diff options
Diffstat (limited to 'arch/arm/mach-imx/mm-imx3.c')
| -rw-r--r-- | arch/arm/mach-imx/mm-imx3.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mm-imx3.c b/arch/arm/mach-imx/mm-imx3.c index 6fad0d62052..9f0e82ec339 100644 --- a/arch/arm/mach-imx/mm-imx3.c +++ b/arch/arm/mach-imx/mm-imx3.c @@ -58,6 +58,23 @@ static void imx3_idle(void) : "=r" (reg)); } +static void __iomem *imx3_ioremap(unsigned long phys_addr, size_t size, + unsigned int mtype) +{ + if (mtype == MT_DEVICE) { + /* + * Access all peripherals below 0x80000000 as nonshared device + * on mx3, but leave l2cc alone. Otherwise cache corruptions + * can occur. + */ + if (phys_addr < 0x80000000 && + !addr_in_module(phys_addr, MX3x_L2CC)) + mtype = MT_DEVICE_NONSHARED; + } + + return __arm_ioremap(phys_addr, size, mtype); +} + void imx3_init_l2x0(void) { void __iomem *l2x0_base; @@ -127,6 +144,7 @@ void __init imx31_init_early(void) mxc_set_cpu_type(MXC_CPU_MX31); mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR)); imx_idle = imx3_idle; + imx_ioremap = imx3_ioremap; } void __init imx35_init_early(void) @@ -135,6 +153,7 @@ void __init imx35_init_early(void) mxc_iomux_v3_init(MX35_IO_ADDRESS(MX35_IOMUXC_BASE_ADDR)); mxc_arch_reset_init(MX35_IO_ADDRESS(MX35_WDOG_BASE_ADDR)); imx_idle = imx3_idle; + imx_ioremap = imx3_ioremap; } void __init mx31_init_irq(void) |