Merge branch 'master' of git://git.denx.de/u-boot-fsl-qoriq

1 files changed, 221 insertions, 10 deletions

diff --git a/arch/arm/cpu/armv7/ls102xa/cpu.c b/arch/arm/cpu/armv7/ls102xa/cpu.c
index ce2d92f5a6..1a640bbb9c 100644
--- a/arch/arm/cpu/armv7/ls102xa/cpu.c
+++ b/arch/arm/cpu/armv7/ls102xa/cpu.c
@@ -8,14 +8,214 @@
 #include <asm/arch/clock.h>
 #include <asm/io.h>
 #include <asm/arch/immap_ls102xa.h>
+#include <asm/cache.h>
+#include <asm/system.h>
 #include <tsec.h>
 #include <netdev.h>
 #include <fsl_esdhc.h>
 
 #include "fsl_epu.h"
 
+#define DCSR_RCPM2_BLOCK_OFFSET	0x223000
+#define DCSR_RCPM2_CPMFSMCR0	0x400
+#define DCSR_RCPM2_CPMFSMSR0	0x404
+#define DCSR_RCPM2_CPMFSMCR1	0x414
+#define DCSR_RCPM2_CPMFSMSR1	0x418
+#define CPMFSMSR_FSM_STATE_MASK	0x7f
+
 DECLARE_GLOBAL_DATA_PTR;
 
