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[PATCH v11 10/11] LoongArch: add efistub kernel support
From: |
Xiaotian Wu |
Subject: |
[PATCH v11 10/11] LoongArch: add efistub kernel support |
Date: |
Fri, 2 Sep 2022 17:38:26 +0800 |
Signed-off-by: Xiaotian Wu <wuxiaotian@loongson.cn>
Signed-off-by: Sun Haiyong <sunhaiyong@loongson.cn>
---
gentpl.py | 2 +-
grub-core/loader/loongarch64/linux.c | 329 ++++++++++++++++++++++++++-
include/grub/loongarch64/linux.h | 15 +-
3 files changed, 335 insertions(+), 11 deletions(-)
diff --git a/gentpl.py b/gentpl.py
index fa53e17e8..832d28ae0 100644
--- a/gentpl.py
+++ b/gentpl.py
@@ -80,7 +80,7 @@ GROUPS["terminfomodule"] = GRUB_PLATFORMS[:];
for i in GROUPS["terminfoinkernel"]: GROUPS["terminfomodule"].remove(i)
# Flattened Device Trees (FDT)
-GROUPS["fdt"] = [ "arm64_efi", "arm_uboot", "arm_efi", "riscv32_efi",
"riscv64_efi" ]
+GROUPS["fdt"] = [ "arm64_efi", "arm_uboot", "arm_efi", "loongarch64_efi",
"riscv32_efi", "riscv64_efi" ]
# Needs software helpers for division
# Must match GRUB_DIVISION_IN_SOFTWARE in misc.h
diff --git a/grub-core/loader/loongarch64/linux.c
b/grub-core/loader/loongarch64/linux.c
index d9d39a20c..fa5f7c01e 100644
--- a/grub-core/loader/loongarch64/linux.c
+++ b/grub-core/loader/loongarch64/linux.c
@@ -16,28 +16,342 @@
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <grub/charset.h>
#include <grub/command.h>
-#include <grub/dl.h>
+#include <grub/err.h>
+#include <grub/file.h>
+#include <grub/fdt.h>
+#include <grub/linux.h>
+#include <grub/loader.h>
+#include <grub/mm.h>
+#include <grub/types.h>
+#include <grub/cpu/linux.h>
+#include <grub/efi/efi.h>
+#include <grub/efi/fdtload.h>
+#include <grub/efi/memory.h>
+#include <grub/efi/pe32.h>
+#include <grub/i18n.h>
#include <grub/lib/cmdline.h>
+#include <grub/verify.h>
GRUB_MOD_LICENSE ("GPLv3+");
+static grub_dl_t my_mod;
+static int loaded;
+
+static void *kernel_addr;
+static grub_uint64_t kernel_size;
+
+static char *linux_args;
+static grub_uint32_t cmdline_size;
+
+static grub_addr_t initrd_start;
+static grub_addr_t initrd_end;
+
+grub_err_t
+grub_arch_efi_linux_check_image (struct linux_arch_kernel_header * lh)
+{
+ if ((lh->code0 & 0xffff) != GRUB_PE32_MAGIC)
+ return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
+ N_("plain image kernel not supported - rebuild with
CONFIG_(U)EFI_STUB enabled"));
+
+ grub_dprintf ("linux", "UEFI stub kernel:\n");
+ grub_dprintf ("linux", "PE/COFF header @ %08x\n", lh->hdr_offset);
+
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+finalize_params_linux (void)
+{
+ int node, retval;
+
+ void *fdt;
+
+ fdt = grub_fdt_load (GRUB_EFI_LINUX_FDT_EXTRA_SPACE);
+
+ if (!fdt)
+ goto failure;
+
+ node = grub_fdt_find_subnode (fdt, 0, "chosen");
+ if (node < 0)
+ node = grub_fdt_add_subnode (fdt, 0, "chosen");
+
+ if (node < 1)
+ goto failure;
+
+ /* Set initrd info */
+ if (initrd_start && initrd_end > initrd_start)
+ {
+ grub_dprintf ("linux", "Initrd @ %p-%p\n",
+ (void *) initrd_start, (void *) initrd_end);
