1 /*
2  * (C) Copyright 2017 Rockchip Electronics Co., Ltd
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 <ram.h>
11 #include <spl.h>
12 #include <asm/io.h>
13 #include <asm/arch/bootrom.h>
14 #include <asm/arch/cru_rk322x.h>
15 #include <asm/arch/grf_rk322x.h>
16 #include <asm/arch/hardware.h>
17 #include <asm/arch/timer.h>
18 #include <asm/arch/uart.h>
19 
20 u32 spl_boot_device(void)
21 {
22 	return BOOT_DEVICE_MMC1;
23 }
24 DECLARE_GLOBAL_DATA_PTR;
25 
26 #define GRF_BASE	0x11000000
27 #define SGRF_BASE	0x10140000
28 
29 #define DEBUG_UART_BASE	0x11030000
30 
31 void board_debug_uart_init(void)
32 {
33 static struct rk322x_grf * const grf = (void *)GRF_BASE;
34 	/* Enable early UART2 channel 1 on the RK322x */
35 	rk_clrsetreg(&grf->gpio1b_iomux,
36 		     GPIO1B1_MASK | GPIO1B2_MASK,
37 		     GPIO1B2_UART21_SIN << GPIO1B2_SHIFT |
38 		     GPIO1B1_UART21_SOUT << GPIO1B1_SHIFT);
39 	/* Set channel C as UART2 input */
40 	rk_clrsetreg(&grf->con_iomux,
41 		     CON_IOMUX_UART2SEL_MASK,
42 		     CON_IOMUX_UART2SEL_21 << CON_IOMUX_UART2SEL_SHIFT);
43 }
44 
45 #define SGRF_DDR_CON0 0x10150000
46 void board_init_f(ulong dummy)
47 {
48 	struct udevice *dev;
49 	int ret;
50 
51 	/*
52 	 * Debug UART can be used from here if required:
53 	 *
54 	 * debug_uart_init();
55 	 * printch('a');
56 	 * printhex8(0x1234);
57 	 * printascii("string");
58 	 */
59 	debug_uart_init();
60 	printascii("SPL Init");
61 
62 	ret = spl_early_init();
63 	if (ret) {
64 		debug("spl_early_init() failed: %d\n", ret);
65 		hang();
66 	}
67 
68 	rockchip_timer_init();
69 	printf("timer init done\n");
70 	ret = uclass_get_device(UCLASS_RAM, 0, &dev);
71 	if (ret) {
72 		printf("DRAM init failed: %d\n", ret);
73 		return;
74 	}
75 
76 	/* Disable the ddr secure region setting to make it non-secure */
77 	rk_clrreg(SGRF_DDR_CON0, 0x4000);
78 #if defined(CONFIG_ROCKCHIP_SPL_BACK_TO_BROM) && !defined(CONFIG_SPL_BOARD_INIT)
79 	back_to_bootrom(BROM_BOOT_NEXTSTAGE);
80 #endif
81 }
82