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arm64: Export useful functions from linux.c

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Signed-off-by: Fu Wei <fu.wei@linaro.org>
This commit is contained in:
Fu Wei 2015-05-07 15:11:04 +02:00 committed by Vladimir Serbinenko
parent cc699535e5
commit f8451af825
5 changed files with 49 additions and 37 deletions
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2
gentpl.py
View file

@ -759,7 +759,7 @@ def image(defn, platform):
if test x$(TARGET_APPLE_LINKER) = x1; then \
$(MACHO2IMG) $< $@; \
else \
$(TARGET_OBJCOPY) $(""" + cname(defn) + """_OBJCOPYFLAGS) --strip-unneeded -R .note -R .comment -R .note.gnu.build-id -R .MIPS.abiflags -R .reginfo -R .rel.dyn -R .note.gnu.gold-version $< $@; \
$(TARGET_OBJCOPY) $(""" + cname(defn) + """_OBJCOPYFLAGS) --strip-unneeded -R .note -R .comment -R .note.gnu.build-id -R .MIPS.abiflags -R .reginfo -R .rel.dyn -R .note.gnu.gold-version -R .hash -R .dynsym -R .dynstr -R .rel.text $< $@; \
fi
""")

59
grub-core/loader/arm64/linux.c
View file

@ -33,12 +33,6 @@
GRUB_MOD_LICENSE ("GPLv3+");
#define GRUB_EFI_PAGE_SHIFT 12
#define BYTES_TO_PAGES(bytes) (((bytes) + 0xfff) >> GRUB_EFI_PAGE_SHIFT)
#define GRUB_EFI_PE_MAGIC 0x5A4D
static grub_efi_guid_t fdt_guid = GRUB_EFI_DEVICE_TREE_GUID;
static grub_dl_t my_mod;
static int loaded;
@ -58,6 +52,7 @@ static void *
get_firmware_fdt (void)
{
grub_efi_configuration_table_t *tables;
grub_efi_guid_t fdt_guid = GRUB_EFI_DEVICE_TREE_GUID;
void *firmware_fdt = NULL;
unsigned int i;
@ -75,8 +70,8 @@ get_firmware_fdt (void)
return firmware_fdt;
}
static void
get_fdt (void)
void *
grub_linux_get_fdt (void)
{
void *raw_fdt;
grub_size_t size;
@ -99,7 +94,7 @@ get_fdt (void)
grub_dprintf ("linux", "allocating %ld bytes for fdt\n", size);
fdt = grub_efi_allocate_pages (0, BYTES_TO_PAGES (size));
if (!fdt)
return;
return NULL;
if (raw_fdt)
{
@ -110,10 +105,11 @@ get_fdt (void)
{
grub_fdt_create_empty_tree (fdt, size);
}
return fdt;
}
static grub_err_t
check_kernel (struct grub_arm64_linux_kernel_header *lh)
grub_err_t
grub_arm64_uefi_check_image (struct grub_arm64_linux_kernel_header * lh)
{
if (lh->magic != GRUB_ARM64_LINUX_MAGIC)
return grub_error(GRUB_ERR_BAD_OS, "invalid magic number");
@ -131,14 +127,14 @@ check_kernel (struct grub_arm64_linux_kernel_header *lh)
}
static grub_err_t
finalize_params (void)
finalize_params_linux (void)
{
grub_efi_boot_services_t *b;
grub_efi_guid_t fdt_guid = GRUB_EFI_DEVICE_TREE_GUID;
grub_efi_status_t status;
int node, retval;
get_fdt ();
if (!fdt)
if (!grub_linux_get_fdt ())
goto failure;
node = grub_fdt_find_subnode (fdt, 0, "chosen");
@ -240,21 +236,16 @@ out:
return grub_errno;
}
static grub_err_t
grub_linux_boot (void)
grub_err_t
grub_arm64_uefi_boot_image (grub_addr_t addr, grub_size_t size, char *args)
{
grub_efi_memory_mapped_device_path_t *mempath;
grub_efi_handle_t image_handle;
grub_efi_boot_services_t *b;
grub_efi_status_t status;
grub_err_t retval;
grub_efi_loaded_image_t *loaded_image;
int len;
retval = finalize_params();
if (retval != GRUB_ERR_NONE)
return retval;
mempath = grub_malloc (2 * sizeof (grub_efi_memory_mapped_device_path_t));
if (!mempath)
return grub_errno;
@ -263,8 +254,8 @@ grub_linux_boot (void)
mempath[0].header.subtype = GRUB_EFI_MEMORY_MAPPED_DEVICE_PATH_SUBTYPE;
mempath[0].header.length = grub_cpu_to_le16_compile_time (sizeof (*mempath));
mempath[0].memory_type = GRUB_EFI_LOADER_DATA;
mempath[0].start_address = (grub_addr_t) kernel_addr;
mempath[0].end_address = (grub_addr_t) kernel_addr + kernel_size;
mempath[0].start_address = addr;
mempath[0].end_address = addr + size;
mempath[1].header.type = GRUB_EFI_END_DEVICE_PATH_TYPE;
mempath[1].header.subtype = GRUB_EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE;
@ -273,16 +264,16 @@ grub_linux_boot (void)
b = grub_efi_system_table->boot_services;
status = b->load_image (0, grub_efi_image_handle,
(grub_efi_device_path_t *) mempath,
kernel_addr, kernel_size, &image_handle);
(void *) addr, size, &image_handle);
if (status != GRUB_EFI_SUCCESS)
return grub_error (GRUB_ERR_BAD_OS, "cannot load image");
grub_dprintf ("linux", "linux command line: '%s'\n", linux_args);
grub_dprintf ("linux", "linux command line: '%s'\n", args);
/* Convert command line to UCS-2 */
loaded_image = grub_efi_get_loaded_image (image_handle);
loaded_image->load_options_size = len =
(grub_strlen (linux_args) + 1) * sizeof (grub_efi_char16_t);
(grub_strlen (args) + 1) * sizeof (grub_efi_char16_t);
loaded_image->load_options =
grub_efi_allocate_pages (0,
BYTES_TO_PAGES (loaded_image->load_options_size));
@ -291,9 +282,9 @@ grub_linux_boot (void)
loaded_image->load_options_size =
2 * grub_utf8_to_utf16 (loaded_image->load_options, len,
(grub_uint8_t *) linux_args, len, NULL);
(grub_uint8_t *) args, len, NULL);
grub_dprintf("linux", "starting image %p\n", image_handle);
grub_dprintf ("linux", "starting image %p\n", image_handle);
status = b->start_image (image_handle, 0, NULL);
/* When successful, not reached */
@ -304,6 +295,16 @@ grub_linux_boot (void)
return grub_errno;
}
static grub_err_t
grub_linux_boot (void)
{
if (finalize_params_linux () != GRUB_ERR_NONE)
return grub_errno;
return (grub_arm64_uefi_boot_image((grub_addr_t)kernel_addr,
kernel_size, linux_args));
}
static grub_err_t
grub_linux_unload (void)
{
@ -400,7 +401,7 @@ grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
if (grub_file_read (file, &lh, sizeof (lh)) < (long) sizeof (lh))
return grub_errno;
if (check_kernel (&lh) != GRUB_ERR_NONE)
if (grub_arm64_uefi_check_image (&lh) != GRUB_ERR_NONE)
goto fail;
grub_loader_unset();

