acpi: convert linker from GArray to BIOSLinker structure

Patch just changes type of of linker variables to
a structure, there aren't any functional changes.

Converting linker to a structure will allow to extend
it functionality in follow up patch adding sanity blob
checks.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

hw/acpi/aml-build.c

@@ -24,7 +24,6 @@
 #include "hw/acpi/aml-build.h"
 #include "qemu/bswap.h"
 #include "qemu/bitops.h"
-#include "hw/acpi/bios-linker-loader.h"
 
 static GArray *build_alloc_array(void)
 {
@@ -1490,7 +1489,7 @@ Aml *aml_concatenate(Aml *source1, Aml *source2, Aml *target)
 }
 
 void
-build_header(GArray *linker, GArray *table_data,
+build_header(BIOSLinker *linker, GArray *table_data,
              AcpiTableHeader *h, const char *sig, int len, uint8_t rev,
              const char *oem_id, const char *oem_table_id)
 {
@@ -1558,7 +1557,7 @@ void acpi_build_tables_cleanup(AcpiBuildTables *tables, bool mfre)
 
 /* Build rsdt table */
 void
-build_rsdt(GArray *table_data, GArray *linker, GArray *table_offsets,
+build_rsdt(GArray *table_data, BIOSLinker *linker, GArray *table_offsets,
            const char *oem_id, const char *oem_table_id)
 {
     AcpiRsdtDescriptorRev1 *rsdt;

hw/acpi/bios-linker-loader.c

@@ -96,33 +96,39 @@ enum {
 };
 
 /*
- * bios_linker_loader_init: allocate a new linker file blob array.
+ * bios_linker_loader_init: allocate a new linker object instance.
  *
  * After initialization, linker commands can be added, and will
- * be stored in the array.
+ * be stored in the linker.cmd_blob array.
  */
-GArray *bios_linker_loader_init(void)
+BIOSLinker *bios_linker_loader_init(void)
 {
-    return g_array_new(false, true /* clear */, 1);
+    BIOSLinker *linker = g_new(BIOSLinker, 1);
+
+    linker->cmd_blob = g_array_new(false, true /* clear */, 1);
+    return linker;
 }
 
-/* Free linker wrapper and return the linker array. */
-void *bios_linker_loader_cleanup(GArray *linker)
+/* Free linker wrapper and return the linker commands array. */
+void *bios_linker_loader_cleanup(BIOSLinker *linker)
 {
-    return g_array_free(linker, false);
+    void *cmd_blob = g_array_free(linker->cmd_blob, false);
+
+    g_free(linker);
+    return cmd_blob;
 }
 
 /*
  * bios_linker_loader_alloc: ask guest to load file into guest memory.
  *
- * @linker: linker file blob array
- * @file: file to be loaded
+ * @linker: linker object instance
+ * @file: name of the file blob to be loaded
  * @alloc_align: required minimal alignment in bytes. Must be a power of 2.
  * @alloc_fseg: request allocation in FSEG zone (useful for the RSDP ACPI table)
  *
  * Note: this command must precede any other linker command using this file.
  */
-void bios_linker_loader_alloc(GArray *linker,
+void bios_linker_loader_alloc(BIOSLinker *linker,
                               const char *file,
                               uint32_t alloc_align,
                               bool alloc_fseg)
@@ -139,7 +145,7 @@ void bios_linker_loader_alloc(GArray *linker,
                                     BIOS_LINKER_LOADER_ALLOC_ZONE_HIGH;
 
     /* Alloc entries must come first, so prepend them */
-    g_array_prepend_vals(linker, &entry, sizeof entry);
+    g_array_prepend_vals(linker->cmd_blob, &entry, sizeof entry);
 }
 
