ARM: S5P6442: Add Samsung S5P6442 CPU support

This patch adds support for Samsung S5P6442 CPU. This patch also adds
an entry for S5P6442 cpu in plat-s5p cpu table.

Signed-off-by: Adityapratap Sharma <aditya.ps@samsung.com>
Signed-off-by: Atul Dahiya <atul.dahiya@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

8 files changed, 352 insertions, 0 deletions

diff --git a/arch/arm/mach-s5p6442/include/mach/debug-macro.S b/arch/arm/mach-s5p6442/include/mach/debug-macro.S
new file mode 100644
index 000000000000..1aae691e58ef
--- /dev/null
+++ b/arch/arm/mach-s5p6442/include/mach/debug-macro.S
@@ -0,0 +1,36 @@
+/* linux/arch/arm/mach-s5p6442/include/mach/debug-macro.S
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * Based on arch/arm/mach-s3c6400/include/mach/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.
+*/
+
+/* pull in the relevant register and map files. */
+
+#include <mach/map.h>
+#include <plat/regs-serial.h>
+
+	.macro addruart, rx
+		mrc	p15, 0, \rx, c1, c0
+		tst	\rx, #1
+		ldreq	\rx, = S3C_PA_UART
+		ldrne	\rx, = S3C_VA_UART
+#if CONFIG_DEBUG_S3C_UART != 0
+		add	\rx, \rx, #(0x400 * CONFIG_DEBUG_S3C_UART)
+#endif
+	.endm
+
+#define fifo_full fifo_full_s5pv210
+#define fifo_level fifo_level_s5pv210
+
+/* include the reset of the code which will do the work, we're only
+ * compiling for a single cpu processor type so the default of s3c2440
+ * will be fine with us.
+ */
+
+#include <plat/debug-macro.S>
diff --git a/arch/arm/mach-s5p6442/include/mach/entry-macro.S b/arch/arm/mach-s5p6442/include/mach/entry-macro.S
new file mode 100644
index 000000000000..6d574edbf1ae
--- /dev/null
+++ b/arch/arm/mach-s5p6442/include/mach/entry-macro.S
@@ -0,0 +1,48 @@
+/* linux/arch/arm/mach-s5p6442/include/mach/entry-macro.S
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * Low-level IRQ helper macros for the Samsung S5P6442
+ *
+ * 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/hardware/vic.h>
+#include <mach/map.h>
+#include <plat/irqs.h>
+
+	.macro	disable_fiq
+	.endm
+
+	.macro	get_irqnr_preamble, base, tmp
+	ldr	\base, =VA_VIC0
+	.endm
+
+	.macro	arch_ret_to_user, tmp1, tmp2
+	.endm
+
+	.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
+
+	@ check the vic0
+	mov	\irqnr, # S5P_IRQ_OFFSET + 31
+	ldr	\irqstat, [ \base, # VIC_IRQ_STATUS ]
+	teq	\irqstat, #0
+
+	@ otherwise try vic1
+	addeq	\tmp, \base, #(VA_VIC1 - VA_VIC0)
+	addeq	\irqnr, \irqnr, #32
+	ldreq	\irqstat, [ \tmp, # VIC_IRQ_STATUS ]
+	teqeq	\irqstat, #0
+
+	@ otherwise try vic2
+	addeq	\tmp, \base, #(VA_VIC2 - VA_VIC0)
+	addeq	\irqnr, \irqnr, #32
+	ldreq	\irqstat, [ \tmp, # VIC_IRQ_STATUS ]
+	teqeq	\irqstat, #0
+
+	clzne	\irqstat, \irqstat
+	subne	\irqnr, \irqnr, \irqstat
+	.endm
diff --git a/arch/arm/mach-s5p6442/include/mach/gpio.h b/arch/arm/mach-s5p6442/include/mach/gpio.h
new file mode 100644
index 000000000000..b8715df2fdab
--- /dev/null
+++ b/arch/arm/mach-s5p6442/include/mach/gpio.h
@@ -0,0 +1,123 @@
+/* linux/arch/arm/mach-s5p6442/include/mach/gpio.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * S5P6442 - GPIO lib support
