device(ksdev, black_key_des_dma, 8, DMA_TO_DEVICE);
+ syminp_dma = dma_map_single(ksdev, syminp, 256, DMA_TO_DEVICE);
+ dma_sync_single_for_device(ksdev, syminp_dma, 256, DMA_TO_DEVICE);
+ symint_dma = dma_map_single(ksdev, symint, 256, DMA_FROM_DEVICE);
+
+ jdescsz = mk_job_desc(jdesc, black_key_des_dma, 8, syminp_dma,
+ symint_dma, 256,
+ OP_ALG_ENCRYPT | OP_ALG_ALGSEL_DES, 0);
+
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "jobdesc:\n");
+ dev_info(ksdev, "0x%08x\n", jdesc[0]);
+ dev_info(ksdev, "0x%08x\n", jdesc[1]);
+ dev_info(ksdev, "0x%08x\n", jdesc[2]);
+ dev_info(ksdev, "0x%08x\n", jdesc[3]);
+ dev_info(ksdev, "0x%08x\n", jdesc[4]);
+ dev_info(ksdev, "0x%08x\n", jdesc[5]);
+ dev_info(ksdev, "0x%08x\n", jdesc[6]);
+ dev_info(ksdev, "0x%08x\n", jdesc[7]);
+#endif
+
+ jstat = exec_test_job(ksdev, jdesc);
+
+ dma_sync_single_for_cpu(ksdev, symint_dma, 256, DMA_FROM_DEVICE);
+ dma_unmap_single(ksdev, symint_dma, 256, DMA_FROM_DEVICE);
+ dma_unmap_single(ksdev, syminp_dma, 256, DMA_TO_DEVICE);
+ dma_unmap_single(ksdev, black_key_des_dma, 8, DMA_TO_DEVICE);
+
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "input block:\n");
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ syminp[0], syminp[1], syminp[2], syminp[3],
+ syminp[4], syminp[5], syminp[6], syminp[7]);
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ syminp[8], syminp[9], syminp[10], syminp[11],
+ syminp[12], syminp[13], syminp[14], syminp[15]);
+ dev_info(ksdev, "intermediate block:\n");
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symint[0], symint[1], symint[2], symint[3],
+ symint[4], symint[5], symint[6], symint[7]);
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symint[8], symint[9], symint[10], symint[11],
+ symint[12], symint[13], symint[14], symint[15]);
+ dev_info(ksdev, "caam_sm_test: encrypt cycle with 8 byte key\n");
+#endif
+
+ /* DES decrypt using 8 byte clear key */
+ clear_key_des_dma = dma_map_single(ksdev, clear_key_des, 8,
+ DMA_TO_DEVICE);
+ dma_sync_single_for_device(ksdev, clear_key_des_dma, 8, DMA_TO_DEVICE);
+ symint_dma = dma_map_single(ksdev, symint, 256, DMA_TO_DEVICE);
+ dma_sync_single_for_device(ksdev, symint_dma, 256, DMA_TO_DEVICE);
+ symout_dma = dma_map_single(ksdev, symout, 256, DMA_FROM_DEVICE);
+
+ jdescsz = mk_job_desc(jdesc, clear_key_des_dma, 8, symint_dma,
+ symout_dma, 256,
+ OP_ALG_DECRYPT | OP_ALG_ALGSEL_DES, 0);
+
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "jobdesc:\n");
+ dev_info(ksdev, "0x%08x\n", jdesc[0]);
+ dev_info(ksdev, "0x%08x\n", jdesc[1]);
+ dev_info(ksdev, "0x%08x\n", jdesc[2]);
+ dev_info(ksdev, "0x%08x\n", jdesc[3]);
+ dev_info(ksdev, "0x%08x\n", jdesc[4]);
+ dev_info(ksdev, "0x%08x\n", jdesc[5]);
+ dev_info(ksdev, "0x%08x\n", jdesc[6]);
+ dev_info(ksdev, "0x%08x\n", jdesc[7]);
+#endif
+
+ jstat = exec_test_job(ksdev, jdesc);
+
+ dma_sync_single_for_cpu(ksdev, symout_dma, 256, DMA_FROM_DEVICE);
+ dma_unmap_single(ksdev, symout_dma, 256, DMA_FROM_DEVICE);
+ dma_unmap_single(ksdev, symint_dma, 256, DMA_TO_DEVICE);
+ dma_unmap_single(ksdev, clear_key_des_dma, 8, DMA_TO_DEVICE);
+
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "intermediate block:\n");
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symint[0], symint[1], symint[2], symint[3],
+ symint[4], symint[5], symint[6], symint[7]);
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symint[8], symint[9], symint[10], symint[11],
+ symint[12], symint[13], symint[14], symint[15]);
+ dev_info(ksdev, "decrypted block:\n");
