diff options
Diffstat (limited to 'drivers/acpi/tables/tbxfroot.c')
| -rw-r--r-- | drivers/acpi/tables/tbxfroot.c | 513 |
1 files changed, 258 insertions, 255 deletions
diff --git a/drivers/acpi/tables/tbxfroot.c b/drivers/acpi/tables/tbxfroot.c index dc3c3f6a9f62..3b8a7e063e8a 100644 --- a/drivers/acpi/tables/tbxfroot.c +++ b/drivers/acpi/tables/tbxfroot.c @@ -46,22 +46,56 @@ #include <acpi/acpi.h> #include <acpi/actables.h> - #define _COMPONENT ACPI_TABLES - ACPI_MODULE_NAME ("tbxfroot") +ACPI_MODULE_NAME("tbxfroot") /* Local prototypes */ - static acpi_status -acpi_tb_find_rsdp ( - struct acpi_table_desc *table_info, - u32 flags); +acpi_tb_find_rsdp(struct acpi_table_desc *table_info, u32 flags); -static u8 * -acpi_tb_scan_memory_for_rsdp ( - u8 *start_address, - u32 length); +static u8 *acpi_tb_scan_memory_for_rsdp(u8 * start_address, u32 length); +/******************************************************************************* + * + * FUNCTION: acpi_tb_validate_rsdp + * + * PARAMETERS: Rsdp - Pointer to unvalidated RSDP + * + * RETURN: Status + * + * DESCRIPTION: Validate the RSDP (ptr) + * + ******************************************************************************/ + +acpi_status acpi_tb_validate_rsdp(struct rsdp_descriptor *rsdp) +{ + ACPI_FUNCTION_ENTRY(); + + /* + * The signature and checksum must both be correct + */ + if (ACPI_STRNCMP((char *)rsdp, RSDP_SIG, sizeof(RSDP_SIG) - 1) != 0) { + /* Nope, BAD Signature */ + + return (AE_BAD_SIGNATURE); + } + + /* Check the standard checksum */ + + if (acpi_tb_generate_checksum(rsdp, ACPI_RSDP_CHECKSUM_LENGTH) != 0) { + return (AE_BAD_CHECKSUM); + } + + /* Check extended checksum if table version >= 2 */ + + if ((rsdp->revision >= 2) && + (acpi_tb_generate_checksum(rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) != + 0)) { + return (AE_BAD_CHECKSUM); + } + + return (AE_OK); +} /******************************************************************************* * @@ -80,28 +114,24 @@ acpi_tb_scan_memory_for_rsdp ( ******************************************************************************/ acpi_status -acpi_tb_find_table ( - char *signature, - char *oem_id, - char *oem_table_id, - struct acpi_table_header **table_ptr) +acpi_tb_find_table(char *signature, + char *oem_id, + char *oem_table_id, struct acpi_table_header ** table_ptr) { - acpi_status status; - struct acpi_table_header *table; - - - ACPI_FUNCTION_TRACE ("tb_find_table"); + acpi_status status; + struct acpi_table_header *table; + ACPI_FUNCTION_TRACE("tb_find_table"); /* Validate string lengths */ - if ((ACPI_STRLEN (signature) > ACPI_NAME_SIZE) || - (ACPI_STRLEN (oem_id) > sizeof (table->oem_id)) || - (ACPI_STRLEN (oem_table_id) > sizeof (table->oem_table_id))) { - return_ACPI_STATUS (AE_AML_STRING_LIMIT); + if ((ACPI_STRLEN(signature) > ACPI_NAME_SIZE) || + (ACPI_STRLEN(oem_id) > sizeof(table->oem_id)) || + (ACPI_STRLEN(oem_table_id) > sizeof(table->oem_table_id))) { + return_ACPI_STATUS(AE_AML_STRING_LIMIT); } - if (!ACPI_STRNCMP (signature, DSDT_SIG, ACPI_NAME_SIZE)) { + if (!ACPI_STRNCMP(signature, DSDT_SIG, ACPI_NAME_SIZE)) { /* * The DSDT pointer is contained in the FADT, not the