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-rw-r--r--grub-core/commands/acpihalt.c332
1 files changed, 332 insertions, 0 deletions
diff --git a/grub-core/commands/acpihalt.c b/grub-core/commands/acpihalt.c
new file mode 100644
index 0000000..9a4cda5
--- /dev/null
+++ b/grub-core/commands/acpihalt.c
@@ -0,0 +1,332 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2010 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/>.
+ */
+
+#ifdef GRUB_DSDT_TEST
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+
+#define grub_dprintf(cond, args...) printf ( args )
+#define grub_printf printf
+typedef uint64_t grub_uint64_t;
+typedef uint32_t grub_uint32_t;
+typedef uint16_t grub_uint16_t;
+typedef uint8_t grub_uint8_t;
+
+#endif
+
+#include <grub/acpi.h>
+
+#ifndef GRUB_DSDT_TEST
+#include <grub/misc.h>
+#include <grub/time.h>
+#include <grub/cpu/io.h>
+#endif
+
+static inline grub_uint32_t
+decode_length (const grub_uint8_t *ptr, int *numlen)
+{
+ int num_bytes, i;
+ grub_uint32_t ret;
+ if (*ptr < 64)
+ {
+ if (numlen)
+ *numlen = 1;
+ return *ptr;
+ }
+ num_bytes = *ptr >> 6;
+ if (numlen)
+ *numlen = num_bytes + 1;
+ ret = *ptr & 0xf;
+ ptr++;
+ for (i = 0; i < num_bytes; i++)
+ {
+ ret |= *ptr << (8 * i + 4);
+ ptr++;
+ }
+ return ret;
+}
+
+static inline grub_uint32_t
+skip_name_string (const grub_uint8_t *ptr, const grub_uint8_t *end)
+{
+ const grub_uint8_t *ptr0 = ptr;
+
+ while (ptr < end && (*ptr == '^' || *ptr == '\\'))
+ ptr++;
+ switch (*ptr)
+ {
+ case '.':
+ ptr++;
+ ptr += 8;
+ break;
+ case '/':
+ ptr++;
+ ptr += 1 + (*ptr) * 4;
+ break;
+ case 0:
+ ptr++;
+ break;
+ default:
+ ptr += 4;
+ break;
+ }
+ return ptr - ptr0;
+}
+
+static inline grub_uint32_t
+skip_data_ref_object (const grub_uint8_t *ptr, const grub_uint8_t *end)
+{
+ grub_dprintf ("acpi", "data type = 0x%x\n", *ptr);
+ switch (*ptr)
+ {
+ case GRUB_ACPI_OPCODE_PACKAGE:
+ return 1 + decode_length (ptr + 1, 0);
+ case GRUB_ACPI_OPCODE_ZERO:
+ case GRUB_ACPI_OPCODE_ONES:
+ case GRUB_ACPI_OPCODE_ONE:
+ return 1;
+ case GRUB_ACPI_OPCODE_BYTE_CONST:
+ return 2;
+ case GRUB_ACPI_OPCODE_WORD_CONST:
+ return 3;
+ case GRUB_ACPI_OPCODE_DWORD_CONST:
+ return 5;
+ default:
+ if (*ptr == '^' || *ptr == '\\' || *ptr == '_'
+ || (*ptr >= 'A' && *ptr <= 'Z'))
+ return skip_name_string (ptr, end);
+ grub_printf ("Unknown opcode 0x%x\n", *ptr);
+ return 0;
+ }
+}
+
+static inline grub_uint32_t
+skip_ext_op (const grub_uint8_t *ptr, const grub_uint8_t *end)
+{
+ const grub_uint8_t *ptr0 = ptr;
+ int add;
+ grub_dprintf ("acpi", "Extended opcode: 0x%x\n", *ptr);
+ switch (*ptr)
+ {
+ case GRUB_ACPI_EXTOPCODE_MUTEX:
+ ptr++;
+ ptr += skip_name_string (ptr, end);
+ ptr++;
+ break;
+ case GRUB_ACPI_EXTOPCODE_OPERATION_REGION:
+ ptr++;
+ ptr += skip_name_string (ptr, end);
+ ptr++;
+ ptr += add = skip_data_ref_object (ptr, end);
+ if (!add)
+ return 0;
+ ptr += add = skip_data_ref_object (ptr, end);
+ if (!add)
+ return 0;
+ break;
+ case GRUB_ACPI_EXTOPCODE_FIELD_OP:
+ case GRUB_ACPI_EXTOPCODE_INDEX_FIELD_OP:
+ ptr++;
+ ptr += decode_length (ptr, 0);
+ break;
+ default:
+ grub_printf ("Unexpected extended opcode: 0x%x\n", *ptr);
+ return 0;
+ }
+ return ptr - ptr0;
+}
+
+static int
+get_sleep_type (grub_uint8_t *table, grub_uint8_t *end)
+{
+ grub_uint8_t *ptr, *prev = table;
+ int sleep_type = -1;
+
+ ptr = table + sizeof (struct grub_acpi_table_header);
+ while (ptr < end && prev < ptr)
+ {
+ int add;
+ prev = ptr;
+ grub_dprintf ("acpi", "Opcode 0x%x\n", *ptr);
