arch/mips/include/asm/bootinfo.h

   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
  83 extern char *system_type;
  84 const char *get_system_type(void);
  85
  86 extern unsigned long mips_machtype;
  87
  88 #define BOOT_MEM_MAP_MAX        32
  89 #define BOOT_MEM_RAM            1
  90 #define BOOT_MEM_ROM_DATA       2
  91 #define BOOT_MEM_RESERVED       3
  92 #define BOOT_MEM_INIT_RAM       4
  93
  94 /*
  95  * A memory map that's built upon what was determined
  96  * or specified on the command line.
  97  */
  98 struct boot_mem_map {
  99         int nr_map;
 100         struct boot_mem_map_entry {
 101                 phys_addr_t addr;       /* start of memory segment */
 102                 phys_addr_t size;       /* size of memory segment */
 103                 long type;              /* type of memory segment */
 104         } map[BOOT_MEM_MAP_MAX];
 105 };
 106
 107 extern struct boot_mem_map boot_mem_map;
 108
 109 extern void add_memory_region(phys_addr_t start, phys_addr_t size, long type);
 110 extern void detect_memory_region(phys_addr_t start, phys_addr_t sz_min,  phys_addr_t sz_max);
 111
 112 extern void prom_init(void);
 113 extern void prom_free_prom_memory(void);
 114
 115 extern void free_init_pages(const char *what,
 116                             unsigned long begin, unsigned long end);
 117
 118 extern void (*free_init_pages_eva)(void *begin, void *end);
 119
 120 /*
 121  * Initial kernel command line, usually setup by prom_init()
 122  */
 123 extern char arcs_cmdline[COMMAND_LINE_SIZE];
 124
 125 /*
 126  * Registers a0, a1, a3 and a4 as passed to the kernel entry by firmware
 127  */
 128 extern unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3;
 129
 130 #ifdef CONFIG_USE_OF
 131 extern unsigned long fw_passed_dtb;
 132 #endif
 133
 134 /*
 135  * Platform memory detection hook called by setup_arch
 136  */
 137 extern void plat_mem_setup(void);
 138
 139 #ifdef CONFIG_SWIOTLB
 140 /*
 141  * Optional platform hook to call swiotlb_setup().
 142  */
 143 extern void plat_swiotlb_setup(void);
 144
 145 #else
 146
 147 static inline void plat_swiotlb_setup(void) {}
 148
 149 #endif /* CONFIG_SWIOTLB */
 150
 151 #ifdef CONFIG_USE_OF
 152 /**
 153  * plat_get_fdt() - Return a pointer to the platform's device tree blob
 154  *
 155  * This function provides a platform independent API to get a pointer to the
 156  * flattened device tree blob. The interface between bootloader and kernel
 157  * is not consistent across platforms so it is necessary to provide this
 158  * API such that common startup code can locate the FDT.
 159  *
 160  * This is used by the KASLR code to get command line arguments and random
 161  * seed from the device tree. Any platform wishing to use KASLR should
 162  * provide this API and select SYS_SUPPORTS_RELOCATABLE.
 163  *
 164  * Return: Pointer to the flattened device tree blob.
 165  */
 166 extern void *plat_get_fdt(void);
 167 #endif /* CONFIG_USE_OF */
 168
 169 #endif /* _ASM_BOOTINFO_H */