[ARM] basic support for the Marvell Orion SoC family

The Marvell Orion is a family of ARM SoCs with a DDR/DDR2 memory
controller, 10/100/1000 ethernet MAC, and USB 2.0 interfaces,
and, depending on the specific model, PCI-E interface, PCI-X
interface, SATA controllers, crypto unit, SPI interface, SDIO
interface, device bus, NAND controller, DMA engine and/or XOR
engine.

This contains the basic structure and architecture register definitions.

Signed-off-by: Tzachi Perelstein <tzachi@marvell.com>
Reviewed-by: Nicolas Pitre <nico@marvell.com>
Reviewed-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>

12 files changed, 408 insertions, 0 deletions

diff --git a/include/asm-arm/arch-orion/debug-macro.S b/include/asm-arm/arch-orion/debug-macro.S
new file mode 100644
index 000000000000..e2a80641f214
--- /dev/null
+++ b/include/asm-arm/arch-orion/debug-macro.S
@@ -0,0 +1,17 @@
+/*
+ * linux/include/asm-arm/arch-orion/debug-macro.S
+ *
+ * Debugging macro include header
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+        .macro  addruart,rx
+        mov   \rx, #0xf1000000
+        orr   \rx, \rx, #0x00012000
+        .endm
+
+#define UART_SHIFT      2
+#include <asm/hardware/debug-8250.S>
diff --git a/include/asm-arm/arch-orion/dma.h b/include/asm-arm/arch-orion/dma.h
new file mode 100644
index 000000000000..40a8c178f10d
--- /dev/null
+++ b/include/asm-arm/arch-orion/dma.h
@@ -0,0 +1 @@
+/* empty */
diff --git a/include/asm-arm/arch-orion/entry-macro.S b/include/asm-arm/arch-orion/entry-macro.S
new file mode 100644
index 000000000000..b76075a7e44b
--- /dev/null
+++ b/include/asm-arm/arch-orion/entry-macro.S
@@ -0,0 +1,31 @@
+/*
+ * include/asm-arm/arch-orion/entry-macro.S
+ *
+ * Low-level IRQ helper macros for Orion platforms
+ *
+ * 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 <asm/arch/orion.h>
+
+        .macro  disable_fiq
+        .endm
+
+        .macro  arch_ret_to_user, tmp1, tmp2
+        .endm
+
+        .macro  get_irqnr_preamble, base, tmp
+        ldr     \base, =MAIN_IRQ_CAUSE
+        .endm
+
+        .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+        ldr     \irqstat, [\base, #0]           @ main cause
+        ldr     \tmp, [\base, #(MAIN_IRQ_MASK - MAIN_IRQ_CAUSE)] @ main mask
+        mov     \irqnr, #0                      @ default irqnr
+        @ find cause bits that are unmasked
+        ands    \irqstat, \irqstat, \tmp        @ clear Z flag if any
+        clzne   \irqnr, \irqstat                @ calc irqnr
+        rsbne   \irqnr, \irqnr, #31
+        .endm
diff --git a/include/asm-arm/arch-orion/hardware.h b/include/asm-arm/arch-orion/hardware.h
new file mode 100644
index 000000000000..8a12d213fbdc
--- /dev/null
+++ b/include/asm-arm/arch-orion/hardware.h
@@ -0,0 +1,24 @@
+/*
+ * include/asm-arm/arch-orion/hardware.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#ifndef __ASM_ARCH_HARDWARE_H__
+#define __ASM_ARCH_HARDWARE_H__
+
+#include "orion.h"
+
+#define PCI_MEMORY_VADDR        ORION_PCI_SYS_MEM_BASE
+#define PCI_IO_VADDR            ORION_PCI_SYS_IO_BASE
+
+#define pcibios_assign_all_busses()  1
+
+#define PCIBIOS_MIN_IO  0x1000
+#define PCIBIOS_MIN_MEM 0x01000000
+#define PCIMEM_BASE     PCI_MEMORY_VADDR /* mem base for VGA */
+
+#endif  /* _ASM_ARCH_HARDWARE_H */
diff --git a/include/asm-arm/arch-orion/io.h b/include/asm-arm/arch-orion/io.h
new file mode 100644
index 000000000000..e0b8c39b9167
--- /dev/null
+++ b/include/asm-arm/arch-orion/io.h
@@ -0,0 +1,27 @@
+/*
+ * include/asm-arm/arch-orion/io.h
+ *
+ * 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.
