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-rw-r--r--arch/arm/mach-tegra/Kconfig4
-rw-r--r--arch/arm/mach-tegra/board-paz00.c11
-rw-r--r--arch/arm/mach-tegra/fuse.c53
-rw-r--r--arch/arm/mach-tegra/iomap.h14
-rw-r--r--arch/arm/mach-tegra/powergate.c203
-rw-r--r--arch/arm/mach-tegra/reset.c40
-rw-r--r--arch/arm/mach-tegra/tegra.c6
7 files changed, 293 insertions, 38 deletions
diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig
index 09e740f58b27..b1232d8be6f5 100644
--- a/arch/arm/mach-tegra/Kconfig
+++ b/arch/arm/mach-tegra/Kconfig
@@ -2,6 +2,7 @@ config ARCH_TEGRA
bool "NVIDIA Tegra" if ARCH_MULTI_V7
select ARCH_HAS_CPUFREQ
select ARCH_REQUIRE_GPIOLIB
+ select ARCH_SUPPORTS_TRUSTED_FOUNDATIONS
select ARM_GIC
select CLKSRC_MMIO
select CLKSRC_OF
@@ -14,6 +15,8 @@ config ARCH_TEGRA
select MIGHT_HAVE_CACHE_L2X0
select MIGHT_HAVE_PCI
select PINCTRL
+ select ARCH_HAS_RESET_CONTROLLER
+ select RESET_CONTROLLER
select SOC_BUS
select SPARSE_IRQ
select USB_ARCH_HAS_EHCI if USB_SUPPORT
@@ -63,6 +66,7 @@ config ARCH_TEGRA_124_SOC
bool "Enable support for Tegra124 family"
select ARM_L1_CACHE_SHIFT_6
select HAVE_ARM_ARCH_TIMER
+ select PINCTRL_TEGRA124
help
Support for NVIDIA Tegra T124 processor family, based on the
ARM CortexA15MP CPU
diff --git a/arch/arm/mach-tegra/board-paz00.c b/arch/arm/mach-tegra/board-paz00.c
index 06f024070dab..e4dec9fcb084 100644
--- a/arch/arm/mach-tegra/board-paz00.c
+++ b/arch/arm/mach-tegra/board-paz00.c
@@ -18,6 +18,7 @@
*/
#include <linux/platform_device.h>
+#include <linux/gpio/driver.h>
#include <linux/rfkill-gpio.h>
#include "board.h"
@@ -36,7 +37,17 @@ static struct platform_device wifi_rfkill_device = {
},
};
+static struct gpiod_lookup_table wifi_gpio_lookup = {
+ .dev_id = "rfkill_gpio",
+ .table = {
+ GPIO_LOOKUP_IDX("tegra-gpio", 25, NULL, 0, 0),
+ GPIO_LOOKUP_IDX("tegra-gpio", 85, NULL, 1, 0),
+ { },
+ },
+};
+
void __init tegra_paz00_wifikill_init(void)
{
+ gpiod_add_lookup_table(&wifi_gpio_lookup);
platform_device_register(&wifi_rfkill_device);
}
diff --git a/arch/arm/mach-tegra/fuse.c b/arch/arm/mach-tegra/fuse.c
index d4639c506622..c9ac23b385be 100644
--- a/arch/arm/mach-tegra/fuse.c
+++ b/arch/arm/mach-tegra/fuse.c
@@ -22,6 +22,7 @@
#include <linux/io.h>
#include <linux/export.h>
#include <linux/random.h>
+#include <linux/clk.h>
#include <linux/tegra-soc.h>
#include "fuse.h"
@@ -54,6 +55,7 @@ int tegra_cpu_speedo_id; /* only exist in Tegra30 and later */
int tegra_soc_speedo_id;
enum tegra_revision tegra_revision;
+static struct clk *fuse_clk;
static int tegra_fuse_spare_bit;
static void (*tegra_init_speedo_data)(void);
@@ -77,6 +79,22 @@ static const char *tegra_revision_name[TEGRA_REVISION_MAX] = {
[TEGRA_REVISION_A04] = "A04",
};
+static void tegra_fuse_enable_clk(void)
+{
+ if (IS_ERR(fuse_clk))