+
+ retval = grub_fdt_set_prop64 (fdt, node, "linux,initrd-start",
+ initrd_start);
+ if (retval)
+ goto failure;
+ retval = grub_fdt_set_prop64 (fdt, node, "linux,initrd-end",
+ initrd_end);
+ if (retval)
+ goto failure;
+ }
+
+ if (grub_fdt_install() != GRUB_ERR_NONE)
+ goto failure;
+
+ return GRUB_ERR_NONE;
+
+failure:
+ grub_fdt_unload();
+ return grub_error(GRUB_ERR_BAD_OS, "failed to install/update FDT");
+}
+
+grub_err_t
+grub_arch_efi_linux_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_efi_loaded_image_t *loaded_image;
+ int len;
+
+ mempath = grub_malloc (2 * sizeof (grub_efi_memory_mapped_device_path_t));
+ if (!mempath)
+ return grub_errno;
+
+ mempath[0].header.type = GRUB_EFI_HARDWARE_DEVICE_PATH_TYPE;
+ 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 = 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;
+ mempath[1].header.length = sizeof (grub_efi_device_path_t);
+
+ b = grub_efi_system_table->boot_services;
+ status = b->load_image (0, grub_efi_image_handle,
+ (grub_efi_device_path_t *) mempath,
+ (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", args);
+
+ /* Convert command line to UCS-2 */
+ loaded_image = grub_efi_get_loaded_image (image_handle);
+ loaded_image->load_options_size = len =
+ (grub_strlen (args) + 1) * sizeof (grub_efi_char16_t);
+ loaded_image->load_options =
+ grub_efi_allocate_any_pages (GRUB_EFI_BYTES_TO_PAGES
(loaded_image->load_options_size));
+ if (!loaded_image->load_options)
+ return grub_errno;
+
+ loaded_image->load_options_size =
+ 2 * grub_utf8_to_utf16 (loaded_image->load_options, len,
+ (grub_uint8_t *) args, len, NULL);
+
+ grub_dprintf ("linux", "starting image %p\n", image_handle);
+ status = b->start_image (image_handle, 0, NULL);
+
+ /* When successful, not reached */
+ b->unload_image (image_handle);
+ grub_efi_free_pages ((grub_addr_t) loaded_image->load_options,
+ GRUB_EFI_BYTES_TO_PAGES
(loaded_image->load_options_size));
+
+ return grub_errno;
+}
+
+static grub_err_t
+grub_linux_boot (void)
+{
+ if (finalize_params_linux () != GRUB_ERR_NONE)
+ return grub_errno;
+
+ return (grub_arch_efi_linux_boot_image((grub_addr_t)kernel_addr,
+ kernel_size, linux_args));
+}
+
+static grub_err_t
+grub_linux_unload (void)
+{
+ grub_dl_unref (my_mod);
+ loaded = 0;
+ if (initrd_start)
+ grub_efi_free_pages ((grub_efi_physical_address_t) initrd_start,
+ GRUB_EFI_BYTES_TO_PAGES (initrd_end - initrd_start));
+ initrd_start = initrd_end = 0;
+ grub_free (linux_args);
+ if (kernel_addr)
+ grub_efi_free_pages ((grub_addr_t) kernel_addr,
+ GRUB_EFI_BYTES_TO_PAGES (kernel_size));
+ grub_fdt_unload ();
+ return GRUB_ERR_NONE;
+}
+
+#define INITRD_MAX_ADDRESS_OFFSET (32ULL * 1024 * 1024 * 1024)
+
+/*
+ * This function returns a pointer to a legally allocated initrd buffer,
+ * or NULL if unsuccessful
+ */
+static void *
+allocate_initrd_mem (int initrd_pages)
+{
+ grub_addr_t max_addr;
+
+ if (grub_efi_get_ram_base (&max_addr) != GRUB_ERR_NONE)
+ return NULL;
+
+ max_addr += INITRD_MAX_ADDRESS_OFFSET - 1;