+ */
+
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#include "orion.h"
+
+#define IO_SPACE_LIMIT          0xffffffff
+#define IO_SPACE_REMAP          ORION_PCI_SYS_IO_BASE
+
+static inline void __iomem *__io(unsigned long addr)
+{
+        return (void __iomem *)addr;
+}
+
+#define __io(a)                 __io(a)
+#define __mem_pci(a)            (a)
+
+#endif
diff --git a/include/asm-arm/arch-orion/irqs.h b/include/asm-arm/arch-orion/irqs.h
new file mode 100644
index 000000000000..eea65ca6076a
--- /dev/null
+++ b/include/asm-arm/arch-orion/irqs.h
@@ -0,0 +1,61 @@
+/*
+ * include/asm-arm/arch-orion/irqs.h
+ *
+ * IRQ definitions for Orion SoC
+ *
+ *  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.
+ */
+
+#ifndef __ASM_ARCH_IRQS_H__
+#define __ASM_ARCH_IRQS_H__
+
+#include "orion.h"      /* need GPIO_MAX */
+
+/*
+ * Orion Main Interrupt Controller
+ */
+#define IRQ_ORION_BRIDGE        0
+#define IRQ_ORION_DOORBELL_H2C  1
+#define IRQ_ORION_DOORBELL_C2H  2
+#define IRQ_ORION_UART0         3
+#define IRQ_ORION_UART1         4
+#define IRQ_ORION_I2C           5
+#define IRQ_ORION_GPIO_0_7      6
+#define IRQ_ORION_GPIO_8_15     7
+#define IRQ_ORION_GPIO_16_23    8
+#define IRQ_ORION_GPIO_24_31    9
+#define IRQ_ORION_PCIE0_ERR     10
+#define IRQ_ORION_PCIE0_INT     11
+#define IRQ_ORION_USB1_CTRL     12
+#define IRQ_ORION_DEV_BUS_ERR   14
+#define IRQ_ORION_PCI_ERR       15
+#define IRQ_ORION_USB_BR_ERR    16
+#define IRQ_ORION_USB0_CTRL     17
+#define IRQ_ORION_ETH_RX        18
+#define IRQ_ORION_ETH_TX        19
+#define IRQ_ORION_ETH_MISC      20
+#define IRQ_ORION_ETH_SUM       21
+#define IRQ_ORION_ETH_ERR       22
+#define IRQ_ORION_IDMA_ERR      23
+#define IRQ_ORION_IDMA_0        24
+#define IRQ_ORION_IDMA_1        25
+#define IRQ_ORION_IDMA_2        26
+#define IRQ_ORION_IDMA_3        27
+#define IRQ_ORION_CESA          28
+#define IRQ_ORION_SATA          29
+#define IRQ_ORION_XOR0          30
+#define IRQ_ORION_XOR1          31
+
+/*
+ * Orion General Purpose Pins
+ */
+#define IRQ_ORION_GPIO_START    32
+#define NR_GPIO_IRQS            GPIO_MAX
+
+#define NR_IRQS                 (IRQ_ORION_GPIO_START + NR_GPIO_IRQS)
+
+#endif /* __ASM_ARCH_IRQS_H__ */
diff --git a/include/asm-arm/arch-orion/memory.h b/include/asm-arm/arch-orion/memory.h
new file mode 100644
index 000000000000..d954dba87ced
--- /dev/null
+++ b/include/asm-arm/arch-orion/memory.h
@@ -0,0 +1,15 @@
+/*
+ * include/asm-arm/arch-orion/memory.h
+ *
+ * Marvell Orion memory definitions
+ */
+
+#ifndef __ASM_ARCH_MMU_H
+#define __ASM_ARCH_MMU_H
+
+#define PHYS_OFFSET     UL(0x00000000)
+
+#define __virt_to_bus(x)        __virt_to_phys(x)
+#define __bus_to_virt(x)        __phys_to_virt(x)
+
+#endif
diff --git a/include/asm-arm/arch-orion/orion.h b/include/asm-arm/arch-orion/orion.h
new file mode 100644
index 000000000000..061c03c5a17e
--- /dev/null
+++ b/include/asm-arm/arch-orion/orion.h
@@ -0,0 +1,140 @@
+/*
+ * include/asm-arm/arch-orion/orion.h
+ *
+ * Generic definitions of Orion SoC flavors:
+ *  Orion-1, Orion-NAS, Orion-VoIP, and Orion-2.
