diff --git a/drivers/arm/sp804/sp804_delay_timer.c b/drivers/arm/sp804/sp804_delay_timer.c new file mode 100644 index 0000000000000000000000000000000000000000..78940bfb776c7c5c4a0755d28c43105f778b7231 --- /dev/null +++ b/drivers/arm/sp804/sp804_delay_timer.c @@ -0,0 +1,79 @@ +/* + * 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 <delay_timer.h> +#include <mmio.h> + +uintptr_t sp804_base_addr; + +#define SP804_TIMER1_LOAD (sp804_base_addr + 0x000) +#define SP804_TIMER1_VALUE (sp804_base_addr + 0x004) +#define SP804_TIMER1_CONTROL (sp804_base_addr + 0x008) +#define SP804_TIMER1_BGLOAD (sp804_base_addr + 0x018) + +#define TIMER_CTRL_ONESHOT (1 << 0) +#define TIMER_CTRL_32BIT (1 << 1) +#define TIMER_CTRL_DIV1 (0 << 2) +#define TIMER_CTRL_DIV16 (1 << 2) +#define TIMER_CTRL_DIV256 (2 << 2) +#define TIMER_CTRL_IE (1 << 5) +#define TIMER_CTRL_PERIODIC (1 << 6) +#define TIMER_CTRL_ENABLE (1 << 7) + +/******************************************************************** + * The SP804 timer delay function + ********************************************************************/ +uint32_t sp804_get_timer_value(void) +{ + return mmio_read_32(SP804_TIMER1_VALUE); +} + +/******************************************************************** + * Initialize the 1st timer in the SP804 dual timer with a base + * address and a timer ops + ********************************************************************/ +void sp804_timer_ops_init(uintptr_t base_addr, const timer_ops_t *ops) +{ + assert(base_addr != 0); + assert(ops != 0 && ops->get_timer_value == sp804_get_timer_value); + + sp804_base_addr = base_addr; + timer_init(ops); + + /* disable timer1 */ + mmio_write_32(SP804_TIMER1_CONTROL, 0); + mmio_write_32(SP804_TIMER1_LOAD, UINT32_MAX); + mmio_write_32(SP804_TIMER1_VALUE, UINT32_MAX); + + /* enable as a free running 32-bit counter */ + mmio_write_32(SP804_TIMER1_CONTROL, + TIMER_CTRL_32BIT | TIMER_CTRL_ENABLE); +} diff --git a/drivers/delay_timer/delay_timer.c b/drivers/delay_timer/delay_timer.c new file mode 100644 index 0000000000000000000000000000000000000000..0bee876f37f7053d8df34f4e7a1418e663bc960f --- /dev/null +++ b/drivers/delay_timer/delay_timer.c @@ -0,0 +1,87 @@ +/* + * 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 <delay_timer.h> +#include <platform_def.h> + +/*********************************************************** + * The delay timer implementation + ***********************************************************/ +static const timer_ops_t *ops; + +/*********************************************************** + * Delay for the given number of microseconds. The driver must + * be initialized before calling this function. + ***********************************************************/ +void udelay(uint32_t usec) +{ + assert(ops != 0 && + (ops->clk_mult != 0) && + (ops->clk_div != 0) && + (ops->get_timer_value != 0)); + + uint32_t start, cnt, delta, delta_us; + + /* counter is decreasing */ + start = ops->get_timer_value(); + do { + cnt = ops->get_timer_value(); + if (cnt > start) { + delta = UINT32_MAX - cnt; + delta += start; + } else + delta = start - cnt; + delta_us = (delta * ops->clk_mult) / ops->clk_div; + } while (delta_us < usec); +} + +/*********************************************************** + * Delay for the given number of milliseconds. The driver must + * be initialized before calling this function. + ***********************************************************/ +void mdelay(uint32_t msec) +{ + udelay(msec*1000); +} + +/*********************************************************** + * Initialize the timer. The fields in the provided timer + * ops pointer must be valid. + ***********************************************************/ +void timer_init(const timer_ops_t *ops_ptr) +{ + assert(ops_ptr != 0 && + (ops_ptr->clk_mult != 0) && + (ops_ptr->clk_div != 0) && + (ops_ptr->get_timer_value != 0)); + + ops = ops_ptr; +} diff --git a/include/drivers/arm/sp804_delay_timer.h b/include/drivers/arm/sp804_delay_timer.h new file mode 100644 index 0000000000000000000000000000000000000000..5a335716caea9f4444c6436cdbd13b2ced6949d5 --- /dev/null +++ b/include/drivers/arm/sp804_delay_timer.h @@ -0,0 +1,47 @@ +/* + * 