17 files changed, 944 insertions, 4 deletions

diff --git a/arch/arm/cpu/armv8/cache_v8.c b/arch/arm/cpu/armv8/cache_v8.c
index af3c494..9dbcdf2 100644
--- a/arch/arm/cpu/armv8/cache_v8.c
+++ b/arch/arm/cpu/armv8/cache_v8.c
@@ -73,12 +73,17 @@ void invalidate_dcache_all(void)
 	__asm_invalidate_dcache_all();
 }
 
+void __weak flush_l3_cache(void)
+{
+}
+
 /*
  * Performs a clean & invalidation of the entire data cache at all levels
  */
 void flush_dcache_all(void)
 {
 	__asm_flush_dcache_all();
+	flush_l3_cache();
 }
 
 /*
@@ -211,7 +216,7 @@ void invalidate_icache_all(void)
  * Enable dCache & iCache, whether cache is actually enabled
  * depend on CONFIG_SYS_DCACHE_OFF and CONFIG_SYS_ICACHE_OFF
  */
-void enable_caches(void)
+void __weak enable_caches(void)
 {
 	icache_enable();
 	dcache_enable();
diff --git a/arch/arm/cpu/armv8/fsl-lsch3/Makefile b/arch/arm/cpu/armv8/fsl-lsch3/Makefile
new file mode 100644
index 0000000..9249537
--- /dev/null
+++ b/arch/arm/cpu/armv8/fsl-lsch3/Makefile
@@ -0,0 +1,9 @@
+#
+# Copyright 2014, Freescale Semiconductor
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y += cpu.o
+obj-y += lowlevel.o
+obj-y += speed.o
diff --git a/arch/arm/cpu/armv8/fsl-lsch3/README b/arch/arm/cpu/armv8/fsl-lsch3/README
new file mode 100644
index 0000000..de34a91
--- /dev/null
+++ b/arch/arm/cpu/armv8/fsl-lsch3/README
@@ -0,0 +1,10 @@
+#
+# Copyright 2014 Freescale Semiconductor
+#
+# SPDX-License-Identifier:      GPL-2.0+
+#
+
+Freescale LayerScape with Chassis Generation 3
+
+This architecture supports Freescale ARMv8 SoCs with Chassis generation 3,
+for example LS2100A.
diff --git a/arch/arm/cpu/armv8/fsl-lsch3/cpu.c b/arch/arm/cpu/armv8/fsl-lsch3/cpu.c
new file mode 100644
index 0000000..46965f0
--- /dev/null
+++ b/arch/arm/cpu/armv8/fsl-lsch3/cpu.c
@@ -0,0 +1,425 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/armv8/mmu.h>
+#include <asm/io.h>
+#include <asm/arch-fsl-lsch3/immap_lsch3.h>
+#include "cpu.h"
+#include "speed.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifndef CONFIG_SYS_DCACHE_OFF
+/*
+ * To start MMU before DDR is available, we create MMU table in SRAM.
+ * The base address of SRAM is CONFIG_SYS_FSL_OCRAM_BASE. We use three
+ * levels of translation tables here to cover 40-bit address space.
+ * We use 4KB granule size, with 40 bits physical address, T0SZ=24
+ * Level 0 IA[39], table address @0
+ * Level 1 IA[31:30], table address @01000, 0x2000
+ * Level 2 IA[29:21], table address @0x3000
+ */
+
+#define SECTION_SHIFT_L0	39UL
+#define SECTION_SHIFT_L1	30UL
+#define SECTION_SHIFT_L2	21UL
+#define BLOCK_SIZE_L0		0x8000000000UL
+#define BLOCK_SIZE_L1		(1 << SECTION_SHIFT_L1)
+#define BLOCK_SIZE_L2		(1 << SECTION_SHIFT_L2)
+#define CONFIG_SYS_IFC_BASE	0x30000000
+#define CONFIG_SYS_IFC_SIZE	0x10000000
+#define CONFIG_SYS_IFC_BASE2	0x500000000
+#define CONFIG_SYS_IFC_SIZE2	0x100000000
+#define TCR_EL2_PS_40BIT	(2 << 16)
+#define LSCH3_VA_BITS		(40)
+#define LSCH3_TCR	(TCR_TG0_4K		| \
+			TCR_EL2_PS_40BIT	| \
+			TCR_SHARED_NON		| \
+			TCR_ORGN_NC		| \
+			TCR_IRGN_NC		| \
+			TCR_T0SZ(LSCH3_VA_BITS))
+
+/*
+ * Final MMU
+ * Let's start from the same layout as early MMU and modify as needed.
+ * IFC regions will be cache-inhibit.