+ *
+ * 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.
+ */
+
+#ifndef __ASM_ARCH_ORION_H__
+#define __ASM_ARCH_ORION_H__
+
+/*******************************************************************************
+ * Orion Address Map
+ * Use the same mapping (1:1 virtual:physical) of internal registers and
+ * PCI system (PCI+PCIE) for all machines.
+ * Each machine defines the rest of its mapping (e.g. device bus flashes)
+ ******************************************************************************/
+#define ORION_REGS_BASE         0xf1000000
+#define ORION_REGS_SIZE         SZ_1M
+
+#define ORION_PCI_SYS_MEM_BASE  0xe0000000
+#define ORION_PCIE_MEM_BASE     ORION_PCI_SYS_MEM_BASE
+#define ORION_PCIE_MEM_SIZE     SZ_128M
+#define ORION_PCI_MEM_BASE      (ORION_PCIE_MEM_BASE + ORION_PCIE_MEM_SIZE)
+#define ORION_PCI_MEM_SIZE      SZ_128M
+
+#define ORION_PCI_SYS_IO_BASE   0xf2000000
+#define ORION_PCIE_IO_BASE      ORION_PCI_SYS_IO_BASE
+#define ORION_PCIE_IO_SIZE      SZ_1M
+#define ORION_PCIE_IO_REMAP     (ORION_PCIE_IO_BASE - ORION_PCI_SYS_IO_BASE)
+#define ORION_PCI_IO_BASE       (ORION_PCIE_IO_BASE + ORION_PCIE_IO_SIZE)
+#define ORION_PCI_IO_SIZE       SZ_1M
+#define ORION_PCI_IO_REMAP      (ORION_PCI_IO_BASE - ORION_PCI_SYS_IO_BASE)
+/* Relevant only for Orion-NAS */
+#define ORION_PCIE_WA_BASE      0xf0000000
+#define ORION_PCIE_WA_SIZE      SZ_16M
+
+/*******************************************************************************
+ * Supported Devices & Revisions
+ ******************************************************************************/
+/* Orion-NAS (88F5182) */
+#define MV88F5182_DEV_ID        0x5182
+#define MV88F5182_REV_A2        2
+/* Orion-2 (88F5281) */
+#define MV88F5281_DEV_ID        0x5281
+#define MV88F5281_REV_D1        5
+#define MV88F5281_REV_D2        6
+
+/*******************************************************************************
+ * Orion Registers Map
+ ******************************************************************************/
+#define ORION_DDR_REG_BASE      (ORION_REGS_BASE | 0x00000)
+#define ORION_DEV_BUS_REG_BASE  (ORION_REGS_BASE | 0x10000)
+#define ORION_BRIDGE_REG_BASE   (ORION_REGS_BASE | 0x20000)
+#define ORION_PCI_REG_BASE      (ORION_REGS_BASE | 0x30000)
+#define ORION_PCIE_REG_BASE     (ORION_REGS_BASE | 0x40000)
+#define ORION_USB0_REG_BASE     (ORION_REGS_BASE | 0x50000)
+#define ORION_ETH_REG_BASE      (ORION_REGS_BASE | 0x70000)
+#define ORION_SATA_REG_BASE     (ORION_REGS_BASE | 0x80000)
+#define ORION_USB1_REG_BASE     (ORION_REGS_BASE | 0xa0000)
+
+#define ORION_DDR_REG(x)        (ORION_DDR_REG_BASE | (x))
+#define ORION_DEV_BUS_REG(x)    (ORION_DEV_BUS_REG_BASE | (x))
+#define ORION_BRIDGE_REG(x)     (ORION_BRIDGE_REG_BASE | (x))
+#define ORION_PCI_REG(x)        (ORION_PCI_REG_BASE | (x))
+#define ORION_PCIE_REG(x)       (ORION_PCIE_REG_BASE | (x))
+#define ORION_USB0_REG(x)       (ORION_USB0_REG_BASE | (x))
+#define ORION_USB1_REG(x)       (ORION_USB1_REG_BASE | (x))