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symout[0], symout[1], symout[2], symout[3],
+ symout[4], symout[5], symout[6], symout[7]);
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symout[8], symout[9], symout[10], symout[11],
+ symout[12], symout[13], symout[14], symout[15]);
+ dev_info(ksdev, "caam_sm_test: decrypt cycle with 8 byte key\n");
+#endif
+
+ /* Check result */
+ if (memcmp(symout, syminp, 256)) {
+ dev_info(ksdev, "caam_sm_test: 8-byte key test mismatch\n");
+ rtnval = -1;
+ goto freekeys;
+ } else
+ dev_info(ksdev, "caam_sm_test: 8-byte key test match OK\n");
+
+ /* AES-128 encrypt using 16 byte black key */
+ black_key_aes128_dma = dma_map_single(ksdev, black_key_aes128, 16,
+ DMA_TO_DEVICE);
+ dma_sync_single_for_device(ksdev, black_key_aes128_dma, 16,
+ DMA_TO_DEVICE);
+ syminp_dma = dma_map_single(ksdev, syminp, 256, DMA_TO_DEVICE);
+ dma_sync_single_for_device(ksdev, syminp_dma, 256, DMA_TO_DEVICE);
+ symint_dma = dma_map_single(ksdev, symint, 256, DMA_FROM_DEVICE);
+
+ jdescsz = mk_job_desc(jdesc, black_key_aes128_dma, 16, syminp_dma,
+ symint_dma, 256,
+ OP_ALG_ENCRYPT | OP_ALG_ALGSEL_AES, 0);
+
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "jobdesc:\n");
+ dev_info(ksdev, "0x%08x\n", jdesc[0]);
+ dev_info(ksdev, "0x%08x\n", jdesc[1]);
+ dev_info(ksdev, "0x%08x\n", jdesc[2]);
+ dev_info(ksdev, "0x%08x\n", jdesc[3]);
+ dev_info(ksdev, "0x%08x\n", jdesc[4]);
+ dev_info(ksdev, "0x%08x\n", jdesc[5]);
+ dev_info(ksdev, "0x%08x\n", jdesc[6]);
+ dev_info(ksdev, "0x%08x\n", jdesc[7]);
+#endif
+
+ jstat = exec_test_job(ksdev, jdesc);
+
+ dma_sync_single_for_cpu(ksdev, symint_dma, 256, DMA_FROM_DEVICE);
+ dma_unmap_single(ksdev, symint_dma, 256, DMA_FROM_DEVICE);
+ dma_unmap_single(ksdev, syminp_dma, 256, DMA_TO_DEVICE);
+ dma_unmap_single(ksdev, black_key_aes128_dma, 16, DMA_TO_DEVICE);
+
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "input block:\n");
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ syminp[0], syminp[1], syminp[2], syminp[3],
+ syminp[4], syminp[5], syminp[6], syminp[7]);
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ syminp[8], syminp[9], syminp[10], syminp[11],
+ syminp[12], syminp[13], syminp[14], syminp[15]);
+ dev_info(ksdev, "intermediate block:\n");
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symint[0], symint[1], symint[2], symint[3],
+ symint[4], symint[5], symint[6], symint[7]);
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symint[8], symint[9], symint[10], symint[11],
+ symint[12], symint[13], symint[14], symint[15]);
+ dev_info(ksdev, "caam_sm_test: encrypt cycle with 16 byte key\n");
+#endif
+
+ /* AES-128 decrypt using 16 byte clear key */
+ clear_key_aes128_dma = dma_map_single(ksdev, clear_key_aes128, 16,
+ DMA_TO_DEVICE);
+ dma_sync_single_for_device(ksdev, clear_key_aes128_dma, 16,
+ DMA_TO_DEVICE);
+ symint_dma = dma_map_single(ksdev, symint, 256, DMA_TO_DEVICE);
+ dma_sync_single_for_device(ksdev, symint_dma, 256, DMA_TO_DEVICE);
+ symout_dma = dma_map_single(ksdev, symout, 256, DMA_FROM_DEVICE);
+
+ jdescsz = mk_job_desc(jdesc, clear_key_aes128_dma, 16, symint_dma,
+ symout_dma, 256,
+ OP_ALG_DECRYPT | OP_ALG_ALGSEL_AES, 0);
+
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "jobdesc:\n");
+ dev_info(ksdev, "0x%08x\n", jdesc[0]);
+ dev_info(ksdev, "0x%08x\n", jdesc[1]);
+ dev_info(ksdev, "0x%08x\n", jdesc[2]);
+ dev_info(ksdev, "0x%08x\n", jdesc[3]);
+ dev_info(ksdev, "0x%08x\n", jdesc[4]);
+ dev_info(ksdev, "0x%08x\n", jdesc[5]);
+ dev_info(ksdev, "0x%08x\n", jdesc[6]);
+ dev_info(ksdev, "0x%08x\n", jdesc[7]);
