1 files changed, 98 insertions, 0 deletions
diff --git a/board/kontron/sl28/ddr.c b/board/kontron/sl28/ddr.c
new file mode 100644
index 0000000000..d111b6d4c3
--- /dev/null
+++ b/board/kontron/sl28/ddr.c
@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <common.h>
+#include <asm/io.h>
+#include <fsl_ddr_sdram.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define DCFG_GPPORCR1 0x20
+
+#define GPPORCR1_MEM_MASK		(0x7 << 5)
+#define GPPORCR1_MEM_512MB_CS0		(0x0 << 5)
+#define GPPORCR1_MEM_1GB_CS0		(0x1 << 5)
+#define GPPORCR1_MEM_2GB_CS0		(0x2 << 5)
+#define GPPORCR1_MEM_4GB_CS0_1		(0x3 << 5)
+#define GPPORCR1_MEM_4GB_CS0_2		(0x4 << 5)
+#define GPPORCR1_MEM_8GB_CS0_1_2_3	(0x5 << 5)
+#define GPPORCR1_MEM_8GB_CS0_1		(0x6 << 5)
+
+static fsl_ddr_cfg_regs_t __maybe_unused ddr_cfg_regs = {
+	.cs[0].bnds		= 0x0000007f,
+	.cs[0].config		= 0x80044402,
+	.cs[1].bnds		= 0x008000ff,
+	.cs[1].config		= 0x80004402,
+
+	.timing_cfg_0		= 0x9011010c,
+	.timing_cfg_3		= 0x010c1000,
+	.timing_cfg_1		= 0xbcb48c66,
+	.timing_cfg_2		= 0x0fc0d118,
+	.ddr_sdram_cfg		= 0xe70c000c,
+	.ddr_sdram_cfg_2	= 0x24401111,
+	.ddr_sdram_mode		= 0x00441c70,
+	.ddr_sdram_mode_3	= 0x00001c70,
+	.ddr_sdram_mode_5	= 0x00001c70,
+	.ddr_sdram_mode_7	= 0x00001c70,
+	.ddr_sdram_mode_2	= 0x00180000,
+	.ddr_sdram_mode_4	= 0x00180000,
+	.ddr_sdram_mode_6	= 0x00180000,
+	.ddr_sdram_mode_8	= 0x00180000,
+
+	.ddr_sdram_interval	= 0x0c30030c,
+	.ddr_data_init		= 0xdeadbeef,
+
+	.ddr_sdram_clk_cntl	= 0x02400000,
+
+	.timing_cfg_4		= 0x00000001,
+	.timing_cfg_5		= 0x04401400,
+
+	.ddr_zq_cntl		= 0x89080600,
+	.ddr_wrlvl_cntl		= 0x8675f606,
+	.ddr_wrlvl_cntl_2	= 0x04080700,
+	.ddr_wrlvl_cntl_3	= 0x00000009,
+
+	.ddr_cdr1		= 0x80040000,
+	.ddr_cdr2		= 0x0000bc01,
+};
+
+int fsl_initdram(void)
+{
+	u32 gpporcr1 = in_le32(DCFG_BASE + DCFG_GPPORCR1);
+	phys_size_t dram_size;
+
+	switch (gpporcr1 & GPPORCR1_MEM_MASK) {
+	case GPPORCR1_MEM_2GB_CS0:
+		dram_size = 0x80000000;
+		ddr_cfg_regs.cs[1].bnds = 0;
+		ddr_cfg_regs.cs[1].config = 0;
+		ddr_cfg_regs.cs[1].config_2 = 0;
+		break;
+	case GPPORCR1_MEM_4GB_CS0_1:
+		dram_size = 0x100000000ULL;
+		break;
+	case GPPORCR1_MEM_512MB_CS0:
+		dram_size = 0x20000000;
+		fallthrough; /* for now */
+	case GPPORCR1_MEM_1GB_CS0:
+		dram_size = 0x40000000;
+		fallthrough; /* for now */
+	case GPPORCR1_MEM_4GB_CS0_2:
+		dram_size = 0x100000000ULL;
+		fallthrough; /* for now */
+	case GPPORCR1_MEM_8GB_CS0_1:
+	case GPPORCR1_MEM_8GB_CS0_1_2_3:
+		dram_size = 0x200000000ULL;
+		fallthrough; /* for now */
+	default:
+		panic("Unsupported memory configuration (%08x)\n",
+		      gpporcr1 & GPPORCR1_MEM_MASK);
+		break;
+	}
+
+	if (!IS_ENABLED(CONFIG_SPL) || IS_ENABLED(CONFIG_SPL_BUILD))
+		fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0, 0);
+
+	gd->ram_size = dram_size;
+
+	return 0;
+}