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. + */ + +#ifndef __SP804_DELAY_TIMER_H__ +#define __SP804_DELAY_TIMER_H__ + +#include <delay_timer.h> +#include <stdint.h> + + +uint32_t sp804_get_timer_value(void); + +void sp804_timer_ops_init(uintptr_t base_addr, const timer_ops_t *ops); + +#define sp804_timer_init(base_addr, clk_mult, clk_div) \ + sp804_timer_ops_init((base_addr), &(const timer_ops_t) \ + { sp804_get_timer_value, (clk_mult), (clk_div) }) + + +#endif /* __SP804_DELAY_TIMER_H__ */ diff --git a/include/drivers/delay_timer.h b/include/drivers/delay_timer.h new file mode 100644 index 0000000000000000000000000000000000000000..4f3bdc88abf4204a6b973afac32d87de9319bc70 --- /dev/null +++ b/include/drivers/delay_timer.h @@ -0,0 +1,55 @@ +/* + * 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. + */ + +#ifndef __DELAY_TIMER_H__ +#define __DELAY_TIMER_H__ + +#include <stdint.h> + +/******************************************************************** + * A simple timer driver providing synchronous delay functionality. + * The driver must be initialized with a structure that provides a + * function pointer to return the timer value and a clock + * multiplier/divider. The ratio of the multiplier and the divider is + * the clock frequency in MHz. + ********************************************************************/ + +typedef struct timer_ops { + uint32_t (*get_timer_value)(void); + uint32_t clk_mult; + uint32_t clk_div; +} timer_ops_t; + +void mdelay(uint32_t msec); +void udelay(uint32_t usec); +void timer_init(const timer_ops_t *ops); + + +#endif /* __DELAY_TIMER_H__ */ diff --git a/include/plat/arm/board/common/v2m_def.h b/include/plat/arm/board/common/v2m_def.h index c16e9bc2f1ef899e84d5df0f7b2972d7d7745e93..7a4ef5add1e9b499b7140b542cb50f6fd43267d5 100644 --- a/include/plat/arm/board/common/v2m_def.h +++ b/include/plat/arm/board/common/v2m_def.h @@ -105,6 +105,9 @@ #define V2M_IOFPGA_UART2_CLK_IN_HZ 24000000 #define V2M_IOFPGA_UART3_CLK_IN_HZ 24000000 +/* SP804 timer related constants */ +#define V2M_SP804_TIMER0_BASE 0x1C110000 +#define V2M_SP804_TIMER1_BASE 0x1C120000 #define V2M_MAP_FLASH0 MAP_REGION_FLAT(V2M_FLASH0_BASE,\ V2M_FLASH0_SIZE, \ diff --git a/plat/arm/board/fvp/fvp_bl2_setup.c b/plat/arm/board/fvp/fvp_bl2_setup.c index a08f42c221f0636ebadb0a869f9af83dc4e48a3d..b1cdef487ebfafee2f482899da4b545426a605cd 100644 --- a/plat/arm/board/fvp/fvp_bl2_setup.c +++ b/plat/arm/board/fvp/fvp_bl2_setup.c @@ -29,6 +29,9 @@ */ #include <plat_arm.h> +#include <sp804_delay_timer.h> +#include <v2m_def.h> +#include "fvp_def.h" #include "fvp_private.h" @@ -39,3 +42,12 @@ void bl2_early_platform_setup(meminfo_t *mem_layout) /* Initialize the platform config for future decision making */ fvp_config_setup(); } + +void bl2_platform_setup(void) +{ + arm_bl2_platform_setup(); + + /* Initialize delay timer driver using SP804 dual timer 0 */ + sp804_timer_init(V2M_SP804_TIMER0_BASE, + SP804_TIMER_CLKMULT, SP804_TIMER_CLKDIV); +} diff --git a/plat/arm/board/fvp/fvp_def.h b/plat/arm/board/fvp/fvp_def.h index 47723c78da93ab879d516d699b8c3cd9412ad366..68ef297ce52ddf13d4eb8dd14041ad035234a0b7 100644 --- a/plat/arm/board/fvp/fvp_def.h +++ b/plat/arm/board/fvp/fvp_def.h @@ -83,6 +83,9 @@ /* FVP Power controller base address*/ #define PWRC_BASE 0x1c100000 +/* FVP SP804 timer frequency is 35 MHz*/ +#define SP804_TIMER_CLKMULT 35 +#define SP804_TIMER_CLKDIV 1 /******************************************************************************* * GIC-400 & interrupt handling related constants diff --git a/plat/arm/board/fvp/platform.mk b/plat/arm/board/fvp/platform.mk index cba18c79925852b714b599845e1f06f36d3b92d5..949e6addf152534509f7a89eca19a6c69ffb8120 100644 --- a/plat/arm/board/fvp/platform.mk +++ b/plat/arm/board/fvp/platform.mk @@ -46,7 +46,9 @@ BL1_SOURCES += drivers/io/io_semihosting.c \ plat/arm/board/fvp/fvp_bl1_setup.c \ plat/arm/board/fvp/fvp_io_storage.c -BL2_SOURCES += drivers/io/io_semihosting.c \ +BL2_SOURCES += drivers/arm/sp804/sp804_delay_timer.c \ + drivers/io/io_semihosting.c \ + drivers/delay_timer/delay_timer.c \ lib/semihosting/semihosting.c \ lib/semihosting/aarch64/semihosting_call.S \ plat/arm/board/fvp/fvp_bl2_setup.c \