RSDT. * This code should suffice, because the only code that would perform @@ -110,40 +140,36 @@ acpi_tb_find_table ( * If this becomes insufficient, the FADT will have to be found first. */ if (!acpi_gbl_DSDT) { - return_ACPI_STATUS (AE_NO_ACPI_TABLES); + return_ACPI_STATUS(AE_NO_ACPI_TABLES); } table = acpi_gbl_DSDT; - } - else { + } else { /* Find the table */ - status = acpi_get_firmware_table (signature, 1, - ACPI_LOGICAL_ADDRESSING, &table); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_get_firmware_table(signature, 1, + ACPI_LOGICAL_ADDRESSING, + &table); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } } /* Check oem_id and oem_table_id */ - if ((oem_id[0] && ACPI_STRNCMP ( - oem_id, table->oem_id, - sizeof (table->oem_id))) || - - (oem_table_id[0] && ACPI_STRNCMP ( - oem_table_id, table->oem_table_id, - sizeof (table->oem_table_id)))) { - return_ACPI_STATUS (AE_AML_NAME_NOT_FOUND); + if ((oem_id[0] && ACPI_STRNCMP(oem_id, table->oem_id, + sizeof(table->oem_id))) || + (oem_table_id[0] && ACPI_STRNCMP(oem_table_id, table->oem_table_id, + sizeof(table->oem_table_id)))) { + return_ACPI_STATUS(AE_AML_NAME_NOT_FOUND); } - ACPI_DEBUG_PRINT ((ACPI_DB_TABLES, "Found table [%4.4s]\n", - table->signature)); + ACPI_DEBUG_PRINT((ACPI_DB_TABLES, "Found table [%4.4s]\n", + table->signature)); *table_ptr = table; - return_ACPI_STATUS (AE_OK); + return_ACPI_STATUS(AE_OK); } - /******************************************************************************* * * FUNCTION: acpi_get_firmware_table @@ -164,34 +190,28 @@ acpi_tb_find_table ( ******************************************************************************/ acpi_status -acpi_get_firmware_table ( - acpi_string signature, - u32 instance, - u32 flags, - struct acpi_table_header **table_pointer) +acpi_get_firmware_table(acpi_string signature, + u32 instance, + u32 flags, struct acpi_table_header **table_pointer) { - acpi_status status; - struct acpi_pointer address; - struct acpi_table_header *header = NULL; - struct acpi_table_desc *table_info = NULL; - struct acpi_table_desc *rsdt_info; - u32 table_count; - u32 i; - u32 j; - - - ACPI_FUNCTION_TRACE ("acpi_get_firmware_table"); + acpi_status status; + struct acpi_pointer address; + struct acpi_table_header *header = NULL; + struct acpi_table_desc *table_info = NULL; + struct acpi_table_desc *rsdt_info; + u32 table_count; + u32 i; + u32 j; + ACPI_FUNCTION_TRACE("acpi_get_firmware_table"); /* * Ensure that at least the table manager is initialized. We don't * require that the entire ACPI subsystem is up for this interface. * If we have a buffer, we must have a length too */ - if ((instance == 0) || - (!signature) || - (!table_pointer)) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + if ((instance == 0) || (!signature) || (!table_pointer)) { + return_ACPI_STATUS(AE_BAD_PARAMETER); } /* Ensure that we have a RSDP */ @@ -199,48 +219,41 @@ acpi_get_firmware_table ( if (!acpi_gbl_RSDP) { /* Get the RSDP */ - status = acpi_os_get_root_pointer (flags, &address); - if (ACPI_FAILURE (status)) { - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "RSDP not found\n")); - return_ACPI_STATUS (AE_NO_ACPI_TABLES); + status = acpi_os_get_root_pointer(flags, &address); + if (ACPI_FAILURE(status)) { + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "RSDP not found\n")); + return_ACPI_STATUS(AE_NO_ACPI_TABLES); } /* Map and validate the RSDP */ if ((flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING) { - status = acpi_os_map_memory (address.pointer.physical, - sizeof (struct rsdp_descriptor), (void *) &acpi_gbl_RSDP); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_os_map_memory(address.pointer.physical, + sizeof(struct + rsdp_descriptor), + (void *)&acpi_gbl_RSDP); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - } - else { + } else { acpi_gbl_RSDP = address.pointer.logical; } - /* The signature and checksum must both be correct */ - - if (ACPI_STRNCMP ((char *) acpi_gbl_RSDP, RSDP_SIG, - sizeof (RSDP_SIG)-1) != 0) { - /* Nope, BAD Signature */ + /* The RDSP signature and checksum must both be correct */ - return_ACPI_STATUS (AE_BAD_SIGNATURE); - } - - if (acpi_tb_checksum (acpi_gbl_RSDP, ACPI_RSDP_CHECKSUM_LENGTH) != 0) { - /* Nope, BAD Checksum */ - - return_ACPI_STATUS (AE_BAD_CHECKSUM); + status = acpi_tb_validate_rsdp(acpi_gbl_RSDP); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } } /* Get the RSDT address via the RSDP */ - acpi_tb_get_rsdt_address (&address); - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "RSDP located at %p, RSDT physical=%8.8X%8.8X \n", - acpi_gbl_RSDP, - ACPI_FORMAT_UINT64 (address.pointer.value))); + acpi_tb_get_rsdt_address(&address); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "RSDP located at %p, RSDT physical=%8.8X%8.8X \n", + acpi_gbl_RSDP, + ACPI_FORMAT_UINT64(address.pointer.value))); /* Insert processor_mode flags */ @@ -248,30 +261,30 @@ acpi_get_firmware_table ( /* Get and validate the RSDT */ - rsdt_info = ACPI_MEM_CALLOCATE (sizeof (struct acpi_table_desc)); + rsdt_info = ACPI_MEM_CALLOCATE(sizeof(struct acpi_table_desc)); if (!rsdt_info) { - return_ACPI_STATUS (AE_NO_MEMORY); + return_ACPI_STATUS(AE_NO_MEMORY); } - status = acpi_tb_get_table (&address, rsdt_info); - if (ACPI_FAILURE (status)) { + status = acpi_tb_get_table(&address, rsdt_info); + if (ACPI_FAILURE(status)) { goto cleanup; } - status = acpi_tb_validate_rsdt (rsdt_info->pointer); - if (ACPI_FAILURE (status)) { + status = acpi_tb_validate_rsdt(rsdt_info->pointer); + if (ACPI_FAILURE(status)) { goto cleanup; } /* Allocate a scratch table header and table descriptor */ - header = ACPI_MEM_ALLOCATE (sizeof (struct acpi_table_header)); + header = ACPI_MEM_ALLOCATE(sizeof(struct acpi_table_header)); if (!header) { status = AE_NO_MEMORY; goto cleanup; } - table_info = ACPI_MEM_ALLOCATE (sizeof (struct acpi_table_desc)); + table_info = ACPI_MEM_ALLOCATE(sizeof(struct acpi_table_desc)); if (!table_info) { status = AE_NO_MEMORY; goto cleanup; @@ -279,7 +292,8 @@ acpi_get_firmware_table ( /* Get the number of table pointers within the RSDT */ - table_count = acpi_tb_get_table_count (acpi_gbl_RSDP, rsdt_info->pointer); + table_count = + acpi_tb_get_table_count(acpi_gbl_RSDP, rsdt_info->pointer); address.pointer_type = acpi_gbl_table_flags | flags; /* @@ -287,35 +301,42 @@ acpi_get_firmware_table ( * requested table */ for (i = 0, j = 0; i < table_count; i++) { - /* Get the next table pointer, handle RSDT vs. XSDT */ - - if (acpi_gbl_RSDP->revision < 2) { - address.pointer.value = (ACPI_CAST_PTR ( - RSDT_DESCRIPTOR, rsdt_info->pointer))->table_offset_entry[i]; - } - else { - address.pointer.value = (ACPI_CAST_PTR ( - XSDT_DESCRIPTOR, rsdt_info->pointer))->table_offset_entry[i]; + /* + * Get the next table pointer, handle RSDT vs. XSDT + * RSDT pointers are 32 bits, XSDT pointers are 64 bits + */ + if (acpi_gbl_root_table_type == ACPI_TABLE_TYPE_RSDT) { + address.pointer.value = + (ACPI_CAST_PTR + (RSDT_DESCRIPTOR, + rsdt_info->pointer))->table_offset_entry[i]; + } else { + address.pointer.value = + (ACPI_CAST_PTR + (XSDT_DESCRIPTOR, + rsdt_info->pointer))->table_offset_entry[i]; } /* Get the table header */ - status = acpi_tb_get_table_header (&address, header); - if (ACPI_FAILURE (status)) { + status = acpi_tb_get_table_header(&address, header); + if (ACPI_FAILURE(status)) { goto cleanup; } /* Compare table signatures and table instance */ - if (!ACPI_STRNCMP (header->signature, signature, ACPI_NAME_SIZE)) { + if (!ACPI_STRNCMP(header->signature, signature, ACPI_NAME_SIZE)) { /* An instance of the table was found */ j++; if (j >= instance) { /* Found the correct instance, get the entire table */ - status = acpi_tb_get_table_body (&address, header, table_info); - if (ACPI_FAILURE (status)) { + status = + acpi_tb_get_table_body(&address, header, + table_info); + if (ACPI_FAILURE(status)) { goto cleanup; } @@ -329,22 +350,23 @@ acpi_get_firmware_table ( status = AE_NOT_EXIST; - -cleanup: - acpi_os_unmap_memory (rsdt_info->pointer, - (acpi_size) rsdt_info->pointer->length); - ACPI_MEM_FREE (rsdt_info); + cleanup: + if (rsdt_info->pointer) { + acpi_os_unmap_memory(rsdt_info->pointer, + (acpi_size) rsdt_info->pointer->length); + } + ACPI_MEM_FREE(rsdt_info); if (header) { - ACPI_MEM_FREE (header); + ACPI_MEM_FREE(header); } if (table_info) { - ACPI_MEM_FREE (table_info); + ACPI_MEM_FREE(table_info); } - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } -EXPORT_SYMBOL(acpi_get_firmware_table); +EXPORT_SYMBOL(acpi_get_firmware_table); /* TBD: Move to a new file */ @@ -363,35 +385,29 @@ EXPORT_SYMBOL(acpi_get_firmware_table); * ******************************************************************************/ -acpi_status -acpi_find_root_pointer ( - u32 flags, - struct acpi_pointer *rsdp_address) +acpi_status acpi_find_root_pointer(u32 flags, struct acpi_pointer *rsdp_address) { - struct acpi_table_desc table_info; - acpi_status status; - - - ACPI_FUNCTION_TRACE ("acpi_find_root_pointer"); + struct acpi_table_desc table_info; + acpi_status status; + ACPI_FUNCTION_TRACE("acpi_find_root_pointer"); /* Get the RSDP */ - status = acpi_tb_find_rsdp (&table_info, flags); - if (ACPI_FAILURE (status)) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "RSDP structure not found, %s Flags=%X\n", - acpi_format_exception (status), flags)); + status = acpi_tb_find_rsdp(&table_info, flags); + if (ACPI_FAILURE(status)) { + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "RSDP structure not found, %s