+ */
+#define FINAL_QBMAN_CACHED_MEM	0x818000000UL
+#define FINAL_QBMAN_CACHED_SIZE	0x4000000
+
+
+static inline void early_mmu_setup(void)
+{
+	int el;
+	u64 i;
+	u64 section_l1t0, section_l1t1, section_l2;
+	u64 *level0_table = (u64 *)CONFIG_SYS_FSL_OCRAM_BASE;
+	u64 *level1_table_0 = (u64 *)(CONFIG_SYS_FSL_OCRAM_BASE + 0x1000);
+	u64 *level1_table_1 = (u64 *)(CONFIG_SYS_FSL_OCRAM_BASE + 0x2000);
+	u64 *level2_table = (u64 *)(CONFIG_SYS_FSL_OCRAM_BASE + 0x3000);
+
+
+	level0_table[0] =
+		(u64)level1_table_0 | PMD_TYPE_TABLE;
+	level0_table[1] =
+		(u64)level1_table_1 | PMD_TYPE_TABLE;
+
+	/*
+	 * set level 1 table 0 to cache_inhibit, covering 0 to 512GB
+	 * set level 1 table 1 to cache enabled, covering 512GB to 1TB
+	 * set level 2 table to cache-inhibit, covering 0 to 1GB
+	 */
+	section_l1t0 = 0;
+	section_l1t1 = BLOCK_SIZE_L0;
+	section_l2 = 0;
+	for (i = 0; i < 512; i++) {
+		set_pgtable_section(level1_table_0, i, section_l1t0,
+				    MT_DEVICE_NGNRNE);
+		set_pgtable_section(level1_table_1, i, section_l1t1,
+				    MT_NORMAL);
+		set_pgtable_section(level2_table, i, section_l2,
+				    MT_DEVICE_NGNRNE);
+		section_l1t0 += BLOCK_SIZE_L1;
+		section_l1t1 += BLOCK_SIZE_L1;
+		section_l2 += BLOCK_SIZE_L2;
+	}
+
+	level1_table_0[0] =
+		(u64)level2_table | PMD_TYPE_TABLE;
+	level1_table_0[1] =
+		0x40000000 | PMD_SECT_AF | PMD_TYPE_SECT |
+		PMD_ATTRINDX(MT_DEVICE_NGNRNE);
+	level1_table_0[2] =
+		0x80000000 | PMD_SECT_AF | PMD_TYPE_SECT |
+		PMD_ATTRINDX(MT_NORMAL);
+	level1_table_0[3] =
+		0xc0000000 | PMD_SECT_AF | PMD_TYPE_SECT |
+		PMD_ATTRINDX(MT_NORMAL);
+
+	/* Rewrite table to enable cache */
+	set_pgtable_section(level2_table,
+			    CONFIG_SYS_FSL_OCRAM_BASE >> SECTION_SHIFT_L2,
+			    CONFIG_SYS_FSL_OCRAM_BASE,
+			    MT_NORMAL);
+	for (i = CONFIG_SYS_IFC_BASE >> SECTION_SHIFT_L2;
+	     i < (CONFIG_SYS_IFC_BASE + CONFIG_SYS_IFC_SIZE)
+	     >> SECTION_SHIFT_L2; i++) {
+		section_l2 = i << SECTION_SHIFT_L2;
+		set_pgtable_section(level2_table, i,
+				    section_l2, MT_NORMAL);
+	}
+
+	el = current_el();
+	set_ttbr_tcr_mair(el, (u64)level0_table, LSCH3_TCR, MEMORY_ATTRIBUTES);
+	set_sctlr(get_sctlr() | CR_M);
+}
+
+/*
+ * This final tale looks similar to early table, but different in detail.
+ * These tables are in regular memory. Cache on IFC is disabled. One sub table
+ * is added to enable cache for QBMan.
+ */
+static inline void final_mmu_setup(void)
+{
+	int el;
+	u64 i, tbl_base, tbl_limit, section_base;
+	u64 section_l1t0, section_l1t1, section_l2;
+	u64 *level0_table = (u64 *)gd->arch.tlb_addr;
+	u64 *level1_table_0 = (u64 *)(gd->arch.tlb_addr + 0x1000);
+	u64 *level1_table_1 = (u64 *)(gd->arch.tlb_addr + 0x2000);
+	u64 *level2_table_0 = (u64 *)(gd->arch.tlb_addr + 0x3000);
+	u64 *level2_table_1 = (u64 *)(gd->arch.tlb_addr + 0x4000);
+
+
+	level0_table[0] =
+		(u64)level1_table_0 | PMD_TYPE_TABLE;
+	level0_table[1] =
+		(u64)level1_table_1 | PMD_TYPE_TABLE;
+
+	/*
+	 * set level 1 table 0 to cache_inhibit, covering 0 to 512GB
+	 * set level 1 table 1 to cache enabled, covering 512GB to 1TB
+	 * set level 2 table 0 to cache-inhibit, covering 0 to 1GB
+	 */
+	section_l1t0 = 0;
+	section_l1t1 = BLOCK_SIZE_L0;
+	section_l2 = 0;
+	for (i = 0; i < 512; i++) {
+		set_pgtable_section(level1_table_0, i, section_l1t0,
+				    MT_DEVICE_NGNRNE);
+		set_pgtable_section(level1_table_1, i, section_l1t1,
+				    MT_NORMAL);
+		set_pgtable_section(level2_table_0, i, section_l2,
+				    MT_DEVICE_NGNRNE);
+		section_l1t0 += BLOCK_SIZE_L1;
+		section_l1t1 += BLOCK_SIZE_L1;
+		section_l2 += BLOCK_SIZE_L2;
+	}
+
+	level1_table_0[0] =
+		(u64)level2_table_0 | PMD_TYPE_TABLE;
+	level1_table_0[2] =
+		0x80000000 | PMD_SECT_AF | PMD_TYPE_SECT |
+		PMD_ATTRINDX(MT_NORMAL);
+	level1_table_0[3] =
+		0xc0000000 | PMD_SECT_AF | PMD_TYPE_SECT |
+		PMD_ATTRINDX(MT_NORMAL);
+
+	/* Rewrite table to enable cache */
+	set_pgtable_section(level2_table_0,
+			    CONFIG_SYS_FSL_OCRAM_BASE >> SECTION_SHIFT_L2,
+			    CONFIG_SYS_FSL_OCRAM_BASE,
+			    MT_NORMAL);
+
+	/*
+	 * Fill in other part of tables if cache is needed
+	 * If finer granularity than 1GB is needed, sub table
+	 * should be created.
