powerpc/85xx: add T4080 SoC support

The T4080 SoC is a low-power version of the T4160.
T4080 combines 4 dual-threaded Power Architecture e6500
cores with single cluster and two memory complexes.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>

5 files changed, 37 insertions, 3 deletions

diff --git a/arch/powerpc/cpu/mpc85xx/Makefile b/arch/powerpc/cpu/mpc85xx/Makefile
index 4094785..ad26b43 100644
--- a/arch/powerpc/cpu/mpc85xx/Makefile
+++ b/arch/powerpc/cpu/mpc85xx/Makefile
@@ -44,6 +44,7 @@ obj-$(CONFIG_PPC_P5020) += p5020_ids.o
 obj-$(CONFIG_PPC_P5040) += p5040_ids.o
 obj-$(CONFIG_PPC_T4240) += t4240_ids.o
 obj-$(CONFIG_PPC_T4160) += t4240_ids.o
+obj-$(CONFIG_PPC_T4080) += t4240_ids.o
 obj-$(CONFIG_PPC_B4420) += b4860_ids.o
 obj-$(CONFIG_PPC_B4860) += b4860_ids.o
 obj-$(CONFIG_PPC_T1040) += t1040_ids.o
@@ -88,6 +89,7 @@ obj-$(CONFIG_PPC_P5020) += p5020_serdes.o
 obj-$(CONFIG_PPC_P5040) += p5040_serdes.o
 obj-$(CONFIG_PPC_T4240) += t4240_serdes.o
 obj-$(CONFIG_PPC_T4160) += t4240_serdes.o
+obj-$(CONFIG_PPC_T4080) += t4240_serdes.o
 obj-$(CONFIG_PPC_B4420) += b4860_serdes.o
 obj-$(CONFIG_PPC_B4860) += b4860_serdes.o
 obj-$(CONFIG_BSC9132) += bsc9132_serdes.o
diff --git a/arch/powerpc/cpu/mpc85xx/cpu.c b/arch/powerpc/cpu/mpc85xx/cpu.c
index 12e8e10..684d400 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu.c
@@ -77,6 +77,30 @@ int checkcpu (void)
 	major = SVR_MAJ(svr);
 	minor = SVR_MIN(svr);
 
+#if defined(CONFIG_SYS_FSL_QORIQ_CHASSIS2) && defined(CONFIG_E6500)
+	if (SVR_SOC_VER(svr) == SVR_T4080) {
+		ccsr_rcpm_t *rcpm =
+			(void __iomem *)(CONFIG_SYS_FSL_CORENET_RCPM_ADDR);
+
+		setbits_be32(&gur->devdisr2, FSL_CORENET_DEVDISR2_DTSEC1_6 ||
+			     FSL_CORENET_DEVDISR2_DTSEC1_9);
+		setbits_be32(&gur->devdisr3, FSL_CORENET_DEVDISR3_PCIE3);
+		setbits_be32(&gur->devdisr5, FSL_CORENET_DEVDISR5_DDR3);
+
+		/* It needs SW to disable core4~7 as HW design sake on T4080 */
+		for (i = 4; i < 8; i++)
+			cpu_disable(i);
+
+		/* request core4~7 into PH20 state, prior to entering PCL10
+		 * state, all cores in cluster should be placed in PH20 state.
+		 */
+		setbits_be32(&rcpm->pcph20setr, 0xf0);
+
+		/* put the 2nd cluster into PCL10 state */
+		setbits_be32(&rcpm->clpcl10setr, 1 << 1);
+	}
+#endif
+
 	if (cpu_numcores() > 1) {
 #ifndef CONFIG_MP
 		puts("Unicore software on multiprocessor system!!\n"
diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c
index 36ef232..7e27464 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu_init.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c
@@ -462,10 +462,17 @@ __attribute__((weak, alias("__fsl_serdes__init"))) void fsl_serdes_init(void);
 int enable_cluster_l2(void)
 {
 	int i = 0;
-	u32 cluster;
+	u32 cluster, svr = get_svr();
 	ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
 	struct ccsr_cluster_l2 __iomem *l2cache;
 
+	/* only the L2 of first cluster should be enabled as expected on T4080,
+	 * but there is no EOC in the first cluster as HW sake, so return here
+	 * to skip enabling L2 cache of the 2nd cluster.
+	 */
+	if (SVR_SOC_VER(svr) == SVR_T4080)
+		return 0;
+
 	cluster = in_be32(&gur->tp_cluster[i].lower);
 	if (cluster & TP_CLUSTER_EOC)
 		return 0;
diff --git a/arch/powerpc/cpu/mpc85xx/speed.c b/arch/powerpc/cpu/mpc85xx/speed.c
index d516d4e..3236f6a 100644
--- a/arch/powerpc/cpu/mpc85xx/speed.c
+++ b/arch/powerpc/cpu/mpc85xx/speed.c
@@ -123,7 +123,8 @@ void get_sys_info(sys_info_t *sys_info)
 	 * T4240/T4160 Rev1.0. eg. It's 12 in Rev1.0, however, for Rev2.0
 	 * it uses 6.
 	 */
-#if defined(CONFIG_PPC_T4240) || defined(CONFIG_PPC_T4160)
+#if defined(CONFIG_PPC_T4240) || defined(CONFIG_PPC_T4160) || \
+	defined(CONFIG_PPC_T4080)
 	if (SVR_MAJ(get_svr()) >= 2)
 		mem_pll_rat *= 2;
 #endif
diff --git a/arch/powerpc/cpu/mpc85xx/t4240_serdes.c b/arch/powerpc/cpu/mpc85xx/t4240_serdes.c
index ff55e3c..1f99a0a 100644
--- a/arch/powerpc/cpu/mpc85xx/t4240_serdes.c
+++ b/arch/powerpc/cpu/mpc85xx/t4240_serdes.c
@@ -172,7 +172,7 @@ static const struct serdes_config serdes4_cfg_tbl[] = {
 	{18, {PCIE3, PCIE3, PCIE3, PCIE3, AURORA, AURORA, AURORA, AURORA}},
 	{}
 };
-#elif defined(CONFIG_PPC_T4160)
+#elif defined(CONFIG_PPC_T4160) || defined(CONFIG_PPC_T4080)
 static const struct serdes_config serdes1_cfg_tbl[] = {
 	/* SerDes 1 */
 	{1, {XAUI_FM1_MAC9, XAUI_FM1_MAC9,