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| author | Yanan Wang <wangyanan55@huawei.com> | 2021-10-20 22:21:21 +0800 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2021-10-20 18:17:54 -0700 |
| commit | 9de36ef87270b669219b973362a948347ab382f4 (patch) | |
| tree | 48065adcb181c86a62b8b614ce7362e76a127903 /hw/acpi/aml-build.c | |
| parent | 72b0527ff6ab09502e0b320050eb086fc4d61d26 (diff) | |
| download | focaccia-qemu-9de36ef87270b669219b973362a948347ab382f4.tar.gz focaccia-qemu-9de36ef87270b669219b973362a948347ab382f4.zip | |
hw/acpi/aml-build: Add Processor hierarchy node structure
Add a generic API to build Processor hierarchy node structure (Type 0), which is strictly consistent with descriptions in ACPI 6.3: 5.2.29.1. This function will be used to build ACPI PPTT table for cpu topology. Co-developed-by: Ying Fang <fangying1@huawei.com> Co-developed-by: Henglong Fan <fanhenglong@huawei.com> Co-developed-by: Yanan Wang <wangyanan55@huawei.com> Signed-off-by: Yanan Wang <wangyanan55@huawei.com> Reviewed-by: Andrew Jones <drjones@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Message-Id: <20211020142125.7516-5-wangyanan55@huawei.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'hw/acpi/aml-build.c')
| -rw-r--r-- | hw/acpi/aml-build.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c index 76af0ebaf9..5195324585 100644 --- a/hw/acpi/aml-build.c +++ b/hw/acpi/aml-build.c @@ -1964,6 +1964,36 @@ void build_slit(GArray *table_data, BIOSLinker *linker, MachineState *ms, acpi_table_end(linker, &table); } +/* + * ACPI spec, Revision 6.3 + * 5.2.29.1 Processor hierarchy node structure (Type 0) + */ +static void build_processor_hierarchy_node(GArray *tbl, uint32_t flags, + uint32_t parent, uint32_t id, + uint32_t *priv_rsrc, + uint32_t priv_num) +{ + int i; + + build_append_byte(tbl, 0); /* Type 0 - processor */ + build_append_byte(tbl, 20 + priv_num * 4); /* Length */ + build_append_int_noprefix(tbl, 0, 2); /* Reserved */ + build_append_int_noprefix(tbl, flags, 4); /* Flags */ + build_append_int_noprefix(tbl, parent, 4); /* Parent */ + build_append_int_noprefix(tbl, id, 4); /* ACPI Processor ID */ + + /* Number of private resources */ + build_append_int_noprefix(tbl, priv_num, 4); + + /* Private resources[N] */ + if (priv_num > 0) { + assert(priv_rsrc); + for (i = 0; i < priv_num; i++) { + build_append_int_noprefix(tbl, priv_rsrc[i], 4); + } + } +} + /* build rev1/rev3/rev5.1 FADT */ void build_fadt(GArray *tbl, BIOSLinker *linker, const AcpiFadtData *f, const char *oem_id, const char *oem_table_id) |