[Qemu-devel] [PATCH 5/5] Remove CONFIG_KVM and use emu_ver to runtime detect QEMU & KVM.

[Jes Sorensen <jes@sgi.com>]

[-- Attachment #1: 0006-kvm-runtime-detect.patch --]
[-- Type: text/plain, Size: 3179 bytes --]

This patch makes Seabios use emu_ver to determine QEMU and KVM
specific configuration at runtime.

Signed-off-by: Jes Sorensen <jes@sgi.com>

---
 src/acpi.c    |   14 +++++++-------
 src/config.h  |    2 --
 src/pciinit.c |   18 +++++++++++++-----
 src/post.c    |    2 +-
 4 files changed, 21 insertions(+), 15 deletions(-)

Index: seabios/src/acpi.c
===================================================================
--- seabios.orig/src/acpi.c
+++ seabios/src/acpi.c
@@ -196,12 +196,8 @@ struct madt_io_apic
                                  * lines start */
 } PACKED;
 
-#if CONFIG_KVM
-/* IRQs 5,9,10,11 */
-#define PCI_ISA_IRQ_MASK    0x0e20
-#else
-#define PCI_ISA_IRQ_MASK    0x0000
-#endif
+/* IRQs 5,9,10,11 for QEMU/KQEMU/KVM */
+#define QEMU_PCI_ISA_IRQ_MASK    0x0e20
 
 struct madt_intsrcovr {
     APIC_HEADER_DEF
@@ -339,8 +335,12 @@ build_madt(struct rsdt_descriptor_rev1 *
         intsrcovr->flags  = 0; /* conforms to bus specifications */
         intsrcovr++;
     }
+    int pci_isa_irq_mask = 0;
+    if ((emu_ver & 0xff00) == EMU_QEMU)
+        pci_isa_irq_mask = QEMU_PCI_ISA_IRQ_MASK;
+
     for (i = 1; i < 16; i++) {
-        if (!(PCI_ISA_IRQ_MASK & (1 << i)))
+        if (!(pci_isa_irq_mask & (1 << i)))
             /* No need for a INT source override structure. */
             continue;
         memset(intsrcovr, 0, sizeof(*intsrcovr));
Index: seabios/src/config.h
===================================================================
--- seabios.orig/src/config.h
+++ seabios/src/config.h
@@ -12,8 +12,6 @@
 #define CONFIG_APPNAME6 "BOCHS "
 #define CONFIG_APPNAME4 "BXPC"
 
-// Configure for use with KVM.
-#define CONFIG_KVM 1
 // Configure as a coreboot payload.
 #define CONFIG_COREBOOT 0
 
Index: seabios/src/pciinit.c
===================================================================
--- seabios.orig/src/pciinit.c
+++ seabios/src/pciinit.c
@@ -18,12 +18,15 @@ static u32 pci_bios_io_addr;
 static u32 pci_bios_mem_addr;
 static u32 pci_bios_bigmem_addr;
 /* host irqs corresponding to PCI irqs A-D */
-static u8 pci_irqs[4] = {
-#if CONFIG_KVM
-    10, 10, 11, 11
-#else
+
+static u8 *pci_irqs;
+
+static u8 default_pci_irqs[4] = {
     11, 9, 11, 9
-#endif
+};
+
+static u8 qemu_pci_irqs[4] = {
+    10, 10, 11, 11
 };
 
 static void pci_set_io_region_addr(u16 bdf, int region_num, u32 addr)
@@ -194,6 +197,11 @@ pci_bios_setup(void)
         // Already done by coreboot.
         return;
 
+    if ((emu_ver & 0xff00) == EMU_QEMU)
+        pci_irqs = qemu_pci_irqs;
+    else
+        pci_irqs = default_pci_irqs;
+
     pci_bios_io_addr = 0xc000;
     pci_bios_mem_addr = 0xc0000000;
     pci_bios_bigmem_addr = RamSize;
Index: seabios/src/post.c
===================================================================
--- seabios.orig/src/post.c
+++ seabios/src/post.c
@@ -129,7 +129,7 @@ ram_probe(void)
              , E820_RESERVED);
     add_e820(BUILD_BIOS_ADDR, BUILD_BIOS_SIZE, E820_RESERVED);
 
-    if (CONFIG_KVM)
+    if (emu_ver == EMU_QEMU_KVM)
         // 4 pages before the bios, 3 pages for vmx tss pages, the
         // other page for EPT real mode pagetable
         add_e820(0xfffbc000, 4*4096, E820_RESERVED);