diff options
Diffstat (limited to 'grub-core/commands/acpi.c')
| -rw-r--r-- | grub-core/commands/acpi.c | 791 |
1 files changed, 791 insertions, 0 deletions
diff --git a/grub-core/commands/acpi.c b/grub-core/commands/acpi.c new file mode 100644 index 0000000..1215f2a --- /dev/null +++ b/grub-core/commands/acpi.c @@ -0,0 +1,791 @@ +/* acpi.c - modify acpi tables. */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 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/dl.h> +#include <grub/extcmd.h> +#include <grub/file.h> +#include <grub/disk.h> +#include <grub/term.h> +#include <grub/misc.h> +#include <grub/acpi.h> +#include <grub/mm.h> +#include <grub/memory.h> +#include <grub/i18n.h> +#include <grub/lockdown.h> + +#ifdef GRUB_MACHINE_EFI +#include <grub/efi/efi.h> +#include <grub/efi/api.h> +#endif + +#pragma GCC diagnostic ignored "-Wcast-align" + +GRUB_MOD_LICENSE ("GPLv3+"); + +static const struct grub_arg_option options[] = { + {"exclude", 'x', 0, + N_("Don't load host tables specified by comma-separated list."), + 0, ARG_TYPE_STRING}, + {"load-only", 'n', 0, + N_("Load only tables specified by comma-separated list."), 0, ARG_TYPE_STRING}, + {"v1", '1', 0, N_("Export version 1 tables to the OS."), 0, ARG_TYPE_NONE}, + {"v2", '2', 0, N_("Export version 2 and version 3 tables to the OS."), 0, ARG_TYPE_NONE}, + {"oemid", 'o', 0, N_("Set OEMID of RSDP, XSDT and RSDT."), 0, ARG_TYPE_STRING}, + {"oemtable", 't', 0, + N_("Set OEMTABLE ID of RSDP, XSDT and RSDT."), 0, ARG_TYPE_STRING}, + {"oemtablerev", 'r', 0, + N_("Set OEMTABLE revision of RSDP, XSDT and RSDT."), 0, ARG_TYPE_INT}, + {"oemtablecreator", 'c', 0, + N_("Set creator field of RSDP, XSDT and RSDT."), 0, ARG_TYPE_STRING}, + {"oemtablecreatorrev", 'd', 0, + N_("Set creator revision of RSDP, XSDT and RSDT."), 0, ARG_TYPE_INT}, + /* TRANSLATORS: "hangs" here is a noun, not a verb. */ + {"no-ebda", 'e', 0, N_("Don't update EBDA. May fix failures or hangs on some " + "BIOSes but makes it ineffective with OS not receiving RSDP from GRUB."), + 0, ARG_TYPE_NONE}, + {0, 0, 0, 0, 0, 0} +}; + +/* rev1 is 1 if ACPIv1 is to be generated, 0 otherwise. + rev2 contains the revision of ACPIv2+ to generate or 0 if none. */ +static int rev1, rev2; +/* OEMID of RSDP, RSDT and XSDT. */ +static char root_oemid[6]; +/* OEMTABLE of the same tables. */ +static char root_oemtable[8]; +/* OEMREVISION of the same tables. */ +static grub_uint32_t root_oemrev; +/* CreatorID of the same tables. */ +static char root_creator_id[4]; +/* CreatorRevision of the same tables. */ +static grub_uint32_t root_creator_rev; +static struct grub_acpi_rsdp_v10 *rsdpv1_new = 0; +static struct grub_acpi_rsdp_v20 *rsdpv2_new = 0; +static char *playground = 0, *playground_ptr = 0; +static int playground_size = 0; + +/* Linked list of ACPI tables. */ +struct efiemu_acpi_table +{ + void *addr; + grub_size_t size; + struct efiemu_acpi_table *next; +}; +static struct efiemu_acpi_table *acpi_tables = 0; + +/* DSDT isn't in RSDT. So treat it specially. */ +static void *table_dsdt = 0; +/* Pointer to recreated RSDT. */ +static void *rsdt_addr = 0; + +/* Allocation handles