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Shengzhou Liuaba80042014-11-24 17:11:55 +08001/*
2 * Copyright 2014 Freescale Semiconductor, Inc.
3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7#include <common.h>
8#include <i2c.h>
9#include <hwconfig.h>
10#include <asm/mmu.h>
11#include <fsl_ddr_sdram.h>
12#include <fsl_ddr_dimm_params.h>
13#include <asm/fsl_law.h>
tang yuantian2c537642014-12-18 09:55:07 +080014#include <asm/mpc85xx_gpio.h>
Shengzhou Liuaba80042014-11-24 17:11:55 +080015
16DECLARE_GLOBAL_DATA_PTR;
17
18struct board_specific_parameters {
19 u32 n_ranks;
20 u32 datarate_mhz_high;
21 u32 rank_gb;
22 u32 clk_adjust;
23 u32 wrlvl_start;
24 u32 wrlvl_ctl_2;
25 u32 wrlvl_ctl_3;
26};
27
28/*
29 * datarate_mhz_high values need to be in ascending order
30 */
31static const struct board_specific_parameters udimm0[] = {
32 /*
33 * memory controller 0
34 * num| hi| rank| clk| wrlvl | wrlvl | wrlvl |
35 * ranks| mhz| GB |adjst| start | ctl2 | ctl3 |
36 */
37#if defined(CONFIG_SYS_FSL_DDR4)
38 {2, 1666, 0, 4, 7, 0x0808090B, 0x0C0D0E0A,},
39 {2, 1900, 0, 4, 6, 0x08080A0C, 0x0D0E0F0A,},
40 {1, 1666, 0, 4, 6, 0x0708090B, 0x0C0D0E09,},
41 {1, 1900, 0, 4, 6, 0x08080A0C, 0x0D0E0F0A,},
42 {1, 2200, 0, 4, 7, 0x08090A0D, 0x0F0F100C,},
43#elif defined(CONFIG_SYS_FSL_DDR3)
44 {2, 833, 0, 4, 6, 0x06060607, 0x08080807,},
45 {2, 1350, 0, 4, 7, 0x0708080A, 0x0A0B0C09,},
46 {2, 1666, 0, 4, 7, 0x0808090B, 0x0C0D0E0A,},
47 {1, 833, 0, 4, 6, 0x06060607, 0x08080807,},
48 {1, 1350, 0, 4, 7, 0x0708080A, 0x0A0B0C09,},
49 {1, 1666, 0, 4, 7, 0x0808090B, 0x0C0D0E0A,},
50#else
51#error DDR type not defined
52#endif
53 {}
54};
55
56static const struct board_specific_parameters *udimms[] = {
57 udimm0,
58};
59
60void fsl_ddr_board_options(memctl_options_t *popts,
61 dimm_params_t *pdimm,
62 unsigned int ctrl_num)
63{
64 const struct board_specific_parameters *pbsp, *pbsp_highest = NULL;
65 ulong ddr_freq;
66 struct cpu_type *cpu = gd->arch.cpu;
67
68 if (ctrl_num > 2) {
69 printf("Not supported controller number %d\n", ctrl_num);
70 return;
71 }
72 if (!pdimm->n_ranks)
73 return;
74
75 pbsp = udimms[0];
76
77 /* Get clk_adjust according to the board ddr freqency and n_banks
78 * specified in board_specific_parameters table.
