+++ /dev/null
-/*
- * GRUB -- GRand Unified Bootloader
- * Copyright (C) 2006,2007,2008,2009 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/file.h>
-#include <grub/disk.h>
-#include <grub/err.h>
-#include <grub/misc.h>
-#include <grub/types.h>
-#include <grub/dl.h>
-#include <grub/mm.h>
-#include <grub/term.h>
-#include <grub/cpu/linux.h>
-#include <grub/efi/api.h>
-#include <grub/efi/efi.h>
-#include <grub/efi/uga_draw.h>
-#include <grub/pci.h>
-#include <grub/command.h>
-#include <grub/memory.h>
-#include <grub/i18n.h>
-
-#define GRUB_LINUX_CL_OFFSET 0x1000
-#define GRUB_LINUX_CL_END_OFFSET 0x2000
-
-#define NEXT_MEMORY_DESCRIPTOR(desc, size) \
- ((grub_efi_memory_descriptor_t *) ((char *) (desc) + (size)))
-
-static grub_dl_t my_mod;
-
-static grub_size_t linux_mem_size;
-static int loaded;
-static void *real_mode_mem;
-static void *prot_mode_mem;
-static void *initrd_mem;
-static grub_efi_uintn_t real_mode_pages;
-static grub_efi_uintn_t prot_mode_pages;
-static grub_efi_uintn_t initrd_pages;
-static void *mmap_buf;
-
-static grub_uint8_t gdt[] __attribute__ ((aligned(16))) =
- {
- /* NULL. */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- /* Reserved. */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- /* Code segment. */
- 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x9A, 0xCF, 0x00,
- /* Data segment. */
- 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x92, 0xCF, 0x00
- };
-
-struct gdt_descriptor
-{
- grub_uint16_t limit;
- void *base;
-} __attribute__ ((packed));
-
-static struct gdt_descriptor gdt_desc =
- {
- sizeof (gdt) - 1,
- gdt
- };
-
-struct idt_descriptor
-{
- grub_uint16_t limit;
- void *base;
-} __attribute__ ((packed));
-
-static struct idt_descriptor idt_desc =
- {
- 0,
- 0
- };
-
-static inline grub_size_t
-page_align (grub_size_t size)
-{
- return (size + (1 << 12) - 1) & (~((1 << 12) - 1));
-}
-
-/* Find the optimal number of pages for the memory map. Is it better to
- move this code to efi/mm.c? */
-static grub_efi_uintn_t
-find_mmap_size (void)
-{
- static grub_efi_uintn_t mmap_size = 0;
-
- if (mmap_size != 0)
- return mmap_size;
-
- mmap_size = (1 << 12);
- while (1)
- {
- int ret;
- grub_efi_memory_descriptor_t *mmap;
- grub_efi_uintn_t desc_size;
-
- mmap = grub_malloc (mmap_size);
- if (! mmap)
- return 0;
-
- ret = grub_efi_get_memory_map (&mmap_size, mmap, 0, &desc_size, 0);
- grub_free (mmap);
-
- if (ret < 0)
- grub_fatal ("cannot get memory map");
- else if (ret > 0)
- break;
-
- mmap_size += (1 << 12);
- }
-
- /* Increase the size a bit for safety, because GRUB allocates more on
- later, and EFI itself may allocate more. */
- mmap_size += (1 << 12);
-
- return page_align (mmap_size);
-}
-
-static void
-free_pages (void)
-{
- if (real_mode_mem)
- {
- grub_efi_free_pages ((grub_addr_t) real_mode_mem, real_mode_pages);
- real_mode_mem = 0;
- }
-
- if (prot_mode_mem)
- {
- grub_efi_free_pages ((grub_addr_t) prot_mode_mem, prot_mode_pages);
- prot_mode_mem = 0;
- }
-
- if (initrd_mem)
