svn commit: r262217 - head/sys/mips/include
Robert Watson
rwatson at FreeBSD.org
Wed Feb 19 09:19:10 UTC 2014
Author: rwatson
Date: Wed Feb 19 09:19:09 2014
New Revision: 262217
URL: http://svnweb.freebsd.org/changeset/base/262217
Log:
Update MIPS bootinfo.h to reflect the actual MIPS boot2/loader boot-time
interface.
MFC after: 3 weeks
Sponsored by: DARPA, AFRL
Modified:
head/sys/mips/include/bootinfo.h
Modified: head/sys/mips/include/bootinfo.h
==============================================================================
--- head/sys/mips/include/bootinfo.h Wed Feb 19 09:13:55 2014 (r262216)
+++ head/sys/mips/include/bootinfo.h Wed Feb 19 09:19:09 2014 (r262217)
@@ -1,4 +1,5 @@
/*-
+ * Copyright (c) 2013 Robert N. M. Watson
* Copyright (C) 1994 by Rodney W. Grimes, Milwaukie, Oregon 97222
* All rights reserved.
*
@@ -36,33 +37,15 @@
#define _MACHINE_BOOTINFO_H_
/* Only change the version number if you break compatibility. */
-#define BOOTINFO_VERSION 1
-
-#define N_BIOS_GEOM 8
+#define BOOTINFO_VERSION 2
#define MIPS_BOOTINFO_MAGIC 0xCDEACDEA
-/* Extended OLV bootinfo struct. The data area includes a list of named
- OIDs and associated data values. The format is:
-
- NUL-terminated dotted-string name
- 2 byte length, in big-endian order
- LENGTH bytes of data
- [...]
-
- The two magic fields are used to guard against other bootloaders that
- may place other sorts of data here. */
-
-struct bootinfo_ext {
-#define BOOTINFO_EXT_MAGIC1 0x55aa00ff
- unsigned int magic1;
- unsigned char *data;
- unsigned int size;
-#define BOOTINFO_EXT_MAGIC2 0x32719187
- unsigned int magic2;
-};
-
-#define BOOTINFO_EXT_MAX_SIZE 16384
+#if defined(__mips_n32) || defined(__mips_n64)
+typedef uint64_t bi_ptr_t;
+#else
+typedef uint32_t bi_ptr_t;
+#endif
/*
* A zero bootinfo field often means that there is no info available.
@@ -70,73 +53,33 @@ struct bootinfo_ext {
* normal value.
*/
struct bootinfo {
- u_int32_t bi_version;
- u_int32_t bi_kernelname; /* represents a char * */
- u_int32_t bi_nfs_diskless; /* struct nfs_diskless * */
- /* End of fields that are always present. */
-#define bi_endcommon bi_n_bios_used
- u_int32_t bi_n_bios_used;
- u_int32_t bi_bios_geom[N_BIOS_GEOM];
- u_int32_t bi_size;
- u_int8_t bi_memsizes_valid;
- u_int8_t bi_bios_dev; /* bootdev BIOS unit number */
- u_int8_t bi_pad[2];
- u_int32_t bi_basemem;
- u_int32_t bi_extmem;
- u_int32_t bi_symtab; /* struct symtab * */
- u_int32_t bi_esymtab; /* struct symtab * */
- /* Items below only from advanced bootloader */
- u_int32_t bi_kernend; /* end of kernel space */
- u_int32_t bi_envp; /* environment */
- u_int32_t bi_modulep; /* preloaded modules */
+ /* bootinfo meta-data. */
+ uint32_t bi_version;
+ uint32_t bi_size;
+
+ /* bootinfo contents. */
+ uint64_t bi_boot2opts; /* boot2 flags to loader. */
+ bi_ptr_t bi_kernelname; /* Pointer to name. */
+ bi_ptr_t bi_nfs_diskless;/* Pointer to NFS data. */
+ bi_ptr_t bi_dtb; /* Pointer to dtb. */
+ bi_ptr_t bi_memsize; /* Physical memory size in bytes. */
+ bi_ptr_t bi_modulep; /* Preloaded modules. */
+ bi_ptr_t bi_boot_dev_type; /* Boot-device type. */
+ bi_ptr_t bi_boot_dev_unitptr; /* Boot-device unit/pointer. */
};
+/*
+ * Possible boot-device types passed from boot2 to loader, loader to kernel.
+ * In most cases, the object pointed to will hold a filesystem; one exception
+ * is BOOTINFO_DEV_TYPE_DRAM, which points to a pre-loaded object (e.g.,
+ * loader, kernel).
+ */
+#define BOOTINFO_DEV_TYPE_DRAM 0 /* DRAM loader/kernel (ptr). */
+#define BOOTINFO_DEV_TYPE_CFI 1 /* CFI flash (unit). */
+#define BOOTINFO_DEV_TYPE_SDCARD 2 /* SD card (unit). */
+
#ifdef _KERNEL
extern struct bootinfo bootinfo;
#endif
-/*
- * Constants for converting boot-style device number to type,
- * adaptor (uba, mba, etc), unit number and partition number.
- * Type (== major device number) is in the low byte
- * for backward compatibility. Except for that of the "magic
- * number", each mask applies to the shifted value.
- * Format:
- * (4) (4) (4) (4) (8) (8)
- * --------------------------------
- * |MA | AD| CT| UN| PART | TYPE |
- * --------------------------------
- */
-#define B_ADAPTORSHIFT 24
-#define B_ADAPTORMASK 0x0f
-#define B_ADAPTOR(val) (((val) >> B_ADAPTORSHIFT) & B_ADAPTORMASK)
-#define B_CONTROLLERSHIFT 20
-#define B_CONTROLLERMASK 0xf
-#define B_CONTROLLER(val) (((val)>>B_CONTROLLERSHIFT) & B_CONTROLLERMASK)
-#define B_SLICESHIFT 20
-#define B_SLICEMASK 0xff
-#define B_SLICE(val) (((val)>>B_SLICESHIFT) & B_SLICEMASK)
-#define B_UNITSHIFT 16
-#define B_UNITMASK 0xf
-#define B_UNIT(val) (((val) >> B_UNITSHIFT) & B_UNITMASK)
-#define B_PARTITIONSHIFT 8
-#define B_PARTITIONMASK 0xff
-#define B_PARTITION(val) (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
-#define B_TYPESHIFT 0
-#define B_TYPEMASK 0xff
-#define B_TYPE(val) (((val) >> B_TYPESHIFT) & B_TYPEMASK)
-
-#define B_MAGICMASK 0xf0000000
-#define B_DEVMAGIC 0xa0000000
-
-#define MAKEBOOTDEV(type, adaptor, controller, unit, partition) \
- (((type) << B_TYPESHIFT) | ((adaptor) << B_ADAPTORSHIFT) | \
- ((controller) << B_CONTROLLERSHIFT) | ((unit) << B_UNITSHIFT) | \
- ((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC)
-
-#define BASE_SLICE 2
-#define COMPATIBILITY_SLICE 0
-#define MAX_SLICES 32
-#define WHOLE_DISK_SLICE 1
-
#endif /* !_MACHINE_BOOTINFO_H_ */
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