+ fuse_clk = clk_get_sys(NULL, "fuse");
+ if (IS_ERR(fuse_clk))
+ return;
+ clk_prepare_enable(fuse_clk);
+}
+
+static void tegra_fuse_disable_clk(void)
+{
+ if (IS_ERR(fuse_clk))
+ return;
+ clk_disable_unprepare(fuse_clk);
+}
+
u32 tegra_fuse_readl(unsigned long offset)
{
return tegra_apb_readl(TEGRA_FUSE_BASE + offset);
@@ -84,7 +102,15 @@ u32 tegra_fuse_readl(unsigned long offset)
bool tegra_spare_fuse(int bit)
{
- return tegra_fuse_readl(tegra_fuse_spare_bit + bit * 4);
+ bool ret;
+
+ tegra_fuse_enable_clk();
+
+ ret = tegra_fuse_readl(tegra_fuse_spare_bit + bit * 4);
+
+ tegra_fuse_disable_clk();
+
+ return ret;
}
static enum tegra_revision tegra_get_revision(u32 id)
@@ -113,10 +139,14 @@ static void tegra_get_process_id(void)
{
u32 reg;
+ tegra_fuse_enable_clk();
+
reg = tegra_fuse_readl(tegra_fuse_spare_bit);
tegra_cpu_process_id = (reg >> 6) & 3;
reg = tegra_fuse_readl(tegra_fuse_spare_bit);
tegra_core_process_id = (reg >> 12) & 3;
+
+ tegra_fuse_disable_clk();
}
u32 tegra_read_chipid(void)
@@ -159,6 +189,15 @@ void __init tegra_init_fuse(void)
reg |= 1 << 28;
writel(reg, IO_ADDRESS(TEGRA_CLK_RESET_BASE + 0x48));
+ /*
+ * Enable FUSE clock. This needs to be hardcoded because the clock
+ * subsystem is not active during early boot.
+ */
+ reg = readl(IO_ADDRESS(TEGRA_CLK_RESET_BASE + 0x14));
+ reg |= 1 << 7;
+ writel(reg, IO_ADDRESS(TEGRA_CLK_RESET_BASE + 0x14));
+ fuse_clk = ERR_PTR(-EINVAL);
+
reg = tegra_fuse_readl(FUSE_SKU_INFO);
randomness[0] = reg;
tegra_sku_id = reg & 0xFF;
@@ -198,10 +237,12 @@ void __init tegra_init_fuse(void)
switch (tegra_chip_id) {
case TEGRA20:
tegra20_fuse_init_randomness();
+ break;
case TEGRA30:
case TEGRA114:
default:
tegra30_fuse_init_randomness();
+ break;
}
pr_info("Tegra Revision: %s SKU: %d CPU Process: %d Core Process: %d\n",
@@ -209,13 +250,3 @@ void __init tegra_init_fuse(void)
tegra_sku_id, tegra_cpu_process_id,
tegra_core_process_id);
}
-
-unsigned long long tegra_chip_uid(void)
-{
- unsigned long long lo, hi;
-
- lo = tegra_fuse_readl(FUSE_UID_LOW);
- hi = tegra_fuse_readl(FUSE_UID_HIGH);
- return (hi << 32ull) | lo;
-}
-EXPORT_SYMBOL(tegra_chip_uid);
diff --git a/arch/arm/mach-tegra/iomap.h b/arch/arm/mach-tegra/iomap.h
index 26b1c2ad0ceb..ee79808e93a3 100644
--- a/arch/arm/mach-tegra/iomap.h
+++ b/arch/arm/mach-tegra/iomap.h
@@ -19,6 +19,7 @@
#ifndef __MACH_TEGRA_IOMAP_H
#define __MACH_TEGRA_IOMAP_H
+#include <asm/pgtable.h>
#include <asm/sizes.h>
#define TEGRA_IRAM_BASE 0x40000000
@@ -115,27 +116,26 @@
* two 256MB io windows (that actually only use about 64KB
* at the start of each).
*
- * We will just map the first 1MB of each window (to minimize
+ * We will just map the first MMU section of each window (to minimize
* pt entries needed) and provide a macro to transform physical
* io addresses to an appropriate void __iomem *.
