arm: SC598-SOM-EZKIT initial support

Adds support for Analog Devices' SC598-SOM-EZKIT board. Includes:
- CONFIG options common to all SC5xx SoCs
- SoC specific configs in mach-sc5xx/Kconfig
- SPL config options in common/spl/Kconfig
- Memory Map for SPL
- 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: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
Signed-off-by: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
Co-developed-by: Trevor Woerner <twoerner@gmail.com>
Signed-off-by: Trevor Woerner <twoerner@gmail.com>
Signed-off-by: Oliver Gaskell <Oliver.Gaskell@analog.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7296012..348f48b 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1871,9 +1871,15 @@
 	select ADI_SC5XX_TIMER
 	select DM
 	select DM_SERIAL
+	select HAS_CUSTOM_SYS_INIT_SP_ADDR
 	select PANIC_HANG
 	select SPL
+	select SPL_BOOTROM_SUPPORT
 	select SPL_DM
+	select SPL_DM_SEQ_ALIAS
+	select SPL_LIBGENERIC_SUPPORT
+	select SPL_LIBCOMMON_SUPPORT
+	select SPL_SKIP_LOWLEVEL_INIT
 	select SUPPORT_SPL
 	select TIMER
 
diff --git a/arch/arm/mach-sc5xx/Kconfig b/arch/arm/mach-sc5xx/Kconfig
index 2ec09db..4e587eb 100644
--- a/arch/arm/mach-sc5xx/Kconfig
+++ b/arch/arm/mach-sc5xx/Kconfig
@@ -13,6 +13,9 @@
 
 if ARCH_SC5XX
 
+config SYS_VENDOR
+	default "adi"
+
 choice
 	prompt "SC5xx SoC Select"
 	help
@@ -39,12 +42,33 @@
 	select ARM64
 	select COMMON_CLK_ADI_SC598
 	select GICV3
+	select GICV3_SUPPORT_GIC600
 	select GIC_600_CLEAR_RDPD
 	select MMC_SDHCI_ADMA_FORCE_32BIT
-	select NOP_PHY
+	select NOP_PHY if PHY
+
+endchoice
+
+if SC59X_64
+
+choice
+	prompt "SC59x 64-bit board select"
+
+config TARGET_SC598_SOM_EZKIT
+	bool
+	prompt "SC598-SOM with SOMCRR-EZKIT"
+	select ADI_CARRIER_SOMCRR_EZKIT
 
 endchoice
 
+endif
+
+config ADI_IMAGE
+	string "ADI fitImage type"
+	help
+	  The image built by the ADI ADSP Linux build system.
+	  Is one of tiny, minimal, full.
+
 config SC_BOOT_MODE
 	int "SC5XX boot mode select"
 	default 1
@@ -84,10 +108,25 @@
 	  This is the OSPI chip select number to use for booting, Y in the
 	  expression `sf probe X:Y`
 
+config SYS_BOOTM_LEN
+	hex
+	default 0x1800000
+
 config SYS_FLASH_BASE
 	hex
 	default 0x60000000
 
+config SYS_MALLOC_F_LEN
+	default 0x14000
+
+config SYS_LOAD_ADDR
+	hex
+	default 0x0
+
+config SYS_MALLOC_LEN
+	hex
+	default 1048576
+
 config UART_CONSOLE
 	int
 	default 0
@@ -463,4 +502,6 @@
 	bool
 	default y
 
+source "board/adi/sc598-som-ezkit/Kconfig"
+
 endif
diff --git a/arch/arm/mach-sc5xx/Makefile b/arch/arm/mach-sc5xx/Makefile
index eeb56c0..0955c50 100644
--- a/arch/arm/mach-sc5xx/Makefile
+++ b/arch/arm/mach-sc5xx/Makefile
@@ -14,6 +14,7 @@
 obj-$(CONFIG_SC58X) += sc58x.o
 obj-$(CONFIG_SC59X) += sc59x.o
 obj-$(CONFIG_SC59X_64) += sc59x_64.o
+obj-$(CONFIG_SC59X_64) += sc59x_64-spl.o
 
 obj-$(CONFIG_SPL_BUILD) += spl.o
 obj-$(CONFIG_SYSCON) += rcu.o
diff --git a/arch/arm/mach-sc5xx/sc59x_64-spl.c b/arch/arm/mach-sc5xx/sc59x_64-spl.c
new file mode 100644
index 0000000..3992538
--- /dev/null
+++ b/arch/arm/mach-sc5xx/sc59x_64-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 47-14 in SC598 hardware reference manual
+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},
+	// eMMC
+	[6] = {0x201, 0, 0x86009},
+	// reserved, also no boot
+	[7] = {0, 0, 0}
+};
diff --git a/arch/arm/mach-sc5xx/sc59x_64.c b/arch/arm/mach-sc5xx/sc59x_64.c
index 82537bf..001747f 100644
--- a/arch/arm/mach-sc5xx/sc59x_64.c
+++ b/arch/arm/mach-sc5xx/sc59x_64.c
@@ -9,6 +9,7 @@
  */
 
 #include <asm/io.h>
+#include <asm/armv8/mmu.h>
 #include <asm/arch-adi/sc5xx/sc5xx.h>
 #include <asm/arch-adi/sc5xx/spl.h>
 
@@ -24,6 +25,30 @@
 #define BITM_SCB5_SPI2_OSPI_REMAP_REMAP 0x00000003
 #define ENUM_SCB5_SPI2_OSPI_REMAP_OSPI0 0x00000001
 
+static struct mm_region sc598_mem_map[] = {
+	{
+		/* Peripherals */
+		.virt = 0x0UL,
+		.phys = 0x0UL,
+		.size = 0x80000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE |
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
+		/* DDR */
+		.virt = 0x80000000UL,
+		.phys = 0x80000000UL,
+		.size = 0x40000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+			 PTE_BLOCK_INNER_SHARE
+	}, {
+		/* List terminator */
+		0,
+	}
+};
+
+struct mm_region *mem_map = sc598_mem_map;
+
 adi_rom_boot_fn adi_rom_boot = (adi_rom_boot_fn)0x000000e4;
 
 void sc5xx_enable_rgmii(void)
diff --git a/arch/arm/mach-sc5xx/soc.c b/arch/arm/mach-sc5xx/soc.c
index 8f13127..f361920 100644
--- a/arch/arm/mach-sc5xx/soc.c
+++ b/arch/arm/mach-sc5xx/soc.c
@@ -172,6 +172,42 @@
 		phy_write(phydev, MDIO_DEVAD_NONE, 0, 0x3100);
 }
 
+extern char __bss_start, __bss_end;
+extern char __rel_dyn_end;
+
+void bss_clear(void)
+{
+	char *bss_start = &__bss_start;
+	char *bss_end = &__bss_end;
+	char *rel_dyn_end = &__rel_dyn_end;
+
+	char *start;
+
+	if (rel_dyn_end >= bss_start && rel_dyn_end <= bss_end)
+		start = rel_dyn_end;
+	else
+		start = bss_start;
+
+	u32 *pt;
+	size_t sz = bss_end - start;
+
+	for (int i = 0; i < sz; i += 4) {
+		pt = (u32 *)(start + i);
+		*pt = 0;
+	}
+}
+
+int board_early_init_f(void)
+{
+	bss_clear();
+	return 0;
+}
+
+int board_init(void)
+{
+	return 0;
+}
+
 int dram_init(void)
 {
 	gd->ram_size = CFG_SYS_SDRAM_SIZE;