X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fmisc%2Ffsl_law.c;h=65890769ac333d641f03e7e1500959d7014a3e8e;hb=b5d58d8500bfb918c7fec56f241e6ee1078c2be0;hp=48ece4f090b8c2af5e9705529ad22fafa43f7de1;hpb=cdeb62e20d94005f2e80604fda03b498c3a6f704;p=u-boot

diff --git a/drivers/misc/fsl_law.c b/drivers/misc/fsl_law.c
index 48ece4f090..65890769ac 100644
--- a/drivers/misc/fsl_law.c
+++ b/drivers/misc/fsl_law.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2008 Freescale Semiconductor, Inc.
+ * Copyright 2008-2010 Freescale Semiconductor, Inc.
  *
  * (C) Copyright 2000
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
@@ -29,34 +29,104 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#define LAWAR_EN	0x80000000
 /* number of LAWs in the hw implementation */
 #if defined(CONFIG_MPC8540) || defined(CONFIG_MPC8541) || \
     defined(CONFIG_MPC8560) || defined(CONFIG_MPC8555)
 #define FSL_HW_NUM_LAWS 8
 #elif defined(CONFIG_MPC8548) || defined(CONFIG_MPC8544) || \
-      defined(CONFIG_MPC8568) || \
+      defined(CONFIG_MPC8568) || defined(CONFIG_MPC8569) || \
       defined(CONFIG_MPC8641) || defined(CONFIG_MPC8610)
 #define FSL_HW_NUM_LAWS 10
-#elif defined(CONFIG_MPC8572)
+#elif defined(CONFIG_MPC8536) || defined(CONFIG_MPC8572) || \
+      defined(CONFIG_P1011) || defined(CONFIG_P1020) || \
+      defined(CONFIG_P1012) || defined(CONFIG_P1021) || \
+      defined(CONFIG_P1013) || defined(CONFIG_P1022) || \
+      defined(CONFIG_P2010) || defined(CONFIG_P2020)
 #define FSL_HW_NUM_LAWS 12
+#elif defined(CONFIG_PPC_P3041) || defined(CONFIG_PPC_P4080) || \
+      defined(CONFIG_PPC_P5020)
+#define FSL_HW_NUM_LAWS 32
 #else
 #error FSL_HW_NUM_LAWS not defined for this platform
 #endif
 
-void set_law(u8 idx, phys_addr_t addr, enum law_size sz, enum law_trgt_if id)
+#ifdef CONFIG_FSL_CORENET
+#define LAW_BASE (CONFIG_SYS_FSL_CORENET_CCM_ADDR)
+#define LAWAR_ADDR(x) (&((ccsr_local_t *)LAW_BASE)->law[x].lawar)
+#define LAWBARH_ADDR(x) (&((ccsr_local_t *)LAW_BASE)->law[x].lawbarh)
+#define LAWBARL_ADDR(x) (&((ccsr_local_t *)LAW_BASE)->law[x].lawbarl)
+#define LAWBAR_SHIFT 0
+#else
+#define LAW_BASE (CONFIG_SYS_IMMR + 0xc08)
+#define LAWAR_ADDR(x) ((u32 *)LAW_BASE + 8 * x + 2)
+#define LAWBAR_ADDR(x) ((u32 *)LAW_BASE + 8 * x)
+#define LAWBAR_SHIFT 12
+#endif
+
+
+static inline phys_addr_t get_law_base_addr(int idx)
 {
-	volatile u32 *base = (volatile u32 *)(CFG_IMMR + 0xc08);
-	volatile u32 *lawbar = base + 8 * idx;
-	volatile u32 *lawar = base + 8 * idx + 2;
+#ifdef CONFIG_FSL_CORENET
+	return (phys_addr_t)
+		((u64)in_be32(LAWBARH_ADDR(idx)) << 32) |
+		in_be32(LAWBARL_ADDR(idx));
+#else
+	return (phys_addr_t)in_be32(LAWBAR_ADDR(idx)) << LAWBAR_SHIFT;
+#endif
+}
 
+static inline void set_law_base_addr(int idx, phys_addr_t addr)
+{
+#ifdef CONFIG_FSL_CORENET
+	out_be32(LAWBARL_ADDR(idx), addr & 0xffffffff);
+	out_be32(LAWBARH_ADDR(idx), (u64)addr >> 32);
+#else
+	out_be32(LAWBAR_ADDR(idx), addr >> LAWBAR_SHIFT);
+#endif
+}
+
+void set_law(u8 idx, phys_addr_t addr, enum law_size sz, enum law_trgt_if id)
+{
 	gd->used_laws |= (1 << idx);
 
-	out_be32(lawbar, addr >> 12);
-	out_be32(lawar, LAWAR_EN | ((u32)id << 20) | (u32)sz);
+	out_be32(LAWAR_ADDR(idx), 0);
+	set_law_base_addr(idx, addr);
+	out_be32(LAWAR_ADDR(idx), LAW_EN | ((u32)id << 20) | (u32)sz);
 
