plat: marvell: Add common ARMADA platform components
Add common Marvell ARMADA platform components.
This patch also includes common components for Marvell
ARMADA 8K platforms.
Change-Id: I42192fdc6525a42e46b3ac2ad63c83db9bcbfeaf
Signed-off-by: Hanna Hawa <hannah@marvell.com>
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
diff --git a/plat/marvell/common/marvell_ddr_info.c b/plat/marvell/common/marvell_ddr_info.c
new file mode 100644
index 0000000..68bff99
--- /dev/null
+++ b/plat/marvell/common/marvell_ddr_info.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2018 Marvell International Ltd.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ * https://spdx.org/licenses
+ */
+
+#include <debug.h>
+#include <platform_def.h>
+#include <ddr_info.h>
+#include <mmio.h>
+
+#define DRAM_CH0_MMAP_LOW_REG(iface, cs, base) \
+ (base + DRAM_CH0_MMAP_LOW_OFFSET + (iface) * 0x10000 + (cs) * 0x8)
+#define DRAM_CH0_MMAP_HIGH_REG(iface, cs, base) \
+ (DRAM_CH0_MMAP_LOW_REG(iface, cs, base) + 4)
+#define DRAM_CS_VALID_ENABLED_MASK 0x1
+#define DRAM_AREA_LENGTH_OFFS 16
+#define DRAM_AREA_LENGTH_MASK (0x1f << DRAM_AREA_LENGTH_OFFS)
+#define DRAM_START_ADDRESS_L_OFFS 23
+#define DRAM_START_ADDRESS_L_MASK \
+ (0x1ff << DRAM_START_ADDRESS_L_OFFS)
+#define DRAM_START_ADDR_HTOL_OFFS 32
+
+#define DRAM_MAX_CS_NUM 2
+
+#define DRAM_CS_ENABLED(iface, cs, base) \
+ (mmio_read_32(DRAM_CH0_MMAP_LOW_REG(iface, cs, base)) & \
+ DRAM_CS_VALID_ENABLED_MASK)
+#define GET_DRAM_REGION_SIZE_CODE(iface, cs, base) \
+ (mmio_read_32(DRAM_CH0_MMAP_LOW_REG(iface, cs, base)) & \
+ DRAM_AREA_LENGTH_MASK) >> DRAM_AREA_LENGTH_OFFS
+
+/* Mapping between DDR area length and real DDR size is specific and looks like
+ * bellow:
+ * 0 => 384 MB
+ * 1 => 768 MB
+ * 2 => 1536 MB
+ * 3 => 3 GB
+ * 4 => 6 GB
+ *
+ * 7 => 8 MB
+ * 8 => 16 MB
+ * 9 => 32 MB
+ * 10 => 64 MB
+ * 11 => 128 MB
+ * 12 => 256 MB
+ * 13 => 512 MB
+ * 14 => 1 GB
+ * 15 => 2 GB
+ * 16 => 4 GB
+ * 17 => 8 GB
+ * 18 => 16 GB
+ * 19 => 32 GB
+ * 20 => 64 GB
+ * 21 => 128 GB
+ * 22 => 256 GB
+ * 23 => 512 GB
+ * 24 => 1 TB
+ * 25 => 2 TB
+ * 26 => 4 TB
+ *
+ * to calculate real size we need to use two different formulas:
+ * -- GET_DRAM_REGION_SIZE_ODD for values 0-4 (DRAM_REGION_SIZE_ODD)
+ * -- GET_DRAM_REGION_SIZE_EVEN for values 7-26 (DRAM_REGION_SIZE_EVEN)
+ * using mentioned formulas we cover whole mapping between "Area length" value
+ * and real size (see above mapping).
+ */
+#define DRAM_REGION_SIZE_EVEN(C) (((C) >= 7) && ((C) <= 26))
+#define GET_DRAM_REGION_SIZE_EVEN(C) ((uint64_t)1 << ((C) + 16))
+#define DRAM_REGION_SIZE_ODD(C) ((C) <= 4)
+#define GET_DRAM_REGION_SIZE_ODD(C) ((uint64_t)0x18000000 << (C))
+
+
+uint64_t mvebu_get_dram_size(uint64_t ap_base_addr)
+{
+ uint64_t mem_size = 0;
+ uint8_t region_code;
+ uint8_t cs, iface;
+
+ for (iface = 0; iface < DRAM_MAX_IFACE; iface++) {
+ for (cs = 0; cs < DRAM_MAX_CS_NUM; cs++) {
+
+ /* Exit loop on first disabled DRAM CS */
+ if (!DRAM_CS_ENABLED(iface, cs, ap_base_addr))
+ break;
+
+ /* Decode area length for current CS
+ * from register value
+ */
+ region_code =
+ GET_DRAM_REGION_SIZE_CODE(iface, cs,
+ ap_base_addr);
+
+ if (DRAM_REGION_SIZE_EVEN(region_code)) {
+ mem_size +=
+ GET_DRAM_REGION_SIZE_EVEN(region_code);
+ } else if (DRAM_REGION_SIZE_ODD(region_code)) {
+ mem_size +=
+ GET_DRAM_REGION_SIZE_ODD(region_code);
+ } else {
+ WARN("%s: Invalid mem region (0x%x) CS#%d\n",
+ __func__, region_code, cs);
+ return 0;
+ }
+ }
+ }
+
+ return mem_size;
+}