From b36e60614f9c4a6eb3f417422c3cb99402b82963 Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Wed, 11 May 2016 12:33:44 +0200
Subject: [PATCH 05/10] acpi: support specified oem table id for build_header

RH-Author: Laszlo Ersek <lersek@redhat.com>
Message-id: <1462970028-10959-4-git-send-email-lersek@redhat.com>
Patchwork-id: 70380
O-Subject: [RHEL-7.3 qemu-kvm PATCH v2 3/7] acpi: support specified oem table id for build_header
Bugzilla: 1330969
RH-Acked-by: Igor Mammedov <imammedo@redhat.com>
RH-Acked-by: Michael S. Tsirkin <mst@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>

From: Xiao Guangrong <guangrong.xiao@linux.intel.com>

Let build_header() support specified OEM table id so that we can build
multiple SSDT later

If the oem table id is not specified (aka, NULL), we use the default id
instead as the previous behavior

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 8870ca0e94f2524644812dd759863c0851ffb870)
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>

Conflicts:
	hw/acpi/aml-build.c
	hw/arm/virt-acpi-build.c
	hw/i386/acpi-build.c
	include/hw/acpi/aml-build.h

RHEL-7 backport note: this is actually a manual reimplementation of the
upstream patch, which is mostly mechanic. A clean cherry-pick would depend
on a lot of reorganizatorial upstream patches (e.g., 658c27181bf3
("hw/i386/acpi-build: move generic acpi building helpers into dedictated
file")), and many new features that overlap with ACPI generation (e.g.,
the "virt" machtype of the arm/aarch64 targets).

Signed-off-by: Laszlo Ersek <lersek@redhat.com>
---
 hw/i386/acpi-build.c | 29 ++++++++++++++++++-----------
 1 file changed, 18 insertions(+), 11 deletions(-)
---
 hw/i386/acpi-build.c | 29 ++++++++++++++++++-----------
 1 file changed, 18 insertions(+), 11 deletions(-)

diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index be32bc3..a9d9f97 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -243,14 +243,21 @@ static void acpi_get_pci_info(PcPciInfo *info)
 
 static void
 build_header(GArray *linker, GArray *table_data,
-             AcpiTableHeader *h, const char *sig, int len, uint8_t rev)
+             AcpiTableHeader *h, const char *sig, int len, uint8_t rev,
+             const char *oem_table_id)
 {
     memcpy(&h->signature, sig, 4);
     h->length = cpu_to_le32(len);
     h->revision = rev;
     memcpy(h->oem_id, ACPI_BUILD_APPNAME6, 6);
-    memcpy(h->oem_table_id, ACPI_BUILD_APPNAME4, 4);
-    memcpy(h->oem_table_id + 4, sig, 4);
+
+    if (oem_table_id) {
+        strncpy((char *)h->oem_table_id, oem_table_id, sizeof(h->oem_table_id));
+    } else {
+        memcpy(h->oem_table_id, ACPI_BUILD_APPNAME4, 4);
+        memcpy(h->oem_table_id + 4, sig, 4);
+    }
+
     h->oem_revision = cpu_to_le32(1);
     memcpy(h->asl_compiler_id, ACPI_BUILD_APPNAME4, 4);
     h->asl_compiler_revision = cpu_to_le32(1);
@@ -520,7 +527,7 @@ build_fadt(GArray *table_data, GArray *linker, AcpiPmInfo *pm,
     fadt_setup(fadt, pm);
 
     build_header(linker, table_data,
-                 (void *)fadt, "FACP", sizeof(*fadt), 1);
+                 (void *)fadt, "FACP", sizeof(*fadt), 1, NULL);
 }
 
 static void
@@ -590,7 +597,7 @@ build_madt(GArray *table_data, GArray *linker, AcpiCpuInfo *cpu,
 
     build_header(linker, table_data,
                  (void *)(table_data->data + madt_start), "APIC",
-                 table_data->len - madt_start, 1);
+                 table_data->len - madt_start, 1, NULL);
 }
 
 /* Encode a hex value */
@@ -782,7 +789,7 @@ build_ssdt(GArray *table_data, GArray *linker,
 
     build_header(linker, table_data,
                  (void *)(table_data->data + ssdt_start),
-                 "SSDT", table_data->len - ssdt_start, 1);
+                 "SSDT", table_data->len - ssdt_start, 1, NULL);
 }
 
 static void
@@ -797,7 +804,7 @@ build_hpet(GArray *table_data, GArray *linker)
     hpet->timer_block_id = cpu_to_le32(0x8086a201);
     hpet->addr.address = cpu_to_le64(HPET_BASE);
     build_header(linker, table_data,
-                 (void *)hpet, "HPET", sizeof(*hpet), 1);
+                 (void *)hpet, "HPET", sizeof(*hpet), 1, NULL);
 }
 
 static void
@@ -890,7 +897,7 @@ build_srat(GArray *table_data, GArray *linker,
     build_header(linker, table_data,
                  (void *)(table_data->data + srat_start),
                  "SRAT",
-                 table_data->len - srat_start, 1);
+                 table_data->len - srat_start, 1, NULL);
 }
 
 static void
@@ -919,7 +926,7 @@ build_mcfg_q35(GArray *table_data, GArray *linker, AcpiMcfgInfo *info)
     } else {
         sig = "MCFG";
     }
-    build_header(linker, table_data, (void *)mcfg, sig, len, 1);
+    build_header(linker, table_data, (void *)mcfg, sig, len, 1, NULL);
 }
 
 static void
@@ -934,7 +941,7 @@ build_dsdt(GArray *table_data, GArray *linker, AcpiMiscInfo *misc)
 
     memset(dsdt, 0, sizeof *dsdt);
     build_header(linker, table_data, dsdt, "DSDT",
-                 misc->dsdt_size, 1);
+                 misc->dsdt_size, 1, NULL);
 }
 
 /* Build final rsdt table */
@@ -958,7 +965,7 @@ build_rsdt(GArray *table_data, GArray *linker, GArray *table_offsets)
                                        sizeof(uint32_t));
     }
     build_header(linker, table_data,
-                 (void *)rsdt, "RSDT", rsdt_len, 1);
+                 (void *)rsdt, "RSDT", rsdt_len, 1, NULL);
 }
 
 static GArray *
-- 
1.8.3.1