Flags=%X\n", + acpi_format_exception(status), flags)); - return_ACPI_STATUS (AE_NO_ACPI_TABLES); + return_ACPI_STATUS(AE_NO_ACPI_TABLES); } rsdp_address->pointer_type = ACPI_PHYSICAL_POINTER; rsdp_address->pointer.physical = table_info.physical_address; - return_ACPI_STATUS (AE_OK); + return_ACPI_STATUS(AE_OK); } - /******************************************************************************* * * FUNCTION: acpi_tb_scan_memory_for_rsdp @@ -405,68 +421,45 @@ acpi_find_root_pointer ( * ******************************************************************************/ -static u8 * -acpi_tb_scan_memory_for_rsdp ( - u8 *start_address, - u32 length) +static u8 *acpi_tb_scan_memory_for_rsdp(u8 * start_address, u32 length) { - u8 *mem_rover; - u8 *end_address; - u8 checksum; - - - ACPI_FUNCTION_TRACE ("tb_scan_memory_for_rsdp"); + acpi_status status; + u8 *mem_rover; + u8 *end_address; + ACPI_FUNCTION_TRACE("tb_scan_memory_for_rsdp"); end_address = start_address + length; /* Search from given start address for the requested length */ for (mem_rover = start_address; mem_rover < end_address; - mem_rover += ACPI_RSDP_SCAN_STEP) { - /* The signature and checksum must both be correct */ - - if (ACPI_STRNCMP ((char *) mem_rover, - RSDP_SIG, sizeof (RSDP_SIG) - 1) != 0) { - /* No signature match, keep looking */ - - continue; - } - - /* Signature matches, check the appropriate checksum */ - - if ((ACPI_CAST_PTR (struct rsdp_descriptor, mem_rover))->revision < 2) { - /* ACPI version 1.0 */ - - checksum = acpi_tb_checksum (mem_rover, ACPI_RSDP_CHECKSUM_LENGTH); - } - else { - /* Post ACPI 1.0, use extended_checksum */ - - checksum = acpi_tb_checksum (mem_rover, ACPI_RSDP_XCHECKSUM_LENGTH); + mem_rover += ACPI_RSDP_SCAN_STEP) { + /* The RSDP signature and checksum must both be correct */ + + status = + acpi_tb_validate_rsdp(ACPI_CAST_PTR + (struct rsdp_descriptor, mem_rover)); + if (ACPI_SUCCESS(status)) { + /* Sig and checksum valid, we have found a real RSDP */ + + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "RSDP located at physical address %p\n", + mem_rover)); + return_PTR(mem_rover); } - if (checksum == 0) { - /* Checksum valid, we have found a valid RSDP */ - - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "RSDP located at physical address %p\n", mem_rover)); - return_PTR (mem_rover); - } - - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "Found an RSDP at physical address %p, but it has a bad checksum\n", - mem_rover)); + /* No sig match or bad checksum, keep searching */ } /* Searched entire block, no RSDP was found */ - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "Searched entire block, no valid RSDP was found.\n")); - return_PTR (NULL); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Searched entire block from %p, valid RSDP was not found\n", + start_address)); + return_PTR(NULL); } - /******************************************************************************* * * FUNCTION: acpi_tb_find_rsdp @@ -490,18 +483,14 @@ acpi_tb_scan_memory_for_rsdp ( ******************************************************************************/ static acpi_status -acpi_tb_find_rsdp ( - struct acpi_table_desc *table_info, - u32 flags) +acpi_tb_find_rsdp(struct acpi_table_desc *table_info, u32 flags) { - u8 *table_ptr; - u8 *mem_rover; - u32 physical_address; - acpi_status status; - - - ACPI_FUNCTION_TRACE ("tb_find_rsdp"); + u8 *table_ptr; + u8 *mem_rover; + u32 physical_address; + acpi_status status; + ACPI_FUNCTION_TRACE("tb_find_rsdp"); /* * Scan supports either logical addressing or physical addressing @@ -509,23 +498,25 @@ acpi_tb_find_rsdp ( if ((flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING) { /* 1a) Get the location of the Extended BIOS Data Area (EBDA) */ - status = acpi_os_map_memory ( - (acpi_physical_address) ACPI_EBDA_PTR_LOCATION, - ACPI_EBDA_PTR_LENGTH, (void *) &table_ptr); - if (ACPI_FAILURE (status)) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Could not map memory at %8.8X for length %X\n", - ACPI_EBDA_PTR_LOCATION, ACPI_EBDA_PTR_LENGTH)); - - return_ACPI_STATUS (status); + status = acpi_os_map_memory((acpi_physical_address) + ACPI_EBDA_PTR_LOCATION, + ACPI_EBDA_PTR_LENGTH, + (void *)&table_ptr); + if (ACPI_FAILURE(status)) { + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Could not map memory at %8.8X for length %X\n", + ACPI_EBDA_PTR_LOCATION, + ACPI_EBDA_PTR_LENGTH)); + + return_ACPI_STATUS(status); } - ACPI_MOVE_16_TO_32 (&physical_address, table_ptr); + ACPI_MOVE_16_TO_32(&physical_address, table_ptr); /* Convert segment part to physical address */ physical_address <<= 4; - acpi_os_unmap_memory (table_ptr, ACPI_EBDA_PTR_LENGTH); + acpi_os_unmap_memory(table_ptr, ACPI_EBDA_PTR_LENGTH); /* EBDA present? */ @@ -534,59 +525,67 @@ acpi_tb_find_rsdp ( * 1b) Search EBDA paragraphs (EBDa is required to be a * minimum of 1_k length) */ - status = acpi_os_map_memory ( - (acpi_physical_address) physical_address, - ACPI_EBDA_WINDOW_SIZE, (void *) &table_ptr); - if (ACPI_FAILURE (status)) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Could not map memory at %8.8X for length %X\n", - physical_address, ACPI_EBDA_WINDOW_SIZE)); - - return_ACPI_STATUS (status); + status = acpi_os_map_memory((acpi_physical_address) + physical_address, + ACPI_EBDA_WINDOW_SIZE, + (void *)&table_ptr); + if (ACPI_FAILURE(status)) { + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Could not map memory at %8.8X for length %X\n", + physical_address, + ACPI_EBDA_WINDOW_SIZE)); + + return_ACPI_STATUS(status); } - mem_rover = acpi_tb_scan_memory_for_rsdp (table_ptr, - ACPI_EBDA_WINDOW_SIZE); - acpi_os_unmap_memory (table_ptr, ACPI_EBDA_WINDOW_SIZE); + mem_rover = acpi_tb_scan_memory_for_rsdp(table_ptr, + ACPI_EBDA_WINDOW_SIZE); + acpi_os_unmap_memory(table_ptr, ACPI_EBDA_WINDOW_SIZE); if (mem_rover) { - /* Found it, return the physical address */ + /* Return the physical address */ - physical_address += ACPI_PTR_DIFF (mem_rover, table_ptr); + physical_address += + ACPI_PTR_DIFF(mem_rover, table_ptr); table_info->physical_address = - (acpi_physical_address) physical_address; - return_ACPI_STATUS (AE_OK); + (acpi_physical_address) physical_address; + return_ACPI_STATUS(AE_OK); } } /* * 2) Search upper memory: 16-byte boundaries in E0000h-FFFFFh */ - status = acpi_os_map_memory ( - (acpi_physical_address) ACPI_HI_RSDP_WINDOW_BASE, - ACPI_HI_RSDP_WINDOW_SIZE, (void *) &table_ptr); - - if (ACPI_FAILURE (status)) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Could not map memory at %8.8X for length %X\n", - ACPI_HI_RSDP_WINDOW_BASE, ACPI_HI_RSDP_WINDOW_SIZE)); - - return_ACPI_STATUS (status); + status = acpi_os_map_memory((acpi_physical_address) + ACPI_HI_RSDP_WINDOW_BASE, + ACPI_HI_RSDP_WINDOW_SIZE, + (void *)&table_ptr); + + if (ACPI_FAILURE(status)) { + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Could not map memory at %8.8X for length %X\n", + ACPI_HI_RSDP_WINDOW_BASE, + ACPI_HI_RSDP_WINDOW_SIZE)); + + return_ACPI_STATUS(status); } - mem_rover = acpi_tb_scan_memory_for_rsdp (table_ptr, ACPI_HI_RSDP_WINDOW_SIZE); - acpi_os_unmap_memory (table_ptr, ACPI_HI_RSDP_WINDOW_SIZE); + mem_rover = + acpi_tb_scan_memory_for_rsdp(table_ptr, + ACPI_HI_RSDP_WINDOW_SIZE); + acpi_os_unmap_memory(table_ptr, ACPI_HI_RSDP_WINDOW_SIZE); if (mem_rover) { - /* Found it, return the physical address */ + /* Return the physical address */ physical_address = - ACPI_HI_RSDP_WINDOW_BASE + ACPI_PTR_DIFF (mem_rover, table_ptr); + ACPI_HI_RSDP_WINDOW_BASE + ACPI_PTR_DIFF(mem_rover, + table_ptr); table_info->physical_address = - (acpi_physical_address) physical_address; - return_ACPI_STATUS (AE_OK); + (acpi_physical_address) physical_address; + return_ACPI_STATUS(AE_OK); } } @@ -596,8 +595,8 @@ acpi_tb_find_rsdp ( else { /* 1a) Get the location of the EBDA */ - ACPI_MOVE_16_TO_32 (&physical_address, ACPI_EBDA_PTR_LOCATION); - physical_address <<= 4; /* Convert segment to physical address */ + ACPI_MOVE_16_TO_32(&physical_address, ACPI_EBDA_PTR_LOCATION); + physical_address <<= 4; /* Convert segment to physical address */ /* EBDA present? */ @@ -606,34 +605,38 @@ acpi_tb_find_rsdp ( * 1b) Search EBDA paragraphs (EBDa is required to be a minimum of * 1_k length) */ - mem_rover = acpi_tb_scan_memory_for_rsdp ( - ACPI_PHYSADDR_TO_PTR (physical_address), - ACPI_EBDA_WINDOW_SIZE); + mem_rover = + acpi_tb_scan_memory_for_rsdp(ACPI_PHYSADDR_TO_PTR + (physical_address), + ACPI_EBDA_WINDOW_SIZE); if (mem_rover) { - /* Found it, return the physical address */ + /* Return the physical address */ - table_info->physical_address = ACPI_TO_INTEGER (mem_rover); - return_ACPI_STATUS (AE_OK); + table_info->physical_address = + ACPI_TO_INTEGER(mem_rover); + return_ACPI_STATUS(AE_OK); } } /* 2) Search upper memory: 16-byte boundaries in E0000h-FFFFFh */ - mem_rover = acpi_tb_scan_memory_for_rsdp ( - ACPI_PHYSADDR_TO_PTR (ACPI_HI_RSDP_WINDOW_BASE), - ACPI_HI_RSDP_WINDOW_SIZE); + mem_rover = + acpi_tb_scan_memory_for_rsdp(ACPI_PHYSADDR_TO_PTR + (ACPI_HI_RSDP_WINDOW_BASE), + ACPI_HI_RSDP_WINDOW_SIZE); if (mem_rover) { /* Found it, return the physical address */ - table_info->physical_address = ACPI_TO_INTEGER (mem_rover); - return_ACPI_STATUS (AE_OK); + table_info->physical_address = + ACPI_TO_INTEGER(mem_rover); + return_ACPI_STATUS(AE_OK); } } - /* RSDP signature was not found */ + /* A valid RSDP was not found */ - return_ACPI_STATUS (AE_NOT_FOUND); + ACPI_REPORT_ERROR(("No valid RSDP was found\n")); + return_ACPI_STATUS(AE_NOT_FOUND); } #endif - |