]> git.karo-electronics.de Git - karo-tx-linux.git/commitdiff
ARM: S5PC100: CPU initialization
authorByungho Min <bhminjames@gmail.com>
Tue, 23 Jun 2009 12:40:15 +0000 (21:40 +0900)
committerBen Dooks <ben-linux@fluff.org>
Sun, 16 Aug 2009 22:24:58 +0000 (23:24 +0100)
Signed-off-by: Byungho Min <bhmin@samsung.com>
[ben-linux@fluff.org: subject fixup]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
arch/arm/mach-s5pc100/cpu.c [new file with mode: 0644]
arch/arm/mach-s5pc100/include/mach/debug-macro.S [new file with mode: 0644]
arch/arm/mach-s5pc100/include/mach/entry-macro.S [new file with mode: 0644]
arch/arm/mach-s5pc100/include/mach/hardware.h [new file with mode: 0644]
arch/arm/mach-s5pc100/include/mach/system.h [new file with mode: 0644]
arch/arm/mach-s5pc100/include/mach/uncompress.h [new file with mode: 0644]
arch/arm/plat-s5pc1xx/cpu.c [new file with mode: 0644]
arch/arm/plat-s5pc1xx/include/plat/s5pc100.h [new file with mode: 0644]
arch/arm/plat-s5pc1xx/s5pc100-init.c [new file with mode: 0644]

diff --git a/arch/arm/mach-s5pc100/cpu.c b/arch/arm/mach-s5pc100/cpu.c
new file mode 100644 (file)
index 0000000..0e71889
--- /dev/null
@@ -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 (file)
index 0000000..9d142cc
--- /dev/null
@@ -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 (file)
index 0000000..6713193
--- /dev/null
@@ -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 (file)
index 0000000..38ce820
--- /dev/null
@@ -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 (file)
index 0000000..e390143
--- /dev/null
@@ -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 (file)
index 0000000..01ccf53
--- /dev/null
@@ -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 */
diff --git a/arch/arm/plat-s5pc1xx/cpu.c b/arch/arm/plat-s5pc1xx/cpu.c
new file mode 100644 (file)
index 0000000..715a733
--- /dev/null
@@ -0,0 +1,112 @@
+/* linux/arch/arm/plat-s5pc1xx/cpu.c
+ *
+ * Copyright 2009 Samsung Electronics Co.
+ *     Byungho Min <bhmin@samsung.com>
+ *
+ * S5PC1XX CPU Support
+ *
+ * Based on plat-s3c64xx/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/init.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/serial_core.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+#include <mach/map.h>
+
+#include <asm/mach/map.h>
+
+#include <plat/regs-serial.h>
+
+#include <plat/cpu.h>
+#include <plat/devs.h>
+#include <plat/clock.h>
+
+#include <plat/s5pc100.h>
+
+/* table of supported CPUs */
+
+static const char name_s5pc100[] = "S5PC100";
+
+static struct cpu_table cpu_ids[] __initdata = {
+       {
+               .idcode         = 0x43100000,
+               .idmask         = 0xfffff000,
+               .map_io         = s5pc100_map_io,
+               .init_clocks    = s5pc100_init_clocks,
+               .init_uarts     = s5pc100_init_uarts,
+               .init           = s5pc100_init,
+               .name           = name_s5pc100,
+       },
+};
+/* minimal IO mapping */
+
+/* see notes on uart map in arch/arm/mach-s5pc100/include/mach/debug-macro.S */
+#define UART_OFFS (S3C_PA_UART & 0xffff)
+
+static struct map_desc s5pc1xx_iodesc[] __initdata = {
+       {
+               .virtual        = (unsigned long)S5PC1XX_VA_CHIPID,
+               .pfn            = __phys_to_pfn(S5PC1XX_PA_CHIPID),
+               .length         = SZ_16,
+               .type           = MT_DEVICE,
+       }, {
+               .virtual        = (unsigned long)S5PC1XX_VA_CLK,
+               .pfn            = __phys_to_pfn(S5PC1XX_PA_CLK),
+               .length         = SZ_4K,
+               .type           = MT_DEVICE,
+       }, {
+               .virtual        = (unsigned long)S5PC1XX_VA_PWR,
+               .pfn            = __phys_to_pfn(S5PC1XX_PA_PWR),
+               .length         = SZ_4K,
+               .type           = MT_DEVICE,
+       }, {
+               .virtual        = (unsigned long)(S5PC1XX_VA_UART),
+               .pfn            = __phys_to_pfn(S5PC1XX_PA_UART),
+               .length         = SZ_4K,
+               .type           = MT_DEVICE,
+       }, {
+               .virtual        = (unsigned long)S5PC1XX_VA_VIC(0),
+               .pfn            = __phys_to_pfn(S5PC1XX_PA_VIC(0)),
+               .length         = SZ_4K,
+               .type           = MT_DEVICE,
+       }, {
+               .virtual        = (unsigned long)S5PC1XX_VA_VIC(1),
+               .pfn            = __phys_to_pfn(S5PC1XX_PA_VIC(1)),
+               .length         = SZ_4K,
+               .type           = MT_DEVICE,
+       }, {
+               .virtual        = (unsigned long)S5PC1XX_VA_VIC(2),
+               .pfn            = __phys_to_pfn(S5PC1XX_PA_VIC(2)),
+               .length         = SZ_4K,
+               .type           = MT_DEVICE,
+       }, {
+               .virtual        = (unsigned long)S5PC1XX_VA_TIMER,
+               .pfn            = __phys_to_pfn(S5PC1XX_PA_TIMER),
+               .length         = SZ_256,
+               .type           = MT_DEVICE,
+       },
+};
+
+/* read cpu identification code */
+
+void __init s5pc1xx_init_io(struct map_desc *mach_desc, int size)
+{
+       unsigned long idcode;
+
+       /* initialise the io descriptors we need for initialisation */
+       iotable_init(s5pc1xx_iodesc, ARRAY_SIZE(s5pc1xx_iodesc));
+       iotable_init(mach_desc, size);
+
+       idcode = __raw_readl(S5PC1XX_VA_CHIPID);
+       s3c_init_cpu(idcode, cpu_ids, ARRAY_SIZE(cpu_ids));
+}
diff --git a/arch/arm/plat-s5pc1xx/include/plat/s5pc100.h b/arch/arm/plat-s5pc1xx/include/plat/s5pc100.h
new file mode 100644 (file)
index 0000000..45e2751
--- /dev/null
@@ -0,0 +1,65 @@
+/* arch/arm/plat-s5pc1xx/include/plat/s5pc100.h
+ *
+ * Copyright 2009 Samsung Electronics Co.
