463 lines
10 KiB
C
463 lines
10 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2009,2010 Free Software Foundation, Inc.
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*
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* GRUB 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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* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/kernel.h>
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#include <grub/misc.h>
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#include <grub/env.h>
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#include <grub/time.h>
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#include <grub/types.h>
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#include <grub/misc.h>
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#include <grub/mm.h>
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#include <grub/time.h>
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#include <grub/machine/kernel.h>
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#include <grub/machine/memory.h>
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#include <grub/arc/console.h>
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#include <grub/cpu/memory.h>
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#include <grub/cpu/time.h>
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#include <grub/memory.h>
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#include <grub/term.h>
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#include <grub/arc/arc.h>
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#include <grub/offsets.h>
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#include <grub/i18n.h>
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#include <grub/disk.h>
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#include <grub/partition.h>
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const char *type_names[] = {
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#ifdef GRUB_CPU_WORDS_BIGENDIAN
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NULL,
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#endif
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
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"eisa", "tc", "scsi", "dti", "multi", "disk", "tape", "cdrom", "worm",
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"serial", "net", "video", "par", "point", "key", "audio", "other",
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"rdisk", "fdisk", "tape", "modem", "monitor", "print", "pointer",
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"keyboard", "term",
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#ifndef GRUB_CPU_WORDS_BIGENDIAN
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"other",
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#endif
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"line", "network", NULL
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};
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static int
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iterate_rec (const char *prefix, const struct grub_arc_component *parent,
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grub_arc_iterate_devs_hook_t hook, void *hook_data,
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int alt_names)
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{
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const struct grub_arc_component *comp;
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FOR_ARC_CHILDREN(comp, parent)
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{
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char *name;
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const char *cname = NULL;
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if (comp->type < ARRAY_SIZE (type_names))
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cname = type_names[comp->type];
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if (!cname)
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cname = "unknown";
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if (alt_names)
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name = grub_xasprintf ("%s/%s%lu", prefix, cname, comp->key);
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else
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name = grub_xasprintf ("%s%s(%lu)", prefix, cname, comp->key);
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if (!name)
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return 1;
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if (hook (name, comp, hook_data))
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{
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grub_free (name);
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return 1;
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}
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if (iterate_rec ((parent ? name : prefix), comp, hook, hook_data,
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alt_names))
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{
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grub_free (name);
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return 1;
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}
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grub_free (name);
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}
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return 0;
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}
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int
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grub_arc_iterate_devs (grub_arc_iterate_devs_hook_t hook, void *hook_data,
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int alt_names)
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{
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return iterate_rec ((alt_names ? "arc" : ""), NULL, hook, hook_data,
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alt_names);
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}
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grub_err_t
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grub_machine_mmap_iterate (grub_memory_hook_t hook, void *hook_data)
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{
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struct grub_arc_memory_descriptor *cur = NULL;
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while (1)
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{
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grub_memory_type_t type;
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cur = GRUB_ARC_FIRMWARE_VECTOR->getmemorydescriptor (cur);
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if (!cur)
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return GRUB_ERR_NONE;
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switch (cur->type)
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{
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case GRUB_ARC_MEMORY_EXCEPTION_BLOCK:
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case GRUB_ARC_MEMORY_SYSTEM_PARAMETER_BLOCK:
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case GRUB_ARC_MEMORY_FW_PERMANENT:
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default:
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type = GRUB_MEMORY_RESERVED;
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break;
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case GRUB_ARC_MEMORY_FW_TEMPORARY:
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case GRUB_ARC_MEMORY_FREE:
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case GRUB_ARC_MEMORY_LOADED:
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case GRUB_ARC_MEMORY_FREE_CONTIGUOUS:
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type = GRUB_MEMORY_AVAILABLE;
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break;
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case GRUB_ARC_MEMORY_BADRAM:
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type = GRUB_MEMORY_BADRAM;
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break;
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}
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if (hook (((grub_uint64_t) cur->start_page) << 12,
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((grub_uint64_t) cur->num_pages) << 12, type, hook_data))
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return GRUB_ERR_NONE;
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}
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}
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char *
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grub_arc_alt_name_to_norm (const char *name, const char *suffix)
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{
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char *optr;
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const char *iptr;
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char * ret = grub_malloc (2 * grub_strlen (name) + grub_strlen (suffix));
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int state = 0;
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if (!ret)
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return NULL;
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optr = ret;
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for (iptr = name + 4; *iptr; iptr++)
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if (state == 0)
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{
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if (!grub_isdigit (*iptr))
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*optr++ = *iptr;
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else
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{
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*optr++ = '(';
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*optr++ = *iptr;
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state = 1;