 /*
@@ -149,7 +155,7 @@ void bios_linker_loader_alloc(GArray *linker,
  * Checksum calculation simply sums -X for each byte X in the range
  * using 8-bit math (i.e. ACPI checksum).
  *
- * @linker: linker file blob array
+ * @linker: linker object instance
  * @file: file that includes the checksum to be calculated
  *        and the data to be checksummed
  * @table: @file blob contents
@@ -167,7 +173,7 @@ void bios_linker_loader_alloc(GArray *linker,
  * - To avoid confusion, caller must always put 0x0 at @checksum.
  * - @file must be loaded into Guest memory using bios_linker_loader_alloc
  */
-void bios_linker_loader_add_checksum(GArray *linker, const char *file,
+void bios_linker_loader_add_checksum(BIOSLinker *linker, const char *file,
                                      GArray *table,
                                      void *start, unsigned size,
                                      uint8_t *checksum)
@@ -189,14 +195,14 @@ void bios_linker_loader_add_checksum(GArray *linker, const char *file,
     entry.cksum.start = cpu_to_le32(start_offset);
     entry.cksum.length = cpu_to_le32(size);
 
-    g_array_append_vals(linker, &entry, sizeof entry);
+    g_array_append_vals(linker->cmd_blob, &entry, sizeof entry);
 }
 
 /*
  * bios_linker_loader_add_pointer: ask guest to add address of source file
  * into destination file at the specified pointer.
  *
- * @linker: linker file blob array
+ * @linker: linker object instance
  * @dest_file: destination file that must be changed
  * @src_file: source file who's address must be taken
  * @table: @dest_file blob contents array
@@ -213,7 +219,7 @@ void bios_linker_loader_add_checksum(GArray *linker, const char *file,
  * - Both @dest_file and @src_file must be
  *   loaded into Guest memory using bios_linker_loader_alloc
  */
-void bios_linker_loader_add_pointer(GArray *linker,
+void bios_linker_loader_add_pointer(BIOSLinker *linker,
                                     const char *dest_file,
                                     const char *src_file,
                                     GArray *table, void *pointer,
@@ -236,5 +242,5 @@ void bios_linker_loader_add_pointer(GArray *linker,
     assert(pointer_size == 1 || pointer_size == 2 ||
            pointer_size == 4 || pointer_size == 8);
 
-    g_array_append_vals(linker, &entry, sizeof entry);
+    g_array_append_vals(linker->cmd_blob, &entry, sizeof entry);
 }

hw/acpi/nvdimm.c

@@ -353,7 +353,7 @@ static GArray *nvdimm_build_device_structure(GSList *device_list)
 }
 
 static void nvdimm_build_nfit(GSList *device_list, GArray *table_offsets,
-                              GArray *table_data, GArray *linker)
+                              GArray *table_data, BIOSLinker *linker)
 {
     GArray *structures = nvdimm_build_device_structure(device_list);
     unsigned int header;
@@ -579,7 +579,7 @@ static void nvdimm_build_nvdimm_devices(GSList *device_list, Aml *root_dev)
 }
 
 static void nvdimm_build_ssdt(GSList *device_list, GArray *table_offsets,
-                              GArray *table_data, GArray *linker)
+                              GArray *table_data, BIOSLinker *linker)
 {
     Aml *ssdt, *sb_scope, *dev, *field;
     int mem_addr_offset, nvdimm_ssdt;
@@ -691,7 +691,7 @@ static void nvdimm_build_ssdt(GSList *device_list, GArray *table_offsets,
 }
 
 void nvdimm_build_acpi(GArray *table_offsets, GArray *table_data,
-                       GArray *linker)
+                       BIOSLinker *linker)
 {
     GSList *device_list;
 

hw/arm/virt-acpi-build.c

@@ -354,7 +354,7 @@ static void acpi_dsdt_add_power_button(Aml *scope)
 
 /* RSDP */
 static GArray *
-build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt)
+build_rsdp(GArray *rsdp_table, BIOSLinker *linker, unsigned rsdt)
 {
     AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
 
@@ -383,7 +383,7 @@ build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt)
 }
 
 static void
-build_spcr(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
+build_spcr(GArray *table_data, BIOSLinker *linker, VirtGuestInfo *guest_info)
 {
     AcpiSerialPortConsoleRedirection *spcr;
     const MemMapEntry *uart_memmap = &guest_info->memmap[VIRT_UART];
@@ -416,7 +416,7 @@ build_spcr(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
 }
 
 static void
-build_srat(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
+build_srat(GArray *table_data, BIOSLinker *linker, VirtGuestInfo *guest_info)
 {
     AcpiSystemResourceAffinityTable *srat;
     AcpiSratProcessorGiccAffinity *core;
@@ -456,13 +456,12 @@ build_srat(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
         mem_base += numa_info[i].node_mem;
     }
 
