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 83extern char *system_type; 84const char *get_system_type(void); 85 86extern 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 */ 98struct 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 107extern struct boot_mem_map boot_mem_map; 108 109extern void add_memory_region(phys_addr_t start, phys_addr_t size, long type); 110extern void detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_addr_t sz_max); 111 112extern void prom_init(void); 113extern void prom_free_prom_memory(void); 114 115extern void free_init_pages(const char *what, 116 unsigned long begin, unsigned long end); 117 118extern void (*free_init_pages_eva)(void *begin, void *end); 119 120/* 121 * Initial kernel command line, usually setup by prom_init() 122 */ 123extern char arcs_cmdline[COMMAND_LINE_SIZE]; 124 125/* 126 * Registers a0, a1, a3 and a4 as passed to the kernel entry by firmware 127 */ 128extern unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3; 129 130#ifdef CONFIG_USE_OF 131extern unsigned long fw_passed_dtb; 132#endif 133 134/* 135 * Platform memory detection hook called by setup_arch 136 */ 137extern void plat_mem_setup(void); 138 139#ifdef CONFIG_SWIOTLB 140/* 141 * Optional platform hook to call swiotlb_setup(). 142 */ 143extern void plat_swiotlb_setup(void); 144 145#else 146 147static 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 */ 166extern void *plat_get_fdt(void); 167 168#ifdef CONFIG_RELOCATABLE 169 170/** 171 * plat_fdt_relocated() - Update platform's information about relocated dtb 172 * 173 * This function provides a platform-independent API to set platform's 174 * information about relocated DTB if it needs to be moved due to kernel 175 * relocation occurring at boot. 176 */ 177void plat_fdt_relocated(void *new_location); 178 179#endif /* CONFIG_RELOCATABLE */ 180#endif /* CONFIG_USE_OF */ 181 182#endif /* _ASM_BOOTINFO_H */ 183