Initial import

1 files changed, 379 insertions, 0 deletions

diff --git a/arch/arm/mach-orion5x/common.c b/arch/arm/mach-orion5x/common.c
new file mode 100644
index 000000000..6bbb7b55c
--- /dev/null
+++ b/arch/arm/mach-orion5x/common.c
@@ -0,0 +1,379 @@
+/*
+ * arch/arm/mach-orion5x/common.c
+ *
+ * Core functions for Marvell Orion 5x SoCs
+ *
+ * Maintainer: Tzachi Perelstein <tzachi@marvell.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/serial_8250.h>
+#include <linux/mv643xx_i2c.h>
+#include <linux/ata_platform.h>
+#include <linux/delay.h>
+#include <linux/clk-provider.h>
+#include <linux/cpu.h>
+#include <net/dsa.h>
+#include <asm/page.h>
+#include <asm/setup.h>
+#include <asm/system_misc.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+#include <mach/bridge-regs.h>
+#include <mach/hardware.h>
+#include <mach/orion5x.h>
+#include <linux/platform_data/mtd-orion_nand.h>
+#include <linux/platform_data/usb-ehci-orion.h>
+#include <plat/time.h>
+#include <plat/common.h>
+#include "common.h"
+
+/*****************************************************************************
+ * I/O Address Mapping
+ ****************************************************************************/
+static struct map_desc orion5x_io_desc[] __initdata = {
+	{
+		.virtual	= (unsigned long) ORION5X_REGS_VIRT_BASE,
+		.pfn		= __phys_to_pfn(ORION5X_REGS_PHYS_BASE),
+		.length		= ORION5X_REGS_SIZE,
+		.type		= MT_DEVICE,
+	}, {
+		.virtual	= (unsigned long) ORION5X_PCIE_WA_VIRT_BASE,
+		.pfn		= __phys_to_pfn(ORION5X_PCIE_WA_PHYS_BASE),
+		.length		= ORION5X_PCIE_WA_SIZE,
+		.type		= MT_DEVICE,
+	},
+};
+
+void __init orion5x_map_io(void)
+{
+	iotable_init(orion5x_io_desc, ARRAY_SIZE(orion5x_io_desc));
+}
+
+
+/*****************************************************************************
+ * CLK tree
+ ****************************************************************************/
+static struct clk *tclk;
+
+void __init clk_init(void)
+{
+	tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT,
+				       orion5x_tclk);
+
+	orion_clkdev_init(tclk);
+}
+
+/*****************************************************************************
+ * EHCI0
+ ****************************************************************************/
+void __init orion5x_ehci0_init(void)
+{
+	orion_ehci_init(ORION5X_USB0_PHYS_BASE, IRQ_ORION5X_USB0_CTRL,
+			EHCI_PHY_ORION);
+}
+
+
+/*****************************************************************************
+ * EHCI1
+ ****************************************************************************/
+void __init orion5x_ehci1_init(void)
+{
+	orion_ehci_1_init(ORION5X_USB1_PHYS_BASE, IRQ_ORION5X_USB1_CTRL);
+}
+
+
+/*****************************************************************************
+ * GE00
+ ****************************************************************************/
+void __init orion5x_eth_init(struct mv643xx_eth_platform_data *eth_data)
+{
+	orion_ge00_init(eth_data,
+			ORION5X_ETH_PHYS_BASE, IRQ_ORION5X_ETH_SUM,
+			IRQ_ORION5X_ETH_ERR,
+			MV643XX_TX_CSUM_DEFAULT_LIMIT);
+}
+
+
+/*****************************************************************************
+ * Ethernet switch
+ ****************************************************************************/
+void __init orion5x_eth_switch_init(struct dsa_platform_data *d, int irq)
+{
+	orion_ge00_switch_init(d, irq);
+}
+
+
+/*****************************************************************************
+ * I2C
+ ****************************************************************************/
+void __init orion5x_i2c_init(void)
+{
+	orion_i2c_init(I2C_PHYS_BASE, IRQ_ORION5X_I2C, 8);
+
+}
+
+
+/*****************************************************************************
+ * SATA
+ ****************************************************************************/
+void __init orion5x_sata_init(struct mv_sata_platform_data *sata_data)
+{
+	orion_sata_init(sata_data, ORION5X_SATA_PHYS_BASE, IRQ_ORION5X_SATA);
+}
+
+
+/*****************************************************************************
+ * SPI
+ ****************************************************************************/
+void __init orion5x_spi_init(void)
+{
+	orion_spi_init(SPI_PHYS_BASE);
