1 files changed, 270 insertions, 0 deletions
diff --git a/arch/arm/cpu/arm926ejs/orion5x/cpu.c b/arch/arm/cpu/arm926ejs/orion5x/cpu.c
new file mode 100644
index 0000000000..c2f5253b05
--- /dev/null
+++ b/arch/arm/cpu/arm926ejs/orion5x/cpu.c
@@ -0,0 +1,270 @@
+/*
+ * Copyright (C) 2010 Albert ARIBAUD <albert.aribaud@free.fr>
+ *
+ * Based on original Kirkwood support which is
+ * (C) Copyright 2009
+ * Marvell Semiconductor <www.marvell.com>
+ * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <common.h>
+#include <netdev.h>
+#include <asm/cache.h>
+#include <u-boot/md5.h>
+#include <asm/arch/orion5x.h>
+#include <hush.h>
+
+#define BUFLEN	16
+
+void reset_cpu(unsigned long ignored)
+{
+	struct orion5x_cpu_registers *cpureg =
+	    (struct orion5x_cpu_registers *)ORION5X_CPU_REG_BASE;
+
+	writel(readl(&cpureg->rstoutn_mask) | (1 << 2),
+		&cpureg->rstoutn_mask);
+	writel(readl(&cpureg->sys_soft_rst) | 1,
+		&cpureg->sys_soft_rst);
+	while (1)
+		;
+}
+
+/*
+ * Window Size
+ * Used with the Base register to set the address window size and location.
+ * Must be programmed from LSB to MSB as sequence of ones followed by
+ * sequence of zeros. The number of ones specifies the size of the window in
+ * 64 KByte granularity (e.g., a value of 0x00FF specifies 256 = 16 MByte).
+ * NOTE: A value of 0x0 specifies 64-KByte size.
+ */
+unsigned int orion5x_winctrl_calcsize(unsigned int sizeval)
+{
+	int i;
+	unsigned int j = 0;
+	u32 val = sizeval >> 1;
+
+	for (i = 0; val > 0x10000; i++) {
+		j |= (1 << i);
+		val = val >> 1;
+	}
+	return 0x0000ffff & j;
+}
+
+/*
+ * orion5x_config_adr_windows - Configure address Windows
+ *
+ * There are 8 address windows supported by Orion5x Soc to addess different
+ * devices. Each window can be configured for size, BAR and remap addr
+ * Below configuration is standard for most of the cases
+ *
+ * If remap function not used, remap_lo must be set as base
+ *
+ * Reference Documentation:
+ * Mbus-L to Mbus Bridge Registers Configuration.
+ * (Sec 25.1 and 25.3 of Datasheet)
+ */
+int orion5x_config_adr_windows(void)
+{
+	struct orion5x_win_registers *winregs =
+		(struct orion5x_win_registers *)ORION5X_CPU_WIN_BASE;
+
+	/* Window 0: PCIE MEM address space */
+	writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_DEFSZ_PCIE_MEM,
+		ORION5X_TARGET_PCIE, ORION5X_ATTR_PCIE_MEM,
+		ORION5X_WIN_ENABLE), &winregs[0].ctrl);
+	writel(ORION5X_DEFADR_PCIE_MEM, &winregs[0].base);
+	writel(ORION5X_DEFADR_PCIE_MEM_REMAP_LO, &winregs[0].remap_lo);
+	writel(ORION5X_DEFADR_PCIE_MEM_REMAP_HI, &winregs[0].remap_hi);
+
+	/* Window 1: PCIE IO address space */
+	writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_DEFSZ_PCIE_IO,
+		ORION5X_TARGET_PCIE, ORION5X_ATTR_PCIE_IO,
+		ORION5X_WIN_ENABLE), &winregs[1].ctrl);
+	writel(ORION5X_DEFADR_PCIE_IO, &winregs[1].base);
+	writel(ORION5X_DEFADR_PCIE_IO_REMAP_LO, &winregs[1].remap_lo);
+	writel(ORION5X_DEFADR_PCIE_IO_REMAP_HI, &winregs[1].remap_hi);
+
+	/* Window 2: PCI MEM address space */
+	writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_DEFSZ_PCI_MEM,
+		ORION5X_TARGET_PCI, ORION5X_ATTR_PCI_MEM,
+		ORION5X_WIN_ENABLE), &winregs[2].ctrl);
+	writel(ORION5X_DEFADR_PCI_MEM, &winregs[2].base);
+
+	/* Window 3: PCI IO address space */
+	writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_DEFSZ_PCI_IO,
+		ORION5X_TARGET_PCI, ORION5X_ATTR_PCI_IO,
+		ORION5X_WIN_ENABLE), &winregs[3].ctrl);
+	writel(ORION5X_DEFADR_PCI_IO, &winregs[3].base);
+
+	/* Window 4: DEV_CS0 address space */
+	writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_DEFSZ_DEV_CS0,
+		ORION5X_TARGET_DEVICE, ORION5X_ATTR_DEV_CS0,
+		ORION5X_WIN_ENABLE), &winregs[4].ctrl);
+	writel(ORION5X_DEFADR_DEV_CS0, &winregs[4].base);
+
+	/* Window 5: DEV_CS1 address space */
+	writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_DEFSZ_DEV_CS1,
+		ORION5X_TARGET_DEVICE, ORION5X_ATTR_DEV_CS1,
+		ORION5X_WIN_ENABLE), &winregs[5].ctrl);
+	writel(ORION5X_DEFADR_DEV_CS1, &winregs[5].base);
+
+	/* Window 6: DEV_CS2 address space */
+	writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_DEFSZ_DEV_CS2,
+		ORION5X_TARGET_DEVICE, ORION5X_ATTR_DEV_CS2,
+		ORION5X_WIN_ENABLE), &winregs[6].ctrl);
+	writel(ORION5X_DEFADR_DEV_CS2, &winregs[6].base);
+
+	/* Window 7: BOOT Memory address space */
+	writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_DEFSZ_BOOTROM,
+		ORION5X_TARGET_DEVICE, ORION5X_ATTR_BOOTROM,
+		ORION5X_WIN_ENABLE), &winregs[7].ctrl);
+	writel(ORION5X_DEFADR_BOOTROM, &winregs[7].base);
+
+	return 0;
+}
+
+/*
+ * Orion5x identification is done through PCIE space.