+#endif
+ jstat = exec_test_job(ksdev, jdesc);
+
+ dma_sync_single_for_cpu(ksdev, symout_dma, 256, DMA_FROM_DEVICE);
+ dma_unmap_single(ksdev, symout_dma, 256, DMA_FROM_DEVICE);
+ dma_unmap_single(ksdev, symint_dma, 256, DMA_TO_DEVICE);
+ dma_unmap_single(ksdev, clear_key_aes128_dma, 16, DMA_TO_DEVICE);
+
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "intermediate block:\n");
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symint[0], symint[1], symint[2], symint[3],
+ symint[4], symint[5], symint[6], symint[7]);
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symint[8], symint[9], symint[10], symint[11],
+ symint[12], symint[13], symint[14], symint[15]);
+ dev_info(ksdev, "decrypted block:\n");
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symout[0], symout[1], symout[2], symout[3],
+ symout[4], symout[5], symout[6], symout[7]);
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symout[8], symout[9], symout[10], symout[11],
+ symout[12], symout[13], symout[14], symout[15]);
+ dev_info(ksdev, "caam_sm_test: decrypt cycle with 16 byte key\n");
+#endif
+
+ /* Check result */
+ if (memcmp(symout, syminp, 256)) {
+ dev_info(ksdev, "caam_sm_test: 16-byte key test mismatch\n");
+ rtnval = -1;
+ goto freekeys;
+ } else
+ dev_info(ksdev, "caam_sm_test: 16-byte key test match OK\n");
+
+ /* AES-256 encrypt using 32 byte black key */
+ black_key_aes256_dma = dma_map_single(ksdev, black_key_aes256, 32,
+ DMA_TO_DEVICE);
+ dma_sync_single_for_device(ksdev, black_key_aes256_dma, 32,
+ DMA_TO_DEVICE);
+ syminp_dma = dma_map_single(ksdev, syminp, 256, DMA_TO_DEVICE);
+ dma_sync_single_for_device(ksdev, syminp_dma, 256, DMA_TO_DEVICE);
+ symint_dma = dma_map_single(ksdev, symint, 256, DMA_FROM_DEVICE);
+
+ jdescsz = mk_job_desc(jdesc, black_key_aes256_dma, 32, syminp_dma,
+ symint_dma, 256,
+ OP_ALG_ENCRYPT | OP_ALG_ALGSEL_AES, 0);
+
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "jobdesc:\n");
+ dev_info(ksdev, "0x%08x\n", jdesc[0]);
+ dev_info(ksdev, "0x%08x\n", jdesc[1]);
+ dev_info(ksdev, "0x%08x\n", jdesc[2]);
+ dev_info(ksdev, "0x%08x\n", jdesc[3]);
+ dev_info(ksdev, "0x%08x\n", jdesc[4]);
+ dev_info(ksdev, "0x%08x\n", jdesc[5]);
+ dev_info(ksdev, "0x%08x\n", jdesc[6]);
+ dev_info(ksdev, "0x%08x\n", jdesc[7]);
+#endif
+
+ jstat = exec_test_job(ksdev, jdesc);
+
+ dma_sync_single_for_cpu(ksdev, symint_dma, 256, DMA_FROM_DEVICE);
+ dma_unmap_single(ksdev, symint_dma, 256, DMA_FROM_DEVICE);
+ dma_unmap_single(ksdev, syminp_dma, 256, DMA_TO_DEVICE);
+ dma_unmap_single(ksdev, black_key_aes256_dma, 32, DMA_TO_DEVICE);
+
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "input block:\n");
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ syminp[0], syminp[1], syminp[2], syminp[3],
+ syminp[4], syminp[5], syminp[6], syminp[7]);
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ syminp[8], syminp[9], syminp[10], syminp[11],
+ syminp[12], syminp[13], syminp[14], syminp[15]);
+ dev_info(ksdev, "intermediate block:\n");
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symint[0], symint[1], symint[2], symint[3],
+ symint[4], symint[5], symint[6], symint[7]);
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symint[8], symint[9], symint[10], symint[11],
+ symint[12], symint[13], symint[14], symint[15]);
+ dev_info(ksdev, "caam_sm_test: encrypt cycle with 32 byte key\n");
+#endif
+
+ /* AES-256 decrypt using 32-byte black key */
+ clear_key_aes256_dma = dma_map_single(ksdev, clear_key_aes256, 32,
+ DMA_TO_DEVICE);
