PowerPC 601 / 620 / 970 need a 1MB firmware.

This option is not allowed for PowerMac, as it would overlap with NVRAM.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3480 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 11 insertions, 0 deletions

diff --git a/hw/ppc_chrp.c b/hw/ppc_chrp.c
index f71169e53a..b97f99f8bd 100644
--- a/hw/ppc_chrp.c
+++ b/hw/ppc_chrp.c
@@ -98,6 +98,13 @@ static void ppc_core99_init (int ram_size, int vga_ram_size, int boot_device,
         register_savevm("cpu", 0, 3, cpu_save, cpu_load, env);
         envs[i] = env;
     }
+    if (env->nip < 0xFFF80000) {
+        /* Special test for PowerPC 601:
+         * the boot vector is at 0xFFF00100, then we need a 1MB BIOS.
+         * But the NVRAM is located at 0xFFF04000...
+         */
+        cpu_abort(env, "Mac99 hardware can not handle 1 MB BIOS\n");
+    }
 
     /* allocate RAM */
     cpu_register_physical_memory(0, ram_size, IO_MEM_RAM);
@@ -113,6 +120,10 @@ static void ppc_core99_init (int ram_size, int vga_ram_size, int boot_device,
         exit(1);
     }
     bios_size = (bios_size + 0xfff) & ~0xfff;
+    if (bios_size > 0x00080000) {
+        /* As the NVRAM is located at 0xFFF04000, we cannot use 1 MB BIOSes */
+        cpu_abort(env, "Mac99 hardware can not handle 1 MB BIOS\n");
+    }
     cpu_register_physical_memory((uint32_t)(-bios_size),
                                  bios_size, bios_offset | IO_MEM_ROM);