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authorByungho Min <bhminjames@gmail.com>2009-06-23 08:40:15 -0400
committerBen Dooks <ben-linux@fluff.org>2009-08-16 18:24:58 -0400
commit8acd1ade2ede18408303c968e1449220c427a182 (patch)
tree598b77da0749b07868f2de84f210511707fe9f93 /arch
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')
-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
-rw-r--r--arch/arm/plat-s5pc1xx/cpu.c112
-rw-r--r--arch/arm/plat-s5pc1xx/include/plat/s5pc100.h65
-rw-r--r--arch/arm/plat-s5pc1xx/s5pc100-init.c27
9 files changed, 455 insertions, 0 deletions
diff --git a/arch/arm/mach-s5pc100/cpu.c b/arch/arm/mach-s5pc100/cpu.c
new file mode 100644
index 000000000000..0e718890da32
--- /dev/null
+++ b/arch/arm/mach-s5pc100/cpu.c
@@ -0,0 +1,97 @@
1/* linux/arch/arm/mach-s5pc100/cpu.c
2 *
3 * Copyright 2009 Samsung Electronics Co.
4 * Byungho Min <bhmin@samsung.com>
5 *
6 * Based on mach-s3c6410/cpu.c
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11*/
12
13#include <linux/kernel.h>
14#include <linux/types.h>
15#include <linux/interrupt.h>
16#include <linux/list.h>
17#include <linux/timer.h>
18#include <linux/init.h>
19#include <linux/clk.h>
20#include <linux/io.h>
21#include <linux/sysdev.h>
22#include <linux/serial_core.h>
23#include <linux/platform_device.h>
24
25#include <asm/mach/arch.h>
26#include <asm/mach/map.h>
27#include <asm/mach/irq.h>
28
29#include <mach/hardware.h>
30#include <mach/map.h>
31#include <asm/irq.h>
32
33#include <plat/cpu-freq.h>
34#include <plat/regs-serial.h>
35
36#include <plat/cpu.h>
37#include <plat/devs.h>
38#include <plat/clock.h>
39#include <plat/sdhci.h>
40#include <plat/iic-core.h>
41#include <plat/s5pc100.h>
42
43/* Initial IO mappings */
44
45static struct map_desc s5pc100_iodesc[] __initdata = {
46};
47
48/* s5pc100_map_io
49 *
50 * register the standard cpu IO areas
51*/
52
53void __init s5pc100_map_io(void)
54{
55 iotable_init(s5pc100_iodesc, ARRAY_SIZE(s5pc100_iodesc));
56
57 /* initialise device information early */
58}
59
60void __init s5pc100_init_clocks(int xtal)
61{
62 printk(KERN_DEBUG "%s: initialising clocks\n", __func__);
63 s3c24xx_register_baseclocks(xtal);
64 s5pc1xx_register_clocks();
65 s5pc100_register_clocks();
66 s5pc100_setup_clocks();
67}
68
69void __init s5pc100_init_irq(void)
70{
71 u32 vic_valid[] = {~0, ~0, ~0};
72
73 /* VIC0, VIC1, and VIC2 are fully populated. */
74 s5pc1xx_init_irq(vic_valid, ARRAY_SIZE(vic_valid));
75}
76
77struct sysdev_class s5pc100_sysclass = {
78 .name = "s5pc100-core",
79};
80
81static struct sys_device s5pc100_sysdev = {
82 .cls = &s5pc100_sysclass,
83};
84
85static int __init s5pc100_core_init(void)
86{
87 return sysdev_class_register(&s5pc100_sysclass);
88}
89
90core_initcall(s5pc100_core_init);
91
92int __init s5pc100_init(void)
93{
94 printk(KERN_DEBUG "S5PC100: Initialising architecture\n");
95
96 return sysdev_register(&s5pc100_sysdev);
97}
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 000000000000..9d142ccf654b
--- /dev/null
+++ b/arch/arm/mach-s5pc100/include/mach/debug-macro.S
@@ -0,0 +1,38 @@
1/* arch/arm/mach-s5pc100/include/mach/debug-macro.S
2 *
3 * Copyright 2009 Samsung Electronics Co.
4 * Byungho Min <bhmin@samsung.com>
5 *
6 *
7 * Based on mach-s3c6400/include/mach/debug-macro.S
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12*/
13
14/* pull in the relevant register and map files. */
15
16#include <mach/map.h>
17#include <plat/regs-serial.h>
18
19 /* note, for the boot process to work we have to keep the UART
20 * virtual address aligned to an 1MiB boundary for the L1
21 * mapping the head code makes. We keep the UART virtual address
22 * aligned and add in the offset when we load the value here.
