---
lib/acpi.h | 157 ++++++++++++++++++++++++++---------------------------
lib/acpi.c | 70 ++++++++++++------------
2 files changed, 111 insertions(+), 116 deletions(-)
diff --git a/lib/acpi.h b/lib/acpi.h
index 1e89840c..b67bbe19 100644
--- a/lib/acpi.h
+++ b/lib/acpi.h
@@ -3,7 +3,7 @@
#include "libcflat.h"
-#define ACPI_SIGNATURE(c1, c2, c3, c4) \
+#define ACPI_SIGNATURE(c1, c2, c3, c4) \
((c1) | ((c2) << 8) | ((c3) << 16) | ((c4) << 24))
#define RSDP_SIGNATURE ACPI_SIGNATURE('R','S','D','P')
@@ -11,102 +11,99 @@
#define FACP_SIGNATURE ACPI_SIGNATURE('F','A','C','P')
#define FACS_SIGNATURE ACPI_SIGNATURE('F','A','C','S')
-
-#define ACPI_SIGNATURE_8BYTE(c1, c2, c3, c4, c5, c6, c7, c8) \
- ((uint64_t)(ACPI_SIGNATURE(c1, c2, c3, c4))) | \
+#define ACPI_SIGNATURE_8BYTE(c1, c2, c3, c4, c5, c6, c7, c8) \
+ ((uint64_t)(ACPI_SIGNATURE(c1, c2, c3, c4))) | \
((uint64_t)(ACPI_SIGNATURE(c5, c6, c7, c8)) << 32)
#define RSDP_SIGNATURE_8BYTE (ACPI_SIGNATURE_8BYTE('R', 'S', 'D', ' ', 'P', 'T', 'R', ' '))
-struct rsdp_descriptor { /* Root System Descriptor Pointer */
- u64 signature; /* ACPI signature, contains "RSD PTR " */
- u8 checksum; /* To make sum of struct == 0 */
- u8 oem_id [6]; /* OEM identification */
- u8 revision; /* Must be 0 for 1.0, 2 for 2.0 */
- u32 rsdt_physical_address; /* 32-bit physical address of RSDT */
- u32 length; /* XSDT Length in bytes including hdr */
- u64 xsdt_physical_address; /* 64-bit physical address of XSDT */
- u8 extended_checksum; /* Checksum of entire table */
- u8 reserved [3]; /* Reserved field must be 0 */
+struct rsdp_descriptor { /* Root System Descriptor Pointer */
+ u64 signature; /* ACPI signature, contains "RSD PTR " */
+ u8 checksum; /* To make sum of struct == 0 */
+ u8 oem_id[6]; /* OEM identification */
+ u8 revision; /* Must be 0 for 1.0, 2 for 2.0 */
+ u32 rsdt_physical_address; /* 32-bit physical address of RSDT */
+ u32 length; /* XSDT Length in bytes including hdr */
+ u64 xsdt_physical_address; /* 64-bit physical address of XSDT */
+ u8 extended_checksum; /* Checksum of entire table */
+ u8 reserved[3]; /* Reserved field must be 0 */
};
-#define ACPI_TABLE_HEADER_DEF /* ACPI common table header */ \
- u32 signature; /* ACPI signature (4 ASCII characters) */ \
- u32 length; /* Length of table, in bytes, including header */ \
- u8 revision; /* ACPI Specification minor version # */ \
- u8 checksum; /* To make sum of entire table == 0 */ \
- u8 oem_id [6]; /* OEM identification */ \
- u8 oem_table_id [8]; /* OEM table identification */ \
- u32 oem_revision; /* OEM revision number */ \
- u8 asl_compiler_id [4]; /* ASL compiler vendor ID */ \
- u32 asl_compiler_revision; /* ASL compiler revision number */
+#define ACPI_TABLE_HEADER_DEF /* ACPI common table header */ \
+ u32 signature; /* ACPI signature (4 ASCII characters) */ \
+ u32 length; /* Length of table, in bytes, including header */ \
+ u8 revision; /* ACPI Specification minor version # */ \
+ u8 checksum; /* To make sum of entire table == 0 */ \
+ u8 oem_id [6]; /* OEM identification */ \
+ u8 oem_table_id [8]; /* OEM table identification */ \
+ u32 oem_revision; /* OEM revision number */ \
+ u8 asl_compiler_id [4]; /* ASL compiler vendor ID */ \
+ u32 asl_compiler_revision; /* ASL compiler revision number */
struct acpi_table {
- ACPI_TABLE_HEADER_DEF
- char data[0];
+ ACPI_TABLE_HEADER_DEF
+ char data[0];
};
struct rsdt_descriptor_rev1 {
- ACPI_TABLE_HEADER_DEF
- u32 table_offset_entry[0];
+ ACPI_TABLE_HEADER_DEF
+ u32 table_offset_entry[1];
};
-struct fadt_descriptor_rev1
-{
- ACPI_TABLE_HEADER_DEF /* ACPI common table header */
- u32 firmware_ctrl; /* Physical address of FACS */
- u32 dsdt; /* Physical address of DSDT */
