arch: arm: Add Analog Devices SC5xx machine type

Add support for the SC5xx machine type from Analog Devices. This
includes support for the SC57x, SC58x, SC59x, and SC59x-64 SoCs, which
have many common features such as common ADI IP blocks, and SHARC DSP
cores. This commit introduces core functionality required for all boards
using an SC5xx SoC, such as:

- SPL configuration
- Required CPU hooks such as reset
- Boot ROM interaction to load the stage 2 bootloader in the reference
  configuration. Other options are possible but not officially supported
  at this time
- SoC-common configuration expected to be reused by all boards
- Early initialization for system clocks and DDR controller

Co-developed-by: Greg Malysa <greg.malysa@timesys.com>
Signed-off-by: Greg Malysa <greg.malysa@timesys.com>
Co-developed-by: Ian Roberts <ian.roberts@timesys.com>
Signed-off-by: Ian Roberts <ian.roberts@timesys.com>
Signed-off-by: Vasileios Bimpikas <vasileios.bimpikas@analog.com>
Signed-off-by: Utsav Agarwal <utsav.agarwal@analog.com>
Signed-off-by: Arturs Artamonovs <arturs.artamonovs@analog.com>
Signed-off-by: Nathan Barrett-Morrison <nathan.morrison@timesys.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/arch/arm/mach-sc5xx/sc58x.c b/arch/arm/mach-sc5xx/sc58x.c
new file mode 100644
index 00000000000..0f892774309
--- /dev/null
+++ b/arch/arm/mach-sc5xx/sc58x.c
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * (C) Copyright 2024 - Analog Devices, Inc.
+ *
+ * Written and/or maintained by Timesys Corporation
+ *
+ * Contact: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
+ * Contact: Greg Malysa <greg.malysa@timesys.com>
+ */
+
+#include <asm/io.h>
+#include <asm/arch-adi/sc5xx/sc5xx.h>
+#include <asm/arch-adi/sc5xx/spl.h>
+
+#define REG_SPU0_SECUREC0 0x3108C980
+#define REG_PADS0_PCFG0 0x31004404
+#define REG_SPU0_SECUREP_START 0x3108CA00
+#define REG_SPU0_SECUREP_END 0x3108CCF0
+
+adi_rom_boot_fn adi_rom_boot = (adi_rom_boot_fn)0x000000e1;
+
+void sc5xx_enable_rgmii(void)
+{
+	writel((readl(REG_PADS0_PCFG0) | 0xc), REG_PADS0_PCFG0);
+}
+
+void sc5xx_soc_init(void)
+{
+	sc5xx_enable_ns_sharc_access(REG_SPU0_SECUREC0);
+	sc5xx_disable_spu0(REG_SPU0_SECUREP_START, REG_SPU0_SECUREP_END);
+	sc5xx_enable_pmu();
+}