1384740dcSRalf Baechle /* 2384740dcSRalf Baechle * This file is subject to the terms and conditions of the GNU General Public 3384740dcSRalf Baechle * License. See the file COPYING in the main directory of this archive 4384740dcSRalf Baechle * for more details. 5384740dcSRalf Baechle * 6384740dcSRalf Baechle * Copyright (C) 1995, 1996, 2003 by Ralf Baechle 7384740dcSRalf Baechle * Copyright (C) 1995, 1996 Andreas Busse 8384740dcSRalf Baechle * Copyright (C) 1995, 1996 Stoned Elipot 9384740dcSRalf Baechle * Copyright (C) 1995, 1996 Paul M. Antoine. 103209e70eSWu Zhangjin * Copyright (C) 2009 Zhang Le 11384740dcSRalf Baechle */ 12384740dcSRalf Baechle #ifndef _ASM_BOOTINFO_H 13384740dcSRalf Baechle #define _ASM_BOOTINFO_H 14384740dcSRalf Baechle 15384740dcSRalf Baechle #include <linux/types.h> 16384740dcSRalf Baechle #include <asm/setup.h> 17384740dcSRalf Baechle 18384740dcSRalf Baechle /* 19384740dcSRalf Baechle * The MACH_ IDs are sort of equivalent to PCI product IDs. As such the 20384740dcSRalf Baechle * numbers do not necessarily reflect technical relations or similarities 21384740dcSRalf Baechle * between systems. 22384740dcSRalf Baechle */ 23384740dcSRalf Baechle 24384740dcSRalf Baechle /* 25384740dcSRalf Baechle * Valid machtype values for group unknown 26384740dcSRalf Baechle */ 27384740dcSRalf Baechle #define MACH_UNKNOWN 0 /* whatever... */ 28384740dcSRalf Baechle 29384740dcSRalf Baechle /* 30384740dcSRalf Baechle * Valid machtype for group DEC 31384740dcSRalf Baechle */ 32384740dcSRalf Baechle #define MACH_DSUNKNOWN 0 33384740dcSRalf Baechle #define MACH_DS23100 1 /* DECstation 2100 or 3100 */ 34384740dcSRalf Baechle #define MACH_DS5100 2 /* DECsystem 5100 */ 35384740dcSRalf Baechle #define MACH_DS5000_200 3 /* DECstation 5000/200 */ 36384740dcSRalf Baechle #define MACH_DS5000_1XX 4 /* DECstation 5000/120, 125, 133, 150 */ 37384740dcSRalf Baechle #define MACH_DS5000_XX 5 /* DECstation 5000/20, 25, 33, 50 */ 38384740dcSRalf Baechle #define MACH_DS5000_2X0 6 /* DECstation 5000/240, 260 */ 39384740dcSRalf Baechle #define MACH_DS5400 7 /* DECsystem 5400 */ 40384740dcSRalf Baechle #define MACH_DS5500 8 /* DECsystem 5500 */ 41384740dcSRalf Baechle #define MACH_DS5800 9 /* DECsystem 5800 */ 42384740dcSRalf Baechle #define MACH_DS5900 10 /* DECsystem 5900 */ 43384740dcSRalf Baechle 44384740dcSRalf Baechle /* 45384740dcSRalf Baechle * Valid machtype for group Mikrotik 46384740dcSRalf Baechle */ 47384740dcSRalf Baechle #define MACH_MIKROTIK_RB532 0 /* Mikrotik RouterBoard 532 */ 48384740dcSRalf Baechle #define MACH_MIKROTIK_RB532A 1 /* Mikrotik RouterBoard 532A */ 49384740dcSRalf Baechle 503209e70eSWu Zhangjin /* 513209e70eSWu Zhangjin * Valid machtype for Loongson family 523209e70eSWu Zhangjin */ 531bdb7b76SJiaxun Yang enum loongson2ef_machine_type { 545f6d693eSHuacai Chen MACH_LOONGSON_UNKNOWN, 555f6d693eSHuacai Chen MACH_LEMOTE_FL2E, 565f6d693eSHuacai Chen MACH_LEMOTE_FL2F, 575f6d693eSHuacai Chen MACH_LEMOTE_ML2F7, 585f6d693eSHuacai Chen MACH_LEMOTE_YL2F89, 595f6d693eSHuacai Chen MACH_DEXXON_GDIUM2F10, 605f6d693eSHuacai Chen MACH_LEMOTE_NAS, 615f6d693eSHuacai Chen MACH_LEMOTE_LL2F, 625f6d693eSHuacai Chen MACH_LOONGSON_END 635f6d693eSHuacai Chen }; 643209e70eSWu Zhangjin 6583ccf69dSLars-Peter Clausen /* 6683ccf69dSLars-Peter Clausen * Valid machtype for group INGENIC 6783ccf69dSLars-Peter Clausen */ 6868c48f7cSPaul Cercueil enum ingenic_machine_type { 6968c48f7cSPaul Cercueil MACH_INGENIC_UNKNOWN, 7068c48f7cSPaul Cercueil MACH_INGENIC_JZ4720, 7168c48f7cSPaul Cercueil MACH_INGENIC_JZ4725, 7268c48f7cSPaul Cercueil MACH_INGENIC_JZ4725B, 7368c48f7cSPaul Cercueil MACH_INGENIC_JZ4730, 7468c48f7cSPaul Cercueil MACH_INGENIC_JZ4740, 7568c48f7cSPaul Cercueil MACH_INGENIC_JZ4750, 7668c48f7cSPaul Cercueil MACH_INGENIC_JZ4755, 7768c48f7cSPaul Cercueil MACH_INGENIC_JZ4760, 7868c48f7cSPaul Cercueil MACH_INGENIC_JZ4770, 7968c48f7cSPaul Cercueil MACH_INGENIC_JZ4775, 8068c48f7cSPaul Cercueil MACH_INGENIC_JZ4780, 8168c48f7cSPaul Cercueil MACH_INGENIC_X1000, 82a9fee3a5S周琰杰 (Zhou Yanjie) MACH_INGENIC_X1000E, 8368c48f7cSPaul Cercueil MACH_INGENIC_X1830, 840d10d17bS周琰杰 (Zhou Yanjie) MACH_INGENIC_X2000, 85a9fee3a5S周琰杰 (Zhou Yanjie) MACH_INGENIC_X2000E, 8668c48f7cSPaul Cercueil }; 8783ccf69dSLars-Peter Clausen 88384740dcSRalf Baechle extern char *system_type; 89384740dcSRalf Baechle const char *get_system_type(void); 90384740dcSRalf Baechle 91384740dcSRalf Baechle extern unsigned long mips_machtype; 92384740dcSRalf Baechle 9315d45cceSRalf Baechle extern void detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_addr_t sz_max); 94384740dcSRalf Baechle 95384740dcSRalf Baechle extern void prom_init(void); 96384740dcSRalf Baechle extern void prom_free_prom_memory(void); 97c0de00b2SThomas Bogendoerfer extern void prom_cleanup(void); 98384740dcSRalf Baechle 99384740dcSRalf Baechle extern void free_init_pages(const char *what, 100384740dcSRalf Baechle unsigned long begin, unsigned long end); 101384740dcSRalf Baechle 1020893d3fbSMarkos Chandras extern void (*free_init_pages_eva)(void *begin, void *end); 1030893d3fbSMarkos Chandras 104384740dcSRalf Baechle /* 105384740dcSRalf Baechle * Initial kernel command line, usually setup by prom_init() 106384740dcSRalf Baechle */ 1077580c9c3SDmitri Vorobiev extern char arcs_cmdline[COMMAND_LINE_SIZE]; 108384740dcSRalf Baechle 109384740dcSRalf Baechle /* 110384740dcSRalf Baechle * Registers a0, a1, a3 and a4 as passed to the kernel entry by firmware 111384740dcSRalf Baechle */ 112384740dcSRalf Baechle extern unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3; 113384740dcSRalf Baechle 11415f37e15SJonas Gorski #ifdef CONFIG_USE_OF 115*b83ba0b9SThomas Bogendoerfer #include <linux/libfdt.h> 116*b83ba0b9SThomas Bogendoerfer #include <linux/of_fdt.h> 117*b83ba0b9SThomas Bogendoerfer 118*b83ba0b9SThomas Bogendoerfer extern char __appended_dtb[]; 119*b83ba0b9SThomas Bogendoerfer 120*b83ba0b9SThomas Bogendoerfer static inline void *get_fdt(void) 121*b83ba0b9SThomas Bogendoerfer { 122*b83ba0b9SThomas Bogendoerfer if (IS_ENABLED(CONFIG_MIPS_RAW_APPENDED_DTB) || 123*b83ba0b9SThomas Bogendoerfer IS_ENABLED(CONFIG_MIPS_ELF_APPENDED_DTB)) 124*b83ba0b9SThomas Bogendoerfer if (fdt_magic(&__appended_dtb) == FDT_MAGIC) 125*b83ba0b9SThomas Bogendoerfer return &__appended_dtb; 126*b83ba0b9SThomas Bogendoerfer 127*b83ba0b9SThomas