There are some functions like sdram_size_mb can be re-used for
different rockchip SoCs, just put them into common file.
Add board_get_usable_ram_top() for ram_top init base on
SDRAM_MAX_SIZE.
Signed-off-by: Kever Yang <kever.y...@rock-chips.com>
---
Changes in v2:
- add board_get_usable_ram_top()
arch/arm/include/asm/arch-rockchip/sdram_common.h | 58 ++++++++++++++++
arch/arm/mach-rockchip/Makefile | 3 +
arch/arm/mach-rockchip/sdram_common.c | 83 +++++++++++++++++++++++
include/configs/rk3188_common.h | 1 +
include/configs/rk3288_common.h | 1 +
include/configs/rk3328_common.h | 2 +-
include/configs/rk3368_common.h | 2 +
include/configs/rk3399_common.h | 1 +
8 files changed, 150 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/include/asm/arch-rockchip/sdram_common.h
create mode 100644 arch/arm/mach-rockchip/sdram_common.c
diff --git a/arch/arm/include/asm/arch-rockchip/sdram_common.h
b/arch/arm/include/asm/arch-rockchip/sdram_common.h
new file mode 100644
index 0000000..fec8586
--- /dev/null
+++ b/arch/arm/include/asm/arch-rockchip/sdram_common.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2017 Rockchip Electronics Co., Ltd.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _ASM_ARCH_SDRAM_COMMON_H
+#define _ASM_ARCH_SDRAM_COMMON_H
+/*
+ * sys_reg bitfield struct
+ * [31] row_3_4_ch1
+ * [30] row_3_4_ch0
+ * [29:28] chinfo
+ * [27] rank_ch1
+ * [26:25] col_ch1
+ * [24] bk_ch1
+ * [23:22] cs0_row_ch1
+ * [21:20] cs1_row_ch1
+ * [19:18] bw_ch1
+ * [17:16] dbw_ch1;
+ * [15:13] ddrtype
+ * [12] channelnum
+ * [11] rank_ch0
+ * [10:9] col_ch0
+ * [8] bk_ch0
+ * [7:6] cs0_row_ch0
+ * [5:4] cs1_row_ch0
+ * [3:2] bw_ch0
+ * [1:0] dbw_ch0
+*/
+#define SYS_REG_DDRTYPE_SHIFT 13
+#define SYS_REG_DDRTYPE_MASK 7
+#define SYS_REG_NUM_CH_SHIFT 12
+#define SYS_REG_NUM_CH_MASK 1
+#define SYS_REG_ROW_3_4_SHIFT(ch) (30 + (ch))
+#define SYS_REG_ROW_3_4_MASK 1
+#define SYS_REG_CHINFO_SHIFT(ch) (28 + (ch))
+#define SYS_REG_RANK_SHIFT(ch) (11 + (ch) * 16)
+#define SYS_REG_RANK_MASK 1
+#define SYS_REG_COL_SHIFT(ch) (9 + (ch) * 16)
+#define SYS_REG_COL_MASK 3
+#define SYS_REG_BK_SHIFT(ch) (8 + (ch) * 16)
+#define SYS_REG_BK_MASK 1
+#define SYS_REG_CS0_ROW_SHIFT(ch) (6 + (ch) * 16)
+#define SYS_REG_CS0_ROW_MASK 3
+#define SYS_REG_CS1_ROW_SHIFT(ch) (4 + (ch) * 16)
+#define SYS_REG_CS1_ROW_MASK 3
+#define SYS_REG_BW_SHIFT(ch) (2 + (ch) * 16)
+#define SYS_REG_BW_MASK 3
+#define SYS_REG_DBW_SHIFT(ch) ((ch) * 16)
+#define SYS_REG_DBW_MASK 3
+
+/* Get sdram size decode from reg */
+size_t rockchip_sdram_size(phys_addr_t reg);
+
