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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / cf2a075b8c176631cd693b863a171fb0e22b61b0 / . / board / kontron / sl28 / ddr.c
blob: 315d9f99c71d3a93062edfc89bbdc76e8faebe14 [file] [log] [blame]
Michael Walle4ceb5c62020-10-15 23:08:57 +0200[diff] [blame]1// SPDX-License-Identifier: GPL-2.0+
2
3#include <common.h>
Simon Glass401d1c42020-10-30 21:38:53 -0600[diff] [blame]4#include <asm/global_data.h>
Michael Walle4ceb5c62020-10-15 23:08:57 +0200[diff] [blame]5#include <asm/io.h>
6#include <fsl_ddr_sdram.h>
7
8DECLARE_GLOBAL_DATA_PTR;
9
10#define DCFG_GPPORCR1 0x20
11
12#define GPPORCR1_MEM_MASK (0x7 << 5)
13#define GPPORCR1_MEM_512MB_CS0 (0x0 << 5)
14#define GPPORCR1_MEM_1GB_CS0 (0x1 << 5)
15#define GPPORCR1_MEM_2GB_CS0 (0x2 << 5)
16#define GPPORCR1_MEM_4GB_CS0_1 (0x3 << 5)
17#define GPPORCR1_MEM_4GB_CS0_2 (0x4 << 5)
18#define GPPORCR1_MEM_8GB_CS0_1_2_3 (0x5 << 5)
19#define GPPORCR1_MEM_8GB_CS0_1 (0x6 << 5)
20
21static fsl_ddr_cfg_regs_t __maybe_unused ddr_cfg_regs = {
22 .cs[0].bnds = 0x0000007f,
23 .cs[0].config = 0x80044402,
24 .cs[1].bnds = 0x008000ff,
25 .cs[1].config = 0x80004402,
26
27 .timing_cfg_0 = 0x9011010c,
28 .timing_cfg_3 = 0x010c1000,
29 .timing_cfg_1 = 0xbcb48c66,
30 .timing_cfg_2 = 0x0fc0d118,
31 .ddr_sdram_cfg = 0xe70c000c,
32 .ddr_sdram_cfg_2 = 0x24401111,
33 .ddr_sdram_mode = 0x00441c70,
34 .ddr_sdram_mode_3 = 0x00001c70,
35 .ddr_sdram_mode_5 = 0x00001c70,
36 .ddr_sdram_mode_7 = 0x00001c70,
37 .ddr_sdram_mode_2 = 0x00180000,
38 .ddr_sdram_mode_4 = 0x00180000,
39 .ddr_sdram_mode_6 = 0x00180000,
40 .ddr_sdram_mode_8 = 0x00180000,
41
42 .ddr_sdram_interval = 0x0c30030c,
43 .ddr_data_init = 0xdeadbeef,
44
45 .ddr_sdram_clk_cntl = 0x02400000,
46
47 .timing_cfg_4 = 0x00000001,
48 .timing_cfg_5 = 0x04401400,
49
50 .ddr_zq_cntl = 0x89080600,
51 .ddr_wrlvl_cntl = 0x8675f606,
52 .ddr_wrlvl_cntl_2 = 0x04080700,
53 .ddr_wrlvl_cntl_3 = 0x00000009,
54
55 .ddr_cdr1 = 0x80040000,
56 .ddr_cdr2 = 0x0000bc01,
Michael Walle6bdda4b2022-05-30 23:02:07 +0200[diff] [blame]57
58 /* Erratum A-009942, set optimal CPO value */
59 .debug[28] = 0x00700040,
Michael Walle4ceb5c62020-10-15 23:08:57 +0200[diff] [blame]60};
61
62int fsl_initdram(void)
63{
64 u32 gpporcr1 = in_le32(DCFG_BASE + DCFG_GPPORCR1);
65 phys_size_t dram_size;
66
67 switch (gpporcr1 & GPPORCR1_MEM_MASK) {
68 case GPPORCR1_MEM_2GB_CS0:
69 dram_size = 0x80000000;
70 ddr_cfg_regs.cs[1].bnds = 0;
71 ddr_cfg_regs.cs[1].config = 0;
Michael Walle4ceb5c62020-10-15 23:08:57 +0200[diff] [blame]72 break;
73 case GPPORCR1_MEM_4GB_CS0_1:
74 dram_size = 0x100000000ULL;
75 break;
Michael Walle10292492022-05-30 23:02:09 +0200[diff] [blame]76 case GPPORCR1_MEM_8GB_CS0_1:
77 dram_size = 0x200000000ULL;
78 ddr_cfg_regs.cs[0].bnds = 0x000000ff;
79 ddr_cfg_regs.cs[0].config = 0x80044403;
80 ddr_cfg_regs.cs[1].bnds = 0x010001ff;
81 ddr_cfg_regs.cs[1].config = 0x80044403;
82 break;
Michael Walle4ceb5c62020-10-15 23:08:57 +0200[diff] [blame]83 case GPPORCR1_MEM_512MB_CS0:
84 dram_size = 0x20000000;
85 fallthrough; /* for now */
86 case GPPORCR1_MEM_1GB_CS0:
87 dram_size = 0x40000000;
88 fallthrough; /* for now */
89 case GPPORCR1_MEM_4GB_CS0_2:
90 dram_size = 0x100000000ULL;
91 fallthrough; /* for now */
Michael Walle4ceb5c62020-10-15 23:08:57 +0200[diff] [blame]92 case GPPORCR1_MEM_8GB_CS0_1_2_3:
93 dram_size = 0x200000000ULL;
94 fallthrough; /* for now */
95 default:
96 panic("Unsupported memory configuration (%08x)\n",
97 gpporcr1 & GPPORCR1_MEM_MASK);
98 break;
99 }
100
101 if (!IS_ENABLED(CONFIG_SPL) || IS_ENABLED(CONFIG_SPL_BUILD))
102 fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0, 0);
103
104 gd->ram_size = dram_size;
105
106 return 0;
107}