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authorByungho Min <bhminjames@gmail.com>2009-06-23 21:40:15 +0900
committerBen Dooks <ben-linux@fluff.org>2009-08-16 23:24:58 +0100
commit8acd1ade2ede18408303c968e1449220c427a182 (patch)
tree598b77da0749b07868f2de84f210511707fe9f93 /arch/arm/mach-s5pc100
parent433a915fc6456ee3a4b740fe4d92caa78164fdce (diff)
ARM: S5PC100: CPU initialization
Signed-off-by: Byungho Min <bhmin@samsung.com> [ben-linux@fluff.org: subject fixup] Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/mach-s5pc100')
-rw-r--r--arch/arm/mach-s5pc100/cpu.c97
-rw-r--r--arch/arm/mach-s5pc100/include/mach/debug-macro.S38
-rw-r--r--arch/arm/mach-s5pc100/include/mach/entry-macro.S50
-rw-r--r--arch/arm/mach-s5pc100/include/mach/hardware.h14
-rw-r--r--arch/arm/mach-s5pc100/include/mach/system.h24
-rw-r--r--arch/arm/mach-s5pc100/include/mach/uncompress.h28
6 files changed, 251 insertions, 0 deletions
diff --git a/arch/arm/mach-s5pc100/cpu.c b/arch/arm/mach-s5pc100/cpu.c
new file mode 100644
index 00000000000..0e718890da3
--- /dev/null
+++ b/arch/arm/mach-s5pc100/cpu.c
@@ -0,0 +1,97 @@
+/* linux/arch/arm/mach-s5pc100/cpu.c
+ *
+ * Copyright 2009 Samsung Electronics Co.
+ * Byungho Min <bhmin@samsung.com>
+ *
+ * Based on mach-s3c6410/cpu.c
+ *
+ * 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/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/sysdev.h>
+#include <linux/serial_core.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <mach/hardware.h>
+#include <mach/map.h>
+#include <asm/irq.h>
+
+#include <plat/cpu-freq.h>
+#include <plat/regs-serial.h>
+
+#include <plat/cpu.h>
+#include <plat/devs.h>
+#include <plat/clock.h>
+#include <plat/sdhci.h>
+#include <plat/iic-core.h>
+#include <plat/s5pc100.h>
+
+/* Initial IO mappings */
+
+static struct map_desc s5pc100_iodesc[] __initdata = {
+};
+
+/* s5pc100_map_io
+ *
+ * register the standard cpu IO areas
+*/
+
+void __init s5pc100_map_io(void)
+{
+ iotable_init(s5pc100_iodesc, ARRAY_SIZE(s5pc100_iodesc));
+
+ /* initialise device information early */
+}
+
+void __init s5pc100_init_clocks(int xtal)
+{
+ printk(KERN_DEBUG "%s: initialising clocks\n", __func__);
+ s3c24xx_register_baseclocks(xtal);
+ s5pc1xx_register_clocks();
+ s5pc100_register_clocks();
+ s5pc100_setup_clocks();
+}
+
+void __init s5pc100_init_irq(void)
+{
+ u32 vic_valid[] = {~0, ~0, ~0};
+
+ /* VIC0, VIC1, and VIC2 are fully populated. */
+ s5pc1xx_init_irq(vic_valid, ARRAY_SIZE(vic_valid));
+}
+
+struct sysdev_class s5pc100_sysclass = {
+ .name = "s5pc100-core",
+};
+
+static struct sys_device s5pc100_sysdev = {
+ .cls = &s5pc100_sysclass,
+};
+
+static int __init s5pc100_core_init(void)
+{
+ return sysdev_class_register(&s5pc100_sysclass);
+}
+
+core_initcall(s5pc100_core_init);
+
+int __init s5pc100_init(void)
+{
+ printk(KERN_DEBUG "S5PC100: Initialising architecture\n");
+
+ return sysdev_register(&s5pc100_sysdev);
+}
diff --git a/arch/arm/mach-s5pc100/include/mach/debug-macro.S b/arch/arm/mach-s5pc100/include/mach/debug-macro.S
new file mode 100644
index 00000000000..9d142ccf654
--- /dev/null
+++ b/arch/arm/mach-s5pc100/include/mach/debug-macro.S
@@ -0,0 +1,38 @@
+/* arch/arm/mach-s5pc100/include/mach/debug-macro.S
+ *
+ * Copyright 2009 Samsung Electronics Co.
