Support for NXP LPC2K SoCs

new file mode 100644
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@@ -0,0 +1,25 @@
+/*
+ * Copyright 2011 Team Embedded VOF
+ *     Ithamar R. Adema <[email protected]>
+ *
+ * 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 MACH_LPC2K_HARDWARE_H
+#define MACH_LPC2K_HARDWARE_H
+
+#include <asm/sizes.h>
+
+/* Default memory size if no ATAGS found */
+#define MEM_SIZE	(SZ_32M)
+
+#define APB_WDT_BASE		0xe0000000
+#define APB_TIMER0_BASE		0xe0004000
+#define APB_TIMER1_BASE		0xe0008000
+#define APB_UART0_BASE		0xe000c000
+#define APB_SCB_BASE		0xe01fc000
+#define APH_VIC_BASE		0xfffff000
+
+#endif /* MACH_LPC2K_HARDWARE_H */

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@@ -0,0 +1,18 @@
+/*
+ * Copyright 2011 Team Embedded VOF
+ *     Ithamar R. Adema <[email protected]>
+ *
+ * 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 MACH_LPC2K_IO_H
+#define MACH_LPC2K_IO_H
+
+#define IO_SPACE_LIMIT	0xffffffff
+
+#define __mem_pci(a)	(a)
+#define __io(a)		__typesafe_io(a)
+
+#endif /* MACH_LPC2K_IO_H */

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@@ -0,0 +1,15 @@
+/*
+ * Copyright 2011 Team Embedded VOF
+ *     Ithamar R. Adema <[email protected]>
+ *
+ * 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 MACH_LPC2K_MEMORY_H
+#define MACH_LPC2K_MEMORY_H
+
+#define PHYS_OFFSET	0xa0000000
+
+#endif /* MACH_LPC2K_MEMORY_H */

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index 0000000..eb6ab91
@@ -0,0 +1,26 @@
+/*
+ * Watchdog Timer register definitions
+ *
+ * Copyright 2011 Team Embedded VOF
+ *     Ithamar R. Adema <[email protected]>
+ *
+ * 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 MACH_LPC2K_REGS_WDT_H
+#define MACH_LPC2K_REGS_WDT_H
+
+#define WDMOD		0x0000
+#define WDTC		0x0004
+#define WDFEED		0x0008
+#define WDTV		0x000a
+#define WDCLKSEL	0x0010
+
+#define WDMOD_WDEN	(1 << 0)
+#define WDMOD_WDRESET	(1 << 1)
+#define WDMOD_WDTOF	(1 << 2)
+#define WDMOD_WDINT	(1 << 3)
+
+#endif /* MACH_LPC2K_REGS_WDT_H */

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index 0000000..ba7c8dc
@@ -0,0 +1,15 @@
+/*
+ * Copyright 2011 Team Embedded VOF
+ *     Ithamar R. Adema <[email protected]>
+ *
+ * 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 MACH_LPC2K_TIMEX_H
+#define MACH_LPC2K_TIMEX_H
+
+#define CLOCK_TICK_RATE		(HZ * 100UL)
+
+#endif /* MACH_LPC2K_TIMEX_H */

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index 0000000..58d291d
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2011 Team Embeded VOF
+ *     Ithamar R. Adema <[email protected]>
+ *
+ * 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 <linux/module.h>
+#include <asm/hardware/vic.h>
+#include <mach/hardware.h>
+
+void __init lpc2k_init_irq(void)
+{
+	vic_init((void __iomem *)APH_VIC_BASE, 0, ~0, 0);
+}

index f0000e1..db101fc 100644
@@ -758,7 +758,7 @@ static void __init kuser_get_tls_init(unsigned long vectors)
 
 void __init early_trap_init(void)
 {
-#if defined(CONFIG_CPU_USE_DOMAINS)
+#if defined(CONFIG_CPU_USE_DOMAINS) || !defined(CONFIG_MMU)
 	unsigned long vectors = CONFIG_VECTORS_BASE;
 #else
 	unsigned long vectors = (unsigned long)vectors_page;

index 687d023..e3bec02 100644
@@ -24,7 +24,9 @@ void __init arm_mm_memblock_reserve(void)
 	 * some architectures which the DRAM is the exception vector to trap,
 	 * alloc_page breaks with error, although it is not NULL, but "0."
 	 */
+#if PHYS_OFFSET <= CONFIG_VECTORS_BASE
 	memblock_reserve(CONFIG_VECTORS_BASE, PAGE_SIZE);
+#endif
 }
 
