ARM: tegra: avoid more operations in non-secure world

[oweals/u-boot.git] / arch / arm / mach-tegra / ap.c

diff --git a/arch/arm/mach-tegra/ap.c b/arch/arm/mach-tegra/ap.c
index a17dfd1e225ed39bfa58795bf1529bf7f825fc2f..84c20a48ad4d9d7c3d2004e2412e3a57f7ab8dfd 100644 (file)
--- a/arch/arm/mach-tegra/ap.c
+++ b/arch/arm/mach-tegra/ap.c
@@ -1,15 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
-* (C) Copyright 2010-2014
-* NVIDIA Corporation <www.nvidia.com>
-*
- * SPDX-License-Identifier:    GPL-2.0+
-*/
+ * (C) Copyright 2010-2015
+ * NVIDIA Corporation <www.nvidia.com>
+ */
 
 /* Tegra AP (Application Processor) code */
 
 #include <common.h>
+#include <linux/bug.h>
 #include <asm/io.h>
 #include <asm/arch/gp_padctrl.h>
+#include <asm/arch/mc.h>
 #include <asm/arch-tegra/ap.h>
 #include <asm/arch-tegra/clock.h>
 #include <asm/arch-tegra/fuse.h>
@@ -91,6 +92,13 @@ int tegra_get_chip_sku(void)
                        return TEGRA_SOC_T124;
                }
                break;
+       case CHIPID_TEGRA210:
+               switch (sku_id) {
+               case SKU_ID_T210_ENG:
+               default:
+                       return TEGRA_SOC_T210;
+               }
+               break;
        }
 
        /* unknown chip/sku id */
@@ -99,6 +107,7 @@ int tegra_get_chip_sku(void)
        return TEGRA_SOC_UNKNOWN;
 }
 
+#ifndef CONFIG_ARM64
 static void enable_scu(void)
 {
        struct scu_ctlr *scu = (struct scu_ctlr *)NV_PA_ARM_PERIPHBASE;
@@ -130,8 +139,8 @@ static u32 get_odmdata(void)
         * on BCTs for currently supported SoCs, which are locked down.
         * If this changes in new chips, we can revisit this algorithm.
         */
-
-       u32 bct_start, odmdata;
+       unsigned long bct_start;
+       u32 odmdata;
 
        bct_start = readl(NV_PA_BASE_SRAM + NVBOOTINFOTABLE_BCTPTR);
        odmdata = readl(bct_start + BCT_ODMDATA_OFFSET);
@@ -146,14 +155,70 @@ static void init_pmc_scratch(void)
        int i;
 
        /* SCRATCH0 is initialized by the boot ROM and shouldn't be cleared */
-       for (i = 0; i < 23; i++)
-               writel(0, &pmc->pmc_scratch1+i);
+#if defined(CONFIG_TEGRA_SUPPORT_NON_SECURE)
+       if (!tegra_cpu_is_non_secure())
+#endif
+       {
+               for (i = 0; i < 23; i++)
+                       writel(0, &pmc->pmc_scratch1 + i);
+       }
 
        /* ODMDATA is for kernel use to determine RAM size, LP config, etc. */
        odmdata = get_odmdata();
        writel(odmdata, &pmc->pmc_scratch20);
 }
 
+#ifdef CONFIG_ARMV7_SECURE_RESERVE_SIZE
+void protect_secure_section(void)
+{
+       struct mc_ctlr *mc = (struct mc_ctlr *)NV_PA_MC_BASE;
+
+       /* Must be MB aligned */
+       BUILD_BUG_ON(CONFIG_ARMV7_SECURE_BASE & 0xFFFFF);
+       BUILD_BUG_ON(CONFIG_ARMV7_SECURE_RESERVE_SIZE & 0xFFFFF);
+
+       writel(CONFIG_ARMV7_SECURE_BASE, &mc->mc_security_cfg0);
+       writel(CONFIG_ARMV7_SECURE_RESERVE_SIZE >> 20, &mc->mc_security_cfg1);
+}
+#endif
+
+#if defined(CONFIG_ARMV7_NONSEC)
+static void smmu_flush(struct mc_ctlr *mc)
+{
+       (void)readl(&mc->mc_smmu_config);
+}
+
+static void smmu_enable(void)
+{
+       struct mc_ctlr *mc = (struct mc_ctlr *)NV_PA_MC_BASE;
+       u32 value;
+
+       /*
+        * Enable translation for all clients since access to this register
+        * is restricted to TrustZone-secured requestors. The kernel will use
+        * the per-SWGROUP enable bits to enable or disable translations.
+        */
+       writel(0xffffffff, &mc->mc_smmu_translation_enable_0);
+       writel(0xffffffff, &mc->mc_smmu_translation_enable_1);
+       writel(0xffffffff, &mc->mc_smmu_translation_enable_2);
+       writel(0xffffffff, &mc->mc_smmu_translation_enable_3);
+
+       /*
+        * Enable SMMU globally since access to this register is restricted
+        * to TrustZone-secured requestors.
+        */
+       value = readl(&mc->mc_smmu_config);
+       value |= TEGRA_MC_SMMU_CONFIG_ENABLE;
+       writel(value, &mc->mc_smmu_config);
+
+       smmu_flush(mc);
+}
+#else
+static void smmu_enable(void)
+{
+}
+#endif
+
 void s_init(void)
 {
        /* Init PMC scratch memory */
@@ -164,6 +229,7 @@ void s_init(void)
        /* init the cache */
        config_cache();
 
-       /* init vpr */
-       config_vpr();
+       /* enable SMMU */
+       smmu_enable();
 }
+#endif