79 */
80 ddr_freq = get_ddr_freq(0) / 1000000;
81 while (pbsp->datarate_mhz_high) {
82 if (pbsp->n_ranks == pdimm->n_ranks &&
83 (pdimm->rank_density >> 30) >= pbsp->rank_gb) {
84 if (ddr_freq <= pbsp->datarate_mhz_high) {
85 popts->clk_adjust = pbsp->clk_adjust;
86 popts->wrlvl_start = pbsp->wrlvl_start;
87 popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
88 popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
89 goto found;
90 }
91 pbsp_highest = pbsp;
92 }
93 pbsp++;
94 }
95
96 if (pbsp_highest) {
97 printf("Error: board specific timing not found\n");
98 printf("for data rate %lu MT/s\n", ddr_freq);
99 printf("Trying to use the highest speed (%u) parameters\n",
100 pbsp_highest->datarate_mhz_high);
101 popts->clk_adjust = pbsp_highest->clk_adjust;
102 popts->wrlvl_start = pbsp_highest->wrlvl_start;
103 popts->wrlvl_ctl_2 = pbsp->wrlvl_ctl_2;
104 popts->wrlvl_ctl_3 = pbsp->wrlvl_ctl_3;
105 } else {
106 panic("DIMM is not supported by this board");
107 }
108found:
109 debug("Found timing match: n_ranks %d, data rate %d, rank_gb %d\n",
110 pbsp->n_ranks, pbsp->datarate_mhz_high, pbsp->rank_gb);
111 debug("\tclk_adjust %d, wrlvl_start %d, wrlvl_ctrl_2 0x%x, ",
112 pbsp->clk_adjust, pbsp->wrlvl_start, pbsp->wrlvl_ctl_2);
113 debug("wrlvl_ctrl_3 0x%x\n", pbsp->wrlvl_ctl_3);
114
115 /*
116 * Factors to consider for half-strength driver enable:
117 * - number of DIMMs installed
118 */
119 popts->half_strength_driver_enable = 1;
120 /*
121 * Write leveling override
122 */
123 popts->wrlvl_override = 1;
124 popts->wrlvl_sample = 0xf;
125
126 /*
127 * rtt and rtt_wr override
128 */
129 popts->rtt_override = 0;
130
131 /* Enable ZQ calibration */
132 popts->zq_en = 1;
133
134 /* DHC_EN =1, ODT = 75 Ohm */
135#ifdef CONFIG_SYS_FSL_DDR4
136 popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_80ohm);
137 popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_80ohm) |
138 DDR_CDR2_VREF_OVRD(70); /* Vref = 70% */
139#else
140 popts->ddr_cdr1 = DDR_CDR1_DHC_EN | DDR_CDR1_ODT(DDR_CDR_ODT_75ohm);
141 popts->ddr_cdr2 = DDR_CDR2_ODT(DDR_CDR_ODT_75ohm);
142#endif
143
144 /* T1023 supports max DDR bus 32bit width, T1024 supports DDR 64bit,
145 * set DDR bus width to 32bit for T1023
146 */
147 if (cpu->soc_ver == SVR_T1023)
148 popts->data_bus_width = DDR_DATA_BUS_WIDTH_32;
149
150#ifdef CONFIG_FORCE_DDR_DATA_BUS_WIDTH_32
151 /* for DDR bus 32bit test on T1024 */
152 popts->data_bus_width = DDR_DATA_BUS_WIDTH_32;
153#endif
154}
155
tang yuantian2c537642014-12-18 09:55:07 +0800156#if defined(CONFIG_DEEP_SLEEP)
157void board_mem_sleep_setup(void)
158{
159 void __iomem *qixis_base = (void *)QIXIS_BASE;
160
161 /* does not provide HW signals for power management */
162 clrbits_8(qixis_base + 0x21, 0x2);
163 /* Disable MCKE isolation */
164 gpio_set_value(2, 0);
165 udelay(1);
166}
167#endif
168
Shengzhou Liuaba80042014-11-24 17:11:55 +0800169phys_size_t initdram(int board_type)
170{
171 phys_size_t dram_size;
172
173#if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_RAMBOOT_PBL)
174 puts("Initializing....using SPD\n");
175
176 dram_size = fsl_ddr_sdram();
177 dram_size = setup_ddr_tlbs(dram_size / 0x100000);
178 dram_size *= 0x100000;
179#else
180 /* DDR has been initialised by first stage boot loader */
181 dram_size = fsl_ddr_sdram_size();
182#endif
tang yuantian2c537642014-12-18 09:55:07 +0800183
184#if defined(CONFIG_DEEP_SLEEP) && !defined(CONFIG_SPL_BUILD)
185 fsl_dp_resume();
186#endif
187
Shengzhou Liuaba80042014-11-24 17:11:55 +0800188 return dram_size;
189}