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

Long Linux command line support.

Browse source 
* grub-core/loader/i386/linux.c (GRUB_LINUX_CL_END_OFFSET): Removed.
	(maximal_cmdline_size): New variable.
	(allocate_pages): Use maximal_cmdline_size.
	(grub_cmd_linux): Set and use maximal_cmdline_size.
	* grub-core/loader/i386/pc/linux.c (GRUB_LINUX_CL_END_OFFSET): Removed.
	(allocate_pages): Use maximal_cmdline_size.
	(grub_cmd_linux): Set and use maximal_cmdline_size.
	* include/grub/i386/linux.h (GRUB_LINUX_SETUP_MOVE_SIZE): Removed.
	(linux_kernel_header): Add fields kernel_alignment, relocatable, pad
	and cmdline_size.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2011-05-18 09:56:33 +02:00
commit 05caa461e8
4 changed files with 46 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

16
grub-core/loader/i386/linux.c
View file

@ -57,7 +57,6 @@ GRUB_MOD_LICENSE ("GPLv3+");
#endif
#define GRUB_LINUX_CL_OFFSET 0x1000
#define GRUB_LINUX_CL_END_OFFSET 0x2000
static grub_dl_t my_mod;
@ -74,6 +73,7 @@ static grub_uint32_t prot_mode_pages;
static grub_uint32_t initrd_pages;
static struct grub_relocator *relocator = NULL;
static void *efi_mmap_buf;
static grub_size_t maximal_cmdline_size;
#ifdef GRUB_MACHINE_EFI
static grub_efi_uintn_t efi_mmap_size;
#else
@ -189,7 +189,7 @@ allocate_pages (grub_size_t prot_size)
grub_err_t err;
/* Make sure that each size is aligned to a page boundary. */
real_size = GRUB_LINUX_CL_END_OFFSET;
real_size = GRUB_LINUX_CL_OFFSET + maximal_cmdline_size;
prot_size = page_align (prot_size);
mmap_size = find_mmap_size ();
@ -663,6 +663,14 @@ grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
goto fail;
}
if (grub_le_to_cpu16 (lh.version) >= 0x0206)
maximal_cmdline_size = grub_le_to_cpu32 (lh.cmdline_size) + 1;
else
maximal_cmdline_size = 256;
if (maximal_cmdline_size < 128)
maximal_cmdline_size = 128;
setup_sects = lh.setup_sects;
/* If SETUP_SECTS is not set, set it to the default (4). */
@ -676,7 +684,7 @@ grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
goto fail;
params = (struct linux_kernel_params *) real_mode_mem;
grub_memset (params, 0, GRUB_LINUX_CL_END_OFFSET);
grub_memset (params, 0, GRUB_LINUX_CL_OFFSET + maximal_cmdline_size);
grub_memcpy (&params->setup_sects, &lh.setup_sects, sizeof (lh) - 0x1F1);
params->ps_mouse = params->padding10 = 0;
@ -871,7 +879,7 @@ grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
grub_create_loader_cmdline (argc, argv,
(char *)real_mode_mem + GRUB_LINUX_CL_OFFSET
+ sizeof (LINUX_IMAGE) - 1,
GRUB_LINUX_CL_END_OFFSET - GRUB_LINUX_CL_OFFSET
maximal_cmdline_size
- (sizeof (LINUX_IMAGE) - 1));
len = prot_size;