1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * SPL board functions for CompuLab CL-SOM-iMX7 module
4 *
5 * (C) Copyright 2017 CompuLab, Ltd. http://www.compulab.com
6 *
7 * Author: Uri Mashiach <uri.mashiach@compulab.co.il>
8 */
9
10 #include <common.h>
11 #include <hang.h>
12 #include <init.h>
13 #include <spl.h>
14 #include <fsl_esdhc_imx.h>
15 #include <asm/mach-imx/iomux-v3.h>
16 #include <asm/arch-mx7/mx7-pins.h>
17 #include <asm/arch-mx7/clock.h>
18 #include <asm/arch-mx7/mx7-ddr.h>
19 #include "common.h"
20
21 #ifdef CONFIG_FSL_ESDHC_IMX
22
23 static struct fsl_esdhc_cfg cl_som_imx7_spl_usdhc_cfg = {
24 USDHC1_BASE_ADDR, 0, 4};
25
board_mmc_init(struct bd_info * bis)26 int board_mmc_init(struct bd_info *bis)
27 {
28 cl_som_imx7_usdhc1_pads_set();
29 cl_som_imx7_spl_usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
30 return fsl_esdhc_initialize(bis, &cl_som_imx7_spl_usdhc_cfg);
31 }
32 #endif /* CONFIG_FSL_ESDHC_IMX */
33
34 static iomux_v3_cfg_t const led_pads[] = {
35 MX7D_PAD_SAI1_TX_SYNC__GPIO6_IO14 | MUX_PAD_CTRL(PAD_CTL_PUS_PU5KOHM |
36 PAD_CTL_PUE | PAD_CTL_SRE_SLOW)
37 };
38
39 static struct ddrc cl_som_imx7_spl_ddrc_regs_val = {
40 .init1 = 0x00690000,
41 .init0 = 0x00020083,
42 .init3 = 0x09300004,
43 .init4 = 0x04080000,
44 .init5 = 0x00100004,
45 .rankctl = 0x0000033F,
46 .dramtmg1 = 0x0007020E,
47 .dramtmg2 = 0x03040407,
48 .dramtmg3 = 0x00002006,
49 .dramtmg4 = 0x04020305,
50 .dramtmg5 = 0x03030202,
51 .dramtmg8 = 0x00000803,
52 .zqctl0 = 0x00810021,
53 .dfitmg0 = 0x02098204,
54 .dfitmg1 = 0x00030303,
55 .dfiupd0 = 0x80400003,
56 .dfiupd1 = 0x00100020,
57 .dfiupd2 = 0x80100004,
58 .addrmap4 = 0x00000F0F,
59 .odtcfg = 0x06000604,
60 .odtmap = 0x00000001,
61 };
62
63 static struct ddrc_mp cl_som_imx7_spl_ddrc_mp_val = {
64 .pctrl_0 = 0x00000001,
65 };
66
67 static struct ddr_phy cl_som_imx7_spl_ddr_phy_regs_val = {
68 .phy_con0 = 0x17420F40,
69 .phy_con1 = 0x10210100,
70 .phy_con4 = 0x00060807,
71 .mdll_con0 = 0x1010007E,
72 .drvds_con0 = 0x00000D6E,
73 .cmd_sdll_con0 = 0x00000010,
74 .offset_lp_con0 = 0x0000000F,
75 };
76
77 struct mx7_calibration cl_som_imx7_spl_calib_param = {
78 .num_val = 5,
79 .values = {
80 0x0E407304,
81 0x0E447304,
82 0x0E447306,
83 0x0E447304,
84 0x0E407304,
85 },
86 };
87
cl_som_imx7_spl_dram_cfg_size(u32 ram_size)88 static void cl_som_imx7_spl_dram_cfg_size(u32 ram_size)
89 {
90 switch (ram_size) {
91 case SZ_256M:
92 cl_som_imx7_spl_ddrc_regs_val.mstr = 0x01041001;
93 cl_som_imx7_spl_ddrc_regs_val.rfshtmg = 0x00400046;
94 cl_som_imx7_spl_ddrc_regs_val.dramtmg0 = 0x090E1109;
95 cl_som_imx7_spl_ddrc_regs_val.addrmap0 = 0x00000014;
96 cl_som_imx7_spl_ddrc_regs_val.addrmap1 = 0x00151515;
97 cl_som_imx7_spl_ddrc_regs_val.addrmap5 = 0x03030303;
98 cl_som_imx7_spl_ddrc_regs_val.addrmap6 = 0x0F0F0303;
99 cl_som_imx7_spl_ddr_phy_regs_val.offset_rd_con0 = 0x0C0C0C0C;
100 cl_som_imx7_spl_ddr_phy_regs_val.offset_wr_con0 = 0x04040404;
101 break;
102 case SZ_512M:
103 cl_som_imx7_spl_ddrc_regs_val.mstr = 0x01040001;
104 cl_som_imx7_spl_ddrc_regs_val.rfshtmg = 0x00400046;
105 cl_som_imx7_spl_ddrc_regs_val.dramtmg0 = 0x090E1109;
106 cl_som_imx7_spl_ddrc_regs_val.addrmap0 = 0x00000015;
107 cl_som_imx7_spl_ddrc_regs_val.addrmap1 = 0x00161616;
108 cl_som_imx7_spl_ddrc_regs_val.addrmap5 = 0x04040404;
109 cl_som_imx7_spl_ddrc_regs_val.addrmap6 = 0x0F0F0404;
110 cl_som_imx7_spl_ddr_phy_regs_val.offset_rd_con0 = 0x0C0C0C0C;
