diff options
Diffstat (limited to 'drivers/crypto/caam/sm_test.c')
| -rw-r--r-- | drivers/crypto/caam/sm_test.c | 796 |
1 files changed, 796 insertions, 0 deletions
diff --git a/drivers/crypto/caam/sm_test.c b/drivers/crypto/caam/sm_test.c new file mode 100644 index 000000000000..1e00b61584fc --- /dev/null +++ b/drivers/crypto/caam/sm_test.c @@ -0,0 +1,796 @@ + +/* + * Secure Memory / Keystore Exemplification Module + * Copyright (c) 2012 Freescale Semiconductor. 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 |