2 * Copyright (C) 2014-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
4 * SPDX-License-Identifier: GPL-2.0+
10 #include <linux/sizes.h>
12 #include "../soc-info.h"
13 #include "ddrphy-regs.h"
15 /* Select either decimal or hexadecimal */
17 #define PRINTF_FORMAT "%2d"
19 #define PRINTF_FORMAT "%02x"
24 static unsigned long uniphier_ld4_base[] = {
30 static unsigned long uniphier_pro4_base[] = {
36 static unsigned long uniphier_sld8_base[] = {
42 static u32 read_bdl(struct ddrphy_datx8 __iomem *dx, int index)
44 return (readl(&dx->bdlr[index / 5]) >> (index % 5 * 6)) & 0x3f;
47 static void dump_loop(unsigned long *base,
48 void (*callback)(struct ddrphy_datx8 __iomem *))
50 struct ddrphy __iomem *phy;
53 for (p = 0; *base; base++, p++) {
54 phy = map_sysmem(*base, SZ_4K);
56 for (dx = 0; dx < NR_DATX8_PER_DDRPHY; dx++) {
57 printf("PHY%dDX%d:", p, dx);
58 (*callback)(&phy->dx[dx]);
66 static void __wbdl_dump(struct ddrphy_datx8 __iomem *dx)
70 for (i = 0; i < 10; i++)
71 printf(FS PRINTF_FORMAT, read_bdl(dx, i));
73 printf(FS "(+" PRINTF_FORMAT ")", readl(&dx->lcdlr[1]) & 0xff);
76 static void wbdl_dump(unsigned long *base)
78 printf("\n--- Write Bit Delay Line ---\n");
79 printf(" DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 DM DQS (WDQD)\n");
81 dump_loop(base, &__wbdl_dump);
84 static void __rbdl_dump(struct ddrphy_datx8 __iomem *dx)
88 for (i = 15; i < 24; i++)
89 printf(FS PRINTF_FORMAT, read_bdl(dx, i));
91 printf(FS "(+" PRINTF_FORMAT ")", (readl(&dx->lcdlr[1]) >> 8) & 0xff);
94 static void rbdl_dump(unsigned long *base)
96 printf("\n--- Read Bit Delay Line ---\n");
97 printf(" DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 DM (RDQSD)\n");
99 dump_loop(base, &__rbdl_dump);
102 static void __wld_dump(struct ddrphy_datx8 __iomem *dx)
105 u32 lcdlr0 = readl(&dx->lcdlr[0]);
106 u32 gtr = readl(&dx->gtr);
108 for (rank = 0; rank < 4; rank++) {
109 u32 wld = (lcdlr0 >> (8 * rank)) & 0xff; /* Delay */
110 u32 wlsl = (gtr >> (12 + 2 * rank)) & 0x3; /* System Latency */
112 printf(FS PRINTF_FORMAT "%sT", wld,
113 wlsl == 0 ? "-1" : wlsl == 1 ? "+0" : "+1");
117 static void wld_dump(unsigned long *base)
119 printf("\n--- Write Leveling Delay ---\n");
120 printf(" Rank0 Rank1 Rank2 Rank3\n");
122 dump_loop(base, &__wld_dump);
125 static void __dqsgd_dump(struct ddrphy_datx8 __iomem *dx)
128 u32 lcdlr2 = readl(&dx->lcdlr[2]);
129 u32 gtr = readl(&dx->gtr);
131 for (rank = 0; rank < 4; rank++) {
132 u32 dqsgd = (lcdlr2 >> (8 * rank)) & 0xff; /* Delay */
133 u32 dgsl = (gtr >> (3 * rank)) & 0x7; /* System Latency */
135 printf(FS PRINTF_FORMAT "+%dT", dqsgd, dgsl);
139 static void dqsgd_dump(unsigned long *base)
141 printf("\n--- DQS Gating Delay ---\n");
142 printf(" Rank0 Rank1 Rank2 Rank3\n");
144 dump_loop(base, &__dqsgd_dump);
147 static void __mdl_dump(struct ddrphy_datx8 __iomem *dx)
150 u32 mdl = readl(&dx->mdlr);
151 for (i = 0; i < 3; i++)
152 printf(FS PRINTF_FORMAT, (mdl >> (8 * i)) & 0xff);
155 static void mdl_dump(unsigned long *base)
157 printf("\n--- Master Delay Line ---\n");
158 printf(" IPRD TPRD MDLD\n");
160 dump_loop(base, &__mdl_dump);
163 #define REG_DUMP(x) \
164 { u32 __iomem *p = &phy->x; printf("%3d: %-10s: %p : %08x\n", \
165 p - (u32 *)phy, #x, p, readl(p)); }
167 static void reg_dump(unsigned long *base)
169 struct ddrphy __iomem *phy;
172 printf("\n--- DDR PHY registers ---\n");
174 for (p = 0; *base; base++, p++) {
175 phy = map_sysmem(*base, SZ_4K);
177 printf("== PHY%d (base: %p) ==\n", p, phy);
178 printf(" No: Name : Address : Data\n");
213 static int do_ddr(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
218 switch (uniphier_get_soc_type()) {
219 case SOC_UNIPHIER_LD4:
220 base = uniphier_ld4_base;
222 case SOC_UNIPHIER_PRO4:
223 base = uniphier_pro4_base;
225 case SOC_UNIPHIER_SLD8:
226 base = uniphier_sld8_base;
229 printf("unsupported SoC\n");
230 return CMD_RET_FAILURE;
236 if (!strcmp(cmd, "wbdl") || !strcmp(cmd, "all"))
239 if (!strcmp(cmd, "rbdl") || !strcmp(cmd, "all"))
242 if (!strcmp(cmd, "wld") || !strcmp(cmd, "all"))
245 if (!strcmp(cmd, "dqsgd") || !strcmp(cmd, "all"))
248 if (!strcmp(cmd, "mdl") || !strcmp(cmd, "all"))
251 if (!strcmp(cmd, "reg") || !strcmp(cmd, "all"))
254 return CMD_RET_SUCCESS;
259 "UniPhier DDR PHY parameters dumper",
260 "- dump all of the followings\n"
261 "ddr wbdl - dump Write Bit Delay\n"
262 "ddr rbdl - dump Read Bit Delay\n"
263 "ddr wld - dump Write Leveling\n"
264 "ddr dqsgd - dump DQS Gating Delay\n"
265 "ddr mdl - dump Master Delay Line\n"
266 "ddr reg - dump registers\n"