From 4d88656ba40c3f170d05fabcd393da4aa32967cc Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Wed, 5 Jul 2017 16:34:37 +0800 Subject: drivers: add tzc380 support Add tzc380 support. Signed-off-by: Peng Fan --- drivers/arm/tzc/tzc380.c | 174 ++++++++++++++++++++++++++++++++++++ include/drivers/arm/tzc380.h | 206 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 380 insertions(+) create mode 100644 drivers/arm/tzc/tzc380.c create mode 100644 include/drivers/arm/tzc380.h diff --git a/drivers/arm/tzc/tzc380.c b/drivers/arm/tzc/tzc380.c new file mode 100644 index 00000000..03cd3ed4 --- /dev/null +++ b/drivers/arm/tzc/tzc380.c @@ -0,0 +1,174 @@ +/* + * Copyright 2017 NXP + * + * 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 +#include +#include +#include +#include + +struct tzc380_instance { + uintptr_t base; + uint8_t addr_width; + uint8_t num_regions; +}; + +struct tzc380_instance tzc380; + +static unsigned int tzc380_read_build_config(uintptr_t base) +{ + return mmio_read_32(base + BUILD_CONFIG_OFF); +} + +static void tzc380_write_action(uintptr_t base, tzc_action_t action) +{ + mmio_write_32(base + ACTION_OFF, action); +} + +static void tzc380_write_region_base_low(uintptr_t base, unsigned int region, + unsigned int val) +{ + mmio_write_32(base + REGION_SETUP_LOW_OFF(region), val); +} + +static void tzc380_write_region_base_high(uintptr_t base, unsigned int region, + unsigned int val) +{ + mmio_write_32(base + REGION_SETUP_HIGH_OFF(region), val); +} + +static void tzc380_write_region_attributes(uintptr_t base, unsigned int region, + unsigned int val) +{ + mmio_write_32(base + REGION_ATTRIBUTES_OFF(region), val); +} + +void tzc380_init(uintptr_t base) +{ + unsigned int tzc_build; + + assert(base); + tzc380.base = base; + + /* Save values we will use later. */ + tzc_build = tzc380_read_build_config(tzc380.base); + tzc380.addr_width = ((tzc_build >> BUILD_CONFIG_AW_SHIFT) & + BUILD_CONFIG_AW_MASK) + 1; + tzc380.num_regions = ((tzc_build >> BUILD_CONFIG_NR_SHIFT) & + BUILD_CONFIG_NR_MASK) + 1; +} + +static unsigned int addr_low(uintptr_t addr) +{ + return (unsigned int)addr; +} + +static unsigned int addr_high(uintptr_t addr __unused) +{ +#if (UINTPTR_MAX == UINT64_MAX) + return addr >> 32; +#else + return 0; +#endif +} + + +/* + * `tzc380_configure_region` is used to program regions into the TrustZone + * controller. + */ +void tzc380_configure_region(uint8_t region, uintptr_t region_base, unsigned int attr) +{ + assert(tzc380.base); + + assert(region < tzc380.num_regions); + + tzc380_write_region_base_low(tzc380.base, region, addr_low(region_base)); + tzc380_write_region_base_high(tzc380.base, region, addr_high(region_base)); + tzc380_write_region_attributes(tzc380.base, region, attr); +} + +void tzc380_set_action(tzc_action_t action) +{ + assert(tzc380.base); + + /* + * - Currently no handler is provided to trap an error via interrupt + * or exception. + * - The interrupt action has not been tested. + */ + tzc380_write_action(tzc380.base, action); +} + +#if LOG_LEVEL >= LOG_LEVEL_INFO + +static unsigned int tzc380_read_region_attributes(uintptr_t base, unsigned int region) +{ + return mmio_read_32(base + REGION_ATTRIBUTES_OFF(region)); +} + +static unsigned int tzc380_read_region_base_low(uintptr_t base, unsigned int region) +{ + return mmio_read_32(base + REGION_SETUP_LOW_OFF(region)); +} + +static unsigned int tzc380_read_region_base_high(uintptr_t base, unsigned int region) +{ + return mmio_read_32(base + REGION_SETUP_HIGH_OFF(region)); +} + +#define REGION_MAX 16 +void tzc380_dump_state(void) +{ + unsigned int n; + unsigned int temp_32reg, temp_32reg_h; + + INFO("enter\n"); + INFO("security_inversion_en %x\n", + mmio_read_32(tzc380.base + SECURITY_INV_EN_OFF)); + for (n = 0; n <= REGION_MAX; n++) { + temp_32reg = tzc380_read_region_attributes(tzc380.base, n); + if (!(temp_32reg & TZC_ATTR_REGION_EN_MASK)) + continue; + + INFO("\n"); + INFO("region %d\n", n); + temp_32reg = tzc380_read_region_base_low(tzc380.base, n); + temp_32reg_h = tzc380_read_region_base_high(tzc380.base, n); + INFO("region_base: 0x%08x%08x\n", temp_32reg_h, temp_32reg); + temp_32reg = tzc380_read_region_attributes(tzc380.base, n); + INFO("region sp: %x\n", temp_32reg >> TZC_ATTR_SP_SHIFT); + INFO("region size: %x\n", (temp_32reg & TZC_REGION_SIZE_MASK) >> + TZC_REGION_SIZE_SHIFT); + } + INFO("exit\n"); +} + +#endif diff --git a/include/drivers/arm/tzc380.h b/include/drivers/arm/tzc380.h new file mode 100644 index 00000000..9a3a9c30 --- /dev/null +++ b/include/drivers/arm/tzc380.h @@ -0,0 +1,206 @@ +/* + * Copyright 2017 NXP + * + * Peng Fan + * + * 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. + */ + +#ifndef __TZC400_H__ +#define __TZC400_H__ + +#include + +#define TZC400_REG_SIZE 0x1000 + +#define BUILD_CONFIG_OFF 0x000 +#define ACTION_OFF 0x004 +#define LOCKDOWN_RANGE_OFF 0x008 +#define LOCKDOWN_SELECT_OFF 0x00C +#define INT_STATUS 0x010 +#define INT_CLEAR 0x014 + +#define FAIL_ADDRESS_LOW_OFF 0x020 +#define FAIL_ADDRESS_HIGH_OFF 0x024 +#define FAIL_CONTROL_OFF 0x028 +#define FAIL_ID 0x02c + +#define SPECULATION_CTRL_OFF 0x030 +#define SECURITY_INV_EN_OFF 0x034 + +#define REGION_SETUP_LOW_OFF(n) (0x100 + n * 0x10) +#define REGION_SETUP_HIGH_OFF(n) (0x104 + n * 0x10) +#define REGION_ATTRIBUTES_OFF(n) (0x108 + n * 0x10) + +/* ID Registers */ +#define PID0_OFF 0xfe0 +#define PID1_OFF 0xfe4 +#define PID2_OFF 0xfe8 +#define PID3_OFF 0xfec +#define PID4_OFF 0xfd0 +#define CID0_OFF 0xff0 +#define CID1_OFF 0xff4 +#define CID2_OFF 0xff8 +#define CID3_OFF 0xffc + +#define BUILD_CONFIG_AW_SHIFT 8 +#define BUILD_CONFIG_AW_MASK 0x3f +#define BUILD_CONFIG_NR_SHIFT 0 +#define BUILD_CONFIG_NR_MASK 0xf + +#define ACTION_RV_SHIFT 0 +#define ACTION_RV_MASK 0x3 +#define ACTION_RV_LOWOK 0x0 +#define ACTION_RV_LOWERR 0x1 +#define ACTION_RV_HIGHOK 0x2 +#define ACTION_RV_HIGHERR 0x3 + +#ifndef BIT +#define BIT(nr) (1 << (nr)) +#endif + +/* Speculation is enabled by default. */ +#define SPECULATION_CTRL_WRITE_DISABLE BIT(1) +#define SPECULATION_CTRL_READ_DISABLE BIT(0) + +#define INT_STATUS_OVERRUN_SHIFT 1 +#define INT_STATUS_OVERRUN_MASK 0x1 +#define INT_STATUS_STATUS_SHIFT 0 +#define INT_STATUS_STATUS_MASK 0x1 + +#define INT_CLEAR_CLEAR_SHIFT 0 +#define INT_CLEAR_CLEAR_MASK 0x1 + +#define TZC380_COMPONENT_ID 0xb105f00d +#define TZC380_PERIPH_ID_LOW 