/* $NetBSD: linux_bootinfo.h,v 1.6 2026/07/12 22:21:59 thorpej Exp $ */ /*- * Copyright (c) 2023 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef _M68K_LINUX_BOOTINFO_H_ #define _M68K_LINUX_BOOTINFO_H_ #include <m68k/seglist.h> /* * Linux/m68k boot information structures. These records are used to * pass information from the Linux boot loader (or Qemu) to the loaded * kernel. * * Each record has a header with the type tag and record size, followed * by a data field. Each record + data is padded to align the record * header at a 4-byte boundary. */ struct bi_record { uint16_t bi_tag; /* record type */ uint16_t bi_size; /* record size (including header) */ uint8_t bi_data[]; }; /* * Record types. Record types >= 0x8000 are machine-dependent. */ #define BI_MACHDEP(x) ((x) + 0x8000) #define BI_LAST 0 /* list terminator */ #define BI_MACHTYPE 1 /* machine type (uint32_t) */ #define BI_CPUTYPE 2 /* CPU type (uint32_t) */ #define BI_FPUTYPE 3 /* FPU type (uint32_t) */ #define BI_MMUTYPE 4 /* MMU type (uint32_t) */ #define BI_MEMCHUNK 5 /* memory segment (bi_mem_info) */ #define BI_RAMDISK 6 /* RAM disk (bi_mem_info) */ #define BI_COMMAND_LINE 7 /* kernel command line parameters (C string) */ #define BI_RNG_SEED 8 /* random number generator seed (bi_data) */ #define BI_VIRT_QEMU_VERSION BI_MACHDEP(0) /* uint32_t */ #define BI_VIRT_GF_PIC_BASE BI_MACHDEP(1) /* bi_virt_dev */ #define BI_VIRT_GF_RTC_BASE BI_MACHDEP(2) #define BI_VIRT_GF_TTY_BASE BI_MACHDEP(3) #define BI_VIRT_VIRTIO_BASE BI_MACHDEP(4) #define BI_VIRT_CTRL_BASE BI_MACHDEP(5) /* * FDT bootinfo record types. * * BI_FDT_PLATFORM (C string) * This is a copy of the first string in the "compatible" property from * the root node of the device tree. This is intended to enable early * bootstrap code to make platform-specific decisions before the FDT * can be parsed. * * BI_FDT_BLOB bi_data * Flattened Device Tree describing the system. * * BI_FDT_ELF_SYMS bi_mem_info * Symbol table for the loaded program. Symbol table is in the format * of a standard ELF image. The loaded program may assume that the * symbols are contiguous with the program image and trailing bootinfo * data. */ #define BI_FDT_PLATFORM BI_MACHDEP(0) /* (C string) */ #define BI_FDT_BLOB BI_MACHDEP(1) /* bi_data */ #define BI_FDT_ELF_SYMS BI_MACHDEP(2) /* bi_mem_info */ struct bi_mem_info { uint32_t mem_addr; /* PA of memory segment */ uint32_t mem_size; /* size in bytes */ }; struct bi_data { uint16_t data_length; /* length of data */ uint8_t data_bytes[]; }; struct bi_virt_dev { uint32_t vd_mmio_base; uint32_t vd_irq_base; }; /* * Values for BI_MACHTYPE. */ #define BI_MACH_AMIGA 1 #define BI_MACH_ATARI 2 #define BI_MACH_MAC 3 #define BI_MACH_APOLLO 4 #define BI_MACH_SUN3 5 #define BI_MACH_MVME147 6 #define BI_MACH_MVME16x 7 #define BI_MACH_BVME6000 8 #define BI_MACH_HP300 9 #define BI_MACH_Q40 10 #define BI_MACH_SUN3X 11 #define BI_MACH_M54XX 12 #define BI_MACH_M5441X 13 #define BI_MACH_VIRT 14 /* * These are "non-standard" (i.e. not defined in Linux) MACHTYPE values, * but are known to exist in the wild. */ #define BI_MACH_FDT 0x46445400 /* 'FDT\0' */ /* * Values for BI_CPUTYPE. */ #define BI_CPU_68020 __BIT(0) #define BI_CPU_68030 __BIT(1) #define BI_CPU_68040 __BIT(2) #define BI_CPU_68060 __BIT(3) #define BI_CPU_COLDFIRE __BIT(4) /* * Values for BI_FPUTYPE. */ #define BI_FPU_68881 __BIT(0) #define BI_FPU_68882 __BIT(1) #define BI_FPU_68040 __BIT(2) #define BI_FPU_68060 __BIT(3) #define BI_FPU_SUNFPA __BIT(4) #define BI_FPU_COLDFIRE __BIT(5) /* * Values for BI_MMUTYPE. */ #define BI_MMU_68851 __BIT(0) #define BI_MMU_68030 __BIT(1) #define BI_MMU_68040 __BIT(2) #define BI_MMU_68060 __BIT(3) #define BI_MMU_APOLLO __BIT(4) #define BI_MMU_SUN3 __BIT(5) #define BI_MMU_COLDFIRE __BIT(6) #ifdef _KERNEL #include <sys/bus.h> struct bootinfo_data { struct bi_record * bootinfo; vaddr_t bootinfo_end; uint32_t bootinfo_machtype; int bootinfo_mem_segments_ignored; size_t bootinfo_mem_segments_ignored_bytes; phys_seg_list_t * bootinfo_mem_segments; int bootinfo_mem_nsegments; int bootinfo_total_mem_pages; uint32_t bootinfo_initrd_start; uint32_t bootinfo_initrd_size; vaddr_t bootinfo_ksym_start; vaddr_t bootinfo_ksym_size; }; #define bootinfo_dataptr(bi) ((void *)&(bi)->bi_data[0]) #define bootinfo_get_u32(bi) (*(uint32_t *)bootinfo_dataptr(bi)) paddr_t bootinfo_startup1(paddr_t, vaddr_t); void bootinfo_startup2(paddr_t); struct bootinfo_data * bootinfo_data(void); struct bi_record * bootinfo_find(uint32_t); struct bi_record * bootinfo_find_machdep(uint32_t, uint32_t); void bootinfo_enumerate(bool (*)(struct bi_record *, void *), void *); void bootinfo_setup_initrd(void); void bootinfo_setup_rndseed(void); bool bootinfo_getarg(const char *, char *, size_t); #endif /* _KERNEL */ #endif /* _M68K_LINUX_BOOTINFO_H_ */