- u8 model; /* System Interrupt Model */
- u8 reserved1; /* Reserved */
- u16 sci_int; /* System vector of SCI interrupt */
- u32 smi_cmd; /* Port address of SMI command port */
- u8 acpi_enable; /* Value to write to smi_cmd to enable ACPI */
- u8 acpi_disable; /* Value to write to smi_cmd to disable ACPI */
- u8 S4bios_req; /* Value to write to SMI CMD to enter S4BIOS state */
- u8 reserved2; /* Reserved - must be zero */
- u32 pm1a_evt_blk; /* Port address of Power Mgt 1a acpi_event Reg Blk */
- u32 pm1b_evt_blk; /* Port address of Power Mgt 1b acpi_event Reg Blk */
- u32 pm1a_cnt_blk; /* Port address of Power Mgt 1a Control Reg Blk */
- u32 pm1b_cnt_blk; /* Port address of Power Mgt 1b Control Reg Blk */
- u32 pm2_cnt_blk; /* Port address of Power Mgt 2 Control Reg Blk */
- u32 pm_tmr_blk; /* Port address of Power Mgt Timer Ctrl Reg Blk */
- u32 gpe0_blk; /* Port addr of General Purpose acpi_event 0 Reg Blk */
- u32 gpe1_blk; /* Port addr of General Purpose acpi_event 1 Reg Blk */
- u8 pm1_evt_len; /* Byte length of ports at pm1_x_evt_blk */
- u8 pm1_cnt_len; /* Byte length of ports at pm1_x_cnt_blk */
- u8 pm2_cnt_len; /* Byte Length of ports at pm2_cnt_blk */
- u8 pm_tmr_len; /* Byte Length of ports at pm_tm_blk */
- u8 gpe0_blk_len; /* Byte Length of ports at gpe0_blk */
- u8 gpe1_blk_len; /* Byte Length of ports at gpe1_blk */
- u8 gpe1_base; /* Offset in gpe model where gpe1 events start */
- u8 reserved3; /* Reserved */
- u16 plvl2_lat; /* Worst case HW latency to enter/exit C2 state */
- u16 plvl3_lat; /* Worst case HW latency to enter/exit C3 state */
- u16 flush_size; /* Size of area read to flush caches */
- u16 flush_stride; /* Stride used in flushing caches */
- u8 duty_offset; /* Bit location of duty cycle field in p_cnt reg */
- u8 duty_width; /* Bit width of duty cycle field in p_cnt reg */
- u8 day_alrm; /* Index to day-of-month alarm in RTC CMOS RAM */
- u8 mon_alrm; /* Index to month-of-year alarm in RTC CMOS RAM */
- u8 century; /* Index to century in RTC CMOS RAM */
- u8 reserved4; /* Reserved */
- u8 reserved4a; /* Reserved */
- u8 reserved4b; /* Reserved */
+struct fadt_descriptor_rev1 {
+ ACPI_TABLE_HEADER_DEF /* ACPI common table header */
+ u32 firmware_ctrl; /* Physical address of FACS */
+ u32 dsdt; /* Physical address of DSDT */
+ u8 model; /* System Interrupt Model */
+ u8 reserved1; /* Reserved */
+ u16 sci_int; /* System vector of SCI interrupt */
+ u32 smi_cmd; /* Port address of SMI command port */
+ u8 acpi_enable; /* Value to write to smi_cmd to enable ACPI */
+ u8 acpi_disable; /* Value to write to smi_cmd to disable ACPI */
+ u8 S4bios_req; /* Value to write to SMI CMD to enter S4BIOS state */
+ u8 reserved2; /* Reserved - must be zero */
+ u32 pm1a_evt_blk; /* Port address of Power Mgt 1a acpi_event Reg Blk */
+ u32 pm1b_evt_blk; /* Port address of Power Mgt 1b acpi_event Reg Blk */
+ u32 pm1a_cnt_blk; /* Port address of Power Mgt 1a Control Reg Blk */
+ u32 pm1b_cnt_blk; /* Port address of Power Mgt 1b Control Reg Blk */
+ u32 pm2_cnt_blk; /* Port address of Power Mgt 2 Control Reg Blk */
+ u32 pm_tmr_blk; /* Port address of Power Mgt Timer Ctrl Reg Blk */
+ u32 gpe0_blk; /* Port addr of General Purpose acpi_event 0 Reg Blk */
+ u32 gpe1_blk; /* Port addr of General Purpose acpi_event 1 Reg Blk */
+ u8 pm1_evt_len; /* Byte length of ports at pm1_x_evt_blk */
+ u8 pm1_cnt_len; /* Byte length of ports at pm1_x_cnt_blk */
+ u8 pm2_cnt_len; /* Byte Length of ports at pm2_cnt_blk */
+ u8 pm_tmr_len; /* Byte Length of ports at pm_tm_blk */
+ u8 gpe0_blk_len; /* Byte Length of ports at gpe0_blk */
+ u8 gpe1_blk_len; /* Byte Length of ports at gpe1_blk */
+ u8 gpe1_base; /* Offset in gpe model where gpe1 events start */