+	 */
+	section_base = FINAL_QBMAN_CACHED_MEM & ~(BLOCK_SIZE_L1 - 1);
+	i = section_base >> SECTION_SHIFT_L1;
+	level1_table_0[i] = (u64)level2_table_1 | PMD_TYPE_TABLE;
+	section_l2 = section_base;
+	for (i = 0; i < 512; i++) {
+		set_pgtable_section(level2_table_1, i, section_l2,
+				    MT_DEVICE_NGNRNE);
+		section_l2 += BLOCK_SIZE_L2;
+	}
+	tbl_base = FINAL_QBMAN_CACHED_MEM & (BLOCK_SIZE_L1 - 1);
+	tbl_limit = (FINAL_QBMAN_CACHED_MEM + FINAL_QBMAN_CACHED_SIZE) &
+		    (BLOCK_SIZE_L1 - 1);
+	for (i = tbl_base >> SECTION_SHIFT_L2;
+	     i < tbl_limit >> SECTION_SHIFT_L2; i++) {
+		section_l2 = section_base + (i << SECTION_SHIFT_L2);
+		set_pgtable_section(level2_table_1, i,
+				    section_l2, MT_NORMAL);
+	}
+
+	/* flush new MMU table */
+	flush_dcache_range(gd->arch.tlb_addr,
+			   gd->arch.tlb_addr +  gd->arch.tlb_size);
+
+	/* point TTBR to the new table */
+	el = current_el();
+	asm volatile("dsb sy");
+	if (el == 1) {
+		asm volatile("msr ttbr0_el1, %0"
+			     : : "r" ((u64)level0_table) : "memory");
+	} else if (el == 2) {
+		asm volatile("msr ttbr0_el2, %0"
+			     : : "r" ((u64)level0_table) : "memory");
+	} else if (el == 3) {
+		asm volatile("msr ttbr0_el3, %0"
+			     : : "r" ((u64)level0_table) : "memory");
+	} else {
+		hang();
+	}
+	asm volatile("isb");
+
+	/*
+	 * MMU is already enabled, just need to invalidate TLB to load the
+	 * new table. The new table is compatible with the current table, if
+	 * MMU somehow walks through the new table before invalidation TLB,
+	 * it still works. So we don't need to turn off MMU here.
+	 */
+}
+
+int arch_cpu_init(void)
+{
+	icache_enable();
+	__asm_invalidate_dcache_all();
+	__asm_invalidate_tlb_all();
+	early_mmu_setup();
+	set_sctlr(get_sctlr() | CR_C);
+	return 0;
+}
+
+/*
+ * flush_l3_cache
+ * Dickens L3 cache can be flushed by transitioning from FAM to SFONLY power
+ * state, by writing to HP-F P-state request register.
+ * Fixme: This function should moved to a common file if other SoCs also use
+ * the same Dickens.
+ */
+#define HNF0_PSTATE_REQ 0x04200010
+#define HNF1_PSTATE_REQ 0x04210010
+#define HNF2_PSTATE_REQ 0x04220010
+#define HNF3_PSTATE_REQ 0x04230010
+#define HNF4_PSTATE_REQ 0x04240010
+#define HNF5_PSTATE_REQ 0x04250010
+#define HNF6_PSTATE_REQ 0x04260010
+#define HNF7_PSTATE_REQ 0x04270010
+#define HNFPSTAT_MASK (0xFFFFFFFFFFFFFFFC)
+#define HNFPSTAT_FAM	0x3
+#define HNFPSTAT_SFONLY 0x01
+
+static void hnf_pstate_req(u64 *ptr, u64 state)
+{
+	int timeout = 1000;
+	out_le64(ptr, (in_le64(ptr) & HNFPSTAT_MASK) | (state & 0x3));
+	ptr++;
+	/* checking if the transition is completed */
+	while (timeout > 0) {
+		if (((in_le64(ptr) & 0x0c) >> 2) == (state & 0x3))
+			break;
+		udelay(100);
+		timeout--;
+	}
+}
+
+void flush_l3_cache(void)
+{
+	hnf_pstate_req((u64 *)HNF0_PSTATE_REQ, HNFPSTAT_SFONLY);
+	hnf_pstate_req((u64 *)HNF1_PSTATE_REQ, HNFPSTAT_SFONLY);
+	hnf_pstate_req((u64 *)HNF2_PSTATE_REQ, HNFPSTAT_SFONLY);
+	hnf_pstate_req((u64 *)HNF3_PSTATE_REQ, HNFPSTAT_SFONLY);
+	hnf_pstate_req((u64 *)HNF4_PSTATE_REQ, HNFPSTAT_SFONLY);
+	hnf_pstate_req((u64 *)HNF5_PSTATE_REQ, HNFPSTAT_SFONLY);
+	hnf_pstate_req((u64 *)HNF6_PSTATE_REQ, HNFPSTAT_SFONLY);
+	hnf_pstate_req((u64 *)HNF7_PSTATE_REQ, HNFPSTAT_SFONLY);
+	hnf_pstate_req((u64 *)HNF0_PSTATE_REQ, HNFPSTAT_FAM);
+	hnf_pstate_req((u64 *)HNF1_PSTATE_REQ, HNFPSTAT_FAM);
+	hnf_pstate_req((u64 *)HNF2_PSTATE_REQ, HNFPSTAT_FAM);
+	hnf_pstate_req((u64 *)HNF3_PSTATE_REQ, HNFPSTAT_FAM);
+	hnf_pstate_req((u64 *)HNF4_PSTATE_REQ, HNFPSTAT_FAM);
+	hnf_pstate_req((u64 *)HNF5_PSTATE_REQ, HNFPSTAT_FAM);
+	hnf_pstate_req((u64 *)HNF6_PSTATE_REQ, HNFPSTAT_FAM);
+	hnf_pstate_req((u64 *)HNF7_PSTATE_REQ, HNFPSTAT_FAM);
+}
+
+/*
+ * This function is called from lib/board.c.
+ * It recreates MMU table in main memory. MMU and d-cache are enabled earlier.
+ * There is no need to disable d-cache for this operation.
