diff mbox series

[v2,3/5] hw/arm: Convert assertions about flash image size to error_report

Message ID 20201118111819.4588-4-david.edmondson@oracle.com (mailing list archive)
State New, archived
Headers show
Series ARM: reduce the memory consumed when mapping UEFI flash images | expand

Commit Message

David Edmondson Nov. 18, 2020, 11:18 a.m. UTC 
Rather than throwing an assertion, provide a more detailed report if a
flash image is inappropriately sized or aligned.

Signed-off-by: David Edmondson <david.edmondson@oracle.com>
---
 hw/arm/virt.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 27dbeb549e..2ba83dd18b 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -967,9 +967,21 @@  static void virt_flash_map1(PFlashCFI01 *flash,
                             MemoryRegion *sysmem)
 {
     DeviceState *dev = DEVICE(flash);
+    const char *name = blk_name(pflash_cfi01_get_blk(flash));
+
+    if (size == 0 || !QEMU_IS_ALIGNED(size, VIRT_FLASH_SECTOR_SIZE)) {
+        error_report("system firmware block device '%s' has invalid size "
+                     "%" PRId64, name, size);
+        info_report("its size must be a non-zero multiple of 0x%" PRIx64,
+                    VIRT_FLASH_SECTOR_SIZE);
+        exit(1);
+    }
+    if (!(size / VIRT_FLASH_SECTOR_SIZE <= UINT32_MAX)) {
+        error_report("system firmware block device '%s' is too large "
+                     "(%" PRId64 ")", name, size);
+        exit(1);
+    }
 
-    assert(QEMU_IS_ALIGNED(size, VIRT_FLASH_SECTOR_SIZE));
-    assert(size / VIRT_FLASH_SECTOR_SIZE <= UINT32_MAX);
     qdev_prop_set_uint32(dev, "num-blocks", size / VIRT_FLASH_SECTOR_SIZE);
     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);