1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (c) Aspeed Technology Inc.
4  */
5 #include <common.h>
6 #include <debug_uart.h>
7 #include <dm.h>
8 #include <spl.h>
9 #include <init.h>
10 #include <linux/err.h>
11 #include <asm/io.h>
12 #include <asm/arch/scu_ast2600.h>
13 #include <asm/global_data.h>
14 
15 DECLARE_GLOBAL_DATA_PTR;
16 
board_init_f(ulong dummy)17 void board_init_f(ulong dummy)
18 {
19 	spl_early_init();
20 	preloader_console_init();
21 	timer_init();
22 	dram_init();
23 }
24 
25 /*
26  * Try to detect the boot mode. Fallback to the default,
27  * memory mapped SPI XIP booting if detection failed.
28  */
spl_boot_device(void)29 u32 spl_boot_device(void)
30 {
31 	int rc;
32 	struct udevice *scu_dev;
33 	struct ast2600_scu *scu;
34 
35 	rc = uclass_get_device_by_driver(UCLASS_CLK,
36 					 DM_DRIVER_GET(aspeed_ast2600_scu), &scu_dev);
37 	if (rc) {
38 		debug("%s: failed to get SCU driver\n", __func__);
39 		goto out;
40 	}
41 
42 	scu = devfdt_get_addr_ptr(scu_dev);
43 	if (IS_ERR_OR_NULL(scu)) {
44 		debug("%s: failed to get SCU base\n", __func__);
45 		goto out;
46 	}
47 
48 	/* boot from UART has higher priority */
49 	if (scu->hwstrap2 & SCU_HWSTRAP2_BOOT_UART)
50 		return BOOT_DEVICE_UART;
51 
52 	if (scu->hwstrap1 & SCU_HWSTRAP1_BOOT_EMMC)
53 		return BOOT_DEVICE_MMC1;
54 
55 out:
56 	return BOOT_DEVICE_RAM;
57 }
58 
spl_get_load_buffer(ssize_t offset,size_t size)59 struct legacy_img_hdr *spl_get_load_buffer(ssize_t offset, size_t size)
60 {
61 	return (struct legacy_img_hdr *)(CONFIG_SYS_LOAD_ADDR);
62 }
63 
64 #ifdef CONFIG_SPL_OS_BOOT
spl_start_uboot(void)65 int spl_start_uboot(void)
66 {
67 	/* boot linux */
68 	return 0;
69 }
70 #endif
71 
72 #ifdef CONFIG_SPL_LOAD_FIT
board_fit_config_name_match(const char * name)73 int board_fit_config_name_match(const char *name)
74 {
75 	/* just empty function now - can't decide what to choose */
76 	debug("%s: %s\n", __func__, name);
77 	return 0;
78 }
79 #endif
80