arm: ls102xa: Update snoop settings for CCI-400

CAAM is connected to CCI-400 S0 slave interface. Disable snooping for
S0 will cause CAAM self test failure. This patch is to enable snooping
for S0 slave interface. These CCI-400 operations are moved to
board_early_init_f() to be initialized earlier. For S4 slave interface,
issuing of snoop requests and DVM message requests are enabled.

Signed-off-by: Alison Wang <alison.wang@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h

@@ -458,6 +458,8 @@ struct ccsr_ddr {
 #define CCI400_CTRLORD_TERM_BARRIER	0x00000008
 #define CCI400_CTRLORD_EN_BARRIER	0
 #define CCI400_SHAORD_NON_SHAREABLE	0x00000002
+#define CCI400_DVM_MESSAGE_REQ_EN	0x00000002
+#define CCI400_SNOOP_REQ_EN		0x00000001
 
 /* CCI-400 registers */
 struct ccsr_cci400 {

board/freescale/ls1021aqds/ls1021aqds.c

@@ -197,6 +197,20 @@ int board_early_init_f(void)
 	out_be32(&scfg->pixclkcr, SCFG_PIXCLKCR_PXCKEN);
 #endif
 
+	/*
+	 * Enable snoop requests and DVM message requests for
+	 * Slave insterface S4 (A7 core cluster)
+	 */
+	out_le32(&cci->slave[4].snoop_ctrl,
+		 CCI400_DVM_MESSAGE_REQ_EN | CCI400_SNOOP_REQ_EN);
+
+	/*
+	 * Set CCI-400 Slave interface S1, S2 Shareable Override Register
+	 * All transactions are treated as non-shareable
+	 */
+	out_le32(&cci->slave[1].sha_ord, CCI400_SHAORD_NON_SHAREABLE);
+	out_le32(&cci->slave[2].sha_ord, CCI400_SHAORD_NON_SHAREABLE);
+
 	/* Workaround for the issue that DDR could not respond to
 	 * barrier transaction which is generated by executing DSB/ISB
 	 * instruction. Set CCI-400 control override register to
@@ -508,13 +522,6 @@ int board_init(void)
 	/* Set CCI-400 control override register to
 	 * enable barrier transaction */
 	out_le32(&cci->ctrl_ord, CCI400_CTRLORD_EN_BARRIER);
-	/*
-	 * Set CCI-400 Slave interface S0, S1, S2 Shareable Override Register
-	 * All transactions are treated as non-shareable
-	 */
-	out_le32(&cci->slave[0].sha_ord, CCI400_SHAORD_NON_SHAREABLE);
-	out_le32(&cci->slave[1].sha_ord, CCI400_SHAORD_NON_SHAREABLE);
-	out_le32(&cci->slave[2].sha_ord, CCI400_SHAORD_NON_SHAREABLE);
 
 	select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT);
 

board/freescale/ls1021atwr/ls1021atwr.c

@@ -263,6 +263,7 @@ int config_serdes_mux(void)
 int board_early_init_f(void)
 {
 	struct ccsr_scfg *scfg = (struct ccsr_scfg *)CONFIG_SYS_FSL_SCFG_ADDR;
+	struct ccsr_cci400 *cci = (struct ccsr_cci400 *)CONFIG_SYS_CCI400_ADDR;
 
 #ifdef CONFIG_TSEC_ENET
 	out_be32(&scfg->etsecdmamcr, SCFG_ETSECDMAMCR_LE_BD_FR);
@@ -281,6 +282,20 @@ int board_early_init_f(void)
 	out_be32(&scfg->qspi_cfg, SCFG_QSPI_CLKSEL);
 #endif
 
+	/*
+	 * Enable snoop requests and DVM message requests for
+	 * Slave insterface S4 (A7 core cluster)
+	 */
+	out_le32(&cci->slave[4].snoop_ctrl,
+		 CCI400_DVM_MESSAGE_REQ_EN | CCI400_SNOOP_REQ_EN);
+
+	/*
+	 * Set CCI-400 Slave interface S1, S2 Shareable Override Register
+	 * All transactions are treated as non-shareable
+	 */
+	out_le32(&cci->slave[1].sha_ord, CCI400_SHAORD_NON_SHAREABLE);
+	out_le32(&cci->slave[2].sha_ord, CCI400_SHAORD_NON_SHAREABLE);
+
 	return 0;
 }
 
@@ -405,16 +420,6 @@ struct smmu_stream_id dev_stream_id[] = {
 
 int board_init(void)
 {
-	struct ccsr_cci400 *cci = (struct ccsr_cci400 *)CONFIG_SYS_CCI400_ADDR;
-
-	/*
-	 * Set CCI-400 Slave interface S0, S1, S2 Shareable Override Register
-	 * All transactions are treated as non-shareable
-	 */
-	out_le32(&cci->slave[0].sha_ord, CCI400_SHAORD_NON_SHAREABLE);
-	out_le32(&cci->slave[1].sha_ord, CCI400_SHAORD_NON_SHAREABLE);
-	out_le32(&cci->slave[2].sha_ord, CCI400_SHAORD_NON_SHAREABLE);
-
 #ifndef CONFIG_SYS_FSL_NO_SERDES
 	fsl_serdes_init();
 #ifndef CONFIG_QSPI_BOOT