[ARM] add Marvell Kirkwood (88F6000) SoC support

The Marvell Kirkwood (88F6000) is a family of ARM SoCs based on a
Shiva CPU core, and features a DDR2 controller, a x1 PCIe interface,
a USB 2.0 interface, a SPI controller, a crypto accelerator, a TS
interface, and IDMA/XOR engines, and depending on the model, also
features one or two Gigabit Ethernet interfaces, two SATA II
interfaces, one or two TWSI interfaces, one or two UARTs, a
TDM/SLIC interface, a NAND controller, an I2S/SPDIF interface, and
an SDIO interface.

This patch adds supports for the Marvell DB-88F6281-BP Development
Board and the RD-88F6192-NAS and the RD-88F6281 Reference Designs,
enabling support for the PCIe interface, the USB interface, the
ethernet interfaces, the SATA interfaces, the TWSI interfaces, the
UARTs, and the NAND controller.

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

12 files changed, 384 insertions, 0 deletions

diff --git a/include/asm-arm/arch-kirkwood/debug-macro.S b/include/asm-arm/arch-kirkwood/debug-macro.S
new file mode 100644
index 000000000000..f55fb8ad9ee4
--- /dev/null
+++ b/include/asm-arm/arch-kirkwood/debug-macro.S
@@ -0,0 +1,20 @@
+/*
+ * include/asm-arm/arch-kirkwood/debug-macro.S
+ *
+ * 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.
+*/
+
+#include <asm/arch/kirkwood.h>
+
+        .macro  addruart,rx
+        mrc     p15, 0, \rx, c1, c0
+        tst     \rx, #1                                 @ MMU enabled?
+        ldreq   \rx, =KIRKWOOD_REGS_PHYS_BASE
+        ldrne   \rx, =KIRKWOOD_REGS_VIRT_BASE
+        orr     \rx, \rx, #0x00012000
+        .endm
+
+#define UART_SHIFT      2
+#include <asm/hardware/debug-8250.S>
diff --git a/include/asm-arm/arch-kirkwood/dma.h b/include/asm-arm/arch-kirkwood/dma.h
new file mode 100644
index 000000000000..40a8c178f10d
--- /dev/null
+++ b/include/asm-arm/arch-kirkwood/dma.h
@@ -0,0 +1 @@
+/* empty */
diff --git a/include/asm-arm/arch-kirkwood/entry-macro.S b/include/asm-arm/arch-kirkwood/entry-macro.S
new file mode 100644
index 000000000000..fc6a43d9355c
--- /dev/null
+++ b/include/asm-arm/arch-kirkwood/entry-macro.S
@@ -0,0 +1,40 @@
+/*
+ * include/asm-arm/arch-kirkwood/entry-macro.S
+ *
+ * Low-level IRQ helper macros for Marvell Kirkwood 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/kirkwood.h>
+
+        .macro  disable_fiq
+        .endm
+
+        .macro  arch_ret_to_user, tmp1, tmp2
+        .endm
+
+        .macro  get_irqnr_preamble, base, tmp
+        ldr     \base, =IRQ_VIRT_BASE
+        .endm
+
+        .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+        @ check low interrupts
+        ldr     \irqstat, [\base, #IRQ_CAUSE_LOW_OFF]
+        ldr     \tmp, [\base, #IRQ_MASK_LOW_OFF]
+        mov     \irqnr, #31
+        ands    \irqstat, \irqstat, \tmp
+        bne     1001f
+
+        @ if no low interrupts set, check high interrupts
+        ldr     \irqstat, [\base, #IRQ_CAUSE_HIGH_OFF]
+        ldr     \tmp, [\base, #IRQ_MASK_HIGH_OFF]
+        mov     \irqnr, #63
+        ands    \irqstat, \irqstat, \tmp
+
+        @ find first active interrupt source
+1001:   clzne   \irqstat, \irqstat
+        subne   \irqnr, \irqnr, \irqstat
+        .endm
diff --git a/include/asm-arm/arch-kirkwood/hardware.h b/include/asm-arm/arch-kirkwood/hardware.h
new file mode 100644
index 000000000000..e695719771a5
--- /dev/null
