Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
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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 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 */
68#define MACH_INGENIC_JZ4730 0 /* JZ4730 SOC */
69#define MACH_INGENIC_JZ4740 1 /* JZ4740 SOC */
70#define MACH_INGENIC_JZ4770 2 /* JZ4770 SOC */
71#define MACH_INGENIC_JZ4780 3 /* JZ4780 SOC */
72#define MACH_INGENIC_X1000 4 /* X1000 SOC */
73#define MACH_INGENIC_X1830 5 /* X1830 SOC */
74
75extern char *system_type;
76const char *get_system_type(void);
77
78extern unsigned long mips_machtype;
79
80#define BOOT_MEM_RAM 1
81#define BOOT_MEM_ROM_DATA 2
82#define BOOT_MEM_RESERVED 3
83#define BOOT_MEM_INIT_RAM 4
84#define BOOT_MEM_NOMAP 5
85
86extern void add_memory_region(phys_addr_t start, phys_addr_t size, long type);
87extern void detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_addr_t sz_max);
88
89extern void prom_init(void);
90extern void prom_free_prom_memory(void);
91extern void prom_cleanup(void);
92
93extern void free_init_pages(const char *what,
94 unsigned long begin, unsigned long end);
95
96extern void (*free_init_pages_eva)(void *begin, void *end);
97
98/*
99 * Initial kernel command line, usually setup by prom_init()
100 */
101extern char arcs_cmdline[COMMAND_LINE_SIZE];
102
103/*
104 * Registers a0, a1, a3 and a4 as passed to the kernel entry by firmware
105 */
106extern unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3;
107
108#ifdef CONFIG_USE_OF
109extern unsigned long fw_passed_dtb;
110#endif
111
112/*
113 * Platform memory detection hook called by arch_mem_init()
114 */
115extern void plat_mem_setup(void);
116
117#ifdef CONFIG_SWIOTLB
118/*
119 * Optional platform hook to call swiotlb_setup().
120 */
121extern void plat_swiotlb_setup(void);
122
123#else
124
125static inline void plat_swiotlb_setup(void) {}
126
127#endif /* CONFIG_SWIOTLB */
128
129#ifdef CONFIG_USE_OF
130/**
131 * plat_get_fdt() - Return a pointer to the platform's device tree blob
132 *
133 * This function provides a platform independent API to get a pointer to the
134 * flattened device tree blob. The interface between bootloader and kernel
135 * is not consistent across platforms so it is necessary to provide this
136 * API such that common startup code can locate the FDT.
137 *
138 * This is used by the KASLR code to get command line arguments and random
139 * seed from the device tree. Any platform wishing to use KASLR should
140 * provide this API and select SYS_SUPPORTS_RELOCATABLE.
141 *
142 * Return: Pointer to the flattened device tree blob.
143 */
144extern void *plat_get_fdt(void);
145
146#ifdef CONFIG_RELOCATABLE
147
148/**
149 * plat_fdt_relocated() - Update platform's information about relocated dtb
150 *
151 * This function provides a platform-independent API to set platform's
152 * information about relocated DTB if it needs to be moved due to kernel
153 * relocation occurring at boot.
154 */
155void plat_fdt_relocated(void *new_location);
156
157#endif /* CONFIG_RELOCATABLE */
158#endif /* CONFIG_USE_OF */
159
160#endif /* _ASM_BOOTINFO_H */