CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
CONFIG_CRYPTO_DEV_SUN4I_SS=y
-CONFIG_CRYPTO_DEV_SUN4I_SS_PRNG=y
CONFIG_CRYPTO_DEV_SUN8I_CE=y
CONFIG_CRYPTO_DEV_SUN8I_SS=y
CONFIG_DMA_CMA=y
To compile this driver as a module, choose M here: the module
will be called sun4i-ss.
-config CRYPTO_DEV_SUN4I_SS_PRNG
- bool "Support for Allwinner Security System PRNG"
- depends on CRYPTO_DEV_SUN4I_SS
- select CRYPTO_RNG
- help
- Select this option if you want to provide kernel-side support for
- the Pseudo-Random Number Generator found in the Security System.
-
config CRYPTO_DEV_SUN4I_SS_DEBUG
bool "Enable sun4i-ss stats"
depends on CRYPTO_DEV_SUN4I_SS
# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_CRYPTO_DEV_SUN4I_SS) += sun4i-ss.o
sun4i-ss-y += sun4i-ss-core.o sun4i-ss-hash.o sun4i-ss-cipher.o
-sun4i-ss-$(CONFIG_CRYPTO_DEV_SUN4I_SS_PRNG) += sun4i-ss-prng.o
}
}
},
-#ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_PRNG
-{
- .type = CRYPTO_ALG_TYPE_RNG,
- .alg.rng = {
- .base = {
- .cra_name = "stdrng",
- .cra_driver_name = "sun4i_ss_rng",
- .cra_priority = 300,
- .cra_ctxsize = 0,
- .cra_module = THIS_MODULE,
- },
- .generate = sun4i_ss_prng_generate,
- .seed = sun4i_ss_prng_seed,
- .seedsize = SS_SEED_LEN / BITS_PER_BYTE,
- }
-},
-#endif
};
static int sun4i_ss_debugfs_show(struct seq_file *seq, void *v)
ss_algs[i].stat_req, ss_algs[i].stat_opti, ss_algs[i].stat_fb,
ss_algs[i].stat_bytes);
break;
-#ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_PRNG
- case CRYPTO_ALG_TYPE_RNG:
- seq_printf(seq, "%s %s reqs=%lu tsize=%lu\n",
- ss_algs[i].alg.rng.base.cra_driver_name,
- ss_algs[i].alg.rng.base.cra_name,
- ss_algs[i].stat_req, ss_algs[i].stat_bytes);
- break;
-#endif
case CRYPTO_ALG_TYPE_AHASH:
seq_printf(seq, "%s %s reqs=%lu\n",
ss_algs[i].alg.hash.halg.base.cra_driver_name,
goto error_alg;
}
break;
-#ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_PRNG
- case CRYPTO_ALG_TYPE_RNG:
- err = crypto_register_rng(&ss_algs[i].alg.rng);
- if (err) {
- dev_err(ss->dev, "Fail to register %s\n",
- ss_algs[i].alg.rng.base.cra_name);
- }
- break;
-#endif
}
}
case CRYPTO_ALG_TYPE_AHASH:
crypto_unregister_ahash(&ss_algs[i].alg.hash);
break;
-#ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_PRNG
- case CRYPTO_ALG_TYPE_RNG:
- crypto_unregister_rng(&ss_algs[i].alg.rng);
- break;
-#endif
}
}
error_pm:
case CRYPTO_ALG_TYPE_AHASH:
crypto_unregister_ahash(&ss_algs[i].alg.hash);
break;
-#ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_PRNG
- case CRYPTO_ALG_TYPE_RNG:
- crypto_unregister_rng(&ss_algs[i].alg.rng);
- break;
-#endif
}
}
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-#include "sun4i-ss.h"
-
-int sun4i_ss_prng_seed(struct crypto_rng *tfm, const u8 *seed,
- unsigned int slen)
-{
- struct sun4i_ss_alg_template *algt;
- struct rng_alg *alg = crypto_rng_alg(tfm);
-
- algt = container_of(alg, struct sun4i_ss_alg_template, alg.rng);
- memcpy(algt->ss->seed, seed, slen);
-
- return 0;
-}
-
-int sun4i_ss_prng_generate(struct crypto_rng *tfm, const u8 *src,