+++ b/include/asm-arm/arch-kirkwood/hardware.h
@@ -0,0 +1,21 @@
+/*
+ * include/asm-arm/arch-kirkwood/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 "kirkwood.h"
+
+#define pcibios_assign_all_busses()     1
+
+#define PCIBIOS_MIN_IO                  0x00001000
+#define PCIBIOS_MIN_MEM                 0x01000000
+#define PCIMEM_BASE                     KIRKWOOD_PCIE_MEM_PHYS_BASE /* mem base for VGA */
+
+
+#endif
diff --git a/include/asm-arm/arch-kirkwood/io.h b/include/asm-arm/arch-kirkwood/io.h
new file mode 100644
index 000000000000..0ef6e95f5d5b
--- /dev/null
+++ b/include/asm-arm/arch-kirkwood/io.h
@@ -0,0 +1,26 @@
+/*
+ * include/asm-arm/arch-kirkwood/io.h
+ *
+ * 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_IO_H
+#define __ASM_ARCH_IO_H
+
+#include "kirkwood.h"
+
+#define IO_SPACE_LIMIT          0xffffffff
+
+static inline void __iomem *__io(unsigned long addr)
+{
+        return (void __iomem *)((addr - KIRKWOOD_PCIE_IO_PHYS_BASE)
+                                        + KIRKWOOD_PCIE_IO_VIRT_BASE);
+}
+
+#define __io(a)                 __io(a)
+#define __mem_pci(a)            (a)
+
+
+#endif
diff --git a/include/asm-arm/arch-kirkwood/irqs.h b/include/asm-arm/arch-kirkwood/irqs.h
new file mode 100644
index 000000000000..2e7b5da6335c
--- /dev/null
+++ b/include/asm-arm/arch-kirkwood/irqs.h
@@ -0,0 +1,63 @@
+/*
+ * include/asm-arm/arch-kirkwood/irqs.h
+ *
+ * IRQ definitions for Marvell Kirkwood 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 __ASM_ARCH_IRQS_H
+#define __ASM_ARCH_IRQS_H
+
+#include "kirkwood.h"   /* need GPIO_MAX */
+
+/*
+ * Low Interrupt Controller
+ */
+#define IRQ_KIRKWOOD_HIGH_SUM   0
+#define IRQ_KIRKWOOD_BRIDGE     1
+#define IRQ_KIRKWOOD_HOST2CPU   2
+#define IRQ_KIRKWOOD_CPU2HOST   3
+#define IRQ_KIRKWOOD_XOR_00     5
+#define IRQ_KIRKWOOD_XOR_01     6
+#define IRQ_KIRKWOOD_XOR_10     7
+#define IRQ_KIRKWOOD_XOR_11     8
+#define IRQ_KIRKWOOD_PCIE       9
+#define IRQ_KIRKWOOD_GE00_SUM   11
+#define IRQ_KIRKWOOD_GE01_SUM   15
+#define IRQ_KIRKWOOD_USB        19
+#define IRQ_KIRKWOOD_SATA       21
+#define IRQ_KIRKWOOD_CRYPTO     22
+#define IRQ_KIRKWOOD_SPI        23
+#define IRQ_KIRKWOOD_I2S        24
+#define IRQ_KIRKWOOD_TS_0       26
+#define IRQ_KIRKWOOD_SDIO       28
+#define IRQ_KIRKWOOD_TWSI       29
+#define IRQ_KIRKWOOD_AVB        30
+#define IRQ_KIRKWOOD_TDMI       31
+
+/*
+ * High Interrupt Controller
+ */
+#define IRQ_KIRKWOOD_UART_0     33
+#define IRQ_KIRKWOOD_UART_1     34
+#define IRQ_KIRKWOOD_GPIO_LOW_0_7       35
+#define IRQ_KIRKWOOD_GPIO_LOW_8_15      36
+#define IRQ_KIRKWOOD_GPIO_LOW_16_23     37
+#define IRQ_KIRKWOOD_GPIO_LOW_24_31     38
+#define IRQ_KIRKWOOD_GPIO_HIGH_0_7      39
+#define IRQ_KIRKWOOD_GPIO_HIGH_8_15     40
+#define IRQ_KIRKWOOD_GPIO_HIGH_16_23    41
+
+/*
+ * KIRKWOOD General Purpose Pins
+ */
+#define IRQ_KIRKWOOD_GPIO_START 64
+#define NR_GPIO_IRQS            GPIO_MAX
+
+#define NR_IRQS                 (IRQ_KIRKWOOD_GPIO_START + NR_GPIO_IRQS)
+
+
+#endif
diff --git a/include/asm-arm/arch-kirkwood/kirkwood.h b/include/asm-arm/arch-kirkwood/kirkwood.h
new file mode 100644
index 000000000000..520250dbd8a3
--- /dev/null
+++ b/include/asm-arm/arch-kirkwood/kirkwood.h
@@ -0,0 +1,99 @@
+/*
+ * include/asm-arm/arch-kirkwood/kirkwood.h
+ *
+ * Generic definitions for Marvell Kirkwood SoC flavors:
+ *  88F6180, 88F6192 and 88F6281.
