Merge tag 'v1.1.2' into stable-1.1qemu-kvm-1.1.2stable-1.1

* tag 'v1.1.2': (74 commits)
  update VERSION for 1.1.2
  console: bounds check whenever changing the cursor due to an escape code
  qemu-timer: properly arm alarm timer for timers set by device initialization
  target-xtensa: return ENOSYS for unimplemented simcalls
  target-xtensa: fix big-endian BBS/BBC implementation
  ehci: Fix NULL ptr deref when unplugging an USB dev with an iso stream active
  msix: make [un]use vectors on reset/load optional
  reset PMBA and PMREGMISC PIIX4 registers.
  qemu_rearm_alarm_timer: do not call rearm if the next deadline is INT64_MAX
  qemu-ga: Fix null pointer passed to unlink in failure branch
  memory: Fix copy&paste mistake in memory_region_iorange_write
  ivshmem: remove redundant ioeventfd configuration
  hw/arm_gic.c: Define .class_size in arm_gic_info TypeInfo
  tcg/mips: fix broken CONFIG_TCG_PASS_AREG0 code
  audio/winwave: previous audio buffer should be flushed
  target-mips: allow microMIPS SWP and SDP to have RD equal to BASE
  target-mips: add privilege level check to several Cop0 instructions
  mips-linux-user: Always support rdhwr.
  target-mips: Streamline indexed cp1 memory addressing.
  Fix order of CVT.PS.S operands
  ...

Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 18 insertions, 13 deletions

diff --git a/hw/pc.c b/hw/pc.c
index dc3193379..77bd05ec5 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -344,32 +344,37 @@ void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
     /* various important CMOS locations needed by PC/Bochs bios */
 
     /* memory size */
-    val = 640; /* base memory in K */
+    /* base memory (first MiB) */
+    val = MIN(ram_size / 1024, 640);
     rtc_set_memory(s, 0x15, val);
     rtc_set_memory(s, 0x16, val >> 8);
-
-    val = (ram_size / 1024) - 1024;
+    /* extended memory (next 64MiB) */
+    if (ram_size > 1024 * 1024) {
+        val = (ram_size - 1024 * 1024) / 1024;
+    } else {
+        val = 0;
+    }
     if (val > 65535)
         val = 65535;
     rtc_set_memory(s, 0x17, val);
     rtc_set_memory(s, 0x18, val >> 8);
     rtc_set_memory(s, 0x30, val);
     rtc_set_memory(s, 0x31, val >> 8);
-
-    if (above_4g_mem_size) {
-        rtc_set_memory(s, 0x5b, (unsigned int)above_4g_mem_size >> 16);
-        rtc_set_memory(s, 0x5c, (unsigned int)above_4g_mem_size >> 24);
-        rtc_set_memory(s, 0x5d, (uint64_t)above_4g_mem_size >> 32);
-    }
-
-    if (ram_size > (16 * 1024 * 1024))
-        val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
-    else
+    /* memory between 16MiB and 4GiB */
+    if (ram_size > 16 * 1024 * 1024) {
+        val = (ram_size - 16 * 1024 * 1024) / 65536;
+    } else {
         val = 0;
+    }
     if (val > 65535)
         val = 65535;
     rtc_set_memory(s, 0x34, val);
     rtc_set_memory(s, 0x35, val >> 8);
+    /* memory above 4GiB */
+    val = above_4g_mem_size / 65536;
+    rtc_set_memory(s, 0x5b, val);
+    rtc_set_memory(s, 0x5c, val >> 8);
+    rtc_set_memory(s, 0x5d, val >> 16);
 
     /* set the number of CPU */
     rtc_set_memory(s, 0x5f, smp_cpus - 1);