diff options
Diffstat (limited to 'src/cpu/samsung/exynos5420/cpu.c')
| -rw-r--r-- | src/cpu/samsung/exynos5420/cpu.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/cpu/samsung/exynos5420/cpu.c b/src/cpu/samsung/exynos5420/cpu.c index 49e1692723..e95b438216 100644 --- a/src/cpu/samsung/exynos5420/cpu.c +++ b/src/cpu/samsung/exynos5420/cpu.c @@ -2,6 +2,7 @@ * This file is part of the coreboot project. * * Copyright 2013 Google Inc. + * Copyright (C) 2012 Samsung Electronics * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -35,6 +36,26 @@ static unsigned int cpu_id; static unsigned int cpu_rev; +/* Setting TZPC[TrustZone Protection Controller] + * We pretty much disable it all, as the kernel + * expects it that way -- and that's not the default. + */ +static void tzpc_init(void) +{ + struct exynos_tzpc *tzpc; + unsigned int addr; + + for (addr = TZPC10_BASE; addr <= TZPC9_BASE; addr += TZPC_BASE_OFFSET) { + tzpc = (struct exynos_tzpc *)addr; + if (addr == TZPC0_BASE) + writel(R0SIZE, &tzpc->r0size); + writel(DECPROTXSET, &tzpc->decprot0set); + writel(DECPROTXSET, &tzpc->decprot1set); + writel(DECPROTXSET, &tzpc->decprot2set); + writel(DECPROTXSET, &tzpc->decprot3set); + } +} + static void set_cpu_id(void) { u32 pro_id = (read32((void *)EXYNOS_PRO_ID) & 0x00FFF000) >> 12; @@ -133,6 +154,8 @@ static void cpu_enable(device_t dev) exynos_displayport_init(dev, lcdbase, fb_size); set_cpu_id(); + + tzpc_init(); } static void cpu_init(device_t dev) |