+ *
+ * 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_KIRKWOOD_H
+#define __ASM_ARCH_KIRKWOOD_H
+
+/*
+ * Marvell Kirkwood address maps.
+ *
+ * phys
+ * e0000000     PCIe Memory space
+ * f1000000     on-chip peripheral registers
+ * f2000000     PCIe I/O space
+ * f3000000     NAND controller address window
+ *
+ * virt         phys            size
+ * fee00000     f1000000        1M      on-chip peripheral registers
+ * fef00000     f2000000        1M      PCIe I/O space
+ */
+
+#define KIRKWOOD_NAND_MEM_PHYS_BASE     0xf3000000
+#define KIRKWOOD_NAND_MEM_SIZE          SZ_64K /* 1K is sufficient, but 64K
+                                                * is the minimal window size
+                                                */
+
+#define KIRKWOOD_PCIE_IO_PHYS_BASE      0xf2000000
+#define KIRKWOOD_PCIE_IO_VIRT_BASE      0xfef00000
+#define KIRKWOOD_PCIE_IO_BUS_BASE       0x00000000
+#define KIRKWOOD_PCIE_IO_SIZE           SZ_1M
+
+#define KIRKWOOD_REGS_PHYS_BASE         0xf1000000
+#define KIRKWOOD_REGS_VIRT_BASE         0xfee00000
+#define KIRKWOOD_REGS_SIZE              SZ_1M
+
+#define KIRKWOOD_PCIE_MEM_PHYS_BASE     0xe0000000
+#define KIRKWOOD_PCIE_MEM_SIZE          SZ_128M
+
+/*
+ * MBUS bridge registers.
+ */
+#define BRIDGE_VIRT_BASE        (KIRKWOOD_REGS_VIRT_BASE | 0x20000)
+#define  CPU_CONTROL            (BRIDGE_VIRT_BASE | 0x0104)
+#define   CPU_RESET             0x00000002
+//#define   L2_WRITETHROUGH     0x00020000
+#define  RSTOUTn_MASK           (BRIDGE_VIRT_BASE | 0x0108)
+#define   SOFT_RESET_OUT_EN     0x00000004
+#define  SYSTEM_SOFT_RESET      (BRIDGE_VIRT_BASE | 0x010c)
+#define   SOFT_RESET            0x00000001
+#define  BRIDGE_CAUSE           (BRIDGE_VIRT_BASE | 0x0110)
+#define  BRIDGE_MASK            (BRIDGE_VIRT_BASE | 0x0114)
+#define   BRIDGE_INT_TIMER0     0x0002
+#define   BRIDGE_INT_TIMER1     0x0004
+#define   BRIDGE_INT_TIMER1_CLR (~0x0004)
+#define  IRQ_VIRT_BASE          (BRIDGE_VIRT_BASE | 0x0200)
+#define   IRQ_CAUSE_LOW_OFF     0x0000
+#define   IRQ_MASK_LOW_OFF      0x0004
+#define   IRQ_CAUSE_HIGH_OFF    0x0010
+#define   IRQ_MASK_HIGH_OFF     0x0014
+#define  TIMER_VIRT_BASE        (BRIDGE_VIRT_BASE | 0x0300)
+
+/*
+ * Register Map
+ */
+#define DDR_VIRT_BASE           (KIRKWOOD_REGS_VIRT_BASE | 0x00000)
+#define  DDR_WINDOW_CPU_BASE    (DDR_VIRT_BASE | 0x1500)
+
+#define DEV_BUS_PHYS_BASE       (KIRKWOOD_REGS_PHYS_BASE | 0x10000)
+#define DEV_BUS_VIRT_BASE       (KIRKWOOD_REGS_VIRT_BASE | 0x10000)
+#define  SAMPLE_AT_RESET        (DEV_BUS_VIRT_BASE | 0x0030)
+#define  DEVICE_ID              (DEV_BUS_VIRT_BASE | 0x0034)
+#define  RTC_PHYS_BASE          (DEV_BUS_PHYS_BASE | 0x0300)
+#define  SPI_PHYS_BASE          (DEV_BUS_PHYS_BASE | 0x0600)
+#define  UART0_PHYS_BASE        (DEV_BUS_PHYS_BASE | 0x2000)
+#define  UART0_VIRT_BASE        (DEV_BUS_VIRT_BASE | 0x2000)
+#define  UART1_PHYS_BASE        (DEV_BUS_PHYS_BASE | 0x2100)
+#define  UART1_VIRT_BASE        (DEV_BUS_VIRT_BASE | 0x2100)
+
+#define PCIE_VIRT_BASE          (KIRKWOOD_REGS_VIRT_BASE | 0x40000)
+
+#define USB_PHYS_BASE           (KIRKWOOD_REGS_PHYS_BASE | 0x50000)
+
+#define GE00_PHYS_BASE          (KIRKWOOD_REGS_PHYS_BASE | 0x70000)
