Use linux.c on i386-ieee1275

This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-01-13 17:27:45 +01:00
parent 8071fb7997
commit 9efe142861
2 changed files with 1 additions and 312 deletions

View file

@ -97,7 +97,7 @@ serial_mod_CFLAGS = $(COMMON_CFLAGS)
serial_mod_LDFLAGS = $(COMMON_LDFLAGS) serial_mod_LDFLAGS = $(COMMON_LDFLAGS)
# For linux.mod. # For linux.mod.
linux_mod_SOURCES = loader/i386/ieee1275/linux.c linux_mod_SOURCES = loader/i386/linux.c
linux_mod_CFLAGS = $(COMMON_CFLAGS) linux_mod_CFLAGS = $(COMMON_CFLAGS)
linux_mod_LDFLAGS = $(COMMON_LDFLAGS) linux_mod_LDFLAGS = $(COMMON_LDFLAGS)

View file

@ -1,311 +0,0 @@
/* linux.c - boot Linux zImage or bzImage */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2007,2008,2009,2010 Free Software Foundation, Inc.
*
* GRUB 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 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/loader.h>
#include <grub/machine/loader.h>
#include <grub/machine/memory.h>
#include <grub/file.h>
#include <grub/err.h>
#include <grub/disk.h>
#include <grub/misc.h>
#include <grub/types.h>
#include <grub/mm.h>
#include <grub/dl.h>
#include <grub/env.h>
#include <grub/term.h>
#include <grub/cpu/linux.h>
#include <grub/ieee1275/ieee1275.h>
#include <grub/command.h>
#include <grub/i18n.h>
#define GRUB_OFW_LINUX_PARAMS_ADDR 0x90000
#define GRUB_OFW_LINUX_KERNEL_ADDR 0x100000
#define GRUB_OFW_LINUX_INITRD_ADDR 0x800000
#define GRUB_OFW_LINUX_CL_OFFSET 0x1e00
#define GRUB_OFW_LINUX_CL_LENGTH 0x100
static grub_dl_t my_mod;
static grub_size_t kernel_size;
static char *kernel_addr, *kernel_cmdline;
static grub_size_t initrd_size;
static grub_err_t
grub_linux_unload (void)
{
grub_free (kernel_cmdline);
grub_free (kernel_addr);
kernel_cmdline = 0;
kernel_addr = 0;
initrd_size = 0;
grub_dl_unref (my_mod);
return GRUB_ERR_NONE;
}
/*
static int
grub_ieee1275_debug (void)
{
struct enter_args
{
struct grub_ieee1275_common_hdr common;
}
args;
INIT_IEEE1275_COMMON (&args.common, "enter", 0, 0);
if (IEEE1275_CALL_ENTRY_FN (&args) == -1)
return -1;
return 0;
}
*/
static grub_err_t
grub_linux_boot (void)
{
struct linux_kernel_params *params;
struct linux_kernel_header *lh;
char *prot_code;
char *bootpath;
grub_ssize_t len;
bootpath = grub_env_get ("root");
if (bootpath)
grub_ieee1275_set_property (grub_ieee1275_chosen,
"bootpath", bootpath,
grub_strlen (bootpath) + 1,
&len);
params = (struct linux_kernel_params *) GRUB_OFW_LINUX_PARAMS_ADDR;
lh = (struct linux_kernel_header *) params;
grub_memset ((char *) params, 0, GRUB_OFW_LINUX_CL_OFFSET);
params->alt_mem = grub_mmap_get_upper () >> 10;
params->ext_mem = params->alt_mem;
lh->cmd_line_ptr = (char *)
(GRUB_OFW_LINUX_PARAMS_ADDR + GRUB_OFW_LINUX_CL_OFFSET);
params->cl_magic = GRUB_LINUX_CL_MAGIC;
params->cl_offset = GRUB_OFW_LINUX_CL_OFFSET;
{
grub_term_output_t term;
int found = 0;
FOR_ACTIVE_TERM_OUTPUTS(term)
if (grub_strcmp (term->name, "ofconsole") == 0)
{
grub_uint16_t pos = grub_term_getxy (term);
params->video_cursor_x = pos >> 8;
params->video_cursor_y = pos & 0xff;
params->video_width = grub_term_width (term);
params->video_height = grub_term_height (term);
found = 1;
break;
}
if (!found)
{
params->video_cursor_x = 0;
params->video_cursor_y = 0;
params->video_width = 80;
params->video_height = 25;
}
}
params->font_size = 16;
params->ofw_signature = GRUB_LINUX_OFW_SIGNATURE;
params->ofw_num_items = 1;
params->ofw_cif_handler = (grub_uint32_t) grub_ieee1275_entry_fn;
