diff options
author | Varun Wadekar <vwadekar@nvidia.com> | 2015-05-19 16:48:04 +0530 |
---|---|---|
committer | Varun Wadekar <vwadekar@nvidia.com> | 2015-05-29 16:43:25 +0530 |
commit | 08438e24e10504642634da9ee3dde794ac6fa8f0 (patch) | |
tree | b089a797094d671c9bbc43bf30f42f2e33625b21 /plat/nvidia/tegra/common/drivers | |
parent | c13b2e32f1391a1678c258a01286f100df67cd33 (diff) |
Support for NVIDIA's Tegra T210 SoCs
T210 is the latest chip in the Tegra family of SoCs from NVIDIA. It is an
ARM v8 dual-cluster (A57/A53) SoC, with any one of the clusters being active
at a given point in time.
This patch adds support to boot the Trusted Firmware on T210 SoCs. The patch
also adds support to boot secondary CPUs, enter/exit core power states for
all CPUs in the slow/fast clusters. The support to switch between clusters
is still not available in this patch and would be available later.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Diffstat (limited to 'plat/nvidia/tegra/common/drivers')
-rw-r--r-- | plat/nvidia/tegra/common/drivers/flowctrl/flowctrl.c | 243 | ||||
-rw-r--r-- | plat/nvidia/tegra/common/drivers/memctrl/memctrl.c | 92 | ||||
-rw-r--r-- | plat/nvidia/tegra/common/drivers/pmc/pmc.c | 122 |
3 files changed, 457 insertions, 0 deletions
diff --git a/plat/nvidia/tegra/common/drivers/flowctrl/flowctrl.c b/plat/nvidia/tegra/common/drivers/flowctrl/flowctrl.c new file mode 100644 index 0000000..a36cf2d --- /dev/null +++ b/plat/nvidia/tegra/common/drivers/flowctrl/flowctrl.c @@ -0,0 +1,243 @@ +/* + * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of ARM nor the names of its contributors may be used + * to endorse or promote products derived from this software without specific + * prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <arch_helpers.h> +#include <assert.h> +#include <debug.h> +#include <mmio.h> +#include <pmc.h> +#include <cortex_a53.h> +#include <flowctrl.h> +#include <tegra_def.h> + +#define CLK_RST_DEV_L_SET 0x300 +#define CLK_RST_DEV_L_CLR 0x304 +#define CLK_BPMP_RST (1 << 1) + +#define EVP_BPMP_RESET_VECTOR 0x200 + +static const uint64_t flowctrl_offset_cpu_csr[4] = { + (TEGRA_FLOWCTRL_BASE + FLOWCTRL_CPU0_CSR), + (TEGRA_FLOWCTRL_BASE + FLOWCTRL_CPU1_CSR), + (TEGRA_FLOWCTRL_BASE + FLOWCTRL_CPU1_CSR + 8), + (TEGRA_FLOWCTRL_BASE + FLOWCTRL_CPU1_CSR + 16) +}; + +static const uint64_t flowctrl_offset_halt_cpu[4] = { + (TEGRA_FLOWCTRL_BASE + FLOWCTRL_HALT_CPU0_EVENTS), + (TEGRA_FLOWCTRL_BASE + FLOWCTRL_HALT_CPU1_EVENTS), + (TEGRA_FLOWCTRL_BASE + FLOWCTRL_HALT_CPU1_EVENTS + 8), + (TEGRA_FLOWCTRL_BASE + FLOWCTRL_HALT_CPU1_EVENTS + 16) +}; + +static const uint64_t flowctrl_offset_cc4_ctrl[4] = { + (TEGRA_FLOWCTRL_BASE + FLOWCTRL_CC4_CORE0_CTRL), + (TEGRA_FLOWCTRL_BASE + FLOWCTRL_CC4_CORE0_CTRL + 4), + (TEGRA_FLOWCTRL_BASE + FLOWCTRL_CC4_CORE0_CTRL + 8), + (TEGRA_FLOWCTRL_BASE + FLOWCTRL_CC4_CORE0_CTRL + 12) +}; + +static inline void tegra_fc_cc4_ctrl(int cpu_id, uint32_t val) +{ + mmio_write_32(flowctrl_offset_cc4_ctrl[cpu_id], val); + val = mmio_read_32(flowctrl_offset_cc4_ctrl[cpu_id]); +} + +static inline void tegra_fc_cpu_csr(int cpu_id, uint32_t val) +{ + mmio_write_32(flowctrl_offset_cpu_csr[cpu_id], val); + val = mmio_read_32(flowctrl_offset_cpu_csr[cpu_id]); +} + +static inline void tegra_fc_halt_cpu(int cpu_id, uint32_t val) +{ + mmio_write_32(flowctrl_offset_halt_cpu[cpu_id], val); + val = mmio_read_32(flowctrl_offset_halt_cpu[cpu_id]); +} + +static void tegra_fc_prepare_suspend(int cpu_id, uint32_t csr) +{ + uint32_t val; + + val = FLOWCTRL_HALT_GIC_IRQ | FLOWCTRL_HALT_GIC_FIQ | + FLOWCTRL_HALT_LIC_IRQ | FLOWCTRL_HALT_LIC_FIQ | + FLOWCTRL_WAITEVENT; + tegra_fc_halt_cpu(cpu_id, val); + + val = FLOWCTRL_CSR_INTR_FLAG | FLOWCTRL_CSR_EVENT_FLAG | + FLOWCTRL_CSR_ENABLE | (FLOWCTRL_WAIT_WFI_BITMAP << cpu_id); + tegra_fc_cpu_csr(cpu_id, val | csr); +} + +/******************************************************************************* + * Suspend the current CPU + ******************************************************************************/ +void tegra_fc_cpu_idle(uint32_t mpidr) +{ + int cpu = mpidr & MPIDR_CPU_MASK; + + VERBOSE("CPU%d powering down...\n", cpu); + tegra_fc_prepare_suspend(cpu, 0); +} + +/******************************************************************************* + * Suspend the current CPU cluster + ******************************************************************************/ +void tegra_fc_cluster_idle(uint32_t mpidr) +{ + int cpu = mpidr & MPIDR_CPU_MASK; + uint32_t val; + + VERBOSE("Entering cluster idle state...\n"); + + tegra_fc_cc4_ctrl(cpu, 0); + + /* hardware L2 flush is faster for A53 only */ + tegra_fc_write_32(FLOWCTRL_L2_FLUSH_CONTROL, + !!MPIDR_AFFLVL1_VAL(mpidr)); + + /* suspend the CPU cluster */ + val = FLOWCTRL_PG_CPU_NONCPU << FLOWCTRL_ENABLE_EXT; + tegra_fc_prepare_suspend(cpu, val); +} + +/******************************************************************************* + * Power down the current CPU cluster + ******************************************************************************/ +void tegra_fc_cluster_powerdn(uint32_t mpidr) +{ + int cpu = mpidr & MPIDR_CPU_MASK; + uint32_t val; + + VERBOSE("Entering cluster powerdn state...\n"); + + tegra_fc_cc4_ctrl(cpu, 0); + + /* hardware L2 flush is faster for A53 only */ + tegra_fc_write_32(FLOWCTRL_L2_FLUSH_CONTROL, + read_midr() == CORTEX_A53_MIDR); + + /* power down the CPU cluster */ + val = FLOWCTRL_TURNOFF_CPURAIL << FLOWCTRL_ENABLE_EXT; + tegra_fc_prepare_suspend(cpu, val); +} + +/******************************************************************************* + * Suspend the entire SoC + ******************************************************************************/ +void tegra_fc_soc_powerdn(uint32_t mpidr) +{ + int cpu = mpidr & MPIDR_CPU_MASK; + uint32_t val; + + VERBOSE("Entering SoC powerdn state...\n"); + + tegra_fc_cc4_ctrl(cpu, 0); + + tegra_fc_write_32(FLOWCTRL_L2_FLUSH_CONTROL, 1); + + val = FLOWCTRL_TURNOFF_CPURAIL << FLOWCTRL_ENABLE_EXT; + tegra_fc_prepare_suspend(cpu, val); + + /* overwrite HALT register */ + tegra_fc_halt_cpu(cpu, FLOWCTRL_WAITEVENT); +} + +/******************************************************************************* + * Power up the CPU + ******************************************************************************/ +void tegra_fc_cpu_on(int cpu) +{ + tegra_fc_cpu_csr(cpu, FLOWCTRL_CSR_ENABLE); + tegra_fc_halt_cpu(cpu, FLOWCTRL_WAITEVENT | FLOWCTRL_HALT_SCLK); +} + +/******************************************************************************* + * Power down the CPU + ******************************************************************************/ +void tegra_fc_cpu_off(int cpu) +{ + uint32_t val; + + /* + * Flow controller powers down the CPU during wfi. The CPU would be + * powered on when it receives any interrupt. + */ + val = FLOWCTRL_CSR_INTR_FLAG | FLOWCTRL_CSR_EVENT_FLAG | + FLOWCTRL_CSR_ENABLE | (FLOWCTRL_WAIT_WFI_BITMAP << cpu); + tegra_fc_cpu_csr(cpu, val); + tegra_fc_halt_cpu(cpu, FLOWCTRL_WAITEVENT); + tegra_fc_cc4_ctrl(cpu, 0); +} + +/******************************************************************************* + * Inform the BPMP that we have