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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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0063fdede6
Add plat_fdt_relocated(void*) API to allow the kernel relocation code to update platform's information about the DTB location if the DTB had to be moved due to being placed in a location used by the relocated kernel. Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/14611/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
183 lines
5.1 KiB
C
183 lines
5.1 KiB
C
/*
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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 PMC-MSP
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*/
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#define MACH_MSP4200_EVAL 0 /* PMC-Sierra MSP4200 Evaluation */
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#define MACH_MSP4200_GW 1 /* PMC-Sierra MSP4200 Gateway demo */
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#define MACH_MSP4200_FPGA 2 /* PMC-Sierra MSP4200 Emulation */
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#define MACH_MSP7120_EVAL 3 /* PMC-Sierra MSP7120 Evaluation */
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#define MACH_MSP7120_GW 4 /* PMC-Sierra MSP7120 Residential GW */
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#define MACH_MSP7120_FPGA 5 /* PMC-Sierra MSP7120 Emulation */
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#define MACH_MSP_OTHER 255 /* PMC-Sierra unknown board type */
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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 loongson_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_GENERIC,
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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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#define MACH_INGENIC_JZ4730 0 /* JZ4730 SOC */
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#define MACH_INGENIC_JZ4740 1 /* JZ4740 SOC */
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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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#define BOOT_MEM_MAP_MAX 32
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#define BOOT_MEM_RAM 1
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#define BOOT_MEM_ROM_DATA 2
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#define BOOT_MEM_RESERVED 3
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#define BOOT_MEM_INIT_RAM 4
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/*
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* A memory map that's built upon what was determined
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* or specified on the command line.
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*/
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struct boot_mem_map {
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int nr_map;
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struct boot_mem_map_entry {
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phys_addr_t addr; /* start of memory segment */
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phys_addr_t size; /* size of memory segment */
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long type; /* type of memory segment */
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} map[BOOT_MEM_MAP_MAX];
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};
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extern struct boot_mem_map boot_mem_map;
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extern void add_memory_region(phys_addr_t start, phys_addr_t size, long type);
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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 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, a3 and a4 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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extern unsigned long fw_passed_dtb;
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#endif
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/*
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* Platform memory detection hook called by setup_arch
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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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