[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 00000000000..f55fb8ad9ee
--- /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 00000000000..40a8c178f10
--- /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 00000000000..fc6a43d9355
--- /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 00000000000..e695719771a
--- /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 00000000000..0ef6e95f5d5
--- /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 00000000000..2e7b5da6335
--- /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 00000000000..520250dbd8a
--- /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 00000000000..e5108f408ce
--- /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 00000000000..8dde7e37985
--- /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 00000000000..82122e134e3
--- /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 00000000000..a9062b6d768
--- /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 00000000000..41852c6e77f
--- /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