+ u8 reserved3; /* Reserved */
+ u16 plvl2_lat; /* Worst case HW latency to enter/exit C2 state */
+ u16 plvl3_lat; /* Worst case HW latency to enter/exit C3 state */
+ u16 flush_size; /* Size of area read to flush caches */
+ u16 flush_stride; /* Stride used in flushing caches */
+ u8 duty_offset; /* Bit location of duty cycle field in p_cnt reg */
+ u8 duty_width; /* Bit width of duty cycle field in p_cnt reg */
+ u8 day_alrm; /* Index to day-of-month alarm in RTC CMOS RAM */
+ u8 mon_alrm; /* Index to month-of-year alarm in RTC CMOS RAM */
+ u8 century; /* Index to century in RTC CMOS RAM */
+ u8 reserved4; /* Reserved */
+ u8 reserved4a; /* Reserved */
+ u8 reserved4b; /* Reserved */
};
-struct facs_descriptor_rev1
-{
- u32 signature; /* ACPI Signature */
- u32 length; /* Length of structure, in bytes */
- u32 hardware_signature; /* Hardware configuration signature */
- u32 firmware_waking_vector; /* ACPI OS waking vector */
- u32 global_lock; /* Global Lock */
- u32 S4bios_f : 1; /* Indicates if S4BIOS support is present */
- u32 reserved1 : 31; /* Must be 0 */
- u8 reserved3 [40]; /* Reserved - must be zero */
+struct facs_descriptor_rev1 {
+ u32 signature; /* ACPI Signature */
+ u32 length; /* Length of structure, in bytes */
+ u32 hardware_signature; /* Hardware configuration signature */
+ u32 firmware_waking_vector; /* ACPI OS waking vector */
+ u32 global_lock; /* Global Lock */
+ u32 S4bios_f:1; /* Indicates if S4BIOS support is present */
+ u32 reserved1:31; /* Must be 0 */
+ u8 reserved3[40]; /* Reserved - must be zero */
};
void set_efi_rsdp(struct rsdp_descriptor *rsdp);
-void* find_acpi_table_addr(u32 sig);
+void *find_acpi_table_addr(u32 sig);
#endif
diff --git a/lib/acpi.c b/lib/acpi.c
index de275caf..836156a1 100644
--- a/lib/acpi.c
+++ b/lib/acpi.c
@@ -36,47 +36,45 @@ static struct rsdp_descriptor *get_rsdp(void)
}
#endif /* CONFIG_EFI */
-void* find_acpi_table_addr(u32 sig)
+void *find_acpi_table_addr(u32 sig)
{
- struct rsdp_descriptor *rsdp;
- struct rsdt_descriptor_rev1 *rsdt;
- void *end;
- int i;
+ struct rsdp_descriptor *rsdp;
+ struct rsdt_descriptor_rev1 *rsdt;
+ void *end;
+ int i;
- /* FACS is special... */
- if (sig == FACS_SIGNATURE) {
- struct fadt_descriptor_rev1 *fadt;
- fadt = find_acpi_table_addr(FACP_SIGNATURE);
- if (!fadt) {
- return NULL;
- }
- return (void*)(ulong)fadt->firmware_ctrl;
- }
+ /* FACS is special... */
+ if (sig == FACS_SIGNATURE) {
+ struct fadt_descriptor_rev1 *fadt;
+ fadt = find_acpi_table_addr(FACP_SIGNATURE);
+ if (!fadt)
+ return NULL;
- rsdp = get_rsdp();
- if (rsdp == NULL) {
- printf("Can't find RSDP\n");
- return 0;
- }
+ return (void *)(ulong) fadt->firmware_ctrl;
+ }
- if (sig == RSDP_SIGNATURE) {
- return rsdp;
- }
+ rsdp = get_rsdp();
+ if (rsdp == NULL) {
+ printf("Can't find RSDP\n");
+ return NULL;
+ }
- rsdt = (void*)(ulong)rsdp->rsdt_physical_address;
- if (!rsdt || rsdt->signature != RSDT_SIGNATURE)
- return 0;
+ if (sig == RSDP_SIGNATURE)
+ return rsdp;
- if (sig == RSDT_SIGNATURE) {
- return rsdt;
- }
+ rsdt = (void *)(ulong) rsdp->rsdt_physical_address;
+ if (!rsdt || rsdt->signature != RSDT_SIGNATURE)
+ return NULL;
+
+ if (sig == RSDT_SIGNATURE)
+ return rsdt;
- end = (void*)rsdt + rsdt->length;
- for (i=0; (void*)&rsdt->table_offset_entry[i] < end; i++) {
- struct acpi_table *t = (void*)(ulong)rsdt->table_offset_entry[i];
- if (t && t->signature == sig) {
- return t;
- }
- }
- return NULL;
+ end = (void *)rsdt + rsdt->length;
+ for (i = 0; (void *)&rsdt->table_offset_entry[i] < end; i++) {
+ struct acpi_table *t = (void *)(ulong) rsdt->table_offset_entry[i];
+ if (t && t->signature == sig) {
+ return t;
+ }
+ }
+ return NULL;
}
