LFU-330-1 imx: add basic i.MX9 support

Add i.MX9 Kconfig and basic files for the new SoC

Signed-off-by: Peng Fan <peng.fan@nxp.com>

5 files changed, 195 insertions, 0 deletions

diff --git a/arch/arm/mach-imx/imx9/Kconfig b/arch/arm/mach-imx/imx9/Kconfig
new file mode 100644
index 0000000000..ce58e41428
--- /dev/null
+++ b/arch/arm/mach-imx/imx9/Kconfig
@@ -0,0 +1,17 @@
+if ARCH_IMX9
+
+config IMX9
+	bool
+	select HAS_CAAM
+	select ROM_UNIFIED_SECTIONS
+
+config IMX93
+	bool
+	select IMX9
+	select ARMV8_SPL_EXCEPTION_VECTORS
+
+config SYS_SOC
+	default "imx9"
+
+endif
+
diff --git a/arch/arm/mach-imx/imx9/Makefile b/arch/arm/mach-imx/imx9/Makefile
new file mode 100644
index 0000000000..773b12ee12
--- /dev/null
+++ b/arch/arm/mach-imx/imx9/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright 2022 NXP
+
+obj-y += lowlevel_init.o
+obj-y += soc.o clock.o
diff --git a/arch/arm/mach-imx/imx9/clock.c b/arch/arm/mach-imx/imx9/clock.c
new file mode 100644
index 0000000000..fe89dccb31
--- /dev/null
+++ b/arch/arm/mach-imx/imx9/clock.c
@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2022 NXP
+ *
+ * Peng Fan <peng.fan@nxp.com>
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <div64.h>
+#include <errno.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <log.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+u32 get_lpuart_clk(void)
+{
+	return 24000000;
+}
+
diff --git a/arch/arm/mach-imx/imx9/lowlevel_init.S b/arch/arm/mach-imx/imx9/lowlevel_init.S
new file mode 100644
index 0000000000..1dc1dbfcdd
--- /dev/null
+++ b/arch/arm/mach-imx/imx9/lowlevel_init.S
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2022 NXP
+ */
+
+#include <config.h>
+
+.align 8
+.global rom_pointer
+rom_pointer:
+	.space 256
+
+/*
+ * Routine: save_boot_params (called after reset from start.S)
+ */
+
+.global save_boot_params
+save_boot_params:
+#ifndef CONFIG_SPL_BUILD
+	/* The firmware provided ATAG/FDT address can be found in r2/x0 */
+	adr	x0, rom_pointer
+	stp	x1, x2, [x0], #16
+	stp	x3, x4, [x0], #16
+#endif
+	/* Returns */
+	b	save_boot_params_ret
diff --git a/arch/arm/mach-imx/imx9/soc.c b/arch/arm/mach-imx/imx9/soc.c
new file mode 100644
index 0000000000..55fd6df861
--- /dev/null
+++ b/arch/arm/mach-imx/imx9/soc.c
@@ -0,0 +1,119 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2022 NXP
+ *
+ * Peng Fan <peng.fan@nxp.com>
+ */
+
+#include <common.h>
+#include <cpu_func.h>
+#include <init.h>
+#include <log.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/mach-imx/boot_mode.h>
+#include <asm/mach-imx/syscounter.h>
+#include <asm/armv8/mmu.h>
+#include <dm/uclass.h>
+#include <env.h>
+#include <env_internal.h>
+#include <errno.h>
+#include <fdt_support.h>
+#include <linux/bitops.h>
+#include <asm/setup.h>
+#include <asm/bootm.h>
+#include <asm/arch-imx/cpu.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+u32 get_cpu_rev(void)
+{
+	return (MXC_CPU_IMX93 << 12) | CHIP_REV_1_0;
+}
+
+static struct mm_region imx93_mem_map[] = {
+	{
+		/* ROM */
+		.virt = 0x0UL,
+		.phys = 0x0UL,
+		.size = 0x100000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+			 PTE_BLOCK_OUTER_SHARE
+	}, {
+		/* OCRAM */
+		.virt = 0x20480000UL,
+		.phys = 0x20480000UL,
+		.size = 0xA0000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+			 PTE_BLOCK_OUTER_SHARE
+	}, {
+		/* AIPS */
+		.virt = 0x40000000UL,
+		.phys = 0x40000000UL,
+		.size = 0x40000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE |
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
+		/* DRAM1 */
+		.virt = 0x80000000UL,
+		.phys = 0x80000000UL,
+		.size = PHYS_SDRAM_SIZE,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+			 PTE_BLOCK_OUTER_SHARE
+	}, {
+		/* empty entrie to split table entry 5 if needed when TEEs are used */
+		0,
+	}, {
+		/* List terminator */
+		0,
+	}
+};
+
+struct mm_region *mem_map = imx93_mem_map;
+
+int dram_init(void)
+{
+	gd->ram_size = PHYS_SDRAM_SIZE;
+
+	return 0;
+}
+
+#if !CONFIG_IS_ENABLED(SYSRESET)
+void reset_cpu(ulong addr)
+{
+	while (1) {
+	}
+}
+#endif
+
+int print_cpuinfo(void)
+{
+	u32 cpurev;
+
+	cpurev = get_cpu_rev();
+
+	printf("CPU:   i.MX93 rev%d.%d\n", (cpurev & 0x000F0) >> 4, (cpurev & 0x0000F) >> 0);
+
+	return 0;
+
+}
+
+int arch_misc_init(void)
+{
+	return 0;
+}
+
+int ft_system_setup(void *blob, struct bd_info *bd)
+{
+	return 0;
+}
+
+int arch_cpu_init(void)
+{
+	return 0;
+}
+