[ARM] add Marvell Loki (88RC8480) SoC support

The Marvell Loki (88RC8480) is an ARM SoC based on a Feroceon CPU
core running at between 400 MHz and 1.0 GHz, and features a 64 bit
DDR controller, 512K of internal SRAM, two x4 PCI-Express ports,
two Gigabit Ethernet ports, two 4x SAS/SATA controllers, two UARTs,
two TWSI controllers, and IDMA/XOR engines.

This patch adds support for the Marvell LB88RC8480 Development
Board, enabling the use of the PCIe interfaces, the ethernet
interfaces, the TWSI interfaces and the UARTs.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>

8 files changed, 602 insertions, 0 deletions

diff --git a/arch/arm/mach-loki/Kconfig b/arch/arm/mach-loki/Kconfig
new file mode 100644
index 000000000000..0045bdd761ca
--- /dev/null
+++ b/arch/arm/mach-loki/Kconfig
@@ -0,0 +1,13 @@
+if ARCH_LOKI
+
+menu "Marvell Loki (88RC8480) Implementations"
+
+config MACH_LB88RC8480
+	bool "Marvell LB88RC8480 Development Board"
+	help
+	  Say 'Y' here if you want your kernel to support the
+	  Marvell LB88RC8480 Development Board.
+
+endmenu
+
+endif
diff --git a/arch/arm/mach-loki/Makefile b/arch/arm/mach-loki/Makefile
new file mode 100644
index 000000000000..d43233ee590f
--- /dev/null
+++ b/arch/arm/mach-loki/Makefile
@@ -0,0 +1,3 @@
+obj-y				+= common.o addr-map.o irq.o
+
+obj-$(CONFIG_MACH_LB88RC8480)	+= lb88rc8480-setup.o
diff --git a/arch/arm/mach-loki/Makefile.boot b/arch/arm/mach-loki/Makefile.boot
new file mode 100644
index 000000000000..67039c3e0c48
--- /dev/null
+++ b/arch/arm/mach-loki/Makefile.boot
@@ -0,0 +1,3 @@
+   zreladdr-y	:= 0x00008000
+params_phys-y	:= 0x00000100
+initrd_phys-y	:= 0x00800000
diff --git a/arch/arm/mach-loki/addr-map.c b/arch/arm/mach-loki/addr-map.c
new file mode 100644
index 000000000000..ba25e56ade58
--- /dev/null
+++ b/arch/arm/mach-loki/addr-map.c
@@ -0,0 +1,121 @@
+/*
+ * arch/arm/mach-loki/addr-map.c
+ *
+ * Address map functions for Marvell Loki (88RC8480) SoCs
+ *
+ * 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/mbus.h>
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include "common.h"
+
+/*
+ * Generic Address Decode Windows bit settings
+ */
+#define TARGET_DDR		0
+#define TARGET_DEV_BUS		1
+#define TARGET_PCIE0		3
+#define TARGET_PCIE1		4
+#define ATTR_DEV_BOOT		0x0f
+#define ATTR_DEV_CS2		0x1b
+#define ATTR_DEV_CS1		0x1d
+#define ATTR_DEV_CS0		0x1e
+#define ATTR_PCIE_IO		0x51
+#define ATTR_PCIE_MEM		0x59
+
+/*
+ * Helpers to get DDR bank info
+ */
+#define DDR_SIZE_CS(n)		DDR_REG(0x1500 + ((n) << 3))
+#define DDR_BASE_CS(n)		DDR_REG(0x1504 + ((n) << 3))
+
+/*
+ * CPU Address Decode Windows registers
+ */
+#define CPU_WIN_CTRL(n)		BRIDGE_REG(0x000 | ((n) << 4))
+#define CPU_WIN_BASE(n)		BRIDGE_REG(0x004 | ((n) << 4))
+#define CPU_WIN_REMAP_LO(n)	BRIDGE_REG(0x008 | ((n) << 4))
+#define CPU_WIN_REMAP_HI(n)	BRIDGE_REG(0x00c | ((n) << 4))
+
+
+struct mbus_dram_target_info loki_mbus_dram_info;
+
+static void __init setup_cpu_win(int win, u32 base, u32 size,
+				 u8 target, u8 attr, int remap)
+{
+	u32 ctrl;
+
+	base &= 0xffff0000;
+	ctrl = ((size - 1) & 0xffff0000) | (attr << 8) | (1 << 5) | target;
+
+	writel(base, CPU_WIN_BASE(win));
+	writel(ctrl, CPU_WIN_CTRL(win));
+	if (win < 2) {
+		if (remap < 0)
+			remap = base;
+
+		writel(remap & 0xffff0000, CPU_WIN_REMAP_LO(win));
+		writel(0, CPU_WIN_REMAP_HI(win));
+	}
+}
+
+void __init loki_setup_cpu_mbus(void)
+{
+	int i;
+	int cs;
+
+	/*
+	 * First, disable and clear windows.
