DS1225Y nvram device, by Herve Poussineau.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2460 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/Makefile.target b/Makefile.target
index b5cde5d..8eaa8dd 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -383,7 +383,7 @@
endif
ifeq ($(TARGET_ARCH), mips)
VL_OBJS+= mips_r4k.o mips_malta.o mips_timer.o mips_int.o dma.o vga.o serial.o i8254.o i8259.o
-VL_OBJS+= ide.o gt64xxx.o pckbd.o ps2.o fdc.o mc146818rtc.o usb-uhci.o acpi.o
+VL_OBJS+= ide.o gt64xxx.o pckbd.o ps2.o fdc.o mc146818rtc.o usb-uhci.o acpi.o ds1225y.o
VL_OBJS+= piix_pci.o parallel.o mixeng.o cirrus_vga.o $(SOUND_HW) $(AUDIODRV)
DEFINES += -DHAS_AUDIO
endif
diff --git a/hw/ds1225y.c b/hw/ds1225y.c
new file mode 100644
index 0000000..48d6636
--- /dev/null
+++ b/hw/ds1225y.c
@@ -0,0 +1,121 @@
+/*
+ * QEMU NVRAM emulation for DS1225Y chip
+ *
+ * Copyright (c) 2007 Hervé Poussineau
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "vl.h"
+
+typedef enum
+{
+ none = 0,
+ readmode,
+ writemode,
+} nvram_open_mode;
+
+struct ds1225y_t
+{
+ target_ulong mem_base;
+ uint32_t capacity;
+ const char *filename;
+ QEMUFile *file;
+ nvram_open_mode open_mode;
+};
+
+static int ds1225y_set_to_mode(ds1225y_t *NVRAM, nvram_open_mode mode, const char *filemode)
+{
+ if (NVRAM->open_mode != mode)
+ {
+ if (NVRAM->file)
+ qemu_fclose(NVRAM->file);
+ NVRAM->file = qemu_fopen(NVRAM->filename, filemode);
+ NVRAM->open_mode = mode;
+ }
+ return (NVRAM->file != NULL);
+}
+
+static uint32_t nvram_readb (void *opaque, target_phys_addr_t addr)
+{
+ ds1225y_t *NVRAM = opaque;
+ int64_t pos;
+
+ pos = addr - NVRAM->mem_base;
+ if (addr >= NVRAM->capacity)
+ addr -= NVRAM->capacity;
+
+ if (!ds1225y_set_to_mode(NVRAM, readmode, "rb"))
+ return 0;
+ qemu_fseek(NVRAM->file, pos, SEEK_SET);
+ return (uint32_t)qemu_get_byte(NVRAM->file);
+}
+
+static void nvram_writeb (void *opaque, target_phys_addr_t addr, uint32_t value)
+{
+ ds1225y_t *NVRAM = opaque;
+ int64_t pos;
+
+ pos = addr - NVRAM->mem_base;
+ if (ds1225y_set_to_mode(NVRAM, writemode, "wb"))
+ {
+ qemu_fseek(NVRAM->file, pos, SEEK_SET);
+ qemu_put_byte(NVRAM->file, (int)value);
+ }
+}
+
+static CPUReadMemoryFunc *nvram_read[] = {
+ &nvram_readb,
+ NULL,
+ NULL,
+};
+
+static CPUWriteMemoryFunc *nvram_write[] = {
+ &nvram_writeb,
+ NULL,
+ NULL,
+};
+
+static CPUWriteMemoryFunc *nvram_none[] = {
+ NULL,
+ NULL,
+ NULL,
+};
+
+/* Initialisation routine */
+ds1225y_t *ds1225y_init(target_ulong mem_base, const char *filename)
+{
+ ds1225y_t *s;
+ int mem_index1, mem_index2;
+
+ s = qemu_mallocz(sizeof(ds1225y_t));
+ if (!s)
+ return NULL;
+ s->mem_base = mem_base;
+ s->capacity = 0x2000; /* Fixed for ds1225y chip: 8K */
+ s->filename = filename;
+
+ /* Read/write memory */
+ mem_index1 = cpu_register_io_memory(0, nvram_read, nvram_write, s);
+ cpu_register_physical_memory(mem_base, s->capacity, mem_index1);
+ /* Read-only memory */
+ mem_index2 = cpu_register_io_memory(0, nvram_read, nvram_none, s);
+ cpu_register_physical_memory(mem_base + s->capacity, s->capacity, mem_index2);
+ return s;
+}
diff --git a/hw/mips_r4k.c b/hw/mips_r4k.c
index 63ad367..b6054fd 100644
--- a/hw/mips_r4k.c
+++ b/hw/mips_r4k.c
@@ -215,6 +215,7 @@
bs_table[2 * i], bs_table[2 * i + 1]);
kbd_init();
+ ds1225y_init(0x9000, "nvram");
}
QEMUMachine mips_machine = {
diff --git a/vl.h b/vl.h
index c6d305c..ae501e2 100644
--- a/vl.h
+++ b/vl.h
@@ -941,6 +941,10 @@
int cdrom_read_toc(int nb_sectors, uint8_t *buf, int msf, int start_track);
int cdrom_read_toc_raw(int nb_sectors, uint8_t *buf, int msf, int session_num);
+/* ds1225y.c */
+typedef struct ds1225y_t ds1225y_t;
+ds1225y_t *ds1225y_init(target_ulong mem_base, const char *filename);
+
/* es1370.c */
int es1370_init (PCIBus *bus, AudioState *s);