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}
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}
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else
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{
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if (grub_isdigit (*iptr))
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*optr++ = *iptr;
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else
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{
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*optr++ = ')';
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state = 0;
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}
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}
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if (state)
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*optr++ = ')';
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grub_strcpy (optr, suffix);
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return ret;
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}
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static char *
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norm_name_to_alt (const char *name)
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{
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char *optr;
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const char *iptr;
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int state = 0;
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char * ret = grub_malloc (grub_strlen (name) + sizeof ("arc/"));
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if (!ret)
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return NULL;
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optr = grub_stpcpy (ret, "arc/");
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for (iptr = name; *iptr; iptr++)
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{
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if (state == 3)
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{
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*optr++ = '/';
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state = 0;
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}
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if (*iptr == '(')
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{
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state = 1;
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continue;
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}
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if (*iptr == ')')
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{
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if (state == 1)
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*optr++ = '0';
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state = 3;
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continue;
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}
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*optr++ = *iptr;
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if (state == 1)
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state = 2;
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}
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*optr = '\0';
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return ret;
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}
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extern grub_uint32_t grub_total_modules_size __attribute__ ((section(".text")));
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grub_addr_t grub_modbase;
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extern char _end[];
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static char boot_location[256];
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void
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grub_machine_init (void)
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{
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struct grub_arc_memory_descriptor *cur = NULL;
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grub_addr_t modend;
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grub_memcpy (boot_location,
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(char *) (GRUB_DECOMPRESSOR_LINK_ADDR - 256), 256);
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grub_modbase = ALIGN_UP ((grub_addr_t) _end, GRUB_KERNEL_MACHINE_MOD_ALIGN);
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modend = grub_modbase + grub_total_modules_size;
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grub_console_init_early ();
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/* FIXME: measure this. */
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grub_arch_cpuclock = 150000000;
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grub_install_get_time_ms (grub_rtc_get_time_ms);
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while (1)
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{
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grub_uint64_t start, end;
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cur = GRUB_ARC_FIRMWARE_VECTOR->getmemorydescriptor (cur);
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if (!cur)
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break;
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if (cur->type != GRUB_ARC_MEMORY_FREE
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&& cur->type != GRUB_ARC_MEMORY_LOADED
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&& cur->type != GRUB_ARC_MEMORY_FREE_CONTIGUOUS)
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continue;
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start = ((grub_uint64_t) cur->start_page) << 12;
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end = ((grub_uint64_t) cur->num_pages) << 12;
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end += start;
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if ((grub_uint64_t) start < (modend & 0x1fffffff))
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start = (modend & 0x1fffffff);
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if ((grub_uint64_t) end > 0x20000000)
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end = 0x20000000;
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if (end > start)
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grub_mm_init_region ((void *) (grub_addr_t) (start | 0x80000000),
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end - start);
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}
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grub_console_init_lately ();
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grub_arcdisk_init ();
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}
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void
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grub_machine_fini (int flags __attribute__ ((unused)))
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{
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}
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void
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grub_halt (void)
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{
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GRUB_ARC_FIRMWARE_VECTOR->powerdown ();
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grub_millisleep (1500);
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grub_puts_ (N_("Shutdown failed"));
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grub_refresh ();
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while (1);
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}
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void
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grub_exit (void)
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{
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GRUB_ARC_FIRMWARE_VECTOR->exit ();
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grub_millisleep (1500);
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grub_puts_ (N_("Exit failed"));
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grub_refresh ();
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while (1);
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}
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static char *
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get_part (char *dev)
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{
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char *ptr;
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if (!*dev)
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return 0;
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ptr = dev + grub_strlen (dev) - 1;
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if (ptr == dev || *ptr != ')')
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return 0;
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ptr--;
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while (grub_isdigit (*ptr) && ptr > dev)
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ptr--;
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if (*ptr != '(' || ptr == dev)
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return 0;
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ptr--;
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if (ptr - dev < (int) sizeof ("partition") - 2)
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return 0;
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ptr -= sizeof ("partition") - 2;
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if (grub_memcmp (ptr, "partition", sizeof ("partition") - 1) != 0)
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return 0;
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return ptr;
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}
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static grub_disk_addr_t