11
grub-core/loader/i386/linux.c
View file

@ -69,7 +69,6 @@ static grub_addr_t prot_mode_target;
static void *initrd_mem;
static grub_addr_t initrd_mem_target;
static grub_size_t prot_init_space;
static grub_uint32_t initrd_pages;
static struct grub_relocator *relocator = NULL;
static void *efi_mmap_buf;
static grub_size_t maximal_cmdline_size;
@ -1046,7 +1045,7 @@ static grub_err_t
grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
int argc, char *argv[])
{
grub_size_t size = 0;
grub_size_t size = 0, aligned_size = 0;
grub_addr_t addr_min, addr_max;
grub_addr_t addr;
grub_err_t err;
@ -1068,8 +1067,7 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
goto fail;
size = grub_get_initrd_size (&initrd_ctx);
initrd_pages = (page_align (size) >> 12);
aligned_size = ALIGN_UP (size, 4096);
/* Get the highest address available for the initrd. */
if (grub_le_to_cpu16 (linux_params.version) >= 0x0203)
@ -1097,7 +1095,7 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
addr_min = (grub_addr_t) prot_mode_target + prot_init_space;
/* Put the initrd as high as possible, 4KiB aligned. */
addr = (addr_max - size) & ~0xFFF;
addr = (addr_max - aligned_size) & ~0xFFF;
if (addr < addr_min)
{
@ -1108,7 +1106,8 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
{
grub_relocator_chunk_t ch;
err = grub_relocator_alloc_chunk_align (relocator, &ch,
addr_min, addr, size, 0x1000,
addr_min, addr, aligned_size,
0x1000,
GRUB_RELOCATOR_PREFERENCE_HIGH,
1);
if (err)

3
grub-core/loader/linux.c
View file

@ -205,7 +205,8 @@ grub_initrd_init (int argc, char *argv[],
initrd_ctx->nfiles++;
initrd_ctx->components[i].size
= grub_file_size (initrd_ctx->components[i].file);
initrd_ctx->size += ALIGN_UP (initrd_ctx->components[i].size, 4);
if (argc != 1)
initrd_ctx->size += ALIGN_UP (initrd_ctx->components[i].size, 4);
}
if (newc)

11
include/grub/arm64/linux.h
View file

@ -23,6 +23,10 @@
#define GRUB_ARM64_LINUX_MAGIC 0x644d5241 /* 'ARM\x64' */
#define GRUB_EFI_PAGE_SHIFT 12
#define BYTES_TO_PAGES(bytes) (((bytes) + 0xfff) >> GRUB_EFI_PAGE_SHIFT)
#define GRUB_EFI_PE_MAGIC 0x5A4D
/* From linux/Documentation/arm64/booting.txt */
struct grub_arm64_linux_kernel_header
{
@ -38,4 +42,11 @@ struct grub_arm64_linux_kernel_header
grub_uint32_t hdr_offset; /* Offset of PE/COFF header */
};
/* Declare the functions for getting dtb and checking/booting image */
void *grub_linux_get_fdt (void);
grub_err_t grub_arm64_uefi_check_image (struct grub_arm64_linux_kernel_header
*lh);
grub_err_t grub_arm64_uefi_boot_image (grub_addr_t addr, grub_size_t size,
char *args);
#endif /* ! GRUB_LINUX_CPU_HEADER */