aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-ux500/include
diff options
context:
space:
mode:
authorSrinidhi Kasagar <srinidhi.kasagar@stericsson.com>2009-11-28 02:17:18 -0500
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-11-28 05:22:52 -0500
commitaa44ef4d43b200c0e318ade2a3c24d00a6fd942a (patch)
tree259b92c5ac721b0d5aa24186fcde9a22572c6a3c /arch/arm/mach-ux500/include
parentc6b503caef9abefb2e90ac83f672b75dc14bacd0 (diff)
ARM: 5831/1: ARM: U8500 core machine support
Adds core support for the ST-Ericsson U8500 platform. It supports memory mappings, binds to the existing modules like GIC, SCU, TWD and local timers and sets up the infrastructure for the secondary core. Reviewed-by: Alessandro Rubini <rubini@unipv.it> Reviewed-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com> Acked-by: Andrea Gallo <andrea.gallo@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-ux500/include')
-rw-r--r--arch/arm/mach-ux500/include/mach/debug-macro.S19
-rw-r--r--arch/arm/mach-ux500/include/mach/entry-macro.S89
-rw-r--r--arch/arm/mach-ux500/include/mach/memory.h18
-rw-r--r--arch/arm/mach-ux500/include/mach/setup.h23
-rw-r--r--arch/arm/mach-ux500/include/mach/smp.h32
-rw-r--r--arch/arm/mach-ux500/include/mach/system.h25
-rw-r--r--arch/arm/mach-ux500/include/mach/timex.h6
-rw-r--r--arch/arm/mach-ux500/include/mach/uncompress.h58
-rw-r--r--arch/arm/mach-ux500/include/mach/vmalloc.h18
9 files changed, 288 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/include/mach/debug-macro.S b/arch/arm/mach-ux500/include/mach/debug-macro.S
new file mode 100644
index 000000000000..8f21b6a95dce
--- /dev/null
+++ b/arch/arm/mach-ux500/include/mach/debug-macro.S
@@ -0,0 +1,19 @@
1/*
2 * Debugging macro include header
3 *
4 * Copyright (C) 2009 ST-Ericsson
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 */
11 .macro addruart,rx
12 mrc p15, 0, \rx, c1, c0
13 tst \rx, #1 @MMU enabled?
14 moveq \rx, #0x80000000 @MMU off, Physical address
15 movne \rx, #0xF0000000 @MMU on, Virtual address
16 orr \rx, \rx, #0x7000
17 .endm
18
19#include <asm/hardware/debug-pl01x.S>
diff --git a/arch/arm/mach-ux500/include/mach/entry-macro.S b/arch/arm/mach-ux500/include/mach/entry-macro.S
new file mode 100644
index 000000000000..eece3301fef7
--- /dev/null
+++ b/arch/arm/mach-ux500/include/mach/entry-macro.S
@@ -0,0 +1,89 @@
1/*
2 * Low-level IRQ helper macros for U8500 platforms
3 *
4 * Copyright (C) 2009 ST-Ericsson.
5 *
6 * This file is a copy of ARM Realview platform.
7 * -just satisfied checkpatch script.
8 *
9 * This file is licensed under the terms of the GNU General Public
10 * License version 2. This program is licensed "as is" without any
11 * warranty of any kind, whether express or implied.
12 */
13#include <mach/hardware.h>
14#include <asm/hardware/gic.h>
15
16 .macro disable_fiq
17 .endm
18
19 .macro get_irqnr_preamble, base, tmp
20 ldr \base, =IO_ADDRESS(U8500_GIC_CPU_BASE)
21 .endm
22
23 .macro arch_ret_to_user, tmp1, tmp2
24 .endm
25
26 /*
27 * The interrupt numbering scheme is defined in the
28 * interrupt controller spec. To wit:
29 *
30 * Interrupts 0-15 are IPI
31 * 16-28 are reserved
32 * 29-31 are local. We allow 30 to be used for the watchdog.
33 * 32-1020 are global
34 * 1021-1022 are reserved
35 * 1023 is "spurious" (no interrupt)
36 *
37 * For now, we ignore all local interrupts so only return an
38 * interrupt if it's between 30 and 1020. The test_for_ipi
39 * routine below will pick up on IPIs.
