mirror of https://github.com/ARMmbed/mbed-os.git
[NUC472/M487] Call BSP driver rather than direct register access in DES alter.
ccli8
parent
9edda18b0f
commit
c906790257
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@ -356,39 +356,40 @@ static int mbedtls_des_docrypt(uint16_t keyopt, uint8_t key[3][MBEDTLS_DES_KEY_S
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/* Init crypto module */
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crypto_init();
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/* NOTE: Don't call driver function TDES_Open in BSP because we don't want its internal multiple context (channel) support.
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* Multiple context (channel) support has done in the upper layer.
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/* Configure TDES_CTL register
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*
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* BSP TDES driver supports multiple channels. Just use channel #0.
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*
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* Relationship of keying option and TDES H/W mode configuration
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* 1: All three keys are independent ==> TDES 3-key mode (TMODE=1, 3KEYS=1)
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* 2: K1 and K2 are independent, and K3 = K1 ==> TDES 2-key mode (TMODE=1, 3KEYS=0)
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* 3: All three keys are identical, i.e. K1 = K2 = K3 ==> DES mode (TMODE=0)
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*
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* tdes_opmode is combination of TMODE/OPMODE, but TDES_Open I/F requires TMODE/OPMODE to be separate.
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* We need to divide tdes_opmode to TMODE and OPMODE.
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*
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* TDES_IN_OUT_WHL_SWAP lets TDES H/W know input/output data are arranged in below for DMA transfer:
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* 1. BE for byte sequence in word
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* 2. BE for word sequence in double-word
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*/
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CRPT->TDES_CTL = (0 << CRPT_TDES_CTL_CHANNEL_Pos) | (enc << CRPT_TDES_CTL_ENCRPT_Pos) |
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tdes_opmode | (TDES_IN_OUT_WHL_SWAP << CRPT_TDES_CTL_BLKSWAP_Pos);
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TDES_Open(0, // Channel number (0~4)
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enc, // 0: decode, 1: encode
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(tdes_opmode & CRPT_TDES_CTL_TMODE_Msk) ? 1 : 0, // 0: DES, 1: TDES
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(keyopt == 1) ? 1 : 0, // 0: TDES 2-key mode, 1: TDES 3-key mode
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tdes_opmode & CRPT_TDES_CTL_OPMODE_Msk, // ECB/CBC/CFB/OFB/CTR
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TDES_IN_OUT_WHL_SWAP); // TDES_NO_SWAP~TDES_IN_OUT_WHL_SWAP
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// Keying option 1: All three keys are independent.
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// Keying option 2: K1 and K2 are independent, and K3 = K1.
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// Keying option 3: All three keys are identical, i.e. K1 = K2 = K3.
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if (keyopt == 1) {
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CRPT->TDES_CTL |= CRPT_TDES_CTL_3KEYS_Msk;
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} else {
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CRPT->TDES_CTL &= ~CRPT_TDES_CTL_3KEYS_Msk;
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/* Set DES/TDES keys
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*
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* TDES_SetKey requires 3x2 word array. Change 3x8 byte array to 3x2 word array.
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*/
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unsigned i;
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uint32_t keys3x2[3][2];
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for (i = 0; i < 3; i ++ ) {
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keys3x2[i][0] = nu_get32_be(key[i] + 0);
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keys3x2[i][1] = nu_get32_be(key[i] + 4);
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}
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/* Set DES/TDES keys
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*
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* NOTE: TDES_SetKey in BSP is not used because we need to make up an extra 2-dimension array to pass keys.
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*/
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uint32_t val;
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volatile uint32_t *tdes_key = (uint32_t *) ((uint32_t) &CRPT->TDES0_KEY1H + (0x40 * 0));
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val = nu_get32_be(key[0] + 0);
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*tdes_key ++ = val;
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val = nu_get32_be(key[0] + 4);
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*tdes_key ++ = val;
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val = nu_get32_be(key[1] + 0);
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*tdes_key ++ = val;
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val = nu_get32_be(key[1] + 4);
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*tdes_key ++ = val;
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val = nu_get32_be(key[2] + 0);
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*tdes_key ++ = val;
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val = nu_get32_be(key[2] + 4);
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*tdes_key ++ = val;
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TDES_SetKey(0, keys3x2);
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uint32_t rmn = length;
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const unsigned char *in_pos = input;
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@ -406,11 +407,8 @@ static int mbedtls_des_docrypt(uint16_t keyopt, uint8_t key[3][MBEDTLS_DES_KEY_S
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TDES_SetDMATransfer(0, (uint32_t) dmabuf_in, (uint32_t) dmabuf_out, data_len);
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/* Start enc/dec.
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*
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* NOTE: Don't call driver function TDES_Start in BSP because of the multiple context (channel) reason as above.