+#define GE01_PHYS_BASE          (KIRKWOOD_REGS_PHYS_BASE | 0x74000)
+
+#define SATA_PHYS_BASE          (KIRKWOOD_REGS_PHYS_BASE | 0x80000)
+
+
+#define GPIO_MAX                50
+
+
+#endif
diff --git a/include/asm-arm/arch-kirkwood/memory.h b/include/asm-arm/arch-kirkwood/memory.h
new file mode 100644
index 000000000000..e5108f408ce6
--- /dev/null
+++ b/include/asm-arm/arch-kirkwood/memory.h
@@ -0,0 +1,14 @@
+/*
+ * include/asm-arm/arch-kirkwood/memory.h
+ */
+
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_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-kirkwood/system.h b/include/asm-arm/arch-kirkwood/system.h
new file mode 100644
index 000000000000..8dde7e379855
--- /dev/null
+++ b/include/asm-arm/arch-kirkwood/system.h
@@ -0,0 +1,37 @@
+/*
+ * include/asm-arm/arch-kirkwood/system.h
+ *
+ * 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/kirkwood.h>
+
+static inline void arch_idle(void)
+{
+        cpu_do_idle();
+}
+
+static inline void arch_reset(char mode)
+{
+        /*
+         * Enable soft reset to assert RSTOUTn.
+         */
+        writel(SOFT_RESET_OUT_EN, RSTOUTn_MASK);
+
+        /*
+         * Assert soft reset.
+         */
+        writel(SOFT_RESET, SYSTEM_SOFT_RESET);
+
+        while (1)
+                ;
+}
+
+
+#endif
diff --git a/include/asm-arm/arch-kirkwood/timex.h b/include/asm-arm/arch-kirkwood/timex.h
new file mode 100644
index 000000000000..82122e134e3c
--- /dev/null
+++ b/include/asm-arm/arch-kirkwood/timex.h
@@ -0,0 +1,11 @@
+/*
+ * include/asm-arm/arch-kirkwood/timex.h
+ *
+ * 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 CLOCK_TICK_RATE         (100 * HZ)
+
+#define KIRKWOOD_TCLK           166666667
diff --git a/include/asm-arm/arch-kirkwood/uncompress.h b/include/asm-arm/arch-kirkwood/uncompress.h
new file mode 100644
index 000000000000..a9062b6d7680
--- /dev/null
+++ b/include/asm-arm/arch-kirkwood/uncompress.h
@@ -0,0 +1,47 @@
+/*
+ * include/asm-arm/arch-kirkwood/uncompress.h
+ *
+ * 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/serial_reg.h>
+#include <asm/arch/kirkwood.h>
+
+#define SERIAL_BASE     ((unsigned char *)UART0_PHYS_BASE)
+
+static void putc(const char c)
+{
+        unsigned char *base = SERIAL_BASE;
+        int i;
+
+        for (i = 0; i < 0x1000; i++) {
+                if (base[UART_LSR << 2] & UART_LSR_THRE)
+                        break;
+                barrier();
+        }
+
+        base[UART_TX << 2] = c;
+}
+
+static void flush(void)
+{
+        unsigned char *base = SERIAL_BASE;
+        unsigned char mask;
+        int i;
+
+        mask = UART_LSR_TEMT | UART_LSR_THRE;
+
+        for (i = 0; i < 0x1000; i++) {
+                if ((base[UART_LSR << 2] & mask) == mask)
+                        break;
+                barrier();
+        }
+}
+
+/*
+ * nothing to do
+ */
+#define arch_decomp_setup()
+#define arch_decomp_wdog()
diff --git a/include/asm-arm/arch-kirkwood/vmalloc.h b/include/asm-arm/arch-kirkwood/vmalloc.h
new file mode 100644
index 000000000000..41852c6e77f3
--- /dev/null
+++ b/include/asm-arm/arch-kirkwood/vmalloc.h
@@ -0,0 +1,5 @@
+/*
+ * include/asm-arm/arch-kirkwood/vmalloc.h
+ */
+
+#define VMALLOC_END     0xfe800000