+#define ORION_ETH_REG(x)        (ORION_ETH_REG_BASE | (x))
+#define ORION_SATA_REG(x)       (ORION_SATA_REG_BASE | (x))
+
+/*******************************************************************************
+ * Device Bus Registers
+ ******************************************************************************/
+#define MPP_0_7_CTRL            ORION_DEV_BUS_REG(0x000)
+#define MPP_8_15_CTRL           ORION_DEV_BUS_REG(0x004)
+#define MPP_16_19_CTRL          ORION_DEV_BUS_REG(0x050)
+#define MPP_DEV_CTRL            ORION_DEV_BUS_REG(0x008)
+#define MPP_RESET_SAMPLE        ORION_DEV_BUS_REG(0x010)
+#define GPIO_OUT                ORION_DEV_BUS_REG(0x100)
+#define GPIO_IO_CONF            ORION_DEV_BUS_REG(0x104)
+#define GPIO_BLINK_EN           ORION_DEV_BUS_REG(0x108)
+#define GPIO_IN_POL             ORION_DEV_BUS_REG(0x10c)
+#define GPIO_DATA_IN            ORION_DEV_BUS_REG(0x110)
+#define GPIO_EDGE_CAUSE         ORION_DEV_BUS_REG(0x114)
+#define GPIO_EDGE_MASK          ORION_DEV_BUS_REG(0x118)
+#define GPIO_LEVEL_MASK         ORION_DEV_BUS_REG(0x11c)
+#define DEV_BANK_0_PARAM        ORION_DEV_BUS_REG(0x45c)
+#define DEV_BANK_1_PARAM        ORION_DEV_BUS_REG(0x460)
+#define DEV_BANK_2_PARAM        ORION_DEV_BUS_REG(0x464)
+#define DEV_BANK_BOOT_PARAM     ORION_DEV_BUS_REG(0x46c)
+#define DEV_BUS_CTRL            ORION_DEV_BUS_REG(0x4c0)
+#define DEV_BUS_INT_CAUSE       ORION_DEV_BUS_REG(0x4d0)
+#define DEV_BUS_INT_MASK        ORION_DEV_BUS_REG(0x4d4)
+#define I2C_BASE                ORION_DEV_BUS_REG(0x1000)
+#define UART0_BASE              ORION_DEV_BUS_REG(0x2000)
+#define UART1_BASE              ORION_DEV_BUS_REG(0x2100)
+#define GPIO_MAX                32
+
+/***************************************************************************
+ * Orion CPU Bridge Registers
+ **************************************************************************/
+#define CPU_CONF                ORION_BRIDGE_REG(0x100)
+#define CPU_CTRL                ORION_BRIDGE_REG(0x104)
+#define CPU_RESET_MASK          ORION_BRIDGE_REG(0x108)
+#define CPU_SOFT_RESET          ORION_BRIDGE_REG(0x10c)
+#define POWER_MNG_CTRL_REG      ORION_BRIDGE_REG(0x11C)
+#define BRIDGE_CAUSE            ORION_BRIDGE_REG(0x110)
+#define BRIDGE_MASK             ORION_BRIDGE_REG(0x114)
+#define MAIN_IRQ_CAUSE          ORION_BRIDGE_REG(0x200)
+#define MAIN_IRQ_MASK           ORION_BRIDGE_REG(0x204)
+#define TIMER_CTRL              ORION_BRIDGE_REG(0x300)
+#define TIMER_VAL(x)            ORION_BRIDGE_REG(0x314 + ((x) * 8))
+#define TIMER_VAL_RELOAD(x)     ORION_BRIDGE_REG(0x310 + ((x) * 8))
+
+#ifndef __ASSEMBLY__
+
+/*******************************************************************************
+ * Helpers to access Orion registers
+ ******************************************************************************/
+#include <asm/types.h>
+#include <asm/io.h>
+
+#define orion_read(r)           __raw_readl(r)
+#define orion_write(r, val)     __raw_writel(val, r)
+
+/*
+ * These are not preempt safe. Locks, if needed, must be taken care by caller.
