diff options
Diffstat (limited to 'qemu/roms/u-boot/drivers/crypto/ace_sha.c')
| -rw-r--r-- | qemu/roms/u-boot/drivers/crypto/ace_sha.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/qemu/roms/u-boot/drivers/crypto/ace_sha.c b/qemu/roms/u-boot/drivers/crypto/ace_sha.c deleted file mode 100644 index ed4f54182..000000000 --- a/qemu/roms/u-boot/drivers/crypto/ace_sha.c +++ /dev/null @@ -1,184 +0,0 @@ -/* - * Advanced Crypto Engine - SHA Firmware - * Copyright (c) 2012 Samsung Electronics - * - * SPDX-License-Identifier: GPL-2.0+ - */ -#include <common.h> -#include "ace_sha.h" - -#ifdef CONFIG_SHA_HW_ACCEL -#include <sha256.h> -#include <sha1.h> -#include <asm/errno.h> - -/* SHA1 value for the message of zero length */ -static const unsigned char sha1_digest_emptymsg[SHA1_SUM_LEN] = { - 0xDA, 0x39, 0xA3, 0xEE, 0x5E, 0x6B, 0x4B, 0x0D, - 0x32, 0x55, 0xBF, 0xFF, 0x95, 0x60, 0x18, 0x90, - 0xAF, 0xD8, 0x07, 0x09}; - -/* SHA256 value for the message of zero length */ -static const unsigned char sha256_digest_emptymsg[SHA256_SUM_LEN] = { - 0xE3, 0xB0, 0xC4, 0x42, 0x98, 0xFC, 0x1C, 0x14, - 0x9A, 0xFB, 0xF4, 0xC8, 0x99, 0x6F, 0xB9, 0x24, - 0x27, 0xAE, 0x41, 0xE4, 0x64, 0x9B, 0x93, 0x4C, - 0xA4, 0x95, 0x99, 0x1B, 0x78, 0x52, 0xB8, 0x55}; - -int ace_sha_hash_digest(const unsigned char *pbuf, unsigned int buf_len, - unsigned char *pout, unsigned int hash_type) -{ - unsigned int i, reg, len; - unsigned int *pdigest; - struct exynos_ace_sfr *ace_sha_reg = - (struct exynos_ace_sfr *)samsung_get_base_ace_sfr(); - - if (buf_len == 0) { - /* ACE H/W cannot compute hash value for empty string */ - if (hash_type == ACE_SHA_TYPE_SHA1) - memcpy(pout, sha1_digest_emptymsg, SHA1_SUM_LEN); - else - memcpy(pout, sha256_digest_emptymsg, SHA256_SUM_LEN); - return 0; - } - - /* Flush HRDMA */ - writel(ACE_FC_HRDMACFLUSH_ON, &ace_sha_reg->fc_hrdmac); - writel(ACE_FC_HRDMACFLUSH_OFF, &ace_sha_reg->fc_hrdmac); - - /* Set byte swap of data in */ - writel(ACE_HASH_SWAPDI_ON | ACE_HASH_SWAPDO_ON | ACE_HASH_SWAPIV_ON, - &ace_sha_reg->hash_byteswap); - - /* Select Hash input mux as external source */ - reg = readl(&ace_sha_reg->fc_fifoctrl); - reg = (reg & ~ACE_FC_SELHASH_MASK) | ACE_FC_SELHASH_EXOUT; - writel(reg, &ace_sha_reg->fc_fifoctrl); - - /* Set Hash as SHA1 or SHA256 and start Hash engine */ - reg = (hash_type == ACE_SHA_TYPE_SHA1) ? - ACE_HASH_ENGSEL_SHA1HASH : ACE_HASH_ENGSEL_SHA256HASH; - reg |= ACE_HASH_STARTBIT_ON; - writel(reg, &ace_sha_reg->hash_control); - - /* Enable FIFO mode */ - writel(ACE_HASH_FIFO_ON, &ace_sha_reg->hash_fifo_mode); - - /* Set message length */ - writel(buf_len, &ace_sha_reg->hash_msgsize_low); - writel(0, &ace_sha_reg->hash_msgsize_high); - - /* Set HRDMA */ - writel((unsigned