+/* Called by U-Boot board_init_r for Rockchip SoCs */
+int dram_init(void);
+#endif
diff --git a/arch/arm/mach-rockchip/Makefile b/arch/arm/mach-rockchip/Makefile
index 71dd66d..cb8d3ef 100644
--- a/arch/arm/mach-rockchip/Makefile
+++ b/arch/arm/mach-rockchip/Makefile
@@ -21,6 +21,9 @@ obj-$(CONFIG_ROCKCHIP_RK3188) += rk3188-board.o
obj-$(CONFIG_ROCKCHIP_RK322X) += rk322x-board.o
obj-$(CONFIG_ROCKCHIP_RK3288) += rk3288-board.o
obj-$(CONFIG_ROCKCHIP_RK3036) += rk3036-board.o
+ifdef CONFIG_RAM
+obj-y += sdram_common.o
+endif
endif
ifndef CONFIG_ARM64
obj-y += rk_timer.o
diff --git a/arch/arm/mach-rockchip/sdram_common.c
b/arch/arm/mach-rockchip/sdram_common.c
new file mode 100644
index 0000000..76dbdc8
--- /dev/null
+++ b/arch/arm/mach-rockchip/sdram_common.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2017 Rockchip Electronics Co., Ltd.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <ram.h>
+#include <asm/io.h>
+#include <asm/arch/sdram_common.h>
+#include <dm/uclass-internal.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+size_t rockchip_sdram_size(phys_addr_t reg)
+{
+ u32 rank, col, bk, cs0_row, cs1_row, bw, row_3_4;
+ size_t chipsize_mb = 0;
+ size_t size_mb = 0;
+ u32 ch;
+
+ u32 sys_reg = readl(reg);
+ u32 ch_num = 1 + ((sys_reg >> SYS_REG_NUM_CH_SHIFT)
+ & SYS_REG_NUM_CH_MASK);
+
+ debug("%s %x %x\n", __func__, (u32)reg, sys_reg);
+ for (ch = 0; ch < ch_num; ch++) {
+ rank = 1 + (sys_reg >> SYS_REG_RANK_SHIFT(ch) &
+ SYS_REG_RANK_MASK);
+ col = 9 + (sys_reg >> SYS_REG_COL_SHIFT(ch) & SYS_REG_COL_MASK);
+ bk = 3 - ((sys_reg >> SYS_REG_BK_SHIFT(ch)) & SYS_REG_BK_MASK);
+ cs0_row = 13 + (sys_reg >> SYS_REG_CS0_ROW_SHIFT(ch) &
+ SYS_REG_CS0_ROW_MASK);
+ cs1_row = 13 + (sys_reg >> SYS_REG_CS1_ROW_SHIFT(ch) &
+ SYS_REG_CS1_ROW_MASK);
+ bw = (2 >> ((sys_reg >> SYS_REG_BW_SHIFT(ch)) &
+ SYS_REG_BW_MASK));
+ row_3_4 = sys_reg >> SYS_REG_ROW_3_4_SHIFT(ch) &
+ SYS_REG_ROW_3_4_MASK;
+
+ chipsize_mb = (1 << (cs0_row + col + bk + bw - 20));
+
+ if (rank > 1)
+ chipsize_mb += chipsize_mb >> (cs0_row - cs1_row);
+ if (row_3_4)
+ chipsize_mb = chipsize_mb * 3 / 4;
+ size_mb += chipsize_mb;
+ debug("rank %d col %d bk %d cs0_row %d bw %d row_3_4 %d\n",
+ rank, col, bk, cs0_row, bw, row_3_4);
+ }
+
+ return (size_t)size_mb << 20;
+}
+
+int dram_init(void)
+{
+ struct ram_info ram;
+ struct udevice *dev;
+ int ret;
+
+ ret = uclass_get_device(UCLASS_RAM, 0, &dev);
+ if (ret) {
+ debug("DRAM init failed: %d\n", ret);
+ return ret;
+ }
+ ret = ram_get_info(dev, &ram);
+ if (ret) {
+ debug("Cannot get DRAM size: %d\n", ret);
+ return ret;
+ }