+	 */
+	for (i = 0; i < 8; i++) {
+		writel(0, CPU_WIN_BASE(i));
+		writel(0, CPU_WIN_CTRL(i));
+		if (i < 2) {
+			writel(0, CPU_WIN_REMAP_LO(i));
+			writel(0, CPU_WIN_REMAP_HI(i));
+		}
+	}
+
+	/*
+	 * Setup windows for PCIe IO+MEM space.
+	 */
+	setup_cpu_win(2, LOKI_PCIE0_MEM_PHYS_BASE, LOKI_PCIE0_MEM_SIZE,
+		      TARGET_PCIE0, ATTR_PCIE_MEM, -1);
+	setup_cpu_win(3, LOKI_PCIE1_MEM_PHYS_BASE, LOKI_PCIE1_MEM_SIZE,
+		      TARGET_PCIE1, ATTR_PCIE_MEM, -1);
+
+	/*
+	 * Setup MBUS dram target info.
+	 */
+	loki_mbus_dram_info.mbus_dram_target_id = TARGET_DDR;
+
+	for (i = 0, cs = 0; i < 4; i++) {
+		u32 base = readl(DDR_BASE_CS(i));
+		u32 size = readl(DDR_SIZE_CS(i));
+
+		/*
+		 * Chip select enabled?
+		 */
+		if (size & 1) {
+			struct mbus_dram_window *w;
+
+			w = &loki_mbus_dram_info.cs[cs++];
+			w->cs_index = i;
+			w->mbus_attr = 0xf & ~(1 << i);
+			w->base = base & 0xffff0000;
+			w->size = (size | 0x0000ffff) + 1;
+		}
+	}
+	loki_mbus_dram_info.num_cs = cs;
+}
+
+void __init loki_setup_dev_boot_win(u32 base, u32 size)
+{
+	setup_cpu_win(4, base, size, TARGET_DEV_BUS, ATTR_DEV_BOOT, -1);
+}
diff --git a/arch/arm/mach-loki/common.c b/arch/arm/mach-loki/common.c
new file mode 100644
index 000000000000..410f50399dd3
--- /dev/null
+++ b/arch/arm/mach-loki/common.c
@@ -0,0 +1,305 @@
+/*
+ * arch/arm/mach-loki/common.c
+ *
+ * Core functions for Marvell Loki (88RC8480) SoCs
+ *
+ * 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/serial_8250.h>
+#include <linux/mbus.h>
+#include <linux/mv643xx_eth.h>
+#include <asm/page.h>
+#include <asm/timex.h>
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+#include <asm/arch/loki.h>
+#include <asm/plat-orion/orion_nand.h>
+#include <asm/plat-orion/time.h>
+#include "common.h"
+
+/*****************************************************************************
+ * I/O Address Mapping
+ ****************************************************************************/
+static struct map_desc loki_io_desc[] __initdata = {
+	{
+		.virtual	= LOKI_REGS_VIRT_BASE,
+		.pfn		= __phys_to_pfn(LOKI_REGS_PHYS_BASE),
+		.length		= LOKI_REGS_SIZE,
+		.type		= MT_DEVICE,
+	},
+};
+
+void __init loki_map_io(void)
+{
+	iotable_init(loki_io_desc, ARRAY_SIZE(loki_io_desc));
+}
+
+
+/*****************************************************************************
+ * GE0
+ ****************************************************************************/
+struct mv643xx_eth_shared_platform_data loki_ge0_shared_data = {
+	.t_clk		= LOKI_TCLK,
+	.dram		= &loki_mbus_dram_info,
+};
+
+static struct resource loki_ge0_shared_resources[] = {
+	{
+		.name	= "ge0 base",
+		.start	= GE0_PHYS_BASE + 0x2000,
+		.end	= GE0_PHYS_BASE + 0x3fff,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device loki_ge0_shared = {
+	.name		= MV643XX_ETH_SHARED_NAME,
+	.id		= 0,
+	.dev		= {
+		.platform_data	= &loki_ge0_shared_data,
+	},
+	.num_resources	= 1,
+	.resource	= loki_ge0_shared_resources,
+};
+
+static struct resource loki_ge0_resources[] = {
+	{
+		.name	= "ge0 irq",
+		.start	= IRQ_LOKI_GBE_A_INT,
+		.end	= IRQ_LOKI_GBE_A_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device loki_ge0 = {
+	.name		= MV643XX_ETH_NAME,
+	.id		= 0,
+	.num_resources	= 1,
+	.resource	= loki_ge0_resources,
+};
+
