diff options
Diffstat (limited to 'target/linux/apm821xx/patches-4.19/023-0006-crypto-crypto4xx-add-prng-crypto-support.patch')
| -rw-r--r-- | target/linux/apm821xx/patches-4.19/023-0006-crypto-crypto4xx-add-prng-crypto-support.patch | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/target/linux/apm821xx/patches-4.19/023-0006-crypto-crypto4xx-add-prng-crypto-support.patch b/target/linux/apm821xx/patches-4.19/023-0006-crypto-crypto4xx-add-prng-crypto-support.patch deleted file mode 100644 index cf7f92c2d0..0000000000 --- a/target/linux/apm821xx/patches-4.19/023-0006-crypto-crypto4xx-add-prng-crypto-support.patch +++ /dev/null @@ -1,199 +0,0 @@ -From d072bfa4885354fff86aa1fb1dbc4f1533c9e0bf Mon Sep 17 00:00:00 2001 -From: Christian Lamparter <chunkeey@gmail.com> -Date: Sun, 23 Dec 2018 02:16:13 +0100 -Subject: [PATCH 06/15] crypto: crypto4xx - add prng crypto support - -This patch adds support for crypto4xx's ANSI X9.17 Annex C compliant -pseudo random number generator which provides a pseudo random source -for the purpose of generating Initialization Vectors (IV's) for AES -algorithms to the Packet Engine and other pseudo random number -requirements. - -Signed-off-by: Christian Lamparter <chunkeey@gmail.com> -Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> ---- - drivers/crypto/amcc/crypto4xx_core.c | 87 +++++++++++++++++++++++++ - drivers/crypto/amcc/crypto4xx_core.h | 4 ++ - drivers/crypto/amcc/crypto4xx_reg_def.h | 1 + - 3 files changed, 92 insertions(+) - ---- a/drivers/crypto/amcc/crypto4xx_core.c -+++ b/drivers/crypto/amcc/crypto4xx_core.c -@@ -40,9 +40,11 @@ - #include <crypto/ctr.h> - #include <crypto/gcm.h> - #include <crypto/sha.h> -+#include <crypto/rng.h> - #include <crypto/scatterwalk.h> - #include <crypto/skcipher.h> - #include <crypto/internal/aead.h> -+#include <crypto/internal/rng.h> - #include <crypto/internal/skcipher.h> - #include "crypto4xx_reg_def.h" - #include "crypto4xx_core.h" -@@ -1042,6 +1044,10 @@ static int crypto4xx_register_alg(struct - rc = crypto_register_ahash(&alg->alg.u.hash); - break; - -+ case CRYPTO_ALG_TYPE_RNG: -+ rc = crypto_register_rng(&alg->alg.u.rng); -+ break; -+ - default: - rc = crypto_register_skcipher(&alg->alg.u.cipher); - break; -@@ -1071,6 +1077,10 @@ static void crypto4xx_unregister_alg(str - crypto_unregister_aead(&alg->alg.u.aead); - break; - -+ case CRYPTO_ALG_TYPE_RNG: -+ crypto_unregister_rng(&alg->alg.u.rng); -+ break; -+ - default: - crypto_unregister_skcipher(&alg->alg.u.cipher); - } -@@ -1129,6 +1139,69 @@ static irqreturn_t crypto4xx_ce_interrup - PPC4XX_TMO_ERR_INT); - } - -+static int ppc4xx_prng_data_read(struct crypto4xx_device *dev, -+ u8 *data, unsigned int max) -+{ -+ unsigned int i, curr = 0; -+ u32 val[2]; -+ -+ do { -+ /* trigger PRN generation */ -+ writel(PPC4XX_PRNG_CTRL_AUTO_EN, -+ dev->ce_base + CRYPTO4XX_PRNG_CTRL); -+ -+ for (i = 0; i < 1024; i++) { -+ /* usually 19 iterations are enough */ -+ if ((readl(dev->ce_base + CRYPTO4XX_PRNG_STAT) & -+ CRYPTO4XX_PRNG_STAT_BUSY)) -+ continue; -+ -+ val[0] = readl_be(dev->ce_base + CRYPTO4XX_PRNG_RES_0); -+ val[1] = readl_be(dev->ce_base + CRYPTO4XX_PRNG_RES_1); -+ break; -+ } -+ if (i == 1024) -+ return -ETIMEDOUT; -+ -+ if ((max - curr) >= 8) { -+ memcpy(data, &val, 8); -+ data += 8; -+ curr += 8; -+ } else { -+ /* copy only remaining bytes */ -+ memcpy(data, &val, max - curr); -+ break; -+ } -+ } while (curr < max); -+ -+ return curr; -+} -+ -+static int crypto4xx_prng_generate(struct crypto_rng *tfm, -+ const u8 *src, unsigned int slen, -+ u8 *dstn, unsigned int dlen) -+{ -+ struct rng_alg *alg = crypto_rng_alg(tfm); -+ struct crypto4xx_alg *amcc_alg; -+ struct crypto4xx_device *dev; -+ int ret; -+ -+ amcc_alg = container_of(alg, struct crypto4xx_alg, alg.u.rng); -+ dev = amcc_alg->dev; -+ -+ mutex_lock(&dev->core_dev->rng_lock); -+ ret = ppc4xx_prng_data_read(dev, dstn, dlen); -+ mutex_unlock(&dev->core_dev->rng_lock); -+ return ret; -+} -+ -+ -+static int crypto4xx_prng_seed(struct crypto_rng *tfm, const u8 *seed, -+ unsigned int slen) -+{ -+ return 0; -+} -+ - /** - * Supported Crypto Algorithms - */ -@@ -1298,6 +1371,18 @@ static struct crypto4xx_alg_common crypt - .cra_module = THIS_MODULE, - }, - } }, -+ { .type = CRYPTO_ALG_TYPE_RNG, .u.rng = { -+ .base = { -+ .cra_name = "stdrng", -+ .cra_driver_name = "crypto4xx_rng", -+ .cra_priority = 300, -+ .cra_ctxsize = 0, -+ .cra_module = THIS_MODULE, -+ }, -+ .generate = crypto4xx_prng_generate, -+ .seed = crypto4xx_prng_seed, -+ .seedsize = 0, -+ } }, - }; - - /** -@@ -1367,6 +1452,7 @@ static int crypto4xx_probe(struct platfo - core_dev->dev->core_dev = core_dev; - core_dev->dev->is_revb = is_revb; - core_dev->device = dev; -+ mutex_init(&core_dev->rng_lock); - spin_lock_init(&core_dev->lock); - INIT_LIST_HEAD(&core_dev->dev->alg_list); - ratelimit_default_init(&core_dev->dev->aead_ratelimit); -@@ -1446,6 +1532,7 @@ static int crypto4xx_remove(struct platf - tasklet_kill(&core_dev->tasklet); - /* Un-register with Linux CryptoAPI */ - crypto4xx_unregister_alg(core_dev->dev); -+ mutex_destroy(&core_dev->rng_lock); - /* Free all allocated memory */ - crypto4xx_stop_all(core_dev); - ---- a/drivers/crypto/amcc/crypto4xx_core.h -+++ b/drivers/crypto/amcc/crypto4xx_core.h -@@ -23,8 +23,10 @@ - #define __CRYPTO4XX_CORE_H__ - - #include <linux/ratelimit.h> -+#include <linux/mutex.h> - #include <crypto/internal/hash.h> - #include <crypto/internal/aead.h> -+#include <crypto/internal/rng.h> - #include <crypto/internal/skcipher.h> - #include "crypto4xx_reg_def.h" - #include "crypto4xx_sa.h" -@@ -119,6 +121,7 @@ struct crypto4xx_core_device { - u32 irq; - struct tasklet_struct tasklet; - spinlock_t lock; -+ struct mutex rng_lock; - }; - - struct crypto4xx_ctx { -@@ -143,6 +146,7 @@ struct crypto4xx_alg_common { - struct skcipher_alg cipher; - struct ahash_alg hash; - struct aead_alg aead; -+ struct rng_alg rng; - } u; - }; - ---- a/drivers/crypto/amcc/crypto4xx_reg_def.h -+++ b/drivers/crypto/amcc/crypto4xx_reg_def.h -@@ -100,6 +100,7 @@ - #define CRYPTO4XX_ENDIAN_CFG 0x000600d8 - - #define CRYPTO4XX_PRNG_STAT 0x00070000 -+#define CRYPTO4XX_PRNG_STAT_BUSY 0x1 - #define CRYPTO4XX_PRNG_CTRL 0x00070004 - #define CRYPTO4XX_PRNG_SEED_L 0x00070008 - #define CRYPTO4XX_PRNG_SEED_H 0x0007000c |