+
+ return grub_efi_allocate_pages_real (max_addr, initrd_pages,
+ GRUB_EFI_ALLOCATE_MAX_ADDRESS,
+ GRUB_EFI_LOADER_DATA);
+}
+
static grub_err_t
grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
- int argc __attribute__ ((unused)),
- char *argv[] __attribute__ ((unused)))
+ int argc, char *argv[])
{
- grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET, N_("Linux not supported yet"));
+ struct grub_linux_initrd_context initrd_ctx = { 0, 0, 0 };
+ int initrd_size, initrd_pages;
+ void *initrd_mem = NULL;
+
+ if (argc == 0)
+ {
+ grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
+ goto fail;
+ }
+
+ if (!loaded)
+ {
+ grub_error (GRUB_ERR_BAD_ARGUMENT,
+ N_("you need to load the kernel first"));
+ goto fail;
+ }
+
+ if (grub_initrd_init (argc, argv, &initrd_ctx))
+ goto fail;
+
+ initrd_size = grub_get_initrd_size (&initrd_ctx);
+ grub_dprintf ("linux", "Loading initrd\n");
+
+ initrd_pages = (GRUB_EFI_BYTES_TO_PAGES (initrd_size));
+ initrd_mem = allocate_initrd_mem (initrd_pages);
+
+ if (!initrd_mem)
+ {
+ grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
+ goto fail;
+ }
+
+ if (grub_initrd_load (&initrd_ctx, initrd_mem))
+ goto fail;
+
+ initrd_start = (grub_addr_t) initrd_mem;
+ initrd_end = initrd_start + initrd_size;
+ grub_dprintf ("linux", "[addr=%p, size=0x%x]\n",
+ (void *) initrd_start, initrd_size);
+
+ fail:
+ grub_initrd_close (&initrd_ctx);
+ if (initrd_mem && !initrd_start)
+ grub_efi_free_pages ((grub_addr_t) initrd_mem, initrd_pages);
return grub_errno;
}
static grub_err_t
grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
- int argc __attribute__ ((unused)),
- char *argv[] __attribute__ ((unused)))
+ int argc, char *argv[])
{
- grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET, N_("Linux not supported yet"));
+ grub_file_t file = 0;
+ struct linux_arch_kernel_header lh;
+ grub_err_t err;
+
+ grub_dl_ref (my_mod);
+
+ if (argc == 0)
+ {
+ grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
+ goto fail;
+ }
+
+ file = grub_file_open (argv[0], GRUB_FILE_TYPE_LINUX_KERNEL);
+ if (!file)
+ goto fail;
+
+ kernel_size = grub_file_size (file);
+
+ if (grub_file_read (file, &lh, sizeof (lh)) < (long) sizeof (lh))
+ return grub_errno;
+
+ if (grub_arch_efi_linux_check_image (&lh) != GRUB_ERR_NONE)
+ goto fail;
+
+ grub_loader_unset();
+
+ grub_dprintf ("linux", "kernel file size: %lld\n", (long long) kernel_size);
+ kernel_addr = grub_efi_allocate_any_pages (GRUB_EFI_BYTES_TO_PAGES
(kernel_size));
+ grub_dprintf ("linux", "kernel numpages: %lld\n",
+ (long long) GRUB_EFI_BYTES_TO_PAGES (kernel_size));
+ if (!kernel_addr)
+ {
+ grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
+ goto fail;
+ }
+
+ grub_file_seek (file, 0);
+ if (grub_file_read (file, kernel_addr, kernel_size)
+ < (grub_int64_t) kernel_size)
+ {
+ if (!grub_errno)
+ grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"), argv[0]);
+ goto fail;
+ }
+
+ grub_dprintf ("linux", "kernel @ %p\n", kernel_addr);
+