- *
*/
#define IO_IRAM_PHYS 0x40000000
#define IO_IRAM_VIRT IOMEM(0xFE400000)
#define IO_IRAM_SIZE SZ_256K
-#define IO_CPU_PHYS 0x50040000
-#define IO_CPU_VIRT IOMEM(0xFE000000)
+#define IO_CPU_PHYS 0x50040000
+#define IO_CPU_VIRT IOMEM(0xFE440000)
#define IO_CPU_SIZE SZ_16K
#define IO_PPSB_PHYS 0x60000000
#define IO_PPSB_VIRT IOMEM(0xFE200000)
-#define IO_PPSB_SIZE SZ_1M
+#define IO_PPSB_SIZE SECTION_SIZE
#define IO_APB_PHYS 0x70000000
-#define IO_APB_VIRT IOMEM(0xFE300000)
-#define IO_APB_SIZE SZ_1M
+#define IO_APB_VIRT IOMEM(0xFE000000)
+#define IO_APB_SIZE SECTION_SIZE
#define IO_TO_VIRT_BETWEEN(p, st, sz) ((p) >= (st) && (p) < ((st) + (sz)))
#define IO_TO_VIRT_XLATE(p, pst, vst) (((p) - (pst) + (vst)))
diff --git a/arch/arm/mach-tegra/powergate.c b/arch/arm/mach-tegra/powergate.c
index 85d28e756bb7..3d0c537d9b94 100644
--- a/arch/arm/mach-tegra/powergate.c
+++ b/arch/arm/mach-tegra/powergate.c
@@ -25,6 +25,7 @@
#include <linux/export.h>
#include <linux/init.h>
#include <linux/io.h>
+#include <linux/reset.h>
#include <linux/seq_file.h>
#include <linux/spinlock.h>
#include <linux/clk/tegra.h>
@@ -33,6 +34,10 @@
#include "fuse.h"
#include "iomap.h"
+#define DPD_SAMPLE 0x020
+#define DPD_SAMPLE_ENABLE (1 << 0)
+#define DPD_SAMPLE_DISABLE (0 << 0)
+
#define PWRGATE_TOGGLE 0x30
#define PWRGATE_TOGGLE_START (1 << 8)
@@ -40,6 +45,19 @@
#define PWRGATE_STATUS 0x38
+#define IO_DPD_REQ 0x1b8
+#define IO_DPD_REQ_CODE_IDLE (0 << 30)
+#define IO_DPD_REQ_CODE_OFF (1 << 30)
+#define IO_DPD_REQ_CODE_ON (2 << 30)
+#define IO_DPD_REQ_CODE_MASK (3 << 30)
+
+#define IO_DPD_STATUS 0x1bc
+#define IO_DPD2_REQ 0x1c0
+#define IO_DPD2_STATUS 0x1c4
+#define SEL_DPD_TIM 0x1c8
+
+#define GPU_RG_CNTRL 0x2d4
+
static int tegra_num_powerdomains;
static int tegra_num_cpu_domains;
static const u8 *tegra_cpu_domains;
@@ -58,6 +76,13 @@ static const u8 tegra114_cpu_domains[] = {
TEGRA_POWERGATE_CPU3,
};
+static const u8 tegra124_cpu_domains[] = {
+ TEGRA_POWERGATE_CPU0,
+ TEGRA_POWERGATE_CPU1,
+ TEGRA_POWERGATE_CPU2,
+ TEGRA_POWERGATE_CPU3,
+};
+
static DEFINE_SPINLOCK(tegra_powergate_lock);
static void __iomem *pmc = IO_ADDRESS(TEGRA_PMC_BASE);
@@ -108,6 +133,7 @@ int tegra_powergate_power_off(int id)
return tegra_powergate_set(id, false);
}
+EXPORT_SYMBOL(tegra_powergate_power_off);
int tegra_powergate_is_powered(int id)
{
@@ -128,12 +154,23 @@ int tegra_powergate_remove_clamping(int id)
return -EINVAL;
/*
+ * The Tegra124 GPU has a separate register (with different semantics)
+ * to remove clamps.