- {
- grub_efi_free_pages ((grub_addr_t) initrd_mem, initrd_pages);
- initrd_mem = 0;
- }
-}
-
-/* Allocate pages for the real mode code and the protected mode code
- for linux as well as a memory map buffer. */
-static int
-allocate_pages (grub_size_t prot_size)
-{
- grub_efi_uintn_t desc_size;
- grub_efi_memory_descriptor_t *mmap, *mmap_end;
- grub_efi_uintn_t mmap_size, tmp_mmap_size;
- grub_efi_memory_descriptor_t *desc;
- grub_size_t real_size;
-
- /* Make sure that each size is aligned to a page boundary. */
- real_size = GRUB_LINUX_CL_END_OFFSET;
- prot_size = page_align (prot_size);
- mmap_size = find_mmap_size ();
-
- grub_dprintf ("linux", "real_size = %x, prot_size = %x, mmap_size = %x\n",
- (unsigned) real_size, (unsigned) prot_size, (unsigned) mmap_size);
-
- /* Calculate the number of pages; Combine the real mode code with
- the memory map buffer for simplicity. */
- real_mode_pages = ((real_size + mmap_size) >> 12);
- prot_mode_pages = (prot_size >> 12);
-
- /* Initialize the memory pointers with NULL for convenience. */
- real_mode_mem = 0;
- prot_mode_mem = 0;
-
- /* Read the memory map temporarily, to find free space. */
- mmap = grub_malloc (mmap_size);
- if (! mmap)
- return 0;
-
- tmp_mmap_size = mmap_size;
- if (grub_efi_get_memory_map (&tmp_mmap_size, mmap, 0, &desc_size, 0) <= 0)
- grub_fatal ("cannot get memory map");
-
- mmap_end = NEXT_MEMORY_DESCRIPTOR (mmap, tmp_mmap_size);
-
- /* First, find free pages for the real mode code
- and the memory map buffer. */
- for (desc = mmap;
- desc < mmap_end;
- desc = NEXT_MEMORY_DESCRIPTOR (desc, desc_size))
- {
- /* Probably it is better to put the real mode code in the traditional
- space for safety. */
- if (desc->type == GRUB_EFI_CONVENTIONAL_MEMORY
- && desc->physical_start <= 0x90000
- && desc->num_pages >= real_mode_pages)
- {
- grub_efi_physical_address_t physical_end;
- grub_efi_physical_address_t addr;
-
- physical_end = desc->physical_start + (desc->num_pages << 12);
- if (physical_end > 0x90000)
- physical_end = 0x90000;
-
- grub_dprintf ("linux", "physical_start = %x, physical_end = %x\n",
- (unsigned) desc->physical_start,
- (unsigned) physical_end);
- addr = physical_end - real_size - mmap_size;
- if (addr < 0x10000)
- continue;
-
- grub_dprintf ("linux", "trying to allocate %u pages at %lx\n",
- (unsigned) real_mode_pages, (unsigned long) addr);
- real_mode_mem = grub_efi_allocate_pages (addr, real_mode_pages);
- if (! real_mode_mem)
- grub_fatal ("cannot allocate pages");
-
- desc->num_pages -= real_mode_pages;
- break;
- }
- }
-
- if (! real_mode_mem)
- {
- grub_error (GRUB_ERR_OUT_OF_MEMORY, "cannot allocate real mode pages");
- goto fail;
- }
-
- mmap_buf = (void *) ((char *) real_mode_mem + real_size);
-
- /* Next, find free pages for the protected mode code. */
- /* XXX what happens if anything is using this address? */
- prot_mode_mem = grub_efi_allocate_pages (0x100000, prot_mode_pages + 1);
- if (! prot_mode_mem)
- {
- grub_error (GRUB_ERR_OUT_OF_MEMORY,
