From eda25c11b887ae952da2205ed1c8db751dbf4d11 Mon Sep 17 00:00:00 2001 From: Ye Li Date: Wed, 28 Sep 2022 15:49:02 +0530 Subject: [PATCH] crypto/fsl: fsl_rsa: Fix dcache issue in the driver issue: CAAM fails with key error when perform Modular Exponentiation using PKHA Block in CAAM Fix: add flush and invalidate dcache for keys, signature and output decrypted data processed by CAAM. Fixes: 34276478f7 (DM: crypto/fsl - Add Freescale rsa DM driver) Signed-off-by: Ye Li Reviewed-by: Gaurav Jain Acked-by: Peng Fan --- drivers/crypto/fsl/fsl_rsa.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/crypto/fsl/fsl_rsa.c b/drivers/crypto/fsl/fsl_rsa.c index 897ee855ea..335b7fe25a 100644 --- a/drivers/crypto/fsl/fsl_rsa.c +++ b/drivers/crypto/fsl/fsl_rsa.c @@ -6,6 +6,7 @@ #include #include +#include #include #include #include @@ -36,12 +37,21 @@ int fsl_mod_exp(struct udevice *dev, const uint8_t *sig, uint32_t sig_len, inline_cnstr_jobdesc_pkha_rsaexp(desc, &pkin, out, sig_len); + flush_dcache_range((ulong)sig, (ulong)sig + sig_len); + flush_dcache_range((ulong)prop->modulus, (ulong)(prop->modulus) + keylen); + flush_dcache_range((ulong)prop->public_exponent, + (ulong)(prop->public_exponent) + prop->exp_len); + flush_dcache_range((ulong)desc, (ulong)desc + (sizeof(uint32_t) * MAX_CAAM_DESCSIZE)); + flush_dcache_range((ulong)out, (ulong)out + sig_len); + ret = run_descriptor_jr(desc); if (ret) { debug("%s: RSA failed to verify: %d\n", __func__, ret); return -EFAULT; } + invalidate_dcache_range((ulong)out, (ulong)out + sig_len); + return 0; } -- 2.39.5