[U-Boot] [PATCH v4 15/17] arm: socfpga: agilex: Add SPL for Agilex SoC

[Ley Foon Tan]

Add SPL support for Agilex SoC.

Signed-off-by: Ley Foon Tan <ley.foon.tan at intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com>

---
v4:
- Move spl_early_init() to entry of board_init_f
- Add socfpga_get_manager_addr().
- Remove SYSMGR_DMA and SYSMGR_DMA_PERIPH, already set in firewall_setup().

v2:
- Change clock driver probing to DM.
- Remove unused OSC1TIMER0 reset
- Remove debug_uart_init(). UART depends on clock driver setup, no point to call
  debug_uart_init() after spl_early_init() and clock driver initialization.
---
 arch/arm/mach-socfpga/Makefile     |  1 +
 arch/arm/mach-socfpga/spl_agilex.c | 95 ++++++++++++++++++++++++++++++
 2 files changed, 96 insertions(+)
 create mode 100644 arch/arm/mach-socfpga/spl_agilex.c

diff --git a/arch/arm/mach-socfpga/Makefile b/arch/arm/mach-socfpga/Makefile
index 6f39dc06ed..9d334e9e1b 100644
--- a/arch/arm/mach-socfpga/Makefile
+++ b/arch/arm/mach-socfpga/Makefile
@@ -60,6 +60,7 @@ obj-y	+= spl_s10.o
 endif
 ifdef CONFIG_TARGET_SOCFPGA_AGILEX
 obj-y	+= ccu_agilex.o
+obj-y	+= spl_agilex.o
 endif
 endif
 
diff --git a/arch/arm/mach-socfpga/spl_agilex.c b/arch/arm/mach-socfpga/spl_agilex.c
new file mode 100644
index 0000000000..c05954664d
--- /dev/null
+++ b/arch/arm/mach-socfpga/spl_agilex.c
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Intel Corporation <www.intel.com>
+ *
+ */
+
+#include <asm/io.h>
+#include <asm/u-boot.h>
+#include <asm/utils.h>
+#include <common.h>
+#include <image.h>
+#include <spl.h>
+#include <asm/arch/ccu_agilex.h>
+#include <asm/arch/clock_manager.h>
+#include <asm/arch/firewall.h>
+#include <asm/arch/mailbox_s10.h>
+#include <asm/arch/misc.h>
+#include <asm/arch/reset_manager.h>
+#include <asm/arch/system_manager.h>
+#include <watchdog.h>
+#include <dm/uclass.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+u32 spl_boot_device(void)
+{
+	return BOOT_DEVICE_MMC1;
+}
+
+#ifdef CONFIG_SPL_MMC_SUPPORT
+u32 spl_boot_mode(const u32 boot_device)
+{
+#if defined(CONFIG_SPL_FS_FAT) || defined(CONFIG_SPL_FS_EXT4)
+	return MMCSD_MODE_FS;
+#else
+	return MMCSD_MODE_RAW;
+#endif
+}
+#endif
+
+void board_init_f(ulong dummy)
+{
+	int ret;
+	struct udevice *dev;
+
+	ret = spl_early_init();
+	if (ret)
+		hang();
+
+	socfpga_get_manager_addr();
+
+#ifdef CONFIG_HW_WATCHDOG
+	/* Ensure watchdog is paused when debugging is happening */
+	writel(SYSMGR_WDDBG_PAUSE_ALL_CPU,
+	       socfpga_sysmgr_base + SYSMGR_SOC64_WDDBG);
+
+	/* Enable watchdog before initializing the HW */
+	socfpga_per_reset(SOCFPGA_RESET(L4WD0), 1);
+	socfpga_per_reset(SOCFPGA_RESET(L4WD0), 0);
+	hw_watchdog_init();
+#endif
+
+	/* ensure all processors are not released prior Linux boot */
+	writeq(0, CPU_RELEASE_ADDR);
+
+	timer_init();
+
+	sysmgr_pinmux_init();
+
+	ret = uclass_get_device(UCLASS_CLK, 0, &dev);
+	if (ret) {
+		debug("Clock init failed: %d\n", ret);
+		hang();
+	}
+
+	preloader_console_init();
+	cm_print_clock_quick_summary();
+
+	firewall_setup();
+	ccu_init();
+
+#if CONFIG_IS_ENABLED(ALTERA_SDRAM)
+	ret = uclass_get_device(UCLASS_RAM, 0, &dev);
+	if (ret) {
+		debug("DRAM init failed: %d\n", ret);
+		hang();
+	}
+#endif
+
+	mbox_init();
+
+#ifdef CONFIG_CADENCE_QSPI
+	mbox_qspi_open();
+#endif
+}
-- 
2.19.0