+ grub_dprintf ("acpi", "Tell %x\n", (unsigned) (ptr - table));
+ switch (*ptr)
+ {
+ case GRUB_ACPI_OPCODE_EXTOP:
+ ptr++;
+ ptr += add = skip_ext_op (ptr, end);
+ if (!add)
+ return -1;
+ break;
+ case GRUB_ACPI_OPCODE_NAME:
+ ptr++;
+ if (memcmp (ptr, "_S5_", 4) == 0 || memcmp (ptr, "\\_S5_", 4) == 0)
+ {
+ int ll;
+ grub_uint8_t *ptr2 = ptr;
+ grub_dprintf ("acpi", "S5 found\n");
+ ptr2 += skip_name_string (ptr, end);
+ if (*ptr2 != 0x12)
+ {
+ grub_printf ("Unknown opcode in _S5: 0x%x\n", *ptr2);
+ return -1;
+ }
+ ptr2++;
+ decode_length (ptr2, &ll);
+ ptr2 += ll;
+ ptr2++;
+ switch (*ptr2)
+ {
+ case GRUB_ACPI_OPCODE_ZERO:
+ sleep_type = 0;
+ break;
+ case GRUB_ACPI_OPCODE_ONE:
+ sleep_type = 1;
+ break;
+ case GRUB_ACPI_OPCODE_BYTE_CONST:
+ sleep_type = ptr2[1];
+ break;
+ default:
+ grub_printf ("Unknown data type in _S5: 0x%x\n", *ptr2);
+ return -1;
+ }
+ }
+ ptr += add = skip_name_string (ptr, end);
+ if (!add)
+ return -1;
+ ptr += add = skip_data_ref_object (ptr, end);
+ if (!add)
+ return -1;
+ break;
+ case GRUB_ACPI_OPCODE_SCOPE:
+ case GRUB_ACPI_OPCODE_IF:
+ case GRUB_ACPI_OPCODE_METHOD:
+ {
+ ptr++;
+ ptr += decode_length (ptr, 0);
+ break;
+ }
+ }
+ }
+
+ grub_dprintf ("acpi", "TYP = %d\n", sleep_type);
+ return sleep_type;
+}
+
+#ifdef GRUB_DSDT_TEST
+int
+main (int argc, char **argv)
+{
+ FILE *f;
+ size_t len;
+ unsigned char *buf;
+ if (argc < 2)
+ printf ("Usage: %s FILE\n", argv[0]);
+ f = fopen (argv[1], "rb");
+ if (!f)
+ {
+ printf ("Couldn't open file\n");
+ return 1;
+ }
+ fseek (f, 0, SEEK_END);
+ len = ftell (f);
+ fseek (f, 0, SEEK_SET);
+ buf = malloc (len);
+ if (!buf)
+ {
+ printf ("Couldn't malloc buffer\n");
+ fclose (f);
+ return 2;
+ }
+ if (fread (buf, 1, len, f) != len)
+ {
+ printf ("Read failed\n");
+ free (buf);
+ fclose (f);
+ return 2;
+ }
+
+ printf ("Sleep type = %d\n", get_sleep_type (buf, buf + len));
+ free (buf);
+ fclose (f);
+ return 0;
+}
+
+#else
+
+void
+grub_acpi_halt (void)
+{
+ struct grub_acpi_rsdp_v20 *rsdp2;
+ struct grub_acpi_rsdp_v10 *rsdp1;
+ struct grub_acpi_table_header *rsdt;
+ grub_uint32_t *entry_ptr;
+
+ rsdp2 = grub_acpi_get_rsdpv2 ();
+ if (rsdp2)
+ rsdp1 = &(rsdp2->rsdpv1);
+ else
+ rsdp1 = grub_acpi_get_rsdpv1 ();
+ grub_dprintf ("acpi", "rsdp1=%p\n", rsdp1);
+ if (!rsdp1)
+ return;
+
+ rsdt = (struct grub_acpi_table_header *) (grub_addr_t) rsdp1->rsdt_addr;
+ for (entry_ptr = (grub_uint32_t *) (rsdt + 1);
+ entry_ptr < (grub_uint32_t *) (((grub_uint8_t *) rsdt)
+ + rsdt->length);
+ entry_ptr++)
+ {
+ if (grub_memcmp ((void *) (grub_addr_t) *entry_ptr, "FACP", 4) == 0)
+ {
+ grub_uint32_t port;
+ struct grub_acpi_fadt *fadt
+ = ((struct grub_acpi_fadt *) (grub_addr_t) *entry_ptr);
+ struct grub_acpi_table_header *dsdt
+ = (struct grub_acpi_table_header *) (grub_addr_t) fadt->dsdt_addr;
+ int sleep_type = -1;
+
+ port = fadt->pm1a;
+
+ grub_dprintf ("acpi", "PM1a port=%x\n", port);
+
+ if (grub_memcmp (dsdt->signature, "DSDT",
+ sizeof (dsdt->signature)) != 0)
+ break;
+
+ sleep_type = get_sleep_type ((grub_uint8_t *) dsdt,
+ (grub_uint8_t *) dsdt + dsdt->length);
+
+ if (sleep_type < 0 || sleep_type >= 8)
+ break;
+
+ grub_dprintf ("acpi", "SLP_TYP = %d, port = 0x%x\n",
+ sleep_type, port);
+
+ grub_outw (GRUB_ACPI_SLP_EN
+ | (sleep_type << GRUB_ACPI_SLP_TYP_OFFSET), port & 0xffff);
+ }
+ }
+
+ grub_millisleep (1500);
+
+ grub_printf ("ACPI shutdown failed\n");
+}
+#endif
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