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-rw-r--r--drivers/acpi/tables/tbinstal.c12
-rw-r--r--drivers/acpi/tables/tbrsdt.c25
-rw-r--r--drivers/acpi/tables/tbxface.c3
-rw-r--r--drivers/acpi/tables/tbxfroot.c106
4 files changed, 75 insertions, 71 deletions
diff --git a/drivers/acpi/tables/tbinstal.c b/drivers/acpi/tables/tbinstal.c
index 629b64c8193d..2ad72f204551 100644
--- a/drivers/acpi/tables/tbinstal.c
+++ b/drivers/acpi/tables/tbinstal.c
@@ -251,6 +251,7 @@ acpi_tb_init_table_descriptor (
{
struct acpi_table_list *list_head;
struct acpi_table_desc *table_desc;
+ acpi_status status;
ACPI_FUNCTION_TRACE_U32 ("tb_init_table_descriptor", table_type);
@@ -263,6 +264,13 @@ acpi_tb_init_table_descriptor (
return_ACPI_STATUS (AE_NO_MEMORY);
}
+ /* Get a new owner ID for the table */
+
+ status = acpi_ut_allocate_owner_id (&table_desc->owner_id);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
/* Install the table into the global data structure */
list_head = &acpi_gbl_table_lists[table_type];
@@ -325,8 +333,6 @@ acpi_tb_init_table_descriptor (
table_desc->aml_start = (u8 *) (table_desc->pointer + 1),
table_desc->aml_length = (u32) (table_desc->length -
(u32) sizeof (struct acpi_table_header));
- table_desc->table_id = acpi_ut_allocate_owner_id (
- ACPI_OWNER_TYPE_TABLE);
table_desc->loaded_into_namespace = FALSE;
/*
@@ -339,7 +345,7 @@ acpi_tb_init_table_descriptor (
/* Return Data */
- table_info->table_id = table_desc->table_id;
+ table_info->owner_id = table_desc->owner_id;
table_info->installed_desc = table_desc;
return_ACPI_STATUS (AE_OK);
diff --git a/drivers/acpi/tables/tbrsdt.c b/drivers/acpi/tables/tbrsdt.c
index 13c6ddb2f546..069d498465d0 100644
--- a/drivers/acpi/tables/tbrsdt.c
+++ b/drivers/acpi/tables/tbrsdt.c
@@ -96,32 +96,13 @@ acpi_tb_verify_rsdp (
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
- /*
- * The signature and checksum must both be correct
- */
- if (ACPI_STRNCMP ((char *) rsdp, RSDP_SIG, sizeof (RSDP_SIG)-1) != 0) {
- /* Nope, BAD Signature */
-
- status = AE_BAD_SIGNATURE;
- goto cleanup;
- }
-
- /* Check the standard checksum */
+ /* Verify RSDP signature and checksum */
- if (acpi_tb_checksum (rsdp, ACPI_RSDP_CHECKSUM_LENGTH) != 0) {
- status = AE_BAD_CHECKSUM;
+ status = acpi_tb_validate_rsdp (rsdp);
+ if (ACPI_FAILURE (status)) {
goto cleanup;
}
- /* Check extended checksum if table version >= 2 */
-
- if (rsdp->revision >= 2) {
- if (acpi_tb_checksum (rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) != 0) {
- status = AE_BAD_CHECKSUM;
- goto cleanup;
- }
- }
-
/* The RSDP supplied is OK */
table_info.pointer = ACPI_CAST_PTR (struct acpi_table_header, rsdp);
diff --git a/drivers/acpi/tables/tbxface.c b/drivers/acpi/tables/tbxface.c
index 0c0b9085dbeb..ca2dbdd23ed3 100644
--- a/drivers/acpi/tables/tbxface.c
+++ b/drivers/acpi/tables/tbxface.c
@@ -260,8 +260,7 @@ acpi_unload_table (
* "Scope" operator. Thus, we need to track ownership by an ID, not
* simply a position within the hierarchy
*/
- acpi_ns_delete_namespace_by_owner (table_desc->table_id);
-
+ acpi_ns_delete_namespace_by_owner (table_desc->owner_id);
table_desc = table_desc->next;
}
diff --git a/drivers/acpi/tables/tbxfroot.c b/drivers/acpi/tables/tbxfroot.c
index fe9c8317df46..abb4c9346560 100644
--- a/drivers/acpi/tables/tbxfroot.c
+++ b/drivers/acpi/tables/tbxfroot.c
@@ -65,6 +65,51 @@ acpi_tb_scan_memory_for_rsdp (
/*******************************************************************************
*
+ * 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_checksum (rsdp, ACPI_RSDP_CHECKSUM_LENGTH) != 0) {
+ return (AE_BAD_CHECKSUM);
+ }
+
+ /* Check extended checksum if table version >= 2 */
+
+ if ((rsdp->revision >= 2) &&
+ (acpi_tb_checksum (rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) != 0)) {
+ return (AE_BAD_CHECKSUM);
+ }
+
+ return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
* FUNCTION: acpi_tb_find_table
*
* PARAMETERS: Signature - String with ACPI table signature
@@ -218,19 +263,11 @@ acpi_get_firmware_table (
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);
}
}
@@ -414,9 +451,9 @@ acpi_tb_scan_memory_for_rsdp (
u8 *start_address,
u32 length)
{
+ acpi_status status;
u8 *mem_rover;
u8 *end_address;
- u8 checksum;
ACPI_FUNCTION_TRACE ("tb_scan_memory_for_rsdp");
@@ -428,45 +465,25 @@ acpi_tb_scan_memory_for_rsdp (
for (mem_rover = start_address; mem_rover < end_address;
mem_rover += ACPI_RSDP_SCAN_STEP) {
- /* The signature and checksum must both be correct */
+ /* The RSDP 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);
- }
-
- if (checksum == 0) {
- /* Checksum valid, we have found a valid RSDP */
+ 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);
}
- 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"));
+ "Searched entire block from %p, valid RSDP was not found\n",
+ start_address));
return_PTR (NULL);
}
@@ -554,7 +571,7 @@ acpi_tb_find_rsdp (
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);
@@ -583,7 +600,7 @@ acpi_tb_find_rsdp (
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);
@@ -614,7 +631,7 @@ acpi_tb_find_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);
@@ -634,8 +651,9 @@ acpi_tb_find_rsdp (
}
}
- /* RSDP signature was not found */
+ /* A valid RSDP was not found */
+ ACPI_REPORT_ERROR (("No valid RSDP was found\n"));
return_ACPI_STATUS (AE_NOT_FOUND);
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.