# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1215702937 -3600
# Node ID d5efa03793a2521dff488ab4e5a0bfe98d28bd46
# Parent f454f2cac170a511b6727f84a8032a8132e05d84
ioemu: create a rom-protect platform flag.
Signed-off-by: Trolle Selander <trolle.selander@xxxxxxxxxxxxx>
Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx>
---
tools/ioemu/hw/xen_platform.c | 98 +++++++++++++++++++++++++++++++++---------
1 files changed, 77 insertions(+), 21 deletions(-)
diff -r f454f2cac170 -r d5efa03793a2 tools/ioemu/hw/xen_platform.c
--- a/tools/ioemu/hw/xen_platform.c Thu Jul 10 15:45:18 2008 +0100
+++ b/tools/ioemu/hw/xen_platform.c Thu Jul 10 16:15:37 2008 +0100
@@ -28,10 +28,52 @@
extern FILE *logfile;
-static void platform_ioport_map(PCIDevice *pci_dev, int region_num,
- uint32_t addr, uint32_t size, int type)
-{
- /* nothing yet */
+#define PFFLAG_ROM_LOCK 1 /* Sets whether ROM memory area is RW or RO */
+
+typedef struct PCIXenPlatformState
+{
+ PCIDevice pci_dev;
+ uint8_t platform_flags;
+} PCIXenPlatformState;
+
+static uint32_t xen_platform_ioport_readb(void *opaque, uint32_t addr)
+{
+ PCIXenPlatformState *s = opaque;
+
+ addr &= 0xff;
+
+ return (addr == 0) ? s->platform_flags : ~0u;
+}
+
+static void xen_platform_ioport_writeb(void *opaque, uint32_t addr, uint32_t
val)
+{
+ PCIXenPlatformState *d = opaque;
+
+ addr &= 0xff;
+ val &= 0xff;
+
+ switch (addr) {
+ case 0: /* Platform flags */ {
+ hvmmem_type_t mem_type = (val & PFFLAG_ROM_LOCK) ?
+ HVMMEM_ram_ro : HVMMEM_ram_rw;
+ if (xc_hvm_set_mem_type(xc_handle, domid, mem_type, 0xc0, 0x40))
+ fprintf(logfile,"xen_platform: unable to change ro/rw "
+ "state of ROM memory area!\n");
+ else
+ d->platform_flags = val & PFFLAG_ROM_LOCK;
+ break;
+ }
+ default:
+ break;
+ }
+}
+
+
+static void platform_ioport_map(PCIDevice *pci_dev, int region_num, uint32_t
addr, uint32_t size, int type)
+{
+ PCIXenPlatformState *d = (PCIXenPlatformState *)pci_dev;
+ register_ioport_write(addr, size, 1, xen_platform_ioport_writeb, d);
+ register_ioport_read(addr, size, 1, xen_platform_ioport_readb, d);
}
static uint32_t platform_mmio_read(void *opaque, target_phys_addr_t addr)
@@ -109,30 +151,42 @@ struct pci_config_header {
void xen_pci_save(QEMUFile *f, void *opaque)
{
- PCIDevice *d = opaque;
-
- pci_device_save(d, f);
+ PCIXenPlatformState *d = opaque;
+
+ pci_device_save(&d->pci_dev, f);
+ qemu_put_8s(f, &d->platform_flags);
}
int xen_pci_load(QEMUFile *f, void *opaque, int version_id)
{
- PCIDevice *d = opaque;
-
- if (version_id != 1)
+ PCIXenPlatformState *d = opaque;
+ int ret;
+
+ if (version_id > 2)
return -EINVAL;
- return pci_device_load(d, f);
+ ret = pci_device_load(&d->pci_dev, f);
+ if (ret < 0)
+ return ret;
+
+ if (version_id >= 2) {
+ uint8_t flags;
+ qemu_get_8s(f, &flags);
+ xen_platform_ioport_writeb(d, 0, flags);
+ }
+
+ return 0;
}
void pci_xen_platform_init(PCIBus *bus)
{
- PCIDevice *d;
+ PCIXenPlatformState *d;
struct pci_config_header *pch;
printf("Register xen platform.\n");
- d = pci_register_device(bus, "xen-platform", sizeof(PCIDevice), -1, NULL,
- NULL);
- pch = (struct pci_config_header *)d->config;
+ d = (PCIXenPlatformState *)pci_register_device(
+ bus, "xen-platform", sizeof(PCIXenPlatformState), -1, NULL, NULL);
+ pch = (struct pci_config_header *)d->pci_dev.config;
pch->vendor_id = 0x5853;
pch->device_id = 0x0001;
pch->command = 3; /* IO and memory access */
@@ -148,13 +202,15 @@ void pci_xen_platform_init(PCIBus *bus)
pch->subsystem_vendor_id = pch->vendor_id; /* Duplicate vendor id. */
pch->subsystem_id = 0x0001; /* Hardcode sub-id as 1. */
- pci_register_io_region(d, 0, 0x100, PCI_ADDRESS_SPACE_IO,
- platform_ioport_map);
+ pci_register_io_region(&d->pci_dev, 0, 0x100,
+ PCI_ADDRESS_SPACE_IO, platform_ioport_map);
/* reserve 16MB mmio address for share memory*/
- pci_register_io_region(d, 1, 0x1000000, PCI_ADDRESS_SPACE_MEM_PREFETCH,
- platform_mmio_map);
-
- register_savevm("platform", 0, 1, xen_pci_save, xen_pci_load, d);
+ pci_register_io_region(&d->pci_dev, 1, 0x1000000,
+ PCI_ADDRESS_SPACE_MEM_PREFETCH, platform_mmio_map);
+
+ xen_platform_ioport_writeb(d, 0, 0);
+
+ register_savevm("platform", 0, 2, xen_pci_save, xen_pci_load, d);
printf("Done register platform.\n");
}
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