Initial imx93 support

Same LPUART as imx8qxp. Timers seem new and needs a new driver.
For now, use ARM generic timer when KernelArmExportPCNTUser and
KernelArmExportPTMRUser are enabled.

Signed-off-by: Indan Zupancic <[email protected]>

libplatsupport/CMakeLists.txt

@@ -84,7 +84,7 @@ else()
     message(FATAL_ERROR "Unsupported KernelArch '${KernelArch}'")
 endif()
 
-if(KernelPlatformQEMUArmVirt OR KernelPlatformQuartz64)
+if(KernelPlatformQEMUArmVirt OR KernelPlatformQuartz64 OR KernelPlatformIMX93)
     if(KernelArmExportPCNTUser AND KernelArmExportPTMRUser)
         list(APPEND deps src/arch/arm/generic_ltimer.c)
     endif()

libplatsupport/plat_include/imx93/platsupport/plat/clock.h

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2024, Indan Zupancic
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#pragma once
+
+enum clk_id {
+    NCLOCKS,
+};
+
+enum clock_gate {
+    NCLKGATES
+};

libplatsupport/plat_include/imx93/platsupport/plat/i2c.h

@@ -0,0 +1,10 @@
+/*
+ * Copyright 2024, Indan Zupancic
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#pragma once
+
+enum i2c_id {
+    NI2C
+};

libplatsupport/plat_include/imx93/platsupport/plat/serial.h

@@ -0,0 +1,21 @@
+/*
+ * Copyright 2024, Indan Zupancic
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#pragma once
+
+enum chardev_id {
+    PS_SERIAL0,
+    PS_SERIAL1,
+    PS_SERIAL2,
+    PS_SERIAL3,
+    PS_SERIAL4,
+    PS_SERIAL5,
+    PS_SERIAL6,
+    PS_SERIAL7,
+
+    NUM_CHARDEV,
+
+    PS_SERIAL_DEFAULT = PS_SERIAL0
+};

libplatsupport/src/plat/imx93/chardev.c

@@ -0,0 +1,70 @@
+/*
+ * Copyright 2024, Indan Zupancic
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#include "../../chardev.h"
+
+static const struct dev_defn lpuart[NUM_CHARDEV] = {
+    {
+        .id = PS_SERIAL0,
+        .paddr = 0x44380000,
+        .size = 4096,
+        .init_fn = uart_init
+    },
+    {
+        .id = PS_SERIAL1,
+        .paddr = 0x44390000,
+        .size = 4096,
+        .init_fn = uart_init
+    },
+    {
+        .id = PS_SERIAL2,
+        .paddr = 0x42570000,
+        .size = 4096,
+        .init_fn = uart_init
+    },
+    {
+        .id = PS_SERIAL3,
+        .paddr = 0x42580000,
+        .size = 4096,
+        .init_fn = uart_init
+    },
+    {
+        .id = PS_SERIAL4,
+        .paddr = 0x42590000,
+        .size = 4096,
+        .init_fn = uart_init
+    },
+    {
+        .id = PS_SERIAL5,
+        .paddr = 0x425a0000,
+        .size = 4096,
+        .init_fn = uart_init
+    },
+    {
+        .id = PS_SERIAL6,
+        .paddr = 0x42690000,
+        .size = 4096,
+        .init_fn = uart_init,
+    },
+    {
+        .id = PS_SERIAL7,
+        .paddr = 0x426a0000,
+        .size = 4096,
+        .init_fn = uart_init,
+    }
+};
+
+struct ps_chardevice *
+ps_cdev_init(enum chardev_id id, const ps_io_ops_t *ops, struct ps_chardevice *dev)
+{
+    if (id < PS_SERIAL0 || id >= NUM_CHARDEV) {
+        return NULL;
+    }
+    if (lpuart[id].init_fn(&lpuart[id], ops, dev)) {
+        return NULL;
+    }
+    return dev;
+}
+

libplatsupport/src/plat/imx93/serial.c

@@ -0,0 +1 @@
+../tqma8xqp1gb/serial.c

libplatsupport/src/plat/tqma8xqp1gb/serial.c

@@ -18,6 +18,8 @@
  *   i.MX 8DualX/8DualXPlus/8QuadXPlus Applications Processor Reference Manual
  *   Revision 0 (IMX8DQXPRM.pdf)
  *   Chapter 16.13 (page 7908)
+ *
+ * Same LPUART is used by i.MX93.
  */
 #include <string.h>
 #include <stdlib.h>