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-rw-r--r--drivers/soc/Kconfig16
-rw-r--r--drivers/soc/Makefile3
-rw-r--r--drivers/soc/soc-uclass.c102
-rw-r--r--drivers/soc/soc_sandbox.c56
-rw-r--r--drivers/soc/soc_ti_k3.c124
5 files changed, 301 insertions, 0 deletions
diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig
index 7b4e4d6130..864d00a885 100644
--- a/drivers/soc/Kconfig
+++ b/drivers/soc/Kconfig
@@ -1,5 +1,21 @@
menu "SOC (System On Chip) specific Drivers"
+config SOC_DEVICE
+ bool "Enable SoC Device ID drivers using Driver Model"
+ help
+ This allows drivers to be provided for SoCs to help in identifying
+ the SoC in use and matching SoC attributes for selecting SoC
+ specific data. This is useful for other device drivers that may
+ need different parameters or quirks enabled depending on the
+ specific device variant in use.
+
+config SOC_DEVICE_TI_K3
+ depends on SOC_DEVICE
+ bool "Enable SoC Device ID driver for TI K3 SoCs"
+ help
+ This allows Texas Instruments Keystone 3 SoCs to identify
+ specifics about the SoC in use.
+
source "drivers/soc/ti/Kconfig"
endmenu
diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile
index ce253b7aa8..9ef20ca506 100644
--- a/drivers/soc/Makefile
+++ b/drivers/soc/Makefile
@@ -3,3 +3,6 @@
# Makefile for the U-Boot SOC specific device drivers.
obj-$(CONFIG_SOC_TI) += ti/
+obj-$(CONFIG_SOC_DEVICE) += soc-uclass.o
+obj-$(CONFIG_SOC_DEVICE_TI_K3) += soc_ti_k3.o
+obj-$(CONFIG_SANDBOX) += soc_sandbox.o
diff --git a/drivers/soc/soc-uclass.c b/drivers/soc/soc-uclass.c
new file mode 100644
index 0000000000..c32d647864
--- /dev/null
+++ b/drivers/soc/soc-uclass.c
@@ -0,0 +1,102 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2020 - Texas Instruments Incorporated - http://www.ti.com/
+ * Dave Gerlach <d-gerlach@ti.com>
+ */
+
+#include <common.h>
+#include <soc.h>
+#include <dm.h>
+#include <errno.h>
+#include <dm/lists.h>
+#include <dm/root.h>
+
+int soc_get(struct udevice **devp)
+{
+ return uclass_first_device_err(UCLASS_SOC, devp);
+}
+
+int soc_get_machine(struct udevice *dev, char *buf, int size)
+{
+ struct soc_ops *ops = soc_get_ops(dev);
+
+ if (!ops->get_machine)
+ return -ENOSYS;
+
+ return ops->get_machine(dev, buf, size);
+}
+
+int soc_get_family(struct udevice *dev, char *buf, int size)
+{
+ struct soc_ops *ops = soc_get_ops(dev);
+
+ if (!ops->get_family)
+ return -ENOSYS;
+
+ return ops->get_family(dev, buf, size);
+}
+
+int soc_get_revision(struct udevice *dev, char *buf, int size)
+{
+ struct soc_ops *ops = soc_get_ops(dev);
+
+ if (!ops->get_revision)
+ return -ENOSYS;
+
+ return ops->get_revision(dev, buf, size);
+}
+
+const struct soc_attr *
+soc_device_match(const struct soc_attr *matches)
+{
+ bool match;
+ struct udevice *soc;
+ char str[SOC_MAX_STR_SIZE];
+
+ if (!matches)
+ return NULL;
+
+ if (soc_get(&soc))
+ return NULL;
+
+ while (1) {
+ if (!(matches->machine || matches->family ||
+ matches->revision))
+ break;
+
+ match = true;
+
+ if (matches->machine) {
+ if (!soc_get_machine(soc, str, SOC_MAX_STR_SIZE)) {
+ if (strcmp(matches->machine, str))
+ match = false;
+ }
+ }
+
+ if (matches->family) {
+ if (!soc_get_family(soc, str, SOC_MAX_STR_SIZE)) {
+ if (strcmp(matches->family, str))
+ match = false;
+ }
+ }
+
+ if (matches->revision) {
+ if (!soc_get_revision(soc, str, SOC_MAX_STR_SIZE)) {
+ if (strcmp(matches->revision, str))
+ match = false;
+ }
+ }
+
+ if (match)
+ return matches;
+
+ matches++;
+ }
+
+ return NULL;
+}
+
+UCLASS_DRIVER(soc) = {
+ .id = UCLASS_SOC,
+ .name = "soc",
+};
diff --git a/drivers/soc/soc_sandbox.c b/drivers/soc/soc_sandbox.c
new file mode 100644
index 0000000000..5c82ad84fc
--- /dev/null
+++ b/drivers/soc/soc_sandbox.c
