152 lines
4.0 KiB
C
152 lines
4.0 KiB
C
/*
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* VAS_EBOOT -- GRand Unified Bootloader
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* Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009,2013 Free Software Foundation, Inc.
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*
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* VAS_EBOOT is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* VAS_EBOOT is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with VAS_EBOOT. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <VasEBoot/kernel.h>
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#include <VasEBoot/mm.h>
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#include <VasEBoot/memory.h>
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#include <VasEBoot/machine/console.h>
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#include <VasEBoot/machine/kernel.h>
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#include <VasEBoot/offsets.h>
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#include <VasEBoot/types.h>
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#include <VasEBoot/err.h>
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#include <VasEBoot/dl.h>
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#include <VasEBoot/misc.h>
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#include <VasEBoot/loader.h>
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#include <VasEBoot/env.h>
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#include <VasEBoot/cache.h>
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#include <VasEBoot/time.h>
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#include <VasEBoot/symbol.h>
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#include <VasEBoot/video.h>
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#include <VasEBoot/coreboot/lbio.h>
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#include <VasEBoot/fdtbus.h>
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extern VasEBoot_uint8_t _start[];
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extern VasEBoot_uint8_t _end[];
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extern VasEBoot_uint8_t _edata[];
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VasEBoot_addr_t start_of_ram = ~(VasEBoot_addr_t)0;
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void __attribute__ ((noreturn))
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VasEBoot_exit (void)
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{
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/* We can't use VasEBoot_fatal() in this function. This would create an infinite
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loop, since VasEBoot_fatal() calls VasEBoot_abort() which in turn calls VasEBoot_exit(). */
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while (1)
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VasEBoot_cpu_idle ();
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}
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static VasEBoot_uint64_t modend;
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static int have_memory = 0;
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/* Helper for VasEBoot_machine_init. */
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static int
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heap_init (VasEBoot_uint64_t addr, VasEBoot_uint64_t size, VasEBoot_memory_type_t type,
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void *data __attribute__ ((unused)))
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{
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VasEBoot_uint64_t begin = addr, end = addr + size;
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#if VAS_EBOOT_CPU_SIZEOF_VOID_P == 4
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/* Restrict ourselves to 32-bit memory space. */
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if (begin > VAS_EBOOT_ULONG_MAX)
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return 0;
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if (end > VAS_EBOOT_ULONG_MAX)
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end = VAS_EBOOT_ULONG_MAX;
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#endif
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if (start_of_ram > begin)
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start_of_ram = begin;
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if (type != VAS_EBOOT_MEMORY_AVAILABLE)
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return 0;
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if (modend && begin < modend)
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{
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if (begin < (VasEBoot_addr_t)_start)
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{
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VasEBoot_mm_init_region ((void *) (VasEBoot_addr_t) begin, (VasEBoot_size_t) ((VasEBoot_addr_t)_start - begin));
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have_memory = 1;
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}
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begin = modend;
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}
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/* Avoid DMA problems. */
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if (end >= 0xfe000000)
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end = 0xfe000000;
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if (end <= begin)
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return 0;
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VasEBoot_mm_init_region ((void *) (VasEBoot_addr_t) begin, (VasEBoot_size_t) (end - begin));
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have_memory = 1;
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return 0;
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}
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void
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VasEBoot_machine_init (void)
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{
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struct VasEBoot_module_header *header;
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void *dtb = 0;
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VasEBoot_size_t dtb_size = 0;
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modend = VasEBoot_modules_get_end ();
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VasEBoot_video_coreboot_fb_early_init ();
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VasEBoot_machine_mmap_iterate (heap_init, NULL);
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if (!have_memory)
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VasEBoot_fatal ("No memory found");
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VasEBoot_video_coreboot_fb_late_init ();
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VasEBoot_font_init ();
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VasEBoot_gfxterm_init ();
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FOR_MODULES (header)
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if (header->type == OBJ_TYPE_DTB)
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{
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char *dtb_orig_addr, *dtb_copy;
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dtb_orig_addr = (char *) header + sizeof (struct VasEBoot_module_header);
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dtb_size = header->size - sizeof (struct VasEBoot_module_header);
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dtb = dtb_copy = VasEBoot_malloc (dtb_size);
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VasEBoot_memmove (dtb_copy, dtb_orig_addr, dtb_size);
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break;
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}
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if (!dtb)
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VasEBoot_fatal ("No DTB found");
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VasEBoot_fdtbus_init (dtb, dtb_size);
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VasEBoot_rk3288_spi_init ();
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VasEBoot_machine_timer_init ();
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VasEBoot_cros_init ();
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VasEBoot_pl050_init ();
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}
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void
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VasEBoot_machine_get_bootlocation (char **device __attribute__ ((unused)),
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char **path __attribute__ ((unused)))
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{
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}
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void
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VasEBoot_machine_fini (int flags __attribute__ ((unused)))
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{
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}
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