diff options
| author | Jonathan Zhang <jonzhang@fb.com> | 2020-01-27 11:38:57 -0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-01-30 11:44:00 +0000 |
| commit | 71299c274b09373e8776de55f245754cb48dbdaa (patch) | |
| tree | 29cf11c66bf46b907fafeb028febe3d958bc121d /src/arch | |
| parent | ea4d1246e84f5bd14b216a11bb6829b4d9e6f05d (diff) | |
arch/x86: add acpigen resource support
Add Word/DWord/QWord Address Space Descriptor helper functions.
Signed-off-by: Jonathan Zhang <jonzhang@fb.com>
Signed-off-by: Reddy Chagam <anjaneya.chagam@intel.com>
Change-Id: I707f8a443090b6f30e2940b721f9555ccdf49d32
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38594
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/x86/acpigen.c | 75 | ||||
| -rw-r--r-- | src/arch/x86/include/arch/acpigen.h | 9 |
2 files changed, 84 insertions, 0 deletions
diff --git a/src/arch/x86/acpigen.c b/src/arch/x86/acpigen.c index 2e6078358a..72605bb766 100644 --- a/src/arch/x86/acpigen.c +++ b/src/arch/x86/acpigen.c @@ -1758,3 +1758,78 @@ int acpigen_disable_tx_gpio(struct acpi_gpio *gpio) else return acpigen_soc_clear_tx_gpio(gpio->pins[0]); } + +/* refer to ACPI 6.4.3.5.3 Word Address Space Descriptor section for details */ +void acpigen_resource_word(u16 res_type, u16 gen_flags, u16 type_flags, u16 gran, + u16 range_min, u16 range_max, u16 translation, u16 length) +{ + acpigen_emit_byte(0x88); + /* Byte 1+2: length (0x000d) */ + acpigen_emit_byte(0x0d); + acpigen_emit_byte(0x00); + /* resource type */ + acpigen_emit_byte(res_type); // 0 - mem, 1 - io, 2 - bus + /* general flags */ + acpigen_emit_byte(gen_flags); + /* type flags */ + // refer to ACPI Table 6-234 (Memory), 6-235 (IO), 6-236 (Bus) for details + acpigen_emit_byte(type_flags); + /* granularity, min, max, translation, length */ + acpigen_emit_word(gran); + acpigen_emit_word(range_min); + acpigen_emit_word(range_max); + acpigen_emit_word(translation); + acpigen_emit_word(length); +} + +/* refer to ACPI 6.4.3.5.2 DWord Address Space Descriptor section for details */ +void acpigen_resource_dword(u16 res_type, u16 gen_flags, u16 type_flags, + u32 gran, u32 range_min, u32 range_max, u32 translation, u32 length) +{ + acpigen_emit_byte(0x87); + /* Byte 1+2: length (0023) */ + acpigen_emit_byte(23); + acpigen_emit_byte(0x00); + /* resource type */ + acpigen_emit_byte(res_type); // 0 - mem, 1 - io, 2 - bus + /* general flags */ + acpigen_emit_byte(gen_flags); + /* type flags */ + // refer to ACPI Table 6-234 (Memory), 6-235 (IO), 6-236 (Bus) for details + acpigen_emit_byte(type_flags); + /* granularity, min, max, translation, length */ + acpigen_emit_dword(gran); + acpigen_emit_dword(range_min); + acpigen_emit_dword(range_max); + acpigen_emit_dword(translation); + acpigen_emit_dword(length); +} + +static void acpigen_emit_qword(u64 data) +{ + acpigen_emit_dword(data & 0xffffffff); + acpigen_emit_dword((data >> 32) & 0xffffffff); +} + +/* refer to ACPI 6.4.3.5.1 QWord Address Space Descriptor section for details */ +void acpigen_resource_qword(u16 res_type, u16 gen_flags, u16 type_flags, + u64 gran, u64 range_min, u64 range_max, u64 translation, u64 length) +{ + acpigen_emit_byte(0x8a); + /* Byte 1+2: length (0x002b) */ + acpigen_emit_byte(0x2b); + acpigen_emit_byte(0x00); + /* resource type */ + acpigen_emit_byte(res_type); // 0 - mem, 1 - io, 2 - bus + /* general flags */ + acpigen_emit_byte(gen_flags); + /* type flags */ + // refer to ACPI Table 6-234 (Memory), 6-235 (IO), 6-236 (Bus) for details + acpigen_emit_byte(type_flags); + /* granularity, min, max, translation, length */ + acpigen_emit_qword(gran); + acpigen_emit_qword(range_min); + acpigen_emit_qword(range_max); + acpigen_emit_qword(translation); + acpigen_emit_qword(length); +} diff --git a/src/arch/x86/include/arch/acpigen.h b/src/arch/x86/include/arch/acpigen.h index 6317091512..08075585ca 100644 --- a/src/arch/x86/include/arch/acpigen.h +++ b/src/arch/x86/include/arch/acpigen.h @@ -472,4 +472,13 @@ int acpigen_soc_clear_tx_gpio(unsigned int gpio_num); int acpigen_enable_tx_gpio(struct acpi_gpio *gpio); int acpigen_disable_tx_gpio(struct acpi_gpio *gpio); +/* refer to ACPI 6.4.3.5.3 Word Address Space Descriptor section for details */ +void acpigen_resource_word(u16 res_type, u16 gen_flags, u16 type_flags, u16 gran, + u16 range_min, u16 range_max, u16 translation, u16 length); +/* refer to ACPI 6.4.3.5.2 DWord Address Space Descriptor section for details */ +void acpigen_resource_dword(u16 res_type, u16 gen_flags, u16 type_flags, + u32 gran, u32 range_min, u32 range_max, u32 translation, u32 length); +/* refer to ACPI 6.4.3.5.1 QWord Address Space Descriptor section for details */ +void acpigen_resource_qword(u16 res_type, u16 gen_flags, u16 type_flags, + u64 gran, u64 range_min, u64 range_max, u64 translation, u64 length); #endif |