+ */
+ if (tegra_chip_id == TEGRA124) {
+ if (id == TEGRA_POWERGATE_3D) {
+ pmc_write(0, GPU_RG_CNTRL);
+ return 0;
+ }
+ }
+
+ /*
* Tegra 2 has a bug where PCIE and VDE clamping masks are
* swapped relatively to the partition ids
*/
- if (id == TEGRA_POWERGATE_VDEC)
+ if (id == TEGRA_POWERGATE_VDEC)
mask = (1 << TEGRA_POWERGATE_PCIE);
- else if (id == TEGRA_POWERGATE_PCIE)
+ else if (id == TEGRA_POWERGATE_PCIE)
mask = (1 << TEGRA_POWERGATE_VDEC);
else
mask = (1 << id);
@@ -142,13 +179,15 @@ int tegra_powergate_remove_clamping(int id)
return 0;
}
+EXPORT_SYMBOL(tegra_powergate_remove_clamping);
/* Must be called with clk disabled, and returns with clk enabled */
-int tegra_powergate_sequence_power_up(int id, struct clk *clk)
+int tegra_powergate_sequence_power_up(int id, struct clk *clk,
+ struct reset_control *rst)
{
int ret;
- tegra_periph_reset_assert(clk);
+ reset_control_assert(rst);
ret = tegra_powergate_power_on(id);
if (ret)
@@ -165,7 +204,7 @@ int tegra_powergate_sequence_power_up(int id, struct clk *clk)
goto err_clamp;
udelay(10);
- tegra_periph_reset_deassert(clk);
+ reset_control_deassert(rst);
return 0;
@@ -202,6 +241,11 @@ int __init tegra_powergate_init(void)
tegra_num_cpu_domains = 4;
tegra_cpu_domains = tegra114_cpu_domains;
break;
+ case TEGRA124:
+ tegra_num_powerdomains = 25;
+ tegra_num_cpu_domains = 4;
+ tegra_cpu_domains = tegra124_cpu_domains;
+ break;
default:
/* Unknown Tegra variant. Disable powergating */
tegra_num_powerdomains = 0;
@@ -243,12 +287,36 @@ static const char * const powergate_name_t30[] = {
};
static const char * const powergate_name_t114[] = {
- [TEGRA_POWERGATE_CPU] = "cpu0",
+ [TEGRA_POWERGATE_CPU] = "crail",
+ [TEGRA_POWERGATE_3D] = "3d",
+ [TEGRA_POWERGATE_VENC] = "venc",
+ [TEGRA_POWERGATE_VDEC] = "vdec",
+ [TEGRA_POWERGATE_MPE] = "mpe",
+ [TEGRA_POWERGATE_HEG] = "heg",
+ [TEGRA_POWERGATE_CPU1] = "cpu1",
+ [TEGRA_POWERGATE_CPU2] = "cpu2",
+ [TEGRA_POWERGATE_CPU3] = "cpu3",
+ [TEGRA_POWERGATE_CELP] = "celp",
+ [TEGRA_POWERGATE_CPU0] = "cpu0",
+ [TEGRA_POWERGATE_C0NC] = "c0nc",
+ [TEGRA_POWERGATE_C1NC] = "c1nc",
+ [TEGRA_POWERGATE_DIS] = "dis",
+ [TEGRA_POWERGATE_DISB] = "disb",
+ [TEGRA_POWERGATE_XUSBA] = "xusba",
+ [TEGRA_POWERGATE_XUSBB] = "xusbb",
+ [TEGRA_POWERGATE_XUSBC] = "xusbc",
+};
+
+static const char * const powergate_name_t124[] = {
+ [TEGRA_POWERGATE_CPU] = "crail",
[TEGRA_POWERGATE_3D] = "3d",
[TEGRA_POWERGATE_VENC] = "venc",
+ [TEGRA_POWERGATE_PCIE] = "pcie",
[TEGRA_POWERGATE_VDEC] = "vdec",
+ [TEGRA_POWERGATE_L2] = "l2",
[TEGRA_POWERGATE_MPE] = "mpe",
[TEGRA_POWERGATE_HEG] = "heg",
+ [TEGRA_POWERGATE_SATA] = "sata",
[TEGRA_POWERGATE_CPU1] = "cpu1",
[TEGRA_POWERGATE_CPU2] = "cpu2",
[TEGRA_POWERGATE_CPU3] = "cpu3",
@@ -256,11 +324,14 @@ static const char * const powergate_name_t114[] = {
[TEGRA_POWERGATE_CPU0] = "cpu0",
[TEGRA_POWERGATE_C0NC] = "c0nc",
[TEGRA_POWERGATE_C1NC] = "c1nc",
+ [TEGRA_POWERGATE_SOR] = "sor",
[TEGRA_POWERGATE_DIS] = "dis",
