diff options
Diffstat (limited to 'target/linux/sunxi/patches-4.9/0054-crypto-sun4i-ss_support_the_Security_System_PRNG.patch')
-rw-r--r-- | target/linux/sunxi/patches-4.9/0054-crypto-sun4i-ss_support_the_Security_System_PRNG.patch | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/target/linux/sunxi/patches-4.9/0054-crypto-sun4i-ss_support_the_Security_System_PRNG.patch b/target/linux/sunxi/patches-4.9/0054-crypto-sun4i-ss_support_the_Security_System_PRNG.patch deleted file mode 100644 index f2bac1fde0..0000000000 --- a/target/linux/sunxi/patches-4.9/0054-crypto-sun4i-ss_support_the_Security_System_PRNG.patch +++ /dev/null @@ -1,206 +0,0 @@ -From b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 Mon Sep 17 00:00:00 2001 -From: Corentin LABBE <clabbe.montjoie@gmail.com> -Date: Mon, 3 Jul 2017 20:48:48 +0200 -Subject: crypto: sun4i-ss - support the Security System PRNG - -The Security System has a PRNG, this patch adds support for it via -crypto_rng. - -Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com> -Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> ---- - drivers/crypto/Kconfig | 8 +++++ - drivers/crypto/sunxi-ss/Makefile | 1 + - drivers/crypto/sunxi-ss/sun4i-ss-core.c | 30 ++++++++++++++++++ - drivers/crypto/sunxi-ss/sun4i-ss-prng.c | 56 +++++++++++++++++++++++++++++++++ - drivers/crypto/sunxi-ss/sun4i-ss.h | 11 +++++++ - 5 files changed, 106 insertions(+) - create mode 100644 drivers/crypto/sunxi-ss/sun4i-ss-prng.c - ---- a/drivers/crypto/Kconfig -+++ b/drivers/crypto/Kconfig -@@ -538,6 +538,14 @@ config CRYPTO_DEV_SUN4I_SS - 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_ROCKCHIP - tristate "Rockchip's Cryptographic Engine driver" - depends on OF && ARCH_ROCKCHIP ---- a/drivers/crypto/sunxi-ss/Makefile -+++ b/drivers/crypto/sunxi-ss/Makefile -@@ -1,2 +1,3 @@ - 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 ---- a/drivers/crypto/sunxi-ss/sun4i-ss-core.c -+++ b/drivers/crypto/sunxi-ss/sun4i-ss-core.c -@@ -214,6 +214,23 @@ static struct sun4i_ss_alg_template ss_a - } - } - }, -+#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_probe(struct platform_device *pdev) -@@ -356,6 +373,13 @@ static int sun4i_ss_probe(struct platfor - goto error_alg; - } - break; -+ 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; - } - } - platform_set_drvdata(pdev, ss); -@@ -370,6 +394,9 @@ error_alg: - case CRYPTO_ALG_TYPE_AHASH: - crypto_unregister_ahash(&ss_algs[i].alg.hash); - break; -+ case CRYPTO_ALG_TYPE_RNG: -+ crypto_unregister_rng(&ss_algs[i].alg.rng); -+ break; - } - } - if (ss->reset) -@@ -394,6 +421,9 @@ static int sun4i_ss_remove(struct platfo - case CRYPTO_ALG_TYPE_AHASH: - crypto_unregister_ahash(&ss_algs[i].alg.hash); - break; -+ case CRYPTO_ALG_TYPE_RNG: -+ crypto_unregister_rng(&ss_algs[i].alg.rng); -+ break; - } - } - ---- /dev/null -+++ b/drivers/crypto/sunxi-ss/sun4i-ss-prng.c -@@ -0,0 +1,56 @@ -+#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; -+ 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; -+ -+ spin_lock(&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(&ss->slock); -+ return dlen; -+} ---- a/drivers/crypto/sunxi-ss/sun4i-ss.h -+++ b/drivers/crypto/sunxi-ss/sun4i-ss.h -@@ -30,6 +30,7 @@ - #include <crypto/aes.h> - #include <crypto/des.h> - #include <crypto/internal/rng.h> -+#include <crypto/rng.h> - - #define SS_CTL 0x00 - #define SS_KEY0 0x04 -@@ -125,6 +126,9 @@ - #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 sun4i_ss_ctx { - void __iomem *base; - int irq; -@@ -134,6 +138,9 @@ struct sun4i_ss_ctx { - struct device *dev; - struct resource *res; - 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 sun4i_ss_alg_template { -@@ -142,6 +149,7 @@ struct sun4i_ss_alg_template { - union { - struct crypto_alg crypto; - struct ahash_alg hash; -+ struct rng_alg rng; - } alg; - struct sun4i_ss_ctx *ss; - }; -@@ -199,3 +207,6 @@ int sun4i_ss_des_setkey(struct crypto_ab - unsigned int keylen); - int sun4i_ss_des3_setkey(struct crypto_ablkcipher *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); |