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authorShawn Guo <shawn.guo@linaro.org>2012-09-13 19:48:07 +0800
committerShawn Guo <shawn.guo@linaro.org>2012-10-15 10:02:19 +0800
commit3995eb82050a81e11217a0b88b2a5eddd53eb4d6 (patch)
treeb1c04b25317c9dade08d911e8077c8745df8a954 /arch/arm/mach-imx/cpu.c
parente0557c0d1a3a9c38af6777d308f98da12c94e137 (diff)
downloadlinux-3995eb82050a81e11217a0b88b2a5eddd53eb4d6.tar.bz2
ARM: imx: merge plat-mxc into mach-imx
It's really unnecessary to have plat-mxc, and let's merge it into mach-imx. It's pretty much just a bunch of file renaming and Kconfig/Makefile merge. To make the change less invasive, we keep using Kconfig symbol CONFIG_ARCH_MXC for mach-imx sub-architecture. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/mach-imx/cpu.c')
-rw-r--r--arch/arm/mach-imx/cpu.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/cpu.c b/arch/arm/mach-imx/cpu.c
new file mode 100644
index 000000000000..220dd6f93126
--- /dev/null
+++ b/arch/arm/mach-imx/cpu.c
@@ -0,0 +1,44 @@
+
+#include <linux/module.h>
+#include <linux/io.h>
+#include <mach/hardware.h>
+
+unsigned int __mxc_cpu_type;
+EXPORT_SYMBOL(__mxc_cpu_type);
+
+void mxc_set_cpu_type(unsigned int type)
+{
+ __mxc_cpu_type = type;
+}
+
+void imx_print_silicon_rev(const char *cpu, int srev)
+{
+ if (srev == IMX_CHIP_REVISION_UNKNOWN)
+ pr_info("CPU identified as %s, unknown revision\n", cpu);
+ else
+ pr_info("CPU identified as %s, silicon rev %d.%d\n",
+ cpu, (srev >> 4) & 0xf, srev & 0xf);
+}
+
+void __init imx_set_aips(void __iomem *base)
+{
+ unsigned int reg;
+/*
+ * Set all MPROTx to be non-bufferable, trusted for R/W,
+ * not forced to user-mode.
+ */
+ __raw_writel(0x77777777, base + 0x0);
+ __raw_writel(0x77777777, base + 0x4);
+
+/*
+ * Set all OPACRx to be non-bufferable, to not require
+ * supervisor privilege level for access, allow for
+ * write access and untrusted master access.
+ */
+ __raw_writel(0x0, base + 0x40);
+ __raw_writel(0x0, base + 0x44);
+ __raw_writel(0x0, base + 0x48);
+ __raw_writel(0x0, base + 0x4C);
+ reg = __raw_readl(base + 0x50) & 0x00FFFFFF;
+ __raw_writel(reg, base + 0x50);
+}