for different tables. */ +static grub_size_t dsdt_size = 0; + +/* Address of original FACS. */ +static grub_uint32_t facs_addr = 0; + +struct grub_acpi_rsdp_v20 * +grub_acpi_get_rsdpv2 (void) +{ + if (rsdpv2_new) + return rsdpv2_new; + if (rsdpv1_new) + return 0; + return grub_machine_acpi_get_rsdpv2 (); +} + +struct grub_acpi_rsdp_v10 * +grub_acpi_get_rsdpv1 (void) +{ + if (rsdpv1_new) + return rsdpv1_new; + if (rsdpv2_new) + return 0; + return grub_machine_acpi_get_rsdpv1 (); +} + +#if defined (__i386__) || defined (__x86_64__) + +static inline int +iszero (grub_uint8_t *reg, int size) +{ + int i; + for (i = 0; i < size; i++) + if (reg[i]) + return 0; + return 1; +} + +/* Context for grub_acpi_create_ebda. */ +struct grub_acpi_create_ebda_ctx { + int ebda_len; + grub_uint64_t highestlow; +}; + +/* Helper for grub_acpi_create_ebda. */ +static int +find_hook (grub_uint64_t start, grub_uint64_t size, grub_memory_type_t type, + void *data) +{ + struct grub_acpi_create_ebda_ctx *ctx = data; + grub_uint64_t end = start + size; + if (type != GRUB_MEMORY_AVAILABLE) + return 0; + if (end > 0x100000) + end = 0x100000; + if (end > start + ctx->ebda_len + && ctx->highestlow < ((end - ctx->ebda_len) & (~0xf)) ) + ctx->highestlow = (end - ctx->ebda_len) & (~0xf); + return 0; +} + +grub_err_t +grub_acpi_create_ebda (void) +{ + struct grub_acpi_create_ebda_ctx ctx = { + .highestlow = 0 + }; + int ebda_kb_len = 0; + int mmapregion = 0; + grub_uint8_t *ebda, *v1inebda = 0, *v2inebda = 0; + grub_uint8_t *targetebda, *target; + struct grub_acpi_rsdp_v10 *v1; + struct grub_acpi_rsdp_v20 *v2; + + ebda = (grub_uint8_t *) (grub_addr_t) ((*((grub_uint16_t *)0x40e)) << 4); + grub_dprintf ("acpi", "EBDA @%p\n", ebda); + if (ebda) + ebda_kb_len = *(grub_uint16_t *) ebda; + grub_dprintf ("acpi", "EBDA length 0x%x\n", ebda_kb_len); + if (ebda_kb_len > 16) + ebda_kb_len = 0; + ctx.ebda_len = (ebda_kb_len + 1) << 10; + + /* FIXME: use low-memory mm allocation once it's available. */ + grub_mmap_iterate (find_hook, &ctx); + targetebda = (grub_uint8_t *) (grub_addr_t) ctx.highestlow; + grub_dprintf ("acpi", "creating ebda @%llx\n", + (unsigned long long) ctx.highestlow); + if (! ctx.highestlow) + return grub_error (GRUB_ERR_OUT_OF_MEMORY, + "couldn't find space for the new EBDA"); + + mmapregion = grub_mmap_register ((grub_addr_t) targetebda, ctx.ebda_len, + GRUB_MEMORY_RESERVED); + if (! mmapregion) + return grub_errno; + + /* XXX: EBDA is unstandardized, so this implementation is heuristical. */ + if (ebda_kb_len) + grub_memcpy (targetebda, ebda, 0x400); + else + grub_memset (targetebda, 0, 0x400); + *((grub_uint16_t *) targetebda) = ebda_kb_len + 1; + target = targetebda; + + v1 = grub_acpi_get_rsdpv1 (); + v2 = grub_acpi_get_rsdpv2 (); + if (v2 && v2->length > 40) + v2 = 0; + + /* First try to replace already existing rsdp. */ + if (v2) + { + grub_dprintf ("acpi", "Scanning EBDA for old rsdpv2\n"); + for (; target < targetebda + 0x400 - v2->length; target += 0x10) + if (grub_memcmp (target, GRUB_RSDP_SIGNATURE, GRUB_RSDP_SIGNATURE_SIZE) == 0 + && grub_byte_checksum (target, + sizeof (struct grub_acpi_rsdp_v10)) == 