-    build_header(linker, table_data,
-                 (void *)(table_data->data + srat_start), "SRAT",
+    build_header(linker, table_data, (void *)srat, "SRAT",
                  table_data->len - srat_start, 3, NULL, NULL);
 }
 
 static void
-build_mcfg(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
+build_mcfg(GArray *table_data, BIOSLinker *linker, VirtGuestInfo *guest_info)
 {
     AcpiTableMcfg *mcfg;
     const MemMapEntry *memmap = guest_info->memmap;
@@ -482,7 +481,7 @@ build_mcfg(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
 
 /* GTDT */
 static void
-build_gtdt(GArray *table_data, GArray *linker)
+build_gtdt(GArray *table_data, BIOSLinker *linker)
 {
     int gtdt_start = table_data->len;
     AcpiGenericTimerTable *gtdt;
@@ -508,7 +507,7 @@ build_gtdt(GArray *table_data, GArray *linker)
 
 /* MADT */
 static void
-build_madt(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
+build_madt(GArray *table_data, BIOSLinker *linker, VirtGuestInfo *guest_info)
 {
     int madt_start = table_data->len;
     const MemMapEntry *memmap = guest_info->memmap;
@@ -567,7 +566,7 @@ build_madt(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
 
 /* FADT */
 static void
-build_fadt(GArray *table_data, GArray *linker, unsigned dsdt)
+build_fadt(GArray *table_data, BIOSLinker *linker, unsigned dsdt)
 {
     AcpiFadtDescriptorRev5_1 *fadt = acpi_data_push(table_data, sizeof(*fadt));
 
@@ -592,7 +591,7 @@ build_fadt(GArray *table_data, GArray *linker, unsigned dsdt)
 
 /* DSDT */
 static void
-build_dsdt(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
+build_dsdt(GArray *table_data, BIOSLinker *linker, VirtGuestInfo *guest_info)
 {
     Aml *scope, *dsdt;
     const MemMapEntry *memmap = guest_info->memmap;
@@ -731,7 +730,7 @@ static void virt_acpi_build_update(void *build_opaque)
 
     acpi_ram_update(build_state->table_mr, tables.table_data);
     acpi_ram_update(build_state->rsdp_mr, tables.rsdp);
-    acpi_ram_update(build_state->linker_mr, tables.linker);
+    acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob);
 
 
     acpi_build_tables_cleanup(&tables, true);
@@ -789,7 +788,8 @@ void virt_acpi_setup(VirtGuestInfo *guest_info)
     assert(build_state->table_mr != NULL);
 
     build_state->linker_mr =
-        acpi_add_rom_blob(build_state, tables.linker, "etc/table-loader", 0);
+        acpi_add_rom_blob(build_state, tables.linker->cmd_blob,
+                          "etc/table-loader", 0);
 
     fw_cfg_add_file(guest_info->fw_cfg, ACPI_BUILD_TPMLOG_FILE,
                     tables.tcpalog->data, acpi_data_len(tables.tcpalog));

hw/i386/acpi-build.c

@@ -260,7 +260,7 @@ static void acpi_align_size(GArray *blob, unsigned align)
 
 /* FACS */
 static void
-build_facs(GArray *table_data, GArray *linker)
+build_facs(GArray *table_data, BIOSLinker *linker)
 {
     AcpiFacsDescriptorRev1 *facs = acpi_data_push(table_data, sizeof *facs);
     memcpy(&facs->signature, "FACS", 4);
@@ -305,7 +305,7 @@ static void fadt_setup(AcpiFadtDescriptorRev1 *fadt, AcpiPmInfo *pm)
 