+ */
+void enable_caches(void)
+{
+	final_mmu_setup();
+	__asm_invalidate_tlb_all();
+}
+#endif
+
+static inline u32 initiator_type(u32 cluster, int init_id)
+{
+	struct ccsr_gur *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
+	u32 idx = (cluster >> (init_id * 8)) & TP_CLUSTER_INIT_MASK;
+	u32 type = in_le32(&gur->tp_ityp[idx]);
+
+	if (type & TP_ITYP_AV)
+		return type;
+
+	return 0;
+}
+
+u32 cpu_mask(void)
+{
+	struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
+	int i = 0, count = 0;
+	u32 cluster, type, mask = 0;
+
+	do {
+		int j;
+		cluster = in_le32(&gur->tp_cluster[i].lower);
+		for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
+			type = initiator_type(cluster, j);
+			if (type) {
+				if (TP_ITYP_TYPE(type) == TP_ITYP_TYPE_ARM)
+					mask |= 1 << count;
+				count++;
+			}
+		}
+		i++;
+	} while ((cluster & TP_CLUSTER_EOC) != TP_CLUSTER_EOC);
+
+	return mask;
+}
+
+/*
+ * Return the number of cores on this SOC.
+ */
+int cpu_numcores(void)
+{
+	return hweight32(cpu_mask());
+}
+
+int fsl_qoriq_core_to_cluster(unsigned int core)
+{
+	struct ccsr_gur __iomem *gur =
+		(void __iomem *)(CONFIG_SYS_FSL_GUTS_ADDR);
+	int i = 0, count = 0;
+	u32 cluster;
+
+	do {
+		int j;
+		cluster = in_le32(&gur->tp_cluster[i].lower);
+		for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
+			if (initiator_type(cluster, j)) {
+				if (count == core)
+					return i;
+				count++;
+			}
+		}
+		i++;
+	} while ((cluster & TP_CLUSTER_EOC) != TP_CLUSTER_EOC);
+
+	return -1;      /* cannot identify the cluster */
+}
+
+u32 fsl_qoriq_core_to_type(unsigned int core)
+{
+	struct ccsr_gur __iomem *gur =
+		(void __iomem *)(CONFIG_SYS_FSL_GUTS_ADDR);
+	int i = 0, count = 0;
+	u32 cluster, type;
+
+	do {
+		int j;
+		cluster = in_le32(&gur->tp_cluster[i].lower);
+		for (j = 0; j < TP_INIT_PER_CLUSTER; j++) {
+			type = initiator_type(cluster, j);
+			if (type) {
+				if (count == core)
+					return type;
+				count++;
+			}
+		}
+		i++;
+	} while ((cluster & TP_CLUSTER_EOC) != TP_CLUSTER_EOC);
+
+	return -1;      /* cannot identify the cluster */
+}
+
+#ifdef CONFIG_DISPLAY_CPUINFO
+int print_cpuinfo(void)
+{
+	struct sys_info sysinfo;
+	char buf[32];
+	unsigned int i, core;
+	u32 type;
+
+	get_sys_info(&sysinfo);
+	puts("Clock Configuration:");
+	for_each_cpu(i, core, cpu_numcores(), cpu_mask()) {
+		if (!(i % 3))
+			puts("\n       ");
+		type = TP_ITYP_VER(fsl_qoriq_core_to_type(core));
+		printf("CPU%d(%s):%-4s MHz  ", core,
+		       type == TY_ITYP_VER_A7 ? "A7 " :
+		       (type == TY_ITYP_VER_A53 ? "A53" :
+			(type == TY_ITYP_VER_A57 ? "A57" : "   ")),
+		       strmhz(buf, sysinfo.freq_processor[core]));
+	}
+	printf("\n       Bus:      %-4s MHz  ",
+	       strmhz(buf, sysinfo.freq_systembus));
+	printf("DDR:      %-4s MHz", strmhz(buf, sysinfo.freq_ddrbus));
+	puts("\n");
+
+	return 0;
+}
+#endif
diff --git a/arch/arm/cpu/armv8/fsl-lsch3/cpu.h b/arch/arm/cpu/armv8/fsl-lsch3/cpu.h
new file mode 100644
index 0000000..28544d7
--- /dev/null
+++ b/arch/arm/cpu/armv8/fsl-lsch3/cpu.h
@@ -0,0 +1,7 @@
+/*
+ * Copyright 2014, Freescale Semiconductor
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+int fsl_qoriq_core_to_cluster(unsigned int core);
diff --git a/arch/arm/cpu/armv8/fsl-lsch3/lowlevel.S b/arch/arm/cpu/armv8/fsl-lsch3/lowlevel.S
new file mode 100644
index 0000000..ad32b6c
--- /dev/null
+++ b/arch/arm/cpu/armv8/fsl-lsch3/lowlevel.S
@@ -0,0 +1,65 @@
+/*
+ * (C) Copyright 2014 Freescale Semiconductor
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ * Extracted from armv8/start.S
+ */
+
+#include <config.h>
+#include <linux/linkage.h>
+#include <asm/macro.h>
+
+ENTRY(lowlevel_init)
+	mov	x29, lr			/* Save LR */
+
+	/* Set the SMMU page size in the sACR register */
+	ldr	x1, =SMMU_BASE
+	ldr	w0, [x1, #0x10]
+	orr	w0, w0, #1 << 16  /* set sACR.pagesize to indicate 64K page */
+	str	w0, [x1, #0x10]
+
+	/* Initialize GIC Secure Bank Status */
+#if defined(CONFIG_GICV2) || defined(CONFIG_GICV3)
+	branch_if_slave x0, 1f
+	ldr	x0, =GICD_BASE
+	bl	gic_init_secure
+1:
+#ifdef CONFIG_GICV3
+	ldr	x0, =GICR_BASE
+	bl	gic_init_secure_percpu
+#elif defined(CONFIG_GICV2)
+	ldr	x0, =GICD_BASE
+	ldr	x1, =GICC_BASE
+	bl	gic_init_secure_percpu
+#endif
+#endif
+
+	branch_if_master x0, x1, 1f
+
+	/*
+	 * Slave should wait for master clearing spin table.
+	 * This sync prevent salves observing incorrect
+	 * value of spin table and jumping to wrong place.
