# include "hw.h"
# include "flash.h"
# include "blockdev.h"
+# include "sysbus.h"
# define NAND_CMD_READ0 0x00
# define NAND_CMD_READ1 0x01
# define MAX_PAGE 0x800
# define MAX_OOB 0x40
+typedef struct NANDFlashState NANDFlashState;
struct NANDFlashState {
+ SysBusDevice busdev;
uint8_t manf_id, chip_id;
uint8_t buswidth; /* in BYTES */
int size, pages;
uint32_t ioaddr_vmstate;
};
+static void mem_and(uint8_t *dest, const uint8_t *src, size_t n)
+{
+ /* Like memcpy() but we logical-AND the data into the destination */
+ int i;
+ for (i = 0; i < n; i++) {
+ dest[i] &= src[i];
+ }
+}
+
# define NAND_NO_AUTOINCR 0x00000001
# define NAND_BUSWIDTH_16 0x00000002
# define NAND_NO_PADDING 0x00000004
[0xc5] = { 2048, 16, 0, 0, LP_OPTIONS16 },
};
-static void nand_reset(NANDFlashState *s)
+static void nand_reset(DeviceState *dev)
{
+ NANDFlashState *s = FROM_SYSBUS(NANDFlashState, sysbus_from_qdev(dev));
s->cmd = NAND_CMD_READ0;
s->addr = 0;
s->addrlen = 0;
break;
case NAND_CMD_RESET:
- nand_reset(s);
+ nand_reset(&s->busdev.qdev);
break;
case NAND_CMD_PAGEPROGRAM1:
}
};
+static int nand_device_init(SysBusDevice *dev)
+{
+ int pagesize;
+ NANDFlashState *s = FROM_SYSBUS(NANDFlashState, dev);
+
+ s->buswidth = nand_flash_ids[s->chip_id].width >> 3;
+ s->size = nand_flash_ids[s->chip_id].size << 20;
+ if (nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP) {
+ s->page_shift = 11;
+ s->erase_shift = 6;
+ } else {
+ s->page_shift = nand_flash_ids[s->chip_id].page_shift;
+ s->erase_shift = nand_flash_ids[s->chip_id].erase_shift;
+ }
+
+ switch (1 << s->page_shift) {
+ case 256:
+ nand_init_256(s);
+ break;
+ case 512:
+ nand_init_512(s);
+ break;
+ case 2048:
+ nand_init_2048(s);
+ break;
+ default:
+ hw_error("%s: Unsupported NAND block size.\n", __func__);
+ }
+
+ pagesize = 1 << s->oob_shift;
+ s->mem_oob = 1;
+ if (s->bdrv && bdrv_getlength(s->bdrv) >=
+ (s->pages << s->page_shift) + (s->pages << s->oob_shift)) {
+ pagesize = 0;
+ s->mem_oob = 0;
+ }
+
+ if (!s->bdrv) {
+ pagesize += 1 << s->page_shift;
+ }
+ if (pagesize) {
+ s->storage = (uint8_t *) memset(g_malloc(s->pages * pagesize),
+ 0xff, s->pages * pagesize);
+ }
+ /* Give s->ioaddr a sane value in case we save state before it is used. */
+ s->ioaddr = s->io;
+
+ return 0;
+}
+
+static SysBusDeviceInfo nand_info = {
+ .init = nand_device_init,
+ .qdev.name = "nand",
+ .qdev.size = sizeof(NANDFlashState),
+ .qdev.reset = nand_reset,
+ .qdev.vmsd = &vmstate_nand,
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_UINT8("manufacturer_id", NANDFlashState, manf_id, 0),
+ DEFINE_PROP_UINT8("chip_id", NANDFlashState, chip_id, 0),
+ DEFINE_PROP_DRIVE("drive", NANDFlashState, bdrv),
+ DEFINE_PROP_END_OF_LIST()
+ }
+};
+
+static void nand_create_device(void)
+{
+ sysbus_register_withprop(&nand_info);
+}
+
/*
* Chip inputs are CLE, ALE, CE, WP, GND and eight I/O pins. Chip
* outputs are R/B and eight I/O pins.
*
* CE, WP and R/B are active low.