[TEGRA_POWERGATE_DISB] = "disb",
[TEGRA_POWERGATE_XUSBA] = "xusba",
[TEGRA_POWERGATE_XUSBB] = "xusbb",
[TEGRA_POWERGATE_XUSBC] = "xusbc",
+ [TEGRA_POWERGATE_VIC] = "vic",
+ [TEGRA_POWERGATE_IRAM] = "iram",
};
static int powergate_show(struct seq_file *s, void *data)
@@ -307,6 +378,9 @@ int __init tegra_powergate_debugfs_init(void)
case TEGRA114:
powergate_name = powergate_name_t114;
break;
+ case TEGRA124:
+ powergate_name = powergate_name_t124;
+ break;
}
if (powergate_name) {
@@ -320,3 +394,120 @@ int __init tegra_powergate_debugfs_init(void)
}
#endif
+
+static int tegra_io_rail_prepare(int id, unsigned long *request,
+ unsigned long *status, unsigned int *bit)
+{
+ unsigned long rate, value;
+ struct clk *clk;
+
+ *bit = id % 32;
+
+ /*
+ * There are two sets of 30 bits to select IO rails, but bits 30 and
+ * 31 are control bits rather than IO rail selection bits.
+ */
+ if (id > 63 || *bit == 30 || *bit == 31)
+ return -EINVAL;
+
+ if (id < 32) {
+ *status = IO_DPD_STATUS;
+ *request = IO_DPD_REQ;
+ } else {
+ *status = IO_DPD2_STATUS;
+ *request = IO_DPD2_REQ;
+ }
+
+ clk = clk_get_sys(NULL, "pclk");
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+ rate = clk_get_rate(clk);
+ clk_put(clk);
+
+ pmc_write(DPD_SAMPLE_ENABLE, DPD_SAMPLE);
+
+ /* must be at least 200 ns, in APB (PCLK) clock cycles */
+ value = DIV_ROUND_UP(1000000000, rate);
+ value = DIV_ROUND_UP(200, value);
+ pmc_write(value, SEL_DPD_TIM);
+
+ return 0;
+}
+
+static int tegra_io_rail_poll(unsigned long offset, unsigned long mask,
+ unsigned long val, unsigned long timeout)
+{
+ unsigned long value;
+
+ timeout = jiffies + msecs_to_jiffies(timeout);
+
+ while (time_after(timeout, jiffies)) {
+ value = pmc_read(offset);
+ if ((value & mask) == val)
+ return 0;
+
+ usleep_range(250, 1000);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static void tegra_io_rail_unprepare(void)
+{
+ pmc_write(DPD_SAMPLE_DISABLE, DPD_SAMPLE);
+}
+
+int tegra_io_rail_power_on(int id)
+{
+ unsigned long request, status, value;
+ unsigned int bit, mask;
+ int err;
+
+ err = tegra_io_rail_prepare(id, &request, &status, &bit);
+ if (err < 0)
+ return err;
+
+ mask = 1 << bit;
+
+ value = pmc_read(request);
+ value |= mask;
+ value &= ~IO_DPD_REQ_CODE_MASK;
+ value |= IO_DPD_REQ_CODE_OFF;
+ pmc_write(value, request);
+
+ err = tegra_io_rail_poll(status, mask, 0, 250);
+ if (err < 0)
+ return err;
+
+ tegra_io_rail_unprepare();
+
+ return 0;
+}
+
+int tegra_io_rail_power_off(int id)
+{
+ unsigned long request, status, value;
+ unsigned int bit, mask;
+ int err;
+
+ err = tegra_io_rail_prepare(id, &request, &status, &bit);
+ if (err < 0)
+ return err;
+
+ mask = 1 << bit;
+
+ value = pmc_read(request);
+ value |= mask;
+ value &= ~IO_DPD_REQ_CODE_MASK;
+ value |= IO_DPD_REQ_CODE_ON;
+ pmc_write(value, request);
+
+ err = tegra_io_rail_poll(status, mask, mask, 250);
+ if (err < 0)
+ return err;
+
+ tegra_io_rail_unprepare();
+
+ return 0;
+}
diff --git a/arch/arm/mach-tegra/reset.c b/arch/arm/mach-tegra/reset.c
