Split S3C generic and S3C24xx specific code

Signed-off-by: Alexey Galakhov <agalakhov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

10 files changed, 258 insertions, 180 deletions

diff --git a/arch/arm/mach-samsung/Makefile b/arch/arm/mach-samsung/Makefile
index 349ba9b0ce..bde707f724 100644
--- a/arch/arm/mach-samsung/Makefile
+++ b/arch/arm/mach-samsung/Makefile
@@ -1,3 +1,4 @@
 obj-y += s3c-timer.o generic.o
-obj-$(CONFIG_ARCH_S3C24xx) += gpio-s3c24x0.o s3c24xx-clocks.o
-obj-$(CONFIG_S3C_LOWLEVEL_INIT) += lowlevel-init.o
+obj-lowlevel-$(CONFIG_ARCH_S3C24xx) += lowlevel-s3c24x0.o
+obj-$(CONFIG_ARCH_S3C24xx) += gpio-s3c24x0.o s3c24xx-clocks.o mem-s3c24x0.o
+obj-$(CONFIG_S3C_LOWLEVEL_INIT) += $(obj-lowlevel-y)
diff --git a/arch/arm/mach-samsung/generic.c b/arch/arm/mach-samsung/generic.c
index 7706be2628..7095294d52 100644
--- a/arch/arm/mach-samsung/generic.c
+++ b/arch/arm/mach-samsung/generic.c
@@ -25,65 +25,9 @@
 #include <config.h>
 #include <common.h>
 #include <init.h>
-#include <clock.h>
 #include <io.h>
-#include <sizes.h>
 #include <mach/s3c-iomap.h>
 #include <mach/s3c-generic.h>
-#include <mach/s3c-busctl.h>
-#include <mach/s3c24xx-gpio.h>
-
-/**
- * Calculate the amount of connected and available memory
- * @return Memory size in bytes
- */
-uint32_t s3c24xx_get_memory_size(void)
-{
-	uint32_t reg, size;
-
-	/*
-	 * detect the current memory size
-	 */
-	reg = readl(S3C_BANKSIZE);
-
-	switch (reg & 0x7) {
-	case 0:
-		size = SZ_32M;
-		break;
-	case 1:
-		size = SZ_64M;
-		break;
-	case 2:
-		size = SZ_128M;
-		break;
-	case 4:
-		size = SZ_2M;
-		break;
-	case 5:
-		size = SZ_4M;
-		break;
-	case 6:
-		size = SZ_8M;
-		break;
-	default:
-		size = SZ_16M;
-		break;
-	}
-
-	/*
-	 * Is bank7 also configured for SDRAM usage?
-	 */
-	if ((readl(S3C_BANKCON7) & (0x3 << 15)) == (0x3 << 15))
-		size <<= 1;	/* also count this bank */
-
-	return size;
-}
-
-void s3c24xx_disable_second_sdram_bank(void)
-{
-	writel(readl(S3C_BANKCON7) & ~(0x3 << 15), S3C_BANKCON7);
-	writel(readl(S3C_MISCCR) | (1 << 18), S3C_MISCCR); /* disable its clock */
-}
 
