| /* |
| * GRUB -- GRand Unified Bootloader |
| * Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009,2013 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/kernel.h> |
| #include <grub/mm.h> |
| #include <grub/memory.h> |
| #include <grub/machine/console.h> |
| #include <grub/machine/kernel.h> |
| #include <grub/offsets.h> |
| #include <grub/types.h> |
| #include <grub/err.h> |
| #include <grub/dl.h> |
| #include <grub/misc.h> |
| #include <grub/loader.h> |
| #include <grub/env.h> |
| #include <grub/cache.h> |
| #include <grub/time.h> |
| #include <grub/symbol.h> |
| #include <grub/video.h> |
| #include <grub/coreboot/lbio.h> |
| #include <grub/fdtbus.h> |
| |
| extern grub_uint8_t _start[]; |
| extern grub_uint8_t _end[]; |
| extern grub_uint8_t _edata[]; |
| grub_addr_t start_of_ram = ~(grub_addr_t)0; |
| |
| void __attribute__ ((noreturn)) |
| grub_exit (void) |
| { |
| /* We can't use grub_fatal() in this function. This would create an infinite |
| loop, since grub_fatal() calls grub_abort() which in turn calls grub_exit(). */ |
| while (1) |
| grub_cpu_idle (); |
| } |
| |
| static grub_uint64_t modend; |
| static int have_memory = 0; |
| |
| /* Helper for grub_machine_init. */ |
| static int |
| heap_init (grub_uint64_t addr, grub_uint64_t size, grub_memory_type_t type, |
| void *data __attribute__ ((unused))) |
| { |
| grub_uint64_t begin = addr, end = addr + size; |
| |
| #if GRUB_CPU_SIZEOF_VOID_P == 4 |
| /* Restrict ourselves to 32-bit memory space. */ |
| if (begin > GRUB_ULONG_MAX) |
| return 0; |
| if (end > GRUB_ULONG_MAX) |
| end = GRUB_ULONG_MAX; |
| #endif |
| |
| if (start_of_ram > begin) |
| start_of_ram = begin; |
| |
| if (type != GRUB_MEMORY_AVAILABLE) |
| return 0; |
| |
| if (modend && begin < modend) |
| { |
| if (begin < (grub_addr_t)_start) |
| { |
| grub_mm_init_region ((void *) (grub_addr_t) begin, (grub_size_t) ((grub_addr_t)_start - begin)); |
| have_memory = 1; |
| } |
| begin = modend; |
| } |
| |
| /* Avoid DMA problems. */ |
| if (end >= 0xfe000000) |
| end = 0xfe000000; |
| |
| if (end <= begin) |
| return 0; |
| |
| grub_mm_init_region ((void *) (grub_addr_t) begin, (grub_size_t) (end - begin)); |
| |
| have_memory = 1; |
| |
| return 0; |
| } |
| |
| void |
| grub_machine_init (void) |
| { |
| struct grub_module_header *header; |
| void *dtb = 0; |
| grub_size_t dtb_size = 0; |
| |
| modend = grub_modules_get_end (); |
| |
| grub_video_coreboot_fb_early_init (); |
| |
| grub_machine_mmap_iterate (heap_init, NULL); |
| if (!have_memory) |
| grub_fatal ("No memory found"); |
| |
| grub_video_coreboot_fb_late_init (); |
| |
| grub_font_init (); |
| grub_gfxterm_init (); |
| |
| FOR_MODULES (header) |
| if (header->type == OBJ_TYPE_DTB) |
| { |
| char *dtb_orig_addr, *dtb_copy; |
| dtb_orig_addr = (char *) header + sizeof (struct grub_module_header); |
| |
| dtb_size = header->size - sizeof (struct grub_module_header); |
| dtb = dtb_copy = grub_malloc (dtb_size); |
| grub_memmove (dtb_copy, dtb_orig_addr, dtb_size); |
| break; |
| } |
| if (!dtb) |
| grub_fatal ("No DTB found"); |
| grub_fdtbus_init (dtb, dtb_size); |
| |
| grub_rk3288_spi_init (); |
| |
| grub_machine_timer_init (); |
| grub_cros_init (); |
| grub_pl050_init (); |
| } |
| |
| void |
| grub_machine_get_bootlocation (char **device __attribute__ ((unused)), |
| char **path __attribute__ ((unused))) |
| { |
| } |
| |
| void |
| grub_machine_fini (int flags __attribute__ ((unused))) |
| { |
| } |