#define DPRINTF(fmt, ...) do { } while (0)
#endif
+#define PFLASH_LAZY_ROMD_THRESHOLD 42
+
struct pflash_t {
BlockDriverState *bs;
target_phys_addr_t base;
ram_addr_t off;
int fl_mem;
int rom_mode;
+ int read_counter; /* used for lazy switch-back to rom mode */
void *storage;
};
pfl->cmd = 0;
}
-static uint32_t pflash_read (pflash_t *pfl, target_phys_addr_t offset, int width)
+static uint32_t pflash_read (pflash_t *pfl, target_phys_addr_t offset,
+ int width, int be)
{
target_phys_addr_t boff;
uint32_t ret;
DPRINTF("%s: offset " TARGET_FMT_plx "\n", __func__, offset);
ret = -1;
- if (pfl->rom_mode) {
- /* Lazy reset of to ROMD mode */
- if (pfl->wcycle == 0)
- pflash_register_memory(pfl, 1);
+ /* Lazy reset to ROMD mode after a certain amount of read accesses */
+ if (!pfl->rom_mode && pfl->wcycle == 0 &&
+ ++pfl->read_counter > PFLASH_LAZY_ROMD_THRESHOLD) {
+ pflash_register_memory(pfl, 1);
}
offset &= pfl->chip_len - 1;
boff = offset & 0xFF;
// DPRINTF("%s: data offset %08x %02x\n", __func__, offset, ret);
break;
case 2:
-#if defined(TARGET_WORDS_BIGENDIAN)
- ret = p[offset] << 8;
- ret |= p[offset + 1];
-#else
- ret = p[offset];
- ret |= p[offset + 1] << 8;
-#endif
+ if (be) {
+ ret = p[offset] << 8;
+ ret |= p[offset + 1];
+ } else {
+ ret = p[offset];
+ ret |= p[offset + 1] << 8;
+ }
// DPRINTF("%s: data offset %08x %04x\n", __func__, offset, ret);
break;
case 4:
-#if defined(TARGET_WORDS_BIGENDIAN)
- ret = p[offset] << 24;
- ret |= p[offset + 1] << 16;
- ret |= p[offset + 2] << 8;
- ret |= p[offset + 3];
-#else
- ret = p[offset];
- ret |= p[offset + 1] << 8;
- ret |= p[offset + 2] << 16;
- ret |= p[offset + 3] << 24;
-#endif
+ if (be) {
+ ret = p[offset] << 24;
+ ret |= p[offset + 1] << 16;
+ ret |= p[offset + 2] << 8;
+ ret |= p[offset + 3];
+ } else {
+ ret = p[offset];
+ ret |= p[offset + 1] << 8;
+ ret |= p[offset + 2] << 16;
+ ret |= p[offset + 3] << 24;
+ }
// DPRINTF("%s: data offset %08x %08x\n", __func__, offset, ret);
break;
}
}
static void pflash_write (pflash_t *pfl, target_phys_addr_t offset,
- uint32_t value, int width)
+ uint32_t value, int width, int be)
{
target_phys_addr_t boff;
uint8_t *p;
/* Set the device in I/O access mode if required */
if (pfl->rom_mode)
pflash_register_memory(pfl, 0);
+ pfl->read_counter = 0;
/* We're in read mode */
check_unlock0:
if (boff == 0x55 && cmd == 0x98) {
pflash_update(pfl, offset, 1);
break;
case 2:
-#if defined(TARGET_WORDS_BIGENDIAN)
- p[offset] &= value >> 8;
- p[offset + 1] &= value;
-#else
- p[offset] &= value;
- p[offset + 1] &= value >> 8;
-#endif
+ if (be) {
+ p[offset] &= value >> 8;
+ p[offset + 1] &= value;
+ } else {
+ p[offset] &= value;
+ p[offset + 1] &= value >> 8;
+ }
pflash_update(pfl, offset, 2);
break;
case 4:
