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 */
64 enum 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
85 extern char *system_type;
86 const char *get_system_type(void);
87
88 extern 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
96 /*
97 * A memory map that's built upon what was determined
98 * or specified on the command line.
99 */
100 struct boot_mem_map {
101 int nr_map;
102 struct boot_mem_map_entry {
103 phys_addr_t addr; /* start of memory segment */
104 phys_addr_t size; /* size of memory segment */
105 long type; /* type of memory segment */
106 } map[BOOT_MEM_MAP_MAX];
107 };
108
109 extern struct boot_mem_map boot_mem_map;
110
111 extern void add_memory_region(phys_addr_t start, phys_addr_t size, long type);
112 extern void detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_addr_t sz_max);
113
114 extern void prom_init(void);
115 extern void prom_free_prom_memory(void);
116
117 extern void free_init_pages(const char *what,
118 unsigned long begin, unsigned long end);
119
120 extern void (*free_init_pages_eva)(void *begin, void *end);
121
122 /*
123 * Initial kernel command line, usually setup by prom_init()
124 */
125 extern char arcs_cmdline[COMMAND_LINE_SIZE];
126
127 /*
128 * Registers a0, a1, a3 and a4 as passed to the kernel entry by firmware
129 */
130 extern unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3;
131
132 #ifdef CONFIG_USE_OF
133 extern unsigned long fw_passed_dtb;
134 #endif
135
136 /*
137 * Platform memory detection hook called by setup_arch
138 */
139 extern void plat_mem_setup(void);
140
141 #ifdef CONFIG_SWIOTLB
142 /*
143 * Optional platform hook to call swiotlb_setup().
144 */
145 extern void plat_swiotlb_setup(void);
146
147 #else
148
plat_swiotlb_setup(void)149 static inline void plat_swiotlb_setup(void) {}
150
151 #endif /* CONFIG_SWIOTLB */
152
153 #ifdef CONFIG_USE_OF
154 /**
155 * plat_get_fdt() - Return a pointer to the platform's device tree blob
156 *
157 * This function provides a platform independent API to get a pointer to the
158 * flattened device tree blob. The interface between bootloader and kernel
159 * is not consistent across platforms so it is necessary to provide this
160 * API such that common startup code can locate the FDT.
161 *
162 * This is used by the KASLR code to get command line arguments and random
163 * seed from the device tree. Any platform wishing to use KASLR should
164 * provide this API and select SYS_SUPPORTS_RELOCATABLE.
165 *
166 * Return: Pointer to the flattened device tree blob.
167 */
168 extern void *plat_get_fdt(void);
169
170 #ifdef CONFIG_RELOCATABLE
171
172 /**
173 * plat_fdt_relocated() - Update platform's information about relocated dtb
174 *
175 * This function provides a platform-independent API to set platform's
176 * information about relocated DTB if it needs to be moved due to kernel
177 * relocation occurring at boot.
178 */
179 void plat_fdt_relocated(void *new_location);
180
181 #endif /* CONFIG_RELOCATABLE */
182 #endif /* CONFIG_USE_OF */
183
184 #endif /* _ASM_BOOTINFO_H */
185