int)pbuf, &ace_sha_reg->fc_hrdmas); - writel(buf_len, &ace_sha_reg->fc_hrdmal); - - while ((readl(&ace_sha_reg->hash_status) & ACE_HASH_MSGDONE_MASK) == - ACE_HASH_MSGDONE_OFF) { - /* - * PRNG error bit goes HIGH if a PRNG request occurs without - * a complete seed setup. We are using this bit to check h/w - * fault because proper setup is not expected in that case. - */ - if ((readl(&ace_sha_reg->hash_status) - & ACE_HASH_PRNGERROR_MASK) == ACE_HASH_PRNGERROR_ON) - return -EBUSY; - } - - /* Clear MSG_DONE bit */ - writel(ACE_HASH_MSGDONE_ON, &ace_sha_reg->hash_status); - - /* Read hash result */ - pdigest = (unsigned int *)pout; - len = (hash_type == ACE_SHA_TYPE_SHA1) ? SHA1_SUM_LEN : SHA256_SUM_LEN; - - for (i = 0; i < len / 4; i++) - pdigest[i] = readl(&ace_sha_reg->hash_result[i]); - - /* Clear HRDMA pending bit */ - writel(ACE_FC_HRDMA, &ace_sha_reg->fc_intpend); - - return 0; -} - -void hw_sha256(const unsigned char *pbuf, unsigned int buf_len, - unsigned char *pout, unsigned int chunk_size) -{ - if (ace_sha_hash_digest(pbuf, buf_len, pout, ACE_SHA_TYPE_SHA256)) - debug("ACE was not setup properly or it is faulty\n"); -} - -void hw_sha1(const unsigned char *pbuf, unsigned int buf_len, - unsigned char *pout, unsigned int chunk_size) -{ - if (ace_sha_hash_digest(pbuf, buf_len, pout, ACE_SHA_TYPE_SHA1)) - debug("ACE was not setup properly or it is faulty\n"); -} -#endif /* CONFIG_SHA_HW_ACCEL */ - -#ifdef CONFIG_LIB_HW_RAND -static unsigned int seed_done; - -void srand(unsigned int seed) -{ - struct exynos_ace_sfr *reg = - (struct exynos_ace_sfr *)samsung_get_base_ace_sfr(); - int i, status; - - /* Seed data */ - for (i = 0; i < ACE_HASH_PRNG_REG_NUM; i++) - writel(seed << i, ®->hash_seed[i]); - - /* Wait for seed setup done */ - while (1) { - status = readl(®->hash_status); - if ((status & ACE_HASH_SEEDSETTING_MASK) || - (status & ACE_HASH_PRNGERROR_MASK)) - break; - } - - seed_done = 1; -} - -unsigned int rand(void) -{ - struct exynos_ace_sfr *reg = - (struct exynos_ace_sfr *)samsung_get_base_ace_sfr(); - int i, status; - unsigned int seed = (unsigned int)&status; - unsigned int ret = 0; - - if (!seed_done) - srand(seed); - - /* Start PRNG */ - writel(ACE_HASH_ENGSEL_PRNG | ACE_HASH_STARTBIT_ON, ®->hash_control); - - /* Wait for PRNG done */ - while (1) { - status = readl(®->hash_status); - if (status & ACE_HASH_PRNGDONE_MASK) - break; - if (status & ACE_HASH_PRNGERROR_MASK) { - seed_done = 0; - return 0; - } - } - - /* Clear Done IRQ */ - writel(ACE_HASH_PRNGDONE_MASK, ®->hash_status); - - /* Read a PRNG result */ - for (i = 0; i < ACE_HASH_PRNG_REG_NUM; i++) - ret += readl(®->hash_prng[i]); - - seed_done = 0; - return ret; -} - -unsigned int rand_r(unsigned int *seedp) -{ - srand(*seedp); - - return rand(); -} -#endif /* CONFIG_LIB_HW_RAND */ |