1 /*
2  * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
3  *
4  * SPDX-License-Identifier:     GPL-2.0+
5  */
6 
7 #include <common.h>
8 #include <debug_uart.h>
9 #include <dm.h>
10 #include <dm/pinctrl.h>
11 #include <ram.h>
12 #include <spl.h>
13 #include <asm/io.h>
14 #include <asm/arch/cru_rk3368.h>
15 #include <asm/arch/grf_rk3368.h>
16 #include <asm/arch/hardware.h>
17 #include <asm/arch/periph.h>
18 #include <asm/arch/timer.h>
19 
20 DECLARE_GLOBAL_DATA_PTR;
21 
22 /*
23  * The ARMv8 generic timer uses the STIMER1 as its clock-source.
24  * Set up the STIMER1 to free-running (i.e. auto-reload) to start
25  * the generic timer counting (if we don't do this, udelay will not
26  * work and block indefinitively).
27  */
28 static void secure_timer_init(void)
29 {
30 	struct rk_timer * const stimer1 =
31 		(struct rk_timer * const)0xff830020;
32 	const u32 TIMER_EN = BIT(0);
33 
34 	writel(~0u, &stimer1->timer_load_count0);
35 	writel(~0u, &stimer1->timer_load_count1);
36 	writel(TIMER_EN, &stimer1->timer_ctrl_reg);
37 }
38 
39 void board_debug_uart_init(void)
40 {
41 }
42 
43 void board_init_f(ulong dummy)
44 {
45 	struct udevice *pinctrl;
46 	struct udevice *dev;
47 	int ret;
48 
49 	ret = spl_early_init();
50 	if (ret) {
51 		debug("spl_early_init() failed: %d\n", ret);
52 		hang();
53 	}
54 
55 	/* Make sure the ARMv8 generic timer counts */
56 	secure_timer_init();
57 
58 	/* Set up our preloader console */
59 	ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
60 	if (ret) {
61 		error("%s: pinctrl init failed: %d\n", __func__, ret);
62 		hang();
63 	}
64 
65 	ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART0);
66 	if (ret) {
67 		error("%s: failed to set up console UART\n", __func__);
68 		hang();
69 	}
70 
71 	preloader_console_init();
72 
73 	ret = uclass_get_device(UCLASS_RAM, 0, &dev);
74 	if (ret) {
75 		debug("DRAM init failed: %d\n", ret);
76 		return;
77 	}
78 }
79 
80 u32 spl_boot_mode(const u32 boot_device)
81 {
82 	return MMCSD_MODE_RAW;
83 }
84 
85 u32 spl_boot_device(void)
86 {
87 	return BOOT_DEVICE_MMC1;
88 }
89 
90 #ifdef CONFIG_SPL_LOAD_FIT
91 int board_fit_config_name_match(const char *name)
92 {
93 	/* Just empty function now - can't decide what to choose */
94 	debug("%s: %s\n", __func__, name);
95 
96 	return 0;
97 }
98 #endif
99