v4.19.13 snapshot.
diff --git a/arch/mips/include/asm/bootinfo.h b/arch/mips/include/asm/bootinfo.h
new file mode 100644
index 0000000..a301a8f
--- /dev/null
+++ b/arch/mips/include/asm/bootinfo.h
@@ -0,0 +1,184 @@
+/*
+ * 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 PMC-MSP
+ */
+#define MACH_MSP4200_EVAL 0 /* PMC-Sierra MSP4200 Evaluation */
+#define MACH_MSP4200_GW 1 /* PMC-Sierra MSP4200 Gateway demo */
+#define MACH_MSP4200_FPGA 2 /* PMC-Sierra MSP4200 Emulation */
+#define MACH_MSP7120_EVAL 3 /* PMC-Sierra MSP7120 Evaluation */
+#define MACH_MSP7120_GW 4 /* PMC-Sierra MSP7120 Residential GW */
+#define MACH_MSP7120_FPGA 5 /* PMC-Sierra MSP7120 Emulation */
+#define MACH_MSP_OTHER 255 /* PMC-Sierra unknown board type */
+
+/*
+ * 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 loongson_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_GENERIC,
+ MACH_LOONGSON_END
+};
+
+/*
+ * Valid machtype for group INGENIC
+ */
+#define MACH_INGENIC_JZ4730 0 /* JZ4730 SOC */
+#define MACH_INGENIC_JZ4740 1 /* JZ4740 SOC */
+#define MACH_INGENIC_JZ4770 2 /* JZ4770 SOC */
+#define MACH_INGENIC_JZ4780 3 /* JZ4780 SOC */
+
+extern char *system_type;
+const char *get_system_type(void);
+
+extern unsigned long mips_machtype;
+
+#define BOOT_MEM_MAP_MAX 32
+#define BOOT_MEM_RAM 1
+#define BOOT_MEM_ROM_DATA 2
+#define BOOT_MEM_RESERVED 3
+#define BOOT_MEM_INIT_RAM 4
+
+/*
+ * A memory map that's built upon what was determined
+ * or specified on the command line.
+ */
+struct boot_mem_map {
+ int nr_map;
+ struct boot_mem_map_entry {
+ phys_addr_t addr; /* start of memory segment */
+ phys_addr_t size; /* size of memory segment */
+ long type; /* type of memory segment */
+ } map[BOOT_MEM_MAP_MAX];
+};
+
+extern struct boot_mem_map boot_mem_map;
+
+extern void add_memory_region(phys_addr_t start, phys_addr_t size, long type);
+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 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, a3 and a4 as passed to the kernel entry by firmware
+ */
+extern unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3;
+
+#ifdef CONFIG_USE_OF
+extern unsigned long fw_passed_dtb;
+#endif
+
+/*
+ * Platform memory detection hook called by setup_arch
+ */
+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 */