if (plat->ich_version == ICHV_7) {
struct ich7_spi_regs *ich7_spi = sbase;
- ich7_spi = (struct ich7_spi_regs *)sbase;
- ctlr->ichspi_lock = readw(&ich7_spi->spis) & SPIS_LOCK;
ctlr->opmenu = offsetof(struct ich7_spi_regs, opmenu);
ctlr->menubytes = sizeof(ich7_spi->opmenu);
ctlr->optype = offsetof(struct ich7_spi_regs, optype);
} else if (plat->ich_version == ICHV_9) {
struct ich9_spi_regs *ich9_spi = sbase;
- ctlr->ichspi_lock = readw(&ich9_spi->hsfs) & HSFS_FLOCKDN;
ctlr->opmenu = offsetof(struct ich9_spi_regs, opmenu);
ctlr->menubytes = sizeof(ich9_spi->opmenu);
ctlr->optype = offsetof(struct ich9_spi_regs, optype);
trans->bytesin -= bytes;
}
+static bool spi_lock_status(struct ich_spi_platdata *plat, void *sbase)
+{
+ int lock = 0;
+
+ if (plat->ich_version == ICHV_7) {
+ struct ich7_spi_regs *ich7_spi = sbase;
+
+ lock = readw(&ich7_spi->spis) & SPIS_LOCK;
+ } else if (plat->ich_version == ICHV_9) {
+ struct ich9_spi_regs *ich9_spi = sbase;
+
+ lock = readw(&ich9_spi->hsfs) & HSFS_FLOCKDN;
+ }
+
+ return lock != 0;
+}
+
static void spi_setup_type(struct spi_trans *trans, int data_bytes)
{
trans->type = 0xFF;
}
}
-static int spi_setup_opcode(struct ich_spi_priv *ctlr, struct spi_trans *trans)
+static int spi_setup_opcode(struct ich_spi_priv *ctlr, struct spi_trans *trans,
+ bool lock)
{
uint16_t optypes;
uint8_t opmenu[ctlr->menubytes];
trans->opcode = trans->out[0];
spi_use_out(trans, 1);
- if (!ctlr->ichspi_lock) {
+ if (!lock) {
/* The lock is off, so just use index 0. */
ich_writeb(ctlr, trans->opcode, ctlr->opmenu);
optypes = ich_readw(ctlr, ctlr->optype);
struct spi_trans *trans = &ctlr->trans;
unsigned type = flags & (SPI_XFER_BEGIN | SPI_XFER_END);
int using_cmd = 0;
+ bool lock = spi_lock_status(plat, ctlr->base);
int ret;
/* We don't support writing partial bytes */
ich_writeb(ctlr, SPIS_CDS | SPIS_FCERR, ctlr->status);
spi_setup_type(trans, using_cmd ? bytes : 0);
- opcode_index = spi_setup_opcode(ctlr, trans);
+ opcode_index = spi_setup_opcode(ctlr, trans, lock);
if (opcode_index < 0)
return -EINVAL;
with_address = spi_setup_offset(trans);
* in order to prevent the Management Engine from
* issuing a transaction between WREN and DATA.
*/
- if (!ctlr->ichspi_lock)
+ if (!lock)
ich_writew(ctlr, trans->opcode, ctlr->preop);
return 0;
}
return 0;
}
-/*
- * This uses the SPI controller from the Intel Cougar Point and Panther Point
- * PCH to write-protect portions of the SPI flash until reboot. The changes
- * don't actually take effect until the HSFS[FLOCKDN] bit is set, but that's
- * done elsewhere.
- */
-int spi_write_protect_region(struct udevice *dev, uint32_t lower_limit,
- uint32_t length, int hint)
-{
- struct udevice *bus = dev->parent;
- struct ich_spi_priv *ctlr = dev_get_priv(bus);
- uint32_t tmplong;
- uint32_t upper_limit;
-
- if (!ctlr->pr) {
- printf("%s: operation not supported on this chipset\n",
- __func__);
- return -ENOSYS;
- }
-
- if (length == 0 ||
- lower_limit > (0xFFFFFFFFUL - length) + 1 ||
- hint < 0 || hint > 4) {
- printf("%s(0x%x, 0x%x, %d): invalid args\n", __func__,
- lower_limit, length, hint);
- return -EPERM;
- }
-
- upper_limit = lower_limit + length - 1;
-
- /*
- * Determine bits to write, as follows:
- * 31 Write-protection enable (includes erase operation)
- * 30:29 reserved
- * 28:16 Upper Limit (FLA address bits 24:12, with 11:0 == 0xfff)
- * 15 Read-protection enable
- * 14:13 reserved
- * 12:0 Lower Limit (FLA address bits 24:12, with 11:0 == 0x000)
- */
- tmplong = 0x80000000 |
- ((upper_limit & 0x01fff000) << 4) |
- ((lower_limit & 0x01fff000) >> 12);
-
- printf("%s: writing 0x%08x to %p\n", __func__, tmplong,
- &ctlr->pr[hint]);
- ctlr->pr[hint] = tmplong;
-
- return 0;
-}
-
static int ich_spi_probe(struct udevice *dev)
{
struct ich_spi_platdata *plat = dev_get_platdata(dev);
return 0;
}
+static int ich_spi_remove(struct udevice *bus)
+{
+ struct ich_spi_priv *ctlr = dev_get_priv(bus);
+
+ /*
+ * Configure SPI controller so that the Linux MTD driver can fully
+ * access the SPI NOR chip
+ */
+ ich_writew(ctlr, SPI_OPPREFIX, ctlr->preop);
+ ich_writew(ctlr, SPI_OPTYPE, ctlr->optype);
+ ich_writel(ctlr, SPI_OPMENU_LOWER, ctlr->opmenu);
+ ich_writel(ctlr, SPI_OPMENU_UPPER, ctlr->opmenu + sizeof(u32));
+
+ return 0;
+}
+
static int ich_spi_set_speed(struct udevice *bus, uint speed)
{
struct ich_spi_priv *priv = dev_get_priv(bus);
.priv_auto_alloc_size = sizeof(struct ich_spi_priv),
.child_pre_probe = ich_spi_child_pre_probe,
.probe = ich_spi_probe,
+ .remove = ich_spi_remove,
+ .flags = DM_FLAG_OS_PREPARE,
};
projects / u-boot / blobdiff