+	 */
+#if defined(CONFIG_GICV2) || defined(CONFIG_GICV3)
+#ifdef CONFIG_GICV2
+	ldr	x0, =GICC_BASE
+#endif
+	bl	gic_wait_for_interrupt
+#endif
+
+	/*
+	 * All processors will enter EL2 and optionally EL1.
+	 */
+	bl	armv8_switch_to_el2
+#ifdef CONFIG_ARMV8_SWITCH_TO_EL1
+	bl	armv8_switch_to_el1
+#endif
+	b	2f
+
+1:
+2:
+	mov	lr, x29			/* Restore LR */
+	ret
+ENDPROC(lowlevel_init)
diff --git a/arch/arm/cpu/armv8/fsl-lsch3/speed.c b/arch/arm/cpu/armv8/fsl-lsch3/speed.c
new file mode 100644
index 0000000..dc4a34b
--- /dev/null
+++ b/arch/arm/cpu/armv8/fsl-lsch3/speed.c
@@ -0,0 +1,176 @@
+/*
+ * Copyright 2014, Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ * Derived from arch/power/cpu/mpc85xx/speed.c
+ */
+
+#include <common.h>
+#include <linux/compiler.h>
+#include <fsl_ifc.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <asm/arch-fsl-lsch3/immap_lsch3.h>
+#include <asm/arch/clock.h>
+#include "cpu.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifndef CONFIG_SYS_FSL_NUM_CC_PLLS
+#define CONFIG_SYS_FSL_NUM_CC_PLLS	6
+#endif
+
+
+void get_sys_info(struct sys_info *sys_info)
+{
+	struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
+#ifdef CONFIG_FSL_IFC
+	struct fsl_ifc *ifc_regs = (void *)CONFIG_SYS_IFC_ADDR;
+	u32 ccr;
+#endif
+	struct ccsr_clk_cluster_group __iomem *clk_grp[2] = {
+		(void *)(CONFIG_SYS_FSL_CH3_CLK_GRPA_ADDR),
+		(void *)(CONFIG_SYS_FSL_CH3_CLK_GRPB_ADDR)
+	};
+	struct ccsr_clk_ctrl __iomem *clk_ctrl =
+		(void *)(CONFIG_SYS_FSL_CH3_CLK_CTRL_ADDR);
+	unsigned int cpu;
+	const u8 core_cplx_pll[16] = {
+		[0] = 0,	/* CC1 PPL / 1 */
+		[1] = 0,	/* CC1 PPL / 2 */
+		[2] = 0,	/* CC1 PPL / 4 */
+		[4] = 1,	/* CC2 PPL / 1 */
+		[5] = 1,	/* CC2 PPL / 2 */
+		[6] = 1,	/* CC2 PPL / 4 */
+		[8] = 2,	/* CC3 PPL / 1 */
+		[9] = 2,	/* CC3 PPL / 2 */
+		[10] = 2,	/* CC3 PPL / 4 */
+		[12] = 3,	/* CC4 PPL / 1 */
+		[13] = 3,	/* CC4 PPL / 2 */
+		[14] = 3,	/* CC4 PPL / 4 */
+	};
+
+	const u8 core_cplx_pll_div[16] = {
+		[0] = 1,	/* CC1 PPL / 1 */
+		[1] = 2,	/* CC1 PPL / 2 */
+		[2] = 4,	/* CC1 PPL / 4 */
+		[4] = 1,	/* CC2 PPL / 1 */
+		[5] = 2,	/* CC2 PPL / 2 */
+		[6] = 4,	/* CC2 PPL / 4 */
+		[8] = 1,	/* CC3 PPL / 1 */
+		[9] = 2,	/* CC3 PPL / 2 */
+		[10] = 4,	/* CC3 PPL / 4 */
+		[12] = 1,	/* CC4 PPL / 1 */
+		[13] = 2,	/* CC4 PPL / 2 */
+		[14] = 4,	/* CC4 PPL / 4 */
+	};
+
+	uint i, cluster;
+	uint freq_c_pll[CONFIG_SYS_FSL_NUM_CC_PLLS];
+	uint ratio[CONFIG_SYS_FSL_NUM_CC_PLLS];
+	unsigned long sysclk = CONFIG_SYS_CLK_FREQ;
+	int cc_group[12] = CONFIG_SYS_FSL_CLUSTER_CLOCKS;
+	u32 c_pll_sel, cplx_pll;
+	void *offset;
+
+	sys_info->freq_systembus = sysclk;
+#ifdef CONFIG_DDR_CLK_FREQ
+	sys_info->freq_ddrbus = CONFIG_DDR_CLK_FREQ;
+#else
+	sys_info->freq_ddrbus = sysclk;
+#endif
+
+	sys_info->freq_systembus *= (in_le32(&gur->rcwsr[0]) >>
+			FSL_CHASSIS3_RCWSR0_SYS_PLL_RAT_SHIFT) &
+			FSL_CHASSIS3_RCWSR0_SYS_PLL_RAT_MASK;
+	sys_info->freq_ddrbus *= (in_le32(&gur->rcwsr[0]) >>
+			FSL_CHASSIS3_RCWSR0_MEM_PLL_RAT_SHIFT) &
+			FSL_CHASSIS3_RCWSR0_MEM_PLL_RAT_MASK;
+
+	for (i = 0; i < CONFIG_SYS_FSL_NUM_CC_PLLS; i++) {
+		/*
+		 * fixme: prefer to combine the following into one line, but
+		 * cannot pass compiling without warning about in_le32.
