diff options
| author | Gilad Ben-Yossef <gilad@benyossef.com> | 2019-06-17 11:46:30 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-06-27 09:28:00 +0300 |
| commit | 303f99ac9470a92c06fec1dfb5f263fbc26eb8f4 (patch) | |
| tree | 702a2d4cd45f10dd3af987d6bf15c7258613e806 /drivers/crypto/ccree/cc_driver.c | |
| parent | 3db617e77ae2f8051fd6f5d3fff0e15f086d5b4c (diff) | |
| download | linux-303f99ac9470a92c06fec1dfb5f263fbc26eb8f4.tar.xz | |
crypto: ccree - add HW engine config check
Add check to verify the stated device tree HW configuration
matches the HW.
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/ccree/cc_driver.c')
| -rw-r--r-- | drivers/crypto/ccree/cc_driver.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/crypto/ccree/cc_driver.c b/drivers/crypto/ccree/cc_driver.c index 667bc73d7a00..980aa04b655b 100644 --- a/drivers/crypto/ccree/cc_driver.c +++ b/drivers/crypto/ccree/cc_driver.c @@ -408,6 +408,24 @@ static int init_cc_resources(struct platform_device *plat_dev) } sig_cidr = val; + /* Check HW engine configuration */ + val = cc_ioread(new_drvdata, CC_REG(HOST_REMOVE_INPUT_PINS)); + switch (val) { + case CC_PINS_FULL: + /* This is fine */ + break; + case CC_PINS_SLIM: + if (new_drvdata->std_bodies & CC_STD_NIST) { + dev_warn(dev, "703 mode forced due to HW configuration.\n"); + new_drvdata->std_bodies = CC_STD_OSCCA; + } + break; + default: + dev_err(dev, "Unsupported engines configration.\n"); + rc = -EINVAL; + goto post_clk_err; + } + /* Check security disable state */ val = cc_ioread(new_drvdata, CC_REG(SECURITY_DISABLED)); val &= CC_SECURITY_DISABLED_MASK; |