[Qemu-devel] [PATCH v5 06/24] hw: acpi: Factorize the RSDP build API implementation

[Samuel Ortiz <sameo@linux.intel.com>]

We can now share the RSDP build between the ARM and x86 architectures.
Here we make the default RSDP build use XSDT and keep the existing x86
ACPI build implementation using the legacy RSDT version.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
---
 include/hw/acpi/aml-build.h |  8 ++++----
 hw/acpi/aml-build.c         | 28 +++++++++++++++++++++++++---
 hw/arm/virt-acpi-build.c    | 28 ----------------------------
 hw/i386/acpi-build.c        | 26 +-------------------------
 4 files changed, 30 insertions(+), 60 deletions(-)

diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index 3580d0ce90..a2ef8b6f31 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -390,11 +390,11 @@ void acpi_add_table(GArray *table_offsets, GArray *table_data);
 void acpi_build_tables_init(AcpiBuildTables *tables);
 void acpi_build_tables_cleanup(AcpiBuildTables *tables, bool mfre);
 void
-build_rsdp(GArray *table_data,
-           BIOSLinker *linker, unsigned rsdt_tbl_offset);
+build_rsdp_rsdt(GArray *table_data,
+                BIOSLinker *linker, unsigned rsdt_tbl_offset);
 void
-build_rsdp_xsdt(GArray *table_data,
-                BIOSLinker *linker, unsigned xsdt_tbl_offset);
+build_rsdp(GArray *table_data,
+           BIOSLinker *linker, unsigned xsdt_tbl_offset);
 void
 build_rsdt(GArray *table_data, BIOSLinker *linker, GArray *table_offsets,
            const char *oem_id, const char *oem_table_id);
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index a030d40674..8c2388274c 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -1651,10 +1651,32 @@ build_xsdt(GArray *table_data, BIOSLinker *linker, GArray *table_offsets,
                  (void *)xsdt, "XSDT", xsdt_len, 1, oem_id, oem_table_id);
 }
 
+/* Legacy RSDP pointing at an RSDT. This is deprecated */
+void build_rsdp_rsdt(GArray *rsdp_table, BIOSLinker *linker, unsigned rsdt_tbl_offset)
+{
+    AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
+    unsigned rsdt_pa_size = sizeof(rsdp->rsdt_physical_address);
+    unsigned rsdt_pa_offset =
+        (char *)&rsdp->rsdt_physical_address - rsdp_table->data;
+
+    bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, rsdp_table, 16,
+                             true /* fseg memory */);
+
+    memcpy(&rsdp->signature, "RSD PTR ", 8);
+    memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, 6);
+    /* Address to be filled by Guest linker */
+    bios_linker_loader_add_pointer(linker,
+        ACPI_BUILD_RSDP_FILE, rsdt_pa_offset, rsdt_pa_size,
+        ACPI_BUILD_TABLE_FILE, rsdt_tbl_offset);
+
+    /* Checksum to be filled by Guest linker */
+    bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,
+        (char *)rsdp - rsdp_table->data, sizeof *rsdp,
+        (char *)&rsdp->checksum - rsdp_table->data);
+}
+
 /* RSDP pointing at an XSDT */
-void
-build_rsdp_xsdt(GArray *rsdp_table,
-                BIOSLinker *linker, unsigned xsdt_tbl_offset)
+void build_rsdp(GArray *rsdp_table, BIOSLinker *linker, unsigned xsdt_tbl_offset)
 {
     AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
     unsigned xsdt_pa_size = sizeof(rsdp->xsdt_physical_address);
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index 623a6c4eac..261363e20c 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -366,34 +366,6 @@ static void acpi_dsdt_add_power_button(Aml *scope)
     aml_append(scope, dev);
 }
 
-/* RSDP */
-void
-build_rsdp(GArray *rsdp_table, BIOSLinker *linker, unsigned xsdt_tbl_offset)
-{
-    AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
-    unsigned xsdt_pa_size = sizeof(rsdp->xsdt_physical_address);
-    unsigned xsdt_pa_offset =
-        (char *)&rsdp->xsdt_physical_address - rsdp_table->data;
-
-    bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, rsdp_table, 16,
-                             true /* fseg memory */);
-
-    memcpy(&rsdp->signature, "RSD PTR ", sizeof(rsdp->signature));
-    memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, sizeof(rsdp->oem_id));
-    rsdp->length = cpu_to_le32(sizeof(*rsdp));
-    rsdp->revision = 0x02;
-
-    /* Address to be filled by Guest linker */
-    bios_linker_loader_add_pointer(linker,
-        ACPI_BUILD_RSDP_FILE, xsdt_pa_offset, xsdt_pa_size,
-        ACPI_BUILD_TABLE_FILE, xsdt_tbl_offset);
-
-    /* Checksum to be filled by Guest linker */
-    bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,
-        (char *)rsdp - rsdp_table->data, sizeof *rsdp,
-        (char *)&rsdp->checksum - rsdp_table->data);
-}
-
 static void
 build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
 {
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index f7a67f5c9c..cfc2444d0d 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -2513,30 +2513,6 @@ build_amd_iommu(GArray *table_data, BIOSLinker *linker)
                  "IVRS", table_data->len - iommu_start, 1, NULL, NULL);
 }
 
-void
-build_rsdp(GArray *rsdp_table, BIOSLinker *linker, unsigned rsdt_tbl_offset)
-{
-    AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
-    unsigned rsdt_pa_size = sizeof(rsdp->rsdt_physical_address);
-    unsigned rsdt_pa_offset =
-        (char *)&rsdp->rsdt_physical_address - rsdp_table->data;
-
-    bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, rsdp_table, 16,
-                             true /* fseg memory */);
-
-    memcpy(&rsdp->signature, "RSD PTR ", 8);
-    memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, 6);
-    /* Address to be filled by Guest linker */
-    bios_linker_loader_add_pointer(linker,
-        ACPI_BUILD_RSDP_FILE, rsdt_pa_offset, rsdt_pa_size,
-        ACPI_BUILD_TABLE_FILE, rsdt_tbl_offset);
-
-    /* Checksum to be filled by Guest linker */
-    bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,
-        (char *)rsdp - rsdp_table->data, sizeof *rsdp,
-        (char *)&rsdp->checksum - rsdp_table->data);
-}
-
 static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg)
 {
     Object *pci_host;
@@ -2681,7 +2657,7 @@ void acpi_build(AcpiBuildTables *tables,
                slic_oem.id, slic_oem.table_id);
 
     /* RSDP is in FSEG memory, so allocate it separately */
-    build_rsdp(tables->rsdp, tables->linker, rsdt);
+    build_rsdp_rsdt(tables->rsdp, tables->linker, rsdt);
 
     /* We'll expose it all to Guest so we want to reduce
      * chance of size changes.
-- 
2.19.1