imx: reorganize IMX code as other SOCs

Change is consistent with other SOCs and it is in preparation
for adding SOMs. SOC's related files are moved from cpu/ to
mach-imx/<SOC>.

This change is also coherent with the structure in kernel.

Signed-off-by: Stefano Babic <sbabic@denx.de>

CC: Fabio Estevam <fabio.estevam@nxp.com>
CC: Akshay Bhat <akshaybhat@timesys.com>
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CC: Hans de Goede <hdegoede@redhat.com>
CC: Masahiro Yamada <yamada.masahiro@socionext.com>
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CC: Andre Przywara <andre.przywara@arm.com>
CC: "Álvaro Fernández Rojas" <noltari@gmail.com>
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CC: Eric Nelson <eric@nelint.com>
CC: Bai Ping <ping.bai@nxp.com>
CC: Anson Huang <Anson.Huang@nxp.com>
CC: Sanchayan Maity <maitysanchayan@gmail.com>
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Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>

1 files changed, 127 insertions, 0 deletions

diff --git a/arch/arm/mach-imx/init.c b/arch/arm/mach-imx/init.c
new file mode 100644
index 0000000000..720ad672a6
--- /dev/null
+++ b/arch/arm/mach-imx/init.c
@@ -0,0 +1,127 @@
+/*
+ * 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/mach-imx/boot_mode.h>
+#include <asm/arch/crm_regs.h>
+
+void init_aips(void)
+{
+	struct aipstz_regs *aips1, *aips2, *aips3;
+
+	aips1 = (struct aipstz_regs *)AIPS1_BASE_ADDR;
+	aips2 = (struct aipstz_regs *)AIPS2_BASE_ADDR;
+	aips3 = (struct aipstz_regs *)AIPS3_BASE_ADDR;
+
+	/*
+	 * 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);
+
+	if (is_mx6ull() || is_mx6sx() || is_mx7()) {
+		/*
+		 * 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);
+	}
+}
+
+void imx_set_wdog_powerdown(bool enable)
+{
+	struct wdog_regs *wdog1 = (struct wdog_regs *)WDOG1_BASE_ADDR;
+	struct wdog_regs *wdog2 = (struct wdog_regs *)WDOG2_BASE_ADDR;
+	struct wdog_regs *wdog3 = (struct wdog_regs *)WDOG3_BASE_ADDR;
+#ifdef CONFIG_MX7D
+	struct wdog_regs *wdog4 = (struct wdog_regs *)WDOG4_BASE_ADDR;
+#endif
+
+	/* Write to the PDE (Power Down Enable) bit */
+	writew(enable, &wdog1->wmcr);
+	writew(enable, &wdog2->wmcr);
+
+	if (is_mx6sx() || is_mx6ul() || is_mx7())
+		writew(enable, &wdog3->wmcr);
+#ifdef CONFIG_MX7D
+	writew(enable, &wdog4->wmcr);
+#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);
+}
+
+#ifdef CONFIG_CMD_BMODE
+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);
+}
+#endif
+
+#if defined(CONFIG_MX6)
+u32 imx6_src_get_boot_mode(void)
+{
+	if (imx6_is_bmode_from_gpr9())
+		return readl(&src_base->gpr9);
+	else
+		return readl(&src_base->sbmr1);
+}
+#endif