grub/kern/i386/pc/init.c
okuji a5ffe96617 2003-01-06 Yoshinori K. Okuji <okuji@enbug.org>
* util/i386/pc/pupa-setup.c: Include pupa/machine/kernel.h.
	(setup): Configure the installed partition information and the
	dl prefix.

	* loader/i386/pc/chainloader.c (my_mod): New variable.
	(pupa_chainloader_unload): New function.
	(pupa_rescue_cmd_chainloader): Refer itself.
	(PUPA_MOD_INIT): Save its own module in MY_MOD.

	* kern/i386/pc/startup.S (install_partition): Removed.
	(version_string): Likewise.
	(config_file): Likewise.
	(pupa_install_dos_part): New variable.
	(pupa_install_bsd_part): Likewise.
	(pupa_prefix): Likewise.
	(pupa_chainloader_real_boot): Call pupa_dl_unload_all.

	* kern/i386/pc/init.c: Include pupa/machine/kernel.h, pupa/dl.h
	and pupa/misc.h.
	(make_install_device): New function.
	(pupa_machine_init): Set the dl prefix.

	* kern/rescue.c: Include pupa/rescue.h and pupa/dl.h.
	(buf): Renamed to ...
	(linebuf): ... this.
	(pupa_rescue_cmd_prefix): New function.
	(pupa_rescue_cmd_insmod): Likewise.
	(pupa_rescue_cmd_rmmod): Likewise.
	(pupa_rescue_cmd_lsmod): Likewise.
	(pupa_enter_rescue_mode): Register new commands: prefix, insmod,
	rmmod and lsmod.

	* kern/mm.c (pupa_memalign): If failed even after invalidating
	disk caches, unload unneeded modules and retry.

	* kern/misc.c (pupa_memmove): New function.
	(pupa_memcpy): Removed.
	(pupa_strcpy): New function.
	(pupa_itoa): Made static.

	* kern/dl.c (pupa_dl_iterate): New function.
	(pupa_dl_ref): Likewise.
	(pupa_dl_unref): Likewise.
	(pupa_dl_unload): Return if succeeded or not.
	(pupa_dl_unload_unneeded): New function.
	(pupa_dl_unload_all): Likewise.
	(pupa_dl_init): Renamed to ...
	(pupa_dl_set_prefix): ... this.
	(pupa_dl_get_prefix): New function.

	* include/pupa/i386/pc/kernel.h: Include pupa/types.h.
	(PUPA_KERNEL_MACHINE_INSTALL_DOS_PART): New macro.
	(PUPA_KERNEL_MACHINE_INSTALL_BSD_PART): Likewise.
	(PUPA_KERNEL_MACHINE_PREFIX): Likewise.
	(pupa_install_dos_part): Declared.
	(pupa_install_bsd_part): Likewise.
	(pupa_prefix): Likewise.
	(pupa_boot_drive): Likewise.

	* include/pupa/types.h: Fix a typo.

	* include/pupa/misc.h (pupa_memcpy): New macro. Just an alias to
	pupa_memmove.
	(pupa_memmove): Declared.
	(pupa_strcpy): Likewise.

	* include/pupa/dl.h (PUPA_MOD_INIT): Change the prototype. Now
	pupa_mod_init takes one argument, its own module.
	(pupa_dl_unload_unneeded): Declared.
	(pupa_dl_unload_all): Likewise.
	(pupa_dl_ref): Likewise.
	(pupa_dl_unref): Likewise.
	(pupa_dl_iterate): Likewise.
	(pupa_dl_init): Renamed to ...
	(pupa_dl_set_prefix): ... this.
	(pupa_dl_get_prefix): Declared.

	* fs/fat.c [!PUPA_UTIL] (my_mod): New variable.
	(pupa_fat_dir) [!PUPA_UTIL]: Prevent the fat module from being
	unloaded.
	(pupa_fat_open) [!PUPA_UTIL]: Refer itself if succeeded.
	(pupa_fat_close) [!PUPA_UTIL]: Unrefer itself.