+ * Byungho Min <bhmin@samsung.com>
+ *
+ *
+ * Based on 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>
+
+ /* note, for the boot process to work we have to keep the UART
+ * virtual address aligned to an 1MiB boundary for the L1
+ * mapping the head code makes. We keep the UART virtual address
+ * aligned and add in the offset when we load the value here.
+ */
+
+ .macro addruart, rx
+ mrc p15, 0, \rx, c1, c0
+ tst \rx, #1
+ ldreq \rx, = S3C_PA_UART
+ ldrne \rx, = (S3C_VA_UART + S3C_PA_UART & 0xfffff)
+ add \rx, \rx, #(0x400 * CONFIG_DEBUG_S3C_UART)
+ .endm
+
+/* 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-s5pc100/include/mach/entry-macro.S b/arch/arm/mach-s5pc100/include/mach/entry-macro.S
new file mode 100644
index 00000000000..67131939e62
--- /dev/null
+++ b/arch/arm/mach-s5pc100/include/mach/entry-macro.S
@@ -0,0 +1,50 @@
+/* arch/arm/mach-s5pc100/include/mach/entry-macro.S
+ *
+ * Copyright 2009 Samsung Electronics Co.
+ * Byungho Min <bhmin@samsung.com>
+ *
+ * Based on mach-s3c6400/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for the Samsung S5PC1XX series
+ *
+ * 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/hardware/vic.h>
+#include <mach/map.h>
+#include <plat/irqs.h>
+
+ .macro disable_fiq
+ .endm
+
+ .macro get_irqnr_preamble, base, tmp
+ ldr \base, =S3C_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, # S3C_IRQ_OFFSET + 31
+ ldr \irqstat, [ \base, # VIC_IRQ_STATUS ]
+ teq \irqstat, #0
+
+ @ otherwise try vic1
+ addeq \tmp, \base, #(S3C_VA_VIC1 - S3C_VA_VIC0)
+ addeq \irqnr, \irqnr, #32
+ ldreq \irqstat, [ \tmp, # VIC_IRQ_STATUS ]
+ teqeq \irqstat, #0
+
+ @ otherwise try vic2
+ addeq \tmp, \base, #(S3C_VA_VIC2 - S3C_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-s5pc100/include/mach/hardware.h b/arch/arm/mach-s5pc100/include/mach/hardware.h
new file mode 100644
index 00000000000..38ce8206a1a
--- /dev/null
+++ b/arch/arm/mach-s5pc100/include/mach/hardware.h
@@ -0,0 +1,14 @@
+/* linux/arch/arm/mach-s5pc100/include/mach/hardware.h
+ *
+ * Copyright 2009 Samsung Electronics Co.
+ * Byungho Min <bhmin@samsung.com>
+ *
+ * S3C6400 - Hardware support
+ */
+
+#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-s5pc100/include/mach/system.h b/arch/arm/mach-s5pc100/include/mach/system.h
new file mode 100644
index 00000000000..e3901437547
--- /dev/null
+++ b/arch/arm/mach-s5pc100/include/mach/system.h
@@ -0,0 +1,24 @@
+/* linux/arch/arm/mach-s5pc100/include/mach/system.h
+ *
+ * Copyright 2009 Samsung Electronics Co.
+ * Byungho Min <bhmin@samsung.com>
+ *
+ * S5PC1XX - system implementation
+ *
+ * Based on mach-s3c6400/include/mach/system.h
+ */
+
+#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_IRQ_H */
diff --git a/arch/arm/mach-s5pc100/include/mach/uncompress.h b/arch/arm/mach-s5pc100/include/mach/uncompress.h
new file mode 100644
index 00000000000..01ccf535e76
--- /dev/null
+++ b/arch/arm/mach-s5pc100/include/mach/uncompress.h
@@ -0,0 +1,28 @@
+/* arch/arm/mach-s5pc100/include/mach/uncompress.h
+ *
+ * Copyright 2009 Samsung Electronics Co.
+ * Byungho Min <bhmin@samsung.com>
+ *
+ * S5PC100 - uncompress code
+ *
+ * Based on mach-s3c6400/include/mach/uncompress.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_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. */
+ fifo_mask = S3C2440_UFSTAT_TXMASK;
+ fifo_max = 63 << S3C2440_UFSTAT_TXSHIFT;
+}
+
+#endif /* __ASM_ARCH_UNCOMPRESS_H */