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authorArthur Heymans <arthur@aheymans.xyz>2023-06-20 10:17:23 +0200
committerLean Sheng Tan <sheng.tan@9elements.com>2023-07-20 10:39:53 +0000
commit8193eabd8df2ba4760e425ca6946983808a64301 (patch)
tree7df4e795114a0e6bf75018bf2e05ba76d7714057 /src/include
parenta9a92ac961f8f46b7cdca2176428d5e363f44912 (diff)
acpi: Add GTDT structs
Copied from Linux kernel. Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Change-Id: I09f84e63346a270f1c7b77e8088b114800ff4864 Reviewed-on: https://review.coreboot.org/c/coreboot/+/75923 Reviewed-by: Tim Wawrzynczak <inforichland@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/include')
-rw-r--r--src/include/acpi/acpi.h97
1 files changed, 97 insertions, 0 deletions
diff --git a/src/include/acpi/acpi.h b/src/include/acpi/acpi.h
index 69bc00eefc..60efbdba2f 100644
--- a/src/include/acpi/acpi.h
+++ b/src/include/acpi/acpi.h
@@ -1337,6 +1337,103 @@ _Static_assert(sizeof(acpi_spcr_t) == 88, "acpi_spcr_t must have an 88 byte size
#define ARMH_GIC_COMPATIBLE_INTERRUPT (1 << 3)
#define RISCV_PLIC_COMPATIBLE_INTERRUPT (1 << 4)
+/* GTDT - Generic Timer Description Table (ACPI 5.1) Version 2 */
+typedef struct acpi_table_gtdt {
+ acpi_header_t header; /* Common ACPI table header */
+ u64 counter_block_addresss;
+ u32 reserved;
+ u32 secure_el1_interrupt;
+ u32 secure_el1_flags;
+ u32 non_secure_el1_interrupt;
+ u32 non_secure_el1_flags;
+ u32 virtual_timer_interrupt;
+ u32 virtual_timer_flags;
+ u32 non_secure_el2_interrupt;
+ u32 non_secure_el2_flags;
+ u64 counter_read_block_address;
+ u32 platform_timer_count;
+ u32 platform_timer_offset;
+} __packed acpi_gtdt_t;
+
+/* Flag Definitions: Timer Block Physical Timers and Virtual timers */
+
+#define ACPI_GTDT_INTERRUPT_MODE (1)
+#define ACPI_GTDT_INTERRUPT_POLARITY (1<<1)
+#define ACPI_GTDT_ALWAYS_ON (1<<2)
+
+struct acpi_gtdt_el2 {
+ u32 virtual_el2_timer_gsiv;
+ u32 virtual_el2_timer_flags;
+};
+
+/* Common GTDT subtable header */
+
+struct acpi_gtdt_header {
+ u8 type;
+ u16 length;
+} __packed;
+
+/* Values for GTDT subtable type above */
+
+enum acpi_gtdt_type {
+ ACPI_GTDT_TYPE_TIMER_BLOCK = 0,
+ ACPI_GTDT_TYPE_WATCHDOG = 1,
+ ACPI_GTDT_TYPE_RESERVED = 2 /* 2 and greater are reserved */
+};
+
+/* GTDT Subtables, correspond to Type in struct acpi_gtdt_header */
+
+/* 0: Generic Timer Block */
+
+struct acpi_gtdt_timer_block {
+ struct acpi_gtdt_header header;
+ u8 reserved;
+ u64 block_address;
+ u32 timer_count;
+ u32 timer_offset;
+} __packed;
+
+/* Timer Sub-Structure, one per timer */
+
+struct acpi_gtdt_timer_entry {
+ u8 frame_number;
+ u8 reserved[3];
+ u64 base_address;
+ u64 el0_base_address;
+ u32 timer_interrupt;
+ u32 timer_flags;
+ u32 virtual_timer_interrupt;
+ u32 virtual_timer_flags;
+ u32 common_flags;
+} __packed;
+
+/* Flag Definitions: timer_flags and virtual_timer_flags above */
+
+#define ACPI_GTDT_GT_IRQ_MODE (1)
+#define ACPI_GTDT_GT_IRQ_POLARITY (1<<1)
+
+/* Flag Definitions: common_flags above */
+
+#define ACPI_GTDT_GT_IS_SECURE_TIMER (1)
+#define ACPI_GTDT_GT_ALWAYS_ON (1<<1)
+
+/* 1: SBSA Generic Watchdog Structure */
+
+struct acpi_gtdt_watchdog {
+ struct acpi_gtdt_header header;
+ u8 reserved;
+ u64 refresh_frame_address;
+ u64 control_frame_address;
+ u32 timer_interrupt;
+ u32 timer_flags;
+} __packed;
+
+/* Flag Definitions: timer_flags above */
+
+#define ACPI_GTDT_WATCHDOG_IRQ_MODE (1)
+#define ACPI_GTDT_WATCHDOG_IRQ_POLARITY (1<<1)
+#define ACPI_GTDT_WATCHDOG_SECURE (1<<2)
+
uintptr_t get_coreboot_rsdp(void);
void acpi_create_einj(acpi_einj_t *einj, uintptr_t addr, u8 actions);