+ dma_sync_single_for_device(ksdev, clear_key_aes256_dma, 32,
+ DMA_TO_DEVICE);
+ symint_dma = dma_map_single(ksdev, symint, 256, DMA_TO_DEVICE);
+ dma_sync_single_for_device(ksdev, symint_dma, 256, DMA_TO_DEVICE);
+ symout_dma = dma_map_single(ksdev, symout, 256, DMA_FROM_DEVICE);
+
+ jdescsz = mk_job_desc(jdesc, clear_key_aes256_dma, 32, symint_dma,
+ symout_dma, 256,
+ OP_ALG_DECRYPT | OP_ALG_ALGSEL_AES, 0);
+
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "jobdesc:\n");
+ dev_info(ksdev, "0x%08x\n", jdesc[0]);
+ dev_info(ksdev, "0x%08x\n", jdesc[1]);
+ dev_info(ksdev, "0x%08x\n", jdesc[2]);
+ dev_info(ksdev, "0x%08x\n", jdesc[3]);
+ dev_info(ksdev, "0x%08x\n", jdesc[4]);
+ dev_info(ksdev, "0x%08x\n", jdesc[5]);
+ dev_info(ksdev, "0x%08x\n", jdesc[6]);
+ dev_info(ksdev, "0x%08x\n", jdesc[7]);
+#endif
+
+ jstat = exec_test_job(ksdev, jdesc);
+
+ dma_sync_single_for_cpu(ksdev, symout_dma, 256, DMA_FROM_DEVICE);
+ dma_unmap_single(ksdev, symout_dma, 256, DMA_FROM_DEVICE);
+ dma_unmap_single(ksdev, symint_dma, 256, DMA_TO_DEVICE);
+ dma_unmap_single(ksdev, clear_key_aes256_dma, 32, DMA_TO_DEVICE);
+
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "intermediate block:\n");
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symint[0], symint[1], symint[2], symint[3],
+ symint[4], symint[5], symint[6], symint[7]);
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symint[8], symint[9], symint[10], symint[11],
+ symint[12], symint[13], symint[14], symint[15]);
+ dev_info(ksdev, "decrypted block:\n");
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symout[0], symout[1], symout[2], symout[3],
+ symout[4], symout[5], symout[6], symout[7]);
+ dev_info(ksdev, "0x%02x 0x%02x 0x%02x 0x%02x " \
+ "0x%02x 0x%02x 0x%02x 0x%02x\n",
+ symout[8], symout[9], symout[10], symout[11],
+ symout[12], symout[13], symout[14], symout[15]);
+ dev_info(ksdev, "caam_sm_test: decrypt cycle with 32 byte key\n");
+#endif
+
+ /* Check result */
+ if (memcmp(symout, syminp, 256)) {
+ dev_info(ksdev, "caam_sm_test: 32-byte key test mismatch\n");
+ rtnval = -1;
+ goto freekeys;
+ } else
+ dev_info(ksdev, "caam_sm_test: 32-byte key test match OK\n");
+
+
+ /* Remove 8/16/32 byte keys from keystore */
+freekeys:
+ stat = sm_keystore_slot_dealloc(ksdev, unit, keyslot_des);
+ if (stat)
+ dev_info(ksdev, "caam_sm_test: can't release slot %d\n",
+ keyslot_des);
+
+ stat = sm_keystore_slot_dealloc(ksdev, unit, keyslot_aes128);
+ if (stat)
+ dev_info(ksdev, "caam_sm_test: can't release slot %d\n",
+ keyslot_aes128);
+
+ stat = sm_keystore_slot_dealloc(ksdev, unit, keyslot_aes256);
+ if (stat)
+ dev_info(ksdev, "caam_sm_test: can't release slot %d\n",
+ keyslot_aes256);
+
+
+ /* Free resources */
+freemem:
+#ifdef SM_TEST_DETAIL
+ dev_info(ksdev, "caam_sm_test: cleaning up\n");
+#endif
+ kfree(syminp);
+ kfree(symint);
+ kfree(symout);
+ kfree(clear_key_des);
+ kfree(clear_key_aes128);
+ kfree(clear_key_aes256);
+ kfree(black_key_des);
+ kfree(black_key_aes128);
+ kfree(black_key_aes256);
+ kfree(jdesc);
+
+ /* Disconnect from keystore and leave */
+ sm_release_keystore(ksdev, unit);
+
+ return rtnval;
+}
+
+void caam_sm_example_shutdown(void)
+{
+ /* unused in present version */
+}
+
+/* Module-based initialization needs to wait for dev tree */
+#ifdef CONFIG_OF
+module_init(caam_sm_example_init);
+module_exit(caam_sm_example_shutdown);
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION("FSL CAAM Keystore Usage Example");
+MODULE_AUTHOR("Freescale Semiconductor - NMSG/MAD");
+#endif
projects / karo-tx-linux.git / commitdiff