1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file COPYING in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1995, 1996, 2003 by Ralf Baechle
7 * Copyright (C) 1995, 1996 Andreas Busse
8 * Copyright (C) 1995, 1996 Stoned Elipot
9 * Copyright (C) 1995, 1996 Paul M. Antoine.
10 * Copyright (C) 2009       Zhang Le
11 */
12#ifndef _ASM_BOOTINFO_H
13#define _ASM_BOOTINFO_H
14
15#include <linux/types.h>
16#include <asm/setup.h>
17
18/*
19 * The MACH_ IDs are sort of equivalent to PCI product IDs.  As such the
20 * numbers do not necessarily reflect technical relations or similarities
21 * between systems.
22 */
23
24/*
25 * Valid machtype values for group unknown
26 */
27#define  MACH_UNKNOWN		0	/* whatever...			*/
28
29/*
30 * Valid machtype for group DEC
31 */
32#define  MACH_DSUNKNOWN		0
33#define  MACH_DS23100		1	/* DECstation 2100 or 3100	*/
34#define  MACH_DS5100		2	/* DECsystem 5100		*/
35#define  MACH_DS5000_200	3	/* DECstation 5000/200		*/
36#define  MACH_DS5000_1XX	4	/* DECstation 5000/120, 125, 133, 150 */
37#define  MACH_DS5000_XX		5	/* DECstation 5000/20, 25, 33, 50 */
38#define  MACH_DS5000_2X0	6	/* DECstation 5000/240, 260	*/
39#define  MACH_DS5400		7	/* DECsystem 5400		*/
40#define  MACH_DS5500		8	/* DECsystem 5500		*/
41#define  MACH_DS5800		9	/* DECsystem 5800		*/
42#define  MACH_DS5900		10	/* DECsystem 5900		*/
43
44/*
45 * Valid machtype for group Mikrotik
46 */
47#define MACH_MIKROTIK_RB532	0	/* Mikrotik RouterBoard 532	*/
48#define MACH_MIKROTIK_RB532A	1	/* Mikrotik RouterBoard 532A	*/
49
50/*
51 * Valid machtype for Loongson family
52 */
53enum loongson2ef_machine_type {
54	MACH_LOONGSON_UNKNOWN,
55	MACH_LEMOTE_FL2E,
56	MACH_LEMOTE_FL2F,
57	MACH_LEMOTE_ML2F7,
58	MACH_LEMOTE_YL2F89,
59	MACH_DEXXON_GDIUM2F10,
60	MACH_LEMOTE_NAS,
61	MACH_LEMOTE_LL2F,
62	MACH_LOONGSON_END
63};
64
65/*
66 * Valid machtype for group INGENIC
67 */
68enum ingenic_machine_type {
69	MACH_INGENIC_UNKNOWN,
70	MACH_INGENIC_JZ4720,
71	MACH_INGENIC_JZ4725,
72	MACH_INGENIC_JZ4725B,
73	MACH_INGENIC_JZ4730,
74	MACH_INGENIC_JZ4740,
75	MACH_INGENIC_JZ4750,
76	MACH_INGENIC_JZ4755,
77	MACH_INGENIC_JZ4760,
78	MACH_INGENIC_JZ4770,
79	MACH_INGENIC_JZ4775,
80	MACH_INGENIC_JZ4780,
81	MACH_INGENIC_X1000,
82	MACH_INGENIC_X1000E,
83	MACH_INGENIC_X1830,
84	MACH_INGENIC_X2000,
85	MACH_INGENIC_X2000E,
86};
87
88extern char *system_type;
89const char *get_system_type(void);
90
91extern unsigned long mips_machtype;
92
93extern void detect_memory_region(phys_addr_t start, phys_addr_t sz_min,  phys_addr_t sz_max);
94
95extern void prom_init(void);
96extern void prom_free_prom_memory(void);
97extern void prom_cleanup(void);
98
99extern void free_init_pages(const char *what,
100			    unsigned long begin, unsigned long end);
101
102extern void (*free_init_pages_eva)(void *begin, void *end);
103
104/*
105 * Initial kernel command line, usually setup by prom_init()
106 */
107extern char arcs_cmdline[COMMAND_LINE_SIZE];
108
109/*
110 * Registers a0, a1, a3 and a4 as passed to the kernel entry by firmware
111 */
112extern unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3;
113
114#ifdef CONFIG_USE_OF
115extern unsigned long fw_passed_dtb;
116#endif
117
118/*
119 * Platform memory detection hook called by arch_mem_init()
120 */
121extern void plat_mem_setup(void);
122
123#ifdef CONFIG_SWIOTLB
124/*
125 * Optional platform hook to call swiotlb_setup().
126 */
127extern void plat_swiotlb_setup(void);
128
129#else
130
131static inline void plat_swiotlb_setup(void) {}
132
133#endif /* CONFIG_SWIOTLB */
134
135#ifdef CONFIG_USE_OF
136/**
137 * plat_get_fdt() - Return a pointer to the platform's device tree blob
138 *
139 * This function provides a platform independent API to get a pointer to the
140 * flattened device tree blob. The interface between bootloader and kernel
141 * is not consistent across platforms so it is necessary to provide this
142 * API such that common startup code can locate the FDT.
143 *
144 * This is used by the KASLR code to get command line arguments and random
145 * seed from the device tree. Any platform wishing to use KASLR should
146 * provide this API and select SYS_SUPPORTS_RELOCATABLE.
147 *
148 * Return: Pointer to the flattened device tree blob.
149 */
150extern void *plat_get_fdt(void);
151
152#ifdef CONFIG_RELOCATABLE
153
154/**
155 * plat_fdt_relocated() - Update platform's information about relocated dtb
156 *
157 * This function provides a platform-independent API to set platform's
158 * information about relocated DTB if it needs to be moved due to kernel
159 * relocation occurring at boot.
160 */
161void plat_fdt_relocated(void *new_location);
162
163#endif /* CONFIG_RELOCATABLE */
164#endif /* CONFIG_USE_OF */
165
166#endif /* _ASM_BOOTINFO_H */
167