arm: ls102xa: enable snooping for CAAM transactions

Enable snooping for CAAM read & write transactions by
programming the SCFG snoop configuration register:
SCFG_SNPCNFGCR[SECRDSNP]
SCFG_SNPCNFGCR[SECWRSNP]

Signed-off-by: Horia Geantă <horia.geanta@freescale.com>
Reviewed-by: Zhengxiong Jin <Jason.Jin@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

diff --git a/arch/arm/cpu/armv7/ls102xa/cpu.c b/arch/arm/cpu/armv7/ls102xa/cpu.c
index e2eb5f3..df2e1b7 100644 (file)
--- a/arch/arm/cpu/armv7/ls102xa/cpu.c
+++ b/arch/arm/cpu/armv7/ls102xa/cpu.c
@@ -301,6 +301,7 @@ int arch_cpu_init(void)
        void *epu_base = (void *)(CONFIG_SYS_DCSRBAR + EPU_BLOCK_OFFSET);
        void *rcpm2_base =
                (void *)(CONFIG_SYS_DCSRBAR + DCSR_RCPM2_BLOCK_OFFSET);
+       struct ccsr_scfg *scfg = (void *)CONFIG_SYS_FSL_SCFG_ADDR;
        u32 state;
 
        /*
@@ -328,6 +329,8 @@ int arch_cpu_init(void)
         */
        fsl_epu_clean(epu_base);
 
+       setbits_be32(&scfg->snpcnfgcr, SCFG_SNPCNFGCR_SEC_RD_WR);
+
        return 0;
 }
 

diff --git a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
index 60aa0d3..fbd06ba 100644 (file)
--- a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
+++ b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
@@ -144,6 +144,7 @@ struct ccsr_gur {
 };
 
 #define SCFG_ETSECDMAMCR_LE_BD_FR      0x00000c00
+#define SCFG_SNPCNFGCR_SEC_RD_WR       0xc0000000
 #define SCFG_ETSECCMCR_GE2_CLK125      0x04000000
 #define SCFG_ETSECCMCR_GE0_CLK125      0x00000000
 #define SCFG_ETSECCMCR_GE1_CLK125      0x08000000