 #define S3C_WTCON (S3C_WATCHDOG_BASE)
 #define S3C_WTDAT (S3C_WATCHDOG_BASE + 0x04)
@@ -105,60 +49,3 @@ void __noreturn reset_cpu(unsigned long addr)
 		;
 }
 EXPORT_SYMBOL(reset_cpu);
-
-/**
-
-@page dev_s3c24xx_arch Samsung's S3C24xx Platforms in barebox
-
-@section s3c24xx_boards Boards using S3C24xx Processors
-
-@li @subpage arch/arm/boards/a9m2410/a9m2410.c
-@li @subpage arch/arm/boards/a9m2440/a9m2440.c
-
-@section s3c24xx_arch Documentation for S3C24xx Architectures Files
-
-@li @subpage arch/arm/mach-s3c24xx/generic.c
-
-@section s3c24xx_mem_map SDRAM Memory Map
-
-SDRAM starts at address 0x3000.0000 up to the available amount of connected
-SDRAM memory. Physically this CPU can handle up to 256MiB (two areas with
-up to 128MiB each).
-
-@subsection s3c24xx_mem_generic_map Generic Map
-- 0x0000.0000 Start of the internal SRAM when booting from NAND flash memory or CS signal to a NOR flash memory.
-- 0x0800.0000 Start of I/O space.
-- 0x3000.0000 Start of SDRAM area.
-  - 0x3000.0100 Start of the TAG list area.
-  - 0x3000.8000 Start of the linux kernel (physical address).
-- 0x4000.0000 Start of internal SRAM, when booting from NOR flash memory
-- 0x4800.0000 Start of the internal I/O area
-
-@section s3c24xx_asm_arm include/asm-arm/arch-s3c24xx directory guidelines
-All S3C24xx common headers are located here.
-
-@note Do not add board specific header files/information here.
-*/
-
-/** @page dev_s3c24xx_mach Samsung's S3C24xx based platforms
-
-@par barebox Map
-
-The location of the @a barebox itself depends on the available amount of
-installed SDRAM memory:
-
-- 0x30fc.0000 Start of @a barebox when 16MiB SDRAM is available
-- 0x31fc.0000 Start of @a barebox when 32MiB SDRAM is available
-- 0x33fc.0000 Start of @a barebox when 64MiB SDRAM is available
-
-Adjust the @p CONFIG_TEXT_BASE/CONFIG_ARCH_TEXT_BASE symbol in accordance to
-the available memory.
-
-@note The RAM based filesystem and the stack resides always below the
-@a barebox start address.
-
-@li @subpage dev_s3c24xx_wd_handling
-@li @subpage dev_s3c24xx_pll_handling
-@li @subpage dev_s3c24xx_sdram_handling
-@li @subpage dev_s3c24xx_nandboot_handling
-*/
diff --git a/arch/arm/mach-samsung/include/mach/s3c-clocks.h b/arch/arm/mach-samsung/include/mach/s3c-clocks.h
index 44b2a6c8ee..b8894f8d24 100644
--- a/arch/arm/mach-samsung/include/mach/s3c-clocks.h
+++ b/arch/arm/mach-samsung/include/mach/s3c-clocks.h
@@ -1,5 +1,6 @@
 /*
- * Copyright (C) 2011 Juergen Beisert, Pengutronix
+ * See file CREDITS for list of people who contributed to this
+ * project.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
@@ -10,22 +11,19 @@
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
  */
 
 #ifndef __MACH_S3C_CLOCKS_H
-# define __MACH_S3C_CLOCKS_H
+#define __MACH_S3C_CLOCKS_H
 
 #ifdef CONFIG_ARCH_S3C24xx
-# define S3C_LOCKTIME (S3C_CLOCK_POWER_BASE)
-# define S3C_MPLLCON (S3C_CLOCK_POWER_BASE + 0x4)
-# define S3C_UPLLCON (S3C_CLOCK_POWER_BASE + 0x8)
-# define S3C_CLKCON (S3C_CLOCK_POWER_BASE + 0xc)
-# define S3C_CLKSLOW (S3C_CLOCK_POWER_BASE + 0x10)
-# define S3C_CLKDIVN (S3C_CLOCK_POWER_BASE + 0x14)
-
-# define S3C_MPLLCON_GET_MDIV(x) ((((x) >> 12) & 0xff) + 8)
-# define S3C_MPLLCON_GET_PDIV(x) ((((x) >> 4) & 0x3f) + 2)
-# define S3C_MPLLCON_GET_SDIV(x) ((x) & 0x3)
+# include <mach/s3c24xx-clocks.h>
 #endif
 
 #endif /* __MACH_S3C_CLOCKS_H */
diff --git a/arch/arm/mach-samsung/include/mach/s3c-generic.h b/arch/arm/mach-samsung/include/mach/s3c-generic.h
index 5d3808ef5b..9d40ef8dfe 100644
--- a/arch/arm/mach-samsung/include/mach/s3c-generic.h
+++ b/arch/arm/mach-samsung/include/mach/s3c-generic.h
@@ -33,6 +33,7 @@ uint32_t s3c_get_uclk(void);
 
 unsigned s3c_get_uart_clk(unsigned src);
 
+#ifdef CONFIG_ARCH_S3C24xx
 uint32_t s3c24xx_get_memory_size(void);
-
 void s3c24xx_disable_second_sdram_bank(void);
+#endif
diff --git a/arch/arm/mach-samsung/include/mach/s3c-iomap.h b/arch/arm/mach-samsung/include/mach/s3c-iomap.h
index 60d44e3165..87919cc8fb 100644
--- a/arch/arm/mach-samsung/include/mach/s3c-iomap.h
+++ b/arch/arm/mach-samsung/include/mach/s3c-iomap.h
@@ -1,5 +1,6 @@
 /*
- * Copyright (C) 2009 Juergen Beisert, Pengutronix
+ * See file CREDITS for list of people who contributed to this
+ * project.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
@@ -18,52 +19,6 @@
  *
  */
 
