1 /*
2  * Copyright (C) 2014-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #include <common.h>
8 #include <spl.h>
9 #include <libfdt.h>
10 #include <nand.h>
11 #include <linux/io.h>
12 #include <../drivers/mtd/nand/denali.h>
13 
14 #include "boot-mode/boot-device.h"
15 
16 static void nand_denali_wp_disable(void)
17 {
18 #ifdef CONFIG_NAND_DENALI
19 	/*
20 	 * Since the boot rom enables the write protection for NAND boot mode,
21 	 * it must be disabled somewhere for "nand write", "nand erase", etc.
22 	 * The workaround is here to not disturb the Denali NAND controller
23 	 * driver just for a really SoC-specific thing.
24 	 */
25 	void __iomem *denali_reg = (void __iomem *)CONFIG_SYS_NAND_REGS_BASE;
26 
27 	writel(WRITE_PROTECT__FLAG, denali_reg + WRITE_PROTECT);
28 #endif
29 }
30 
31 struct uniphier_fdt_file {
32 	const char *compatible;
33 	const char *file_name;
34 };
35 
36 static const struct uniphier_fdt_file uniphier_fdt_files[] = {
37 	{ "socionext,ph1-ld4-ref", "uniphier-ph1-ld4-ref.dtb", },
38 	{ "socionext,ph1-ld6b-ref", "uniphier-ph1-ld6b-ref.dtb", },
39 	{ "socionext,ph1-ld10-ref", "uniphier-ph1-ld10-ref.dtb", },
40 	{ "socionext,ph1-pro4-ace", "uniphier-ph1-pro4-ace.dtb", },
41 	{ "socionext,ph1-pro4-ref", "uniphier-ph1-pro4-ref.dtb", },
42 	{ "socionext,ph1-pro4-sanji", "uniphier-ph1-pro4-sanji.dtb", },
43 	{ "socionext,ph1-pro5-4kbox", "uniphier-ph1-pro5-4kbox.dtb", },
44 	{ "socionext,ph1-sld3-ref", "uniphier-ph1-sld3-ref.dtb", },
45 	{ "socionext,ph1-sld8-ref", "uniphier-ph1-sld8-ref.dtb", },
46 	{ "socionext,proxstream2-gentil", "uniphier-proxstream2-gentil.dtb", },
47 	{ "socionext,proxstream2-vodka", "uniphier-proxstream2-vodka.dtb", },
48 };
49 
50 static void uniphier_set_fdt_file(void)
51 {
52 	DECLARE_GLOBAL_DATA_PTR;
53 	int i;
54 
55 	/* lookup DTB file name based on the compatible string */
56 	for (i = 0; i < ARRAY_SIZE(uniphier_fdt_files); i++) {
57 		if (!fdt_node_check_compatible(gd->fdt_blob, 0,
58 					uniphier_fdt_files[i].compatible)) {
59 			setenv("fdt_file", uniphier_fdt_files[i].file_name);
60 			return;
61 		}
62 	}
63 }
64 
65 int board_late_init(void)
66 {
67 	puts("MODE:  ");
68 
69 	switch (spl_boot_device_raw()) {
70 	case BOOT_DEVICE_MMC1:
71 		printf("eMMC Boot\n");
72 		setenv("bootmode", "emmcboot");
73 		break;
74 	case BOOT_DEVICE_NAND:
75 		printf("NAND Boot\n");
76 		setenv("bootmode", "nandboot");
77 		nand_denali_wp_disable();
78 		break;
79 	case BOOT_DEVICE_NOR:
80 		printf("NOR Boot\n");
81 		setenv("bootmode", "norboot");
82 		break;
83 	case BOOT_DEVICE_USB:
84 		printf("USB Boot\n");
85 		setenv("bootmode", "usbboot");
86 		break;
87 	default:
88 		printf("Unsupported Boot Mode\n");
89 		return -1;
90 	}
91 
92 	uniphier_set_fdt_file();
93 
94 	return 0;
95 }
96