arm: SC594-SOM-EZKIT initial support

Adds support for Analog Devices' SC594-SOM-EZKIT board. Includes:
- SoC specific configs in mach-sc5xx/Kconfig
- Memory Map for SPL
- SPL config options in common/spl/Kconfig
- Necessary board-specific init functions
- Board-specific Kconfig and environment in board/adi/
- Memory configuration

Co-developed-by: Greg Malysa <greg.malysa@timesys.com>
Signed-off-by: Greg Malysa <greg.malysa@timesys.com>
Co-developed-by: Trevor Woerner <twoerner@gmail.com>
Signed-off-by: Trevor Woerner <twoerner@gmail.com>
Co-developed-by: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
Signed-off-by: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
Co-developed-by: Ian Roberts <ian.roberts@timesys.com>
Signed-off-by: Ian Roberts <ian.roberts@timesys.com>
Signed-off-by: Oliver Gaskell <Oliver.Gaskell@analog.com>

Kconfig

@@ -646,6 +646,7 @@ config TEXT_BASE
 	default 0x4a000000 if SUNXI_MINIMUM_DRAM_MB >= 256
 	default 0x42e00000 if SUNXI_MINIMUM_DRAM_MB >= 64
 	default 0x96000000 if ARCH_SC5XX && SC59X_64
+	default 0xB2200000 if ARCH_SC5XX && SC59X
 	hex "Text Base"
 	help
 	  The address in memory that U-Boot will be copied and executed from

arch/arm/mach-sc5xx/Kconfig

@@ -35,7 +35,7 @@ config SC59X
 	bool "SC59x 32-bit series"
 	select COMMON_CLK_ADI_SC594
 	select CPU_V7A
-	select NOP_PHY
+	select NOP_PHY if PHY
 
 config SC59X_64
 	bool "SC59x 64-bit series"
@@ -49,6 +49,20 @@ config SC59X_64
 
 endchoice
 
+if SC59X
+
+choice
+	prompt "SC59x 32-bit board select"
+
+config TARGET_SC594_SOM_EZKIT
+	bool
+	prompt "SC594-SOM with SOMCRR-EZKIT"
+	select ADI_CARRIER_SOMCRR_EZKIT
+
+endchoice
+
+endif
+
 if SC59X_64
 
 choice
@@ -509,5 +523,6 @@ config PINCTRL_ADI
 
 source "board/adi/sc598-som-ezkit/Kconfig"
 source "board/adi/sc598-som-ezlite/Kconfig"
+source "board/adi/sc594-som-ezkit/Kconfig"
 
 endif

arch/arm/mach-sc5xx/Makefile

@@ -13,6 +13,7 @@ obj-y += soc.o init/
 obj-$(CONFIG_SC57X) += sc57x.o
 obj-$(CONFIG_SC58X) += sc58x.o
 obj-$(CONFIG_SC59X) += sc59x.o
+obj-$(CONFIG_SC59X) += sc59x-spl.o
 obj-$(CONFIG_SC59X_64) += sc59x_64.o
 obj-$(CONFIG_SC59X_64) += sc59x_64-spl.o
 

arch/arm/mach-sc5xx/sc59x-spl.c

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * (C) Copyright 2024 - Analog Devices, Inc.
+ */
+
+#include <asm/arch-adi/sc5xx/spl.h>
+
+// Table 45-14 in sc594 HRM
+const struct adi_boot_args adi_rom_boot_args[] = {
+	// JTAG/no boot
+	[0] = {0, 0, 0},
+	// SPI master, used for qspi as well
+	[1] = {0x60040000, 0x00040000, 0x20620247},
+	// SPI slave
+	[2] = {0, 0, 0x00000212},
+	// UART slave
+	[3] = {0, 0, 0x00000013},
+	// Linkport slave
+	[4] = {0, 0, 0x00000014},
+	// OSPI master
+	[5] = {0x60040000, 0, 0x00000008},
+	// reserved, no boot
+	[6] = {0, 0, 0},
+	// reserved, also no boot
+	[7] = {0, 0, 0}
+};