index 568f5bbf979d..146fe8e0ae7c 100644
--- a/arch/arm/mach-tegra/reset.c
+++ b/arch/arm/mach-tegra/reset.c
@@ -21,6 +21,7 @@
#include <asm/cacheflush.h>
#include <asm/hardware/cache-l2x0.h>
+#include <asm/firmware.h>
#include "iomap.h"
#include "irammap.h"
@@ -33,26 +34,18 @@
static bool is_enabled;
-static void __init tegra_cpu_reset_handler_enable(void)
+static void __init tegra_cpu_reset_handler_set(const u32 reset_address)
{
- void __iomem *iram_base = IO_ADDRESS(TEGRA_IRAM_RESET_BASE);
void __iomem *evp_cpu_reset =
IO_ADDRESS(TEGRA_EXCEPTION_VECTORS_BASE + 0x100);
void __iomem *sb_ctrl = IO_ADDRESS(TEGRA_SB_BASE);
u32 reg;
- BUG_ON(is_enabled);
- BUG_ON(tegra_cpu_reset_handler_size > TEGRA_IRAM_RESET_HANDLER_SIZE);
-
- memcpy(iram_base, (void *)__tegra_cpu_reset_handler_start,
- tegra_cpu_reset_handler_size);
-
/*
* NOTE: This must be the one and only write to the EVP CPU reset
* vector in the entire system.
*/
- writel(TEGRA_IRAM_RESET_BASE + tegra_cpu_reset_handler_offset,
- evp_cpu_reset);
+ writel(reset_address, evp_cpu_reset);
wmb();
reg = readl(evp_cpu_reset);
@@ -66,8 +59,33 @@ static void __init tegra_cpu_reset_handler_enable(void)
writel(reg, sb_ctrl);
wmb();
}
+}
+
+static void __init tegra_cpu_reset_handler_enable(void)
+{
+ void __iomem *iram_base = IO_ADDRESS(TEGRA_IRAM_RESET_BASE);
+ const u32 reset_address = TEGRA_IRAM_RESET_BASE +
+ tegra_cpu_reset_handler_offset;
+ int err;
+
+ BUG_ON(is_enabled);
+ BUG_ON(tegra_cpu_reset_handler_size > TEGRA_IRAM_RESET_HANDLER_SIZE);
- is_enabled = true;
+ memcpy(iram_base, (void *)__tegra_cpu_reset_handler_start,
+ tegra_cpu_reset_handler_size);
+
+ err = call_firmware_op(set_cpu_boot_addr, 0, reset_address);
+ switch (err) {
+ case -ENOSYS:
+ tegra_cpu_reset_handler_set(reset_address);
+ /* pass-through */
+ case 0:
+ is_enabled = true;
+ break;
+ default:
+ pr_crit("Cannot set CPU reset handler: %d\n", err);
+ BUG();
+ }
}
void __init tegra_cpu_reset_handler_init(void)
diff --git a/arch/arm/mach-tegra/tegra.c b/arch/arm/mach-tegra/tegra.c
index 73368176c6e8..303a285d80fd 100644
--- a/arch/arm/mach-tegra/tegra.c
+++ b/arch/arm/mach-tegra/tegra.c
@@ -40,6 +40,7 @@
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/setup.h>
+#include <asm/trusted_foundations.h>
#include "apbio.h"
#include "board.h"
@@ -60,15 +61,13 @@
* kernel is loaded. The data is declared here rather than debug-macro.S so
* that multiple inclusions of debug-macro.S point at the same data.
*/
-u32 tegra_uart_config[4] = {
+u32 tegra_uart_config[3] = {
/* Debug UART initialization required */
1,
/* Debug UART physical address */
0,
/* Debug UART virtual address */
0,
- /* Scratch space for debug macro */
- 0,
};
static void __init tegra_init_cache(void)
@@ -90,6 +89,7 @@ static void __init tegra_init_cache(void)
static void __init tegra_init_early(void)
{
+ of_register_trusted_foundations();
tegra_apb_io_init();
tegra_init_fuse();
tegra_cpu_reset_handler_init();