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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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15f37e1588
Instead of rewriting the arguments to match the UHI spec, store the address of a appended or UHI supplied dtb in fw_supplied_dtb. That way the original bootloader arugments are kept intact while still making the use of an appended dtb invisible for mach code. Mach code can still find out if it is an appended dtb by comparing fw_arg1 with fw_supplied_dtb. Signed-off-by: Jonas Gorski <jogo@openwrt.org> Cc: Kevin Cernekee <cernekee@gmail.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: John Crispin <john@phrozen.org> Cc: Paul Burton <paul.burton@imgtec.com> Cc: James Hogan <james.hogan@imgtec.com> Cc: Alban Bedel <albeu@free.fr> Cc: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us> Cc: Antony Pavlov <antonynpavlov@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/13699/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
170 lines
4.7 KiB
C
170 lines
4.7 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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#endif /* CONFIG_USE_OF */
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#endif /* _ASM_BOOTINFO_H */
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