- "cannot allocate protected mode pages");
- goto fail;
- }
-
- grub_dprintf ("linux", "real_mode_mem = %lx, real_mode_pages = %x, "
- "prot_mode_mem = %lx, prot_mode_pages = %x\n",
- (unsigned long) real_mode_mem, (unsigned) real_mode_pages,
- (unsigned long) prot_mode_mem, (unsigned) prot_mode_pages);
-
- grub_free (mmap);
- return 1;
-
- fail:
- grub_free (mmap);
- free_pages ();
- return 0;
-}
-
-static void
-grub_e820_add_region (struct grub_e820_mmap *e820_map, int *e820_num,
- grub_uint64_t start, grub_uint64_t size,
- grub_uint32_t type)
-{
- int n = *e820_num;
-
- if (n >= GRUB_E820_MAX_ENTRY)
- grub_fatal ("Too many e820 memory map entries");
-
- if ((n > 0) && (e820_map[n - 1].addr + e820_map[n - 1].size == start) &&
- (e820_map[n - 1].type == type))
- e820_map[n - 1].size += size;
- else
- {
- e820_map[n].addr = start;
- e820_map[n].size = size;
- e820_map[n].type = type;
- (*e820_num)++;
- }
-}
-
-#ifdef __x86_64__
-extern grub_uint8_t grub_linux_trampoline_start[];
-extern grub_uint8_t grub_linux_trampoline_end[];
-#endif
-
-static grub_err_t
-grub_linux_boot (void)
-{
- struct linux_kernel_params *params;
- grub_efi_uintn_t mmap_size;
- grub_efi_uintn_t map_key;
- grub_efi_uintn_t desc_size;
- grub_efi_uint32_t desc_version;
- int e820_num;
-
- params = real_mode_mem;
-
- grub_dprintf ("linux", "code32_start = %x, idt_desc = %lx, gdt_desc = %lx\n",
- (unsigned) params->code32_start,
- (unsigned long) &(idt_desc.limit),
- (unsigned long) &(gdt_desc.limit));
- grub_dprintf ("linux", "idt = %x:%lx, gdt = %x:%lx\n",
- (unsigned) idt_desc.limit, (unsigned long) idt_desc.base,
- (unsigned) gdt_desc.limit, (unsigned long) gdt_desc.base);
-
- auto int NESTED_FUNC_ATTR hook (grub_uint64_t, grub_uint64_t, grub_uint32_t);
- int NESTED_FUNC_ATTR hook (grub_uint64_t addr, grub_uint64_t size, grub_uint32_t type)
- {
- switch (type)
- {
- case GRUB_MACHINE_MEMORY_AVAILABLE:
- grub_e820_add_region (params->e820_map, &e820_num,
- addr, size, GRUB_E820_RAM);
- break;
-
-#ifdef GRUB_MACHINE_MEMORY_ACPI
- case GRUB_MACHINE_MEMORY_ACPI:
- grub_e820_add_region (params->e820_map, &e820_num,
- addr, size, GRUB_E820_ACPI);
- break;
-#endif
-
-#ifdef GRUB_MACHINE_MEMORY_NVS
- case GRUB_MACHINE_MEMORY_NVS:
- grub_e820_add_region (params->e820_map, &e820_num,
- addr, size, GRUB_E820_NVS);
- break;
-#endif
-
-#ifdef GRUB_MACHINE_MEMORY_CODE
- case GRUB_MACHINE_MEMORY_CODE:
- grub_e820_add_region (params->e820_map, &e820_num,
- addr, size, GRUB_E820_EXEC_CODE);
- break;
-#endif
-
- default:
- grub_e820_add_region (params->e820_map, &e820_num,
- addr, size, GRUB_E820_RESERVED);
- }
- return 0;
- }
-
- e820_num = 0;
- grub_mmap_iterate (hook);
- params->mmap_size = e820_num;
-
- mmap_size = find_mmap_size ();
- if (grub_efi_get_memory_map (&mmap_size, mmap_buf, &map_key,
- &desc_size, &desc_version) <= 0)
- grub_fatal ("cannot get memory map");
-
- if (! grub_efi_exit_boot_services (map_key))
- grub_fatal ("cannot exit boot services");
-
