From 2eeb4ee97ef8ebf92f4097ddba0dfc9654370196 Mon Sep 17 00:00:00 2001 From: Jim Liu Date: Tue, 7 Jun 2022 16:32:09 +0800 Subject: [PATCH] crypto: nuvoton: Add NPCM7xx SHA driver add nuvoton BMC npcm750 SHA driver Signed-off-by: Jim Liu --- drivers/crypto/nuvoton/Kconfig | 6 + drivers/crypto/nuvoton/Makefile | 1 + drivers/crypto/nuvoton/npcm_sha.c | 897 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 904 insertions(+) create mode 100644 drivers/crypto/nuvoton/npcm_sha.c diff --git a/drivers/crypto/nuvoton/Kconfig b/drivers/crypto/nuvoton/Kconfig index c4ab067..034fcad 100644 --- a/drivers/crypto/nuvoton/Kconfig +++ b/drivers/crypto/nuvoton/Kconfig @@ -6,3 +6,9 @@ config NPCM_AES AES (Advanced Encryption Standard). This algorithm uses a symmetric key and is widely used as a streaming cipher. This command only supports AES256-CBC. + +config NPCM_SHA + bool "Enable NPCM cryptographic HW SHA accelerator" + help + This option enables support of NPCM cryptographic HW SHA accelerator. + It supports SHA1 and SHA256 hashing algorithms. diff --git a/drivers/crypto/nuvoton/Makefile b/drivers/crypto/nuvoton/Makefile index 5b2fb90..5a1173d 100644 --- a/drivers/crypto/nuvoton/Makefile +++ b/drivers/crypto/nuvoton/Makefile @@ -1 +1,2 @@ obj-$(CONFIG_NPCM_AES) += npcm_aes.o +obj-$(CONFIG_NPCM_SHA) += npcm_sha.o diff --git a/drivers/crypto/nuvoton/npcm_sha.c b/drivers/crypto/nuvoton/npcm_sha.c new file mode 100644 index 0000000..7ebdfa1 --- /dev/null +++ b/drivers/crypto/nuvoton/npcm_sha.c @@ -0,0 +1,897 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2022 Nuvoton Technology Corp. + */ + +#include +#include +#include +#include +#include +#include + +#define HASH_DIG_H_NUM 8 + +#define HASH_CTR_STS_SHA_EN BIT(0) +#define HASH_CTR_STS_SHA_BUSY BIT(1) +#define HASH_CTR_STS_SHA_RST BIT(2) +#define HASH_CFG_SHA1_SHA2 BIT(0) + +/* SHA type */ +enum npcm_sha_type { + npcm_sha_type_sha2 = 0, + npcm_sha_type_sha1, + npcm_sha_type_num +}; + +struct npcm_sha_regs { + unsigned int hash_data_in; + unsigned char hash_ctr_sts; + unsigned char reserved_0[0x03]; + unsigned char hash_cfg; + unsigned char reserved_1[0x03]; + unsigned char hash_ver; + unsigned char reserved_2[0x13]; + unsigned int hash_dig[HASH_DIG_H_NUM]; +}; + +struct npcm_sha_priv { + struct npcm_sha_regs *regs; +}; + +static struct npcm_sha_priv *sha_priv; + +#ifdef SHA_DEBUG_MODULE +#define sha_print(fmt, args...) printf(fmt, ##args) +#else +#define sha_print(fmt, args...) (void)0 +#endif + +#define SHA_BLOCK_LENGTH (512 / 8) +#define SHA_2_HASH_LENGTH (256 / 8) +#define SHA_1_HASH_LENGTH (160 / 8) +#define SHA_HASH_LENGTH(type) ((type == npcm_sha_type_sha2) ? \ + (SHA_2_HASH_LENGTH) : (SHA_1_HASH_LENGTH)) + +#define SHA_SECRUN_BUFF_SIZE 64 +#define SHA_TIMEOUT 100 +#define SHA_DATA_LAST_BYTE 0x80 + +#define SHA2_NUM_OF_SELF_TESTS 3 +#define SHA1_NUM_OF_SELF_TESTS 4 + +#define NUVOTON_ALIGNMENT 4 + +/*-----------------------------------------------------------------------------*/ +/* SHA instance struct handler */ +/*-----------------------------------------------------------------------------*/ +struct SHA_HANDLE_T { + u32 hv[SHA_2_HASH_LENGTH / sizeof(u32)]; + u32 length0; + u32 length1; + u32 block[SHA_BLOCK_LENGTH / sizeof(u32)]; + u8 type; + bool active; +}; + +// The # of bytes currently in the sha block buffer +#define SHA_BUFF_POS(length) ((length) & (SHA_BLOCK_LENGTH - 1)) + +// The # of free bytes in the sha block buffer +#define SHA_BUFF_FREE(length) (SHA_BLOCK_LENGTH - SHA_BUFF_POS(length)) + +static void SHA_FlushLocalBuffer_l(const u32 *buff); +static int SHA_BusyWait_l(void); +static void SHA_GetShaDigest_l(u8 *hashdigest, u8 type); +static void SHA_SetShaDigest_l(const u32 *hashdigest, u8 type); +static void SHA_SetBlock_l(const u8 *data, u32 len, u16 position, u32 *block); +static void SHA_ClearBlock_l(u16 len, u16 position, u32 *block); +static void SHA_SetLength32_l(struct SHA_HANDLE_T *handleptr, u32 *block); + +static int SHA_Init(struct SHA_HANDLE_T *handleptr); +static int SHA_Start(struct SHA_HANDLE_T *handleptr, u8 type); +static int SHA_Update(struct SHA_HANDLE_T *handleptr, const u8 *buffer, u32 len); +static int SHA_Finish(struct SHA_HANDLE_T *handleptr, u8 *hashdigest); +static int SHA_Reset(void); +static int SHA_Power(bool on); +#ifdef SHA_PRINT +static void SHA_PrintRegs(void); +static void SHA_PrintVersion(void); +#endif + +static struct SHA_HANDLE_T sha_handle; + +/*----------------------------------------------------------------------------*/ +/* Checks if give function returns int error, and returns the error */ +/* immediately after SHA disabling */ +/*----------------------------------------------------------------------------*/ +int npcm_sha_check(int status) +{ + if (status != 0) { + SHA_Power(false); + return status; + } + return 0; +} + +/*----------------------------------------------------------------------------*/ +/* Function: npcm_sha_calc */ +/* */ +/* Parameters: type - SHA module type */ +/* inBuff - Pointer to a buffer containing the data to */ +/* be hashed */ +/* len - Length of the data to hash */ +/* hashDigest - Pointer to a buffer where the reseulting */ +/* digest will be copied to */ +/* */ +/* Returns: 0 on success or other int error code on error */ +/* Side effects: */ +/* Description: */ +/* This routine performs complete SHA calculation in one */ +/* step */ +/*----------------------------------------------------------------------------*/ +int npcm_sha_calc(u8 type, const u8 *inbuff, u32 len, u8 *hashdigest) +{ + int status; + struct SHA_HANDLE_T handle; + + SHA_Init(&handle); + SHA_Power(true); + SHA_Reset(); + SHA_Start(&handle, type); + status = SHA_Update(&handle, inbuff, len); + npcm_sha_check(status); + status = SHA_Finish(&handle, hashdigest); + npcm_sha_check(status); + SHA_Power(false); + + return 0; +} + +/* + * Computes hash value of input pbuf using h/w acceleration + * + * @param in_addr A pointer to the input buffer + * @param bufleni Byte length of input buffer + * @param out_addr A pointer to the output buffer. When complete + * 32 bytes are copied to pout[0]...pout[31]. Thus, a user + * should allocate at least 32 bytes at pOut in advance. + * @param chunk_size chunk size for sha256 + */ +void hw_sha256(const uchar *in_addr, uint buflen, uchar *out_addr, uint chunk_size) +{ + puts("\nhw_sha256 using BMC HW accelerator\t"); + npcm_sha_calc(npcm_sha_type_sha2, (u8 *)in_addr, buflen, (u8 *)out_addr); +} + +/* + * Computes hash value of input pbuf using h/w acceleration + * + * @param in_addr A pointer to the input buffer + * @param bufleni Byte length of input buffer + * @param out_addr A pointer to the output buffer. When complete + * 32 bytes are copied to pout[0]...pout[31]. Thus, a user + * should allocate at least 32 bytes at pOut in advance. + * @param chunk_size chunk_size for sha1 + */ +void hw_sha1(const uchar *in_addr, uint buflen, uchar *out_addr, uint chunk_size) +{ + puts("\nhw_sha1 using BMC HW accelerator\t"); + npcm_sha_calc(npcm_sha_type_sha1, (u8 *)in_addr, buflen, (u8 *)out_addr); +} + +/* + * Create the context for sha progressive hashing using h/w acceleration + * + * @algo: Pointer to the hash_algo struct + * @ctxp: Pointer to the pointer of the context for hashing + * @return 0 if ok, -ve on error + */ +int hw_sha_init(struct hash_algo *algo, void **ctxp) +{ + const char *algo_name1 = "sha1"; + const char *algo_name2 = "sha256"; + + SHA_Init(&sha_handle); + SHA_Power(true); + SHA_Reset(); + if (!strcmp(algo_name1, algo->name)) + return