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l4ka-pistachio/kernel/kdb/generic/bootinfo.cc

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/*********************************************************************
*
* Copyright (C) 2004, 2010, Karlsruhe University
*
* File path: kdb/generic/bootinfo.cc
* Description: Generic bootinfo dumping
*
* 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 AUTHOR 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 AUTHOR 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.
*
* $Id: bootinfo.cc,v 1.5 2006/10/22 19:43:31 reichelt Exp $
*
********************************************************************/
#include <debug.h>
#include <kdb/cmd.h>
#include <kdb/kdb.h>
#include INC_API(kernelinterface.h)
#include INC_API(tcb.h)
#define L4_BOOTINFO_MAGIC ((word_t) 0x14b0021d)
#define L4_BOOTINFO_VERSION 1
/**
* Generic bootinfo record.
*/
class bootrec_t
{
word_t _type;
word_t _version;
word_t _offset_next;
public:
enum type_e {
module = 0x0001,
simple_exec = 0x0002,
efitables = 0x0101,
multiboot = 0x0102,
};
type_e type (void)
{ return (type_e) _type; }
word_t version (void)
{ return _version; }
bootrec_t * next (void)
{ return (bootrec_t *) ((word_t) this + _offset_next); }
};
/**
* Bootinfo record for simple binary file.
*/
class boot_module_t
{
public:
word_t type; // 0x01
word_t version; // 1
word_t offset_next;
word_t start;
word_t size;
word_t cmdline_offset;
const char * commandline (void)
{ return cmdline_offset ? (const char *) this + cmdline_offset : ""; }
};
/**
* Bootinfo record for simple executable image loaded and relocated by
* the bootloader.
*/
class boot_simpleexec_t
{
public:
word_t type; // 0x02
word_t version; // 1
word_t offset_next;
word_t text_pstart;
word_t text_vstart;
word_t text_size;
word_t data_pstart;
word_t data_vstart;
word_t data_size;
word_t bss_pstart;
word_t bss_vstart;
word_t bss_size;
word_t initial_ip;
word_t flags;
word_t label;
word_t cmdline_offset;
const char * commandline (void)
{ return cmdline_offset ? (const char *) this + cmdline_offset : ""; }
};
/**
* Bootinfo record for EFI table information.
*/
class boot_efi_t
{
public:
word_t type; // 0x101
word_t version; // 1
word_t offset_next;
word_t systab;
word_t memmap;
word_t memmap_size;
word_t memdesc_size;
word_t memdesc_version;
};
/**
* Bootinfo record for multiboot info.
*/
class boot_mbi_t
{
public:
word_t type; // 0x102
word_t version; // 1
word_t offset_next;
word_t address;
};
/**
* Main structure for generic bootinfo.
*/
class bootinfo_t
{
word_t _magic;
word_t _version;
word_t _size;
word_t _first_entry;
word_t _num_entries;
word_t __reserved[3];
word_t safe_get (word_t * fld)
{ return kdb.kdb_current->get_space ()->readmem_phys ((paddr_t)fld); }
public:
bool is_valid (void)
{ return safe_get (&_magic) == L4_BOOTINFO_MAGIC; }
word_t size_safe (void) { return safe_get (&_size); }
word_t magic (void) { return _magic; }
word_t version (void) { return _version; }
word_t size (void) { return _size; }
word_t entries (void) { return _num_entries; }
bootrec_t * first_entry (void)
{ return (bootrec_t *) ((word_t) this + _first_entry); }
};
/**
* Copy of bootinfo structure. Used in order to simplify parsing (no
* need to access some random physical memory location).
*/
bootinfo_t * bootinfo_copy;
/**
* Dump generic bootinfo structure
*/
DECLARE_CMD (cmd_dump_bootinfo, root, 'B', "bootinfo",
"generic bootinfo");
CMD (cmd_dump_bootinfo, cg)
{
static word_t kip_bootinfo;
bootinfo_t * bi = bootinfo_copy;
if (bi == NULL)
{
kip_bootinfo = get_kip ()->boot_info;
bi = (bootinfo_t *) kip_bootinfo;
/*
* Do some sanity checking to see if this really is a valid
* generic BootInfo structure.