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get_partition_offset (char *part, grub_disk_addr_t *en)
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{
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grub_arc_fileno_t handle;
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grub_disk_addr_t ret = -1;
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struct grub_arc_fileinfo info;
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grub_arc_err_t r;
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if (GRUB_ARC_FIRMWARE_VECTOR->open (part, GRUB_ARC_FILE_ACCESS_OPEN_RO,
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&handle))
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return -1;
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r = GRUB_ARC_FIRMWARE_VECTOR->getfileinformation (handle, &info);
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if (!r)
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{
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ret = (info.start >> 9);
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*en = (info.end >> 9);
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}
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GRUB_ARC_FIRMWARE_VECTOR->close (handle);
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return ret;
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}
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struct get_device_name_ctx
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{
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char *partition_name;
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grub_disk_addr_t poff, pend;
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};
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static int
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get_device_name_iter (grub_disk_t disk __attribute__ ((unused)),
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const grub_partition_t part, void *data)
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{
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struct get_device_name_ctx *ctx = data;
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if (grub_partition_get_start (part) == ctx->poff
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&& grub_partition_get_len (part) == ctx->pend)
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{
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ctx->partition_name = grub_partition_get_name (part);
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return 1;
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}
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return 0;
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}
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void
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grub_machine_get_bootlocation (char **device, char **path)
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{
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char *loaddev = boot_location;
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char *pptr, *partptr;
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char *dname;
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grub_disk_addr_t poff = -1, pend;
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struct get_device_name_ctx ctx;
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grub_disk_t parent = 0;
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unsigned i;
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for (i = 0; i < ARRAY_SIZE (type_names); i++)
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if (type_names[i]
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&& grub_memcmp (loaddev, type_names[i], grub_strlen (type_names[i])) == 0
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&& loaddev[grub_strlen (type_names[i])] == '(')
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break;
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if (i == ARRAY_SIZE (type_names))
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pptr = loaddev;
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else
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for (pptr = loaddev; *pptr && *pptr != '/' && *pptr != '\\'; pptr++);
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if (*pptr)
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{
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char *iptr, *optr;
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char sep = *pptr;
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*path = grub_malloc (grub_strlen (pptr) + 1);
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if (!*path)
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return;
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for (iptr = pptr, optr = *path; *iptr; iptr++, optr++)
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if (*iptr == sep)
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*optr = '/';
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else
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*optr = *iptr;
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*optr = '\0';
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*path = grub_strdup (pptr);
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*pptr = '\0';
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}
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if (*loaddev == '\0')
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{
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const char *syspart = 0;
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if (GRUB_ARC_SYSTEM_PARAMETER_BLOCK->firmware_vector_length
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>= ((char *) (&GRUB_ARC_FIRMWARE_VECTOR->getenvironmentvariable + 1)
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- (char *) GRUB_ARC_FIRMWARE_VECTOR)
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&& GRUB_ARC_FIRMWARE_VECTOR->getenvironmentvariable)
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syspart = GRUB_ARC_FIRMWARE_VECTOR->getenvironmentvariable ("SystemPartition");
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if (!syspart)
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return;
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loaddev = grub_strdup (syspart);
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}
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partptr = get_part (loaddev);
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if (partptr)
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{
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poff = get_partition_offset (loaddev, &pend);
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*partptr = '\0';
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}
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dname = norm_name_to_alt (loaddev);
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if (poff == (grub_addr_t) -1)
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{
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*device = dname;
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if (loaddev != boot_location)
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grub_free (loaddev);
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return;
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}
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parent = grub_disk_open (dname);
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if (!parent)
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{
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*device = dname;
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if (loaddev != boot_location)
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grub_free (loaddev);
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return;
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}
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if (poff == 0
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&& pend == grub_disk_get_size (parent))
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{
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grub_disk_close (parent);
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*device = dname;
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if (loaddev != boot_location)
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grub_free (loaddev);
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return;
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}
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ctx.partition_name = NULL;
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ctx.poff = poff;
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ctx.pend = pend;
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grub_partition_iterate (parent, get_device_name_iter, &ctx);
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grub_disk_close (parent);
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if (! ctx.partition_name)
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{
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*device = dname;
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if (loaddev != boot_location)
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grub_free (loaddev);
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return;
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}
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*device = grub_xasprintf ("%s,%s", dname,
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ctx.partition_name);
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grub_free (ctx.partition_name);
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grub_free (dname);
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if (loaddev != boot_location)
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grub_free (loaddev);
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}
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