1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2019 Rockchip Electronics Co., Ltd
4 */
5
6 #include <common.h>
7 #include <debug_uart.h>
8 #include <dm.h>
9 #include <ram.h>
10 #include <spl.h>
11 #include <version.h>
12 #include <asm/io.h>
13 #include <asm/arch-rockchip/bootrom.h>
14
15 #define TIMER_LOAD_COUNT_L 0x00
16 #define TIMER_LOAD_COUNT_H 0x04
17 #define TIMER_CONTROL_REG 0x10
18 #define TIMER_EN 0x1
19 #define TIMER_FMODE BIT(0)
20 #define TIMER_RMODE BIT(1)
21
rockchip_stimer_init(void)22 __weak void rockchip_stimer_init(void)
23 {
24 /* If Timer already enabled, don't re-init it */
25 u32 reg = readl(CONFIG_ROCKCHIP_STIMER_BASE + TIMER_CONTROL_REG);
26
27 if (reg & TIMER_EN)
28 return;
29
30 #ifndef CONFIG_ARM64
31 asm volatile("mcr p15, 0, %0, c14, c0, 0"
32 : : "r"(COUNTER_FREQUENCY));
33 #endif
34
35 writel(0, CONFIG_ROCKCHIP_STIMER_BASE + TIMER_CONTROL_REG);
36 writel(0xffffffff, CONFIG_ROCKCHIP_STIMER_BASE);
37 writel(0xffffffff, CONFIG_ROCKCHIP_STIMER_BASE + 4);
38 writel(TIMER_EN | TIMER_FMODE, CONFIG_ROCKCHIP_STIMER_BASE +
39 TIMER_CONTROL_REG);
40 }
41
board_init_f(ulong dummy)42 void board_init_f(ulong dummy)
43 {
44 struct udevice *dev;
45 int ret;
46
47 #if defined(CONFIG_DEBUG_UART) && defined(CONFIG_TPL_SERIAL_SUPPORT)
48 /*
49 * Debug UART can be used from here if required:
50 *
51 * debug_uart_init();
52 * printch('a');
53 * printhex8(0x1234);
54 * printascii("string");
55 */
56 debug_uart_init();
57 #ifdef CONFIG_TPL_BANNER_PRINT
58 printascii("\nU-Boot TPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
59 U_BOOT_TIME ")\n");
60 #endif
61 #endif
62 ret = spl_early_init();
63 if (ret) {
64 debug("spl_early_init() failed: %d\n", ret);
65 hang();
66 }
67
68 /* Init secure timer */
69 rockchip_stimer_init();
70 /* Init ARM arch timer in arch/arm/cpu/ */
71 timer_init();
72
73 ret = uclass_get_device(UCLASS_RAM, 0, &dev);
74 if (ret) {
75 printf("DRAM init failed: %d\n", ret);
76 return;
77 }
78 }
79
board_return_to_bootrom(struct spl_image_info * spl_image,struct spl_boot_device * bootdev)80 int board_return_to_bootrom(struct spl_image_info *spl_image,
81 struct spl_boot_device *bootdev)
82 {
83 back_to_bootrom(BROM_BOOT_NEXTSTAGE);
84
85 return 0;
86 }
87
spl_boot_device(void)88 u32 spl_boot_device(void)
89 {
90 return BOOT_DEVICE_BOOTROM;
91 }
92