*/
if (bi == NULL || (word_t) bi > (word_t) GB (2))
{
printf ("Doesn't look like a generic bootinfo structure "
"(bootinfo=%p)\n", bi);
return CMD_NOQUIT;
}
if (! bi->is_valid ())
{
printf ("Not a generic bootinfo record (bootinfo=%p).\n", bi);
return CMD_NOQUIT;
}
/*
* OK. Looks fine. Make a local copy of the bootinfo
* structure (easier to parse).
*/
word_t size = (bi->size_safe () + sizeof (word_t) - 1) &
~(sizeof (word_t) - 1);
word_t alloc_size = (1 << 12);
while (alloc_size < size)
alloc_size <<= 1;
EXTERN_KMEM_GROUP (kmem_misc);
bootinfo_copy = (bootinfo_t *)
kmem.alloc (kmem_misc, (1UL << alloc_size));
space_t * s = kdb.kdb_current->get_space ();
word_t * src = (word_t *) bi;
word_t * dst = (word_t *) bootinfo_copy;
for (;size > 0; size -= sizeof (word_t), src++, dst++)
*dst = s->readmem_phys ((paddr_t) src);
bi = bootinfo_copy;
}
/*
* We are here operating on a local copy of the bootinfo.
*/
printf ("Generic BootInfo @ %p\n", kip_bootinfo);
printf (" magic: 0x%p\n"
" version: %d\n"
" size: 0x%x\n"
" num records: %d\n\n",
bi->magic (), bi->version (), bi->size (), bi->entries ());
word_t numrec = bi->entries ();
bootrec_t * rec = bi->first_entry ();
for (word_t n = 1; numrec-- > 0; n++, rec = rec->next ())
{
switch (rec->type ())
{
case bootrec_t::module:
{
boot_module_t * b = (boot_module_t *) rec;
printf ("[%d] Simple module (version %d):\n"
" start: %p\n"
" size: %p\n"
" cmdline: %s\n\n",
n, b->version, b->start, b->size,
b->commandline ());
break;
}
case bootrec_t::simple_exec:
{
boot_simpleexec_t * e = (boot_simpleexec_t *) rec;
printf ("[%d] Simple executable (version %d):\n"
" text: [paddr: %p, vaddr: %p, size: %p]\n"
" data: [paddr: %p, vaddr: %p, size: %p]\n"
" bss: [paddr: %p, vaddr: %p, size: %p]\n"
" entry: %p\n"
" flags: %p\n"
" label: %p\n"
" cmdline: %s\n\n",
n, e->version,
e->text_pstart, e->text_vstart, e->text_size,
e->data_pstart, e->data_vstart, e->data_size,
e->bss_pstart, e->bss_vstart, e->bss_size,
e->initial_ip, e->flags, e->label, e->commandline ());
break;
}
case bootrec_t::efitables:
{
boot_efi_t * e = (boot_efi_t *) rec;
printf ("[%d] EFI Tables (version %d):\n"
" systab: %p\n"
" memmap: [addr: %p, size: 0x%x]\n"
" memdesc: [version: 0x%x, size: 0x%x]\n",
n, e->version, e->systab, e->memmap, e->memmap_size,
e->memdesc_version, e->memdesc_size);
break;
}
case bootrec_t::multiboot:
{
boot_mbi_t * m = (boot_mbi_t *) rec;
printf ("[%d] Multiboot info (version %d):\n"
" address: %p\n",
n, m->version, m->address);
break;
}
default:
printf ("[%d] Unknown record (type: 0x%x, version: %d)\n\n",
n, rec->type (), rec->version ());
}
}
return CMD_NOQUIT;
}
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