* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
-#include "vl.h"
+#include "hw.h"
+#include "firmware_abi.h"
+#include "sysemu.h"
#include "ppc_mac.h"
+/* debug NVR */
+//#define DEBUG_NVR
+
+#ifdef DEBUG_NVR
+#define NVR_DPRINTF(fmt, ...) \
+ do { printf("NVR: " fmt , ## __VA_ARGS__); } while (0)
+#else
+#define NVR_DPRINTF(fmt, ...)
+#endif
+
struct MacIONVRAMState {
- uint8_t data[0x2000];
+ target_phys_addr_t size;
+ int mem_index;
+ unsigned int it_shift;
+ uint8_t *data;
};
+#define DEF_SYSTEM_SIZE 0xc10
+
/* Direct access to NVRAM */
uint32_t macio_nvram_read (void *opaque, uint32_t addr)
{
MacIONVRAMState *s = opaque;
uint32_t ret;
- // printf("%s: %p addr %04x\n", __func__, s, addr);
- if (addr < 0x2000)
+ if (addr < s->size)
ret = s->data[addr];
else
ret = -1;
+ NVR_DPRINTF("read addr %04x val %x\n", addr, ret);
return ret;
}
{
MacIONVRAMState *s = opaque;
- // printf("%s: %p addr %04x val %02x\n", __func__, s, addr, val);
- if (addr < 0x2000)
+ NVR_DPRINTF("write addr %04x val %x\n", addr, val);
+ if (addr < s->size)
s->data[addr] = val;
}
target_phys_addr_t addr, uint32_t value)
{
MacIONVRAMState *s = opaque;
- addr = (addr >> 4) & 0x1fff;
+
+ addr = (addr >> s->it_shift) & (s->size - 1);
s->data[addr] = value;
- // printf("macio_nvram_writeb %04x = %02x\n", addr, value);
+ NVR_DPRINTF("writeb addr %04x val %x\n", (int)addr, value);
}
static uint32_t macio_nvram_readb (void *opaque, target_phys_addr_t addr)
MacIONVRAMState *s = opaque;
uint32_t value;
- addr = (addr >> 4) & 0x1fff;
+ addr = (addr >> s->it_shift) & (s->size - 1);
value = s->data[addr];
- // printf("macio_nvram_readb %04x = %02x\n", addr, value);
+ NVR_DPRINTF("readb addr %04x val %x\n", (int)addr, value);
return value;
}
&macio_nvram_readb,
};
-MacIONVRAMState *macio_nvram_init (int *mem_index)
+static void macio_nvram_save(QEMUFile *f, void *opaque)
+{
+ MacIONVRAMState *s = (MacIONVRAMState *)opaque;
+
+ qemu_put_buffer(f, s->data, s->size);
+}
+
+static int macio_nvram_load(QEMUFile *f, void *opaque, int version_id)
+{
+ MacIONVRAMState *s = (MacIONVRAMState *)opaque;
+
+ if (version_id != 1)
+ return -EINVAL;
+
+ qemu_get_buffer(f, s->data, s->size);
+
+ return 0;
+}
+
+static void macio_nvram_reset(void *opaque)
+{
+}
+
+MacIONVRAMState *macio_nvram_init (int *mem_index, target_phys_addr_t size,
+ unsigned int it_shift)
{
MacIONVRAMState *s;
+
s = qemu_mallocz(sizeof(MacIONVRAMState));
- if (!s)
- return NULL;
- *mem_index = cpu_register_io_memory(0, nvram_read, nvram_write, s);
+ s->data = qemu_mallocz(size);
+ s->size = size;
+ s->it_shift = it_shift;
+
+ s->mem_index = cpu_register_io_memory(0, nvram_read, nvram_write, s);
+ *mem_index = s->mem_index;
+ register_savevm("macio_nvram", -1, 1, macio_nvram_save, macio_nvram_load,
+ s);
+ qemu_register_reset(macio_nvram_reset, 0, s);
+ macio_nvram_reset(s);
return s;
}
-static uint8_t nvram_chksum (const uint8_t *buf, int n)
+void macio_nvram_map (void *opaque, target_phys_addr_t mem_base)
{
- int sum, i;
- sum = 0;
- for(i = 0; i < n; i++)
- sum += buf[i];
- return (sum & 0xff) + (sum >> 8);
+ MacIONVRAMState *s;
+
+ s = opaque;
+ cpu_register_physical_memory(mem_base, s->size << s->it_shift,
+ s->mem_index);
}
-/* set a free Mac OS NVRAM partition */
+/* Set up a system OpenBIOS NVRAM partition */
void pmac_format_nvram_partition (MacIONVRAMState *nvr, int len)
{
- uint8_t *buf;
- char partition_name[12] = "wwwwwwwwwwww";
-
- buf = nvr->data;
- buf[0] = 0x7f; /* free partition magic */
- buf[1] = 0; /* checksum */
- buf[2] = len >> 8;
- buf[3] = len;
- memcpy(buf + 4, partition_name, 12);
- buf[1] = nvram_chksum(buf, 16);
+ unsigned int i;
+ uint32_t start = 0, end;
+ struct OpenBIOS_nvpart_v1 *part_header;
+
+ // OpenBIOS nvram variables
+ // Variable partition
+ part_header = (struct OpenBIOS_nvpart_v1 *)nvr->data;
+ part_header->signature = OPENBIOS_PART_SYSTEM;
+ pstrcpy(part_header->name, sizeof(part_header->name), "system");
+
+ end = start + sizeof(struct OpenBIOS_nvpart_v1);
+ for (i = 0; i < nb_prom_envs; i++)
+ end = OpenBIOS_set_var(nvr->data, end, prom_envs[i]);
+
+ // End marker
+ nvr->data[end++] = '\0';
+
+ end = start + ((end - start + 15) & ~15);
+ /* XXX: OpenBIOS is not able to grow up a partition. Leave some space for
+ new variables. */
+ if (end < DEF_SYSTEM_SIZE)
+ end = DEF_SYSTEM_SIZE;
+ OpenBIOS_finish_partition(part_header, end - start);
+
+ // free partition
+ start = end;
+ part_header = (struct OpenBIOS_nvpart_v1 *)&nvr->data[start];
+ part_header->signature = OPENBIOS_PART_FREE;
+ pstrcpy(part_header->name, sizeof(part_header->name), "free");
+
+ end = len;
+ OpenBIOS_finish_partition(part_header, end - start);
}