+#ifndef CONFIG_SYS_DCACHE_OFF
+
+/*
+ * Bit[1] of the descriptor indicates the descriptor type,
+ * and bit[0] indicates whether the descriptor is valid.
+ */
+#define PMD_TYPE_TABLE		0x3
+#define PMD_TYPE_SECT		0x1
+
+/* AttrIndx[2:0] */
+#define PMD_ATTRINDX(t)		((t) << 2)
+
+/* Section */
+#define PMD_SECT_AF		(1 << 10)
+
+#define BLOCK_SIZE_L1		(1UL << 30)
+#define BLOCK_SIZE_L2		(1UL << 21)
+
+/* TTBCR flags */
+#define TTBCR_EAE		(1 << 31)
+#define TTBCR_T0SZ(x)		((x) << 0)
+#define TTBCR_T1SZ(x)		((x) << 16)
+#define TTBCR_USING_TTBR0	(TTBCR_T0SZ(0) | TTBCR_T1SZ(0))
+#define TTBCR_IRGN0_NC		(0 << 8)
+#define TTBCR_IRGN0_WBWA	(1 << 8)
+#define TTBCR_IRGN0_WT		(2 << 8)
+#define TTBCR_IRGN0_WBNWA	(3 << 8)
+#define TTBCR_IRGN0_MASK	(3 << 8)
+#define TTBCR_ORGN0_NC		(0 << 10)
+#define TTBCR_ORGN0_WBWA	(1 << 10)
+#define TTBCR_ORGN0_WT		(2 << 10)
+#define TTBCR_ORGN0_WBNWA	(3 << 10)
+#define TTBCR_ORGN0_MASK	(3 << 10)
+#define TTBCR_SHARED_NON	(0 << 12)
+#define TTBCR_SHARED_OUTER	(2 << 12)
+#define TTBCR_SHARED_INNER	(3 << 12)
+#define TTBCR_EPD0		(0 << 7)
+#define TTBCR			(TTBCR_SHARED_NON | \
+				 TTBCR_ORGN0_NC	| \
+				 TTBCR_IRGN0_NC	| \
+				 TTBCR_USING_TTBR0 | \
+				 TTBCR_EAE)
+
+/*
+ * Memory region attributes for LPAE (defined in pgtable):
+ *
+ * n = AttrIndx[2:0]
+ *
+ *		              n       MAIR
+ *	UNCACHED              000     00000000
+ *	BUFFERABLE            001     01000100
+ *	DEV_WC                001     01000100
+ *	WRITETHROUGH          010     10101010
+ *	WRITEBACK             011     11101110
+ *	DEV_CACHED            011     11101110
+ *	DEV_SHARED            100     00000100
+ *	DEV_NONSHARED         100     00000100
+ *	unused                101
+ *	unused                110
+ *	WRITEALLOC            111     11111111
+ */
+#define MT_MAIR0		0xeeaa4400
+#define MT_MAIR1		0xff000004
+#define MT_STRONLY_ORDER	0
+#define MT_NORMAL_NC		1
+#define MT_DEVICE_MEM		4
+#define MT_NORMAL		7
+
+/* The phy_addr must be aligned to 4KB */
+static inline void set_pgtable(u32 *page_table, u32 index, u32 phy_addr)
+{
+	u32 value = phy_addr | PMD_TYPE_TABLE;
+
+	page_table[2 * index] = value;
+	page_table[2 * index + 1] = 0;
+}
+
+/* The phy_addr must be aligned to 4KB */
+static inline void set_pgsection(u32 *page_table, u32 index, u64 phy_addr,
+				 u32 memory_type)
+{
+	u64 value;
+
+	value = phy_addr | PMD_TYPE_SECT | PMD_SECT_AF;
+	value |= PMD_ATTRINDX(memory_type);
+	page_table[2 * index] = value & 0xFFFFFFFF;
+	page_table[2 * index + 1] = (value >> 32) & 0xFFFFFFFF;
+}
+
+/*
+ * Start MMU after DDR is available, we create MMU table in DRAM.
+ * The base address of TTLB is gd->arch.tlb_addr. We use two
+ * levels of translation tables here to cover 40-bit address space.
+ *
+ * The TTLBs are located at PHY 2G~4G.
+ *
+ * VA mapping:
+ *
+ *  -------  <---- 0GB
+ * |       |
+ * |       |
+ * |-------| <---- 0x24000000
+ * |///////|  ===> 192MB VA map for PCIe1 with offset 0x40_0000_0000
+ * |-------| <---- 0x300000000
+ * |       |
+ * |-------| <---- 0x34000000
+ * |///////|  ===> 192MB VA map for PCIe2 with offset 0x48_0000_0000
+ * |-------| <---- 0x40000000
+ * |       |
+ * |-------| <---- 0x80000000 DDR0 space start
+ * |\\\\\\\|
+ *.|\\\\\\\|  ===> 2GB VA map for 2GB DDR0 Memory space
+ * |\\\\\\\|
+ *  -------  <---- 4GB DDR0 space end
+ */
+static void mmu_setup(void)
+{
+	u32 *level0_table = (u32 *)gd->arch.tlb_addr;
+	u32 *level1_table = (u32 *)(gd->arch.tlb_addr + 0x1000);
+	u64 va_start = 0;
+	u32 reg;
+	int i;
+
+	/* Level 0 Table 2-3 are used to map DDR */
+	set_pgsection(level0_table, 3, 3 * BLOCK_SIZE_L1, MT_NORMAL);
+	set_pgsection(level0_table, 2, 2 * BLOCK_SIZE_L1, MT_NORMAL);
+	/* Level 0 Table 1 is used to map device */
+	set_pgsection(level0_table, 1, 1 * BLOCK_SIZE_L1, MT_DEVICE_MEM);
+	/* Level 0 Table 0 is used to map device including PCIe MEM */
+	set_pgtable(level0_table, 0, (u32)level1_table);
+
+	/* Level 1 has 512 entries */
+	for (i = 0; i < 512; i++) {
+		/* Mapping for PCIe 1 */
+		if (va_start >= CONFIG_SYS_PCIE1_VIRT_ADDR &&
+		    va_start < (CONFIG_SYS_PCIE1_VIRT_ADDR +
+				 CONFIG_SYS_PCIE_MMAP_SIZE))
+			set_pgsection(level1_table, i,
+				      CONFIG_SYS_PCIE1_PHYS_BASE + va_start,
+				      MT_DEVICE_MEM);
+		/* Mapping for PCIe 2 */
+		else if (va_start >= CONFIG_SYS_PCIE2_VIRT_ADDR &&
+			 va_start < (CONFIG_SYS_PCIE2_VIRT_ADDR +
+				     CONFIG_SYS_PCIE_MMAP_SIZE))
+			set_pgsection(level1_table, i,
+				      CONFIG_SYS_PCIE2_PHYS_BASE + va_start,
+				      MT_DEVICE_MEM);
+		else
+			set_pgsection(level1_table, i,
+				      va_start,
+				      MT_DEVICE_MEM);
+		va_start += BLOCK_SIZE_L2;
+	}
+
+	asm volatile("dsb sy;isb");
+	asm volatile("mcr p15, 0, %0, c2, c0, 2" /* Write RT to TTBCR */
+			: : "r" (TTBCR) : "memory");
+	asm volatile("mcrr p15, 0, %0, %1, c2" /* TTBR 0 */
+			: : "r" ((u32)level0_table), "r" (0) : "memory");
+	asm volatile("mcr p15, 0, %0, c10, c2, 0" /* write MAIR 0 */
+			: : "r" (MT_MAIR0) : "memory");
+	asm volatile("mcr p15, 0, %0, c10, c2, 1" /* write MAIR 1 */
+			: : "r" (MT_MAIR1) : "memory");
+
+	/* Set the access control to all-supervisor */
+	asm volatile("mcr p15, 0, %0, c3, c0, 0"
+		     : : "r" (~0));
+
+	/* Enable the mmu */
+	reg = get_cr();
+	set_cr(reg | CR_M);
+}
+
+/*
+ * This function is called from lib/board.c. It recreates MMU
+ * table in main memory. MMU and i/d-cache are enabled here.
+ */
+void enable_caches(void)
+{
+	/* Invalidate all TLB */
+	mmu_page_table_flush(gd->arch.tlb_addr,
+			     gd->arch.tlb_addr +  gd->arch.tlb_size);
+	/* Set up and enable mmu */
+	mmu_setup();
+
+	/* Invalidate & Enable d-cache */
+	invalidate_dcache_all();
+	set_cr(get_cr() | CR_C);
+}
+#endif /* #ifndef CONFIG_SYS_DCACHE_OFF */
+
 #if defined(CONFIG_DISPLAY_CPUINFO)
 int print_cpuinfo(void)
 {
@@ -78,16 +278,6 @@ int print_cpuinfo(void)
 }
 #endif
 
