190 lines
4.8 KiB
C
190 lines
4.8 KiB
C
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1995, 1996, 2003 by Ralf Baechle
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* Copyright (C) 1995, 1996 Andreas Busse
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* Copyright (C) 1995, 1996 Stoned Elipot
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* Copyright (C) 1995, 1996 Paul M. Antoine.
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* Copyright (C) 2009 Zhang Le
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*/
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#ifndef _ASM_BOOTINFO_H
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#define _ASM_BOOTINFO_H
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#include <linux/types.h>
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#include <asm/setup.h>
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/*
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* The MACH_ IDs are sort of equivalent to PCI product IDs. As such the
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* numbers do not necessarily reflect technical relations or similarities
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* between systems.
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*/
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/*
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* Valid machtype values for group unknown
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*/
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#define MACH_UNKNOWN 0 /* whatever... */
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/*
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* Valid machtype for group DEC
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*/
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#define MACH_DSUNKNOWN 0
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#define MACH_DS23100 1 /* DECstation 2100 or 3100 */
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#define MACH_DS5100 2 /* DECsystem 5100 */
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#define MACH_DS5000_200 3 /* DECstation 5000/200 */
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#define MACH_DS5000_1XX 4 /* DECstation 5000/120, 125, 133, 150 */
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#define MACH_DS5000_XX 5 /* DECstation 5000/20, 25, 33, 50 */
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#define MACH_DS5000_2X0 6 /* DECstation 5000/240, 260 */
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#define MACH_DS5400 7 /* DECsystem 5400 */
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#define MACH_DS5500 8 /* DECsystem 5500 */
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#define MACH_DS5800 9 /* DECsystem 5800 */
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#define MACH_DS5900 10 /* DECsystem 5900 */
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/*
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* Valid machtype for group Mikrotik
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*/
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#define MACH_MIKROTIK_RB532 0 /* Mikrotik RouterBoard 532 */
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#define MACH_MIKROTIK_RB532A 1 /* Mikrotik RouterBoard 532A */
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/*
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* Valid machtype for Loongson family
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*/
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enum loongson2ef_machine_type {
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MACH_LOONGSON_UNKNOWN,
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MACH_LEMOTE_FL2E,
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MACH_LEMOTE_FL2F,
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MACH_LEMOTE_ML2F7,
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MACH_LEMOTE_YL2F89,
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MACH_DEXXON_GDIUM2F10,
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MACH_LEMOTE_NAS,
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MACH_LEMOTE_LL2F,
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MACH_LOONGSON_END
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};
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/*
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* Valid machtype for group INGENIC
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*/
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enum ingenic_machine_type {
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MACH_INGENIC_UNKNOWN,
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MACH_INGENIC_JZ4720,
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MACH_INGENIC_JZ4725,
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MACH_INGENIC_JZ4725B,
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MACH_INGENIC_JZ4730,
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MACH_INGENIC_JZ4740,
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MACH_INGENIC_JZ4750,
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MACH_INGENIC_JZ4755,
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MACH_INGENIC_JZ4760,
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MACH_INGENIC_JZ4760B,
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MACH_INGENIC_JZ4770,
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MACH_INGENIC_JZ4775,
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MACH_INGENIC_JZ4780,
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MACH_INGENIC_X1000,
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MACH_INGENIC_X1000E,
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MACH_INGENIC_X1830,
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MACH_INGENIC_X2000,
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MACH_INGENIC_X2000E,
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MACH_INGENIC_X2000H,
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MACH_INGENIC_X2100,
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};
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extern char *system_type;
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const char *get_system_type(void);
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extern unsigned long mips_machtype;
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extern void detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_addr_t sz_max);
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extern void prom_init(void);
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extern void prom_free_prom_memory(void);
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extern void prom_cleanup(void);
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extern void free_init_pages(const char *what,
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unsigned long begin, unsigned long end);
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extern void (*free_init_pages_eva)(void *begin, void *end);
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/*
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* Initial kernel command line, usually setup by prom_init()
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*/
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extern char arcs_cmdline[COMMAND_LINE_SIZE];
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/*
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* Registers a0, a1, a2 and a3 as passed to the kernel entry by firmware
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*/
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extern unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3;
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#ifdef CONFIG_USE_OF
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#include <linux/libfdt.h>
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#include <linux/of_fdt.h>
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extern char __appended_dtb[];
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static inline void *get_fdt(void)
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{
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if (IS_ENABLED(CONFIG_MIPS_RAW_APPENDED_DTB) ||
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IS_ENABLED(CONFIG_MIPS_ELF_APPENDED_DTB))
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if (fdt_magic(&__appended_dtb) == FDT_MAGIC)
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return &__appended_dtb;
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if (fw_arg0 == -2) /* UHI interface */
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return (void *)fw_arg1;
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if (IS_ENABLED(CONFIG_BUILTIN_DTB))
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if (&__dtb_start != &__dtb_end)
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return &__dtb_start;
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return NULL;
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}
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#endif
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/*
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* Platform memory detection hook called by arch_mem_init()
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*/
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extern void plat_mem_setup(void);
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#ifdef CONFIG_SWIOTLB
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/*
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* Optional platform hook to call swiotlb_setup().
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*/
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extern void plat_swiotlb_setup(void);
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#else
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static inline void plat_swiotlb_setup(void) {}
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#endif /* CONFIG_SWIOTLB */
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#ifdef CONFIG_USE_OF
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/**
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* plat_get_fdt() - Return a pointer to the platform's device tree blob
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*
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* This function provides a platform independent API to get a pointer to the
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* flattened device tree blob. The interface between bootloader and kernel
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* is not consistent across platforms so it is necessary to provide this
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* API such that common startup code can locate the FDT.
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*
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* This is used by the KASLR code to get command line arguments and random
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* seed from the device tree. Any platform wishing to use KASLR should
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* provide this API and select SYS_SUPPORTS_RELOCATABLE.
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*
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* Return: Pointer to the flattened device tree blob.
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*/
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extern void *plat_get_fdt(void);
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#ifdef CONFIG_RELOCATABLE
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/**
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* plat_fdt_relocated() - Update platform's information about relocated dtb
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*
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* This function provides a platform-independent API to set platform's
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* information about relocated DTB if it needs to be moved due to kernel
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* relocation occurring at boot.
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*/
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void plat_fdt_relocated(void *new_location);
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#endif /* CONFIG_RELOCATABLE */
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#endif /* CONFIG_USE_OF */
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#endif /* _ASM_BOOTINFO_H */
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