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Subject[PATCH 1/3] crypto: ccree: add support for CryptoCell 713
Date
Add support for Arm TrustZone CryptoCell 713.
Note that this patch just enables using a 713 in backwards compatible mode
to 712. Newer 713 specific features will follow.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
---
drivers/crypto/Kconfig | 2 +-
drivers/crypto/ccree/cc_driver.c | 23 +++++++++++++++--------
drivers/crypto/ccree/cc_driver.h | 5 +++--
3 files changed, 19 insertions(+), 11 deletions(-)

diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index a8c4ce0..bea4de6 100644
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -754,7 +754,7 @@ config CRYPTO_DEV_CCREE
help
Say 'Y' to enable a driver for the REE interface of the Arm
TrustZone CryptoCell family of processors. Currently the
- CryptoCell 712, 710 and 630 are supported.
+ CryptoCell 713, 712, 710 and 630 are supported.
Choose this if you wish to use hardware acceleration of
cryptographic operations on the system REE.
If unsure say Y.
diff --git a/drivers/crypto/ccree/cc_driver.c b/drivers/crypto/ccree/cc_driver.c
index 1ff229c..630c598 100644
--- a/drivers/crypto/ccree/cc_driver.c
+++ b/drivers/crypto/ccree/cc_driver.c
@@ -43,6 +43,10 @@ struct cc_hw_data {

/* Hardware revisions defs. */

+static const struct cc_hw_data cc713_hw = {
+ .name = "713", .rev = CC_HW_REV_713
+};
+
static const struct cc_hw_data cc712_hw = {
.name = "712", .rev = CC_HW_REV_712, .sig = 0xDCC71200U
};
@@ -56,6 +60,7 @@ static const struct cc_hw_data cc630p_hw = {
};

static const struct of_device_id arm_ccree_dev_of_match[] = {
+ { .compatible = "arm,cryptocell-713-ree", .data = &cc713_hw },
{ .compatible = "arm,cryptocell-712-ree", .data = &cc712_hw },
{ .compatible = "arm,cryptocell-710-ree", .data = &cc710_hw },
{ .compatible = "arm,cryptocell-630p-ree", .data = &cc630p_hw },
@@ -297,15 +302,17 @@ static int init_cc_resources(struct platform_device *plat_dev)
return rc;
}

- /* Verify correct mapping */
- signature_val = cc_ioread(new_drvdata, new_drvdata->sig_offset);
- if (signature_val != hw_rev->sig) {
- dev_err(dev, "Invalid CC signature: SIGNATURE=0x%08X != expected=0x%08X\n",
- signature_val, hw_rev->sig);
- rc = -EINVAL;
- goto post_clk_err;
+ if (hw_rev->rev <= CC_HW_REV_712) {
+ /* Verify correct mapping */
+ signature_val = cc_ioread(new_drvdata, new_drvdata->sig_offset);
+ if (signature_val != hw_rev->sig) {
+ dev_err(dev, "Invalid CC signature: SIGNATURE=0x%08X != expected=0x%08X\n",
+ signature_val, hw_rev->sig);
+ rc = -EINVAL;
+ goto post_clk_err;
+ }
+ dev_dbg(dev, "CC SIGNATURE=0x%08X\n", signature_val);
}
- dev_dbg(dev, "CC SIGNATURE=0x%08X\n", signature_val);

/* Display HW versions */
dev_info(dev, "ARM CryptoCell %s Driver: HW version 0x%08X, Driver version %s\n",
diff --git a/drivers/crypto/ccree/cc_driver.h b/drivers/crypto/ccree/cc_driver.h
index d608a4f..a06e5c9 100644
--- a/drivers/crypto/ccree/cc_driver.h
+++ b/drivers/crypto/ccree/cc_driver.h
@@ -36,12 +36,13 @@
extern bool cc_dump_desc;
extern bool cc_dump_bytes;

-#define DRV_MODULE_VERSION "4.0"
+#define DRV_MODULE_VERSION "5.0"

enum cc_hw_rev {
CC_HW_REV_630 = 630,
CC_HW_REV_710 = 710,
- CC_HW_REV_712 = 712
+ CC_HW_REV_712 = 712,
+ CC_HW_REV_713 = 713
};

#define CC_COHERENT_CACHE_PARAMS 0xEEE
--
2.7.4
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