+ */
+
+u32 orion5x_device_id(void)
+{
+	return readl(PCIE_DEV_ID_OFF) >> 16;
+}
+
+u32 orion5x_device_rev(void)
+{
+	return readl(PCIE_DEV_REV_OFF) & 0xff;
+}
+
+#if defined(CONFIG_DISPLAY_CPUINFO)
+
+/* Display device and revision IDs.
+ * This function must cover all known device/revision
+ * combinations, not only the one for which u-boot is
+ * compiled; this way, one can identify actual HW in
+ * case of a mismatch.
+ */
+int print_cpuinfo(void)
+{
+	char dev_str[] = "0x0000";
+	char rev_str[] = "0x00";
+	char *dev_name = NULL;
+	char *rev_name = NULL;
+
+	u32 dev = orion5x_device_id();
+	u32 rev = orion5x_device_rev();
+
+	if (dev == MV88F5181_DEV_ID) {
+		dev_name = "MV88F5181";
+		if (rev == MV88F5181_REV_B1)
+			rev_name = "B1";
+		else if (rev == MV88F5181L_REV_A1) {
+			dev_name = "MV88F5181L";
+			rev_name = "A1";
+		} else if (rev == MV88F5181L_REV_A0) {
+			dev_name = "MV88F5181L";
+			rev_name = "A0";
+		}
+	} else if (dev == MV88F5182_DEV_ID) {
+		dev_name = "MV88F5182";
+		if (rev == MV88F5182_REV_A2)
+			rev_name = "A2";
+	} else if (dev == MV88F5281_DEV_ID) {
+		dev_name = "MV88F5281";
+		if (rev == MV88F5281_REV_D2)
+			rev_name = "D2";
+		else if (rev == MV88F5281_REV_D1)
+			rev_name = "D1";
+		else if (rev == MV88F5281_REV_D0)
+			rev_name = "D0";
+	} else if (dev == MV88F6183_DEV_ID) {
+		dev_name = "MV88F6183";
+		if (rev == MV88F6183_REV_B0)
+			rev_name = "B0";
+	}
+	if (dev_name == NULL) {
+		sprintf(dev_str, "0x%04x", dev);
+		dev_name = dev_str;
+	}
+	if (rev_name == NULL) {
+		sprintf(rev_str, "0x%02x", rev);
+		rev_name = rev_str;
+	}
+
+	printf("SoC:   Orion5x %s-%s\n", dev_name, rev_name);
+
+	return 0;
+}
+#endif /* CONFIG_DISPLAY_CPUINFO */
+
+#ifdef CONFIG_ARCH_CPU_INIT
+int arch_cpu_init(void)
+{
+	/* Enable and invalidate L2 cache in write through mode */
+	invalidate_l2_cache();
+
+	orion5x_config_adr_windows();
+
+	return 0;
+}
+#endif /* CONFIG_ARCH_CPU_INIT */
+
+/*
+ * SOC specific misc init
+ */
+#if defined(CONFIG_ARCH_MISC_INIT)
+int arch_misc_init(void)
+{
+	u32 temp;
+
+	/*CPU streaming & write allocate */
+	temp = readfr_extra_feature_reg();
+	temp &= ~(1 << 28);	/* disable wr alloc */
+	writefr_extra_feature_reg(temp);
+
+	temp = readfr_extra_feature_reg();
+	temp &= ~(1 << 29);	/* streaming disabled */
+	writefr_extra_feature_reg(temp);
+
+	/* L2Cache settings */
+	temp = readfr_extra_feature_reg();
+	/* Disable L2C pre fetch - Set bit 24 */
+	temp |= (1 << 24);
+	/* enable L2C - Set bit 22 */
+	temp |= (1 << 22);
+	writefr_extra_feature_reg(temp);
+
+	icache_enable();
+	/* Change reset vector to address 0x0 */
+	temp = get_cr();
+	set_cr(temp & ~CR_V);
+
+	/* Set CPIOs and MPPs - values provided by board
+	   include file */
+	writel(ORION5X_MPP_BASE+0x00, ORION5X_MPP0_7);
+	writel(ORION5X_MPP_BASE+0x04, ORION5X_MPP8_15);
+	writel(ORION5X_MPP_BASE+0x50, ORION5X_MPP16_23);
+	writel(ORION5X_GPIO_BASE+0x04, ORION5X_GPIO_OUT_ENABLE);
+
+	return 0;
+}
+#endif /* CONFIG_ARCH_MISC_INIT */