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path: root/hw/block/pflash_cfi01.c
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Diffstat (limited to 'hw/block/pflash_cfi01.c')
-rw-r--r--hw/block/pflash_cfi01.c204
1 files changed, 77 insertions, 127 deletions
diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c
index d282695086..2ba6c77293 100644
--- a/hw/block/pflash_cfi01.c
+++ b/hw/block/pflash_cfi01.c
@@ -64,6 +64,9 @@ do { \
#define TYPE_CFI_PFLASH01 "cfi.pflash01"
#define CFI_PFLASH01(obj) OBJECT_CHECK(pflash_t, (obj), TYPE_CFI_PFLASH01)
+#define PFLASH_BE 0
+#define PFLASH_SECURE 1
+
struct pflash_t {
/*< private >*/
SysBusDevice parent_obj;
@@ -75,7 +78,7 @@ struct pflash_t {
uint8_t bank_width;
uint8_t device_width; /* If 0, device width not specified. */
uint8_t max_device_width; /* max device width in bytes */
- uint8_t be;
+ uint32_t features;
uint8_t wcycle; /* if 0, the flash is read normally */
int ro;
uint8_t cmd;
@@ -235,12 +238,57 @@ static uint32_t pflash_devid_query(pflash_t *pfl, hwaddr offset)
return resp;
}
+static uint32_t pflash_data_read(pflash_t *pfl, hwaddr offset,
+ int width, int be)
+{
+ uint8_t *p;
+ uint32_t ret;
+
+ p = pfl->storage;
+ switch (width) {
+ case 1:
+ ret = p[offset];
+ DPRINTF("%s: data offset " TARGET_FMT_plx " %02x\n",
+ __func__, offset, ret);
+ break;
+ case 2:
+ if (be) {
+ ret = p[offset] << 8;
+ ret |= p[offset + 1];
+ } else {
+ ret = p[offset];
+ ret |= p[offset + 1] << 8;
+ }
+ DPRINTF("%s: data offset " TARGET_FMT_plx " %04x\n",
+ __func__, offset, ret);
+ break;
+ case 4:
+ 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 " TARGET_FMT_plx " %08x\n",
+ __func__, offset, ret);
+ break;
+ default:
+ DPRINTF("BUG in %s\n", __func__);
+ abort();
+ }
+ return ret;
+}
+
static uint32_t pflash_read (pflash_t *pfl, hwaddr offset,
int width, int be)
{
hwaddr boff;
uint32_t ret;
- uint8_t *p;
ret = -1;
@@ -257,43 +305,7 @@ static uint32_t pflash_read (pflash_t *pfl, hwaddr offset,
/* fall through to read code */
case 0x00:
/* Flash area read */
- p = pfl->storage;
- switch (width) {
- case 1:
- ret = p[offset];
- DPRINTF("%s: data offset " TARGET_FMT_plx " %02x\n",
- __func__, offset, ret);
- break;
- case 2:
- if (be) {
- ret = p[offset] << 8;
- ret |= p[offset + 1];
- } else {
- ret = p[offset];
- ret |= p[offset + 1] << 8;
- }
- DPRINTF("%s: data offset " TARGET_FMT_plx " %04x\n",
- __func__, offset, ret);
- break;
- case 4:
- 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 " TARGET_FMT_plx " %08x\n",
- __func__, offset, ret);
- break;
- default:
- DPRINTF("BUG in %s\n", __func__);
- }
-
+ ret = pflash_data_read(pfl, offset, width, be);
break;
case 0x10: /* Single byte program */
case 0x20: /* Block erase */
@@ -648,101 +660,37 @@ static void pflash_write(pflash_t *pfl, hwaddr offset,
}
-static uint32_t pflash_readb_be(void *opaque, hwaddr addr)
-{
- return pflash_read(opaque, addr, 1, 1);
-}
-
-static uint32_t pflash_readb_le(void *opaque, hwaddr addr)
-{
- return pflash_read(opaque, addr, 1, 0);
-}
-
-static uint32_t pflash_readw_be(void *opaque, hwaddr addr)
-{
- pflash_t *pfl = opaque;
-
- return pflash_read(pfl, addr, 2, 1);
-}
-
-static uint32_t pflash_readw_le(void *opaque, hwaddr addr)
-{
- pflash_t *pfl = opaque;
-
- return pflash_read(pfl, addr, 2, 0);
-}
-
-static uint32_t pflash_readl_be(void *opaque, hwaddr addr)
-{
- pflash_t *pfl = opaque;
-
- return pflash_read(pfl, addr, 4, 1);
-}
-
-static uint32_t pflash_readl_le(void *opaque, hwaddr addr)
+static MemTxResult pflash_mem_read_with_attrs(void *opaque, hwaddr addr, uint64_t *value,
+ unsigned len, MemTxAttrs attrs)
{
