1 files changed, 44 insertions, 26 deletions

diff --git a/hw/nvram/mac_nvram.c b/hw/nvram/mac_nvram.c
index 170b10b766..d35f8a3121 100644
--- a/hw/nvram/mac_nvram.c
+++ b/hw/nvram/mac_nvram.c
@@ -26,6 +26,7 @@
 #include "hw/nvram/openbios_firmware_abi.h"
 #include "sysemu/sysemu.h"
 #include "hw/ppc/mac.h"
+#include <zlib.h>
 
 /* debug NVR */
 //#define DEBUG_NVR
@@ -39,29 +40,6 @@
 
 #define DEF_SYSTEM_SIZE 0xc10
 
-/* Direct access to NVRAM */
-uint8_t macio_nvram_read(MacIONVRAMState *s, uint32_t addr)
-{
-    uint32_t ret;
-
-    if (addr < s->size) {
-        ret = s->data[addr];
-    } else {
-        ret = -1;
-    }
-    NVR_DPRINTF("read addr %04" PRIx32 " val %" PRIx8 "\n", addr, ret);
-
-    return ret;
-}
-
-void macio_nvram_write(MacIONVRAMState *s, uint32_t addr, uint8_t val)
-{
-    NVR_DPRINTF("write addr %04" PRIx32 " val %" PRIx8 "\n", addr, val);
-    if (addr < s->size) {
-        s->data[addr] = val;
-    }
-}
-
 /* macio style NVRAM device */
 static void macio_nvram_writeb(void *opaque, hwaddr addr,
                                uint64_t value, unsigned size)
@@ -89,6 +67,10 @@ static uint64_t macio_nvram_readb(void *opaque, hwaddr addr,
 static const MemoryRegionOps macio_nvram_ops = {
     .read = macio_nvram_readb,
     .write = macio_nvram_writeb,
+    .valid.min_access_size = 1,
+    .valid.max_access_size = 4,
+    .impl.min_access_size = 1,
+    .impl.max_access_size = 1,
     .endianness = DEVICE_BIG_ENDIAN,
 };
 
@@ -156,15 +138,16 @@ static void macio_nvram_register_types(void)
 }
 
 /* Set up a system OpenBIOS NVRAM partition */
-void pmac_format_nvram_partition (MacIONVRAMState *nvr, int len)
+static void pmac_format_nvram_partition_of(MacIONVRAMState *nvr, int off,
+                                           int len)
 {
     unsigned int i;
-    uint32_t start = 0, end;
+    uint32_t start = off, end;
     struct OpenBIOS_nvpart_v1 *part_header;
 
     // OpenBIOS nvram variables
     // Variable partition
-    part_header = (struct OpenBIOS_nvpart_v1 *)nvr->data;
+    part_header = (struct OpenBIOS_nvpart_v1 *)&nvr->data[start];
     part_header->signature = OPENBIOS_PART_SYSTEM;
     pstrcpy(part_header->name, sizeof(part_header->name), "system");
 
@@ -192,4 +175,39 @@ void pmac_format_nvram_partition (MacIONVRAMState *nvr, int len)
     OpenBIOS_finish_partition(part_header, end - start);
 }
 
+#define OSX_NVRAM_SIGNATURE     (0x5A)
+
+/* Set up a Mac OS X NVRAM partition */
+static void pmac_format_nvram_partition_osx(MacIONVRAMState *nvr, int off,
+                                            int len)
+{
+    uint32_t start = off;
+    struct OpenBIOS_nvpart_v1 *part_header;
+    unsigned char *data = &nvr->data[start];
+
+    /* empty partition */
+    part_header = (struct OpenBIOS_nvpart_v1 *)data;
+    part_header->signature = OSX_NVRAM_SIGNATURE;
+    pstrcpy(part_header->name, sizeof(part_header->name), "wwwwwwwwwwww");
+
+    OpenBIOS_finish_partition(part_header, len);
+
+    /* Generation */
+    stl_be_p(&data[20], 2);
+
+    /* Adler32 checksum */
+    stl_be_p(&data[16], adler32(0, &data[20], len - 20));
+}
+
+/* Set up NVRAM with OF and OSX partitions */
+void pmac_format_nvram_partition(MacIONVRAMState *nvr, int len)
+{
+    /*
+     * Mac OS X expects side "B" of the flash at the second half of NVRAM,
+     * so we use half of the chip for OF and the other half for a free OSX
+     * partition.
+     */
+    pmac_format_nvram_partition_of(nvr, 0, len / 2);
+    pmac_format_nvram_partition_osx(nvr, len / 2, len / 2);
+}
 type_init(macio_nvram_register_types)