[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