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Sandbox driver for the SOC uclass
+ *
+ * (C) Copyright 2020 - Texas Instruments Incorporated - http://www.ti.com/
+ * Dave Gerlach <d-gerlach@ti.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <soc.h>
+
+int soc_sandbox_get_family(struct udevice *dev, char *buf, int size)
+{
+ snprintf(buf, size, "SANDBOX1xx");
+
+ return 0;
+}
+
+int soc_sandbox_get_machine(struct udevice *dev, char *buf, int size)
+{
+ snprintf(buf, size, "SANDBOX123");
+
+ return 0;
+}
+
+int soc_sandbox_get_revision(struct udevice *dev, char *buf, int size)
+{
+ snprintf(buf, size, "1.0");
+
+ return 0;
+}
+
+static const struct soc_ops soc_sandbox_ops = {
+ .get_family = soc_sandbox_get_family,
+ .get_revision = soc_sandbox_get_revision,
+ .get_machine = soc_sandbox_get_machine,
+};
+
+int soc_sandbox_probe(struct udevice *dev)
+{
+ return 0;
+}
+
+static const struct udevice_id soc_sandbox_ids[] = {
+ { .compatible = "sandbox,soc" },
+ { }
+};
+
+U_BOOT_DRIVER(soc_sandbox) = {
+ .name = "soc_sandbox",
+ .id = UCLASS_SOC,
+ .ops = &soc_sandbox_ops,
+ .of_match = soc_sandbox_ids,
+ .probe = soc_sandbox_probe,
+};
diff --git a/drivers/soc/soc_ti_k3.c b/drivers/soc/soc_ti_k3.c
new file mode 100644
index 0000000000..ae23ef7475
--- /dev/null
+++ b/drivers/soc/soc_ti_k3.c
@@ -0,0 +1,124 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
+ * Dave Gerlach <d-gerlach@ti.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <soc.h>
+
+#include <asm/io.h>
+
+#define AM65X 0xbb5a
+#define J721E 0xbb64
+
+#define REV_SR1_0 0
+#define REV_SR2_0 1
+
+#define JTAG_ID_VARIANT_SHIFT 28
+#define JTAG_ID_VARIANT_MASK (0xf << 28)
+#define JTAG_ID_PARTNO_SHIFT 12
+#define JTAG_ID_PARTNO_MASK (0xffff << 12)
+
+struct soc_ti_k3_platdata {
+ const char *family;
+ const char *revision;
+};
+
+static const char *get_family_string(u32 idreg)
+{
+ const char *family;
+ u32 soc;
+
+ soc = (idreg & JTAG_ID_PARTNO_MASK) >> JTAG_ID_PARTNO_SHIFT;
+
+ switch (soc) {
+ case AM65X:
+ family = "AM65X";
+ break;
+ case J721E:
+ family = "J721E";
+ break;
+ default:
+ family = "Unknown Silicon";
+ };
+
+ return family;
+}
+
+static const char *get_rev_string(u32 idreg)
+{
+ const char *revision;
+ u32 rev;
+
+ rev = (idreg & JTAG_ID_VARIANT_MASK) >> JTAG_ID_VARIANT_SHIFT;
+
+ switch (rev) {
+ case REV_SR1_0:
+ revision = "1.0";
+ break;
+ case REV_SR2_0:
+ revision = "2.0";
+ break;
+ default:
+ revision = "Unknown Revision";
+ };
+
+ return revision;
+}
+
+static int soc_ti_k3_get_family(struct udevice *dev, char *buf, int size)
+{
+ struct soc_ti_k3_platdata *plat = dev_get_platdata(dev);
+
+ snprintf(buf, size, "%s", plat->family);
+
+ return 0;
+}
+
+static int soc_ti_k3_get_revision(struct udevice *dev, char *buf, int size)
+{
+ struct soc_ti_k3_platdata *plat = dev_get_platdata(dev);
+
+ snprintf(buf, size, "SR%s", plat->revision);
+
+ return 0;
+}
+
+static const struct soc_ops soc_ti_k3_ops = {
+ .get_family = soc_ti_k3_get_family,
+ .get_revision = soc_ti_k3_get_revision,
+};
+
+int soc_ti_k3_probe(struct udevice *dev)
+{
+ struct soc_ti_k3_platdata *plat = dev_get_platdata(dev);
+ u32 idreg;
+ void *idreg_addr;
+
+ idreg_addr = dev_read_addr_ptr(dev);
+ if (!idreg_addr)
+ return -EINVAL;
+
+ idreg = readl(idreg_addr);
+
+ plat->family = get_family_string(idreg);
+ plat->revision = get_rev_string(idreg);
+
+ return 0;
+}
+
+static const struct udevice_id soc_ti_k3_ids[] = {
+ { .compatible = "ti,am654-chipid" },
+ { }
+};
+
+U_BOOT_DRIVER(soc_ti_k3) = {
+ .name = "soc_ti_k3",
+ .id = UCLASS_SOC,
+ .ops = &soc_ti_k3_ops,
+ .of_match = soc_ti_k3_ids,
+ .probe = soc_ti_k3_probe,
+ .platdata_auto_alloc_size = sizeof(struct soc_ti_k3_platdata),
+};
generated by cgit (git 2.34.1) at 2025-01-24 17:45:35 +0000