diff options
Diffstat (limited to 'arch/arm/mach-imx/cache-l2x0.c')
-rw-r--r-- | arch/arm/mach-imx/cache-l2x0.c | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/arch/arm/mach-imx/cache-l2x0.c b/arch/arm/mach-imx/cache-l2x0.c deleted file mode 100644 index 69d1322add3c..000000000000 --- a/arch/arm/mach-imx/cache-l2x0.c +++ /dev/null | |||
@@ -1,56 +0,0 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2009-2010 Pengutronix | ||
3 | * Sascha Hauer <s.hauer@pengutronix.de> | ||
4 | * Juergen Beisert <j.beisert@pengutronix.de> | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify it under | ||
7 | * the terms of the GNU General Public License version 2 as published by the | ||
8 | * Free Software Foundation. | ||
9 | */ | ||
10 | |||
11 | #include <linux/init.h> | ||
12 | #include <linux/err.h> | ||
13 | #include <linux/kernel.h> | ||
14 | |||
15 | #include <asm/hardware/cache-l2x0.h> | ||
16 | |||
17 | #include <mach/hardware.h> | ||
18 | |||
19 | static int mxc_init_l2x0(void) | ||
20 | { | ||
21 | void __iomem *l2x0_base; | ||
22 | void __iomem *clkctl_base; | ||
23 | |||
24 | if (!cpu_is_mx31() && !cpu_is_mx35()) | ||
25 | return 0; | ||
26 | |||
27 | /* | ||
28 | * First of all, we must repair broken chip settings. There are some | ||
29 | * i.MX35 CPUs in the wild, comming with bogus L2 cache settings. These | ||
30 | * misconfigured CPUs will run amok immediately when the L2 cache gets enabled. | ||
31 | * Workaraound is to setup the correct register setting prior enabling the | ||
32 | * L2 cache. This should not hurt already working CPUs, as they are using the | ||
33 | * same value. | ||
34 | */ | ||
35 | #define L2_MEM_VAL 0x10 | ||
36 | |||
37 | clkctl_base = ioremap(MX35_CLKCTL_BASE_ADDR, 4096); | ||
38 | if (clkctl_base != NULL) { | ||
39 | writel(0x00000515, clkctl_base + L2_MEM_VAL); | ||
40 | iounmap(clkctl_base); | ||
41 | } else { | ||
42 | pr_err("L2 cache: Cannot fix timing. Trying to continue without\n"); | ||
43 | } | ||
44 | |||
45 | l2x0_base = ioremap(MX3x_L2CC_BASE_ADDR, 4096); | ||
46 | if (IS_ERR(l2x0_base)) { | ||
47 | printk(KERN_ERR "remapping L2 cache area failed with %ld\n", | ||
48 | PTR_ERR(l2x0_base)); | ||
49 | return 0; | ||
50 | } | ||
51 | |||
52 | l2x0_init(l2x0_base, 0x00030024, 0x00000000); | ||
53 | |||
54 | return 0; | ||
55 | } | ||
56 | arch_initcall(mxc_init_l2x0); | ||