Linux kernel mirror (for testing)
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linux
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 PMC-MSP
46 */
47#define MACH_MSP4200_EVAL 0 /* PMC-Sierra MSP4200 Evaluation */
48#define MACH_MSP4200_GW 1 /* PMC-Sierra MSP4200 Gateway demo */
49#define MACH_MSP4200_FPGA 2 /* PMC-Sierra MSP4200 Emulation */
50#define MACH_MSP7120_EVAL 3 /* PMC-Sierra MSP7120 Evaluation */
51#define MACH_MSP7120_GW 4 /* PMC-Sierra MSP7120 Residential GW */
52#define MACH_MSP7120_FPGA 5 /* PMC-Sierra MSP7120 Emulation */
53#define MACH_MSP_OTHER 255 /* PMC-Sierra unknown board type */
54
55/*
56 * Valid machtype for group Mikrotik
57 */
58#define MACH_MIKROTIK_RB532 0 /* Mikrotik RouterBoard 532 */
59#define MACH_MIKROTIK_RB532A 1 /* Mikrotik RouterBoard 532A */
60
61/*
62 * Valid machtype for Loongson family
63 */
64enum loongson_machine_type {
65 MACH_LOONGSON_UNKNOWN,
66 MACH_LEMOTE_FL2E,
67 MACH_LEMOTE_FL2F,
68 MACH_LEMOTE_ML2F7,
69 MACH_LEMOTE_YL2F89,
70 MACH_DEXXON_GDIUM2F10,
71 MACH_LEMOTE_NAS,
72 MACH_LEMOTE_LL2F,
73 MACH_LOONGSON_GENERIC,
74 MACH_LOONGSON_END
75};
76
77/*
78 * Valid machtype for group INGENIC
79 */
80#define MACH_INGENIC_JZ4730 0 /* JZ4730 SOC */
81#define MACH_INGENIC_JZ4740 1 /* JZ4740 SOC */
82#define MACH_INGENIC_JZ4770 2 /* JZ4770 SOC */
83#define MACH_INGENIC_JZ4780 3 /* JZ4780 SOC */
84
85extern char *system_type;
86const char *get_system_type(void);
87
88extern unsigned long mips_machtype;
89
90#define BOOT_MEM_MAP_MAX 32
91#define BOOT_MEM_RAM 1
92#define BOOT_MEM_ROM_DATA 2
93#define BOOT_MEM_RESERVED 3
94#define BOOT_MEM_INIT_RAM 4
95#define BOOT_MEM_NOMAP 5
96
97/*
98 * A memory map that's built upon what was determined
99 * or specified on the command line.
100 */
101struct boot_mem_map {
102 int nr_map;
103 struct boot_mem_map_entry {
104 phys_addr_t addr; /* start of memory segment */
105 phys_addr_t size; /* size of memory segment */
106 long type; /* type of memory segment */
107 } map[BOOT_MEM_MAP_MAX];
108};
109
110extern struct boot_mem_map boot_mem_map;
111
112extern void add_memory_region(phys_addr_t start, phys_addr_t size, long type);
113extern void detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_addr_t sz_max);
114
115extern void prom_init(void);
116extern void prom_free_prom_memory(void);
117
118extern void free_init_pages(const char *what,
119 unsigned long begin, unsigned long end);
120
121extern void (*free_init_pages_eva)(void *begin, void *end);
122
123/*
124 * Initial kernel command line, usually setup by prom_init()
125 */
126extern char arcs_cmdline[COMMAND_LINE_SIZE];
127
128/*
129 * Registers a0, a1, a3 and a4 as passed to the kernel entry by firmware
130 */
131extern unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3;
132
133#ifdef CONFIG_USE_OF
134extern unsigned long fw_passed_dtb;
135#endif
136
137/*
138 * Platform memory detection hook called by setup_arch
139 */
140extern void plat_mem_setup(void);
141
142#ifdef CONFIG_SWIOTLB
143/*
144 * Optional platform hook to call swiotlb_setup().
145 */
146extern void plat_swiotlb_setup(void);
147
148#else
149
150static inline void plat_swiotlb_setup(void) {}
151
152#endif /* CONFIG_SWIOTLB */
153
154#ifdef CONFIG_USE_OF
155/**
156 * plat_get_fdt() - Return a pointer to the platform's device tree blob
157 *
158 * This function provides a platform independent API to get a pointer to the
159 * flattened device tree blob. The interface between bootloader and kernel
160 * is not consistent across platforms so it is necessary to provide this
161 * API such that common startup code can locate the FDT.
162 *
163 * This is used by the KASLR code to get command line arguments and random
164 * seed from the device tree. Any platform wishing to use KASLR should
165 * provide this API and select SYS_SUPPORTS_RELOCATABLE.
166 *
167 * Return: Pointer to the flattened device tree blob.
168 */
169extern void *plat_get_fdt(void);
170
171#ifdef CONFIG_RELOCATABLE
172
173/**
174 * plat_fdt_relocated() - Update platform's information about relocated dtb
175 *
176 * This function provides a platform-independent API to set platform's
177 * information about relocated DTB if it needs to be moved due to kernel
178 * relocation occurring at boot.
179 */
180void plat_fdt_relocated(void *new_location);
181
182#endif /* CONFIG_RELOCATABLE */
183#endif /* CONFIG_USE_OF */
184
185#endif /* _ASM_BOOTINFO_H */