diff options
Diffstat (limited to 'pc-bios/bios-pq')
| -rw-r--r-- | pc-bios/bios-pq/0006_acpi-packing.patch | 36 | ||||
| -rw-r--r-- | pc-bios/bios-pq/series | 1 |
2 files changed, 37 insertions, 0 deletions
diff --git a/pc-bios/bios-pq/0006_acpi-packing.patch b/pc-bios/bios-pq/0006_acpi-packing.patch new file mode 100644 index 0000000000..0037046a67 --- /dev/null +++ b/pc-bios/bios-pq/0006_acpi-packing.patch @@ -0,0 +1,36 @@ +Make ACPI tables byte-aligned + +The ACPI spec requires structures to be byte-aligned. I'm a bit surprised we've +gotten away with this for so long. This patch allows Knoppix to boot. This bug +was reported by Paul Brook. + +Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> + +diff --git a/bios/rombios32.c b/bios/rombios32.c +index 7953485..540912a 100644 +--- a/bios/rombios32.c ++++ b/bios/rombios32.c +@@ -1099,6 +1099,12 @@ static void mptable_init(void) + /* Table structure from Linux kernel (the ACPI tables are under the + BSD license) */ + ++/* ++ * All tables must be byte-packed to match the ACPI specification, since ++ * the tables are provided by the system BIOS. ++ */ ++#pragma pack(1) ++ + #define ACPI_TABLE_HEADER_DEF /* ACPI common table header */ \ + uint8_t signature [4]; /* ACPI signature (4 ASCII characters) */\ + uint32_t length; /* Length of table, in bytes, including header */\ +@@ -1326,6 +1332,10 @@ struct madt_int_override + }; + #endif + ++/* Reset to default packing */ ++ ++#pragma pack() ++ + #include "acpi-dsdt.hex" + + static inline uint16_t cpu_to_le16(uint16_t x) diff --git a/pc-bios/bios-pq/series b/pc-bios/bios-pq/series index beff2c6d44..b53157ecd9 100644 --- a/pc-bios/bios-pq/series +++ b/pc-bios/bios-pq/series @@ -3,3 +3,4 @@ 0003_smp-startup-poll.patch 0004_no-stack-protector.patch 0005_hpet.patch +0006_acpi-packing.patch |