pflash_t *pfl = opaque;
+ bool be = !!(pfl->features & (1 << PFLASH_BE));
- return pflash_read(pfl, addr, 4, 0);
-}
-
-static void pflash_writeb_be(void *opaque, hwaddr addr,
- uint32_t value)
-{
- pflash_write(opaque, addr, value, 1, 1);
-}
-
-static void pflash_writeb_le(void *opaque, hwaddr addr,
- uint32_t value)
-{
- pflash_write(opaque, addr, value, 1, 0);
-}
-
-static void pflash_writew_be(void *opaque, hwaddr addr,
- uint32_t value)
-{
- pflash_t *pfl = opaque;
-
- pflash_write(pfl, addr, value, 2, 1);
-}
-
-static void pflash_writew_le(void *opaque, hwaddr addr,
- uint32_t value)
-{
- pflash_t *pfl = opaque;
-
- pflash_write(pfl, addr, value, 2, 0);
-}
-
-static void pflash_writel_be(void *opaque, hwaddr addr,
- uint32_t value)
-{
- pflash_t *pfl = opaque;
-
- pflash_write(pfl, addr, value, 4, 1);
+ if ((pfl->features & (1 << PFLASH_SECURE)) && !attrs.secure) {
+ *value = pflash_data_read(opaque, addr, len, be);
+ } else {
+ *value = pflash_read(opaque, addr, len, be);
+ }
+ return MEMTX_OK;
}
-static void pflash_writel_le(void *opaque, hwaddr addr,
- uint32_t value)
+static MemTxResult pflash_mem_write_with_attrs(void *opaque, hwaddr addr, uint64_t value,
+ unsigned len, MemTxAttrs attrs)
{
pflash_t *pfl = opaque;
+ bool be = !!(pfl->features & (1 << PFLASH_BE));
- pflash_write(pfl, addr, value, 4, 0);
+ if ((pfl->features & (1 << PFLASH_SECURE)) && !attrs.secure) {
+ return MEMTX_ERROR;
+ } else {
+ pflash_write(opaque, addr, value, len, be);
+ return MEMTX_OK;
+ }
}
-static const MemoryRegionOps pflash_cfi01_ops_be = {
- .old_mmio = {
- .read = { pflash_readb_be, pflash_readw_be, pflash_readl_be, },
- .write = { pflash_writeb_be, pflash_writew_be, pflash_writel_be, },
- },
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-static const MemoryRegionOps pflash_cfi01_ops_le = {
- .old_mmio = {
- .read = { pflash_readb_le, pflash_readw_le, pflash_readl_le, },
- .write = { pflash_writeb_le, pflash_writew_le, pflash_writel_le, },
- },
+static const MemoryRegionOps pflash_cfi01_ops = {
+ .read_with_attrs = pflash_mem_read_with_attrs,
+ .write_with_attrs = pflash_mem_write_with_attrs,
.endianness = DEVICE_NATIVE_ENDIAN,
};
@@ -773,7 +721,8 @@ static void pflash_cfi01_realize(DeviceState *dev, Error **errp)
memory_region_init_rom_device(
&pfl->mem, OBJECT(dev),
- pfl->be ? &pflash_cfi01_ops_be : &pflash_cfi01_ops_le, pfl,
+ &pflash_cfi01_ops,
+ pfl,
pfl->name, total_len, &local_err);
if (local_err) {
error_propagate(errp, local_err);
@@ -925,7 +874,8 @@ static Property pflash_cfi01_properties[] = {
DEFINE_PROP_UINT8("width", struct pflash_t, bank_width, 0),
DEFINE_PROP_UINT8("device-width", struct pflash_t, device_width, 0),
DEFINE_PROP_UINT8("max-device-width", struct pflash_t, max_device_width, 0),
- DEFINE_PROP_UINT8("big-endian", struct pflash_t, be, 0),
+ DEFINE_PROP_BIT("big-endian", struct pflash_t, features, PFLASH_BE, 0),
+ DEFINE_PROP_BIT("secure", struct pflash_t, features, PFLASH_SECURE, 0),
DEFINE_PROP_UINT16("id0", struct pflash_t, ident0, 0),
DEFINE_PROP_UINT16("id1", struct pflash_t, ident1, 0),
DEFINE_PROP_UINT16("id2", struct pflash_t, ident2, 0),
@@ -975,7 +925,7 @@ pflash_t *pflash_cfi01_register(hwaddr base,
qdev_prop_set_uint32(dev, "num-blocks", nb_blocs);
qdev_prop_set_uint64(dev, "sector-length", sector_len);
qdev_prop_set_uint8(dev, "width", bank_width);
- qdev_prop_set_uint8(dev, "big-endian", !!be);
+ qdev_prop_set_bit(dev, "big-endian", !!be);
qdev_prop_set_uint16(dev, "id0", id0);
qdev_prop_set_uint16(dev, "id1", id1);
qdev_prop_set_uint16(dev, "id2", id2);
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-21 07:42:26 +0000