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*/
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CRPT->TDES_CTL |= CRPT_TDES_CTL_START_Msk | (CRYPTO_DMA_ONE_SHOT << CRPT_TDES_CTL_DMALAST_Pos);
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/* Start enc/dec */
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TDES_Start(0, CRYPTO_DMA_ONE_SHOT);
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while (CRPT->TDES_STS & CRPT_TDES_STS_BUSY_Msk);
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memcpy(out_pos, dmabuf_out, data_len);
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@ -356,39 +356,40 @@ static int mbedtls_des_docrypt(uint16_t keyopt, uint8_t key[3][MBEDTLS_DES_KEY_S
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/* Init crypto module */
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crypto_init();
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/* NOTE: Don't call driver function TDES_Open in BSP because we don't want its internal multiple context (channel) support.
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* Multiple context (channel) support has done in the upper layer.
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/* Configure TDES_CTL register
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*
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* BSP TDES driver supports multiple channels. Just use channel #0.
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*
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* Relationship of keying option and TDES H/W mode configuration
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* 1: All three keys are independent ==> TDES 3-key mode (TMODE=1, 3KEYS=1)
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* 2: K1 and K2 are independent, and K3 = K1 ==> TDES 2-key mode (TMODE=1, 3KEYS=0)
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* 3: All three keys are identical, i.e. K1 = K2 = K3 ==> DES mode (TMODE=0)
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*
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* tdes_opmode is combination of TMODE/OPMODE, but TDES_Open I/F requires TMODE/OPMODE to be separate.
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* We need to divide tdes_opmode to TMODE and OPMODE.
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*
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* TDES_IN_OUT_WHL_SWAP lets TDES H/W know input/output data are arranged in below for DMA transfer:
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* 1. BE for byte sequence in word
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* 2. BE for word sequence in double-word
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*/
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CRPT->TDES_CTL = (0 << CRPT_TDES_CTL_CHANNEL_Pos) | (enc << CRPT_TDES_CTL_ENCRPT_Pos) |
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tdes_opmode | (TDES_IN_OUT_WHL_SWAP << CRPT_TDES_CTL_BLKSWAP_Pos);
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TDES_Open(0, // Channel number (0~4)
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enc, // 0: decode, 1: encode
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(tdes_opmode & CRPT_TDES_CTL_TMODE_Msk) ? 1 : 0, // 0: DES, 1: TDES
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(keyopt == 1) ? 1 : 0, // 0: TDES 2-key mode, 1: TDES 3-key mode
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tdes_opmode & CRPT_TDES_CTL_OPMODE_Msk, // ECB/CBC/CFB/OFB/CTR
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TDES_IN_OUT_WHL_SWAP); // TDES_NO_SWAP~TDES_IN_OUT_WHL_SWAP
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// Keying option 1: All three keys are independent.
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// Keying option 2: K1 and K2 are independent, and K3 = K1.
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// Keying option 3: All three keys are identical, i.e. K1 = K2 = K3.
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if (keyopt == 1) {
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CRPT->TDES_CTL |= CRPT_TDES_CTL_3KEYS_Msk;
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} else {
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CRPT->TDES_CTL &= ~CRPT_TDES_CTL_3KEYS_Msk;
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/* Set DES/TDES keys
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*
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* TDES_SetKey requires 3x2 word array. Change 3x8 byte array to 3x2 word array.
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*/
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unsigned i;
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uint32_t keys3x2[3][2];
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for (i = 0; i < 3; i ++ ) {
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keys3x2[i][0] = nu_get32_be(key[i] + 0);
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keys3x2[i][1] = nu_get32_be(key[i] + 4);
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}
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/* Set DES/TDES keys
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*
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* NOTE: TDES_SetKey in BSP is not used because we need to make up an extra 2-dimension array to pass keys.
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*/
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uint32_t val;
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volatile uint32_t *tdes_key = (uint32_t *) ((uint32_t) &CRPT->TDES0_KEY1H + (0x40 * 0));
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val = nu_get32_be(key[0] + 0);
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*tdes_key ++ = val;
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val = nu_get32_be(key[0] + 4);
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*tdes_key ++ = val;
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val = nu_get32_be(key[1] + 0);
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*tdes_key ++ = val;
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val = nu_get32_be(key[1] + 4);
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*tdes_key ++ = val;
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val = nu_get32_be(key[2] + 0);
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*tdes_key ++ = val;
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val = nu_get32_be(key[2] + 4);
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*tdes_key ++ = val;
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TDES_SetKey(0, keys3x2);
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uint32_t rmn = length;
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const unsigned char *in_pos = input;
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@ -406,11 +407,8 @@ static int mbedtls_des_docrypt(uint16_t keyopt, uint8_t key[3][MBEDTLS_DES_KEY_S
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TDES_SetDMATransfer(0, (uint32_t) dmabuf_in, (uint32_t) dmabuf_out, data_len);
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/* Start enc/dec.
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*
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* NOTE: Don't call driver function TDES_Start in BSP because of the multiple context (channel) reason as above.
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*/
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CRPT->TDES_CTL |= CRPT_TDES_CTL_START_Msk | (CRYPTO_DMA_ONE_SHOT << CRPT_TDES_CTL_DMALAST_Pos);
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/* Start enc/dec */
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TDES_Start(0, CRYPTO_DMA_ONE_SHOT);
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while (CRPT->TDES_STS & CRPT_TDES_STS_BUSY_Msk);
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memcpy(out_pos, dmabuf_out, data_len);
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