completed the cluster power up + ******************************************************************************/ +void tegra_fc_lock_active_cluster(void) +{ + uint32_t val; + + val = tegra_fc_read_32(FLOWCTRL_BPMP_CLUSTER_CONTROL); + val |= FLOWCTRL_BPMP_CLUSTER_PWRON_LOCK; + tegra_fc_write_32(FLOWCTRL_BPMP_CLUSTER_CONTROL, val); + val = tegra_fc_read_32(FLOWCTRL_BPMP_CLUSTER_CONTROL); +} + +/******************************************************************************* + * Reset BPMP processor + ******************************************************************************/ +void tegra_fc_reset_bpmp(void) +{ + uint32_t val; + + /* halt BPMP */ + tegra_fc_write_32(FLOWCTRL_HALT_BPMP_EVENTS, FLOWCTRL_WAITEVENT); + + /* Assert BPMP reset */ + mmio_write_32(TEGRA_CAR_RESET_BASE + CLK_RST_DEV_L_SET, CLK_BPMP_RST); + + /* Restore reset address (stored in PMC_SCRATCH39) */ + val = tegra_pmc_read_32(PMC_SCRATCH39); + mmio_write_32(TEGRA_EVP_BASE + EVP_BPMP_RESET_VECTOR, val); + while (val != mmio_read_32(TEGRA_EVP_BASE + EVP_BPMP_RESET_VECTOR)) + ; /* wait till value reaches EVP_BPMP_RESET_VECTOR */ + + /* Wait for 2us before de-asserting the reset signal. */ + val = mmio_read_32(TEGRA_TMRUS_BASE); + val += 2; + while (val > mmio_read_32(TEGRA_TMRUS_BASE)) + ; /* wait for 2us */ + + /* De-assert BPMP reset */ + mmio_write_32(TEGRA_CAR_RESET_BASE + CLK_RST_DEV_L_CLR, CLK_BPMP_RST); + + /* Un-halt BPMP */ + tegra_fc_write_32(FLOWCTRL_HALT_BPMP_EVENTS, 0); +} diff --git a/plat/nvidia/tegra/common/drivers/memctrl/memctrl.c b/plat/nvidia/tegra/common/drivers/memctrl/memctrl.c new file mode 100644 index 0000000..9a8ba66 --- /dev/null +++ b/plat/nvidia/tegra/common/drivers/memctrl/memctrl.c @@ -0,0 +1,92 @@ +/* + * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of ARM nor the names of its contributors may be used + * to endorse or promote products derived from this software without specific + * prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <assert.h> +#include <debug.h> +#include <mmio.h> +#include <memctrl.h> +#include <tegra_def.h> + +/* + * Init SMMU. + */ +void tegra_memctrl_setup(void) +{ + /* + * Setup the Memory controller to allow only secure accesses to + * the TZDRAM carveout + */ + INFO("Configuring SMMU\n"); + + /* allow translations for all MC engines */ + tegra_mc_write_32(MC_SMMU_TRANSLATION_ENABLE_0_0, + (unsigned int)MC_SMMU_TRANSLATION_ENABLE); + tegra_mc_write_32(MC_SMMU_TRANSLATION_ENABLE_1_0, + (unsigned int)MC_SMMU_TRANSLATION_ENABLE); + tegra_mc_write_32(MC_SMMU_TRANSLATION_ENABLE_2_0, + (unsigned int)MC_SMMU_TRANSLATION_ENABLE); + tegra_mc_write_32(MC_SMMU_TRANSLATION_ENABLE_3_0, + (unsigned int)MC_SMMU_TRANSLATION_ENABLE); + tegra_mc_write_32(MC_SMMU_TRANSLATION_ENABLE_4_0, + (unsigned int)MC_SMMU_TRANSLATION_ENABLE); + + tegra_mc_write_32(MC_SMMU_ASID_SECURITY_0, MC_SMMU_ASID_SECURITY); + + tegra_mc_write_32(MC_SMMU_TLB_CONFIG_0, MC_SMMU_TLB_CONFIG_0_RESET_VAL); + tegra_mc_write_32(MC_SMMU_PTC_CONFIG_0, MC_SMMU_PTC_CONFIG_0_RESET_VAL); + + /* flush PTC and TLB */ + tegra_mc_write_32(MC_SMMU_PTC_FLUSH_0, MC_SMMU_PTC_FLUSH_ALL); + (void)tegra_mc_read_32(MC_SMMU_CONFIG_0); /* read to flush writes */ + tegra_mc_write_32(MC_SMMU_TLB_FLUSH_0, MC_SMMU_TLB_FLUSH_ALL); + + /* enable SMMU */ + tegra_mc_write_32(MC_SMMU_CONFIG_0, + MC_SMMU_CONFIG_0_SMMU_ENABLE_ENABLE); + (void)tegra_mc_read_32(MC_SMMU_CONFIG_0); /* read to flush writes */ +} + +/* + * Secure the BL31 DRAM aperture. + * + * phys_base = physical base of TZDRAM aperture + * size_in_bytes = size of aperture in bytes + */ +void