23 */
24
25 .macro addruart, rx
26 mrc p15, 0, \rx, c1, c0
27 tst \rx, #1
28 ldreq \rx, = S3C_PA_UART
29 ldrne \rx, = (S3C_VA_UART + S3C_PA_UART & 0xfffff)
30 add \rx, \rx, #(0x400 * CONFIG_DEBUG_S3C_UART)
31 .endm
32
33/* include the reset of the code which will do the work, we're only
34 * compiling for a single cpu processor type so the default of s3c2440
35 * will be fine with us.
36 */
37
38#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 000000000000..67131939e626
--- /dev/null
+++ b/arch/arm/mach-s5pc100/include/mach/entry-macro.S
@@ -0,0 +1,50 @@
1/* arch/arm/mach-s5pc100/include/mach/entry-macro.S
2 *
3 * Copyright 2009 Samsung Electronics Co.
4 * Byungho Min <bhmin@samsung.com>
5 *
6 * Based on mach-s3c6400/include/mach/entry-macro.S
7 *
8 * Low-level IRQ helper macros for the Samsung S5PC1XX series
9 *
10 * This file is licensed under the terms of the GNU General Public
11 * License version 2. This program is licensed "as is" without any
12 * warranty of any kind, whether express or implied.
13*/
14
15#include <asm/hardware/vic.h>
16#include <mach/map.h>
17#include <plat/irqs.h>
18
19 .macro disable_fiq
20 .endm
21
22 .macro get_irqnr_preamble, base, tmp
23 ldr \base, =S3C_VA_VIC0
24 .endm
25
26 .macro arch_ret_to_user, tmp1, tmp2
27 .endm
28
29 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
30
31 @ check the vic0
32 mov \irqnr, # S3C_IRQ_OFFSET + 31
33 ldr \irqstat, [ \base, # VIC_IRQ_STATUS ]
34 teq \irqstat, #0
35
36 @ otherwise try vic1
37 addeq \tmp, \base, #(S3C_VA_VIC1 - S3C_VA_VIC0)
38 addeq \irqnr, \irqnr, #32
39 ldreq \irqstat, [ \tmp, # VIC_IRQ_STATUS ]
40 teqeq \irqstat, #0
41
42 @ otherwise try vic2
43 addeq \tmp, \base, #(S3C_VA_VIC2 - S3C_VA_VIC0)
44 addeq \irqnr, \irqnr, #32
45 ldreq \irqstat, [ \tmp, # VIC_IRQ_STATUS ]
46 teqeq \irqstat, #0
47
48 clzne \irqstat, \irqstat
49 subne \irqnr, \irqnr, \irqstat
50 .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 000000000000..38ce8206a1a6
--- /dev/null
+++ b/arch/arm/mach-s5pc100/include/mach/hardware.h
@@ -0,0 +1,14 @@
1/* linux/arch/arm/mach-s5pc100/include/mach/hardware.h
2 *
3 * Copyright 2009 Samsung Electronics Co.
4 * Byungho Min <bhmin@samsung.com>
5 *
6 * S3C6400 - Hardware support
7 */
8
9#ifndef __ASM_ARCH_HARDWARE_H
10#define __ASM_ARCH_HARDWARE_H __FILE__
11
12/* currently nothing here, placeholder */
13
14#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 000000000000..e39014375470
--- /dev/null
+++ b/arch/arm/mach-s5pc100/include/mach/system.h
@@ -0,0 +1,24 @@
1/* linux/arch/arm/mach-s5pc100/include/mach/system.h
2 *
3 * Copyright 2009 Samsung Electronics Co.
4 * Byungho Min <bhmin@samsung.com>
5 *
6 * S5PC1XX - system implementation
7 *
8 * Based on mach-s3c6400/include/mach/system.h
9 */
10
11#ifndef __ASM_ARCH_SYSTEM_H
12#define __ASM_ARCH_SYSTEM_H __FILE__
13
14static void arch_idle(void)
15{
16 /* nothing here yet */
17}
18
19static void arch_reset(char mode, const char *cmd)
20{
21 /* nothing here yet */
22}
23
24#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 000000000000..01ccf535e76c
--- /dev/null
+++ b/arch/arm/mach-s5pc100/include/mach/uncompress.h
@@ -0,0 +1,28 @@
1/* arch/arm/mach-s5pc100/include/mach/uncompress.h
2 *
3 * Copyright 2009 Samsung Electronics Co.