+ *     Byungho Min <bhmin@samsung.com>
+ *
+ * Header file for s5pc100 cpu support
+ *
+ * Based on plat-s3c64xx/include/plat/s3c6400.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.
+*/
+
+/* Common init code for S5PC100 related SoCs */
+extern  int s5pc100_init(void);
+extern void s5pc100_map_io(void);
+extern void s5pc100_init_clocks(int xtal);
+extern  int s5pc100_register_baseclocks(unsigned long xtal);
+extern void s5pc100_init_irq(void);
+extern void s5pc100_init_io(struct map_desc *mach_desc, int size);
+extern void s5pc100_common_init_uarts(struct s3c2410_uartcfg *cfg, int no);
+extern void s5pc100_register_clocks(void);
+extern void s5pc100_setup_clocks(void);
+extern struct sysdev_class s5pc100_sysclass;
+
+#define s5pc100_init_uarts s5pc100_common_init_uarts
+
+/* Some day, belows will be moved to plat-s5pc/include/plat/cpu.h */
+extern void s5pc1xx_init_irq(u32 *vic_valid, int num);
+extern void s5pc1xx_init_io(struct map_desc *mach_desc, int size);
+
+/* Some day, belows will be moved to plat-s5pc/include/plat/clock.h */
+extern struct clk clk_hpll;
+extern struct clk clk_hd0;
+extern struct clk clk_pd0;
+extern struct clk clk_54m;
+extern struct clk clk_dout_mpll2;
+extern void s5pc1xx_register_clocks(void);
+extern int s5pc1xx_sclk0_ctrl(struct clk *clk, int enable);
+extern int s5pc1xx_sclk1_ctrl(struct clk *clk, int enable);
+
+/* Some day, belows will be moved to plat-s5pc/include/plat/devs.h */
+extern struct s3c24xx_uart_resources s5pc1xx_uart_resources[];
+extern struct platform_device s3c_device_g2d;
+extern struct platform_device s3c_device_g3d;
+extern struct platform_device s3c_device_vpp;
+extern struct platform_device s3c_device_tvenc;
+extern struct platform_device s3c_device_tvscaler;
+extern struct platform_device s3c_device_rotator;
+extern struct platform_device s3c_device_jpeg;
+extern struct platform_device s3c_device_onenand;
+extern struct platform_device s3c_device_usb_otghcd;
+extern struct platform_device s3c_device_keypad;
+extern struct platform_device s3c_device_ts;
+extern struct platform_device s3c_device_g3d;
+extern struct platform_device s3c_device_smc911x;
+extern struct platform_device s3c_device_fimc0;
+extern struct platform_device s3c_device_fimc1;
+extern struct platform_device s3c_device_mfc;
+extern struct platform_device s3c_device_ac97;
+extern struct platform_device s3c_device_fimc0;
+extern struct platform_device s3c_device_fimc1;
+extern struct platform_device s3c_device_fimc2;
+
diff --git a/arch/arm/plat-s5pc1xx/s5pc100-init.c b/arch/arm/plat-s5pc1xx/s5pc100-init.c
new file mode 100644 (file)
index 0000000..c587108
--- /dev/null
@@ -0,0 +1,27 @@
+/* linux/arch/arm/plat-s5pc1xx/s5pc100-init.c
+ *
+ * Copyright 2009 Samsung Electronics Co.
+ *      Byungho Min <bhmin@samsung.com>
+ *
+ * S5PC100 - CPU initialisation (common with other S5PC1XX chips)
+ *
+ * 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/init.h>
+
+#include <plat/cpu.h>
+#include <plat/devs.h>
+#include <plat/s5pc100.h>
+
+/* uart registration process */
+
+void __init s5pc100_common_init_uarts(struct s3c2410_uartcfg *cfg, int no)
+{
+       /* The driver name is s3c6400-uart to reuse s3c6400_serial_drv  */
+       s3c24xx_init_uartdevs("s3c6400-uart", s5pc1xx_uart_resources, cfg, no);
+}