-/* S3C2410 device base addresses */
-#define S3C_MEMCTL_BASE			0x48000000
-#define S3C2410_USB_HOST_BASE		0x49000000
-#define S3C2410_INTERRUPT_BASE		0x4A000000
-#define S3C2410_DMA_BASE		0x4B000000
-#define S3C_CLOCK_POWER_BASE		0x4C000000
-#define S3C2410_LCD_BASE		0x4D000000
-#define S3C24X0_NAND_BASE		0x4E000000
-#define S3C_UART_BASE			0x50000000
-#define S3C_TIMER_BASE			0x51000000
-#define S3C2410_USB_DEVICE_BASE		0x52000140
-#define S3C_WATCHDOG_BASE		0x53000000
-#define S3C2410_I2C_BASE		0x54000000
-#define S3C2410_I2S_BASE		0x55000000
-#define S3C_GPIO_BASE			0x56000000
-#define S3C2410_RTC_BASE		0x57000000
-#define S3C2410_ADC_BASE		0x58000000
-#define S3C2410_SPI_BASE		0x59000000
-#define S3C2410_SDI_BASE		0x5A000000
-
-/* external IO space */
-#define S3C_CS0_BASE 0x00000000
-#define S3C_CS1_BASE 0x08000000
-#define S3C_CS2_BASE 0x10000000
-#define S3C_CS3_BASE 0x18000000
-#define S3C_CS4_BASE 0x20000000
-#define S3C_CS5_BASE 0x28000000
-#define S3C_CS6_BASE 0x30000000
-
-#define S3C_SDRAM_BASE S3C_CS6_BASE
-#define S3C_SDRAM_END (S3C_SDRAM_BASE + 0x10000000)
-
-/*
- * if we are booting from NAND, its internal SRAM occures at
- * a different address than without this feature
- */
-#ifdef CONFIG_S3C_NAND_BOOT
-# define NFC_RAM_AREA 0x00000000
-#else
-# define NFC_RAM_AREA 0x40000000
+#ifdef CONFIG_ARCH_S3C24xx
+# include <mach/s3c24xx-iomap.h>
 #endif
-#define NFC_RAM_SIZE 4096
-
-#define S3C_UART1_BASE (S3C_UART_BASE)
-#define S3C_UART1_SIZE 0x4000
-#define S3C_UART2_BASE (S3C_UART_BASE + 0x4000)
-#define S3C_UART2_SIZE 0x4000
-#define S3C_UART3_BASE (S3C_UART_BASE + 0x8000)
-#define S3C_UART3_SIZE 0x4000
diff --git a/arch/arm/mach-samsung/include/mach/s3c24xx-clocks.h b/arch/arm/mach-samsung/include/mach/s3c24xx-clocks.h
new file mode 100644
index 0000000000..839dfe3c99
--- /dev/null
+++ b/arch/arm/mach-samsung/include/mach/s3c24xx-clocks.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2011 Juergen Beisert, Pengutronix
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+# define S3C_LOCKTIME (S3C_CLOCK_POWER_BASE)
+# define S3C_MPLLCON (S3C_CLOCK_POWER_BASE + 0x4)
+# define S3C_UPLLCON (S3C_CLOCK_POWER_BASE + 0x8)
+# define S3C_CLKCON (S3C_CLOCK_POWER_BASE + 0xc)
+# define S3C_CLKSLOW (S3C_CLOCK_POWER_BASE + 0x10)
+# define S3C_CLKDIVN (S3C_CLOCK_POWER_BASE + 0x14)
+
+# define S3C_MPLLCON_GET_MDIV(x) ((((x) >> 12) & 0xff) + 8)
+# define S3C_MPLLCON_GET_PDIV(x) ((((x) >> 4) & 0x3f) + 2)
+# define S3C_MPLLCON_GET_SDIV(x) ((x) & 0x3)
diff --git a/arch/arm/mach-samsung/include/mach/s3c24xx-gpio.h b/arch/arm/mach-samsung/include/mach/s3c24xx-gpio.h
index c83597410c..ffb57fbd1f 100644
--- a/arch/arm/mach-samsung/include/mach/s3c24xx-gpio.h
+++ b/arch/arm/mach-samsung/include/mach/s3c24xx-gpio.h
@@ -12,8 +12,8 @@
  * GNU General Public License for more details.
  */
 
