1 files changed, 111 insertions, 0 deletions
diff --git a/arch/arm/mach-versal/mp.c b/arch/arm/mach-versal/mp.c
new file mode 100644
index 0000000..4b434b0
--- /dev/null
+++ b/arch/arm/mach-versal/mp.c
@@ -0,0 +1,111 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) Copyright 2019 Xilinx, Inc.
+ * Siva Durga Prasad <siva.durga.paladugu@xilinx.com>
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/sys_proto.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define HALT		0
+#define RELEASE		1
+
+#define VERSAL_RPU_CFG_CPU_HALT_MASK		0x01
+#define VERSAL_RPU_GLBL_CTRL_SPLIT_LOCK_MASK	0x08
+#define VERSAL_RPU_GLBL_CTRL_TCM_COMB_MASK	0x40
+#define VERSAL_RPU_GLBL_CTRL_SLCLAMP_MASK	0x10
+
+#define VERSAL_CRLAPB_RST_LPD_AMBA_RST_MASK	0x04
+#define VERSAL_CRLAPB_RST_LPD_R50_RST_MASK	0x01
+#define VERSAL_CRLAPB_RST_LPD_R51_RST_MASK	0x02
+#define VERSAL_CRL_RST_CPU_R5_RESET_PGE_MASK	0x10
+#define VERSAL_CRLAPB_CPU_R5_CTRL_CLKACT_MASK	0x1000000
+
+void set_r5_halt_mode(u8 halt, u8 mode)
+{
+	u32 tmp;
+
+	tmp = readl(&rpu_base->rpu0_cfg);
+	if (halt == HALT)
+		tmp &= ~VERSAL_RPU_CFG_CPU_HALT_MASK;
+	else
+		tmp |= VERSAL_RPU_CFG_CPU_HALT_MASK;
+	writel(tmp, &rpu_base->rpu0_cfg);
+
+	if (mode == TCM_LOCK) {
+		tmp = readl(&rpu_base->rpu1_cfg);
+		if (halt == HALT)
+			tmp &= ~VERSAL_RPU_CFG_CPU_HALT_MASK;
+		else
+			tmp |= VERSAL_RPU_CFG_CPU_HALT_MASK;
+		writel(tmp, &rpu_base->rpu1_cfg);
+	}
+}
+
+void set_r5_tcm_mode(u8 mode)
+{
+	u32 tmp;
+
+	tmp = readl(&rpu_base->rpu_glbl_ctrl);
+	if (mode == TCM_LOCK) {
+		tmp &= ~VERSAL_RPU_GLBL_CTRL_SPLIT_LOCK_MASK;
+		tmp |= VERSAL_RPU_GLBL_CTRL_TCM_COMB_MASK |
+		       VERSAL_RPU_GLBL_CTRL_SLCLAMP_MASK;
+	} else {
+		tmp |= VERSAL_RPU_GLBL_CTRL_SPLIT_LOCK_MASK;
+		tmp &= ~(VERSAL_RPU_GLBL_CTRL_TCM_COMB_MASK |
+		       VERSAL_RPU_GLBL_CTRL_SLCLAMP_MASK);
+	}
+
+	writel(tmp, &rpu_base->rpu_glbl_ctrl);
+}
+
+void release_r5_reset(u8 mode)
+{
+	u32 tmp;
+
+	tmp = readl(&crlapb_base->rst_cpu_r5);
+	tmp &= ~(VERSAL_CRLAPB_RST_LPD_AMBA_RST_MASK |
+	       VERSAL_CRLAPB_RST_LPD_R50_RST_MASK |
+	       VERSAL_CRL_RST_CPU_R5_RESET_PGE_MASK);
+
+	if (mode == TCM_LOCK)
+		tmp &= ~VERSAL_CRLAPB_RST_LPD_R51_RST_MASK;
+
+	writel(tmp, &crlapb_base->rst_cpu_r5);
+}
+
+void enable_clock_r5(void)
+{
+	u32 tmp;
+
+	tmp = readl(&crlapb_base->cpu_r5_ctrl);
+	tmp |= VERSAL_CRLAPB_CPU_R5_CTRL_CLKACT_MASK;
+	writel(tmp, &crlapb_base->cpu_r5_ctrl);
+}
+
+void initialize_tcm(bool mode)
+{
+	if (!mode) {
+		set_r5_tcm_mode(TCM_LOCK);
+		set_r5_halt_mode(HALT, TCM_LOCK);
+		enable_clock_r5();
+		release_r5_reset(TCM_LOCK);
+	} else {
+		set_r5_tcm_mode(TCM_SPLIT);
+		set_r5_halt_mode(HALT, TCM_SPLIT);
+		enable_clock_r5();
+		release_r5_reset(TCM_SPLIT);
+	}
+}
+
+void tcm_init(u8 mode)
+{
+	puts("WARNING: Initializing TCM overwrites TCM content\n");
+	initialize_tcm(mode);
+	memset((void *)VERSAL_TCM_BASE_ADDR, 0, VERSAL_TCM_SIZE);
+}