+void __init loki_ge0_init(struct mv643xx_eth_platform_data *eth_data)
+{
+	eth_data->shared = &loki_ge0_shared;
+	loki_ge0.dev.platform_data = eth_data;
+
+	writel(0x00079220, GE0_VIRT_BASE + 0x20b0);
+	platform_device_register(&loki_ge0_shared);
+	platform_device_register(&loki_ge0);
+}
+
+
+/*****************************************************************************
+ * GE1
+ ****************************************************************************/
+struct mv643xx_eth_shared_platform_data loki_ge1_shared_data = {
+	.t_clk		= LOKI_TCLK,
+	.dram		= &loki_mbus_dram_info,
+};
+
+static struct resource loki_ge1_shared_resources[] = {
+	{
+		.name	= "ge1 base",
+		.start	= GE1_PHYS_BASE + 0x2000,
+		.end	= GE1_PHYS_BASE + 0x3fff,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device loki_ge1_shared = {
+	.name		= MV643XX_ETH_SHARED_NAME,
+	.id		= 1,
+	.dev		= {
+		.platform_data	= &loki_ge1_shared_data,
+	},
+	.num_resources	= 1,
+	.resource	= loki_ge1_shared_resources,
+};
+
+static struct resource loki_ge1_resources[] = {
+	{
+		.name	= "ge1 irq",
+		.start	= IRQ_LOKI_GBE_B_INT,
+		.end	= IRQ_LOKI_GBE_B_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device loki_ge1 = {
+	.name		= MV643XX_ETH_NAME,
+	.id		= 1,
+	.num_resources	= 1,
+	.resource	= loki_ge1_resources,
+};
+
+void __init loki_ge1_init(struct mv643xx_eth_platform_data *eth_data)
+{
+	eth_data->shared = &loki_ge1_shared;
+	loki_ge1.dev.platform_data = eth_data;
+
+	writel(0x00079220, GE1_VIRT_BASE + 0x20b0);
+	platform_device_register(&loki_ge1_shared);
+	platform_device_register(&loki_ge1);
+}
+
+
+/*****************************************************************************
+ * SAS/SATA
+ ****************************************************************************/
+static struct resource loki_sas_resources[] = {
+	{
+		.name	= "mvsas0 mem",
+		.start	= SAS0_PHYS_BASE,
+		.end	= SAS0_PHYS_BASE + 0x01ff,
+		.flags	= IORESOURCE_MEM,
+	}, {
+		.name	= "mvsas0 irq",
+		.start	= IRQ_LOKI_SAS_A,
+		.end	= IRQ_LOKI_SAS_A,
+		.flags	= IORESOURCE_IRQ,
+	}, {
+		.name	= "mvsas1 mem",
+		.start	= SAS1_PHYS_BASE,
+		.end	= SAS1_PHYS_BASE + 0x01ff,
+		.flags	= IORESOURCE_MEM,
+	}, {
+		.name	= "mvsas1 irq",
+		.start	= IRQ_LOKI_SAS_B,
+		.end	= IRQ_LOKI_SAS_B,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device loki_sas = {
+	.name		= "mvsas",
+	.id		= 0,
+	.dev		= {
+		.coherent_dma_mask	= 0xffffffff,
+	},
+	.num_resources	= ARRAY_SIZE(loki_sas_resources),
+	.resource	= loki_sas_resources,
+};
+
+void __init loki_sas_init(void)
+{
+	writel(0x8300f707, DDR_REG(0x1424));
+	platform_device_register(&loki_sas);
+}
+
+
+/*****************************************************************************
+ * UART0
+ ****************************************************************************/
+static struct plat_serial8250_port loki_uart0_data[] = {
+	{
+		.mapbase	= UART0_PHYS_BASE,
+		.membase	= (char *)UART0_VIRT_BASE,
+		.irq		= IRQ_LOKI_UART0,
+		.flags		= UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
+		.iotype		= UPIO_MEM,
+		.regshift	= 2,
+		.uartclk	= LOKI_TCLK,
+	}, {
+	},
+};
+
+static struct resource loki_uart0_resources[] = {
+	{
+		.start		= UART0_PHYS_BASE,
+		.end		= UART0_PHYS_BASE + 0xff,
+		.flags		= IORESOURCE_MEM,
+	}, {
+		.start		= IRQ_LOKI_UART0,