 /* FADT */
 static void
-build_fadt(GArray *table_data, GArray *linker, AcpiPmInfo *pm,
+build_fadt(GArray *table_data, BIOSLinker *linker, AcpiPmInfo *pm,
            unsigned facs, unsigned dsdt,
            const char *oem_id, const char *oem_table_id)
 {
@@ -332,7 +332,7 @@ build_fadt(GArray *table_data, GArray *linker, AcpiPmInfo *pm,
 }
 
 static void
-build_madt(GArray *table_data, GArray *linker, PCMachineState *pcms)
+build_madt(GArray *table_data, BIOSLinker *linker, PCMachineState *pcms)
 {
     MachineClass *mc = MACHINE_GET_CLASS(pcms);
     CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(pcms));
@@ -1869,7 +1869,7 @@ static Aml *build_q35_osc_method(void)
 }
 
 static void
-build_dsdt(GArray *table_data, GArray *linker,
+build_dsdt(GArray *table_data, BIOSLinker *linker,
            AcpiPmInfo *pm, AcpiMiscInfo *misc,
            PcPciInfo *pci, MachineState *machine)
 {
@@ -2240,7 +2240,7 @@ build_dsdt(GArray *table_data, GArray *linker,
 }
 
 static void
-build_hpet(GArray *table_data, GArray *linker)
+build_hpet(GArray *table_data, BIOSLinker *linker)
 {
     Acpi20Hpet *hpet;
 
@@ -2255,7 +2255,7 @@ build_hpet(GArray *table_data, GArray *linker)
 }
 
 static void
-build_tpm_tcpa(GArray *table_data, GArray *linker, GArray *tcpalog)
+build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog)
 {
     Acpi20Tcpa *tcpa = acpi_data_push(table_data, sizeof *tcpa);
     uint64_t log_area_start_address = acpi_data_len(tcpalog);
@@ -2280,7 +2280,7 @@ build_tpm_tcpa(GArray *table_data, GArray *linker, GArray *tcpalog)
 }
 
 static void
-build_tpm2(GArray *table_data, GArray *linker)
+build_tpm2(GArray *table_data, BIOSLinker *linker)
 {
     Acpi20TPM2 *tpm2_ptr;
 
@@ -2295,7 +2295,7 @@ build_tpm2(GArray *table_data, GArray *linker)
 }
 
 static void
-build_srat(GArray *table_data, GArray *linker, MachineState *machine)
+build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
 {
     AcpiSystemResourceAffinityTable *srat;
     AcpiSratProcessorAffinity *core;
@@ -2392,7 +2392,7 @@ build_srat(GArray *table_data, GArray *linker, MachineState *machine)
 }
 
 static void
-build_mcfg_q35(GArray *table_data, GArray *linker, AcpiMcfgInfo *info)
+build_mcfg_q35(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info)
 {
     AcpiTableMcfg *mcfg;
     const char *sig;
@@ -2421,7 +2421,7 @@ build_mcfg_q35(GArray *table_data, GArray *linker, AcpiMcfgInfo *info)
 }
 
 static void
-build_dmar_q35(GArray *table_data, GArray *linker)
+build_dmar_q35(GArray *table_data, BIOSLinker *linker)
 {
     int dmar_start = table_data->len;
 
@@ -2445,7 +2445,7 @@ build_dmar_q35(GArray *table_data, GArray *linker)
 }
 
 static GArray *
-build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt)
+build_rsdp(GArray *rsdp_table, BIOSLinker *linker, unsigned rsdt)
 {
     AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
 
@@ -2657,7 +2657,7 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine)
         acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE);
     }
 
-    acpi_align_size(tables->linker, ACPI_BUILD_ALIGN_SIZE);
+    acpi_align_size(tables->linker->cmd_blob, ACPI_BUILD_ALIGN_SIZE);
 
     /* Cleanup memory that's no longer used. */
     g_array_free(table_offsets, true);
@@ -2697,7 +2697,7 @@ static void acpi_build_update(void *build_opaque)
         acpi_ram_update(build_state->rsdp_mr, tables.rsdp);
     }
 
-    acpi_ram_update(build_state->linker_mr, tables.linker);
+    acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob);
     acpi_build_tables_cleanup(&tables, true);
 }
 