+ */
+#define orion_setbits(r, mask)  orion_write((r), orion_read(r) | (mask))
+#define orion_clrbits(r, mask)  orion_write((r), orion_read(r) & ~(mask))
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __ASM_ARCH_ORION_H__ */
diff --git a/include/asm-arm/arch-orion/system.h b/include/asm-arm/arch-orion/system.h
new file mode 100644
index 000000000000..17704c68f90e
--- /dev/null
+++ b/include/asm-arm/arch-orion/system.h
@@ -0,0 +1,31 @@
+/*
+ * include/asm-arm/arch-orion/system.h
+ *
+ * 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.
+ */
+
+#ifndef __ASM_ARCH_SYSTEM_H
+#define __ASM_ARCH_SYSTEM_H
+
+#include <asm/arch/hardware.h>
+#include <asm/arch/orion.h>
+
+static inline void arch_idle(void)
+{
+        cpu_do_idle();
+}
+
+static inline void arch_reset(char mode)
+{
+        /*
+         * Enable and issue soft reset
+         */
+        orion_setbits(CPU_RESET_MASK, (1 << 2));
+        orion_setbits(CPU_SOFT_RESET, 1);
+}
+
+#endif
diff --git a/include/asm-arm/arch-orion/timex.h b/include/asm-arm/arch-orion/timex.h
new file mode 100644
index 000000000000..26c2c91eecf0
--- /dev/null
+++ b/include/asm-arm/arch-orion/timex.h
@@ -0,0 +1,12 @@
+/*
+ * include/asm-arm/arch-orion/timex.h
+ *
+ * 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.
+ */
+
+#define ORION_TCLK              166666667
+#define CLOCK_TICK_RATE         ORION_TCLK
diff --git a/include/asm-arm/arch-orion/uncompress.h b/include/asm-arm/arch-orion/uncompress.h
new file mode 100644
index 000000000000..a1a222fb438c
--- /dev/null
+++ b/include/asm-arm/arch-orion/uncompress.h
@@ -0,0 +1,44 @@
+/*
+ * include/asm-arm/arch-orion/uncompress.h
+ *
+ * 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 <asm/arch/orion.h>
+
+#define MV_UART_LSR     ((volatile unsigned char *)(UART0_BASE + 0x14))
+#define MV_UART_THR     ((volatile unsigned char *)(UART0_BASE + 0x0))
+
+#define LSR_THRE        0x20
+
+static void putc(const char c)
+{
+        int j = 0x1000;
+        while (--j && !(*MV_UART_LSR & LSR_THRE))
+                barrier();
+        *MV_UART_THR = c;
+}
+
+static void flush(void)
+{
+}
+
+static void orion_early_putstr(const char *ptr)
+{
+        char c;
+        while ((c = *ptr++) != '\0') {
+                if (c == '\n')
+                        putc('\r');
+                putc(c);
+        }
+}
+
+/*
+ * nothing to do
+ */
+#define arch_decomp_setup()
+#define arch_decomp_wdog()
diff --git a/include/asm-arm/arch-orion/vmalloc.h b/include/asm-arm/arch-orion/vmalloc.h
new file mode 100644
index 000000000000..23e2a102fe0c
--- /dev/null
+++ b/include/asm-arm/arch-orion/vmalloc.h
@@ -0,0 +1,5 @@
+/*
+ * include/asm-arm/arch-orion/vmalloc.h
+ */
+
+#define VMALLOC_END       0xf0000000