vbatts/grub
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

* grub-core/mmap/mmap.c (grub_cmd_cutmem): New function.

Browse source 
(GRUB_MOD_INIT): Register new command.
	(GRUB_MOD_FINI): Unregister new command.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-09-20 22:11:52 +02:00
parent 74342e312f
commit 2ea57f8844
2 changed files with 64 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
ChangeLog
View file

@ -1,3 +1,11 @@
2010-09-20 Vladimir Serbinenko <phcoder@gmail.com>
New command cutmem.
* grub-core/mmap/mmap.c (grub_cmd_cutmem): New function.
(GRUB_MOD_INIT): Register new command.
(GRUB_MOD_FINI): Unregister new command.
2010-09-20 Vladimir Serbinenko <phcoder@gmail.com>
Support some annoying BSD and Minix subpartitions.

57
grub-core/mmap/mmap.c
View file

@ -398,7 +398,57 @@ grub_cmd_badram (grub_command_t cmd __attribute__ ((unused)),
}
}
static grub_command_t cmd;
static grub_err_t
grub_cmd_cutmem (grub_command_t cmd __attribute__ ((unused)),
int argc, char **args)
{
grub_uint64_t cutmem;
char *ptr;
auto int NESTED_FUNC_ATTR hook (grub_uint64_t, grub_uint64_t,
grub_memory_type_t);
int NESTED_FUNC_ATTR hook (grub_uint64_t addr,
grub_uint64_t size,
grub_memory_type_t type __attribute__ ((unused)))
{
grub_uint64_t end = addr + size;
if (end >= cutmem)
return 0;
if (addr < cutmem)
addr = cutmem;
grub_mmap_register (addr, end - addr, GRUB_MEMORY_HOLE);
return 0;
}
if (argc != 1)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "number required");
cutmem = grub_strtoul (args[0], &ptr, 0);
if (grub_errno)
return grub_errno;
switch (*ptr)
{
case 'K':
cutmem <<= 10;
break;
case 'M':
cutmem <<= 20;
break;
case 'G':
cutmem <<= 30;
break;
case 'T':
cutmem <<= 40;
break;
}
grub_mmap_iterate (hook);
return GRUB_ERR_NONE;
}
static grub_command_t cmd, cmd_cut;
GRUB_MOD_INIT(mmap)
@ -406,10 +456,15 @@ GRUB_MOD_INIT(mmap)
cmd = grub_register_command ("badram", grub_cmd_badram,
N_("ADDR1,MASK1[,ADDR2,MASK2[,...]]"),
N_("Declare memory regions as badram."));
cmd_cut = grub_register_command ("cutmem", grub_cmd_cutmem,
N_("ADDR[K|M|G]"),
N_("Remove any memory regions above ADDR."));
}
GRUB_MOD_FINI(mmap)
{
grub_unregister_command (cmd);
grub_unregister_command (cmd_cut);
}