-	return ;
+	/* Read back so that we sync the writes */
+	in_be32(LAWAR_ADDR(idx));
+}
+
+void disable_law(u8 idx)
+{
+	gd->used_laws &= ~(1 << idx);
+
+	out_be32(LAWAR_ADDR(idx), 0);
+	set_law_base_addr(idx, 0);
+
+	/* Read back so that we sync the writes */
+	in_be32(LAWAR_ADDR(idx));
+
+	return;
+}
+
+#ifndef CONFIG_NAND_SPL
+static int get_law_entry(u8 i, struct law_entry *e)
+{
+	u32 lawar;
+
+	lawar = in_be32(LAWAR_ADDR(i));
+
+	if (!(lawar & LAW_EN))
+		return 0;
+
+	e->addr = get_law_base_addr(i);
+	e->size = lawar & 0x3f;
+	e->trgt_id = (lawar >> 20) & 0xff;
+
+	return 1;
 }
+#endif
 
 int set_next_law(phys_addr_t addr, enum law_size sz, enum law_trgt_if id)
 {
@@ -70,6 +140,7 @@ int set_next_law(phys_addr_t addr, enum law_size sz, enum law_trgt_if id)
 	return idx;
 }
 
+#ifndef CONFIG_NAND_SPL
 int set_last_law(phys_addr_t addr, enum law_size sz, enum law_trgt_if id)
 {
 	u32 idx;
@@ -89,43 +160,110 @@ int set_last_law(phys_addr_t addr, enum law_size sz, enum law_trgt_if id)
 	return idx;
 }
 
-void disable_law(u8 idx)
+struct law_entry find_law(phys_addr_t addr)
 {
-	volatile u32 *base = (volatile u32 *)(CFG_IMMR + 0xc08);
-	volatile u32 *lawbar = base + 8 * idx;
-	volatile u32 *lawar = base + 8 * idx + 2;
+	struct law_entry entry;
+	int i;
 
-	gd->used_laws &= ~(1 << idx);
+	entry.index = -1;
+	entry.addr = 0;
+	entry.size = 0;
+	entry.trgt_id = 0;
 
-	out_be32(lawar, 0);
-	out_be32(lawbar, 0);
+	for (i = 0; i < FSL_HW_NUM_LAWS; i++) {
+		u64 upper;
 
-	return;
+		if (!get_law_entry(i, &entry))
+			continue;
+
+		upper = entry.addr + (2ull << entry.size);
+		if ((addr >= entry.addr) && (addr < upper)) {
+			entry.index = i;
+			break;
+		}
+	}
+
+	return entry;
 }
 
 void print_laws(void)
 {
-	volatile u32 *base = (volatile u32 *)(CFG_IMMR + 0xc08);
-	volatile u32 *lawbar = base;
-	volatile u32 *lawar = base + 2;
 	int i;
+	u32 lawar;
 
 	printf("\nLocal Access Window Configuration\n");
-	for(i = 0; i < FSL_HW_NUM_LAWS; i++) {
-		printf("\tLAWBAR%d : 0x%08x, LAWAR%d : 0x%08x\n",
-		       i, in_be32(lawbar), i, in_be32(lawar));
-		lawbar += 8;
-		lawar += 8;
+	for (i = 0; i < FSL_HW_NUM_LAWS; i++) {
+		lawar = in_be32(LAWAR_ADDR(i));
+#ifdef CONFIG_FSL_CORENET
+		printf("LAWBARH%02d: 0x%08x LAWBARL%02d: 0x%08x",
+		       i, in_be32(LAWBARH_ADDR(i)),
+		       i, in_be32(LAWBARL_ADDR(i)));
+#else
+		printf("LAWBAR%02d: 0x%08x", i, in_be32(LAWBAR_ADDR(i)));
+#endif
+		printf(" LAWAR0x%02d: 0x%08x\n", i, lawar);
+		printf("\t(EN: %d TGT: 0x%02x SIZE: ",
+		       (lawar & LAW_EN) ? 1 : 0, (lawar >> 20) & 0xff);
+		print_size(lawar_size(lawar), ")\n");
 	}
 
 	return;
 }
 
+/* use up to 2 LAWs for DDR, used the last available LAWs */
+int set_ddr_laws(u64 start, u64 sz, enum law_trgt_if id)
+{
+	u64 start_align, law_sz;
+	int law_sz_enc;
+
+	if (start == 0)
+		start_align = 1ull << (LAW_SIZE_32G + 1);
+	else
+		start_align = 1ull << (ffs64(start) - 1);
+	law_sz = min(start_align, sz);
+	law_sz_enc = __ilog2_u64(law_sz) - 1;
+
+	if (set_last_law(start, law_sz_enc, id) < 0)
+		return -1;
+
+	/* recalculate size based on what was actually covered by the law */
+	law_sz = 1ull << __ilog2_u64(law_sz);
+
+	/* do we still have anything to map */
+	sz = sz - law_sz;
+	if (sz) {
+		start += law_sz;
+
+		start_align = 1ull << (ffs64(start) - 1);
+		law_sz = min(start_align, sz);
+		law_sz_enc = __ilog2_u64(law_sz) - 1;
+
+		if (set_last_law(start, law_sz_enc, id) < 0)
+			return -1;
+	} else {
+		return 0;
+	}
+
+	/* do we still have anything to map */
+	sz = sz - law_sz;
+	if (sz)
+		return 1;
+
+	return 0;
+}
+#endif
+
 void init_laws(void)
 {
 	int i;
 
+#if FSL_HW_NUM_LAWS < 32
 	gd->used_laws = ~((1 << FSL_HW_NUM_LAWS) - 1);
+#elif FSL_HW_NUM_LAWS == 32
+	gd->used_laws = 0;
+#else
+#error FSL_HW_NUM_LAWS can not be greater than 32 w/o code changes
+#endif
 
 	for (i = 0; i < num_law_entries; i++) {
 		if (law_table[i].index == -1)