only setup rom mapping once

1 files changed, 11 insertions, 10 deletions

diff --git a/posttool.c b/posttool.c
index 660d711..1cccaf9 100644
--- a/posttool.c
+++ b/posttool.c
@@ -93,23 +93,15 @@ int do_real_post(unsigned pci_device)
 	return error;
 }
 
+void *rom_cseg;
 unsigned char romfile[65536];
 
 int do_vga_post(struct pci_device *dev)
 {
 	int error = 0;
-	void *rc;
 	/* need to pull the ROM file */
 	unsigned int pci_id;
 	int ret;
-
-	munmap((void*)0xc0000, 64*1024);
-	rc = mmap((void*)0xc0000, 64*1024, PROT_READ|PROT_WRITE|PROT_EXEC,
-		MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
-	if (!rc) {
-		fprintf(stderr,"unable to map rom\n");
-		return 0;
-	}
 		
 	pci_device_enable(dev);
 	pci_device_vgaarb_set_target(dev);
@@ -120,7 +112,7 @@ int do_vga_post(struct pci_device *dev)
 		return 0;
 	}
 
-	memcpy(rc, romfile, 65536);
+	memcpy(rom_cseg, romfile, 65536);
 
 	pci_id = (dev->bus << 8) + (dev->dev << 3) +
 		    (dev->func & 0x7);
@@ -143,6 +135,15 @@ int do_post(void)
 	struct pci_device *dev, *first_dev = NULL;
 	struct pci_device_iterator *iter;
 
+	/* setup rom at 0xc0000 section */
+	munmap((void*)0xc0000, 64*1024);
+	rom_cseg = mmap((void*)0xc0000, 64*1024, PROT_READ|PROT_WRITE|PROT_EXEC,
+			MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
+	if (!rom_cseg) {
+		fprintf(stderr,"unable to map rom\n");
+		return 0;
+	}
+	
 	pci_device_vgaarb_init();
 	iter = pci_id_match_iterator_create(&dev_match);
 	if (iter == NULL) {