[PATCH v1 2/2] crypto: nuvoton: Add NPCM7xx SHA driver
Jim Liu
jim.t90615 at gmail.com
Tue Jun 7 10:32:09 CEST 2022
add nuvoton BMC npcm750 SHA driver
Signed-off-by: Jim Liu <JJLIU0 at nuvoton.com>
---
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 c4ab0674e5..034fcadfcc 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 5b2fb90314..5a1173dfe7 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 0000000000..7ebdfa16f4
--- /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 <common.h>
+#include <dm.h>
+#include <hash.h>
+#include <malloc.h>
+#include <uboot_aes.h>
+#include <asm/io.h>
+
+#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,
+};
--
2.17.1
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