0 + && ((struct grub_acpi_rsdp_v10 *) target)->revision != 0 + && ((struct grub_acpi_rsdp_v20 *) target)->length <= v2->length) + { + grub_memcpy (target, v2, v2->length); + grub_dprintf ("acpi", "Copying rsdpv2 to %p\n", target); + v2inebda = target; + target += v2->length; + target = (grub_uint8_t *) ALIGN_UP((grub_addr_t) target, 16); + v2 = 0; + break; + } + } + + if (v1) + { + grub_dprintf ("acpi", "Scanning EBDA for old rsdpv1\n"); + for (; target < targetebda + 0x400 - sizeof (struct grub_acpi_rsdp_v10); + target += 0x10) + if (grub_memcmp (target, GRUB_RSDP_SIGNATURE, GRUB_RSDP_SIGNATURE_SIZE) == 0 + && grub_byte_checksum (target, + sizeof (struct grub_acpi_rsdp_v10)) == 0) + { + grub_memcpy (target, v1, sizeof (struct grub_acpi_rsdp_v10)); + grub_dprintf ("acpi", "Copying rsdpv1 to %p\n", target); + v1inebda = target; + target += sizeof (struct grub_acpi_rsdp_v10); + target = (grub_uint8_t *) ALIGN_UP((grub_addr_t) target, 16); + v1 = 0; + break; + } + } + + target = targetebda + 0x100; + + /* Try contiguous zeros. */ + if (v2) + { + grub_dprintf ("acpi", "Scanning EBDA for block of zeros\n"); + for (; target < targetebda + 0x400 - v2->length; target += 0x10) + if (iszero (target, v2->length)) + { + grub_dprintf ("acpi", "Copying rsdpv2 to %p\n", target); + grub_memcpy (target, v2, v2->length); + v2inebda = target; + target += v2->length; + target = (grub_uint8_t *) ALIGN_UP((grub_addr_t) target, 16); + v2 = 0; + break; + } + } + + if (v1) + { + grub_dprintf ("acpi", "Scanning EBDA for block of zeros\n"); + for (; target < targetebda + 0x400 - sizeof (struct grub_acpi_rsdp_v10); + target += 0x10) + if (iszero (target, sizeof (struct grub_acpi_rsdp_v10))) + { + grub_dprintf ("acpi", "Copying rsdpv1 to %p\n", target); + grub_memcpy (target, v1, sizeof (struct grub_acpi_rsdp_v10)); + v1inebda = target; + target += sizeof (struct grub_acpi_rsdp_v10); + target = (grub_uint8_t *) ALIGN_UP((grub_addr_t) target, 16); + v1 = 0; + break; + } + } + + if (v1 || v2) + { + grub_mmap_unregister (mmapregion); + return grub_error (GRUB_ERR_OUT_OF_MEMORY, + "couldn't find suitable spot in EBDA"); + } + + /* Remove any other RSDT. */ + for (target = targetebda; + target < targetebda + 0x400 - sizeof (struct grub_acpi_rsdp_v10); + target += 0x10) + if (grub_memcmp (target, GRUB_RSDP_SIGNATURE, GRUB_RSDP_SIGNATURE_SIZE) == 0 + && grub_byte_checksum (target, + sizeof (struct grub_acpi_rsdp_v10)) == 0 + && target != v1inebda && target != v2inebda) + *target = 0; + + grub_dprintf ("acpi", "Switching EBDA\n"); + (*((grub_uint16_t *) 0x40e)) = ((grub_addr_t) targetebda) >> 4; + grub_dprintf ("acpi", "EBDA switched\n"); + + return GRUB_ERR_NONE; +} +#endif + +/* Create tables common to ACPIv1 and ACPIv2+ */ +static void +setup_common_tables (void) +{ + struct efiemu_acpi_table *cur; + struct grub_acpi_table_header *rsdt; + grub_uint32_t *rsdt_entry; + int numoftables; + + /* Treat DSDT. */ + grub_memcpy (playground_ptr, table_dsdt, dsdt_size); + grub_free (table_dsdt); + table_dsdt = playground_ptr; + playground_ptr += dsdt_size; + + /* Treat other tables. */ + for (cur = acpi_tables; cur; cur = cur->next) + { + struct grub_acpi_fadt *fadt; + + grub_memcpy (playground_ptr, cur->addr, cur->size); + grub_free (cur->addr); + cur->addr = playground_ptr; + playground_ptr += cur->size; + + /* If it's FADT correct DSDT and FACS addresses. */ + fadt = (struct grub_acpi_fadt *) cur->addr; + if (grub_memcmp (fadt->hdr.signature, GRUB_ACPI_FADT_SIGNATURE, + sizeof (fadt->hdr.signature)) == 0) + { + fadt->dsdt_addr = (grub_addr_t) table_dsdt; + fadt->facs_addr = facs_addr; + + /* Does a revision 2 exist at all? */ + if (fadt->hdr.revision >= 3) + { + fadt->dsdt_xaddr = (grub_addr_t) table_dsdt; + fadt->facs_xaddr = facs_addr; + } + + /* Recompute checksum. */ + fadt->hdr.checksum = 0; + fadt->hdr.checksum = 1 + ~grub_byte_checksum (fadt, fadt->hdr.length); + } + } + + /* Fill RSDT entries. */ + numoftables = 0; + for (cur = acpi_tables; cur; cur = cur->next) + numoftables++; + + rsdt_addr = rsdt = (struct grub_acpi_table_header *) playground_ptr; + playground_ptr += sizeof (struct grub_acpi_table_header) + sizeof (grub_uint32_t) * numoftables; + + rsdt_entry = (grub_uint32_t *) (rsdt + 1); + + /* Fill RSDT header. */ + grub_memcpy (&(rsdt->signature), "RSDT", 4); + rsdt->length = sizeof (struct grub_acpi_table_header) + sizeof (grub_uint32_t) * numoftables; + rsdt->revision = 1; + grub_memcpy (&(rsdt->oemid), root_oemid, sizeof (rsdt->oemid)); + grub_memcpy (&(rsdt->oemtable), root_oemtable, sizeof (rsdt->oemtable)); + rsdt->oemrev = root_oemrev; + grub_memcpy (&(rsdt->creator_id), root_creator_id, sizeof (rsdt->creator_id)); + rsdt->creator_rev = root_creator_rev; + + for (cur = acpi_tables; cur; cur = cur->next) + *(rsdt_entry++) = (grub_addr_t) cur->addr; + + /* Recompute checksum. */ + rsdt->checksum = 0; + rsdt->checksum = 1 + ~grub_byte_checksum (rsdt, rsdt->length); +} + +/* Regenerate ACPIv1 RSDP */ +static void +setv1table (void) +{ + /* Create RSDP. */ + rsdpv1_new = (struct grub_acpi_rsdp_v10 *) playground_ptr; + playground_ptr += sizeof (struct grub_acpi_rsdp_v10); + grub_memcpy (&(rsdpv1_new->signature), GRUB_RSDP_SIGNATURE, + sizeof (rsdpv1_new->signature)); + grub_memcpy (&(rsdpv1_new->oemid), root_oemid, sizeof (rsdpv1_new->oemid)); + rsdpv1_new->revision = 0; + rsdpv1_new->rsdt_addr = (grub_addr_t) rsdt_addr; + rsdpv1_new->checksum = 0; + rsdpv1_new->checksum = 1 + ~grub_byte_checksum (rsdpv1_new, + sizeof (*rsdpv1_new)); + grub_dprintf ("acpi", "Generated ACPIv1 tables\n"); +} + +static void +setv2table (void) +{ + struct grub_acpi_table_header *xsdt; + struct efiemu_acpi_table *cur; + grub_uint64_t *xsdt_entry; + int numoftables; + + numoftables = 0; + for (cur = acpi_tables; cur; cur = cur->next) + numoftables++; + + /* Create XSDT. */ + xsdt = (struct grub_acpi_table_header *) playground_ptr; + playground_ptr += sizeof (struct grub_acpi_table_header) + sizeof (grub_uint64_t) * numoftables; + + xsdt_entry = (grub_uint64_t *)(xsdt + 1); + for (cur = acpi_tables; cur; cur = cur->next) + *(xsdt_entry++) = (grub_addr_t) cur->addr; + grub_memcpy (&(xsdt->signature), "XSDT", 4); + xsdt->length = sizeof (struct grub_acpi_table_header) + sizeof (grub_uint64_t) * numoftables; + xsdt->revision = 1; + grub_memcpy (&(xsdt->oemid), root_oemid, sizeof (xsdt->oemid)); + grub_memcpy (&(xsdt->oemtable), root_oemtable, sizeof (xsdt->oemtable)); + xsdt->oemrev = root_oemrev; + grub_memcpy (&(xsdt->creator_id), root_creator_id, sizeof (xsdt->creator_id)); + xsdt->creator_rev = root_creator_rev; + xsdt->checksum = 0; + xsdt->checksum = 1 + ~grub_byte_checksum (xsdt, xsdt->length); + + /* Create RSDPv2. */ + rsdpv2_new = (struct grub_acpi_rsdp_v20 *) playground_ptr; + playground_ptr += sizeof (struct grub_acpi_rsdp_v20); + grub_memcpy (&(rsdpv2_new->rsdpv1.signature), GRUB_RSDP_SIGNATURE, + sizeof (rsdpv2_new->rsdpv1.signature)); + grub_memcpy (&(rsdpv2_new->rsdpv1.oemid), root_oemid, + sizeof (rsdpv2_new->rsdpv1.oemid)); + rsdpv2_new->rsdpv1.revision = rev2; + rsdpv2_new->rsdpv1.rsdt_addr = (grub_addr_t) rsdt_addr; + rsdpv2_new->rsdpv1.checksum = 0; + rsdpv2_new->rsdpv1.checksum = 1 + ~grub_byte_checksum + (&(rsdpv2_new->rsdpv1), sizeof (rsdpv2_new->rsdpv1)); + rsdpv2_new->length = sizeof (*rsdpv2_new); + rsdpv2_new->xsdt_addr = (grub_addr_t) xsdt; + rsdpv2_new->checksum = 0; + rsdpv2_new->checksum = 1 + ~grub_byte_checksum (rsdpv2_new, + rsdpv2_new->length); + grub_dprintf ("acpi", "Generated ACPIv2 tables\n"); +} + +static void +free_tables (void) +{ + struct efiemu_acpi_table *cur, *t; + if (table_dsdt) + grub_free (table_dsdt); + for (cur = acpi_tables; cur;) + { + t = cur; + grub_free (cur->addr); + cur = cur->next; + grub_free (t); + } + acpi_tables = 0; + table_dsdt = 0; +} + +static grub_err_t +grub_cmd_acpi (struct grub_extcmd_context *ctxt, int argc, char **args) +{ + struct grub_arg_list *state = ctxt->state; + struct grub_acpi_rsdp_v10 *rsdp; + struct efiemu_acpi_table *cur, *t; + int i, mmapregion; + int numoftables; + + /* Default values if no RSDP is found. */ + rev1 = 1; + rev2 = 3; + + facs_addr = 0; + playground = playground_ptr = 0; + playground_size = 0; + + rsdp = (struct grub_acpi_rsdp_v10 *) grub_machine_acpi_get_rsdpv2 (); + + if (! rsdp) + rsdp = grub_machine_acpi_get_rsdpv1 (); + + grub_dprintf ("acpi", "RSDP @%p\n", rsdp); + + if (rsdp) + { + grub_uint32_t *entry_ptr; + char *exclude = 0; + char *load_only = 0; + char *ptr; + /* RSDT consists of header and an array of 32-bit pointers. */ + struct grub_acpi_table_header *rsdt; + + exclude = state[0].set ? grub_strdup (state[0].arg) : 0; + if (exclude) + { + for (ptr = exclude; *ptr; ptr++) + *ptr = grub_tolower (*ptr); + } + + load_only = state[1].set ? grub_strdup (state[1].arg) : 0; + if (load_only) + { + for (ptr = load_only; *ptr; ptr++) + *ptr = grub_tolower (*ptr); + } + + /* Set revision variables to replicate the same version as host. */ + rev1 = ! rsdp->revision; + rev2 = rsdp->revision; + rsdt = (struct grub_acpi_table_header *) (grub_addr_t) rsdp->rsdt_addr; + /* Load host tables. */ + for (entry_ptr = (grub_uint32_t *) (rsdt + 1); + entry_ptr < (grub_uint32_t *) (((grub_uint8_t *) rsdt) + + rsdt->length); + entry_ptr++) + { + char signature[5]; + struct efiemu_acpi_table *table; + struct grub_acpi_table_header *curtable + = (struct grub_acpi_table_header *) (grub_addr_t) *entry_ptr; + signature[4] = 0; + for (i = 0; i < 4;i++) + signature[i] = grub_tolower (curtable->signature[i]); + + /* If it's FADT it contains addresses of DSDT and FACS. */ + if (grub_strcmp (signature, "facp") == 0) + { + struct grub_acpi_table_header *dsdt; + struct grub_acpi_fadt *fadt = (struct grub_acpi_fadt *) curtable; + + /* Set root header variables to the same values + as FADT by default. */ + grub_memcpy (&root_oemid, &(fadt->hdr.oemid), + sizeof (root_oemid)); + grub_memcpy (&root_oemtable, &(fadt->hdr.oemtable), + sizeof (root_oemtable)); + root_oemrev = fadt->hdr.oemrev; + grub_memcpy (&root_creator_id, &(fadt->hdr.creator_id), + sizeof (root_creator_id)); + root_creator_rev = fadt->hdr.creator_rev; + + /* Load DSDT if not excluded. */ + dsdt = (struct grub_acpi_table_header *) + (grub_addr_t) fadt->dsdt_addr; + if (dsdt && (! exclude || ! grub_strword (exclude, "dsdt")) + && (! load_only || grub_strword (load_only, "dsdt")) + && dsdt->length >= sizeof (*dsdt)) + { + dsdt_size = dsdt->length; + table_dsdt = grub_malloc (dsdt->length); + if (! table_dsdt) + { + free_tables (); + grub_free (exclude); + grub_free (load_only); + return grub_errno; + } + grub_memcpy (table_dsdt, dsdt, dsdt->length); + } + + /* Save FACS address. FACS shouldn't be overridden. */ + facs_addr = fadt->facs_addr; + } + + /* Skip excluded tables. */ + if (exclude && grub_strword (exclude, signature)) + continue; + if (load_only && ! grub_strword (load_only, signature)) + continue; + + /* Sanity check. */ + if (curtable->length < sizeof (*curtable)) + continue; + + table = (struct efiemu_acpi_table *) grub_malloc + (sizeof (struct efiemu_acpi_table)); + if (! table) + { + free_tables (); + grub_free (exclude); + grub_free (load_only); + return grub_errno; + } + table->size = curtable->length; + table->addr = grub_malloc (table->size); + playground_size += table->size; + if (! table->addr) + { + free_tables (); + grub_free (exclude); + grub_free (load_only); + grub_free (table); + return grub_errno; + } + table->next = acpi_tables; + acpi_tables = table; + grub_memcpy (table->addr, curtable, table->size); + } + grub_free (exclude); + grub_free (load_only); + } + + /* Does user specify versions to generate? */ + if (state[2].set || state[3].set) + { + rev1 = state[2].set; + if (state[3].set) + rev2 = rev2 ? : 2; + else + rev2 = 0; + } + + /* Does user override root header information? */ + if (state[4].set) + grub_strncpy (root_oemid, state[4].arg, sizeof (root_oemid)); + if (state[5].set) + grub_strncpy (root_oemtable, state[5].arg, sizeof (root_oemtable)); + if (state[6].set) + root_oemrev = grub_strtoul (state[6].arg, 0, 0); + if (state[7].set) + grub_strncpy (root_creator_id, state[7].arg, sizeof (root_creator_id)); + if (state[8].set) + root_creator_rev = grub_strtoul (state[8].arg, 0, 0); + + /* Load user tables */ + for (i = 0; i < argc; i++) + { + grub_file_t file; + grub_size_t size; + char *buf; + + file = grub_file_open (args[i], GRUB_FILE_TYPE_ACPI_TABLE); + if (! file) + { + free_tables (); + return grub_errno; + } + + size = grub_file_size (file); + if (size < sizeof (struct grub_acpi_table_header)) + { + grub_file_close (file); + free_tables (); + return grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"), + args[i]); + } + + buf = (char *) grub_malloc (size); + if (! buf) + { + grub_file_close (file); + free_tables (); + return grub_errno; + } + + if (grub_file_read (file, buf, size) != (int) size) + { + grub_file_close (file); + free_tables (); + if (!grub_errno) + grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"), + args[i]); + return grub_errno; + } + grub_file_close (file); + + if (grub_memcmp (((struct grub_acpi_table_header *) buf)->signature, + "DSDT", 4) == 0) + { + grub_free (table_dsdt); + table_dsdt = buf; + dsdt_size = size; + } + else + { + struct efiemu_acpi_table *table; + table = (struct efiemu_acpi_table *) grub_malloc + (sizeof (struct efiemu_acpi_table)); + if (! table) + { + free_tables (); + return grub_errno; + } + + table->size = size; + table->addr = buf; + playground_size += table->size; + + table->next = acpi_tables; + acpi_tables = table; + } + } + + numoftables = 0; + for (cur = acpi_tables; cur; cur = cur->next) + numoftables++; + + /* DSDT. */ + playground_size += dsdt_size; + /* RSDT. */ + playground_size += sizeof (struct grub_acpi_table_header) + sizeof (grub_uint32_t) * numoftables; + /* RSDPv1. */ + playground_size += sizeof (struct grub_acpi_rsdp_v10); + /* XSDT. */ + playground_size += sizeof (struct grub_acpi_table_header) + sizeof (grub_uint64_t) * numoftables; + /* RSDPv2. */ + playground_size += sizeof (struct grub_acpi_rsdp_v20); + + playground = playground_ptr + = grub_mmap_malign_and_register (1, playground_size, &mmapregion, + GRUB_MEMORY_ACPI, 0); + + if (! playground) + { + free_tables (); + return grub_error (GRUB_ERR_OUT_OF_MEMORY, + "couldn't allocate space for ACPI tables"); + } + + setup_common_tables (); + + /* Request space for RSDPv1. */ + if (rev1) + setv1table (); + + /* Request space for RSDPv2+ and XSDT. */ + if (rev2) + setv2table (); + + for (cur = acpi_tables; cur;) + { + t = cur; + cur = cur->next; + grub_free (t); + } + acpi_tables = 0; + +#if defined (__i386__) || defined (__x86_64__) + if (! state[9].set) + { + grub_err_t err; + err = grub_acpi_create_ebda (); + if (err) + { + rsdpv1_new = 0; + rsdpv2_new = 0; + grub_mmap_free_and_unregister (mmapregion); + return err; + } + } +#endif + +#ifdef GRUB_MACHINE_EFI + { + struct grub_efi_guid acpi = GRUB_EFI_ACPI_TABLE_GUID; + struct grub_efi_guid acpi20 = GRUB_EFI_ACPI_20_TABLE_GUID; + + efi_call_2 (grub_efi_system_table->boot_services->install_configuration_table, + &acpi20, grub_acpi_get_rsdpv2 ()); + efi_call_2 (grub_efi_system_table->boot_services->install_configuration_table, + &acpi, grub_acpi_get_rsdpv1 ()); + } +#endif + + return GRUB_ERR_NONE; +} + +static grub_extcmd_t cmd; + +GRUB_MOD_INIT(acpi) +{ + cmd = grub_register_extcmd_lockdown ("acpi", grub_cmd_acpi, 0, + N_("[-1|-2] [--exclude=TABLE1,TABLE2|" + "--load-only=TABLE1,TABLE2] FILE1" + " [FILE2] [...]"), + N_("Load host ACPI tables and tables " + "specified by arguments."), + options); +} + +GRUB_MOD_FINI(acpi) +{ + grub_unregister_extcmd (cmd); +} |