- /* Note that no boot services are available from here. */
-
- /* Pass EFI parameters. */
- if (grub_le_to_cpu16 (params->version) >= 0x0206)
- {
- params->v0206.efi_mem_desc_size = desc_size;
- params->v0206.efi_mem_desc_version = desc_version;
- params->v0206.efi_mmap = (grub_uint32_t) (unsigned long) mmap_buf;
- params->v0206.efi_mmap_size = mmap_size;
-#ifdef __x86_64__
- params->v0206.efi_mmap_hi = (grub_uint32_t) ((grub_uint64_t) mmap_buf >> 32);
-#endif
- }
- else if (grub_le_to_cpu16 (params->version) >= 0x0204)
- {
- params->v0204.efi_mem_desc_size = desc_size;
- params->v0204.efi_mem_desc_version = desc_version;
- params->v0204.efi_mmap = (grub_uint32_t) (unsigned long) mmap_buf;
- params->v0204.efi_mmap_size = mmap_size;
- }
-
-#ifdef __x86_64__
-
- grub_memcpy ((char *) prot_mode_mem + (prot_mode_pages << 12),
- grub_linux_trampoline_start,
- grub_linux_trampoline_end - grub_linux_trampoline_start);
-
- ((void (*) (unsigned long, void *)) ((char *) prot_mode_mem
- + (prot_mode_pages << 12)))
- (params->code32_start, real_mode_mem);
-
-#else
-
- /* Hardware interrupts are not safe any longer. */
- asm volatile ("cli" : : );
-
- /* Load the IDT and the GDT for the bootstrap. */
- asm volatile ("lidt %0" : : "m" (idt_desc));
- asm volatile ("lgdt %0" : : "m" (gdt_desc));
-
- /* Pass parameters. */
- asm volatile ("movl %0, %%ecx" : : "m" (params->code32_start));
- asm volatile ("movl %0, %%esi" : : "m" (real_mode_mem));
-
- asm volatile ("xorl %%ebx, %%ebx" : : );
-
- /* Enter Linux. */
- asm volatile ("jmp *%%ecx" : : );
-
-#endif
-
- /* Never reach here. */
- return GRUB_ERR_NONE;
-}
-
-static grub_err_t
-grub_linux_unload (void)
-{
- free_pages ();
- grub_dl_unref (my_mod);
- loaded = 0;
- return GRUB_ERR_NONE;
-}
-
-static grub_efi_guid_t uga_draw_guid = GRUB_EFI_UGA_DRAW_GUID;
-
-
-#define RGB_MASK 0xffffff
-#define RGB_MAGIC 0x121314
-#define LINE_MIN 800
-#define LINE_MAX 4096
-#define FBTEST_STEP (0x10000 >> 2)
-#define FBTEST_COUNT 8
-
-static int
-find_line_len (grub_uint32_t *fb_base, grub_uint32_t *line_len)
-{
- grub_uint32_t *base = (grub_uint32_t *) (grub_target_addr_t) *fb_base;
- int i;
-
- for (i = 0; i < FBTEST_COUNT; i++, base += FBTEST_STEP)
- {
- if ((*base & RGB_MASK) == RGB_MAGIC)
- {
- int j;
-
- for (j = LINE_MIN; j <= LINE_MAX; j++)
- {
- if ((base[j] & RGB_MASK) == RGB_MAGIC)
- {
- *fb_base = (grub_uint32_t) (grub_target_addr_t) base;
- *line_len = j << 2;
-
- return 1;
- }
- }
-
- break;
- }
- }
-
- return 0;
-}
-
-static int
-find_framebuf (grub_uint32_t *fb_base, grub_uint32_t *line_len)
-{
- int found = 0;
-
- auto int NESTED_FUNC_ATTR find_card (grub_pci_device_t dev,
- grub_pci_id_t pciid);
-
- int NESTED_FUNC_ATTR find_card (grub_pci_device_t dev,
- grub_pci_id_t pciid)
- {
- grub_pci_address_t addr;
-
- addr = grub_pci_make_address (dev, 2);
- if (grub_pci_read (addr) >> 24 == 0x3)
- {
- int i;
-
- grub_printf ("Display controller: %d:%d.%d\nDevice id: %x\n",
- grub_pci_get_bus (dev), grub_pci_get_device (dev),