board/adi/sc594-som-ezkit/Kconfig

@@ -0,0 +1,133 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# (C) Copyright 2024 - Analog Devices, Inc.
+
+if TARGET_SC594_SOM_EZKIT
+
+config LDR_CPU
+	default "ADSP-SC594-0.0"
+
+config SYS_BOARD
+	default "sc594-som-ezkit"
+
+config SYS_CONFIG_NAME
+	default "sc594-som"
+
+config DEFAULT_DEVICE_TREE
+	default "sc594-som-ezkit"
+
+config ADI_IMAGE
+	default "minimal"
+
+config CUSTOM_SYS_INIT_SP_ADDR
+	default 0xA003f000
+
+# SPL
+
+config SPL_OF_LIBFDT_ASSUME_MASK
+	default 0x0
+
+# SPI Flash
+
+config SF_DEFAULT_BUS
+	default 2
+
+config SF_DEFAULT_CS
+	default 1
+
+config SF_DEFAULT_SPEED
+	default 10000000
+
+# Clocks
+
+config CGU0_DF_DIV
+	default 0
+
+config CGU0_VCO_MULT
+	default 80
+
+config CGU0_CCLK_DIV
+	default 2
+
+config CGU0_SCLK_DIV
+	default 4
+
+config CGU0_SCLK0_DIV
+	default 4
+
+config CGU0_SCLK1_DIV
+	default 2
+
+config CGU0_DCLK_DIV
+	default 2
+
+config CGU0_OCLK_DIV
+	default 16
+
+config CGU0_DIV_S1SELEX
+	default 6
+
+config CGU1_VCO_MULT
+	default 64
+
+config CGU1_DF_DIV
+	default 0
+
+config CGU1_CCLK_DIV
+	default 2
+
+config CGU1_SCLK_DIV
+	default 4
+
+config CGU1_SCLK0_DIV
+	default 4
+
+config CGU1_SCLK1_DIV
+	default 2
+
+config CGU1_DCLK_DIV
+	default 2
+
+config CGU1_OCLK_DIV
+	default 16
+
+config CGU1_DIV_S1SELEX
+	default 6
+
+config CDU0_CLKO0
+	default 1
+
+config CDU0_CLKO1
+	default 1
+
+config CDU0_CLKO2
+	default 1
+
+config CDU0_CLKO3
+	default 3
+
+config CDU0_CLKO4
+	default 3
+
+config CDU0_CLKO5
+	default 1
+
+config CDU0_CLKO6
+	default 1
+
+config CDU0_CLKO7
+	default 1
+
+config CDU0_CLKO8
+	default 3
+
+config CDU0_CLKO9
+	default 1
+
+config CDU0_CLKO10
+	default 1
+
+config CDU0_CLKO12
+	default 1
+
+endif

board/adi/sc594-som-ezkit/sc594-som-ezkit.env

@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later+ */
+
+/*
+ * (C) Copyright 2024 - Analog Devices, Inc.
+ */
+
+#include <env/adi/adi_boot.env>
+
+adi_stage2_offset=0x40000
+adi_image_offset=0x0120000
+adi_rfs_offset=0x1020000
+loadaddr=0xA2000000
+jffs2file=adsp-sc5xx-__stringify(CONFIG_ADI_IMAGE)-adsp-sc594-som-ezkit.jffs2

common/spl/Kconfig

@@ -86,7 +86,7 @@ config SPL_MAX_SIZE
 	default 0x5fa0 if SUNXI_SRAM_ADDRESS = 0x0
 	default 0x10000 if ASPEED_AST2600
 	default 0x27000 if IMX8MM && SPL_TEXT_BASE = 0x7E1000
-	default 0x30000 if ARCH_SC5XX && SC59X_64
+	default 0x30000 if ARCH_SC5XX && (SC59X_64 || SC59X)
 	default 0x0
 	help
 	  Maximum size of the SPL image (text, data, rodata, and linker lists
@@ -123,7 +123,7 @@ config SPL_BSS_START_ADDR
 	default 0x4ff80000 if ARCH_SUNXI && !(MACH_SUN9I || MACH_SUNIV)
 	default 0x2ff80000 if ARCH_SUNXI && MACH_SUN9I
 	default 0x1000 if ARCH_ZYNQMP
-	default 0x200B0000 if ARCH_SC5XX && SC59X_64
+	default 0x200B0000 if ARCH_SC5XX && (SC59X_64 || SC59X)
 
 choice
 	prompt "Enforce SPL BSS limit"
@@ -394,7 +394,7 @@ config SPL_STACK
 	default 0x54000 if MACH_SUN50I || MACH_SUN50I_H5
 	default 0x18000 if MACH_SUN9I
 	default 0x8000 if ARCH_SUNXI
-	default 0x200E4000 if ARCH_SC5XX && SC59X_64
+	default 0x200E4000 if ARCH_SC5XX && (SC59X_64 || SC59X)
 	help
 	  Address of the start of the stack SPL will use before SDRAM is
 	  initialized.
@@ -1130,6 +1130,7 @@ config SPL_PAYLOAD_ARGS_ADDR
 	depends on SPL_OS_BOOT || SPL_LOAD_FIT_OPENSBI_OS_BOOT
 	default 0x88000000 if ARCH_OMAP2PLUS
 	default 0x99000000 if ARCH_SC5XX && SC59X_64
+	default 0xA0000000 if ARCH_SC5XX && TARGET_SC594_SOM_EZKIT
 	help
 	  Address in memory where the 'args' file, typically a device tree
 	  will be loaded in to memory.

include/configs/sc594-som.h

@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * (C) Copyright 2024 - Analog Devices, Inc.
+ */
+
+#ifndef __CONFIG_SC594_SOM_H
+#define __CONFIG_SC594_SOM_H
+
+/*
+ * Memory Settings
+ */
+#define MEM_IS43TR16512BL
+#define MEM_ISSI_8Gb_DDR3_800MHZ
+#define MEM_DMC0
+
+#define CFG_SYS_SDRAM_BASE	0xA0000000
+#define CFG_SYS_SDRAM_SIZE	0x20000000
+
+#endif