params->ofw_idt = 0;
if (initrd_size)
{
lh->type_of_loader = 1;
lh->ramdisk_image = GRUB_OFW_LINUX_INITRD_ADDR;
lh->ramdisk_size = initrd_size;
}
if (kernel_cmdline)
grub_strcpy (lh->cmd_line_ptr, kernel_cmdline);
prot_code = (char *) GRUB_OFW_LINUX_KERNEL_ADDR;
grub_memcpy (prot_code, kernel_addr, kernel_size);
asm volatile ("movl %0, %%esi" : : "m" (params));
asm volatile ("movl %%esi, %%esp" : : );
asm volatile ("movl %0, %%ecx" : : "m" (prot_code));
asm volatile ("xorl %%ebx, %%ebx" : : );
asm volatile ("jmp *%%ecx" : : );
return GRUB_ERR_NONE;
}
static grub_err_t
grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
int argc, char *argv[])
{
grub_file_t file = 0;
struct linux_kernel_header lh;
grub_uint8_t setup_sects;
grub_size_t real_size, prot_size;
int i;
char *dest;
grub_dl_ref (my_mod);
if (argc == 0)
{
grub_error (GRUB_ERR_BAD_ARGUMENT, "no kernel specified");
goto fail;
}
file = grub_file_open (argv[0]);
if (! file)
goto fail;
if (grub_file_read (file, &lh, sizeof (lh)) != sizeof (lh))
{
grub_error (GRUB_ERR_READ_ERROR, "cannot read the Linux header");
goto fail;
}
if ((lh.boot_flag != grub_cpu_to_le16 (0xaa55)) ||
(lh.header != grub_cpu_to_le32 (GRUB_LINUX_MAGIC_SIGNATURE)))
{
grub_error (GRUB_ERR_BAD_OS, "invalid magic number");
goto fail;
}
setup_sects = lh.setup_sects;
if (! setup_sects)
setup_sects = GRUB_LINUX_DEFAULT_SETUP_SECTS;
real_size = setup_sects << GRUB_DISK_SECTOR_BITS;
prot_size = grub_file_size (file) - real_size - GRUB_DISK_SECTOR_SIZE;
grub_printf (" [Linux-%s, setup=0x%x, size=0x%x]\n",
"bzImage", real_size, prot_size);
grub_file_seek (file, real_size + GRUB_DISK_SECTOR_SIZE);
if (grub_errno)
goto fail;
kernel_cmdline = grub_malloc (GRUB_OFW_LINUX_CL_LENGTH);
if (! kernel_cmdline)
goto fail;
dest = kernel_cmdline;
for (i = 1;
i < argc
&& dest + grub_strlen (argv[i]) + 1 < (kernel_cmdline
+ GRUB_OFW_LINUX_CL_LENGTH);
i++)
{
*dest++ = ' ';
dest = grub_stpcpy (dest, argv[i]);
}
kernel_addr = grub_malloc (prot_size);
if (! kernel_addr)
goto fail;
kernel_size = prot_size;
if (grub_file_read (file, kernel_addr, prot_size) != (int) prot_size)
grub_error (GRUB_ERR_FILE_READ_ERROR, "couldn't read file");
if (grub_errno == GRUB_ERR_NONE)
grub_loader_set (grub_linux_boot, grub_linux_unload, 1);
fail:
if (file)
grub_file_close (file);
if (grub_errno != GRUB_ERR_NONE)
{
grub_free (kernel_cmdline);
grub_free (kernel_addr);
kernel_cmdline = 0;
kernel_addr = 0;
grub_dl_unref (my_mod);
}
return grub_errno;
}
static grub_err_t
grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
int argc, char *argv[])
{
grub_file_t file = 0;
if (argc == 0)
{
grub_error (GRUB_ERR_BAD_ARGUMENT, "no module specified");
goto fail;
}
if (! kernel_addr)
{
grub_error (GRUB_ERR_BAD_ARGUMENT, "you need to load the kernel first");
goto fail;
}
file = grub_file_open (argv[0]);
if (! file)
goto fail;
initrd_size = grub_file_size (file);
if (grub_file_read (file, (void *) GRUB_OFW_LINUX_INITRD_ADDR,
initrd_size) != (int) initrd_size)
{
grub_error (GRUB_ERR_FILE_READ_ERROR, "couldn't read file");
goto fail;
}
fail:
if (file)
grub_file_close (file);
return grub_errno;
}
static grub_command_t cmd_linux, cmd_initrd;
GRUB_MOD_INIT(linux)
{
cmd_linux = grub_register_command ("linux", grub_cmd_linux,
0, N_("Load Linux."));
cmd_initrd = grub_register_command ("initrd", grub_cmd_initrd,
0, N_("Load initrd."));
my_mod = mod;
}
GRUB_MOD_FINI(linux)
{
grub_unregister_command (cmd_linux);
grub_unregister_command (cmd_initrd);
}