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| author | horia.geanta@freescale.com <horia.geanta@freescale.com> | 2015-07-08 17:24:57 +0300 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2015-08-03 12:06:38 -0700 |
| commit | 3ef2412de6680c751abd39047cadff7e052a0f51 (patch) | |
| tree | 0e25ca7f4a28f881a041c445739c21b24e7fbf34 /drivers/crypto | |
| parent | e5d08b4d601d4060609b162f437327c823b00947 (diff) | |
| download | talos-obmc-uboot-3ef2412de6680c751abd39047cadff7e052a0f51.tar.gz talos-obmc-uboot-3ef2412de6680c751abd39047cadff7e052a0f51.zip | |
drivers/crypto/fsl: fix snooping for write transactions
HW coherency won't work properly for CAAM write transactions
if AWCACHE is left to default (POR) value - 4'b0001.
It has to be programmed to 4'b0010.
For platforms that have HW coherency support:
-PPC-based: the update has no effect; CAAM coherency already works
due to the IOMMU (PAMU) driver setting the correct memory coherency
attributes
-ARM-based: the update fixes cache coherency issues,
since IOMMU (SMMU) driver is not programmed to behave similar to PAMU
Fixes: b9eebfade974c ("fsl_sec: Add hardware accelerated SHA256 and SHA1")
Signed-off-by: Horia Geantă <horia.geanta@freescale.com>
Reviewed-by: Aneesh Bansal <aneesh.bansal@freescale.com>
Reviewed-by: Mingkai Hu <Mingkai.Hu@freescale.com>
Acked-by: Ruchika Gupta<ruchika.gupta@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/fsl/jr.c | 10 | ||||
| -rw-r--r-- | drivers/crypto/fsl/jr.h | 2 |
2 files changed, 8 insertions, 4 deletions
diff --git a/drivers/crypto/fsl/jr.c b/drivers/crypto/fsl/jr.c index 35606688af..17392c9813 100644 --- a/drivers/crypto/fsl/jr.c +++ b/drivers/crypto/fsl/jr.c @@ -468,14 +468,16 @@ static int rng_init(void) int sec_init(void) { - int ret = 0; - -#ifdef CONFIG_PHYS_64BIT ccsr_sec_t *sec = (void *)CONFIG_SYS_FSL_SEC_ADDR; uint32_t mcr = sec_in32(&sec->mcfgr); + int ret = 0; - sec_out32(&sec->mcfgr, mcr | 1 << MCFGR_PS_SHIFT); + mcr = (mcr & ~MCFGR_AWCACHE_MASK) | (0x2 << MCFGR_AWCACHE_SHIFT); +#ifdef CONFIG_PHYS_64BIT + mcr |= (1 << MCFGR_PS_SHIFT); #endif + sec_out32(&sec->mcfgr, mcr); + ret = jr_init(); if (ret < 0) { printf("SEC initialization failed\n"); diff --git a/drivers/crypto/fsl/jr.h b/drivers/crypto/fsl/jr.h index cce2c589ce..1526060088 100644 --- a/drivers/crypto/fsl/jr.h +++ b/drivers/crypto/fsl/jr.h @@ -21,6 +21,8 @@ #define MCFGR_SWRST ((uint32_t)(1)<<31) /* Software Reset */ #define MCFGR_DMA_RST ((uint32_t)(1)<<28) /* DMA Reset */ #define MCFGR_PS_SHIFT 16 +#define MCFGR_AWCACHE_SHIFT 8 +#define MCFGR_AWCACHE_MASK (0xf << MCFGR_AWCACHE_SHIFT) #define JR_INTMASK 0x00000001 #define JRCR_RESET 0x01 #define JRINT_ERR_HALT_INPROGRESS 0x4 |