4 * Byungho Min <bhmin@samsung.com>
5 *
6 * S5PC100 - uncompress code
7 *
8 * Based on mach-s3c6400/include/mach/uncompress.h
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13*/
14
15#ifndef __ASM_ARCH_UNCOMPRESS_H
16#define __ASM_ARCH_UNCOMPRESS_H
17
18#include <mach/map.h>
19#include <plat/uncompress.h>
20
21static void arch_detect_cpu(void)
22{
23 /* we do not need to do any cpu detection here at the moment. */
24 fifo_mask = S3C2440_UFSTAT_TXMASK;
25 fifo_max = 63 << S3C2440_UFSTAT_TXSHIFT;
26}
27
28#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
index 000000000000..715a7330794d
--- /dev/null
+++ b/arch/arm/plat-s5pc1xx/cpu.c
@@ -0,0 +1,112 @@
1/* linux/arch/arm/plat-s5pc1xx/cpu.c
2 *
3 * Copyright 2009 Samsung Electronics Co.
4 * Byungho Min <bhmin@samsung.com>
5 *
6 * S5PC1XX CPU Support
7 *
8 * Based on plat-s3c64xx/cpu.c
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13*/
14
15#include <linux/init.h>
16#include <linux/module.h>
17#include <linux/interrupt.h>
18#include <linux/ioport.h>
19#include <linux/serial_core.h>
20#include <linux/platform_device.h>
21#include <linux/io.h>
22
23#include <mach/hardware.h>
24#include <mach/map.h>
25
26#include <asm/mach/map.h>
27
28#include <plat/regs-serial.h>
29
30#include <plat/cpu.h>
31#include <plat/devs.h>
32#include <plat/clock.h>
33
34#include <plat/s5pc100.h>
35
36/* table of supported CPUs */
37
38static const char name_s5pc100[] = "S5PC100";
39
40static struct cpu_table cpu_ids[] __initdata = {
41 {
42 .idcode = 0x43100000,
43 .idmask = 0xfffff000,
44 .map_io = s5pc100_map_io,
45 .init_clocks = s5pc100_init_clocks,
46 .init_uarts = s5pc100_init_uarts,
47 .init = s5pc100_init,
48 .name = name_s5pc100,
49 },
50};
51/* minimal IO mapping */
52
53/* see notes on uart map in arch/arm/mach-s5pc100/include/mach/debug-macro.S */
54#define UART_OFFS (S3C_PA_UART & 0xffff)
55
56static struct map_desc s5pc1xx_iodesc[] __initdata = {
57 {
58 .virtual = (unsigned long)S5PC1XX_VA_CHIPID,
59 .pfn = __phys_to_pfn(S5PC1XX_PA_CHIPID),
60 .length = SZ_16,
61 .type = MT_DEVICE,
62 }, {
63 .virtual = (unsigned long)S5PC1XX_VA_CLK,
64 .pfn = __phys_to_pfn(S5PC1XX_PA_CLK),
65 .length = SZ_4K,
66 .type = MT_DEVICE,
67 }, {
68 .virtual = (unsigned long)S5PC1XX_VA_PWR,
69 .pfn = __phys_to_pfn(S5PC1XX_PA_PWR),
70 .length = SZ_4K,
71 .type = MT_DEVICE,
72 }, {
73 .virtual = (unsigned long)(S5PC1XX_VA_UART),
74 .pfn = __phys_to_pfn(S5PC1XX_PA_UART),
75 .length = SZ_4K,
76 .type = MT_DEVICE,
77 }, {
78 .virtual = (unsigned long)S5PC1XX_VA_VIC(0),
79 .pfn = __phys_to_pfn(S5PC1XX_PA_VIC(0)),
80 .length = SZ_4K,
81 .type = MT_DEVICE,
82 }, {
83 .virtual = (unsigned long)S5PC1XX_VA_VIC(1),
84 .pfn = __phys_to_pfn(S5PC1XX_PA_VIC(1)),
85 .length = SZ_4K,
86 .type = MT_DEVICE,
87 }, {
88 .virtual = (unsigned long)S5PC1XX_VA_VIC(2),
89 .pfn = __phys_to_pfn(S5PC1XX_PA_VIC(2)),
90 .length = SZ_4K,
91 .type = MT_DEVICE,
92 }, {
93 .virtual = (unsigned long)S5PC1XX_VA_TIMER,
94 .pfn = __phys_to_pfn(S5PC1XX_PA_TIMER),
95 .length = SZ_256,
96 .type = MT_DEVICE,
97 },
98};
99
100/* read cpu identification code */
101
102void __init s5pc1xx_init_io(struct map_desc *mach_desc, int size)
103{
104 unsigned long idcode;
105
106 /* initialise the io descriptors we need for initialisation */
107 iotable_init(s5pc1xx_iodesc, ARRAY_SIZE(s5pc1xx_iodesc));
108 iotable_init(mach_desc, size);
109
110 idcode = __raw_readl(S5PC1XX_VA_CHIPID);
111 s3c_init_cpu(idcode, cpu_ids, ARRAY_SIZE(cpu_ids));
112}
diff --git a/arch/arm/plat-s5pc1xx/include/plat/s5pc100.h b/arch/arm/plat-s5pc1xx/include/plat/s5pc100.h
new file mode 100644
index 000000000000..45e275131665
--- /dev/null
+++ b/arch/arm/plat-s5pc1xx/include/plat/s5pc100.h
@@ -0,0 +1,65 @@
1/* arch/arm/plat-s5pc1xx/include/plat/s5pc100.h
2 *
3 * Copyright 2009 Samsung Electronics Co.