SHA_Start(&sha_handle, npcm_sha_type_sha1); + else if (!strcmp(algo_name2, algo->name)) + return SHA_Start(&sha_handle, npcm_sha_type_sha2); + else + return -EPROTO; +} + +/* + * Update buffer for sha progressive hashing using h/w acceleration + * + * The context is freed by this function if an error occurs. + * + * @algo: Pointer to the hash_algo struct + * @ctx: Pointer to the context for hashing + * @buf: Pointer to the buffer being hashed + * @size: Size of the buffer being hashed + * @is_last: 1 if this is the last update; 0 otherwise + * @return 0 if ok, -ve on error + */ +int hw_sha_update(struct hash_algo *algo, void *ctx, const void *buf, + unsigned int size, int is_last) +{ + return SHA_Update(&sha_handle, buf, size); +} + +/* + * Copy sha hash result at destination location + * + * The context is freed after completion of hash operation or after an error. + * + * @algo: Pointer to the hash_algo struct + * @ctx: Pointer to the context for hashing + * @dest_buf: Pointer to the destination buffer where hash is to be copied + * @size: Size of the buffer being hashed + * @return 0 if ok, -ve on error + */ +int hw_sha_finish(struct hash_algo *algo, void *ctx, void *dest_buf, int size) +{ + int status; + + status = SHA_Finish(&sha_handle, dest_buf); + npcm_sha_check(status); + return SHA_Power(false); +} + +/*----------------------------------------------------------------------------*/ +/* Function: SHA_Init */ +/* */ +/* Parameters: handlePtr - SHA processing handle pointer */ +/* Returns: 0 on success or other int error code on error. */ +/* Side effects: */ +/* Description: */ +/* This routine initialize the SHA module */ +/*----------------------------------------------------------------------------*/ +static int SHA_Init(struct SHA_HANDLE_T *handleptr) +{ + handleptr->active = false; + + return 0; +} + +/*----------------------------------------------------------------------------*/ +/* Function: SHA_Start */ +/* */ +/* Parameters: handlePtr - SHA processing handle pointer */ +/* type - SHA module type */ +/* */ +/* Returns: 0 on success or other int error code on error. */ +/* Side effects: */ +/* Description: */ +/* This routine start a single SHA process */ +/*----------------------------------------------------------------------------*/ +static int SHA_Start(struct SHA_HANDLE_T *handleptr, u8 type) +{ + struct npcm_sha_regs *regs = sha_priv->regs; + + // Initialize handle + handleptr->length0 = 0; + handleptr->length1 = 0; + handleptr->type = type; + handleptr->active = true; + + // Set SHA type + writeb(handleptr->type & HASH_CFG_SHA1_SHA2, ®s->hash_cfg); + + // Reset SHA hardware + SHA_Reset(); + + /* The handlePtr->hv is initialized with the correct IV as the SHA engine + * automatically fill the HASH_DIG_Hn registers according to SHA spec + * (following SHA_RST assertion) + */ + SHA_GetShaDigest_l((u8 *)handleptr->hv, type); + + // Init block with zeros + memset(handleptr->block, 0, sizeof(handleptr->block)); + + return 0; +} + +/*----------------------------------------------------------------------------*/ +/* Function: SHA_Update */ +/* */ +/* Parameters: handlePtr - SHA processing handle pointer */ +/* buffer - Pointer to the data that will be added to */ +/* the hash calculation */ +/* len - Length of data to add to SHA calculation */ +/* */ +/* */ +/* Returns: 0 on success or other int error code on error */ +/* Side effects: */ +/* Description: */ +/* This routine adds data to previously started SHA */ +/* calculation */ +/*----------------------------------------------------------------------------*/ +static int SHA_Update(struct SHA_HANDLE_T *handleptr, const u8 *buffer, u32 len) +{ + struct npcm_sha_regs *regs = sha_priv->regs; + u32 localbuffer[SHA_SECRUN_BUFF_SIZE / sizeof(u32)]; + u32 bufferlen = len; + u16 pos = 0; + u8 *blockptr; + int status; + + // Error check + if (!handleptr->active) + return -EPROTO; + + // Wait till SHA is not busy + status = SHA_BusyWait_l(); + npcm_sha_check(status); + + // Set SHA type + writeb(handleptr->type & HASH_CFG_SHA1_SHA2, ®s->hash_cfg); + + // Write SHA latest digest into SHA module + SHA_SetShaDigest_l(handleptr->hv, handleptr->type); + + // Set number of unhashed bytes which remained from last update + pos = SHA_BUFF_POS(handleptr->length0); + + // Copy unhashed bytes which remained from last update to secrun buffer + SHA_SetBlock_l((u8 *)handleptr->block, pos, 0, localbuffer); + + while (len) { + // Wait for the hardware to be available (in case we are hashing) + status = SHA_BusyWait_l(); + npcm_sha_check(status); + + // Move as much bytes as we can into the secrun buffer + bufferlen = min(len, SHA_BUFF_FREE(handleptr->length0)); + + // Copy current given buffer to the secrun buffer + SHA_SetBlock_l((u8 *)buffer, bufferlen, pos, localbuffer); + + // Update size of hashed bytes + handleptr->length0 += bufferlen; + + if (handleptr->length0 < bufferlen) + handleptr->length1++; + + // Update length of data left to digest + len -= bufferlen; + + // Update given buffer pointer + buffer += bufferlen; + + // If secrun buffer is full + if (SHA_BUFF_POS(handleptr->length0) == 0) { + /* We just filled up the buffer perfectly, so let it hash (we'll + * unload the hash only when we are done with all hashing) + */ + SHA_FlushLocalBuffer_l(localbuffer); + + pos = 0; + bufferlen = 0; + } + } + + // Wait till SHA is not busy + status = SHA_BusyWait_l(); + npcm_sha_check(status); + + /* Copy unhashed bytes from given buffer to handle block for next update/finish */ + blockptr = (u8 *)handleptr->block; + while (bufferlen) + blockptr[--bufferlen + pos] = *(--buffer); + + // Save SHA current digest + SHA_GetShaDigest_l((u8 *)handleptr->hv, handleptr->type); + + return 0; +} + +/*----------------------------------------------------------------------------*/ +/* Function: SHA_Finish */ +/* */ +/* Parameters: handlePtr - SHA processing handle pointer */ +/* hashDigest - Pointer to a buffer where the final digest */ +/* will be copied to */ +/* */ +/* Returns: 0 on success or other int error code on error */ +/* Side effects: */ +/* Description: */ +/* This routine finish SHA calculation and get */ +/* the resulting SHA digest */ +/*----------------------------------------------------------------------------*/ +static int SHA_Finish(struct SHA_HANDLE_T *handleptr, u8 *hashdigest) +{ + struct npcm_sha_regs *regs = sha_priv->regs; + u32 localbuffer[SHA_SECRUN_BUFF_SIZE / sizeof(u32)]; + const u8 lastbyte = SHA_DATA_LAST_BYTE; + u16 pos; + int status; + + // Error check + if (!handleptr->active) + return -EPROTO; + + // Set SHA type + writeb(handleptr->type & HASH_CFG_SHA1_SHA2, ®s->hash_cfg); + + // Wait till SHA is not busy + status = SHA_BusyWait_l(); + npcm_sha_check(status); + + // Finish off the current buffer with the SHA spec'ed padding + pos = SHA_BUFF_POS(handleptr->length0); + + // Init SHA digest + SHA_SetShaDigest_l(handleptr->hv, handleptr->type); + + // Load data into secrun buffer + SHA_SetBlock_l((u8 *)handleptr->block, pos, 0, localbuffer); + + // Set data last byte as in SHA algorithm spec + SHA_SetBlock_l(&lastbyte, 1, pos++, localbuffer); + + // If the remainder of data is longer then one block + if (pos > (SHA_BLOCK_LENGTH - 8)) { + /* The length will be in the next block Pad the rest of the last block with 0's */ + SHA_ClearBlock_l((SHA_BLOCK_LENGTH - pos), pos, localbuffer); + + // Hash the current block + SHA_FlushLocalBuffer_l(localbuffer); + + pos = 0; + + // Wait till SHA is not busy + status = SHA_BusyWait_l(); + npcm_sha_check(status); + } + + // Pad the rest of the last block with 0's except for the last 8-3 bytes + SHA_ClearBlock_l((SHA_BLOCK_LENGTH - (8 - 3)) - pos, pos, localbuffer); + + /* The last 8-3 bytes are set to the bit-length of the message in big-endian form */ + SHA_SetLength32_l(handleptr, localbuffer); + + // Hash all that, and save the hash for the caller + SHA_FlushLocalBuffer_l(localbuffer); + + // Wait till SHA is not busy + status = SHA_BusyWait_l(); + npcm_sha_check(status); + + // Save SHA final digest into given buffer + SHA_GetShaDigest_l(hashdigest, handleptr->type); + + // Free handle + handleptr->active = false; + + return 0; +} + +/*----------------------------------------------------------------------------*/ +/* Function: SHA_Reset */ +/* */ +/* Parameters: none */ +/* Returns: none */ +/* Side effects: */ +/* Description: */ +/* This routine reset SHA module */ +/*----------------------------------------------------------------------------*/ +static int SHA_Reset(void) +{ + struct npcm_sha_regs *regs = sha_priv->regs; + + writel(readl(®s->hash_ctr_sts) | HASH_CTR_STS_SHA_RST, ®s->hash_ctr_sts); + + return 0; +} + +/*----------------------------------------------------------------------------*/ +/* Function: SHA_Power */ +/* */ +/* Parameters: on - true enable the module, false disable the module */ +/* Returns: none */ +/* Side effects: */ +/* Description: */ +/* This routine set SHA module power on/off */ +/*----------------------------------------------------------------------------*/ +static int SHA_Power(bool on) +{ + struct npcm_sha_regs *regs = sha_priv->regs; + u8 hash_sts; + + hash_sts = readb(®s->hash_ctr_sts) & ~HASH_CTR_STS_SHA_EN; + writeb(hash_sts | (on & HASH_CTR_STS_SHA_EN), ®s->hash_ctr_sts); + + return 0; +} + +#ifdef SHA_PRINT +/*----------------------------------------------------------------------------*/ +/* Function: SHA_PrintRegs */ +/* */ +/* Parameters: none */ +/* Returns: none */ +/* Side effects: */ +/* Description: */ +/* This routine prints the module registers */ +/*----------------------------------------------------------------------------*/ +static void SHA_PrintRegs(void) +{ +#ifdef SHA_DEBUG_MODULE + struct npcm_sha_regs *regs = sha_priv->regs; +#endif + unsigned int i; + + sha_print("/*--------------*/\n"); + sha_print("/* SHA */\n"); + sha_print("/*--------------*/\n\n"); + + sha_print("HASH_CTR_STS = 0x%02X\n", readb(®s->hash_ctr_sts)); + sha_print("HASH_CFG = 0x%02X\n", readb(®s->hash_cfg)); + + for (i = 0; i < HASH_DIG_H_NUM; i++) + sha_print("HASH_DIG_H%d = 0x%08X\n", i, readl(®s->hash_dig[i])); + + sha_print("HASH_VER = 0x%08X\n", readb(®s->hash_ver)); + + sha_print("\n"); +} + +/*----------------------------------------------------------------------------*/ +/* Function: SHA_PrintVersion */ +/* */ +/* Parameters: none */ +/* Returns: none */ +/* Side effects: */ +/* Description: */ +/* This routine prints the module version */ +/*----------------------------------------------------------------------------*/ +static void SHA_PrintVersion(void) +{ + struct npcm_sha_regs *regs = sha_priv->regs; + + printf("SHA MODULE VER = %d\n", readb(®s->hash_ver)); +} +#endif + +/*----------------------------------------------------------------------------*/ +/* Function: npcm_sha_selftest */ +/* */ +/* Parameters: type - SHA module type */ +/* Returns: 0 on success or other int error code on error */ +/* Side effects: */ +/* Description: */ +/* This routine performs various tests on the SHA HW and SW */ +/*----------------------------------------------------------------------------*/ +int npcm_sha_selftest(u8 type) +{ + int status; + struct SHA_HANDLE_T handle; + u8 hashdigest[max(SHA_1_HASH_LENGTH, SHA_2_HASH_LENGTH)]; + u16 