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Update MIPS bootinfo.h to reflect the actual MIPS boot2/loader boot-time
interface. MFC after: 3 weeks Sponsored by: DARPA, AFRL
This commit is contained in:
Robert Watson
parent
c5d4eab644
commit
a02a14d1a6
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=262217
@ -1,4 +1,5 @@
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/*-
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* Copyright (c) 2013 Robert N. M. Watson
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* Copyright (C) 1994 by Rodney W. Grimes, Milwaukie, Oregon 97222
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* All rights reserved.
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*
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@ -36,33 +37,15 @@
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#define _MACHINE_BOOTINFO_H_
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/* Only change the version number if you break compatibility. */
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#define BOOTINFO_VERSION 1
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#define N_BIOS_GEOM 8
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#define BOOTINFO_VERSION 2
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#define MIPS_BOOTINFO_MAGIC 0xCDEACDEA
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/* Extended OLV bootinfo struct. The data area includes a list of named
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OIDs and associated data values. The format is:
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NUL-terminated dotted-string name
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2 byte length, in big-endian order
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LENGTH bytes of data
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[...]
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The two magic fields are used to guard against other bootloaders that
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may place other sorts of data here. */
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struct bootinfo_ext {
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#define BOOTINFO_EXT_MAGIC1 0x55aa00ff
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unsigned int magic1;
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unsigned char *data;
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unsigned int size;
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#define BOOTINFO_EXT_MAGIC2 0x32719187
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unsigned int magic2;
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};
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#define BOOTINFO_EXT_MAX_SIZE 16384
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#if defined(__mips_n32) || defined(__mips_n64)
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typedef uint64_t bi_ptr_t;
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#else
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typedef uint32_t bi_ptr_t;
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#endif
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/*
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* A zero bootinfo field often means that there is no info available.
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@ -70,73 +53,33 @@ struct bootinfo_ext {
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* normal value.
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*/
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struct bootinfo {
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u_int32_t bi_version;
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u_int32_t bi_kernelname; /* represents a char * */
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u_int32_t bi_nfs_diskless; /* struct nfs_diskless * */
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/* End of fields that are always present. */
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#define bi_endcommon bi_n_bios_used
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u_int32_t bi_n_bios_used;
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u_int32_t bi_bios_geom[N_BIOS_GEOM];
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u_int32_t bi_size;
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u_int8_t bi_memsizes_valid;
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u_int8_t bi_bios_dev; /* bootdev BIOS unit number */
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u_int8_t bi_pad[2];
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u_int32_t bi_basemem;
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u_int32_t bi_extmem;
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u_int32_t bi_symtab; /* struct symtab * */
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u_int32_t bi_esymtab; /* struct symtab * */
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/* Items below only from advanced bootloader */
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u_int32_t bi_kernend; /* end of kernel space */
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u_int32_t bi_envp; /* environment */
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u_int32_t bi_modulep; /* preloaded modules */
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/* bootinfo meta-data. */
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uint32_t bi_version;
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uint32_t bi_size;
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/* bootinfo contents. */
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uint64_t bi_boot2opts; /* boot2 flags to loader. */
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bi_ptr_t bi_kernelname; /* Pointer to name. */
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bi_ptr_t bi_nfs_diskless;/* Pointer to NFS data. */
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bi_ptr_t bi_dtb; /* Pointer to dtb. */
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bi_ptr_t bi_memsize; /* Physical memory size in bytes. */
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bi_ptr_t bi_modulep; /* Preloaded modules. */
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bi_ptr_t bi_boot_dev_type; /* Boot-device type. */
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bi_ptr_t bi_boot_dev_unitptr; /* Boot-device unit/pointer. */
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};
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/*
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* Possible boot-device types passed from boot2 to loader, loader to kernel.
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* In most cases, the object pointed to will hold a filesystem; one exception
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* is BOOTINFO_DEV_TYPE_DRAM, which points to a pre-loaded object (e.g.,
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* loader, kernel).
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*/
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#define BOOTINFO_DEV_TYPE_DRAM 0 /* DRAM loader/kernel (ptr). */
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#define BOOTINFO_DEV_TYPE_CFI 1 /* CFI flash (unit). */
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#define BOOTINFO_DEV_TYPE_SDCARD 2 /* SD card (unit). */
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#ifdef _KERNEL
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extern struct bootinfo bootinfo;
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#endif
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/*
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* Constants for converting boot-style device number to type,
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* adaptor (uba, mba, etc), unit number and partition number.
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* Type (== major device number) is in the low byte
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* for backward compatibility. Except for that of the "magic
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* number", each mask applies to the shifted value.
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* Format:
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* (4) (4) (4) (4) (8) (8)
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* --------------------------------
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* |MA | AD| CT| UN| PART | TYPE |
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* --------------------------------
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*/
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#define B_ADAPTORSHIFT 24
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#define B_ADAPTORMASK 0x0f
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#define B_ADAPTOR(val) (((val) >> B_ADAPTORSHIFT) & B_ADAPTORMASK)
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#define B_CONTROLLERSHIFT 20
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#define B_CONTROLLERMASK 0xf
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#define B_CONTROLLER(val) (((val)>>B_CONTROLLERSHIFT) & B_CONTROLLERMASK)
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#define B_SLICESHIFT 20
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#define B_SLICEMASK 0xff
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#define B_SLICE(val) (((val)>>B_SLICESHIFT) & B_SLICEMASK)
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#define B_UNITSHIFT 16
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#define B_UNITMASK 0xf
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#define B_UNIT(val) (((val) >> B_UNITSHIFT) & B_UNITMASK)
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#define B_PARTITIONSHIFT 8
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#define B_PARTITIONMASK 0xff
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#define B_PARTITION(val) (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
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#define B_TYPESHIFT 0
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#define B_TYPEMASK 0xff
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#define B_TYPE(val) (((val) >> B_TYPESHIFT) & B_TYPEMASK)
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#define B_MAGICMASK 0xf0000000
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#define B_DEVMAGIC 0xa0000000
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#define MAKEBOOTDEV(type, adaptor, controller, unit, partition) \
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(((type) << B_TYPESHIFT) | ((adaptor) << B_ADAPTORSHIFT) | \
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((controller) << B_CONTROLLERSHIFT) | ((unit) << B_UNITSHIFT) | \
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((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC)
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#define BASE_SLICE 2
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#define COMPATIBILITY_SLICE 0
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#define MAX_SLICES 32
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#define WHOLE_DISK_SLICE 1
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#endif /* !_MACHINE_BOOTINFO_H_ */
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