diff options
| author | Simon Glass <sjg@chromium.org> | 2020-09-22 12:45:09 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2020-09-25 11:27:17 +0800 |
| commit | d2628984b7831b26d8f9ac25c966d6151df7a929 (patch) | |
| tree | 628e3deb8dbc93fec34c007b14a4d1fb064a084e /include/acpi | |
| parent | 6c0da2da7ca9f4bf75e384dc679bcb4575a9940e (diff) | |
| download | u-boot-d2628984b7831b26d8f9ac25c966d6151df7a929.tar.gz | |
x86: acpi: Support generation of the HPET table
Add an implementation of the HPET (High Precision Event Timer) ACPI
table. Since this is x86-specific, put it in an x86-specific file
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/acpi')
| -rw-r--r-- | include/acpi/acpi_table.h | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/include/acpi/acpi_table.h b/include/acpi/acpi_table.h index fe9b29f3f8..f8140446a5 100644 --- a/include/acpi/acpi_table.h +++ b/include/acpi/acpi_table.h @@ -20,6 +20,9 @@ #define OEM_TABLE_ID "U-BOOTBL" /* U-Boot Table */ #define ASLC_ID "INTL" /* Intel ASL Compiler */ +/* TODO(sjg@chromium.org): Figure out how to get compiler revision */ +#define ASL_REVISION 0 + #define ACPI_RSDP_REV_ACPI_1_0 0 #define ACPI_RSDP_REV_ACPI_2_0 2 @@ -56,6 +59,15 @@ struct __packed acpi_table_header { u32 aslc_revision; /* ASL compiler revision number */ }; +struct acpi_gen_regaddr { + u8 space_id; /* Address space ID */ + u8 bit_width; /* Register size in bits */ + u8 bit_offset; /* Register bit offset */ + u8 access_size; /* Access size */ + u32 addrl; /* Register address, low 32 bits */ + u32 addrh; /* Register address, high 32 bits */ +}; + /* A maximum number of 32 ACPI tables ought to be enough for now */ #define MAX_ACPI_TABLES 32 @@ -71,6 +83,16 @@ struct acpi_xsdt { u64 entry[MAX_ACPI_TABLES]; }; +/* HPET timers */ +struct __packed acpi_hpet { + struct acpi_table_header header; + u32 id; + struct acpi_gen_regaddr addr; + u8 number; + u16 min_tick; + u8 attributes; +}; + /* FADT Preferred Power Management Profile */ enum acpi_pm_profile { ACPI_PM_UNSPECIFIED = 0, @@ -138,15 +160,6 @@ enum acpi_address_space_size { ACPI_ACCESS_SIZE_QWORD_ACCESS }; -struct acpi_gen_regaddr { - u8 space_id; /* Address space ID */ - u8 bit_width; /* Register size in bits */ - u8 bit_offset; /* Register bit offset */ - u8 access_size; /* Access size */ - u32 addrl; /* Register address, low 32 bits */ - u32 addrh; /* Register address, high 32 bits */ -}; - /* FADT (Fixed ACPI Description Table) */ struct __packed acpi_fadt { struct acpi_table_header header; |