xref: /linux/arch/mips/include/asm/bootinfo.h (revision b83ba0b9df56f8404ccc6ebcc7050fb8294f0f20)
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