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Since we have new DRAM type and to support different DRAM size in different CS, we need more bits, so introduce sys_reg3 to record the info. Note that the info in sys_reg3 is extension to sys_reg2 and the info in sys_reg2 is the same as before. We define the DRAM_INFO with sys_reg3 as VERSION2. All the ENC macro are moved to sdram_common.h since the sdram.c only need to do the info decode. Signed-off-by: YouMin Chen <cym@rock-chips.com> Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2017 Rockchip Electronics Co., Ltd.
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*/
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#ifndef _ASM_ARCH_SDRAM_H
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#define _ASM_ARCH_SDRAM_H
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enum {
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DDR4 = 0,
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DDR3 = 0x3,
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LPDDR2 = 0x5,
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LPDDR3 = 0x6,
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LPDDR4 = 0x7,
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UNUSED = 0xFF
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};
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/*
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* sys_reg2 bitfield struct
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* [31] row_3_4_ch1
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* [30] row_3_4_ch0
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* [29:28] chinfo
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* [27] rank_ch1
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* [26:25] col_ch1
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* [24] bk_ch1
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* [23:22] low bits of cs0_row_ch1
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* [21:20] low bits of cs1_row_ch1
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* [19:18] bw_ch1
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* [17:16] dbw_ch1;
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* [15:13] ddrtype
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* [12] channelnum
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* [11] rank_ch0
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* [10:9] col_ch0,
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* [8] bk_ch0
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* [7:6] low bits of cs0_row_ch0
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* [5:4] low bits of cs1_row_ch0
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* [3:2] bw_ch0
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* [1:0] dbw_ch0
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*/
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#define SYS_REG_DDRTYPE_SHIFT 13
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#define SYS_REG_DDRTYPE_MASK 7
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#define SYS_REG_NUM_CH_SHIFT 12
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#define SYS_REG_NUM_CH_MASK 1
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#define SYS_REG_ROW_3_4_SHIFT(ch) (30 + (ch))
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#define SYS_REG_ROW_3_4_MASK 1
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#define SYS_REG_CHINFO_SHIFT(ch) (28 + (ch))
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#define SYS_REG_RANK_SHIFT(ch) (11 + (ch) * 16)
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#define SYS_REG_RANK_MASK 1
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#define SYS_REG_COL_SHIFT(ch) (9 + (ch) * 16)
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#define SYS_REG_COL_MASK 3
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#define SYS_REG_BK_SHIFT(ch) (8 + (ch) * 16)
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#define SYS_REG_BK_MASK 1
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#define SYS_REG_CS0_ROW_SHIFT(ch) (6 + (ch) * 16)
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#define SYS_REG_CS0_ROW_MASK 3
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#define SYS_REG_CS1_ROW_SHIFT(ch) (4 + (ch) * 16)
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#define SYS_REG_CS1_ROW_MASK 3
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#define SYS_REG_BW_SHIFT(ch) (2 + (ch) * 16)
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#define SYS_REG_BW_MASK 3
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#define SYS_REG_DBW_SHIFT(ch) ((ch) * 16)
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#define SYS_REG_DBW_MASK 3
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/*
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* sys_reg3 bitfield struct
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* [7] high bit of cs0_row_ch1
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* [6] high bit of cs1_row_ch1
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* [5] high bit of cs0_row_ch0
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* [4] high bit of cs1_row_ch0
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* [3:2] cs1_col_ch1
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* [1:0] cs1_col_ch0
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*/
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#define SYS_REG_VERSION_SHIFT 28
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#define SYS_REG_VERSION_MASK 0xf
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#define SYS_REG_EXTEND_CS0_ROW_SHIFT(ch) (5 + (ch) * 2)
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#define SYS_REG_EXTEND_CS0_ROW_MASK 1
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#define SYS_REG_EXTEND_CS1_ROW_SHIFT(ch) (4 + (ch) * 2)
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#define SYS_REG_EXTEND_CS1_ROW_MASK 1
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#define SYS_REG_CS1_COL_SHIFT(ch) (0 + (ch) * 2)
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#define SYS_REG_CS1_COL_MASK 3
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/* Get sdram size decode from reg */
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size_t rockchip_sdram_size(phys_addr_t reg);
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/* Called by U-Boot board_init_r for Rockchip SoCs */
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int dram_init(void);
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#endif
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