diff options
| author | Lv Zheng <lv.zheng@intel.com> | 2014-10-10 04:39:32 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-10-21 00:39:39 +0200 |
| commit | f1b697525d5428856eaba2be2ee6dc1cf3efbbbe (patch) | |
| tree | b6c073084c0e3c9fb9332e549eaca14110795619 /drivers/acpi/acpica | |
| parent | ACPICA: Add string for _DDN method name. (diff) | |
| download | linux-f1b697525d5428856eaba2be2ee6dc1cf3efbbbe.tar.xz linux-f1b697525d5428856eaba2be2ee6dc1cf3efbbbe.zip | |
ACPICA: acpidump: Add ACPI 1.0 RSDP support.
The acpidump currently always uses ACPI 2.0 format to dump RSDP, this patch
adds ACPI 1.0 RSDP support.
Link: https://bugs.acpica.org/show_bug.cgi?id=1097
Link: https://bugs.acpica.org/show_bug.cgi?id=1103
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Reported-and-tested-by: Rudolf Marek <r.marek@assembler.cz>
Reported-and-tested-by: Rafal <fatwildcat@gmail.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpica')
| -rw-r--r-- | drivers/acpi/acpica/actables.h | 2 | ||||
| -rw-r--r-- | drivers/acpi/acpica/tbxfroot.c | 33 |
2 files changed, 34 insertions, 1 deletions
diff --git a/drivers/acpi/acpica/actables.h b/drivers/acpi/acpica/actables.h index f14882788eee..1afe46e44dac 100644 --- a/drivers/acpi/acpica/actables.h +++ b/drivers/acpi/acpica/actables.h @@ -49,6 +49,8 @@ acpi_status acpi_allocate_root_table(u32 initial_table_count); /* * tbxfroot - Root pointer utilities */ +u32 acpi_tb_get_rsdp_length(struct acpi_table_rsdp *rsdp); + acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp); u8 *acpi_tb_scan_memory_for_rsdp(u8 *start_address, u32 length); diff --git a/drivers/acpi/acpica/tbxfroot.c b/drivers/acpi/acpica/tbxfroot.c index 65ab8fed3d5e..43a54af2b548 100644 --- a/drivers/acpi/acpica/tbxfroot.c +++ b/drivers/acpi/acpica/tbxfroot.c @@ -50,6 +50,36 @@ ACPI_MODULE_NAME("tbxfroot") /******************************************************************************* * + * FUNCTION: acpi_tb_get_rsdp_length + * + * PARAMETERS: rsdp - Pointer to RSDP + * + * RETURN: Table length + * + * DESCRIPTION: Get the length of the RSDP + * + ******************************************************************************/ +u32 acpi_tb_get_rsdp_length(struct acpi_table_rsdp *rsdp) +{ + + if (!ACPI_VALIDATE_RSDP_SIG(rsdp->signature)) { + + /* BAD Signature */ + + return (0); + } + + /* "Length" field is available if table version >= 2 */ + + if (rsdp->revision >= 2) { + return (rsdp->length); + } else { + return (ACPI_RSDP_CHECKSUM_LENGTH); + } +} + +/******************************************************************************* + * * FUNCTION: acpi_tb_validate_rsdp * * PARAMETERS: rsdp - Pointer to unvalidated RSDP @@ -59,7 +89,8 @@ ACPI_MODULE_NAME("tbxfroot") * DESCRIPTION: Validate the RSDP (ptr) * ******************************************************************************/ -acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp) + +acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp * rsdp) { /* |