X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Froms%2Fu-boot%2Farch%2Farm%2Fcpu%2Farmv7%2Fexynos%2Fsoc.c;fp=qemu%2Froms%2Fu-boot%2Farch%2Farm%2Fcpu%2Farmv7%2Fexynos%2Fsoc.c;h=8c7d7d893f1b1e7433279f6b16a420803b687733;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git diff --git a/qemu/roms/u-boot/arch/arm/cpu/armv7/exynos/soc.c b/qemu/roms/u-boot/arch/arm/cpu/armv7/exynos/soc.c new file mode 100644 index 000000000..8c7d7d893 --- /dev/null +++ b/qemu/roms/u-boot/arch/arm/cpu/armv7/exynos/soc.c @@ -0,0 +1,58 @@ +/* + * Copyright (c) 2010 Samsung Electronics. + * Minkyu Kang + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +enum l2_cache_params { + CACHE_TAG_RAM_SETUP = (1 << 9), + CACHE_DATA_RAM_SETUP = (1 << 5), + CACHE_TAG_RAM_LATENCY = (2 << 6), + CACHE_DATA_RAM_LATENCY = (2 << 0) +}; + +void reset_cpu(ulong addr) +{ + writel(0x1, samsung_get_base_swreset()); +} + +#ifndef CONFIG_SYS_DCACHE_OFF +void enable_caches(void) +{ + /* Enable D-cache. I-cache is already enabled in start.S */ + dcache_enable(); +} +#endif + +#ifndef CONFIG_SYS_L2CACHE_OFF +/* + * Set L2 cache parameters + */ +static void exynos5_set_l2cache_params(void) +{ + unsigned int val = 0; + + asm volatile("mrc p15, 1, %0, c9, c0, 2\n" : "=r"(val)); + + val |= CACHE_TAG_RAM_SETUP | + CACHE_DATA_RAM_SETUP | + CACHE_TAG_RAM_LATENCY | + CACHE_DATA_RAM_LATENCY; + + asm volatile("mcr p15, 1, %0, c9, c0, 2\n" : : "r"(val)); +} + +/* + * Sets L2 cache related parameters before enabling data cache + */ +void v7_outer_cache_enable(void) +{ + if (cpu_is_exynos5()) + exynos5_set_l2cache_params(); +} +#endif