[PATCH 9/15] initialize hot add system.

[Glauber Costa <gcosta@redhat.com>]

Register the pios, and grab cpu_model for future usage.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 qemu/hw/acpi.c |   35 +++++++++++++++++++++++++++++++++++
 qemu/hw/pc.c   |    1 +
 2 files changed, 36 insertions(+), 0 deletions(-)

diff --git a/qemu/hw/acpi.c b/qemu/hw/acpi.c
index 18561e0..02f6bab 100644
--- a/qemu/hw/acpi.c
+++ b/qemu/hw/acpi.c
@@ -533,6 +533,41 @@ void qemu_system_powerdown(void)
     }
 }
 #endif
+unsigned long gpe_base = 0xafe0;
+
+struct gpe_regs {
+    uint16_t sts; /* status */
+    uint16_t en;  /* enabled */
+};
+
+static struct gpe_regs gpe;
+
+static uint32_t gpe_readb(void *opaque, uint32_t addr)
+{
+    uint32_t val = 0;
+#if defined(DEBUG)
+    printf("gpe read %lx == %lx\n", addr, val);
+#endif
+    return val;
+}
+
+static void gpe_writeb(void *opaque, uint32_t addr, uint32_t val)
+{
+#if defined(DEBUG)
+    printf("gpe write %lx <== %d\n", addr, val);
+#endif
+}
+
+static char *model;
+
+void qemu_system_hot_add_init(char *cpu_model)
+{
+    register_ioport_write(gpe_base, 4, 1, gpe_writeb, &gpe);
+    register_ioport_read(gpe_base, 4, 1,  gpe_readb, &gpe);
+
+    model = cpu_model;
+}
+
 void qemu_system_cpu_hot_add(int cpu, int state)
 {
 }
diff --git a/qemu/hw/pc.c b/qemu/hw/pc.c
index 982377d..ab69e5c 100644
--- a/qemu/hw/pc.c
+++ b/qemu/hw/pc.c
@@ -1020,6 +1020,7 @@ #endif
         }
     }
 
+    qemu_system_hot_add_init(cpu_model);
 #define USE_HYPERCALL
 #ifdef USE_HYPERCALL
     pci_hypercall_init(pci_bus);
-- 
1.4.2


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