+		 */
+		offset = (void *)((size_t)clk_grp[i/3] +
+			 offsetof(struct ccsr_clk_cluster_group,
+				  pllngsr[i%3].gsr));
+		ratio[i] = (in_le32(offset) >> 1) & 0x3f;
+		if (ratio[i] > 4)
+			freq_c_pll[i] = sysclk * ratio[i];
+		else
+			freq_c_pll[i] = sys_info->freq_systembus * ratio[i];
+	}
+
+	for_each_cpu(i, cpu, cpu_numcores(), cpu_mask()) {
+		cluster = fsl_qoriq_core_to_cluster(cpu);
+		c_pll_sel = (in_le32(&clk_ctrl->clkcncsr[cluster].csr) >> 27)
+			    & 0xf;
+		cplx_pll = core_cplx_pll[c_pll_sel];
+		cplx_pll += cc_group[cluster] - 1;
+		sys_info->freq_processor[cpu] =
+			freq_c_pll[cplx_pll] / core_cplx_pll_div[c_pll_sel];
+	}
+
+#if defined(CONFIG_FSL_IFC)
+	ccr = in_le32(&ifc_regs->ifc_ccr);
+	ccr = ((ccr & IFC_CCR_CLK_DIV_MASK) >> IFC_CCR_CLK_DIV_SHIFT) + 1;
+
+	sys_info->freq_localbus = sys_info->freq_systembus / ccr;
+#endif
+}
+
+
+int get_clocks(void)
+{
+	struct sys_info sys_info;
+	get_sys_info(&sys_info);
+	gd->cpu_clk = sys_info.freq_processor[0];
+	gd->bus_clk = sys_info.freq_systembus;
+	gd->mem_clk = sys_info.freq_ddrbus;
+
+#if defined(CONFIG_FSL_ESDHC)
+	gd->arch.sdhc_clk = gd->bus_clk / 2;
+#endif /* defined(CONFIG_FSL_ESDHC) */
+
+	if (gd->cpu_clk != 0)
+		return 0;
+	else
+		return 1;
+}
+
+/********************************************
+ * get_bus_freq
+ * return system bus freq in Hz
+ *********************************************/
+ulong get_bus_freq(ulong dummy)
+{
+	if (!gd->bus_clk)
+		get_clocks();
+
+	return gd->bus_clk;
+}
+
+/********************************************
+ * get_ddr_freq
+ * return ddr bus freq in Hz
+ *********************************************/
+ulong get_ddr_freq(ulong dummy)
+{
+	if (!gd->mem_clk)
+		get_clocks();
+
+	return gd->mem_clk;
+}
+
+unsigned int mxc_get_clock(enum mxc_clock clk)
+{
+	switch (clk) {
+	case MXC_I2C_CLK:
+		return get_bus_freq(0) / 2;
+	default:
+		printf("Unsupported clock\n");
+	}
+	return 0;
+}
diff --git a/arch/arm/cpu/armv8/fsl-lsch3/speed.h b/arch/arm/cpu/armv8/fsl-lsch3/speed.h
new file mode 100644
index 0000000..15af5b9
--- /dev/null
+++ b/arch/arm/cpu/armv8/fsl-lsch3/speed.h
@@ -0,0 +1,7 @@
+/*
+ * Copyright 2014, Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+void get_sys_info(struct sys_info *sys_info);
diff --git a/arch/arm/include/asm/arch-fsl-lsch3/clock.h b/arch/arm/include/asm/arch-fsl-lsch3/clock.h
new file mode 100644
index 0000000..831af0b
--- /dev/null
+++ b/arch/arm/include/asm/arch-fsl-lsch3/clock.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ */
+
+#ifndef __ASM_ARCH_FSL_LSCH3_CLOCK_H_
+#define __ASM_ARCH_FSL_LSCH3_CLOCK_H_
+
+#include <common.h>
+
+enum mxc_clock {
+	MXC_ARM_CLK = 0,
+	MXC_BUS_CLK,
+	MXC_UART_CLK,
+	MXC_ESDHC_CLK,
+	MXC_I2C_CLK,
+};
+
+unsigned int mxc_get_clock(enum mxc_clock clk);
+
+#endif /* __ASM_ARCH_FSL_LSCH3_CLOCK_H_ */
diff --git a/arch/arm/include/asm/arch-fsl-lsch3/config.h b/arch/arm/include/asm/arch-fsl-lsch3/config.h
new file mode 100644
index 0000000..c987a19
--- /dev/null
+++ b/arch/arm/include/asm/arch-fsl-lsch3/config.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2014, Freescale Semiconductor
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _ASM_ARMV8_FSL_LSCH3_CONFIG_
+#define _ASM_ARMV8_FSL_LSCH3_CONFIG_
+
+#include <fsl_ddrc_version.h>
+
+#define CONFIG_SYS_FSL_OCRAM_BASE	0x18000000	/* initial RAM */
+/* Link Definitions */
+#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_FSL_OCRAM_BASE + 0xfff0)
+
+#define CONFIG_SYS_IMMR				0x01000000
+#define CONFIG_SYS_FSL_DDR_ADDR			(CONFIG_SYS_IMMR + 0x00080000)
+#define CONFIG_SYS_FSL_DDR2_ADDR		(CONFIG_SYS_IMMR + 0x00090000)
+#define CONFIG_SYS_FSL_GUTS_ADDR		(CONFIG_SYS_IMMR + 0x00E00000)
+#define CONFIG_SYS_FSL_PMU_ADDR			(CONFIG_SYS_IMMR + 0x00E30000)
+#define CONFIG_SYS_FSL_CH3_CLK_GRPA_ADDR	(CONFIG_SYS_IMMR + 0x00300000)
+#define CONFIG_SYS_FSL_CH3_CLK_GRPB_ADDR	(CONFIG_SYS_IMMR + 0x00310000)
+#define CONFIG_SYS_FSL_CH3_CLK_CTRL_ADDR	(CONFIG_SYS_IMMR + 0x00370000)