-#if defined(TARGET_WORDS_BIGENDIAN)
- p[offset] &= value >> 24;
- p[offset + 1] &= value >> 16;
- p[offset + 2] &= value >> 8;
- p[offset + 3] &= value;
-#else
- p[offset] &= value;
- p[offset + 1] &= value >> 8;
- p[offset + 2] &= value >> 16;
- p[offset + 3] &= value >> 24;
-#endif
+ if (be) {
+ p[offset] &= value >> 24;
+ p[offset + 1] &= value >> 16;
+ p[offset + 2] &= value >> 8;
+ p[offset + 3] &= value;
+ } else {
+ p[offset] &= value;
+ p[offset + 1] &= value >> 8;
+ p[offset + 2] &= value >> 16;
+ p[offset + 3] &= value >> 24;
+ }
pflash_update(pfl, offset, 4);
break;
}
pflash_update(pfl, 0, pfl->chip_len);
/* Let's wait 5 seconds before chip erase is done */
qemu_mod_timer(pfl->timer,
- qemu_get_clock(vm_clock) + (get_ticks_per_sec() * 5));
+ qemu_get_clock_ns(vm_clock) + (get_ticks_per_sec() * 5));
break;
case 0x30:
/* Sector erase */
pfl->status = 0x00;
/* Let's wait 1/2 second before sector erase is done */
qemu_mod_timer(pfl->timer,
- qemu_get_clock(vm_clock) + (get_ticks_per_sec() / 2));
+ qemu_get_clock_ns(vm_clock) + (get_ticks_per_sec() / 2));
break;
default:
DPRINTF("%s: invalid command %02x (wc 5)\n", __func__, cmd);
}
-static uint32_t pflash_readb (void *opaque, target_phys_addr_t addr)
+static uint32_t pflash_readb_be(void *opaque, target_phys_addr_t addr)
+{
+ return pflash_read(opaque, addr, 1, 1);
+}
+
+static uint32_t pflash_readb_le(void *opaque, target_phys_addr_t addr)
+{
+ return pflash_read(opaque, addr, 1, 0);
+}
+
+static uint32_t pflash_readw_be(void *opaque, target_phys_addr_t addr)
+{
+ pflash_t *pfl = opaque;
+
+ return pflash_read(pfl, addr, 2, 1);
+}
+
+static uint32_t pflash_readw_le(void *opaque, target_phys_addr_t addr)
+{
+ pflash_t *pfl = opaque;
+
+ return pflash_read(pfl, addr, 2, 0);
+}
+
+static uint32_t pflash_readl_be(void *opaque, target_phys_addr_t addr)
{
- return pflash_read(opaque, addr, 1);
+ pflash_t *pfl = opaque;
+
+ return pflash_read(pfl, addr, 4, 1);
}
-static uint32_t pflash_readw (void *opaque, target_phys_addr_t addr)
+static uint32_t pflash_readl_le(void *opaque, target_phys_addr_t addr)
{
pflash_t *pfl = opaque;
- return pflash_read(pfl, addr, 2);
+ return pflash_read(pfl, addr, 4, 0);
+}
+
+static void pflash_writeb_be(void *opaque, target_phys_addr_t addr,
+ uint32_t value)
+{
+ pflash_write(opaque, addr, value, 1, 1);
}
-static uint32_t pflash_readl (void *opaque, target_phys_addr_t addr)
+static void pflash_writeb_le(void *opaque, target_phys_addr_t addr,
+ uint32_t value)
+{
+ pflash_write(opaque, addr, value, 1, 0);
+}
+
+static void pflash_writew_be(void *opaque, target_phys_addr_t addr,
+ uint32_t value)
{
pflash_t *pfl = opaque;
- return pflash_read(pfl, addr, 4);
+ pflash_write(pfl, addr, value, 2, 1);
}