+		.end		= IRQ_LOKI_UART0,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device loki_uart0 = {
+	.name			= "serial8250",
+	.id			= 0,
+	.dev			= {
+		.platform_data	= loki_uart0_data,
+	},
+	.resource		= loki_uart0_resources,
+	.num_resources		= ARRAY_SIZE(loki_uart0_resources),
+};
+
+void __init loki_uart0_init(void)
+{
+	platform_device_register(&loki_uart0);
+}
+
+
+/*****************************************************************************
+ * UART1
+ ****************************************************************************/
+static struct plat_serial8250_port loki_uart1_data[] = {
+	{
+		.mapbase	= UART1_PHYS_BASE,
+		.membase	= (char *)UART1_VIRT_BASE,
+		.irq		= IRQ_LOKI_UART1,
+		.flags		= UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
+		.iotype		= UPIO_MEM,
+		.regshift	= 2,
+		.uartclk	= LOKI_TCLK,
+	}, {
+	},
+};
+
+static struct resource loki_uart1_resources[] = {
+	{
+		.start		= UART1_PHYS_BASE,
+		.end		= UART1_PHYS_BASE + 0xff,
+		.flags		= IORESOURCE_MEM,
+	}, {
+		.start		= IRQ_LOKI_UART1,
+		.end		= IRQ_LOKI_UART1,
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device loki_uart1 = {
+	.name			= "serial8250",
+	.id			= 1,
+	.dev			= {
+		.platform_data	= loki_uart1_data,
+	},
+	.resource		= loki_uart1_resources,
+	.num_resources		= ARRAY_SIZE(loki_uart1_resources),
+};
+
+void __init loki_uart1_init(void)
+{
+	platform_device_register(&loki_uart1);
+}
+
+
+/*****************************************************************************
+ * Time handling
+ ****************************************************************************/
+static void loki_timer_init(void)
+{
+	orion_time_init(IRQ_LOKI_BRIDGE, LOKI_TCLK);
+}
+
+struct sys_timer loki_timer = {
+	.init = loki_timer_init,
+};
+
+
+/*****************************************************************************
+ * General
+ ****************************************************************************/
+void __init loki_init(void)
+{
+	printk(KERN_INFO "Loki ID: 88RC8480. TCLK=%d.\n", LOKI_TCLK);
+
+	loki_setup_cpu_mbus();
+}
diff --git a/arch/arm/mach-loki/common.h b/arch/arm/mach-loki/common.h
new file mode 100644
index 000000000000..26054fd0f05e
--- /dev/null
+++ b/arch/arm/mach-loki/common.h
@@ -0,0 +1,36 @@
+/*
+ * arch/arm/mach-loki/common.h
+ *
+ * Core functions for Marvell Loki (88RC8480) SoCs
+ *
+ * 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.
+ */
+
+#ifndef __ARCH_LOKI_COMMON_H
+#define __ARCH_LOKI_COMMON_H
+
+struct mv643xx_eth_platform_data;
+
+/*
+ * Basic Loki init functions used early by machine-setup.
+ */
+void loki_map_io(void);
+void loki_init(void);
+void loki_init_irq(void);
+
+extern struct mbus_dram_target_info loki_mbus_dram_info;
+void loki_setup_cpu_mbus(void);
+void loki_setup_dev_boot_win(u32 base, u32 size);
+
+void loki_ge0_init(struct mv643xx_eth_platform_data *eth_data);
+void loki_ge1_init(struct mv643xx_eth_platform_data *eth_data);
+void loki_sas_init(void);
+void loki_uart0_init(void);
+void loki_uart1_init(void);
+
+extern struct sys_timer loki_timer;
+
+
+#endif
diff --git a/arch/arm/mach-loki/irq.c b/arch/arm/mach-loki/irq.c
new file mode 100644
index 000000000000..d839af91fe03
--- /dev/null
+++ b/arch/arm/mach-loki/irq.c
@@ -0,0 +1,21 @@
+/*
+ * arch/arm/mach-loki/irq.c
+ *
+ * Marvell Loki (88RC8480) IRQ handling.