+ *
+ * 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_GPIO_H
+#define __ASM_ARCH_GPIO_H __FILE__
+
+#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
+
+/* GPIO bank sizes */
+#define S5P6442_GPIO_A0_NR	(8)
+#define S5P6442_GPIO_A1_NR	(2)
+#define S5P6442_GPIO_B_NR	(4)
+#define S5P6442_GPIO_C0_NR	(5)
+#define S5P6442_GPIO_C1_NR	(5)
+#define S5P6442_GPIO_D0_NR	(2)
+#define S5P6442_GPIO_D1_NR	(6)
+#define S5P6442_GPIO_E0_NR	(8)
+#define S5P6442_GPIO_E1_NR	(5)
+#define S5P6442_GPIO_F0_NR	(8)
+#define S5P6442_GPIO_F1_NR	(8)
+#define S5P6442_GPIO_F2_NR	(8)
+#define S5P6442_GPIO_F3_NR	(6)
+#define S5P6442_GPIO_G0_NR	(7)
+#define S5P6442_GPIO_G1_NR	(7)
+#define S5P6442_GPIO_G2_NR	(7)
+#define S5P6442_GPIO_H0_NR	(8)
+#define S5P6442_GPIO_H1_NR	(8)
+#define S5P6442_GPIO_H2_NR	(8)
+#define S5P6442_GPIO_H3_NR	(8)
+#define S5P6442_GPIO_J0_NR	(8)
+#define S5P6442_GPIO_J1_NR	(6)
+#define S5P6442_GPIO_J2_NR	(8)
+#define S5P6442_GPIO_J3_NR	(8)
+#define S5P6442_GPIO_J4_NR	(5)
+
+/* GPIO bank numbers */
+
+/* CONFIG_S3C_GPIO_SPACE allows the user to select extra
+ * space for debugging purposes so that any accidental
+ * change from one gpio bank to another can be caught.
+*/
+
+#define S5P6442_GPIO_NEXT(__gpio) \
+	((__gpio##_START) + (__gpio##_NR) + CONFIG_S3C_GPIO_SPACE + 1)
+
+enum s5p_gpio_number {
+	S5P6442_GPIO_A0_START	= 0,
+	S5P6442_GPIO_A1_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_A0),
+	S5P6442_GPIO_B_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_A1),
+	S5P6442_GPIO_C0_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_B),
+	S5P6442_GPIO_C1_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_C0),
+	S5P6442_GPIO_D0_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_C1),
+	S5P6442_GPIO_D1_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_D0),
+	S5P6442_GPIO_E0_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_D1),
+	S5P6442_GPIO_E1_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_E0),
+	S5P6442_GPIO_F0_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_E1),
+	S5P6442_GPIO_F1_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_F0),
+	S5P6442_GPIO_F2_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_F1),
+	S5P6442_GPIO_F3_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_F2),
+	S5P6442_GPIO_G0_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_F3),
+	S5P6442_GPIO_G1_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_G0),
+	S5P6442_GPIO_G2_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_G1),
+	S5P6442_GPIO_H0_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_G2),
+	S5P6442_GPIO_H1_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_H0),
+	S5P6442_GPIO_H2_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_H1),
+	S5P6442_GPIO_H3_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_H2),
+	S5P6442_GPIO_J0_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_H3),
+	S5P6442_GPIO_J1_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_J0),
+	S5P6442_GPIO_J2_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_J1),