-void enable_caches(void)
-{
-#ifndef CONFIG_SYS_ICACHE_OFF
-	icache_enable();
-#endif
-#ifndef CONFIG_SYS_DCACHE_OFF
-	dcache_enable();
-#endif
-}
-
 #ifdef CONFIG_FSL_ESDHC
 int cpu_mmc_init(bd_t *bis)
 {
@@ -107,6 +297,27 @@ int cpu_eth_init(bd_t *bis)
 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);
+	u32 state;
+
+	/*
+	 * The RCPM FSM state may not be reset after power-on.
+	 * So, reset them.
+	 */
+	state = in_be32(rcpm2_base + DCSR_RCPM2_CPMFSMSR0) &
+		CPMFSMSR_FSM_STATE_MASK;
+	if (state != 0) {
+		out_be32(rcpm2_base + DCSR_RCPM2_CPMFSMCR0, 0x80);
+		out_be32(rcpm2_base + DCSR_RCPM2_CPMFSMCR0, 0x0);
+	}
+
+	state = in_be32(rcpm2_base + DCSR_RCPM2_CPMFSMSR1) &
+		CPMFSMSR_FSM_STATE_MASK;
+	if (state != 0) {
+		out_be32(rcpm2_base + DCSR_RCPM2_CPMFSMCR1, 0x80);
+		out_be32(rcpm2_base + DCSR_RCPM2_CPMFSMCR1, 0x0);
+	}
 
 	/*
 	 * After wakeup from deep sleep, Clear EPU registers