-#ifndef __MACH_S3C24XX_GPIO_H
-# define __MACH_S3C24XX_GPIO_H
+#ifndef __MACH_GPIO_S3C24X0_H
+# define __MACH_GPIO_S3C24X0_H
 
 #define S3C_GPACON (S3C_GPIO_BASE)
 #define S3C_GPADAT (S3C_GPIO_BASE + 0x04)
@@ -74,4 +74,4 @@
 # define S3C_DSC1 (S3C_GPIO_BASE + 0xc8)
 #endif
 
-#endif /* __MACH_S3C24XX_GPIO_H */
+#endif /* __MACH_GPIO_S3C24X0_H */
diff --git a/arch/arm/mach-samsung/include/mach/s3c24xx-iomap.h b/arch/arm/mach-samsung/include/mach/s3c24xx-iomap.h
new file mode 100644
index 0000000000..60d44e3165
--- /dev/null
+++ b/arch/arm/mach-samsung/include/mach/s3c24xx-iomap.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2009 Juergen Beisert, Pengutronix
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+/* S3C2410 device base addresses */
+#define S3C_MEMCTL_BASE			0x48000000
+#define S3C2410_USB_HOST_BASE		0x49000000
+#define S3C2410_INTERRUPT_BASE		0x4A000000
+#define S3C2410_DMA_BASE		0x4B000000
+#define S3C_CLOCK_POWER_BASE		0x4C000000
+#define S3C2410_LCD_BASE		0x4D000000
+#define S3C24X0_NAND_BASE		0x4E000000
+#define S3C_UART_BASE			0x50000000
+#define S3C_TIMER_BASE			0x51000000
+#define S3C2410_USB_DEVICE_BASE		0x52000140
+#define S3C_WATCHDOG_BASE		0x53000000
+#define S3C2410_I2C_BASE		0x54000000
+#define S3C2410_I2S_BASE		0x55000000
+#define S3C_GPIO_BASE			0x56000000
+#define S3C2410_RTC_BASE		0x57000000
+#define S3C2410_ADC_BASE		0x58000000
+#define S3C2410_SPI_BASE		0x59000000
+#define S3C2410_SDI_BASE		0x5A000000
+
+/* external IO space */
+#define S3C_CS0_BASE 0x00000000
+#define S3C_CS1_BASE 0x08000000
+#define S3C_CS2_BASE 0x10000000
+#define S3C_CS3_BASE 0x18000000
+#define S3C_CS4_BASE 0x20000000
+#define S3C_CS5_BASE 0x28000000
+#define S3C_CS6_BASE 0x30000000
+
+#define S3C_SDRAM_BASE S3C_CS6_BASE
+#define S3C_SDRAM_END (S3C_SDRAM_BASE + 0x10000000)
+
+/*
+ * if we are booting from NAND, its internal SRAM occures at
+ * a different address than without this feature
+ */
+#ifdef CONFIG_S3C_NAND_BOOT
+# define NFC_RAM_AREA 0x00000000
+#else
+# define NFC_RAM_AREA 0x40000000
+#endif
+#define NFC_RAM_SIZE 4096
+
+#define S3C_UART1_BASE (S3C_UART_BASE)
+#define S3C_UART1_SIZE 0x4000
+#define S3C_UART2_BASE (S3C_UART_BASE + 0x4000)
+#define S3C_UART2_SIZE 0x4000
+#define S3C_UART3_BASE (S3C_UART_BASE + 0x8000)
+#define S3C_UART3_SIZE 0x4000
diff --git a/arch/arm/mach-samsung/lowlevel-init.S b/arch/arm/mach-samsung/lowlevel-s3c24x0.S
index e9471a5a17..e9471a5a17 100644
--- a/arch/arm/mach-samsung/lowlevel-init.S
+++ b/arch/arm/mach-samsung/lowlevel-s3c24x0.S
diff --git a/arch/arm/mach-samsung/mem-s3c24x0.c b/arch/arm/mach-samsung/mem-s3c24x0.c
new file mode 100644
index 0000000000..6fae72b5a1
--- /dev/null
+++ b/arch/arm/mach-samsung/mem-s3c24x0.c
@@ -0,0 +1,143 @@
+/*
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+/**
+ * @file
+ * @brief Basic clock, sdram and timer handling for S3C24xx CPUs
+ */
+
+#include <config.h>
+#include <common.h>
+#include <init.h>
+#include <clock.h>
+#include <io.h>
+#include <sizes.h>