*/
-void nand_setpins(NANDFlashState *s, uint8_t cle, uint8_t ale,
+void nand_setpins(DeviceState *dev, uint8_t cle, uint8_t ale,
uint8_t ce, uint8_t wp, uint8_t gnd)
{
+ NANDFlashState *s = (NANDFlashState *) dev;
s->cle = cle;
s->ale = ale;
s->ce = ce;
s->status &= ~NAND_IOSTATUS_UNPROTCT;
}
-void nand_getpins(NANDFlashState *s, int *rb)
+void nand_getpins(DeviceState *dev, int *rb)
{
*rb = 1;
}
-void nand_setio(NANDFlashState *s, uint32_t value)
+void nand_setio(DeviceState *dev, uint32_t value)
{
int i;
-
+ NANDFlashState *s = (NANDFlashState *) dev;
if (!s->ce && s->cle) {
if (nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP) {
if (s->cmd == NAND_CMD_READ0 && value == NAND_CMD_LPREAD2)
}
}
-uint32_t nand_getio(NANDFlashState *s)
+uint32_t nand_getio(DeviceState *dev)
{
int offset;
uint32_t x = 0;
+ NANDFlashState *s = (NANDFlashState *) dev;
/* Allow sequential reading */
if (!s->iolen && s->cmd == NAND_CMD_READ0) {
return x;
}
-uint32_t nand_getbuswidth(NANDFlashState *s)
+uint32_t nand_getbuswidth(DeviceState *dev)
{
+ NANDFlashState *s = (NANDFlashState *) dev;
return s->buswidth << 3;
}
-NANDFlashState *nand_init(BlockDriverState *bdrv, int manf_id, int chip_id)
+DeviceState *nand_init(BlockDriverState *bdrv, int manf_id, int chip_id)
{
- int pagesize;
- NANDFlashState *s;
+ DeviceState *dev;
if (nand_flash_ids[chip_id].size == 0) {
hw_error("%s: Unsupported NAND chip ID.\n", __FUNCTION__);
}
-
- s = (NANDFlashState *) qemu_mallocz(sizeof(NANDFlashState));
- s->bdrv = bdrv;
- s->manf_id = manf_id;
- s->chip_id = chip_id;
- s->buswidth = nand_flash_ids[s->chip_id].width >> 3;
- s->size = nand_flash_ids[s->chip_id].size << 20;
- if (nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP) {
- s->page_shift = 11;
- s->erase_shift = 6;
- } else {
- s->page_shift = nand_flash_ids[s->chip_id].page_shift;
- s->erase_shift = nand_flash_ids[s->chip_id].erase_shift;
- }
-
- switch (1 << s->page_shift) {
- case 256:
- nand_init_256(s);
- break;
- case 512:
- nand_init_512(s);
- break;
- case 2048:
- nand_init_2048(s);
- break;
- default:
- hw_error("%s: Unsupported NAND block size.\n", __FUNCTION__);
- }
-
- pagesize = 1 << s->oob_shift;
- s->mem_oob = 1;
- if (s->bdrv && bdrv_getlength(s->bdrv) >=
- (s->pages << s->page_shift) + (s->pages << s->oob_shift)) {
- pagesize = 0;
- s->mem_oob = 0;
+ dev = qdev_create(NULL, "nand");
+ qdev_prop_set_uint8(dev, "manufacturer_id", manf_id);
+ qdev_prop_set_uint8(dev, "chip_id", chip_id);
+ if (bdrv) {
+ qdev_prop_set_drive_nofail(dev, "drive", bdrv);
}
- if (!s->bdrv)
- pagesize += 1 << s->page_shift;
- if (pagesize)
- s->storage = (uint8_t *) memset(qemu_malloc(s->pages * pagesize),
- 0xff, s->pages * pagesize);
- /* Give s->ioaddr a sane value in case we save state before it
- is used. */
- s->ioaddr = s->io;
-
- vmstate_register(NULL, -1, &vmstate_nand, s);
-
- return s;
+ qdev_init_nofail(dev);
+ return dev;
}
-void nand_done(NANDFlashState *s)
-{
- if (s->bdrv) {
- bdrv_close(s->bdrv);
- bdrv_delete(s->bdrv);
- }
-
- if (!s->bdrv || s->mem_oob)
- qemu_free(s->storage);
-
- qemu_free(s);
-}
+device_init(nand_create_device)
#else
return;
if (!s->bdrv) {
- memcpy(s->storage + PAGE_START(s->addr) + (s->addr & PAGE_MASK) +
+ mem_and(s->storage + PAGE_START(s->addr) + (s->addr & PAGE_MASK) +
s->offset, s->io, s->iolen);
} else if (s->mem_oob) {
sector = SECTOR(s->addr);
return;
}
- memcpy(iobuf + (soff | off), s->io, MIN(s->iolen, PAGE_SIZE - off));
+ mem_and(iobuf + (soff | off), s->io, MIN(s->iolen, PAGE_SIZE - off));
if (off + s->iolen > PAGE_SIZE) {
page = PAGE(s->addr);
- memcpy(s->storage + (page << OOB_SHIFT), s->io + PAGE_SIZE - off,
+ mem_and(s->storage + (page << OOB_SHIFT), s->io + PAGE_SIZE - off,
MIN(OOB_SIZE, off + s->iolen - PAGE_SIZE));
}
return;
}
- memcpy(iobuf + soff, s->io, s->iolen);
+ mem_and(iobuf + soff, s->io, s->iolen);
if (bdrv_write(s->bdrv, sector, iobuf, PAGE_SECTORS + 2) == -1)
printf("%s: write error in sector %" PRIu64 "\n", __func__, sector);
projects / qemu.git / blobdiff