[Qemu-devel] [RFC][PATCH v15 5/6] pc_piix, pc_q35: export fw_cfg

[Hu Tao]

This lets other devices pass informations to seabios.

Signed-off-by: Hu Tao <address@hidden>
---
 hw/i386/pc_piix.c | 7 ++++---
 hw/i386/pc_q35.c  | 9 ++++++---
 hw/pc.h           | 6 ++++++
 3 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 0ee3b3b..2a57b50 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -54,6 +54,8 @@ static const int ide_iobase[MAX_IDE_BUS] = { 0x1f0, 0x170 };
 static const int ide_iobase2[MAX_IDE_BUS] = { 0x3f6, 0x376 };
 static const int ide_irq[MAX_IDE_BUS] = { 14, 15 };
 
+void *fw_cfg_piix;
+
 /* PC hardware initialisation */
 static void pc_init1(MemoryRegion *system_memory,
                      MemoryRegion *system_io,
@@ -84,7 +86,6 @@ static void pc_init1(MemoryRegion *system_memory,
     MemoryRegion *ram_memory;
     MemoryRegion *pci_memory;
     MemoryRegion *rom_memory;
-    void *fw_cfg = NULL;
 
     pc_cpus_init(cpu_model);
     pc_acpi_init("acpi-dsdt.aml");
@@ -112,7 +113,7 @@ static void pc_init1(MemoryRegion *system_memory,
 
     /* allocate ram and load rom/bios */
     if (!xen_enabled()) {
-        fw_cfg = pc_memory_init(system_memory,
+        fw_cfg_piix = pc_memory_init(system_memory,
                        kernel_filename, kernel_cmdline, initrd_filename,
                        below_4g_mem_size, above_4g_mem_size,
                        rom_memory, &ram_memory);
@@ -209,7 +210,7 @@ static void pc_init1(MemoryRegion *system_memory,
         /* TODO: Populate SPD eeprom data.  */
         smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100,
                               gsi[9], *smi_irq,
-                              kvm_enabled(), fw_cfg);
+                              kvm_enabled(), fw_cfg_piix);
         smbus_eeprom_init(smbus, 8, NULL, 0);
     }
 
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 4f5f347..ce7798c 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -45,6 +45,8 @@
 /* ICH9 AHCI has 6 ports */
 #define MAX_SATA_PORTS     6
 
+void *fw_cfg_q35;
+
 /* set CMOS shutdown status register (index 0xF) as S3_resume(0xFE)
  *    BIOS will read it and start S3 resume at POST Entry */
 static void pc_cmos_set_s3_resume(void *opaque, int irq, int level)
@@ -111,9 +113,10 @@ static void pc_q35_init(QEMUMachineInitArgs *args)
 
     /* allocate ram and load rom/bios */
     if (!xen_enabled()) {
-        pc_memory_init(get_system_memory(), kernel_filename, kernel_cmdline,
-                       initrd_filename, below_4g_mem_size, above_4g_mem_size,
-                       rom_memory, &ram_memory);
+        fw_cfg_q35 = pc_memory_init(get_system_memory(), kernel_filename,
+                                    kernel_cmdline, initrd_filename,
+                                    below_4g_mem_size, above_4g_mem_size,
+                                    rom_memory, &ram_memory);
     }
 
     /* irq lines */
diff --git a/hw/pc.h b/hw/pc.h
index dbbd8cd..8ca73f1 100644
--- a/hw/pc.h
+++ b/hw/pc.h
@@ -145,6 +145,12 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state, int 
*piix_devfn,
 extern PCIDevice *piix4_dev;
 int piix4_init(PCIBus *bus, ISABus **isa_bus, int devfn);
 
+/* pc_piix.c */
+extern void *fw_cfg_piix;
+
+/* pc_q35.c */
+extern void *fw_cfg_q35;
+
 /* vga.c */
 enum vga_retrace_method {
     VGA_RETRACE_DUMB,
-- 
1.8.1.4