111 cl_som_imx7_spl_ddr_phy_regs_val.offset_wr_con0 = 0x04040404;
112 break;
113 case SZ_1G:
114 cl_som_imx7_spl_ddrc_regs_val.mstr = 0x01040001;
115 cl_som_imx7_spl_ddrc_regs_val.rfshtmg = 0x00400046;
116 cl_som_imx7_spl_ddrc_regs_val.dramtmg0 = 0x090E1109;
117 cl_som_imx7_spl_ddrc_regs_val.addrmap0 = 0x00000016;
118 cl_som_imx7_spl_ddrc_regs_val.addrmap1 = 0x00171717;
119 cl_som_imx7_spl_ddrc_regs_val.addrmap5 = 0x04040404;
120 cl_som_imx7_spl_ddrc_regs_val.addrmap6 = 0x0F040404;
121 cl_som_imx7_spl_ddr_phy_regs_val.offset_rd_con0 = 0x0A0A0A0A;
122 cl_som_imx7_spl_ddr_phy_regs_val.offset_wr_con0 = 0x02020202;
123 break;
124 case SZ_2G:
125 cl_som_imx7_spl_ddrc_regs_val.mstr = 0x01040001;
126 cl_som_imx7_spl_ddrc_regs_val.rfshtmg = 0x0040005E;
127 cl_som_imx7_spl_ddrc_regs_val.dramtmg0 = 0x090E110A;
128 cl_som_imx7_spl_ddrc_regs_val.addrmap0 = 0x00000018;
129 cl_som_imx7_spl_ddrc_regs_val.addrmap1 = 0x00181818;
130 cl_som_imx7_spl_ddrc_regs_val.addrmap5 = 0x04040404;
131 cl_som_imx7_spl_ddrc_regs_val.addrmap6 = 0x04040404;
132 cl_som_imx7_spl_ddr_phy_regs_val.offset_rd_con0 = 0x0A0A0A0A;
133 cl_som_imx7_spl_ddr_phy_regs_val.offset_wr_con0 = 0x04040404;
134 break;
135 }
136
137 mx7_dram_cfg(&cl_som_imx7_spl_ddrc_regs_val,
138 &cl_som_imx7_spl_ddrc_mp_val,
139 &cl_som_imx7_spl_ddr_phy_regs_val,
140 &cl_som_imx7_spl_calib_param);
141 }
142
cl_som_imx7_spl_dram_cfg(void)143 static void cl_som_imx7_spl_dram_cfg(void)
144 {
145 ulong ram_size_test, ram_size = 0;
146
147 for (ram_size = SZ_2G; ram_size >= SZ_256M; ram_size >>= 1) {
148 cl_som_imx7_spl_dram_cfg_size(ram_size);
149 ram_size_test = get_ram_size((long int *)PHYS_SDRAM, ram_size);
150 if (ram_size_test == ram_size)
151 break;
152 }
153
154 if (ram_size < SZ_256M) {
155 puts("!!!ERROR!!! DRAM detection failed!!!\n");
156 hang();
157 }
158 }
159
160 #ifdef CONFIG_SPL_SPI_SUPPORT
161
cl_som_imx7_spl_spi_init(void)162 static void cl_som_imx7_spl_spi_init(void)
163 {
164 cl_som_imx7_espi1_pads_set();
165 }
166 #else /* !CONFIG_SPL_SPI_SUPPORT */
cl_som_imx7_spl_spi_init(void)167 static void cl_som_imx7_spl_spi_init(void) {}
168 #endif /* CONFIG_SPL_SPI_SUPPORT */
169
board_init_f(ulong dummy)170 void board_init_f(ulong dummy)
171 {
172 imx_iomux_v3_setup_multiple_pads(led_pads, 1);
173 /* setup AIPS and disable watchdog */
174 arch_cpu_init();
175 /* setup GP timer */
176 timer_init();
177 cl_som_imx7_spl_spi_init();
178 cl_som_imx7_uart1_pads_set();
179 /* UART clocks enabled and gd valid - init serial console */
180 preloader_console_init();
181 /* DRAM detection */
182 cl_som_imx7_spl_dram_cfg();
183 /* Clear the BSS. */
184 memset(__bss_start, 0, __bss_end - __bss_start);
185 /* load/boot image from boot device */
186 board_init_r(NULL, 0);
187 }
188
spl_board_init(void)189 void spl_board_init(void)
190 {
191 u32 boot_device = spl_boot_device();
192
193 if (boot_device == BOOT_DEVICE_SPI)
194 puts("Booting from SPI flash\n");
195 else if (boot_device == BOOT_DEVICE_MMC1)
196 puts("Booting from SD card\n");
197 else
198 puts("Unknown boot device\n");
199 }
200
board_boot_order(u32 * spl_boot_list)201 void board_boot_order(u32 *spl_boot_list)
202 {
203 spl_boot_list[0] = spl_boot_device();
204 switch (spl_boot_list[0]) {
205 case BOOT_DEVICE_SPI:
206 spl_boot_list[1] = BOOT_DEVICE_MMC1;
207 break;
208 case BOOT_DEVICE_MMC1:
209 spl_boot_list[1] = BOOT_DEVICE_SPI;
210 break;
211 }
212 }
213