i, j; + + /*------------------------------------------------------------------------*/ + /* SHA1 tests info */ + /*------------------------------------------------------------------------*/ + + static const u8 sha1selftestbuff[SHA1_NUM_OF_SELF_TESTS][94] = { + {"abc"}, + {"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"}, + {"0123456789012345678901234567890123456789012345678901234567890123"}, + {0x30, 0x5c, 0x30, 0x2c, 0x02, 0x01, 0x00, 0x30, 0x09, 0x06, 0x05, 0x2b, + 0x0e, 0x03, 0x02, 0x1a, 0x05, 0x00, 0x30, 0x06, 0x06, 0x04, 0x67, 0x2a, + 0x01, 0x0c, 0x04, 0x14, 0xe1, 0xb6, 0x93, 0xfe, 0x33, 0x43, 0xc1, 0x20, + 0x5d, 0x4b, 0xaa, 0xb8, 0x63, 0xfb, 0xcf, 0x6c, 0x46, 0x1e, 0x88, 0x04, + 0x30, 0x2c, 0x02, 0x01, 0x00, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, 0x03, + 0x02, 0x1a, 0x05, 0x00, 0x30, 0x06, 0x06, 0x04, 0x67, 0x2a, 0x01, 0x0c, + 0x04, 0x14, 0x13, 0xc1, 0x0c, 0xfc, 0xc8, 0x92, 0xd7, 0xde, 0x07, 0x1c, + 0x40, 0xde, 0x4f, 0xcd, 0x07, 0x5b, 0x68, 0x20, 0x5a, 0x6c} + }; + + static const u8 sha1selftestbufflen[SHA1_NUM_OF_SELF_TESTS] = { + 3, 56, 64, 94 + }; + + static const u8 sha1selftestexpres[SHA1_NUM_OF_SELF_TESTS][SHA_1_HASH_LENGTH] = { + {0xA9, 0x99, 0x3E, 0x36, + 0x47, 0x06, 0x81, 0x6A, + 0xBA, 0x3E, 0x25, 0x71, + 0x78, 0x50, 0xC2, 0x6C, + 0x9C, 0xD0, 0xD8, 0x9D}, + {0x84, 0x98, 0x3E, 0x44, + 0x1C, 0x3B, 0xD2, 0x6E, + 0xBA, 0xAE, 0x4A, 0xA1, + 0xF9, 0x51, 0x29, 0xE5, + 0xE5, 0x46, 0x70, 0xF1}, + {0xCF, 0x08, 0x00, 0xF7, + 0x64, 0x4A, 0xCE, 0x3C, + 0xB4, 0xC3, 0xFA, 0x33, + 0x38, 0x8D, 0x3B, 0xA0, + 0xEA, 0x3C, 0x8B, 0x6E}, + {0xc9, 0x84, 0x45, 0xc8, + 0x64, 0x04, 0xb1, 0xe3, + 0x3c, 0x6b, 0x0a, 0x8c, + 0x8b, 0x80, 0x94, 0xfc, + 0xf3, 0xc9, 0x98, 0xab} + }; + + /*------------------------------------------------------------------------*/ + /* SHA2 tests info */ + /*------------------------------------------------------------------------*/ + + static const u8 sha2selftestbuff[SHA2_NUM_OF_SELF_TESTS][100] = { + { "abc" }, + { "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" }, + {'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', + 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', + 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', + 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', + 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', + 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', + 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', + 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', + 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', + 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a'} + }; + + static const u8 sha2selftestbufflen[SHA2_NUM_OF_SELF_TESTS] = { + 3, 56, 100 + }; + + static const u8 sha2selftestexpres[SHA2_NUM_OF_SELF_TESTS][SHA_2_HASH_LENGTH] = { + /* + * SHA-256 test vectors + */ + { 0xBA, 0x78, 0x16, 0xBF, 0x8F, 0x01, 0xCF, 0xEA, + 0x41, 0x41, 0x40, 0xDE, 0x5D, 0xAE, 0x22, 0x23, + 0xB0, 0x03, 0x61, 0xA3, 0x96, 0x17, 0x7A, 0x9C, + 0xB4, 0x10, 0xFF, 0x61, 0xF2, 0x00, 0x15, 0xAD }, + { 0x24, 0x8D, 0x6A, 0x61, 0xD2, 0x06, 0x38, 0xB8, + 0xE5, 0xC0, 0x26, 0x93, 0x0C, 0x3E, 0x60, 0x39, + 0xA3, 0x3C, 0xE4, 0x59, 0x64, 0xFF, 0x21, 0x67, + 0xF6, 0xEC, 0xED, 0xD4, 0x19, 0xDB, 0x06, 0xC1 }, + { 0xCD, 0xC7, 0x6E, 0x5C, 0x99, 0x14, 0xFB, 0x92, + 0x81, 0xA1, 0xC7, 0xE2, 0x84, 0xD7, 0x3E, 0x67, + 0xF1, 0x80, 0x9A, 0x48, 0xA4, 0x97, 0x20, 0x0E, + 0x04, 0x6D, 0x39, 0xCC, 0xC7, 0x11, 0x2C, 0xD0 }, + }; + + if (type == npcm_sha_type_sha1) { + /*--------------------------------------------------------------------*/ + /* SHA 1 TESTS */ + /*--------------------------------------------------------------------*/ + for (i = 0; i < SHA1_NUM_OF_SELF_TESTS; i++) { + if (i != 3) { + status = npcm_sha_calc(npcm_sha_type_sha1, sha1selftestbuff[i], sha1selftestbufflen[i], hashdigest); + npcm_sha_check(status); + } else { + SHA_Power(true); + SHA_Reset(); + status = SHA_Start(&handle, npcm_sha_type_sha1); + npcm_sha_check(status); + status = SHA_Update(&handle, sha1selftestbuff[i], 73); + npcm_sha_check(status); + status = SHA_Update(&handle, &sha1selftestbuff[i][73], sha1selftestbufflen[i] - 73); + npcm_sha_check(status); + status = SHA_Finish(&handle, hashdigest); + npcm_sha_check(status); + SHA_Power(false); + } + + if (memcmp(hashdigest, sha1selftestexpres[i], SHA_1_HASH_LENGTH)) + return -1; + } + + } else { + /*--------------------------------------------------------------------*/ + /* SHA 2 TESTS */ + /*--------------------------------------------------------------------*/ + for (i = 0; i < SHA2_NUM_OF_SELF_TESTS; i++) { + SHA_Power(true); + SHA_Reset(); + status = SHA_Start(&handle, npcm_sha_type_sha2); + npcm_sha_check(status); + if (i == 2) { + for (j = 0; j < 10000; j++) { //not working + status = SHA_Update(&handle, sha2selftestbuff[i], sha2selftestbufflen[i]); + npcm_sha_check(status); + } + } else { + status = SHA_Update(&handle, sha2selftestbuff[i], sha2selftestbufflen[i]); + npcm_sha_check(status); + } + + status = SHA_Finish(&handle, hashdigest); + npcm_sha_check(status); + SHA_Power(false); + if (memcmp(hashdigest, sha2selftestexpres[i], SHA_2_HASH_LENGTH)) + return -1; + + npcm_sha_calc(npcm_sha_type_sha2, sha2selftestbuff[i], sha2selftestbufflen[i], hashdigest); + if (memcmp(hashdigest, sha2selftestexpres[i], SHA_2_HASH_LENGTH)) + return -1; + } + } + + return 0; +} + +/*----------------------------------------------------------------------------*/ +/* Function: SHA_FlushLocalBuffer_l */ +/* */ +/* Parameters: */ +/* Returns: none */ +/* Side effects: */ +/* Description: This routine flush secrun buffer to SHA module */ +/*----------------------------------------------------------------------------*/ +static void SHA_FlushLocalBuffer_l(const u32 *buff) +{ + struct npcm_sha_regs *regs = sha_priv->regs; + u32 i; + + for (i = 0; i < (SHA_BLOCK_LENGTH / sizeof(u32)); i++) + writel(buff[i], ®s->hash_data_in); +} + +/*----------------------------------------------------------------------------*/ +/* Function: SHA_BusyWait_l */ +/* */ +/* Parameters: */ +/* Returns: 0 if no error was found or DEFS_STATUS_ERROR otherwise */ +/* Side effects: */ +/* Description: This routine wait for SHA unit to no longer be busy */ +/*----------------------------------------------------------------------------*/ +static int SHA_BusyWait_l(void) +{ + struct npcm_sha_regs *regs = sha_priv->regs; + u32 timeout = SHA_TIMEOUT; + + do { + if (timeout-- == 0) + return -ETIMEDOUT; + } while ((readb(®s->hash_ctr_sts) & HASH_CTR_STS_SHA_BUSY) + == HASH_CTR_STS_SHA_BUSY); + + return 0; +} + +/*----------------------------------------------------------------------------*/ +/* Function: SHA_GetShaDigest_l */ +/* */ +/* Parameters: hashDigest - buffer for the hash output. */ +/* type - SHA module type */ +/* Returns: none */ +/* Side effects: */ +/* Description: This routine copy the hash digest from the hardware */ +/* and into given buffer (in ram) */ +/*----------------------------------------------------------------------------*/ +static void SHA_GetShaDigest_l(u8 *hashdigest, u8 type) +{ + struct npcm_sha_regs *regs = sha_priv->regs; + u16 j; + u8 len = SHA_HASH_LENGTH(type) / sizeof(u32); + + // Copy Bytes from SHA module to given buffer + for (j = 0; j < len; j++) + ((u32 *)hashdigest)[j] = readl(®s->hash_dig[j]); +} + +/*----------------------------------------------------------------------------*/ +/* Function: SHA_SetShaDigest_l */ +/* */ +/* Parameters: hashDigest - input buffer to set as hash digest */ +/* type - SHA module type */ +/* Returns: none */ +/* Side effects: */ +/* Description: This routine set the hash digest in the hardware from */ +/* a given buffer (in ram) */ +/*----------------------------------------------------------------------------*/ +static void SHA_SetShaDigest_l(const u32 *hashdigest, u8 type) +{ + struct npcm_sha_regs *regs = sha_priv->regs; + u16 j; + u8 len = SHA_HASH_LENGTH(type) / sizeof(u32); + + // Copy Bytes from given buffer to SHA module + for (j = 0; j < len; j++) + writel(hashdigest[j], ®s->hash_dig[j]); +} + +/*----------------------------------------------------------------------------*/ +/* Function: SHA_SetBlock_l */ +/* */ +/* Parameters: data - data to copy */ +/* len - size of data */ +/* position - byte offset into the block at which data */ +/* should be placed */ +/* block - block buffer */ +/* Returns: none */ +/* Side effects: */ +/* Description: This routine load bytes into block buffer */ +/*----------------------------------------------------------------------------*/ +static void SHA_SetBlock_l(const u8 *data, u32 len, u16 position, u32 *block) +{ + u8 *dest = (u8 *)block; + + memcpy(dest + position, data, len); +} + +/*----------------------------------------------------------------------------*/ +/* Function: SHA_SetBlock_l */ +/* */ +/* Parameters: */ +/* len - size of data */ +/* position - byte offset into the block at which data */ +/* should be placed */ +/* block - block buffer */ +/* Returns: none */ +/* Side effects: */ +/* Description: This routine load zero's into the block buffer */ +/*----------------------------------------------------------------------------*/ +static void SHA_ClearBlock_l(u16 len, u16 position, u32 *block) +{ + u8 *dest = (u8 *)block; + + memset(dest + position, 0, len); +} + +/*----------------------------------------------------------------------------*/ +/* Function: SHA_SetLength32_l */ +/* */ +/* Parameters: */ +/* handlePtr - SHA processing handle pointer */ +/* block - block buffer */ +/* Returns: none */ +/* Side effects: */ +/* Description: This routine set the length of the hash's data */ +/* len is the 32-bit byte length of the message */ +/*lint -efunc(734,SHA_SetLength32_l) Supperess loss of percision lint warning */ +/*----------------------------------------------------------------------------*/ +static void SHA_SetLength32_l(struct SHA_HANDLE_T *handleptr, u32 *block) +{ + u16 *secrunbufferswappedptr = (u16 *)(void *)(block); + + secrunbufferswappedptr[(SHA_BLOCK_LENGTH / sizeof(u16)) - 1] = (u16) + ((handleptr->length0 << 3) << 8) | ((u16)(handleptr->length0 << 3) >> 8); + secrunbufferswappedptr[(SHA_BLOCK_LENGTH / sizeof(u16)) - 2] = (u16) + ((handleptr->length0 >> (16 - 3)) >> 8) | ((u16)(handleptr->length0 >> (16 - 3)) << 8); + secrunbufferswappedptr[(SHA_BLOCK_LENGTH / sizeof(u16)) - 3] = (u16) + ((handleptr->length1 << 3) << 8) | ((u16)(handleptr->length1 << 3) >> 8); + secrunbufferswappedptr[(SHA_BLOCK_LENGTH / sizeof(u16)) - 4] = (u16) + ((handleptr->length1 >> (16 - 3)) >> 8) | ((u16)(handleptr->length1 >> (16 - 3)) << 8); +} + +static int npcm_sha_bind(struct udevice *dev) +{ + sha_priv = calloc(1, sizeof(struct npcm_sha_priv)); + if (!sha_priv) + return -ENOMEM; + + sha_priv->regs = dev_remap_addr_index(dev, 0); + if (!sha_priv->regs) { + printf("Cannot find sha reg address, binding failed\n"); + return -EINVAL; + } + + printf("SHA: NPCM SHA module bind OK\n"); + + return 0; +} + +static const struct udevice_id npcm_sha_ids[] = { + { .compatible = "nuvoton,npcm845-sha" }, + { .compatible = "nuvoton,npcm750-sha" }, + { } +}; + +U_BOOT_DRIVER(npcm_sha) = { + .name = "npcm_sha", + .id = UCLASS_MISC, + .of_match = npcm_sha_ids, + .priv_auto = sizeof(struct npcm_sha_priv), + .bind = npcm_sha_bind, +}; -- 2.7.4