[U-Boot] [PATCH 1/4] Add snoop disable for slave port 0, port 1 and port 2

[Alison Wang]

From: Jason Jin <Jason.Jin at freescale.com>

Disable the snoop for slave interface 0, 1 and 2
to avoid the interleaving on the CCI400 BUS.

Signed-off-by: Jason Jin <Jason.Jin at freescale.com>
Signed-off-by: Minghuan Lian <Minghuan.Lian at freescale.com>
---
 arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h |  1 +
 board/freescale/ls1021aqds/ls1021aqds.c           |  7 +++++++
 board/freescale/ls1021atwr/ls1021atwr.c           | 10 ++++++++++
 3 files changed, 18 insertions(+)

diff --git a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
index 7995fe2..a1f4fdb 100644
--- a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
+++ b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
@@ -448,6 +448,7 @@ struct ccsr_ddr {
 
 #define CCI400_CTRLORD_TERM_BARRIER	0x00000008
 #define CCI400_CTRLORD_EN_BARRIER	0
+#define CCI400_SHAORD_NON_SHAREABLE	0x00000002
 
 /* CCI-400 registers */
 struct ccsr_cci400 {
diff --git a/board/freescale/ls1021aqds/ls1021aqds.c b/board/freescale/ls1021aqds/ls1021aqds.c
index 12e83f7..e32dbeb 100644
--- a/board/freescale/ls1021aqds/ls1021aqds.c
+++ b/board/freescale/ls1021aqds/ls1021aqds.c
@@ -220,6 +220,13 @@ 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);
 
diff --git a/board/freescale/ls1021atwr/ls1021atwr.c b/board/freescale/ls1021atwr/ls1021atwr.c
index b522ff2..811c911 100644
--- a/board/freescale/ls1021atwr/ls1021atwr.c
+++ b/board/freescale/ls1021atwr/ls1021atwr.c
@@ -272,6 +272,16 @@ int board_early_init_f(void)
 
 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();
 	config_serdes_mux();
-- 
2.1.0.27.g96db324