diff options
Diffstat (limited to 'arch/arm/mach-tegra/common.c')
| -rw-r--r-- | arch/arm/mach-tegra/common.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/common.c b/arch/arm/mach-tegra/common.c index 71b86b5238e2..4504624cc1fd 100644 --- a/arch/arm/mach-tegra/common.c +++ b/arch/arm/mach-tegra/common.c @@ -98,9 +98,21 @@ void __init tegra_init_cache(void) #ifdef CONFIG_CACHE_L2X0 void __iomem *p = IO_ADDRESS(TEGRA_ARM_PERIF_BASE) + 0x3000; +#ifndef CONFIG_TRUSTED_FOUNDATIONS + /* + ISSUE : Some registers of PL310 controler must be called from Secure context! + When called form Normal we obtain an abort. + Instructions that must be called in Secure : + - Tag and Data RAM Latency Control Registers (0x108 & 0x10C) must be written in Secure. + + The following section of code has been regrouped in the implementation of "l2x0_init". + The "l2x0_init" will in fact call an SMC intruction to switch from Normal context to Secure context. + The configuration and activation will be done in Secure. + */ writel(0x331, p + L2X0_TAG_LATENCY_CTRL); writel(0x441, p + L2X0_DATA_LATENCY_CTRL); writel(2, p + L2X0_PWR_CTRL); +#endif l2x0_init(p, 0x6C480001, 0x8200c3fe); #endif |