- grub_pci_get_function (dev), pciid);
- addr += 8;
- for (i = 0; i < 6; i++, addr += 4)
- {
- grub_uint32_t old_bar1, old_bar2, type;
- grub_uint64_t base64;
-
- old_bar1 = grub_pci_read (addr);
- if ((! old_bar1) || (old_bar1 & GRUB_PCI_ADDR_SPACE_IO))
- continue;
-
- type = old_bar1 & GRUB_PCI_ADDR_MEM_TYPE_MASK;
- if (type == GRUB_PCI_ADDR_MEM_TYPE_64)
- {
- if (i == 5)
- break;
-
- old_bar2 = grub_pci_read (addr + 4);
- }
- else
- old_bar2 = 0;
-
- base64 = old_bar2;
- base64 <<= 32;
- base64 |= (old_bar1 & GRUB_PCI_ADDR_MEM_MASK);
-
- grub_printf ("%s(%d): 0x%llx\n",
- ((old_bar1 & GRUB_PCI_ADDR_MEM_PREFETCH) ?
- "VMEM" : "MMIO"), i,
- (unsigned long long) base64);
-
- if ((old_bar1 & GRUB_PCI_ADDR_MEM_PREFETCH) && (! found))
- {
- *fb_base = base64;
- if (find_line_len (fb_base, line_len))
- found++;
- }
-
- if (type == GRUB_PCI_ADDR_MEM_TYPE_64)
- {
- i++;
- addr += 4;
- }
- }
- }
-
- return found;
- }
-
- grub_pci_iterate (find_card);
- return found;
-}
-
-static int
-grub_linux_setup_video (struct linux_kernel_params *params)
-{
- grub_efi_uga_draw_protocol_t *c;
- grub_uint32_t width, height, depth, rate, pixel, fb_base, line_len;
- int ret;
-
- c = grub_efi_locate_protocol (&uga_draw_guid, 0);
- if (! c)
- return 1;
-
- if (efi_call_5 (c->get_mode, c, &width, &height, &depth, &rate))
- return 1;
-
- grub_printf ("Video mode: %ux%u-%u@%u\n", width, height, depth, rate);
-
- grub_efi_set_text_mode (0);
- pixel = RGB_MAGIC;
- efi_call_10 (c->blt, c, (struct grub_efi_uga_pixel *) &pixel,
- GRUB_EFI_UGA_VIDEO_FILL, 0, 0, 0, 0, 1, height, 0);
- ret = find_framebuf (&fb_base, &line_len);
- grub_efi_set_text_mode (1);
-
- if (! ret)
- {
- grub_printf ("Can\'t find frame buffer address\n");
- return 1;
- }
-
- grub_printf ("Frame buffer base: 0x%x\n", fb_base);
- grub_printf ("Video line length: %d\n", line_len);
-
- params->lfb_width = width;
- params->lfb_height = height;
- params->lfb_depth = depth;
- params->lfb_line_len = line_len;
-
- params->lfb_base = fb_base;
- params->lfb_size = (line_len * params->lfb_height + 65535) >> 16;
-
- params->red_mask_size = 8;
- params->red_field_pos = 16;
- params->green_mask_size = 8;
- params->green_field_pos = 8;
- params->blue_mask_size = 8;
- params->blue_field_pos = 0;
- params->reserved_mask_size = 8;
- params->reserved_field_pos = 24;
-
- params->have_vga = GRUB_VIDEO_TYPE_VLFB;
- params->vid_mode = 0x338; /* 1024x768x32 */
-
- return 0;
-}
-
-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;
- struct linux_kernel_params *params;
- grub_uint8_t setup_sects;
- grub_size_t real_size, prot_size;
- grub_ssize_t len;
- 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))
- {
- grub_error (GRUB_ERR_BAD_OS, "invalid magic number");
- goto fail;
- }
-
- if (lh.setup_sects > GRUB_LINUX_MAX_SETUP_SECTS)
- {
- grub_error (GRUB_ERR_BAD_OS, "too many setup sectors");
- goto fail;
- }
-
- /* EFI support is quite new, so reject old versions. */
- if (lh.header != grub_cpu_to_le32 (GRUB_LINUX_MAGIC_SIGNATURE)
