raven: Move BIOS loading from board code to PCI host

Raven datasheet explains where firmware lives in system memory, so do
it there instead of in board code. Other boards using the same PCI
host will not have to copy the firmware loading code.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
[AF: Drop BIOS size workaround in favor of replacing our firmware blob]
Signed-off-by: Andreas Färber <andreas.faerber@web.de>

1 files changed, 51 insertions, 0 deletions

diff --git a/hw/pci-host/prep.c b/hw/pci-host/prep.c
index 0c948e2..94fdffa 100644
--- a/hw/pci-host/prep.c
+++ b/hw/pci-host/prep.c
@@ -28,7 +28,9 @@
 #include "hw/pci/pci_bus.h"
 #include "hw/pci/pci_host.h"
 #include "hw/i386/pc.h"
+#include "hw/loader.h"
 #include "exec/address-spaces.h"
+#include "elf.h"
 
 #define TYPE_RAVEN_PCI_DEVICE "raven"
 #define TYPE_RAVEN_PCI_HOST_BRIDGE "raven-pcihost"
@@ -38,6 +40,10 @@
 
 typedef struct RavenPCIState {
     PCIDevice dev;
+
+    uint32_t elf_machine;
+    char *bios_name;
+    MemoryRegion bios;
 } RavenPCIState;
 
 #define RAVEN_PCI_HOST_BRIDGE(obj) \
@@ -52,6 +58,8 @@ typedef struct PRePPCIState {
     RavenPCIState pci_dev;
 } PREPPCIState;
 
+#define BIOS_SIZE (1024 * 1024)
+
 static inline uint32_t PPC_PCIIO_config(hwaddr addr)
 {
     int i;
@@ -169,10 +177,45 @@ static void raven_pcihost_initfn(Object *obj)
 
 static int raven_init(PCIDevice *d)
 {
+    RavenPCIState *s = RAVEN_PCI_DEVICE(d);
+    char *filename;
+    int bios_size = -1;
+
     d->config[0x0C] = 0x08; // cache_line_size
     d->config[0x0D] = 0x10; // latency_timer
     d->config[0x34] = 0x00; // capabilities_pointer
 
+    memory_region_init_ram(&s->bios, OBJECT(s), "bios", BIOS_SIZE);
+    memory_region_set_readonly(&s->bios, true);
+    memory_region_add_subregion(get_system_memory(), (uint32_t)(-BIOS_SIZE),
+                                &s->bios);
+    vmstate_register_ram_global(&s->bios);
+    if (s->bios_name) {
+        filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, s->bios_name);
+        if (filename) {
+            if (s->elf_machine != EM_NONE) {
+                bios_size = load_elf(filename, NULL, NULL, NULL,
+                                     NULL, NULL, 1, s->elf_machine, 0);
+            }
+            if (bios_size < 0) {
+                bios_size = get_image_size(filename);
+                if (bios_size > 0 && bios_size <= BIOS_SIZE) {
+                    hwaddr bios_addr;
+                    bios_size = (bios_size + 0xfff) & ~0xfff;
+                    bios_addr = (uint32_t)(-BIOS_SIZE);
+                    bios_size = load_image_targphys(filename, bios_addr,
+                                                    bios_size);
+                }
+            }
+        }
+        if (bios_size < 0 || bios_size > BIOS_SIZE) {
+            hw_error("qemu: could not load bios image '%s'\n", s->bios_name);
+        }
+        if (filename) {
+            g_free(filename);
+        }
+    }
+
     return 0;
 }
 
@@ -212,12 +255,20 @@ static const TypeInfo raven_info = {
     .class_init = raven_class_init,
 };
 
+static Property raven_pcihost_properties[] = {
+    DEFINE_PROP_UINT32("elf-machine", PREPPCIState, pci_dev.elf_machine,
+                       EM_NONE),
+    DEFINE_PROP_STRING("bios-name", PREPPCIState, pci_dev.bios_name),
+    DEFINE_PROP_END_OF_LIST()
+};
+
 static void raven_pcihost_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
     dc->realize = raven_pcihost_realizefn;
+    dc->props = raven_pcihost_properties;
     dc->fw_name = "pci";
 }