 /*

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index 0000000..92267cc
@@ -0,0 +1,17 @@
+/*
+ *  Copyright (C) 2011 Team Embedded VOF
+ *     Ithamar R. Adema <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef MACH_LPC2K_CLKDEV_H
+#define MACH_LPC2K_CLKDEV_H
+
+#define __clk_get(clk) ({ 1; })
+#define __clk_put(clk) do { } while (0)
+
+#endif /* MACH_LPC2K_CLKDEV_H */

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index 0000000..533e3da
@@ -0,0 +1,25 @@
+/*
+ *  Copyright (C) 2011 Team Embedded VOF
+ *     Ithamar R. Adema <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#ifndef MACH_LPC2K_GPIO_H
+#define MACH_LPC2K_GPIO_H
+
+#include <asm-generic/gpio.h>
+
+#define gpio_get_value		__gpio_get_value
+#define gpio_set_value		__gpio_set_value
+#define gpio_cansleep		__gpio_cansleep
+#define gpio_to_irq		__gpio_to_irq
+
+/* Convert from PX.Y notation to GPIO number */
+#define LPC2K_GPIO(port,pin)	(((port) * 32) + (pin))
+
+#endif /* MACH_LPC2K_GPIO_H */

index 3463b47..b8c471b 100644
@@ -15,10 +15,12 @@
 /* Default memory size if no ATAGS found */
 #define MEM_SIZE	(SZ_32M)
 
+#define FAST_GPIO_BASE		0x3fffc000
 #define APB_WDT_BASE		0xe0000000
 #define APB_TIMER0_BASE		0xe0004000
 #define APB_TIMER1_BASE		0xe0008000
 #define APB_UART0_BASE		0xe000c000
+#define APB_GPIO_BASE		0xe0028000
 #define APB_SCB_BASE		0xe01fc000
 #define APH_VIC_BASE		0xfffff000
 

index 87b80dd..9207702 100644
@@ -44,6 +44,9 @@
 #define IRQ_LPC2K_I2C2		30
 #define IRQ_LPC2K_I2S		31
 
-#define NR_IRQS			32
+#define IRQ_LPC2K_PORT0(pin)	(32 + (pin))
+#define IRQ_LPC2K_PORT2(pin)	(64 + (pin))
+
+#define NR_IRQS			96
 
 #endif /* MACH_LPC2K_IRQS_H */

index b8c471b..1a20126 100644
@@ -21,6 +21,7 @@
 #define APB_TIMER1_BASE		0xe0008000
 #define APB_UART0_BASE		0xe000c000
 #define APB_GPIO_BASE		0xe0028000
+#define APB_PINSEL_BASE		0xe002c000
 #define APB_SCB_BASE		0xe01fc000
 #define APH_VIC_BASE		0xfffff000
 

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index 0000000..6b775d9
@@ -0,0 +1,21 @@
+/*
+ * Copyright 2011 Team Embedded VOF
+ *     Ithamar R. Adema <[email protected]>
+ *
+ * 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 LPC2K_COMMON_H
+#define LPC2K_COMMON_H
+
+struct sys_timer;
+
+extern void lpc2k_init_clocks(unsigned long xtal, unsigned long rtc);
+extern void lpc2k_mfp_config(unsigned long *mfp_cfgs, int num);
+extern void lpc2k_init_irq(void);
+
+extern struct sys_timer lpc2k_timer;
+
+#endif /* LPC2K_COMMON_H */

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index 6b775d9..1d4c21e 100644
@@ -16,6 +16,10 @@ extern void lpc2k_init_clocks(unsigned long xtal, unsigned long rtc);
 extern void lpc2k_mfp_config(unsigned long *mfp_cfgs, int num);
 extern void lpc2k_init_irq(void);
 