+}
+
+
+/*****************************************************************************
+ * UART0
+ ****************************************************************************/
+void __init orion5x_uart0_init(void)
+{
+	orion_uart0_init(UART0_VIRT_BASE, UART0_PHYS_BASE,
+			 IRQ_ORION5X_UART0, tclk);
+}
+
+/*****************************************************************************
+ * UART1
+ ****************************************************************************/
+void __init orion5x_uart1_init(void)
+{
+	orion_uart1_init(UART1_VIRT_BASE, UART1_PHYS_BASE,
+			 IRQ_ORION5X_UART1, tclk);
+}
+
+/*****************************************************************************
+ * XOR engine
+ ****************************************************************************/
+void __init orion5x_xor_init(void)
+{
+	orion_xor0_init(ORION5X_XOR_PHYS_BASE,
+			ORION5X_XOR_PHYS_BASE + 0x200,
+			IRQ_ORION5X_XOR0, IRQ_ORION5X_XOR1);
+}
+
+/*****************************************************************************
+ * Cryptographic Engines and Security Accelerator (CESA)
+ ****************************************************************************/
+static void __init orion5x_crypto_init(void)
+{
+	mvebu_mbus_add_window_by_id(ORION_MBUS_SRAM_TARGET,
+				    ORION_MBUS_SRAM_ATTR,
+				    ORION5X_SRAM_PHYS_BASE,
+				    ORION5X_SRAM_SIZE);
+	orion_crypto_init(ORION5X_CRYPTO_PHYS_BASE, ORION5X_SRAM_PHYS_BASE,
+			  SZ_8K, IRQ_ORION5X_CESA);
+}
+
+/*****************************************************************************
+ * Watchdog
+ ****************************************************************************/
+static void __init orion5x_wdt_init(void)
+{
+	orion_wdt_init();
+}
+
+
+/*****************************************************************************
+ * Time handling
+ ****************************************************************************/
+void __init orion5x_init_early(void)
+{
+	u32 rev, dev;
+	const char *mbus_soc_name;
+
+	orion_time_set_base(TIMER_VIRT_BASE);
+
+	/* Initialize the MBUS driver */
+	orion5x_pcie_id(&dev, &rev);
+	if (dev == MV88F5281_DEV_ID)
+		mbus_soc_name = "marvell,orion5x-88f5281-mbus";
+	else if (dev == MV88F5182_DEV_ID)
+		mbus_soc_name = "marvell,orion5x-88f5182-mbus";
+	else if (dev == MV88F5181_DEV_ID)
+		mbus_soc_name = "marvell,orion5x-88f5181-mbus";
+	else if (dev == MV88F6183_DEV_ID)
+		mbus_soc_name = "marvell,orion5x-88f6183-mbus";
+	else
+		mbus_soc_name = NULL;
+	mvebu_mbus_init(mbus_soc_name, ORION5X_BRIDGE_WINS_BASE,
+			ORION5X_BRIDGE_WINS_SZ,
+			ORION5X_DDR_WINS_BASE, ORION5X_DDR_WINS_SZ);
+}
+
+void orion5x_setup_wins(void)
+{
+	/*
+	 * The PCIe windows will no longer be statically allocated
+	 * here once Orion5x is migrated to the pci-mvebu driver.
+	 */
+	mvebu_mbus_add_window_remap_by_id(ORION_MBUS_PCIE_IO_TARGET,
+					  ORION_MBUS_PCIE_IO_ATTR,
+					  ORION5X_PCIE_IO_PHYS_BASE,
+					  ORION5X_PCIE_IO_SIZE,
+					  ORION5X_PCIE_IO_BUS_BASE);
+	mvebu_mbus_add_window_by_id(ORION_MBUS_PCIE_MEM_TARGET,
+				    ORION_MBUS_PCIE_MEM_ATTR,
+				    ORION5X_PCIE_MEM_PHYS_BASE,
+				    ORION5X_PCIE_MEM_SIZE);
+	mvebu_mbus_add_window_remap_by_id(ORION_MBUS_PCI_IO_TARGET,
+					  ORION_MBUS_PCI_IO_ATTR,
+					  ORION5X_PCI_IO_PHYS_BASE,
+					  ORION5X_PCI_IO_SIZE,
+					  ORION5X_PCI_IO_BUS_BASE);
+	mvebu_mbus_add_window_by_id(ORION_MBUS_PCI_MEM_TARGET,
+				    ORION_MBUS_PCI_MEM_ATTR,
+				    ORION5X_PCI_MEM_PHYS_BASE,
+				    ORION5X_PCI_MEM_SIZE);
+}
+
+int orion5x_tclk;
+
+static int __init orion5x_find_tclk(void)
+{
+	u32 dev, rev;
+
+	orion5x_pcie_id(&dev, &rev);
+	if (dev == MV88F6183_DEV_ID &&
+	    (readl(MPP_RESET_SAMPLE) & 0x00000200) == 0)
+		return 133333333;
+
+	return 166666667;
+}
+
+void __init orion5x_timer_init(void)
+{
+	orion5x_tclk = orion5x_find_tclk();
+
+	orion_time_init(ORION5X_BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
+			IRQ_ORION5X_BRIDGE, orion5x_tclk);
+}
+
+
+/*****************************************************************************
+ * General
+ ****************************************************************************/
+/*
+ * Identify device ID and rev from PCIe configuration header space '0'.