-static void pflash_writeb (void *opaque, target_phys_addr_t addr,
- uint32_t value)
+static void pflash_writew_le(void *opaque, target_phys_addr_t addr,
+ uint32_t value)
{
- pflash_write(opaque, addr, value, 1);
+ pflash_t *pfl = opaque;
+
+ pflash_write(pfl, addr, value, 2, 0);
}
-static void pflash_writew (void *opaque, target_phys_addr_t addr,
- uint32_t value)
+static void pflash_writel_be(void *opaque, target_phys_addr_t addr,
+ uint32_t value)
{
pflash_t *pfl = opaque;
- pflash_write(pfl, addr, value, 2);
+ pflash_write(pfl, addr, value, 4, 1);
}
-static void pflash_writel (void *opaque, target_phys_addr_t addr,
- uint32_t value)
+static void pflash_writel_le(void *opaque, target_phys_addr_t addr,
+ uint32_t value)
{
pflash_t *pfl = opaque;
- pflash_write(pfl, addr, value, 4);
+ pflash_write(pfl, addr, value, 4, 0);
}
-static CPUWriteMemoryFunc * const pflash_write_ops[] = {
- &pflash_writeb,
- &pflash_writew,
- &pflash_writel,
+static CPUWriteMemoryFunc * const pflash_write_ops_be[] = {
+ &pflash_writeb_be,
+ &pflash_writew_be,
+ &pflash_writel_be,
+};
+
+static CPUReadMemoryFunc * const pflash_read_ops_be[] = {
+ &pflash_readb_be,
+ &pflash_readw_be,
+ &pflash_readl_be,
};
-static CPUReadMemoryFunc * const pflash_read_ops[] = {
- &pflash_readb,
- &pflash_readw,
- &pflash_readl,
+static CPUWriteMemoryFunc * const pflash_write_ops_le[] = {
+ &pflash_writeb_le,
+ &pflash_writew_le,
+ &pflash_writel_le,
+};
+
+static CPUReadMemoryFunc * const pflash_read_ops_le[] = {
+ &pflash_readb_le,
+ &pflash_readw_le,
+ &pflash_readl_le,
};
/* Count trailing zeroes of a 32 bits quantity */
}
if (!(n & 0x1)) {
ret++;
+#if 0 /* This is not necessary as n is never 0 */
n = n >> 1;
+#endif
}
#if 0 /* This is not necessary as n is never 0 */
if (!n)
int nb_blocs, int nb_mappings, int width,
uint16_t id0, uint16_t id1,
uint16_t id2, uint16_t id3,
- uint16_t unlock_addr0, uint16_t unlock_addr1)
+ uint16_t unlock_addr0, uint16_t unlock_addr1,
+ int be)
{
pflash_t *pfl;
int32_t chip_len;
pfl = qemu_mallocz(sizeof(pflash_t));
/* FIXME: Allocate ram ourselves. */
pfl->storage = qemu_get_ram_ptr(off);
- pfl->fl_mem = cpu_register_io_memory(pflash_read_ops, pflash_write_ops,
- pfl);
+ if (be) {
+ pfl->fl_mem = cpu_register_io_memory(pflash_read_ops_be,
+ pflash_write_ops_be,
+ pfl, DEVICE_NATIVE_ENDIAN);
+ } else {
+ pfl->fl_mem = cpu_register_io_memory(pflash_read_ops_le,
+ pflash_write_ops_le,
+ pfl, DEVICE_NATIVE_ENDIAN);
+ }
pfl->off = off;
pfl->base = base;
pfl->chip_len = chip_len;
#else
pfl->ro = 0;
#endif
- pfl->timer = qemu_new_timer(vm_clock, pflash_timer, pfl);
+ pfl->timer = qemu_new_timer_ns(vm_clock, pflash_timer, pfl);
pfl->sector_len = sector_len;
pfl->width = width;
pfl->wcycle = 0;
projects / qemu.git / blobdiff