Bogendoerfer if (fw_arg0 == -2) /* UHI interface */ 128*b83ba0b9SThomas Bogendoerfer return (void *)fw_arg1; 129*b83ba0b9SThomas Bogendoerfer 130*b83ba0b9SThomas Bogendoerfer if (IS_ENABLED(CONFIG_BUILTIN_DTB)) 131*b83ba0b9SThomas Bogendoerfer if (&__dtb_start != &__dtb_end) 132*b83ba0b9SThomas Bogendoerfer return &__dtb_start; 133*b83ba0b9SThomas Bogendoerfer 134*b83ba0b9SThomas Bogendoerfer return NULL; 135*b83ba0b9SThomas Bogendoerfer } 13615f37e15SJonas Gorski #endif 13715f37e15SJonas Gorski 138384740dcSRalf Baechle /* 1392a3d47c9STiezhu Yang * Platform memory detection hook called by arch_mem_init() 140384740dcSRalf Baechle */ 141384740dcSRalf Baechle extern void plat_mem_setup(void); 142384740dcSRalf Baechle 143ee71b7d2SDavid Daney #ifdef CONFIG_SWIOTLB 144ee71b7d2SDavid Daney /* 145ee71b7d2SDavid Daney * Optional platform hook to call swiotlb_setup(). 146ee71b7d2SDavid Daney */ 147ee71b7d2SDavid Daney extern void plat_swiotlb_setup(void); 148ee71b7d2SDavid Daney 149ee71b7d2SDavid Daney #else 150ee71b7d2SDavid Daney 151ee71b7d2SDavid Daney static inline void plat_swiotlb_setup(void) {} 152ee71b7d2SDavid Daney 153ee71b7d2SDavid Daney #endif /* CONFIG_SWIOTLB */ 154ee71b7d2SDavid Daney 1555e7c1c91SMatt Redfearn #ifdef CONFIG_USE_OF 1565e7c1c91SMatt Redfearn /** 1575e7c1c91SMatt Redfearn * plat_get_fdt() - Return a pointer to the platform's device tree blob 1585e7c1c91SMatt Redfearn * 1595e7c1c91SMatt Redfearn * This function provides a platform independent API to get a pointer to the 1605e7c1c91SMatt Redfearn * flattened device tree blob. The interface between bootloader and kernel 1615e7c1c91SMatt Redfearn * is not consistent across platforms so it is necessary to provide this 1625e7c1c91SMatt Redfearn * API such that common startup code can locate the FDT. 1635e7c1c91SMatt Redfearn * 1645e7c1c91SMatt Redfearn * This is used by the KASLR code to get command line arguments and random 1655e7c1c91SMatt Redfearn * seed from the device tree. Any platform wishing to use KASLR should 1665e7c1c91SMatt Redfearn * provide this API and select SYS_SUPPORTS_RELOCATABLE. 1675e7c1c91SMatt Redfearn * 1685e7c1c91SMatt Redfearn * Return: Pointer to the flattened device tree blob. 1695e7c1c91SMatt Redfearn */ 1705e7c1c91SMatt Redfearn extern void *plat_get_fdt(void); 1710063fdedSMarcin Nowakowski 1720063fdedSMarcin Nowakowski #ifdef CONFIG_RELOCATABLE 1730063fdedSMarcin Nowakowski 1740063fdedSMarcin Nowakowski /** 1750063fdedSMarcin Nowakowski * plat_fdt_relocated() - Update platform's information about relocated dtb 1760063fdedSMarcin Nowakowski * 1770063fdedSMarcin Nowakowski * This function provides a platform-independent API to set platform's 1780063fdedSMarcin Nowakowski * information about relocated DTB if it needs to be moved due to kernel 1790063fdedSMarcin Nowakowski * relocation occurring at boot. 1800063fdedSMarcin Nowakowski */ 1810063fdedSMarcin Nowakowski void plat_fdt_relocated(void *new_location); 1820063fdedSMarcin Nowakowski 1830063fdedSMarcin Nowakowski #endif /* CONFIG_RELOCATABLE */ 1845e7c1c91SMatt Redfearn #endif /* CONFIG_USE_OF */ 1855e7c1c91SMatt Redfearn 186384740dcSRalf Baechle #endif /* _ASM_BOOTINFO_H */ 187