	* configure.ac (tmp_CFLAGS): Added -Wshadow, -Wpointer-arith,
	-Wmissing-prototypes, -Wundef and -Wstrict-prototypes.
2003-01-06 00:01:35 +00:00

143 lines
3.9 KiB
C

/*
* PUPA -- Preliminary Universal Programming Architecture for GRUB
* Copyright (C) 2002 Yoshinori K. Okuji <okuji@enbug.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <pupa/kernel.h>
#include <pupa/mm.h>
#include <pupa/machine/init.h>
#include <pupa/machine/memory.h>
#include <pupa/machine/console.h>
#include <pupa/machine/biosdisk.h>
#include <pupa/machine/kernel.h>
#include <pupa/types.h>
#include <pupa/err.h>
#include <pupa/dl.h>
#include <pupa/misc.h>
static char *
make_install_device (void)
{
/* XXX: This should be enough. */
char dev[100];
pupa_sprintf (dev, "(%cd%u",
(pupa_boot_drive & 0x80) ? 'h' : 'f',
pupa_boot_drive & 0x7f);
if (pupa_install_dos_part >= 0)
pupa_sprintf (dev + pupa_strlen (dev), ",%u", pupa_install_dos_part);
if (pupa_install_bsd_part >= 0)
pupa_sprintf (dev + pupa_strlen (dev), ",%c", pupa_install_bsd_part + 'a');
pupa_sprintf (dev + pupa_strlen (dev), ")%s", pupa_prefix);
pupa_strcpy (pupa_prefix, dev);
return pupa_prefix;
}
void
pupa_machine_init (void)
{
pupa_uint32_t cont;
struct pupa_machine_mmap_entry *entry
= (struct pupa_machine_mmap_entry *) PUPA_MEMORY_MACHINE_SCRATCH_ADDR;
pupa_size_t lower_mem = (pupa_get_memsize (0) << 10);
pupa_addr_t end_addr = pupa_get_end_addr ();
/* Initialize the console as early as possible. */
pupa_console_init ();
/* Sanity check. */
if (lower_mem < PUPA_MEMORY_MACHINE_RESERVED_END)
pupa_fatal ("too small memory");
/* Turn on Gate A20 to access >1MB. */
pupa_gate_a20 (1);
/* Add the lower memory into free memory. */
if (lower_mem >= PUPA_MEMORY_MACHINE_RESERVED_END)
pupa_mm_init_region ((void *) PUPA_MEMORY_MACHINE_RESERVED_END,
lower_mem - PUPA_MEMORY_MACHINE_RESERVED_END);
pupa_mm_init_region ((void *) end_addr,
PUPA_MEMORY_MACHINE_RESERVED_START - end_addr);
/* Check if pupa_get_mmap_entry works. */
cont = pupa_get_mmap_entry (entry, 0);
if (entry->size)
do
{
/* Avoid the lower memory. */
if (entry->addr < 0x100000)
{
if (entry->len <= 0x100000 - entry->addr)
goto next;
entry->len -= 0x100000 - entry->addr;
entry->addr = 0x100000;
}
/* Ignore >4GB. */
if (entry->addr <= 0xFFFFFFFF && entry->type == 1)
{
pupa_addr_t addr;
pupa_size_t len;
addr = (pupa_addr_t) entry->addr;
len = ((addr + entry->len > 0xFFFFFFFF)
? 0xFFFFFFFF - addr
: (pupa_size_t) entry->len);
pupa_mm_init_region ((void *) addr, len);
}
next:
if (! cont)
break;
cont = pupa_get_mmap_entry (entry, cont);
}
while (entry->size);
else
{
pupa_uint32_t eisa_mmap = pupa_get_eisa_mmap ();
if (eisa_mmap)
{
if ((eisa_mmap & 0xFFFF) == 0x3C00)
pupa_mm_init_region ((void *) 0x100000,
(eisa_mmap << 16) + 0x100000 * 15);
else
{
pupa_mm_init_region ((void *) 0x100000,
(eisa_mmap & 0xFFFF) << 10);
pupa_mm_init_region ((void *) 0x1000000, eisa_mmap << 16);
}
}
else
pupa_mm_init_region ((void *) 0x100000,
(pupa_size_t) pupa_get_memsize (1) << 10);
}
/* The memory system was initialized, thus register built-in devices. */
pupa_biosdisk_init ();
/* Initialize the prefix. */
pupa_dl_set_prefix (make_install_device ());
}