40 *
41 * A simple read from the controller will tell us the number
42 * of the highest priority enabled interrupt. We then just
43 * need to check whether it is in the valid range for an
44 * IRQ (30-1020 inclusive).
45 */
46
47 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
48
49 /* bits 12-10 = src CPU, 9-0 = int # */
50 ldr \irqstat, [\base, #GIC_CPU_INTACK]
51
52 ldr \tmp, =1021
53
54 bic \irqnr, \irqstat, #0x1c00
55
56 cmp \irqnr, #29
57 cmpcc \irqnr, \irqnr
58 cmpne \irqnr, \tmp
59 cmpcs \irqnr, \irqnr
60
61 .endm
62
63 /* We assume that irqstat (the raw value of the IRQ
64 * acknowledge register) is preserved from the macro above.
65 * If there is an IPI, we immediately signal end of
66 * interrupt on the controller, since this requires the
67 * original irqstat value which we won't easily be able
68 * to recreate later.
69 */
70
71 .macro test_for_ipi, irqnr, irqstat, base, tmp
72 bic \irqnr, \irqstat, #0x1c00
73 cmp \irqnr, #16
74 strcc \irqstat, [\base, #GIC_CPU_EOI]
75 cmpcs \irqnr, \irqnr
76 .endm
77
78 /* As above, this assumes that irqstat and base
79 * are preserved..
80 */
81
82 .macro test_for_ltirq, irqnr, irqstat, base, tmp
83 bic \irqnr, \irqstat, #0x1c00
84 mov \tmp, #0
85 cmp \irqnr, #29
86 moveq \tmp, #1
87 streq \irqstat, [\base, #GIC_CPU_EOI]
88 cmp \tmp, #0
89 .endm
diff --git a/arch/arm/mach-ux500/include/mach/memory.h b/arch/arm/mach-ux500/include/mach/memory.h
new file mode 100644
index 000000000000..510571a59e25
--- /dev/null
+++ b/arch/arm/mach-ux500/include/mach/memory.h
@@ -0,0 +1,18 @@
1/*
2 * Copyright (C) 2009 ST-Ericsson
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 */
9#ifndef __ASM_ARCH_MEMORY_H
10#define __ASM_ARCH_MEMORY_H
11
12/*
13 * Physical DRAM offset.
14 */
15#define PHYS_OFFSET UL(0x00000000)
16#define BUS_OFFSET UL(0x00000000)
17
18#endif
diff --git a/arch/arm/mach-ux500/include/mach/setup.h b/arch/arm/mach-ux500/include/mach/setup.h
new file mode 100644
index 000000000000..cf0ce1687f24
--- /dev/null
+++ b/arch/arm/mach-ux500/include/mach/setup.h
@@ -0,0 +1,23 @@
1/*
2 * Copyright (C) 2009 ST-Ericsson.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * These symbols are needed for board-specific files to call their
9 * own cpu-specific files
10 */
11#ifndef __ASM_ARCH_SETUP_H
12#define __ASM_ARCH_SETUP_H
13
14#include <asm/mach/time.h>
15#include <linux/init.h>
16
17extern void u8500_map_io(void);
18extern void u8500_init_devices(void);
19extern void u8500_init_irq(void);
20/* We re-use nomadik_timer for this platform */
21extern void nmdk_timer_init(void);
22
23#endif /* __ASM_ARCH_SETUP_H */
diff --git a/arch/arm/mach-ux500/include/mach/smp.h b/arch/arm/mach-ux500/include/mach/smp.h
new file mode 100644
index 000000000000..b59f7bc9725d
--- /dev/null
+++ b/arch/arm/mach-ux500/include/mach/smp.h
@@ -0,0 +1,32 @@
1/*
2 * This file is based ARM realview platform.
3 * Copyright (C) ARM Limited.
4 *
5 * This file is licensed under the terms of the GNU General Public
6 * License version 2. This program is licensed "as is" without any
7 * warranty of any kind, whether express or implied.
