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Diffstat (limited to 'arch/mips/include/asm/bootinfo.h')
| -rw-r--r-- | arch/mips/include/asm/bootinfo.h | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/arch/mips/include/asm/bootinfo.h b/arch/mips/include/asm/bootinfo.h new file mode 100644 index 000000000..2128ba903 --- /dev/null +++ b/arch/mips/include/asm/bootinfo.h @@ -0,0 +1,189 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Copyright (C) 1995, 1996, 2003 by Ralf Baechle + * Copyright (C) 1995, 1996 Andreas Busse + * Copyright (C) 1995, 1996 Stoned Elipot + * Copyright (C) 1995, 1996 Paul M. Antoine. + * Copyright (C) 2009 Zhang Le + */ +#ifndef _ASM_BOOTINFO_H +#define _ASM_BOOTINFO_H + +#include <linux/types.h> +#include <asm/setup.h> + +/* + * The MACH_ IDs are sort of equivalent to PCI product IDs. As such the + * numbers do not necessarily reflect technical relations or similarities + * between systems. + */ + +/* + * Valid machtype values for group unknown + */ +#define MACH_UNKNOWN 0 /* whatever... */ + +/* + * Valid machtype for group DEC + */ +#define MACH_DSUNKNOWN 0 +#define MACH_DS23100 1 /* DECstation 2100 or 3100 */ +#define MACH_DS5100 2 /* DECsystem 5100 */ +#define MACH_DS5000_200 3 /* DECstation 5000/200 */ +#define MACH_DS5000_1XX 4 /* DECstation 5000/120, 125, 133, 150 */ +#define MACH_DS5000_XX 5 /* DECstation 5000/20, 25, 33, 50 */ +#define MACH_DS5000_2X0 6 /* DECstation 5000/240, 260 */ +#define MACH_DS5400 7 /* DECsystem 5400 */ +#define MACH_DS5500 8 /* DECsystem 5500 */ +#define MACH_DS5800 9 /* DECsystem 5800 */ +#define MACH_DS5900 10 /* DECsystem 5900 */ + +/* + * Valid machtype for group Mikrotik + */ +#define MACH_MIKROTIK_RB532 0 /* Mikrotik RouterBoard 532 */ +#define MACH_MIKROTIK_RB532A 1 /* Mikrotik RouterBoard 532A */ + +/* + * Valid machtype for Loongson family + */ +enum loongson2ef_machine_type { + MACH_LOONGSON_UNKNOWN, + MACH_LEMOTE_FL2E, + MACH_LEMOTE_FL2F, + MACH_LEMOTE_ML2F7, + MACH_LEMOTE_YL2F89, + MACH_DEXXON_GDIUM2F10, + MACH_LEMOTE_NAS, + MACH_LEMOTE_LL2F, + MACH_LOONGSON_END +}; + +/* + * Valid machtype for group INGENIC + */ +enum ingenic_machine_type { + MACH_INGENIC_UNKNOWN, + MACH_INGENIC_JZ4720, + MACH_INGENIC_JZ4725, + MACH_INGENIC_JZ4725B, + MACH_INGENIC_JZ4730, + MACH_INGENIC_JZ4740, + MACH_INGENIC_JZ4750, + MACH_INGENIC_JZ4755, + MACH_INGENIC_JZ4760, + MACH_INGENIC_JZ4760B, + MACH_INGENIC_JZ4770, + MACH_INGENIC_JZ4775, + MACH_INGENIC_JZ4780, + MACH_INGENIC_X1000, + MACH_INGENIC_X1000E, + MACH_INGENIC_X1830, + MACH_INGENIC_X2000, + MACH_INGENIC_X2000E, + MACH_INGENIC_X2000H, + MACH_INGENIC_X2100, +}; + +extern char *system_type; +const char *get_system_type(void); + +extern unsigned long mips_machtype; + +extern void detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_addr_t sz_max); + +extern void prom_init(void); +extern void prom_free_prom_memory(void); +extern void prom_cleanup(void); + +extern void free_init_pages(const char *what, + unsigned long begin, unsigned long end); + +extern void (*free_init_pages_eva)(void *begin, void *end); + +/* + * Initial kernel command line, usually setup by prom_init() + */ +extern char arcs_cmdline[COMMAND_LINE_SIZE]; + +/* + * Registers a0, a1, a2 and a3 as passed to the kernel entry by firmware + */ +extern unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3; + +#ifdef CONFIG_USE_OF +#include <linux/libfdt.h> +#include <linux/of_fdt.h> + +extern char __appended_dtb[]; + +static inline void *get_fdt(void) +{ + if (IS_ENABLED(CONFIG_MIPS_RAW_APPENDED_DTB) || + IS_ENABLED(CONFIG_MIPS_ELF_APPENDED_DTB)) + if (fdt_magic(&__appended_dtb) == FDT_MAGIC) + return &__appended_dtb; + + if (fw_arg0 == -2) /* UHI interface */ + return (void *)fw_arg1; + + if (IS_ENABLED(CONFIG_BUILTIN_DTB)) + if (&__dtb_start != &__dtb_end) + return &__dtb_start; + + return NULL; +} +#endif + +/* + * Platform memory detection hook called by arch_mem_init() + */ +extern void plat_mem_setup(void); + +#ifdef CONFIG_SWIOTLB +/* + * Optional platform hook to call swiotlb_setup(). + */ +extern void plat_swiotlb_setup(void); + +#else + +static inline void plat_swiotlb_setup(void) {} + +#endif /* CONFIG_SWIOTLB */ + +#ifdef CONFIG_USE_OF +/** + * plat_get_fdt() - Return a pointer to the platform's device tree blob + * + * This function provides a platform independent API to get a pointer to the + * flattened device tree blob. The interface between bootloader and kernel + * is not consistent across platforms so it is necessary to provide this + * API such that common startup code can locate the FDT. + * + * This is used by the KASLR code to get command line arguments and random + * seed from the device tree. Any platform wishing to use KASLR should + * provide this API and select SYS_SUPPORTS_RELOCATABLE. + * + * Return: Pointer to the flattened device tree blob. + */ +extern void *plat_get_fdt(void); + +#ifdef CONFIG_RELOCATABLE + +/** + * plat_fdt_relocated() - Update platform's information about relocated dtb + * + * This function provides a platform-independent API to set platform's + * information about relocated DTB if it needs to be moved due to kernel + * relocation occurring at boot. + */ +void plat_fdt_relocated(void *new_location); + +#endif /* CONFIG_RELOCATABLE */ +#endif /* CONFIG_USE_OF */ + +#endif /* _ASM_BOOTINFO_H */ |