+	S5P6442_GPIO_J3_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_J2),
+	S5P6442_GPIO_J4_START	= S5P6442_GPIO_NEXT(S5P6442_GPIO_J3),
+};
+
+/* S5P6442 GPIO number definitions. */
+#define S5P6442_GPA0(_nr)	(S5P6442_GPIO_A0_START + (_nr))
+#define S5P6442_GPA1(_nr)	(S5P6442_GPIO_A1_START + (_nr))
+#define S5P6442_GPB(_nr)	(S5P6442_GPIO_B_START + (_nr))
+#define S5P6442_GPC0(_nr)	(S5P6442_GPIO_C0_START + (_nr))
+#define S5P6442_GPC1(_nr)	(S5P6442_GPIO_C1_START + (_nr))
+#define S5P6442_GPD0(_nr)	(S5P6442_GPIO_D0_START + (_nr))
+#define S5P6442_GPD1(_nr)	(S5P6442_GPIO_D1_START + (_nr))
+#define S5P6442_GPE0(_nr)	(S5P6442_GPIO_E0_START + (_nr))
+#define S5P6442_GPE1(_nr)	(S5P6442_GPIO_E1_START + (_nr))
+#define S5P6442_GPF0(_nr)	(S5P6442_GPIO_F0_START + (_nr))
+#define S5P6442_GPF1(_nr)	(S5P6442_GPIO_F1_START + (_nr))
+#define S5P6442_GPF2(_nr)	(S5P6442_GPIO_F2_START + (_nr))
+#define S5P6442_GPF3(_nr)	(S5P6442_GPIO_F3_START + (_nr))
+#define S5P6442_GPG0(_nr)	(S5P6442_GPIO_G0_START + (_nr))
+#define S5P6442_GPG1(_nr)	(S5P6442_GPIO_G1_START + (_nr))
+#define S5P6442_GPG2(_nr)	(S5P6442_GPIO_G2_START + (_nr))
+#define S5P6442_GPH0(_nr)	(S5P6442_GPIO_H0_START + (_nr))
+#define S5P6442_GPH1(_nr)	(S5P6442_GPIO_H1_START + (_nr))
+#define S5P6442_GPH2(_nr)	(S5P6442_GPIO_H2_START + (_nr))
+#define S5P6442_GPH3(_nr)	(S5P6442_GPIO_H3_START + (_nr))
+#define S5P6442_GPJ0(_nr)	(S5P6442_GPIO_J0_START + (_nr))
+#define S5P6442_GPJ1(_nr)	(S5P6442_GPIO_J1_START + (_nr))
+#define S5P6442_GPJ2(_nr)	(S5P6442_GPIO_J2_START + (_nr))
+#define S5P6442_GPJ3(_nr)	(S5P6442_GPIO_J3_START + (_nr))
+#define S5P6442_GPJ4(_nr)	(S5P6442_GPIO_J4_START + (_nr))
+
+/* the end of the S5P6442 specific gpios */
+#define S5P6442_GPIO_END	(S5P6442_GPJ4(S5P6442_GPIO_J4_NR) + 1)
+#define S3C_GPIO_END		S5P6442_GPIO_END
+
+/* define the number of gpios we need to the one after the GPJ4() range */
+#define ARCH_NR_GPIOS		(S5P6442_GPJ4(S5P6442_GPIO_J4_NR) +	\
+				 CONFIG_SAMSUNG_GPIO_EXTRA + 1)
+
+#include <asm-generic/gpio.h>
+
+#endif /* __ASM_ARCH_GPIO_H */
diff --git a/arch/arm/mach-s5p6442/include/mach/hardware.h b/arch/arm/mach-s5p6442/include/mach/hardware.h
new file mode 100644
index 000000000000..8cd7b67b49d4
--- /dev/null
+++ b/arch/arm/mach-s5p6442/include/mach/hardware.h
@@ -0,0 +1,18 @@
+/* linux/arch/arm/mach-s5p6442/include/mach/hardware.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * S5P6442 - Hardware support
+ *
+ * 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 __FILE__
+
+/* currently nothing here, placeholder */
+
+#endif /* __ASM_ARCH_HARDWARE_H */
diff --git a/arch/arm/mach-s5p6442/include/mach/map.h b/arch/arm/mach-s5p6442/include/mach/map.h
new file mode 100644
index 000000000000..685277d792fb
--- /dev/null
+++ b/arch/arm/mach-s5p6442/include/mach/map.h
@@ -0,0 +1,58 @@
+/* linux/arch/arm/mach-s5p6442/include/mach/map.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * S5P6442 - Memory map definitions
+ *
+ * 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_MAP_H
+#define __ASM_ARCH_MAP_H __FILE__
+
+#include <plat/map-base.h>
+#include <plat/map-s5p.h>
