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 96/* 97 * A memory map that's built upon what was determined 98 * or specified on the command line. 99 */ 100struct 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 109extern struct boot_mem_map boot_mem_map; 110 111extern void add_memory_region(phys_addr_t start, phys_addr_t size, long type); 112extern void detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_addr_t sz_max); 113 114extern void prom_init(void); 115extern void prom_free_prom_memory(void); 116 117extern void free_init_pages(const char *what, 118 unsigned long begin, unsigned long end); 119 120extern void (*free_init_pages_eva)(void *begin, void *end); 121 122/* 123 * Initial kernel command line, usually setup by prom_init() 124 */ 125extern char arcs_cmdline[COMMAND_LINE_SIZE]; 126 127/* 128 * Registers a0, a1, a3 and a4 as passed to the kernel entry by firmware 129 */ 130extern unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3; 131 132#ifdef CONFIG_USE_OF 133extern unsigned long fw_passed_dtb; 134#endif 135 136/* 137 * Platform memory detection hook called by setup_arch 138 */ 139extern void plat_mem_setup(void); 140 141#ifdef CONFIG_SWIOTLB 142/* 143 * Optional platform hook to call swiotlb_setup(). 144 */ 145extern void plat_swiotlb_setup(void); 146 147#else 148 149static 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 */ 168extern 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 */ 179void plat_fdt_relocated(void *new_location); 180 181#endif /* CONFIG_RELOCATABLE */ 182#endif /* CONFIG_USE_OF */ 183 184#endif /* _ASM_BOOTINFO_H */ 185