+ cmdline_size = grub_loader_cmdline_size (argc, argv) + sizeof (LINUX_IMAGE);
+ linux_args = grub_malloc (cmdline_size);
+ if (!linux_args)
+ {
+ grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
+ goto fail;
+ }
+ grub_memcpy (linux_args, LINUX_IMAGE, sizeof (LINUX_IMAGE));
+ err = grub_create_loader_cmdline (argc, argv,
+ linux_args + sizeof (LINUX_IMAGE) - 1,
+ cmdline_size,
+ GRUB_VERIFY_KERNEL_CMDLINE);
+ if (err)
+ goto fail;
+
+ if (grub_errno == GRUB_ERR_NONE)
+ {
+ grub_loader_set (grub_linux_boot, grub_linux_unload, 0);
+ loaded = 1;
+ }
+
+fail:
+ if (file)
+ grub_file_close (file);
+
+ if (grub_errno != GRUB_ERR_NONE)
+ {
+ grub_dl_unref (my_mod);
+ loaded = 0;
+ }
+
+ if (linux_args && !loaded)
+ grub_free (linux_args);
+
+ if (kernel_addr && !loaded)
+ grub_efi_free_pages ((grub_addr_t) kernel_addr,
+ GRUB_EFI_BYTES_TO_PAGES (kernel_size));
return grub_errno;
}
@@ -50,6 +364,7 @@ GRUB_MOD_INIT (linux)
N_("FILE [ARGS...]"), N_("Load Linux."));
cmd_initrd = grub_register_command ("initrd", grub_cmd_initrd,
N_("FILE"), N_("Load initrd."));
+ my_mod = mod;
}
GRUB_MOD_FINI (linux)
diff --git a/include/grub/loongarch64/linux.h b/include/grub/loongarch64/linux.h
index 76fe693f4..5b89c8c55 100644
--- a/include/grub/loongarch64/linux.h
+++ b/include/grub/loongarch64/linux.h
@@ -19,11 +19,20 @@
#ifndef GRUB_LOONGARCH64_LINUX_HEADER
#define GRUB_LOONGARCH64_LINUX_HEADER 1
+#include <grub/types.h>
+
struct linux_loongarch64_kernel_header
{
- /*
- * TODO
- */
+ grub_uint32_t code0; /* Executable code */
+ grub_uint32_t code1; /* Executable code */
+ grub_uint64_t text_offset; /* Image load offset */
+ grub_uint64_t res0; /* reserved */
+ grub_uint64_t res1; /* reserved */
+ grub_uint64_t res2; /* reserved */
+ grub_uint64_t res3; /* reserved */
+ grub_uint64_t res4; /* reserved */
+ grub_uint32_t res5; /* reserved */
+ grub_uint32_t hdr_offset; /* Offset of PE/COFF header */
};
#define linux_arch_kernel_header linux_loongarch64_kernel_header
--
2.35.1
- [PATCH v11 02/11] Add LoongArch definitions, (continued)
- [PATCH v11 02/11] Add LoongArch definitions, Xiaotian Wu, 2022/09/02
- [PATCH v11 01/11] PE: Add LoongArch definitions, Xiaotian Wu, 2022/09/02
- [PATCH v11 03/11] LoongArch: Add setjmp implementation, Xiaotian Wu, 2022/09/02
- [PATCH v11 04/11] LoongArch: Add early startup code, Xiaotian Wu, 2022/09/02
- [PATCH v11 05/11] LoongArch: Add stubs for Linux loading commands, Xiaotian Wu, 2022/09/02
- [PATCH v11 06/11] LoongArch: Add awareness for LoongArch relocations, Xiaotian Wu, 2022/09/02
- [PATCH v11 07/11] LoongArch: Add auxiliary files, Xiaotian Wu, 2022/09/02
- [PATCH v11 08/11] LoongArch: Add to build system, Xiaotian Wu, 2022/09/02
- [PATCH v11 09/11] LoongArch: Support new relocation types in v2.00 ABI, Xiaotian Wu, 2022/09/02
- [PATCH v11 11/11] tests: add support for LoongArch, Xiaotian Wu, 2022/09/02
- [PATCH v11 10/11] LoongArch: add efistub kernel support,
Xiaotian Wu <=
- Re: [PATCH v11 00/11] Add support for LoongArch, Xiaotian Wu, 2022/09/19