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