+ gd->ram_size = ram.size;
+ debug("SDRAM base=%lx, size=%lx\n",
+ (unsigned long)ram.base, (unsigned long)ram.size);
+
+ return 0;
+}
+
+ulong board_get_usable_ram_top(ulong total_size)
+{
+ unsigned long top = CONFIG_SYS_SDRAM_BASE + SDRAM_MAX_SIZE;
+
+ return (gd->ram_top > top) ? top : gd->ram_top;
+}
diff --git a/include/configs/rk3188_common.h b/include/configs/rk3188_common.h
index a1e0eb7..7f57dd3 100644
--- a/include/configs/rk3188_common.h
+++ b/include/configs/rk3188_common.h
@@ -64,6 +64,7 @@
#define CONFIG_SYS_SDRAM_BASE 0x60000000
#define CONFIG_NR_DRAM_BANKS 1
#define SDRAM_BANK_SIZE (2UL << 30)
+#define SDRAM_MAX_SIZE 0x80000000
#define CONFIG_SPI_FLASH
#define CONFIG_SPI
diff --git a/include/configs/rk3288_common.h b/include/configs/rk3288_common.h
index ecf2675..7d6ef41 100644
--- a/include/configs/rk3288_common.h
+++ b/include/configs/rk3288_common.h
@@ -48,6 +48,7 @@
#define CONFIG_SYS_SDRAM_BASE 0
#define CONFIG_NR_DRAM_BANKS 1
#define SDRAM_BANK_SIZE (2UL << 30)
+#define SDRAM_MAX_SIZE 0xfe000000
#define CONFIG_SPI_FLASH
#define CONFIG_SPI
diff --git a/include/configs/rk3328_common.h b/include/configs/rk3328_common.h
index 5a06244..7f9f0c5 100644
--- a/include/configs/rk3328_common.h
+++ b/include/configs/rk3328_common.h
@@ -9,7 +9,6 @@
#include "rockchip-common.h"
-#define CONFIG_NR_DRAM_BANKS 1
#define CONFIG_ENV_SIZE 0x2000
#define CONFIG_SYS_MAXARGS 16
#define CONFIG_SYS_MALLOC_LEN (32 << 20)
@@ -37,6 +36,7 @@
#define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION 1
#define CONFIG_SYS_SDRAM_BASE 0
#define CONFIG_NR_DRAM_BANKS 1
+#define SDRAM_MAX_SIZE 0xff000000
#define CONFIG_SPI_FLASH
#define CONFIG_SPI
diff --git a/include/configs/rk3368_common.h b/include/configs/rk3368_common.h
index 8ebf232..b0c858c 100644
--- a/include/configs/rk3368_common.h
+++ b/include/configs/rk3368_common.h
@@ -12,6 +12,8 @@
#include <asm/arch/hardware.h>
#include <linux/sizes.h>
+#define CONFIG_SYS_SDRAM_BASE 0
+#define SDRAM_MAX_SIZE 0xff000000
#define CONFIG_NR_DRAM_BANKS 1
#define CONFIG_SYS_MAXARGS 16
#define CONFIG_BAUDRATE 115200
diff --git a/include/configs/rk3399_common.h b/include/configs/rk3399_common.h
index 7a8a442..1ef6b92 100644
--- a/include/configs/rk3399_common.h
+++ b/include/configs/rk3399_common.h
@@ -51,6 +51,7 @@
/* FAT sd card locations. */
#define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION 1
#define CONFIG_SYS_SDRAM_BASE 0
+#define SDRAM_MAX_SIZE 0xf8000000
#define CONFIG_NR_DRAM_BANKS 1
#define CONFIG_SF_DEFAULT_SPEED 20000000
--
1.9.1
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