- || grub_le_to_cpu16 (lh.version) < 0x0203)
- {
- grub_error (GRUB_ERR_BAD_OS, "too old version");
- goto fail;
- }
-
- /* I'm not sure how to support zImage on EFI. */
- if (! (lh.loadflags & GRUB_LINUX_FLAG_BIG_KERNEL))
- {
- grub_error (GRUB_ERR_BAD_OS, "zImage is not supported");
- goto fail;
- }
-
- setup_sects = lh.setup_sects;
-
- /* If SETUP_SECTS is not set, set it to the default (4). */
- 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;
-
- if (! allocate_pages (prot_size))
- goto fail;
-
- params = (struct linux_kernel_params *) real_mode_mem;
- grub_memset (params, 0, GRUB_LINUX_CL_END_OFFSET);
- grub_memcpy (¶ms->setup_sects, &lh.setup_sects, sizeof (lh) - 0x1F1);
-
- params->ps_mouse = params->padding10 = 0;
-
- len = 0x400 - sizeof (lh);
- if (grub_file_read (file, (char *) real_mode_mem + sizeof (lh), len) != len)
- {
- grub_error (GRUB_ERR_FILE_READ_ERROR, "couldn't read file");
- goto fail;
- }
-
- /* XXX Linux assumes that only elilo can boot Linux on EFI!!! */
- params->type_of_loader = (LINUX_LOADER_ID_ELILO << 4);
-
- params->cl_magic = GRUB_LINUX_CL_MAGIC;
- params->cl_offset = 0x1000;
- params->cmd_line_ptr = (unsigned long) real_mode_mem + 0x1000;
- params->ramdisk_image = 0;
- params->ramdisk_size = 0;
-
- params->heap_end_ptr = GRUB_LINUX_HEAP_END_OFFSET;
- params->loadflags |= GRUB_LINUX_FLAG_CAN_USE_HEAP;
-
- /* These are not needed to be precise, because Linux uses these values
- only to raise an error when the decompression code cannot find good
- space. */
- params->ext_mem = ((32 * 0x100000) >> 10);
- params->alt_mem = ((32 * 0x100000) >> 10);
-
- {
- grub_term_output_t term;
- int found = 0;
- FOR_ACTIVE_TERM_OUTPUTS(term)
- if (grub_strcmp (term->name, "vga_text") == 0
- || grub_strcmp (term->name, "console") == 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->video_page = 0; /* ??? */
- params->video_mode = grub_efi_system_table->con_out->mode->mode;
- params->video_ega_bx = 0;
- params->have_vga = 0;
- params->font_size = 16; /* XXX */
-
- if (grub_le_to_cpu16 (params->version) >= 0x0206)
- {
- params->v0206.efi_signature = GRUB_LINUX_EFI_SIGNATURE;
- params->v0206.efi_system_table = (grub_uint32_t) (unsigned long) grub_efi_system_table;
-#ifdef __x86_64__
- params->v0206.efi_system_table_hi = (grub_uint32_t) ((grub_uint64_t) grub_efi_system_table >> 32);
-#endif
- }
- else if (grub_le_to_cpu16 (params->version) >= 0x0204)
- {
- params->v0204.efi_signature = GRUB_LINUX_EFI_SIGNATURE_0204;
- params->v0204.efi_system_table = (grub_uint32_t) (unsigned long) grub_efi_system_table;
- }
-
-#if 0
- /* The structure is zeroed already. */
-
- /* No VBE on EFI. */
- params->lfb_width = 0;
- params->lfb_height = 0;
- params->lfb_depth = 0;
- params->lfb_base = 0;
- params->lfb_size = 0;
- params->lfb_line_len = 0;
- params->red_mask_size = 0;
- params->red_field_pos = 0;
- params->green_mask_size = 0;
- params->green_field_pos = 0;
- params->blue_mask_size = 0;
- params->blue_field_pos = 0;
- params->reserved_mask_size = 0;
