1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * (C) Copyright 2013 SAMSUNG Electronics
4  * Rajeshwari Shinde <rajeshwari.s@samsung.com>
5  */
6 
7 #include <common.h>
8 #include <cros_ec.h>
9 #include <env.h>
10 #include <errno.h>
11 #include <fdtdec.h>
12 #include <hang.h>
13 #include <init.h>
14 #include <log.h>
15 #include <net.h>
16 #include <spi.h>
17 #include <tmu.h>
18 #include <netdev.h>
19 #include <asm/global_data.h>
20 #include <asm/io.h>
21 #include <asm/gpio.h>
22 #include <asm/arch/board.h>
23 #include <asm/arch/cpu.h>
24 #include <asm/arch/dwmmc.h>
25 #include <asm/arch/mmc.h>
26 #include <asm/arch/pinmux.h>
27 #include <asm/arch/power.h>
28 #include <asm/arch/system.h>
29 #include <i2c.h>
30 #include <mmc.h>
31 #include <stdio_dev.h>
32 #include <usb.h>
33 #include <dwc3-uboot.h>
34 #include <linux/delay.h>
35 #include <samsung/misc.h>
36 #include <dm/pinctrl.h>
37 #include <dm.h>
38 
39 DECLARE_GLOBAL_DATA_PTR;
40 
exynos_early_init_f(void)41 __weak int exynos_early_init_f(void)
42 {
43 	return 0;
44 }
45 
exynos_power_init(void)46 __weak int exynos_power_init(void)
47 {
48 	return 0;
49 }
50 
51 /**
52  * get_boot_mmc_dev() - read boot MMC device id from XOM[7:5] pins.
53  */
get_boot_mmc_dev(void)54 static int get_boot_mmc_dev(void)
55 {
56 	u32 mode = readl(EXYNOS4_OP_MODE) & 0x1C;
57 
58 	if (mode == 0x04)
59 		return 2; /* MMC2: SD */
60 
61 	/* MMC0: eMMC or unknown */
62 	return 0;
63 }
64 
65 #if defined CONFIG_EXYNOS_TMU
66 /* Boot Time Thermal Analysis for SoC temperature threshold breach */
boot_temp_check(void)67 static void boot_temp_check(void)
68 {
69 	int temp;
70 
71 	switch (tmu_monitor(&temp)) {
72 	case TMU_STATUS_NORMAL:
73 		break;
74 	case TMU_STATUS_TRIPPED:
75 		/*
76 		 * Status TRIPPED ans WARNING means corresponding threshold
77 		 * breach
78 		 */
79 		puts("EXYNOS_TMU: TRIPPING! Device power going down ...\n");
80 		set_ps_hold_ctrl();
81 		hang();
82 		break;
83 	case TMU_STATUS_WARNING:
84 		puts("EXYNOS_TMU: WARNING! Temperature very high\n");
85 		break;
86 	case TMU_STATUS_INIT:
87 		/*
88 		 * TMU_STATUS_INIT means something is wrong with temperature
89 		 * sensing and TMU status was changed back from NORMAL to INIT.
90 		 */
91 		puts("EXYNOS_TMU: WARNING! Temperature sensing not done\n");
92 		break;
93 	default:
94 		debug("EXYNOS_TMU: Unknown TMU state\n");
95 	}
96 }
97 #endif
98 
board_init(void)99 int board_init(void)
100 {
101 	gd->bd->bi_boot_params = (PHYS_SDRAM_1 + 0x100UL);
102 #if defined CONFIG_EXYNOS_TMU
103 	if (tmu_init(gd->fdt_blob) != TMU_STATUS_NORMAL) {
104 		debug("%s: Failed to init TMU\n", __func__);
105 		return -1;
106 	}
107 	boot_temp_check();
108 #endif
109 #if CONFIG_VAL(SYS_MEM_TOP_HIDE)
110 	/* The last few MB of memory can be reserved for secure firmware */
111 	ulong size = CONFIG_SYS_MEM_TOP_HIDE;
112 
113 	gd->ram_size -= size;
114 	gd->bd->bi_dram[CONFIG_NR_DRAM_BANKS - 1].size -= size;
115 #endif
116 	return exynos_init();
117 }
118 
dram_init(void)119 int dram_init(void)
120 {
121 	unsigned int i;
122 	unsigned long addr;
123 
124 	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
125 		addr = CFG_SYS_SDRAM_BASE + (i * SDRAM_BANK_SIZE);
126 		gd->ram_size += get_ram_size((long *)addr, SDRAM_BANK_SIZE);
127 	}
128 	return 0;
129 }
130 
dram_init_banksize(void)131 int dram_init_banksize(void)
132 {
133 	unsigned int i;
134 	unsigned long addr, size;
135 
136 	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
137 		addr = CFG_SYS_SDRAM_BASE + (i * SDRAM_BANK_SIZE);
138 		size = get_ram_size((long *)addr, SDRAM_BANK_SIZE);
139 
140 		gd->bd->bi_dram[i].start = addr;
141 		gd->bd->bi_dram[i].size = size;
142 	}
143 
144 	return 0;
145 }
146 
board_uart_init(void)147 static int board_uart_init(void)
148 {
149 #ifndef CONFIG_PINCTRL_EXYNOS
150 	int err, uart_id, ret = 0;
151 
152 	for (uart_id = PERIPH_ID_UART0; uart_id <= PERIPH_ID_UART3; uart_id++) {