+#define CONFIG_SYS_IFC_ADDR			(CONFIG_SYS_IMMR + 0x01240000)
+#define CONFIG_SYS_NS16550_COM1			(CONFIG_SYS_IMMR + 0x011C0500)
+#define CONFIG_SYS_NS16550_COM2			(CONFIG_SYS_IMMR + 0x011C0600)
+#define CONFIG_SYS_FSL_TIMER_ADDR		0x023d0000
+#define CONFIG_SYS_FSL_PMU_CLTBENR		(CONFIG_SYS_FSL_PMU_ADDR + \
+						 0x18A0)
+
+#define I2C1_BASE_ADDR				(CONFIG_SYS_IMMR + 0x01000000)
+#define I2C2_BASE_ADDR				(CONFIG_SYS_IMMR + 0x01010000)
+#define I2C3_BASE_ADDR				(CONFIG_SYS_IMMR + 0x01020000)
+#define I2C4_BASE_ADDR				(CONFIG_SYS_IMMR + 0x01030000)
+
+/* Generic Interrupt Controller Definitions */
+#define GICD_BASE		0x06000000
+#define GICR_BASE		0x06100000
+
+/* SMMU Defintions */
+#define SMMU_BASE		0x05000000 /* GR0 Base */
+
+/* DDR */
+#define CONFIG_SYS_FSL_DDR_LE
+#define CONFIG_VERY_BIG_RAM
+#define CONFIG_SYS_FSL_DDRC_ARM_GEN3	/* Enable Freescale ARM DDR3 driver */
+#define CONFIG_SYS_FSL_DDR		/* Freescale DDR driver */
+#define CONFIG_SYS_LS2_DDR_BLOCK1_SIZE	((phys_size_t)2 << 30)
+#define CONFIG_MAX_MEM_MAPPED		CONFIG_SYS_LS2_DDR_BLOCK1_SIZE
+#define CONFIG_SYS_FSL_DDR_VER		FSL_DDR_VER_5_0
+
+
+/* IFC */
+#define CONFIG_SYS_FSL_IFC_LE
+
+#ifdef CONFIG_LS2100A
+#define CONFIG_MAX_CPUS				16
+#define CONFIG_SYS_FSL_IFC_BANK_COUNT		8
+#define CONFIG_NUM_DDR_CONTROLLERS		2
+#define CONFIG_SYS_FSL_CLUSTER_CLOCKS		{ 1, 1, 4, 4 }
+#else
+#error SoC not defined
+#endif
+
+#endif /* _ASM_ARMV8_FSL_LSCH3_CONFIG_ */
diff --git a/arch/arm/include/asm/arch-fsl-lsch3/gpio.h b/arch/arm/include/asm/arch-fsl-lsch3/gpio.h
new file mode 100644
index 0000000..f23a78c
--- /dev/null
+++ b/arch/arm/include/asm/arch-fsl-lsch3/gpio.h
@@ -0,0 +1,9 @@
+/*
+ * Copyright 2014, Freescale Semiconductor
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _ASM_ARMV8_FSL_LSCH3_GPIO_H_
+#define _ASM_ARMV8_FSL_LSCH3_GPIO_H_
+#endif	/* _ASM_ARMV8_FSL_LSCH3_GPIO_H_ */
diff --git a/arch/arm/include/asm/arch-fsl-lsch3/immap_lsch3.h b/arch/arm/include/asm/arch-fsl-lsch3/immap_lsch3.h
new file mode 100644
index 0000000..18e66bd
--- /dev/null
+++ b/arch/arm/include/asm/arch-fsl-lsch3/immap_lsch3.h
@@ -0,0 +1,116 @@
+/*
+ * LayerScape Internal Memory Map
+ *
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __ARCH_FSL_LSCH3_IMMAP_H
+#define __ARCH_FSL_LSCH3_IMMAP_H_
+
+/* This is chassis generation 3 */
+
+struct sys_info {
+	unsigned long freq_processor[CONFIG_MAX_CPUS];
+	unsigned long freq_systembus;
+	unsigned long freq_ddrbus;
+	unsigned long freq_localbus;
+	unsigned long freq_qe;
+#ifdef CONFIG_SYS_DPAA_FMAN
+	unsigned long freq_fman[CONFIG_SYS_NUM_FMAN];
+#endif
+#ifdef CONFIG_SYS_DPAA_QBMAN
+	unsigned long freq_qman;
+#endif
+#ifdef CONFIG_SYS_DPAA_PME
+	unsigned long freq_pme;
+#endif
+};
+
+/* Global Utilities Block */
+struct ccsr_gur {
+	u32	porsr1;		/* POR status 1 */
+	u32	porsr2;		/* POR status 2 */
+	u8	res_008[0x20-0x8];
+	u32	gpporcr1;	/* General-purpose POR configuration */
+	u32	gpporcr2;	/* General-purpose POR configuration 2 */
+	u32	dcfg_fusesr;	/* Fuse status register */
+	u32	gpporcr3;
+	u32	gpporcr4;
+	u8	res_034[0x70-0x34];
+	u32	devdisr;	/* Device disable control */
+	u32	devdisr2;	/* Device disable control 2 */
+	u32	devdisr3;	/* Device disable control 3 */
+	u32	devdisr4;	/* Device disable control 4 */
+	u32	devdisr5;	/* Device disable control 5 */
+	u32	devdisr6;	/* Device disable control 6 */
+	u32	devdisr7;	/* Device disable control 7 */
+	u8	res_08c[0x90-0x8c];
+	u32	coredisru;	/* uppper portion for support of 64 cores */
+	u32	coredisrl;	/* lower portion for support of 64 cores */
+	u8	res_098[0xa0-0x98];
+	u32	pvr;		/* Processor version */
+	u32	svr;		/* System version */
+	u32	mvr;		/* Manufacturing version */
+	u8	res_0ac[0x100-0xac];
+	u32	rcwsr[32];	/* Reset control word status */
+
+#define FSL_CHASSIS3_RCWSR0_SYS_PLL_RAT_SHIFT	2
+#define FSL_CHASSIS3_RCWSR0_SYS_PLL_RAT_MASK	0x1f
+#define FSL_CHASSIS3_RCWSR0_MEM_PLL_RAT_SHIFT	10
