[Qemu-devel] [RFC 43/47] acpi: add acpi_def_block() term

[Igor Mammedov <imammedo@redhat.com>]

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
 hw/acpi/acpi_gen_utils.c         | 46 ++++++++++++++++++++++++++++++++++++++++
 hw/i386/acpi-build.c             |  1 -
 include/hw/acpi/acpi_gen_utils.h |  8 +++++++
 3 files changed, 54 insertions(+), 1 deletion(-)

diff --git a/hw/acpi/acpi_gen_utils.c b/hw/acpi/acpi_gen_utils.c
index cc2fa03..583ceb3 100644
--- a/hw/acpi/acpi_gen_utils.c
+++ b/hw/acpi/acpi_gen_utils.c
@@ -287,6 +287,21 @@ void aml_append(AcpiAml *parent_ctx, AcpiAml child)
         build_prepend_int(child.buf, child.buf->len);
         build_package(child.buf, child.op);
         break;
+    case DEF_BLOCK: {
+        uint8_t *start = (uint8_t *)parent_ctx->buf->data +
+                         parent_ctx->buf->len;
+        uint32_t le32_len = cpu_to_le32(child.buf->len);
+
+        /* create linker entry for the DefinitionBlock */
+        bios_linker_loader_add_checksum(parent_ctx->linker,
+            ACPI_BUILD_TABLE_FILE,
+            parent_ctx->buf->data,
+            start, child.buf->len, start + 9 /* checksum offset */);
+
+        /* set DefinitionBlock length at TableLength offset*/
+        memcpy(child.buf->data + 4, &le32_len, sizeof le32_len);
+        break;
+    }
     default:
         break;
     }
@@ -818,3 +833,34 @@ AcpiAml acpi_qword_memory(acpiDecode dec, acpiMinFixed min_fixed,
                               dec, addr_gran, addr_min, addr_max,
                               addr_trans, len, flags);
 }
+
+/* ACPI 5.0: 20.2.1 Table and Table Header Encoding */
+AcpiAml acpi_def_block(const char *signature, uint8_t revision,
+                       const char *oem_id, const char *oem_table_id,
+                       uint32_t oem_revision)
+{
+    int len;
+    AcpiAml var = aml_allocate_internal(0, DEF_BLOCK);
+
+    assert(strlen(signature) == 4);
+    g_array_append_vals(var.buf, signature, 4);
+    build_append_value(var.buf, 0, 4); /* Length place holder */
+    build_append_byte(var.buf, revision);
+    build_append_byte(var.buf, 0); /* place holder for Checksum */
+
+    len = strlen(oem_id);
+    assert(len <= 6);
+    g_array_append_vals(var.buf, oem_id, len);
+    g_array_append_vals(var.buf, "\0\0\0\0\0\0\0\0", 6 - len);
+
+    len = strlen(oem_table_id);
+    assert(len <= 8);
+    g_array_append_vals(var.buf, oem_table_id, len);
+    g_array_append_vals(var.buf, "\0\0\0\0\0\0\0\0", 8 - len);
+
+    build_append_value(var.buf, oem_revision, 4);
+    g_array_append_vals(var.buf, ACPI_BUILD_APPNAME4, 4); /* asl_compiler_id */
+    build_append_value(var.buf, 1, 4); /* asl_compiler_revision */
+
+    return var;
+}
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index e0fa30a..3a22bdb 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -267,7 +267,6 @@ static void acpi_get_pci_info(PcPciInfo *info)
 #define ACPI_BUILD_APPNAME6 "BOCHS "
 #define ACPI_BUILD_APPNAME4 "BXPC"
 
-#define ACPI_BUILD_TABLE_FILE "etc/acpi/tables"
 #define ACPI_BUILD_RSDP_FILE "etc/acpi/rsdp"
 #define ACPI_BUILD_TPMLOG_FILE "etc/tpm/log"
 
diff --git a/include/hw/acpi/acpi_gen_utils.h b/include/hw/acpi/acpi_gen_utils.h
index 5e8db3d..868d439 100644
--- a/include/hw/acpi/acpi_gen_utils.h
+++ b/include/hw/acpi/acpi_gen_utils.h
@@ -11,12 +11,17 @@ typedef enum {
     EXT_PACKAGE,
     BUFFER,
     RES_TEMPLATE,
+    DEF_BLOCK,
 } AcpiBlockFlags;
 
+#define ACPI_BUILD_TABLE_FILE "etc/acpi/tables"
+#define ACPI_BUILD_APPNAME4 "BXPC"
+
 typedef struct AcpiAml {
     GArray *buf;
     uint8_t op;
     AcpiBlockFlags block_flags;
+    GArray *linker;
 } AcpiAml;
 
 typedef enum {
@@ -146,6 +151,9 @@ AcpiAml acpi_qword_memory(acpiDecode dec, acpiMinFixed min_fixed,
                           uint64_t len);
 
 /* Block ASL object primitives */
+AcpiAml acpi_def_block(const char *signature, uint8_t revision,
+                       const char *oem_id, const char *oem_table_id,
+                       uint32_t oem_revision);
 AcpiAml acpi_if(AcpiAml predicate);
 AcpiAml acpi_method(const char *name, int arg_count);
 AcpiAml GCC_FMT_ATTR(1, 2) acpi_scope(const char *name_format, ...);
-- 
1.8.3.1