- params->reserved_field_pos = 0;
- params->vesapm_segment = 0;
- params->vesapm_offset = 0;
- params->lfb_pages = 0;
- params->vesa_attrib = 0;
-
- /* No APM on EFI. */
- params->apm_version = 0;
- params->apm_code_segment = 0;
- params->apm_entry = 0;
- params->apm_16bit_code_segment = 0;
- params->apm_data_segment = 0;
- params->apm_flags = 0;
- params->apm_code_len = 0;
- params->apm_data_len = 0;
-
- /* XXX is there any way to use SpeedStep on EFI? */
- params->ist_signature = 0;
- params->ist_command = 0;
- params->ist_event = 0;
- params->ist_perf_level = 0;
-
- /* Let the kernel probe the information. */
- grub_memset (params->hd0_drive_info, 0, sizeof (params->hd0_drive_info));
- grub_memset (params->hd1_drive_info, 0, sizeof (params->hd1_drive_info));
-
- /* No MCA on EFI. */
- params->rom_config_len = 0;
-
- /* No need to fake the BIOS's memory map. */
- params->mmap_size = 0;
-
- /* Let the kernel probe the information. */
- params->ps_mouse = 0;
-
- /* Clear padding for future compatibility. */
- grub_memset (params->padding1, 0, sizeof (params->padding1));
- grub_memset (params->padding2, 0, sizeof (params->padding2));
- grub_memset (params->padding3, 0, sizeof (params->padding3));
- grub_memset (params->padding4, 0, sizeof (params->padding4));
- grub_memset (params->padding5, 0, sizeof (params->padding5));
- grub_memset (params->padding6, 0, sizeof (params->padding6));
- grub_memset (params->padding7, 0, sizeof (params->padding7));
- grub_memset (params->padding8, 0, sizeof (params->padding8));
- grub_memset (params->padding9, 0, sizeof (params->padding9));
-
-#endif
-
- /* The other EFI parameters are filled when booting. */
-
- grub_file_seek (file, real_size + GRUB_DISK_SECTOR_SIZE);
-
- /* XXX there is no way to know if the kernel really supports EFI. */
- grub_printf (" [Linux-bzImage, setup=0x%x, size=0x%x]\n",
- (unsigned) real_size, (unsigned) prot_size);
-
- grub_linux_setup_video (params);
-
- /* Detect explicitly specified memory size, if any. */
- linux_mem_size = 0;
- for (i = 1; i < argc; i++)
- if (grub_memcmp (argv[i], "mem=", 4) == 0)
- {
- char *val = argv[i] + 4;
-
- linux_mem_size = grub_strtoul (val, &val, 0);
-
- if (grub_errno)
- {
- grub_errno = GRUB_ERR_NONE;
- linux_mem_size = 0;
- }
- else
- {
- int shift = 0;
-
- switch (grub_tolower (val[0]))
- {
- case 'g':
- shift += 10;
- case 'm':
- shift += 10;
- case 'k':
- shift += 10;
- default:
- break;
- }
-
- /* Check an overflow. */
- if (linux_mem_size > (~0UL >> shift))
- linux_mem_size = 0;
- else
- linux_mem_size <<= shift;
- }
- }
- else if (grub_memcmp (argv[i], "video=efifb", 11) == 0)
- {
- if (params->have_vga)
- params->have_vga = GRUB_VIDEO_TYPE_EFI;
- }
-
- /* Specify the boot file. */
- dest = grub_stpcpy ((char *) real_mode_mem + GRUB_LINUX_CL_OFFSET,
- "BOOT_IMAGE=");
- dest = grub_stpcpy (dest, argv[0]);
-
- /* Copy kernel parameters. */
- for (i = 1;
- i < argc
- && dest + grub_strlen (argv[i]) + 1 < ((char *) real_mode_mem
- + GRUB_LINUX_CL_END_OFFSET);