4 * Byungho Min <bhmin@samsung.com>
5 *
6 * Header file for s5pc100 cpu support
7 *
8 * Based on plat-s3c64xx/include/plat/s3c6400.h
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13*/
14
15/* Common init code for S5PC100 related SoCs */
16extern int s5pc100_init(void);
17extern void s5pc100_map_io(void);
18extern void s5pc100_init_clocks(int xtal);
19extern int s5pc100_register_baseclocks(unsigned long xtal);
20extern void s5pc100_init_irq(void);
21extern void s5pc100_init_io(struct map_desc *mach_desc, int size);
22extern void s5pc100_common_init_uarts(struct s3c2410_uartcfg *cfg, int no);
23extern void s5pc100_register_clocks(void);
24extern void s5pc100_setup_clocks(void);
25extern struct sysdev_class s5pc100_sysclass;
26
27#define s5pc100_init_uarts s5pc100_common_init_uarts
28
29/* Some day, belows will be moved to plat-s5pc/include/plat/cpu.h */
30extern void s5pc1xx_init_irq(u32 *vic_valid, int num);
31extern void s5pc1xx_init_io(struct map_desc *mach_desc, int size);
32
33/* Some day, belows will be moved to plat-s5pc/include/plat/clock.h */
34extern struct clk clk_hpll;
35extern struct clk clk_hd0;
36extern struct clk clk_pd0;
37extern struct clk clk_54m;
38extern struct clk clk_dout_mpll2;
39extern void s5pc1xx_register_clocks(void);
40extern int s5pc1xx_sclk0_ctrl(struct clk *clk, int enable);
41extern int s5pc1xx_sclk1_ctrl(struct clk *clk, int enable);
42
43/* Some day, belows will be moved to plat-s5pc/include/plat/devs.h */
44extern struct s3c24xx_uart_resources s5pc1xx_uart_resources[];
45extern struct platform_device s3c_device_g2d;
46extern struct platform_device s3c_device_g3d;
47extern struct platform_device s3c_device_vpp;
48extern struct platform_device s3c_device_tvenc;
49extern struct platform_device s3c_device_tvscaler;
50extern struct platform_device s3c_device_rotator;
51extern struct platform_device s3c_device_jpeg;
52extern struct platform_device s3c_device_onenand;
53extern struct platform_device s3c_device_usb_otghcd;
54extern struct platform_device s3c_device_keypad;
55extern struct platform_device s3c_device_ts;
56extern struct platform_device s3c_device_g3d;
57extern struct platform_device s3c_device_smc911x;
58extern struct platform_device s3c_device_fimc0;
59extern struct platform_device s3c_device_fimc1;
60extern struct platform_device s3c_device_mfc;
61extern struct platform_device s3c_device_ac97;
62extern struct platform_device s3c_device_fimc0;
63extern struct platform_device s3c_device_fimc1;
64extern struct platform_device s3c_device_fimc2;
65
diff --git a/arch/arm/plat-s5pc1xx/s5pc100-init.c b/arch/arm/plat-s5pc1xx/s5pc100-init.c
new file mode 100644
index 000000000000..c58710884ceb
--- /dev/null
+++ b/arch/arm/plat-s5pc1xx/s5pc100-init.c
@@ -0,0 +1,27 @@
1/* linux/arch/arm/plat-s5pc1xx/s5pc100-init.c
2 *
3 * Copyright 2009 Samsung Electronics Co.
4 * Byungho Min <bhmin@samsung.com>
5 *
6 * S5PC100 - CPU initialisation (common with other S5PC1XX chips)
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13#include <linux/kernel.h>
14#include <linux/types.h>
15#include <linux/init.h>
16
17#include <plat/cpu.h>
18#include <plat/devs.h>
19#include <plat/s5pc100.h>
20
21/* uart registration process */
22
23void __init s5pc100_common_init_uarts(struct s3c2410_uartcfg *cfg, int no)
24{
25 /* The driver name is s3c6400-uart to reuse s3c6400_serial_drv */
26 s3c24xx_init_uartdevs("s3c6400-uart", s5pc1xx_uart_resources, cfg, no);
27}
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