+ */
+void __init orion5x_id(u32 *dev, u32 *rev, char **dev_name)
+{
+	orion5x_pcie_id(dev, rev);
+
+	if (*dev == MV88F5281_DEV_ID) {
+		if (*rev == MV88F5281_REV_D2) {
+			*dev_name = "MV88F5281-D2";
+		} else if (*rev == MV88F5281_REV_D1) {
+			*dev_name = "MV88F5281-D1";
+		} else if (*rev == MV88F5281_REV_D0) {
+			*dev_name = "MV88F5281-D0";
+		} else {
+			*dev_name = "MV88F5281-Rev-Unsupported";
+		}
+	} else if (*dev == MV88F5182_DEV_ID) {
+		if (*rev == MV88F5182_REV_A2) {
+			*dev_name = "MV88F5182-A2";
+		} else {
+			*dev_name = "MV88F5182-Rev-Unsupported";
+		}
+	} else if (*dev == MV88F5181_DEV_ID) {
+		if (*rev == MV88F5181_REV_B1) {
+			*dev_name = "MV88F5181-Rev-B1";
+		} else if (*rev == MV88F5181L_REV_A1) {
+			*dev_name = "MV88F5181L-Rev-A1";
+		} else {
+			*dev_name = "MV88F5181(L)-Rev-Unsupported";
+		}
+	} else if (*dev == MV88F6183_DEV_ID) {
+		if (*rev == MV88F6183_REV_B0) {
+			*dev_name = "MV88F6183-Rev-B0";
+		} else {
+			*dev_name = "MV88F6183-Rev-Unsupported";
+		}
+	} else {
+		*dev_name = "Device-Unknown";
+	}
+}
+
+void __init orion5x_init(void)
+{
+	char *dev_name;
+	u32 dev, rev;
+
+	orion5x_id(&dev, &rev, &dev_name);
+	printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, orion5x_tclk);
+
+	/*
+	 * Setup Orion address map
+	 */
+	orion5x_setup_wins();
+
+	/* Setup root of clk tree */
+	clk_init();
+
+	/*
+	 * Don't issue "Wait for Interrupt" instruction if we are
+	 * running on D0 5281 silicon.
+	 */
+	if (dev == MV88F5281_DEV_ID && rev == MV88F5281_REV_D0) {
+		printk(KERN_INFO "Orion: Applying 5281 D0 WFI workaround.\n");
+		cpu_idle_poll_ctrl(true);
+	}
+
+	/*
+	 * The 5082/5181l/5182/6082/6082l/6183 have crypto
+	 * while 5180n/5181/5281 don't have crypto.
+	 */
+	if ((dev == MV88F5181_DEV_ID && rev >= MV88F5181L_REV_A0) ||
+	    dev == MV88F5182_DEV_ID || dev == MV88F6183_DEV_ID)
+		orion5x_crypto_init();
+
+	/*
+	 * Register watchdog driver
+	 */
+	orion5x_wdt_init();
+}
+
+void orion5x_restart(enum reboot_mode mode, const char *cmd)
+{
+	/*
+	 * Enable and issue soft reset
+	 */
+	orion5x_setbits(RSTOUTn_MASK, (1 << 2));
+	orion5x_setbits(CPU_SOFT_RESET, 1);
+	mdelay(200);
+	orion5x_clrbits(CPU_SOFT_RESET, 1);
+}
+
+/*
+ * Many orion-based systems have buggy bootloader implementations.
+ * This is a common fixup for bogus memory tags.
+ */
+void __init tag_fixup_mem32(struct tag *t, char **from)
+{
+	for (; t->hdr.size; t = tag_next(t))
+		if (t->hdr.tag == ATAG_MEM &&
+		    (!t->u.mem.size || t->u.mem.size & ~PAGE_MASK ||
+		     t->u.mem.start & ~PAGE_MASK)) {
+			printk(KERN_WARNING
+			       "Clearing invalid memory bank %dKB@0x%08x\n",
+			       t->u.mem.size / 1024, t->u.mem.start);
+			t->hdr.tag = 0;
+		}
+}