+#include <mach/s3c-iomap.h>
+#include <mach/s3c-generic.h>
+#include <mach/s3c-busctl.h>
+#include <mach/s3c24xx-gpio.h>
+
+/**
+ * Calculate the amount of connected and available memory
+ * @return Memory size in bytes
+ */
+uint32_t s3c24xx_get_memory_size(void)
+{
+	uint32_t reg, size;
+
+	/*
+	 * detect the current memory size
+	 */
+	reg = readl(S3C_BANKSIZE);
+
+	switch (reg & 0x7) {
+	case 0:
+		size = SZ_32M;
+		break;
+	case 1:
+		size = SZ_64M;
+		break;
+	case 2:
+		size = SZ_128M;
+		break;
+	case 4:
+		size = SZ_2M;
+		break;
+	case 5:
+		size = SZ_4M;
+		break;
+	case 6:
+		size = SZ_8M;
+		break;
+	default:
+		size = SZ_16M;
+		break;
+	}
+
+	/*
+	 * Is bank7 also configured for SDRAM usage?
+	 */
+	if ((readl(S3C_BANKCON7) & (0x3 << 15)) == (0x3 << 15))
+		size <<= 1;	/* also count this bank */
+
+	return size;
+}
+
+void s3c24xx_disable_second_sdram_bank(void)
+{
+	writel(readl(S3C_BANKCON7) & ~(0x3 << 15), S3C_BANKCON7);
+	writel(readl(S3C_MISCCR) | (1 << 18), S3C_MISCCR); /* disable its clock */
+}
+
+/**
+
+@page dev_s3c24xx_arch Samsung's S3C24xx Platforms in barebox
+
+@section s3c24xx_boards Boards using S3C24xx Processors
+
+@li @subpage arch/arm/boards/a9m2410/a9m2410.c
+@li @subpage arch/arm/boards/a9m2440/a9m2440.c
+
+@section s3c24xx_arch Documentation for S3C24xx Architectures Files
+
+@li @subpage arch/arm/mach-s3c24xx/generic.c
+
+@section s3c24xx_mem_map SDRAM Memory Map
+
+SDRAM starts at address 0x3000.0000 up to the available amount of connected
+SDRAM memory. Physically this CPU can handle up to 256MiB (two areas with
+up to 128MiB each).
+
+@subsection s3c24xx_mem_generic_map Generic Map
+- 0x0000.0000 Start of the internal SRAM when booting from NAND flash memory or CS signal to a NOR flash memory.
+- 0x0800.0000 Start of I/O space.
+- 0x3000.0000 Start of SDRAM area.
+  - 0x3000.0100 Start of the TAG list area.
+  - 0x3000.8000 Start of the linux kernel (physical address).
+- 0x4000.0000 Start of internal SRAM, when booting from NOR flash memory
+- 0x4800.0000 Start of the internal I/O area
+
+@section s3c24xx_asm_arm include/asm-arm/arch-s3c24xx directory guidelines
+All S3C24xx common headers are located here.
+
+@note Do not add board specific header files/information here.
+*/
+
+/** @page dev_s3c24xx_mach Samsung's S3C24xx based platforms
+
+@par barebox Map
+
+The location of the @a barebox itself depends on the available amount of
+installed SDRAM memory:
+
+- 0x30fc.0000 Start of @a barebox when 16MiB SDRAM is available
+- 0x31fc.0000 Start of @a barebox when 32MiB SDRAM is available
+- 0x33fc.0000 Start of @a barebox when 64MiB SDRAM is available
+
+Adjust the @p CONFIG_TEXT_BASE/CONFIG_ARCH_TEXT_BASE symbol in accordance to
+the available memory.
+
+@note The RAM based filesystem and the stack resides always below the
+@a barebox start address.
+
+@li @subpage dev_s3c24xx_wd_handling
+@li @subpage dev_s3c24xx_pll_handling
+@li @subpage dev_s3c24xx_sdram_handling
+@li @subpage dev_s3c24xx_nandboot_handling
+*/