+ *
+ * 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/irq.h>
+#include <asm/io.h>
+#include <asm/plat-orion/irq.h>
+#include "common.h"
+
+void __init loki_init_irq(void)
+{
+	orion_irq_init(0, (void __iomem *)(IRQ_VIRT_BASE + IRQ_MASK_OFF));
+}
diff --git a/arch/arm/mach-loki/lb88rc8480-setup.c b/arch/arm/mach-loki/lb88rc8480-setup.c
new file mode 100644
index 000000000000..d1b9e6e6253a
--- /dev/null
+++ b/arch/arm/mach-loki/lb88rc8480-setup.c
@@ -0,0 +1,100 @@
+/*
+ * arch/arm/mach-loki/lb88rc8480-setup.c
+ *
+ * Marvell LB88RC8480 Development Board Setup
+ *
+ * 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/irq.h>
+#include <linux/mtd/physmap.h>
+#include <linux/mtd/nand.h>
+#include <linux/timer.h>
+#include <linux/ata_platform.h>
+#include <linux/mv643xx_eth.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/arch/loki.h>
+#include "common.h"
+
+#define LB88RC8480_FLASH_BOOT_CS_BASE	0xf8000000
+#define LB88RC8480_FLASH_BOOT_CS_SIZE	SZ_128M
+
+#define LB88RC8480_NOR_BOOT_BASE	0xff000000
+#define LB88RC8480_NOR_BOOT_SIZE	SZ_16M
+
+static struct mtd_partition lb88rc8480_boot_flash_parts[] = {
+	{
+		.name	= "kernel",
+		.offset	= 0,
+		.size	= SZ_2M,
+	}, {
+		.name	= "root-fs",
+		.offset	= SZ_2M,
+		.size	= (SZ_8M + SZ_4M + SZ_1M),
+	}, {
+		.name	= "u-boot",
+		.offset	= (SZ_8M + SZ_4M + SZ_2M + SZ_1M),
+		.size	= SZ_1M,
+	},
+};
+
+static struct physmap_flash_data lb88rc8480_boot_flash_data = {
+	.parts		= lb88rc8480_boot_flash_parts,
+	.nr_parts	= ARRAY_SIZE(lb88rc8480_boot_flash_parts),
+	.width		= 1,	/* 8 bit bus width */
+};
+
+static struct resource lb88rc8480_boot_flash_resource = {
+	.flags	= IORESOURCE_MEM,
+	.start	= LB88RC8480_NOR_BOOT_BASE,
+	.end	= LB88RC8480_NOR_BOOT_BASE + LB88RC8480_NOR_BOOT_SIZE - 1,
+};
+
+static struct platform_device lb88rc8480_boot_flash = {
+	.name	= "physmap-flash",
+	.id	= 0,
+	.dev	= {
+		.platform_data	= &lb88rc8480_boot_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &lb88rc8480_boot_flash_resource,
+};
+
+static struct mv643xx_eth_platform_data lb88rc8480_ge0_data = {
+	.phy_addr	= 1,
+	.mac_addr	= { 0x00, 0x50, 0x43, 0x11, 0x22, 0x33 },
+};
+
+static void __init lb88rc8480_init(void)
+{
+	/*
+	 * Basic setup. Needs to be called early.
+	 */
+	loki_init();
+
+	loki_ge0_init(&lb88rc8480_ge0_data);
+	loki_sas_init();
+	loki_uart0_init();
+	loki_uart1_init();
+
+	loki_setup_dev_boot_win(LB88RC8480_FLASH_BOOT_CS_BASE,
+				LB88RC8480_FLASH_BOOT_CS_SIZE);
+	platform_device_register(&lb88rc8480_boot_flash);
+}
+
+MACHINE_START(LB88RC8480, "Marvell LB88RC8480 Development Board")
+	/* Maintainer: Ke Wei <kewei@marvell.com> */
+	.phys_io	= LOKI_REGS_PHYS_BASE,
+	.io_pg_offst	= ((LOKI_REGS_VIRT_BASE) >> 18) & 0xfffc,
+	.boot_params	= 0x00000100,
+	.init_machine	= lb88rc8480_init,
+	.map_io		= loki_map_io,
+	.init_irq	= loki_init_irq,
+	.timer		= &loki_timer,
+MACHINE_END