From 50a082a88c54975eaa6b6ae39b50936802783387 Mon Sep 17 00:00:00 2001
From: Adrian Alonso <aalonso@freescale.com>
Date: Wed, 2 Sep 2015 13:54:15 -0500
Subject: arm: imx: imx-common: init: move arch init common setup

Move common imx6 arch init setup, init.c can be extended
and reused to support imx7 SoC keeping init arch common
code.

Signed-off-by: Adrian Alonso <aalonso@freescale.com>
---
 arch/arm/imx-common/Makefile |   2 +-
 arch/arm/imx-common/init.c   | 100 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 101 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm/imx-common/init.c

(limited to 'arch/arm/imx-common')

diff --git a/arch/arm/imx-common/Makefile b/arch/arm/imx-common/Makefile
index 3b034e16cd..d77a2363dd 100644
--- a/arch/arm/imx-common/Makefile
+++ b/arch/arm/imx-common/Makefile
@@ -19,7 +19,7 @@ obj-y	+= misc.o
 obj-$(CONFIG_SPL_BUILD)	+= spl.o
 endif
 ifeq ($(SOC),$(filter $(SOC),mx6))
-obj-y 	+= cache.o
+obj-y 	+= cache.o init.o
 obj-$(CONFIG_CMD_SATA) += sata.o
 obj-$(CONFIG_IMX_VIDEO_SKIP) += video.o
 endif
diff --git a/arch/arm/imx-common/init.c b/arch/arm/imx-common/init.c
new file mode 100644
index 0000000000..f7ed038d8e
--- /dev/null
+++ b/arch/arm/imx-common/init.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/imx-common/boot_mode.h>
+#include <asm/arch/crm_regs.h>
+
+void init_aips(void)
+{
+	struct aipstz_regs *aips1, *aips2;
+#ifdef CONFIG_MX6SX
+	struct aipstz_regs *aips3;
+#endif
+
+	aips1 = (struct aipstz_regs *)AIPS1_BASE_ADDR;
+	aips2 = (struct aipstz_regs *)AIPS2_BASE_ADDR;
+#ifdef CONFIG_MX6SX
+	aips3 = (struct aipstz_regs *)AIPS3_BASE_ADDR;
+#endif
+
+	/*
+	 * Set all MPROTx to be non-bufferable, trusted for R/W,
+	 * not forced to user-mode.
+	 */
+	writel(0x77777777, &aips1->mprot0);
+	writel(0x77777777, &aips1->mprot1);
+	writel(0x77777777, &aips2->mprot0);
+	writel(0x77777777, &aips2->mprot1);
+
+	/*
+	 * Set all OPACRx to be non-bufferable, not require
+	 * supervisor privilege level for access,allow for
+	 * write access and untrusted master access.
+	 */
+	writel(0x00000000, &aips1->opacr0);
+	writel(0x00000000, &aips1->opacr1);
+	writel(0x00000000, &aips1->opacr2);
+	writel(0x00000000, &aips1->opacr3);
+	writel(0x00000000, &aips1->opacr4);
+	writel(0x00000000, &aips2->opacr0);
+	writel(0x00000000, &aips2->opacr1);
+	writel(0x00000000, &aips2->opacr2);
+	writel(0x00000000, &aips2->opacr3);
+	writel(0x00000000, &aips2->opacr4);
+
+#ifdef CONFIG_MX6SX
+	/*
+	 * Set all MPROTx to be non-bufferable, trusted for R/W,
+	 * not forced to user-mode.
+	 */
+	writel(0x77777777, &aips3->mprot0);
+	writel(0x77777777, &aips3->mprot1);
+
+	/*
+	 * Set all OPACRx to be non-bufferable, not require
+	 * supervisor privilege level for access,allow for
+	 * write access and untrusted master access.
+	 */
+	writel(0x00000000, &aips3->opacr0);
+	writel(0x00000000, &aips3->opacr1);
+	writel(0x00000000, &aips3->opacr2);
+	writel(0x00000000, &aips3->opacr3);
+	writel(0x00000000, &aips3->opacr4);
+#endif
+}
+
+#define SRC_SCR_WARM_RESET_ENABLE	0
+
+void init_src(void)
+{
+	struct src *src_regs = (struct src *)SRC_BASE_ADDR;
+	u32 val;
+
+	/*
+	 * force warm reset sources to generate cold reset
+	 * for a more reliable restart
+	 */
+	val = readl(&src_regs->scr);
+	val &= ~(1 << SRC_SCR_WARM_RESET_ENABLE);
+	writel(val, &src_regs->scr);
+}
+
+void boot_mode_apply(unsigned cfg_val)
+{
+	unsigned reg;
+	struct src *psrc = (struct src *)SRC_BASE_ADDR;
+	writel(cfg_val, &psrc->gpr9);
+	reg = readl(&psrc->gpr10);
+	if (cfg_val)
+		reg |= 1 << 28;
+	else
+		reg &= ~(1 << 28);
+	writel(reg, &psrc->gpr10);
+}
-- 
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