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review.shift-gmbh.com / SHIFTPHONES / mainline / linux / 1773e60a816b28f4084810f96e9195aaaa7fb8c3 / . / arch / arm / mach-omap2 / omap4-common.c
blob: c81460445c4dda3b234b8d0737e963d8ba477718 [file] [log] [blame]
Santosh Shilimkarfbc9be12010-05-14 12:05:26 -0700[diff] [blame]1/*
2 * OMAP4 specific common source file.
3 *
4 * Copyright (C) 2010 Texas Instruments, Inc.
5 * Author:
6 * Santosh Shilimkar <santosh.shilimkar@ti.com>
7 *
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#include <linux/kernel.h>
15#include <linux/init.h>
16#include <linux/io.h>
17#include <linux/platform_device.h>
18
19#include <asm/hardware/gic.h>
20#include <asm/hardware/cache-l2x0.h>
21
22#include <mach/hardware.h>
23#include <mach/omap4-common.h>
24
25#ifdef CONFIG_CACHE_L2X0
26void __iomem *l2cache_base;
27#endif
28
29void __iomem *gic_cpu_base_addr;
30void __iomem *gic_dist_base_addr;
31
32
33void __init gic_init_irq(void)
34{
35 /* Static mapping, never released */
36 gic_dist_base_addr = ioremap(OMAP44XX_GIC_DIST_BASE, SZ_4K);
37 BUG_ON(!gic_dist_base_addr);
38 gic_dist_init(0, gic_dist_base_addr, 29);
39
40 /* Static mapping, never released */
41 gic_cpu_base_addr = ioremap(OMAP44XX_GIC_CPU_BASE, SZ_512);
42 BUG_ON(!gic_cpu_base_addr);
43 gic_cpu_init(0, gic_cpu_base_addr);
44}
45
46#ifdef CONFIG_CACHE_L2X0
Santosh Shilimkar4e803c42010-07-31 21:40:10 +0530[diff] [blame]47
48static void omap4_l2x0_disable(void)
49{
50 /* Disable PL310 L2 Cache controller */
51 omap_smc1(0x102, 0x0);
52}
53
Santosh Shilimkarfbc9be12010-05-14 12:05:26 -0700[diff] [blame]54static int __init omap_l2_cache_init(void)
55{
Santosh Shilimkar1773e602010-11-19 23:01:03 +0530[diff] [blame^]56 u32 aux_ctrl = 0;
57
Santosh Shilimkarfbc9be12010-05-14 12:05:26 -0700[diff] [blame]58 /*
59 * To avoid code running on other OMAPs in
60 * multi-omap builds
61 */
62 if (!cpu_is_omap44xx())
63 return -ENODEV;
64
65 /* Static mapping, never released */
66 l2cache_base = ioremap(OMAP44XX_L2CACHE_BASE, SZ_4K);
67 BUG_ON(!l2cache_base);
68
69 /* Enable PL310 L2 Cache controller */
70 omap_smc1(0x102, 0x1);
71
72 /*
Santosh Shilimkara777b722010-09-16 18:44:47 +0530[diff] [blame]73 * 16-way associativity, parity disabled
74 * Way size - 32KB (es1.0)
75 * Way size - 64KB (es2.0 +)
Santosh Shilimkarfbc9be12010-05-14 12:05:26 -0700[diff] [blame]76 */
Santosh Shilimkar1773e602010-11-19 23:01:03 +0530[diff] [blame^]77 aux_ctrl = ((1 << L2X0_AUX_CTRL_ASSOCIATIVITY_SHIFT) |
78 (0x1 << 25) |
79 (0x1 << L2X0_AUX_CTRL_NS_LOCKDOWN_SHIFT) |
80 (0x1 << L2X0_AUX_CTRL_NS_INT_CTRL_SHIFT));
81
Santosh Shilimkara777b722010-09-16 18:44:47 +0530[diff] [blame]82 if (omap_rev() == OMAP4430_REV_ES1_0)
Santosh Shilimkar1773e602010-11-19 23:01:03 +0530[diff] [blame^]83 aux_ctrl |= 0x2 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT;
Santosh Shilimkara777b722010-09-16 18:44:47 +0530[diff] [blame]84 else
Santosh Shilimkar1773e602010-11-19 23:01:03 +0530[diff] [blame^]85 aux_ctrl |= 0x3 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT;
86
87 l2x0_init(l2cache_base, aux_ctrl, L2X0_AUX_CTRL_MASK);
Santosh Shilimkarfbc9be12010-05-14 12:05:26 -0700[diff] [blame]88
Santosh Shilimkar4e803c42010-07-31 21:40:10 +0530[diff] [blame]89 /*
90 * Override default outer_cache.disable with a OMAP4
91 * specific one
92 */
93 outer_cache.disable = omap4_l2x0_disable;
94
Santosh Shilimkarfbc9be12010-05-14 12:05:26 -0700[diff] [blame]95 return 0;
96}
97early_initcall(omap_l2_cache_init);
98#endif