0x001bb380 +#define TZC380_PERIPH_ID_HIGH 0x00000004 + +#define TZC_SP_NS_W BIT(0) +#define TZC_SP_NS_R BIT(1) +#define TZC_SP_S_W BIT(2) +#define TZC_SP_S_R BIT(3) + +#define TZC_ATTR_SP_SHIFT 28 +#define TZC_ATTR_SP_ALL ((TZC_SP_S_W | TZC_SP_S_R | TZC_SP_NS_W | \ + TZC_SP_NS_R) << TZC_ATTR_SP_SHIFT) +#define TZC_ATTR_SP_S_RW ((TZC_SP_S_W | TZC_SP_S_R) << \ + TZC_ATTR_SP_SHIFT) +#define TZC_ATTR_SP_NS_RW ((TZC_SP_NS_W | TZC_SP_NS_R) << \ + TZC_ATTR_SP_SHIFT) + +#define TZC_REGION_SIZE_32K 0xe +#define TZC_REGION_SIZE_64K 0xf +#define TZC_REGION_SIZE_128K 0x10 +#define TZC_REGION_SIZE_256K 0x11 +#define TZC_REGION_SIZE_512K 0x12 +#define TZC_REGION_SIZE_1M 0x13 +#define TZC_REGION_SIZE_2M 0x14 +#define TZC_REGION_SIZE_4M 0x15 +#define TZC_REGION_SIZE_8M 0x16 +#define TZC_REGION_SIZE_16M 0x17 +#define TZC_REGION_SIZE_32M 0x18 +#define TZC_REGION_SIZE_64M 0x19 +#define TZC_REGION_SIZE_128M 0x1a +#define TZC_REGION_SIZE_256M 0x1b +#define TZC_REGION_SIZE_512M 0x1c +#define TZC_REGION_SIZE_1G 0x1d +#define TZC_REGION_SIZE_2G 0x1e +#define TZC_REGION_SIZE_4G 0x1f +#define TZC_REGION_SIZE_8G 0x20 +#define TZC_REGION_SIZE_16G 0x21 +#define TZC_REGION_SIZE_32G 0x22 +#define TZC_REGION_SIZE_64G 0x23 +#define TZC_REGION_SIZE_128G 0x24 +#define TZC_REGION_SIZE_256G 0x25 +#define TZC_REGION_SIZE_512G 0x26 +#define TZC_REGION_SIZE_1T 0x27 +#define TZC_REGION_SIZE_2T 0x28 +#define TZC_REGION_SIZE_4T 0x29 +#define TZC_REGION_SIZE_8T 0x2a +#define TZC_REGION_SIZE_16T 0x2b +#define TZC_REGION_SIZE_32T 0x2c +#define TZC_REGION_SIZE_64T 0x2d +#define TZC_REGION_SIZE_128T 0x2e +#define TZC_REGION_SIZE_256T 0x2f +#define TZC_REGION_SIZE_512T 0x30 +#define TZC_REGION_SIZE_1P 0x31 +#define TZC_REGION_SIZE_2P 0x32 +#define TZC_REGION_SIZE_4P 0x33 +#define TZC_REGION_SIZE_8P 0x34 +#define TZC_REGION_SIZE_16P 0x35 +#define TZC_REGION_SIZE_32P 0x36 +#define TZC_REGION_SIZE_64P 0x37 +#define TZC_REGION_SIZE_128P 0x38 +#define TZC_REGION_SIZE_256P 0x39 +#define TZC_REGION_SIZE_512P 0x3a +#define TZC_REGION_SIZE_1E 0x3b +#define TZC_REGION_SIZE_2E 0x3c +#define TZC_REGION_SIZE_4E 0x3d +#define TZC_REGION_SIZE_8E 0x3e +#define TZC_REGION_SIZE_16E 0x3f + +#define TZC_REGION_SIZE_SHIFT 0x1 +#define TZC_REGION_SIZE_MASK (0x3f << 1) +#define TZC_ATTR_REGION_SIZE(s) ((s) << TZC_REGION_SIZE_SHIFT) + +#define TZC_ATTR_REGION_EN_SHIFT 0x0 +#define TZC_ATTR_REGION_EN_MASK 0x1 + +#define TZC_ATTR_REGION_EN +#define TZC_ATTR_REGION_ENABLE 0x1 +#define TZC_ATTR_REGION_DISABLE 0x0 + +void tzc380_init(uintptr_t base); +void tzc380_configure_region(uint8_t region, + uintptr_t region_base, + unsigned int attr); +void tzc380_set_action(tzc_action_t action); +static inline void tzc_init(uintptr_t base) +{ + tzc380_init(base); +} +static inline void tzc_configure_region(uint8_t region, + uintptr_t region_base, + unsigned int attr) +{ + tzc380_configure_region(region, region_base, attr); +} + +static inline void tzc_set_action(tzc_action_t action) +{ + tzc380_set_action(action); +} + +#if LOG_LEVEL >= LOG_LEVEL_INFO +void tzc380_dump_state(void); +#else +static inline void tzc380_dump_state(void) +{ +} +#endif + +#endif /* __DRIVERS_TZC400_H */ -- cgit v1.2.3