tegra_memctrl_tzdram_setup(uint64_t phys_base, uint32_t size_in_bytes) +{ + /* + * Setup the Memory controller to allow only secure accesses to + * the TZDRAM carveout + */ + INFO("Configuring TrustZone DRAM Memory Carveout\n"); + + tegra_mc_write_32(MC_SECURITY_CFG0_0, phys_base); + tegra_mc_write_32(MC_SECURITY_CFG1_0, size_in_bytes >> 20); +} diff --git a/plat/nvidia/tegra/common/drivers/pmc/pmc.c b/plat/nvidia/tegra/common/drivers/pmc/pmc.c new file mode 100644 index 0000000..5796ac7 --- /dev/null +++ b/plat/nvidia/tegra/common/drivers/pmc/pmc.c @@ -0,0 +1,122 @@ +/* + * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of ARM nor the names of its contributors may be used + * to endorse or promote products derived from this software without specific + * prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <arch_helpers.h> +#include <assert.h> +#include <debug.h> +#include <mmio.h> +#include <pmc.h> +#include <tegra_def.h> + +/* Module IDs used during power ungate procedure */ +static const int pmc_cpu_powergate_id[4] = { + 0, /* CPU 0 */ + 9, /* CPU 1 */ + 10, /* CPU 2 */ + 11 /* CPU 3 */ +}; + +/******************************************************************************* + * Power ungate CPU to start the boot process. CPU reset vectors must be + * populated before calling this function. + ******************************************************************************/ +void tegra_pmc_cpu_on(int cpu) +{ + uint32_t val; + + /* + * The PMC deasserts the START bit when it starts the power + * ungate process. Loop till no power toggle is in progress. + */ + do { + val = tegra_pmc_read_32(PMC_PWRGATE_TOGGLE); + } while (val & PMC_TOGGLE_START); + + /* + * Start the power ungate procedure + */ + val = pmc_cpu_powergate_id[cpu] | PMC_TOGGLE_START; + tegra_pmc_write_32(PMC_PWRGATE_TOGGLE, val); + + /* + * The PMC deasserts the START bit when it starts the power + * ungate process. Loop till powergate START bit is asserted. + */ + do { + val = tegra_pmc_read_32(PMC_PWRGATE_TOGGLE); + } while (val & (1 << 8)); + + /* loop till the CPU is power ungated */ + do { + val = tegra_pmc_read_32(PMC_PWRGATE_STATUS); + } while ((val & (1 << pmc_cpu_powergate_id[cpu])) == 0); +} + +/******************************************************************************* + * Setup CPU vectors for resume from deep sleep + ******************************************************************************/ +void tegra_pmc_cpu_setup(uint64_t reset_addr) +{ + uint32_t val; + + tegra_pmc_write_32(PMC_SECURE_SCRATCH34, (reset_addr & 0xFFFFFFFF) | 1); + val = reset_addr >> 32; + tegra_pmc_write_32(PMC_SECURE_SCRATCH35, val & 0x7FF); +} + +/******************************************************************************* + * Lock CPU vectors to restrict further writes + ******************************************************************************/ +void tegra_pmc_lock_cpu_vectors(void) +{ + uint32_t val; + + /* lock PMC_SECURE_SCRATCH34/35 */ + val = tegra_pmc_read_32(PMC_SECURE_DISABLE3); + val |= (PMC_SECURE_DISABLE3_WRITE34_ON | + PMC_SECURE_DISABLE3_WRITE35_ON); + tegra_pmc_write_32(PMC_SECURE_DISABLE3, val); +} + +/******************************************************************************* + * Restart the system + ******************************************************************************/ +__dead2 void tegra_pmc_system_reset(void) +{ + uint32_t reg; + + reg = tegra_pmc_read_32(PMC_CONFIG); + reg |= 0x10; /* restart */ + tegra_pmc_write_32(PMC_CONFIG, reg); + wfi(); + + ERROR("Tegra System Reset: operation not handled.\n"); + panic(); +} |