- i++)
- {
- *dest++ = ' ';
- dest = grub_stpcpy (dest, argv[i]);
- }
-
- len = prot_size;
- if (grub_file_read (file, (void *) GRUB_LINUX_BZIMAGE_ADDR, len) != len)
- 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);
- loaded = 1;
- }
-
- fail:
-
- if (file)
- grub_file_close (file);
-
- if (grub_errno != GRUB_ERR_NONE)
- {
- grub_dl_unref (my_mod);
- loaded = 0;
- }
-
- 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;
- grub_ssize_t size;
- grub_addr_t addr_min, addr_max;
- grub_addr_t addr;
- grub_efi_uintn_t mmap_size;
- grub_efi_memory_descriptor_t *desc;
- grub_efi_uintn_t desc_size;
- struct linux_kernel_header *lh;
-
- if (argc == 0)
- {
- grub_error (GRUB_ERR_BAD_ARGUMENT, "no module specified");
- goto fail;
- }
-
- if (! loaded)
- {
- 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;
-
- size = grub_file_size (file);
- initrd_pages = (page_align (size) >> 12);
-
- lh = (struct linux_kernel_header *) real_mode_mem;
-
- addr_max = (grub_cpu_to_le32 (lh->initrd_addr_max) << 10);
- if (linux_mem_size != 0 && linux_mem_size < addr_max)
- addr_max = linux_mem_size;
-
- /* Linux 2.3.xx has a bug in the memory range check, so avoid
- the last page.
- Linux 2.2.xx has a bug in the memory range check, which is
- worse than that of Linux 2.3.xx, so avoid the last 64kb. */
- addr_max -= 0x10000;
-
- /* Usually, the compression ratio is about 50%. */
- addr_min = (grub_addr_t) prot_mode_mem + ((prot_mode_pages * 3) << 12)
- + page_align (size);
-
- /* Find the highest address to put the initrd. */
- mmap_size = find_mmap_size ();
- if (grub_efi_get_memory_map (&mmap_size, mmap_buf, 0, &desc_size, 0) <= 0)
- grub_fatal ("cannot get memory map");
-
- addr = 0;
- for (desc = mmap_buf;
- desc < NEXT_MEMORY_DESCRIPTOR (mmap_buf, mmap_size);
- desc = NEXT_MEMORY_DESCRIPTOR (desc, desc_size))
- {
- if (desc->type == GRUB_EFI_CONVENTIONAL_MEMORY
- && desc->num_pages >= initrd_pages)
- {
- grub_efi_physical_address_t physical_end;
-
- physical_end = desc->physical_start + (desc->num_pages << 12);
- if (physical_end > addr_max)
- physical_end = addr_max;
-
- if (physical_end < page_align (size))
- continue;
-
- physical_end -= page_align (size);
-
- if ((physical_end >= addr_min) &&
- (physical_end >= desc->physical_start) &&
- (physical_end > addr))
- addr = physical_end;
- }
- }
-
- if (addr == 0)
- {
- grub_error (GRUB_ERR_OUT_OF_MEMORY, "no free pages available");
- goto fail;
- }
-
- initrd_mem = grub_efi_allocate_pages (addr, initrd_pages);
- if (! initrd_mem)
- grub_fatal ("cannot allocate pages");
-
- if (grub_file_read (file, initrd_mem, size) != size)
- {
- grub_error (GRUB_ERR_FILE_READ_ERROR, "couldn't read file");
- goto fail;
- }
-
- grub_printf (" [Initrd, addr=0x%x, size=0x%x]\n",
- (unsigned) addr, (unsigned) size);
-
- lh->ramdisk_image = addr;
- lh->ramdisk_size = size;
- lh->root_dev = 0x0100; /* XXX */
-
- 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);
-}
projects / thirdparty / grub.git / commitdiff