8 */
9#ifndef ASMARM_ARCH_SMP_H
10#define ASMARM_ARCH_SMP_H
11
12#include <asm/hardware/gic.h>
13
14/* This is required to wakeup the secondary core */
15extern void u8500_secondary_startup(void);
16
17#define hard_smp_processor_id() \
18 ({ \
19 unsigned int cpunum; \
20 __asm__("mrc p15, 0, %0, c0, c0, 5" \
21 : "=r" (cpunum)); \
22 cpunum &= 0x0F; \
23 })
24
25/*
26 * We use IRQ1 as the IPI
27 */
28static inline void smp_cross_call(const struct cpumask *mask)
29{
30 gic_raise_softirq(mask, 1);
31}
32#endif
diff --git a/arch/arm/mach-ux500/include/mach/system.h b/arch/arm/mach-ux500/include/mach/system.h
new file mode 100644
index 000000000000..c0cd8006f1a2
--- /dev/null
+++ b/arch/arm/mach-ux500/include/mach/system.h
@@ -0,0 +1,25 @@
1/*
2 * Copyright (C) 2009 ST-Ericsson.
3 *
4 * This file is licensed under the terms of the GNU General Public
5 * License version 2. This program is licensed "as is" without any
6 * warranty of any kind, whether express or implied.
7 */
8#ifndef __ASM_ARCH_SYSTEM_H
9#define __ASM_ARCH_SYSTEM_H
10
11static inline void arch_idle(void)
12{
13 /*
14 * This should do all the clock switching
15 * and wait for interrupt tricks
16 */
17 cpu_do_idle();
18}
19
20static inline void arch_reset(char mode, const char *cmd)
21{
22 /* yet to be implemented - TODO */
23}
24
25#endif
diff --git a/arch/arm/mach-ux500/include/mach/timex.h b/arch/arm/mach-ux500/include/mach/timex.h
new file mode 100644
index 000000000000..d0942c174018
--- /dev/null
+++ b/arch/arm/mach-ux500/include/mach/timex.h
@@ -0,0 +1,6 @@
1#ifndef __ASM_ARCH_TIMEX_H
2#define __ASM_ARCH_TIMEX_H
3
4#define CLOCK_TICK_RATE 110000000
5
6#endif
diff --git a/arch/arm/mach-ux500/include/mach/uncompress.h b/arch/arm/mach-ux500/include/mach/uncompress.h
new file mode 100644
index 000000000000..8552eb188b50
--- /dev/null
+++ b/arch/arm/mach-ux500/include/mach/uncompress.h
@@ -0,0 +1,58 @@
1/*
2 * Copyright (C) 2009 ST-Ericsson
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */
18#ifndef __ASM_ARCH_UNCOMPRESS_H
19#define __ASM_ARCH_UNCOMPRESS_H
20
21#include <asm/setup.h>
22#include <linux/io.h>
23#include <mach/hardware.h>
24
25#define U8500_UART_DR 0x80007000
26#define U8500_UART_LCRH 0x8000702c
27#define U8500_UART_CR 0x80007030
28#define U8500_UART_FR 0x80007018
29
30static void putc(const char c)
31{
32 /* Do nothing if the UART is not enabled. */
33 if (!(readb(U8500_UART_CR) & 0x1))
34 return;
35
36 if (c == '\n')
37 putc('\r');
38
39 while (readb(U8500_UART_FR) & (1 << 5))
40 barrier();
41 writeb(c, U8500_UART_DR);
42}
43
44static void flush(void)
45{
46 if (!(readb(U8500_UART_CR) & 0x1))
47 return;
48 while (readb(U8500_UART_FR) & (1 << 3))
49 barrier();
50}
51
52static inline void arch_decomp_setup(void)
53{
54}
55
56#define arch_decomp_wdog() /* nothing to do here */
57
58#endif /* __ASM_ARCH_UNCOMPRESS_H */
diff --git a/arch/arm/mach-ux500/include/mach/vmalloc.h b/arch/arm/mach-ux500/include/mach/vmalloc.h
new file mode 100644
index 000000000000..86cdbbce1842
--- /dev/null
+++ b/arch/arm/mach-ux500/include/mach/vmalloc.h
@@ -0,0 +1,18 @@
1/*
2 * Copyright (C) 2009 ST-Ericsson
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */
18#define VMALLOC_END 0xf0000000
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-16 18:52:15 -0500