@@ -2761,7 +2761,8 @@ void acpi_setup(void)
     assert(build_state->table_mr != NULL);
 
     build_state->linker_mr =
-        acpi_add_rom_blob(build_state, tables.linker, "etc/table-loader", 0);
+        acpi_add_rom_blob(build_state, tables.linker->cmd_blob,
+                          "etc/table-loader", 0);
 
     fw_cfg_add_file(pcms->fw_cfg, ACPI_BUILD_TPMLOG_FILE,
                     tables.tcpalog->data, acpi_data_len(tables.tcpalog));

include/hw/acpi/aml-build.h

@@ -3,6 +3,7 @@
 
 #include <glib.h>
 #include "hw/acpi/acpi-defs.h"
+#include "hw/acpi/bios-linker-loader.h"
 
 /* Reserve RAM space for tables: add another order of magnitude. */
 #define ACPI_BUILD_TABLE_MAX_SIZE         0x200000
@@ -210,7 +211,7 @@ struct AcpiBuildTables {
     GArray *table_data;
     GArray *rsdp;
     GArray *tcpalog;
-    GArray *linker;
+    BIOSLinker *linker;
 } AcpiBuildTables;
 
 /**
@@ -365,7 +366,7 @@ Aml *aml_sizeof(Aml *arg);
 Aml *aml_concatenate(Aml *source1, Aml *source2, Aml *target);
 
 void
-build_header(GArray *linker, GArray *table_data,
+build_header(BIOSLinker *linker, GArray *table_data,
              AcpiTableHeader *h, const char *sig, int len, uint8_t rev,
              const char *oem_id, const char *oem_table_id);
 void *acpi_data_push(GArray *table_data, unsigned size);
@@ -374,7 +375,7 @@ 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_rsdt(GArray *table_data, GArray *linker, GArray *table_offsets,
+build_rsdt(GArray *table_data, BIOSLinker *linker, GArray *table_offsets,
            const char *oem_id, const char *oem_table_id);
 
 int

include/hw/acpi/bios-linker-loader.h

@@ -3,23 +3,27 @@
 
 #include <glib.h>
 
-GArray *bios_linker_loader_init(void);
+typedef struct BIOSLinker {
+    GArray *cmd_blob;
+} BIOSLinker;
 
-void bios_linker_loader_alloc(GArray *linker,
+BIOSLinker *bios_linker_loader_init(void);
+
+void bios_linker_loader_alloc(BIOSLinker *linker,
                               const char *file,
                               uint32_t alloc_align,
                               bool alloc_fseg);
 
-void bios_linker_loader_add_checksum(GArray *linker, const char *file,
+void bios_linker_loader_add_checksum(BIOSLinker *linker, const char *file,
                                      GArray *table,
                                      void *start, unsigned size,
                                      uint8_t *checksum);
 
-void bios_linker_loader_add_pointer(GArray *linker,
+void bios_linker_loader_add_pointer(BIOSLinker *linker,
                                     const char *dest_file,
                                     const char *src_file,
                                     GArray *table, void *pointer,
                                     uint8_t pointer_size);
 
-void *bios_linker_loader_cleanup(GArray *linker);
+void *bios_linker_loader_cleanup(BIOSLinker *linker);
 #endif

include/hw/mem/nvdimm.h

@@ -24,6 +24,7 @@
 #define QEMU_NVDIMM_H
 
 #include "hw/mem/pc-dimm.h"
+#include "hw/acpi/bios-linker-loader.h"
 
 #define NVDIMM_DEBUG 0
 #define nvdimm_debug(fmt, ...)                                \
@@ -58,5 +59,5 @@ typedef struct AcpiNVDIMMState AcpiNVDIMMState;
 void nvdimm_init_acpi_state(AcpiNVDIMMState *state, MemoryRegion *io,
                             FWCfgState *fw_cfg, Object *owner);
 void nvdimm_build_acpi(GArray *table_offsets, GArray *table_data,
-                       GArray *linker);
+                       BIOSLinker *linker);
 #endif