+#define FSL_CHASSIS3_RCWSR0_MEM_PLL_RAT_MASK	0x3f
+	u8	res_180[0x200-0x180];
+	u32	scratchrw[32];	/* Scratch Read/Write */
+	u8	res_280[0x300-0x280];
+	u32	scratchw1r[4];	/* Scratch Read (Write once) */
+	u8	res_310[0x400-0x310];
+	u32	bootlocptrl;	/* Boot location pointer low-order addr */
+	u32	bootlocptrh;	/* Boot location pointer high-order addr */
+	u8	res_408[0x500-0x408];
+	u8	res_500[0x740-0x500];	/* add more registers when needed */
+	u32	tp_ityp[64];	/* Topology Initiator Type Register */
+	struct {
+		u32	upper;
+		u32	lower;
+	} tp_cluster[3];	/* Core Cluster n Topology Register */
+	u8	res_858[0x1000-0x858];
+};
+
+#define TP_ITYP_AV		0x00000001	/* Initiator available */
+#define TP_ITYP_TYPE(x)	(((x) & 0x6) >> 1)	/* Initiator Type */
+#define TP_ITYP_TYPE_ARM	0x0
+#define TP_ITYP_TYPE_PPC	0x1		/* PowerPC */
+#define TP_ITYP_TYPE_OTHER	0x2		/* StarCore DSP */
+#define TP_ITYP_TYPE_HA		0x3		/* HW Accelerator */
+#define TP_ITYP_THDS(x)	(((x) & 0x18) >> 3)	/* # threads */
+#define TP_ITYP_VER(x)	(((x) & 0xe0) >> 5)	/* Initiator Version */
+#define TY_ITYP_VER_A7		0x1
+#define TY_ITYP_VER_A53		0x2
+#define TY_ITYP_VER_A57		0x3
+
+#define TP_CLUSTER_EOC		0x80000000	/* end of clusters */
+#define TP_CLUSTER_INIT_MASK	0x0000003f	/* initiator mask */
+#define TP_INIT_PER_CLUSTER     4
+
+struct ccsr_clk_cluster_group {
+	struct {
+		u8	res_00[0x10];
+		u32	csr;
+		u8	res_14[0x20-0x14];
+	} hwncsr[3];
+	u8	res_60[0x80-0x60];
+	struct {
+		u32	gsr;
+		u8	res_84[0xa0-0x84];
+	} pllngsr[3];
+	u8	res_e0[0x100-0xe0];
+};
+
+struct ccsr_clk_ctrl {
+	struct {
+		u32 csr;	/* core cluster n clock control status */
+		u8  res_04[0x20-0x04];
+	} clkcncsr[8];
+};
+#endif /* __ARCH_FSL_LSCH3_IMMAP_H */
diff --git a/arch/arm/include/asm/arch-fsl-lsch3/imx-regs.h b/arch/arm/include/asm/arch-fsl-lsch3/imx-regs.h
new file mode 100644
index 0000000..8f00535
--- /dev/null
+++ b/arch/arm/include/asm/arch-fsl-lsch3/imx-regs.h
@@ -0,0 +1,13 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ */
+
+#ifndef __ASM_ARCH_FSL_LSCH3_IMX_REGS_H_
+#define __ASM_ARCH_FSL_LSCH3_IMX_REGS_H_
+
+#define I2C_QUIRK_REG	/* enable 8-bit driver */
+
+#endif /* __ASM_ARCH_FSL_LSCH3_IMX_REGS_H_ */
diff --git a/arch/arm/include/asm/config.h b/arch/arm/include/asm/config.h
index 2a20a77..d3433da 100644
--- a/arch/arm/include/asm/config.h
+++ b/arch/arm/include/asm/config.h
@@ -17,4 +17,8 @@
 #define CONFIG_STATIC_RELA
 #endif
 
+#ifdef CONFIG_FSL_LSCH3
+#include <asm/arch-fsl-lsch3/config.h>
+#endif
+
 #endif
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index 74ee9a4..d51ba66 100644
--- a/arch/arm/include/asm/system.h
+++ b/arch/arm/include/asm/system.h
@@ -78,6 +78,8 @@ void gic_send_sgi(unsigned long sgino);
 void wait_for_wakeup(void);
 void smp_kick_all_cpus(void);
 
+void flush_l3_cache(void);
+
 #endif	/* __ASSEMBLY__ */
 
 #else /* CONFIG_ARM64 */
diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c
index 48468d7..c14797c 100644
--- a/drivers/i2c/mxc_i2c.c
+++ b/drivers/i2c/mxc_i2c.c
@@ -429,6 +429,11 @@ static void * const i2c_bases[] = {
 	(void *)I2C3_BASE_ADDR
 #elif defined(CONFIG_VF610)
 	(void *)I2C0_BASE_ADDR
+#elif defined(CONFIG_FSL_LSCH3)
+	(void *)I2C1_BASE_ADDR,
+	(void *)I2C2_BASE_ADDR,
+	(void *)I2C3_BASE_ADDR,
+	(void *)I2C4_BASE_ADDR
 #else
 #error "architecture not supported"
 #endif
diff --git a/include/common.h b/include/common.h
index cc74633..2e5a6d3 100644
--- a/include/common.h
+++ b/include/common.h
@@ -687,9 +687,6 @@ ulong get_PERCLK3(void);
 ulong	get_bus_freq  (ulong);
 int get_serial_clock(void);
 
-#if defined(CONFIG_MPC83xx) || defined(CONFIG_MPC85xx)
-ulong get_ddr_freq(ulong);
-#endif
 #if defined(CONFIG_MPC85xx)
 typedef MPC85xx_SYS_INFO sys_info_t;
 void	get_sys_info  ( sys_info_t * );
@@ -705,6 +702,8 @@ static inline ulong get_ddr_freq(ulong dummy)
 {
 	return get_bus_freq(dummy);
 }
+#else
+ulong get_ddr_freq(ulong);
 #endif
 
 #if defined(CONFIG_4xx)