+
+#define S5P6442_PA_CHIPID	(0xE0000000)
+#define S5P_PA_CHIPID		S5P6442_PA_CHIPID
+
+#define S5P6442_PA_SYSCON	(0xE0100000)
+#define S5P_PA_SYSCON		S5P6442_PA_SYSCON
+
+#define S5P6442_PA_GPIO		(0xE0200000)
+#define S5P_PA_GPIO		S5P6442_PA_GPIO
+
+#define S5P6442_PA_VIC0		(0xE4000000)
+#define S5P_PA_VIC0		S5P6442_PA_VIC0
+
+#define S5P6442_PA_VIC1		(0xE4100000)
+#define S5P_PA_VIC1		S5P6442_PA_VIC1
+
+#define S5P6442_PA_VIC2		(0xE4200000)
+#define S5P_PA_VIC2		S5P6442_PA_VIC2
+
+#define S5P6442_PA_TIMER	(0xEA000000)
+#define S5P_PA_TIMER		S5P6442_PA_TIMER
+
+#define S5P6442_PA_SYSTIMER   	(0xEA100000)
+
+#define S5P6442_PA_UART		(0xEC000000)
+
+#define S5P_PA_UART0		(S5P6442_PA_UART + 0x0)
+#define S5P_PA_UART1		(S5P6442_PA_UART + 0x400)
+#define S5P_PA_UART2		(S5P6442_PA_UART + 0x800)
+#define S5P_SZ_UART		SZ_256
+
+#define S5P6442_PA_IIC0		(0xEC100000)
+
+#define S5P6442_PA_SDRAM	(0x20000000)
+#define S5P_PA_SDRAM		S5P6442_PA_SDRAM
+
+/* compatibiltiy defines. */
+#define S3C_PA_UART		S5P6442_PA_UART
+#define S3C_PA_IIC		S5P6442_PA_IIC0
+
+#endif /* __ASM_ARCH_MAP_H */
diff --git a/arch/arm/mach-s5p6442/include/mach/memory.h b/arch/arm/mach-s5p6442/include/mach/memory.h
new file mode 100644
index 000000000000..9ddd877ba2ea
--- /dev/null
+++ b/arch/arm/mach-s5p6442/include/mach/memory.h
@@ -0,0 +1,19 @@
+/* linux/arch/arm/mach-s5p6442/include/mach/memory.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * S5P6442 - Memory definitions
+ *
+ * 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_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#define PHYS_OFFSET		UL(0x20000000)
+#define CONSISTENT_DMA_SIZE	SZ_8M
+
+#endif /* __ASM_ARCH_MEMORY_H */
diff --git a/arch/arm/mach-s5p6442/include/mach/system.h b/arch/arm/mach-s5p6442/include/mach/system.h
new file mode 100644
index 000000000000..8bcd8ed0c3c3
--- /dev/null
+++ b/arch/arm/mach-s5p6442/include/mach/system.h
@@ -0,0 +1,26 @@
+/* linux/arch/arm/mach-s5p6442/include/mach/system.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * S5P6442 - system support 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.
+*/
+
+#ifndef __ASM_ARCH_SYSTEM_H
+#define __ASM_ARCH_SYSTEM_H __FILE__
+
+static void arch_idle(void)
+{
+	/* nothing here yet */
+}
+
+static void arch_reset(char mode, const char *cmd)
+{
+	/* nothing here yet */
+}
+
+#endif /* __ASM_ARCH_SYSTEM_H */
diff --git a/arch/arm/mach-s5p6442/include/mach/uncompress.h b/arch/arm/mach-s5p6442/include/mach/uncompress.h
new file mode 100644
index 000000000000..5ac7cbeeb987
--- /dev/null
+++ b/arch/arm/mach-s5p6442/include/mach/uncompress.h
@@ -0,0 +1,24 @@
+/* linux/arch/arm/mach-s5p6442/include/mach/uncompress.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * S5P6442 - uncompress code
+ *
+ * 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_UNCOMPRESS_H
+#define __ASM_ARCH_UNCOMPRESS_H
+
+#include <mach/map.h>
+#include <plat/uncompress.h>
+
+static void arch_detect_cpu(void)
+{
+	/* we do not need to do any cpu detection here at the moment. */
+}
+
+#endif /* __ASM_ARCH_UNCOMPRESS_H */