[U-Boot] [PATCH 2/5][v5] armv8: Make SEC read/write as snoopable for LS1043

Aneesh Bansal
2015-12-08T08:24:27Z

For LS1043, SEC read/writes are made snoopable by setting
the corresponding bits in SCFG to avoid coherency issues.

Signed-off-by: Aneesh Bansal <aneesh.bansal@freescale.com>
---
Changes in v5: None

Changes in v4: None

Changes in v3: None

Changes in v2:
New Patch set created with an additional patch
Commit Subject modified

arch/arm/cpu/armv8/fsl-layerscape/soc.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/arch/arm/cpu/armv8/fsl-layerscape/soc.c b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
index 8896b70..85d8df8 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/soc.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
@@ -124,11 +124,16 @@ void fsl_lsch3_early_init_f(void)
void fsl_lsch2_early_init_f(void)
{
struct ccsr_cci400 *cci = (struct ccsr_cci400 *)CONFIG_SYS_CCI400_ADDR;
+ struct ccsr_scfg *scfg = (struct ccsr_scfg *)CONFIG_SYS_FSL_SCFG_ADDR;

#ifdef CONFIG_FSL_IFC
init_early_memctl_regs(); /* tighten IFC timing */
#endif

+ /* Make SEC reads and writes snoopable */
+ setbits_be32(&scfg->snpcnfgcr, SCFG_SNPCNFGCR_SECRDSNP |
+ SCFG_SNPCNFGCR_SECWRSNP);
+
/*
* Enable snoop requests and DVM message requests for
* Slave insterface S4 (A53 core cluster)
--
1.8.1.4