- unsigned int slen, u8 *dst, unsigned int dlen)
-{
- struct sun4i_ss_alg_template *algt;
- struct rng_alg *alg = crypto_rng_alg(tfm);
- int i, err;
- u32 v;
- u32 *data = (u32 *)dst;
- const u32 mode = SS_OP_PRNG | SS_PRNG_CONTINUE | SS_ENABLED;
- size_t len;
- struct sun4i_ss_ctx *ss;
- unsigned int todo = (dlen / 4) * 4;
-
- algt = container_of(alg, struct sun4i_ss_alg_template, alg.rng);
- ss = algt->ss;
-
- err = pm_runtime_resume_and_get(ss->dev);
- if (err < 0)
- return err;
-
- if (IS_ENABLED(CONFIG_CRYPTO_DEV_SUN4I_SS_DEBUG)) {
- algt->stat_req++;
- algt->stat_bytes += todo;
- }
-
- spin_lock_bh(&ss->slock);
-
- writel(mode, ss->base + SS_CTL);
-
- while (todo > 0) {
- /* write the seed */
- for (i = 0; i < SS_SEED_LEN / BITS_PER_LONG; i++)
- writel(ss->seed[i], ss->base + SS_KEY0 + i * 4);
-
- /* Read the random data */
- len = min_t(size_t, SS_DATA_LEN / BITS_PER_BYTE, todo);
- readsl(ss->base + SS_TXFIFO, data, len / 4);
- data += len / 4;
- todo -= len;
-
- /* Update the seed */
- for (i = 0; i < SS_SEED_LEN / BITS_PER_LONG; i++) {
- v = readl(ss->base + SS_KEY0 + i * 4);
- ss->seed[i] = v;
- }
- }
-
- writel(0, ss->base + SS_CTL);
- spin_unlock_bh(&ss->slock);
-
- pm_runtime_put(ss->dev);
-
- return 0;
-}
#include <crypto/internal/skcipher.h>
#include <crypto/aes.h>
#include <crypto/internal/des.h>
-#include <crypto/internal/rng.h>
-#include <crypto/rng.h>
#define SS_CTL 0x00
#define SS_KEY0 0x04
/* SS_CTL configuration values */
-/* PRNG generator mode - bit 15 */
-#define SS_PRNG_ONESHOT (0 << 15)
-#define SS_PRNG_CONTINUE (1 << 15)
-
/* IV mode for hash */
#define SS_IV_ARBITRARY (1 << 14)
#define SS_OP_3DES (2 << 4)
#define SS_OP_SHA1 (3 << 4)
#define SS_OP_MD5 (4 << 4)
-#define SS_OP_PRNG (5 << 4)
/* Data end bit - bit 2 */
#define SS_DATA_END (1 << 2)
-/* PRNG start bit - bit 1 */
-#define SS_PRNG_START (1 << 1)
-
/* SS Enable bit - bit 0 */
#define SS_DISABLED (0 << 0)
#define SS_ENABLED (1 << 0)
#define SS_RXFIFO_EMP_INT_ENABLE (1 << 2)
#define SS_TXFIFO_AVA_INT_ENABLE (1 << 0)
-#define SS_SEED_LEN 192
-#define SS_DATA_LEN 160
-
/*
* struct ss_variant - Describe SS hardware variant
* @sha1_in_be: The SHA1 digest is given by SS in BE, and so need to be inverted.
char buf[4 * SS_RX_MAX];/* buffer for linearize SG src */
char bufo[4 * SS_TX_MAX]; /* buffer for linearize SG dst */
spinlock_t slock; /* control the use of the device */
-#ifdef CONFIG_CRYPTO_DEV_SUN4I_SS_PRNG
- u32 seed[SS_SEED_LEN / BITS_PER_LONG];
-#endif
struct dentry *dbgfs_dir;
struct dentry *dbgfs_stats;
};
union {
struct skcipher_alg crypto;
struct ahash_alg hash;
- struct rng_alg rng;
} alg;
struct sun4i_ss_ctx *ss;
unsigned long stat_req;
unsigned int keylen);
int sun4i_ss_des3_setkey(struct crypto_skcipher *tfm, const u8 *key,
unsigned int keylen);
-int sun4i_ss_prng_generate(struct crypto_rng *tfm, const u8 *src,
- unsigned int slen, u8 *dst, unsigned int dlen);
-int sun4i_ss_prng_seed(struct crypto_rng *tfm, const u8 *seed, unsigned int slen);
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