[U-Boot] [PATCH v6 13/16] arm: socfpga: Add SPL support for Arria 10

[Ley Foon Tan]

Add SPL support for Arria 10.

Signed-off-by: Tien Fong Chee <tien.fong.chee at intel.com>
Signed-off-by: Ley Foon Tan <ley.foon.tan at intel.com>
---
 arch/arm/mach-socfpga/spl.c | 72 +++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 67 insertions(+), 5 deletions(-)

diff --git a/arch/arm/mach-socfpga/spl.c b/arch/arm/mach-socfpga/spl.c
index 0064fc8..f4a3cdd 100644
--- a/arch/arm/mach-socfpga/spl.c
+++ b/arch/arm/mach-socfpga/spl.c
@@ -19,23 +19,32 @@
 #include <asm/arch/sdram.h>
 #include <asm/arch/scu.h>
 #include <asm/arch/nic301.h>
+#include <asm/sections.h>
+#include <fdtdec.h>
+#include <watchdog.h>
+#if defined(CONFIG_TARGET_SOCFPGA_ARRIA10)
+#include <asm/arch/pinmux.h>
+#endif
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
 static struct pl310_regs *const pl310 =
 	(struct pl310_regs *)CONFIG_SYS_PL310_BASE;
 static struct scu_registers *scu_regs =
 	(struct scu_registers *)SOCFPGA_MPUSCU_ADDRESS;
 static struct nic301_registers *nic301_regs =
 	(struct nic301_registers *)SOCFPGA_L3REGS_ADDRESS;
-static struct socfpga_system_manager *sysmgr_regs =
+#endif
+
+static const struct socfpga_system_manager *sysmgr_regs =
 	(struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
 
 u32 spl_boot_device(void)
 {
 	const u32 bsel = readl(&sysmgr_regs->bootinfo);
 
-	switch (bsel & 0x7) {
+	switch (SYSMGR_GET_BOOTINFO_BSEL(bsel)) {
 	case 0x1:	/* FPGA (HPS2FPGA Bridge) */
 		return BOOT_DEVICE_RAM;
 	case 0x2:	/* NAND Flash (1.8V) */
@@ -68,6 +77,7 @@ u32 spl_boot_mode(const u32 boot_device)
 }
 #endif
 
+#if defined(CONFIG_TARGET_SOCFPGA_GEN5)
 static void socfpga_nic301_slave_ns(void)
 {
 	writel(0x1, &nic301_regs->lwhps2fpgaregs);
@@ -85,6 +95,7 @@ void board_init_f(ulong dummy)
 #endif
 	unsigned long sdram_size;
 	unsigned long reg;
+	int ret;
 
 	/*
 	 * First C code to run. Clear fake OCRAM ECC first as SBE
@@ -117,7 +128,11 @@ void board_init_f(ulong dummy)
 	/* Put everything into reset but L4WD0. */
 	socfpga_per_reset_all();
 	/* Put FPGA bridges into reset too. */
-	socfpga_bridges_reset(1);
+	ret = socfpga_bridges_reset(1);
+	if (ret) {
+		printf("socfpga_bridges_reset() failed: %d\n", ret);
+		hang();
+	}
 
 	socfpga_per_reset(SOCFPGA_RESET(SDR), 0);
 	socfpga_per_reset(SOCFPGA_RESET(UART0), 0);
@@ -148,7 +163,11 @@ void board_init_f(ulong dummy)
 
 	/* De-assert reset for peripherals and bridges based on handoff */
 	reset_deassert_peripherals_handoff();
-	socfpga_bridges_reset(0);
+	ret = socfpga_bridges_reset(0);
+	if (ret) {
+		printf("socfpga_bridges_reset() failed: %d\n", ret);
+		hang();
+	}
 
 	debug("Unfreezing/Thaw all I/O banks\n");
 	/* unfreeze / thaw all IO banks */
@@ -178,8 +197,51 @@ void board_init_f(ulong dummy)
 		hang();
 	}
 
-	socfpga_bridges_reset(1);
+	ret = socfpga_bridges_reset(1);
+	if (ret) {
+		printf("socfpga_bridges_reset() failed: %d\n", ret);
+		hang();
+	}
 
 	/* Configure simple malloc base pointer into RAM. */
 	gd->malloc_base = CONFIG_SYS_TEXT_BASE + (1024 * 1024);
 }
+#elif defined(CONFIG_TARGET_SOCFPGA_ARRIA10)
+void spl_board_init(void)
+{
+	/* configuring the clock based on handoff */
+	cm_basic_init(gd->fdt_blob);
+	WATCHDOG_RESET();
+
+	config_dedicated_pins(gd->fdt_blob);
+	WATCHDOG_RESET();
+
+	/* Release UART from reset */
+	socfpga_reset_uart(0);
+
+	/* enable console uart printing */
+	preloader_console_init();
+}
+
+void board_init_f(ulong dummy)
+{
+	/*
+	 * Configure Clock Manager to use intosc clock instead external osc to
+	 * ensure success watchdog operation. We do it as early as possible.
+	 */
+	cm_use_intosc();
+
+	socfpga_watchdog_disable();
+
+	arch_early_init_r();
+
+#ifdef CONFIG_HW_WATCHDOG
+	/* release osc1 watchdog timer 0 from reset */
+	socfpga_reset_deassert_osc1wd0();
+
+	/* reconfigure and enable the watchdog */
+	hw_watchdog_init();
+	WATCHDOG_RESET();
+#endif /* CONFIG_HW_WATCHDOG */
+}
+#endif
-- 
1.8.2.3