+extern void lpc2k_add_uart(int nr);
+extern void lpc2k_add_ssp(int nr, void *platform_data);
+extern void lpc2k_add_mci(void *platform_data, int pwr_high);
+
 extern struct sys_timer lpc2k_timer;
 
 #endif /* LPC2K_COMMON_H */

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index 1a20126..b2e3a18 100644
@@ -20,8 +20,14 @@
 #define APB_TIMER0_BASE		0xe0004000
 #define APB_TIMER1_BASE		0xe0008000
 #define APB_UART0_BASE		0xe000c000
+#define APB_UART1_BASE		0xe0010000
 #define APB_GPIO_BASE		0xe0028000
 #define APB_PINSEL_BASE		0xe002c000
+#define APB_SSP1_BASE		0xe0030000
+#define APB_SSP0_BASE		0xe0068000
+#define APB_UART2_BASE		0xe0078000
+#define APB_UART3_BASE		0xe007c000
+#define APB_MCI_BASE		0xe008c000
 #define APB_SCB_BASE		0xe01fc000
 #define APH_VIC_BASE		0xfffff000
 

index d59f5ba..4d7e95b 100644
@@ -8,6 +8,8 @@
  */
 
 #include <linux/module.h>
+#include <linux/amba/pl022.h>
+#include <linux/amba/mmci.h>
 #include <linux/gpio.h>
 #include <linux/io.h>
 

@@ -96,9 +98,27 @@ static unsigned long mfp_cfgs[] __initdata = {
 	P1_12_MCIDAT3,
 };
 
+static struct pl022_ssp_controller ssp0_plat_data = {
+	.bus_id = 0,
+	.enable_dma = 0,
+	.num_chipselect = 1,
+};
+
+static struct mmci_platform_data mci_plat_data = {
+	.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
+	.capabilities = MMC_CAP_4_BIT_DATA,
+	.f_max = 200000,
+	.gpio_cd = -1,
+	.gpio_wp = -1,
+};
+
 void __init ea2478devkit_init_machine(void)
 {
 	lpc2k_mfp_config(mfp_cfgs, ARRAY_SIZE(mfp_cfgs));
+
+	lpc2k_add_uart(0);
+	lpc2k_add_ssp(0, &ssp0_plat_data);
+	lpc2k_add_mci(&mci_plat_data, 0 /* active low */);
 }
 
 static void __init ea2478devkit_init_irq(void)

index cb86e7d..c4c542c 100644
@@ -1971,21 +1971,10 @@ int filemap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 }
 EXPORT_SYMBOL(filemap_fault);
 
-/*
- * Access another process' address space.
- * - source/target buffer must be kernel space
- */
-int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write)
+static int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
+		unsigned long addr, void *buf, int len, int write)
 {
 	struct vm_area_struct *vma;
-	struct mm_struct *mm;
-
-	if (addr + len < addr)
-		return 0;
-
-	mm = get_task_mm(tsk);
-	if (!mm)
-		return 0;
 
 	down_read(&mm->mmap_sem);
 

@@ -2010,6 +1999,43 @@ int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, in
 	}
 
 	up_read(&mm->mmap_sem);
+
+	return len;
+}
+
+/**
+ * @access_remote_vm - access another process' address space
+ * @mm:		the mm_struct of the target address space
+ * @addr:	start address to access
+ * @buf:	source or destination buffer
+ * @len:	number of bytes to transfer
+ * @write:	whether the access is a write
+ *
+ * The caller must hold a reference on @mm.
+ */
+int access_remote_vm(struct mm_struct *mm, unsigned long addr,
+		void *buf, int len, int write)
+{
+	return __access_remote_vm(NULL, mm, addr, buf, len, write);
+}
+
+/*
+ * Access another process' address space.
+ * - source/target buffer must be kernel space
+ */
+int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write)
+{
+	struct mm_struct *mm;
+
+	if (addr + len < addr)
+		return 0;
+
+	mm = get_task_mm(tsk);
+	if (!mm)
+		return 0;
+
+	len = __access_remote_vm(tsk, mm, addr, buf, len, write);
+
 	mmput(mm);
 	return len;
 }