153 		err = exynos_pinmux_config(uart_id, PINMUX_FLAG_NONE);
154 		if (err) {
155 			debug("UART%d not configured\n",
156 			      (uart_id - PERIPH_ID_UART0));
157 			ret |= err;
158 		}
159 	}
160 	return ret;
161 #else
162 	return 0;
163 #endif
164 }
165 
166 #ifdef CONFIG_BOARD_EARLY_INIT_F
board_early_init_f(void)167 int board_early_init_f(void)
168 {
169 	int err;
170 #ifdef CONFIG_BOARD_TYPES
171 	set_board_type();
172 #endif
173 	err = board_uart_init();
174 	if (err) {
175 		debug("UART init failed\n");
176 		return err;
177 	}
178 
179 	return exynos_early_init_f();
180 }
181 #endif
182 
183 #if CONFIG_IS_ENABLED(POWER_LEGACY) || CONFIG_IS_ENABLED(DM_PMIC)
power_init_board(void)184 int power_init_board(void)
185 {
186 	set_ps_hold_ctrl();
187 
188 	return exynos_power_init();
189 }
190 #endif
191 
192 #if defined(CONFIG_DISPLAY_BOARDINFO) || defined(CONFIG_DISPLAY_BOARDINFO_LATE)
checkboard(void)193 int checkboard(void)
194 {
195 	if (IS_ENABLED(CONFIG_BOARD_TYPES)) {
196 		const char *board_info;
197 
198 		if (IS_ENABLED(CONFIG_DISPLAY_BOARDINFO_LATE)) {
199 			/*
200 			 * Printing type requires having revision, although
201 			 * this will succeed only if done late.
202 			 * Otherwise revision will be set in misc_init_r().
203 			 */
204 			set_board_revision();
205 		}
206 
207 		board_info = get_board_type();
208 
209 		if (board_info)
210 			printf("Type:  %s\n", board_info);
211 	}
212 
213 	return 0;
214 }
215 #endif
216 
217 #ifdef CONFIG_BOARD_LATE_INIT
board_late_init(void)218 int board_late_init(void)
219 {
220 	struct udevice *dev;
221 	int ret;
222 	int mmcbootdev = get_boot_mmc_dev();
223 	char mmcbootdev_str[16];
224 
225 	ret = uclass_first_device_err(UCLASS_CROS_EC, &dev);
226 	if (ret && ret != -ENODEV && ret != -EPFNOSUPPORT) {
227 		/* Force console on */
228 		gd->flags &= ~GD_FLG_SILENT;
229 
230 		printf("cros-ec communications failure %d\n", ret);
231 		puts("\nPlease reset with Power+Refresh\n\n");
232 		panic("Cannot init cros-ec device");
233 		return -1;
234 	}
235 
236 	printf("Boot device: MMC(%u)\n", mmcbootdev);
237 	sprintf(mmcbootdev_str, "%u", mmcbootdev);
238 	env_set("mmcbootdev", mmcbootdev_str);
239 
240 	return 0;
241 }
242 #endif
243 
244 #ifdef CONFIG_MISC_INIT_R
misc_init_r(void)245 int misc_init_r(void)
246 {
247 	if (IS_ENABLED(CONFIG_BOARD_TYPES) &&
248 	    !IS_ENABLED(CONFIG_DISPLAY_BOARDINFO_LATE)) {
249 		/*
250 		 * If revision was not set by late display boardinfo,
251 		 * set it here. At this point regulators should be already
252 		 * available.
253 		 */
254 		set_board_revision();
255 	}
256 
257 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
258 	set_board_info();
259 #endif
260 #ifdef CONFIG_CMD_BMP
261 	if (panel_info.logo_on)
262 		draw_logo();
263 #endif
264 	return 0;
265 }
266 #endif
267 
reset_misc(void)268 void reset_misc(void)
269 {
270 	struct gpio_desc gpio = {};
271 	int node;
272 
273 	node = fdt_node_offset_by_compatible(gd->fdt_blob, 0,
274 			"samsung,emmc-reset");
275 	if (node < 0)
276 		return;
277 
278 	gpio_request_by_name_nodev(offset_to_ofnode(node), "reset-gpio", 0,
279 				   &gpio, GPIOD_IS_OUT);
280 
281 	if (dm_gpio_is_valid(&gpio)) {
282 		/*
283 		 * Reset eMMC
284 		 *
285 		 * FIXME: Need to optimize delay time. Minimum 1usec pulse is
286 		 *	  required by 'JEDEC Standard No.84-A441' (eMMC)
287 		 *	  document but real delay time is expected to greater
288 		 *	  than 1usec.
289 		 */
290 		dm_gpio_set_value(&gpio, 0);
291 		mdelay(10);
292 		dm_gpio_set_value(&gpio, 1);
293 	}
294 }
295 
board_usb_cleanup(int index,enum usb_init_type init)296 int board_usb_cleanup(int index, enum usb_init_type init)
297 {
298 #ifdef CONFIG_USB_DWC3
299 	dwc3_uboot_exit(index);
300 #endif
301 	return 0;
302 }
303 
mmc_get_env_dev(void)304 int mmc_get_env_dev(void)
305 {
306 	return get_boot_mmc_dev();
307 }
308