zynqmp works

1 files changed, 54 insertions, 102 deletions

diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c
index a23c38acd9..9136c46cc7 100644
--- a/board/xilinx/zynqmp/zynqmp.c
+++ b/board/xilinx/zynqmp/zynqmp.c
@@ -180,123 +180,75 @@ int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
 }
 
 #if !defined(CONFIG_SYS_SDRAM_BASE) && !defined(CONFIG_SYS_SDRAM_SIZE)
-/*
- * fdt_get_reg - Fill buffer by information from DT
- */
-static phys_size_t fdt_get_reg(const void *fdt, int nodeoffset, void *buf,
-			       const u32 *cell, int n)
+static const void *get_memory_reg_prop(const void *fdt, int *lenp)
 {
-	int i = 0, b, banks;
-	int parent_offset = fdt_parent_offset(fdt, nodeoffset);
-	int address_cells = fdt_address_cells(fdt, parent_offset);
-	int size_cells = fdt_size_cells(fdt, parent_offset);
-	char *p = buf;
-	u64 val;
-	u64 vals;
-
-	debug("%s: addr_cells=%x, size_cell=%x, buf=%p, cell=%p\n",
-	      __func__, address_cells, size_cells, buf, cell);
-
-	/* Check memory bank setup */
-	banks = n % (address_cells + size_cells);
-	if (banks)
-		panic("Incorrect memory setup cells=%d, ac=%d, sc=%d\n",
-		      n, address_cells, size_cells);
-
-	banks = n / (address_cells + size_cells);
-
-	for (b = 0; b < banks; b++) {
-		debug("%s: Bank #%d:\n", __func__, b);
-		if (address_cells == 2) {
-			val = cell[i + 1];
-			val <<= 32;
-			val |= cell[i];
-			val = fdt64_to_cpu(val);
-			debug("%s: addr64=%llx, ptr=%p, cell=%p\n",
-			      __func__, val, p, &cell[i]);
-			*(phys_addr_t *)p = val;
-		} else {
-			debug("%s: addr32=%x, ptr=%p\n",
-			      __func__, fdt32_to_cpu(cell[i]), p);
-			*(phys_addr_t *)p = fdt32_to_cpu(cell[i]);
-		}
-		p += sizeof(phys_addr_t);
-		i += address_cells;
-
-		debug("%s: pa=%p, i=%x, size=%zu\n", __func__, p, i,
-		      sizeof(phys_addr_t));
-
-		if (size_cells == 2) {
-			vals = cell[i + 1];
-			vals <<= 32;
-			vals |= cell[i];
-			vals = fdt64_to_cpu(vals);
-
-			debug("%s: size64=%llx, ptr=%p, cell=%p\n",
-			      __func__, vals, p, &cell[i]);
-			*(phys_size_t *)p = vals;
-		} else {
-			debug("%s: size32=%x, ptr=%p\n",
-			      __func__, fdt32_to_cpu(cell[i]), p);
-			*(phys_size_t *)p = fdt32_to_cpu(cell[i]);
-		}
-		p += sizeof(phys_size_t);
-		i += size_cells;
-
-		debug("%s: ps=%p, i=%x, size=%zu\n",
-		      __func__, p, i, sizeof(phys_size_t));
-	}
+	int offset;
 
-	/* Return the first address size */
-	return *(phys_size_t *)((char *)buf + sizeof(phys_addr_t));
-}
+	offset = fdt_path_offset(fdt, "/memory");
+	if (offset < 0)
+		return NULL;
 
-#define FDT_REG_SIZE  sizeof(u32)
-/* Temp location for sharing data for storing */
-/* Up to 64-bit address + 64-bit size */
-static u8 tmp[CONFIG_NR_DRAM_BANKS * 16];
+	return fdt_getprop(fdt, offset, "reg", lenp);
+}
 
-void dram_init_banksize(void)
+int dram_init(void)
 {
-	int bank;
+	const void *fdt = gd->fdt_blob;
+	const fdt32_t *val;
+	int ac, sc, len;
+
+	ac = fdt_address_cells(fdt, 0);
+	sc = fdt_size_cells(fdt, 0);
+	if (ac < 0 || sc < 1 || sc > 2) {
+		printf("invalid address/size cells\n");
+		return -EINVAL;
+	}
 
-	memcpy(&gd->bd->bi_dram[0], &tmp, sizeof(tmp));
+	val = get_memory_reg_prop(fdt, &len);
+	if (len / sizeof(*val) < ac + sc)
+		return -EINVAL;
 
-	for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
-		debug("Bank #%d: start %llx\n", bank,
-		      (unsigned long long)gd->bd->bi_dram[bank].start);
-		debug("Bank #%d: size %llx\n", bank,
-		      (unsigned long long)gd->bd->bi_dram[bank].size);
-	}
-}
+	val += ac;
 
-int dram_init(void)
-{
-	int node, len;
-	const void *blob = gd->fdt_blob;
-	const u32 *cell;
+	gd->ram_size = fdtdec_get_number(val, sc);
 
-	memset(&tmp, 0, sizeof(tmp));
+	debug("DRAM size = %08lx\n", (unsigned long)gd->ram_size);
 
-	/* find or create "/memory" node. */
-	node = fdt_subnode_offset(blob, 0, "memory");
-	if (node < 0) {
-		printf("%s: Can't get memory node\n", __func__);
-		return node;
-	}
+	return 0;
+}
 
-	/* Get pointer to cells and lenght of it */
-	cell = fdt_getprop(blob, node, "reg", &len);
-	if (!cell) {
-		printf("%s: Can't get reg property\n", __func__);
-		return -1;
+void dram_init_banksize(void)
+{
+	const void *fdt = gd->fdt_blob;
+	const fdt32_t *val;
+	int ac, sc, cells, len, i;
+
+	val = get_memory_reg_prop(fdt, &len);
+	if (len < 0)
+		return;
+
+	ac = fdt_address_cells(fdt, 0);
+	sc = fdt_size_cells(fdt, 0);
+	if (ac < 1 || sc > 2 || sc < 1 || sc > 2) {
+		printf("invalid address/size cells\n");
+		return;
 	}
 
-	gd->ram_size = fdt_get_reg(blob, node, &tmp, cell, len / FDT_REG_SIZE);
+	cells = ac + sc;
 
-	debug("%s: Initial DRAM size %llx\n", __func__, (u64)gd->ram_size);
+	len /= sizeof(*val);
 
-	return 0;
+	for (i = 0; i < CONFIG_NR_DRAM_BANKS && len >= cells;
+	     i++, len -= cells) {
+		gd->bd->bi_dram[i].start = fdtdec_get_number(val, ac);
+		val += ac;
+		gd->bd->bi_dram[i].size = fdtdec_get_number(val, sc);
+		val += sc;
+
+		debug("DRAM bank %d: start = %08lx, size = %08lx\n",
+		      i, (unsigned long)gd->bd->bi_dram[i].start,
+		      (unsigned long)gd->bd->bi_dram[i].size);
+	}
 }
 #else
 int dram_init(void)