stm32: add support for stm32f7 & stm32f746 discovery board
authorVikas Manocha <vikas.manocha@st.com>
Thu, 11 Feb 2016 23:47:20 +0000 (15:47 -0800)
committerTom Rini <trini@konsulko.com>
Wed, 24 Feb 2016 23:43:57 +0000 (18:43 -0500)
This patch adds support for stm32f7 family & stm32f746 board.

Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
19 files changed:
arch/arm/include/asm/arch-stm32f7/gpio.h [new file with mode: 0644]
arch/arm/include/asm/arch-stm32f7/gpt.h [new file with mode: 0644]
arch/arm/include/asm/arch-stm32f7/rcc.h [new file with mode: 0644]
arch/arm/include/asm/arch-stm32f7/stm32.h [new file with mode: 0644]
arch/arm/include/asm/arch-stm32f7/stm32_defs.h [new file with mode: 0644]
arch/arm/include/asm/arch-stm32f7/stm32_periph.h [new file with mode: 0644]
arch/arm/mach-stm32/Kconfig
arch/arm/mach-stm32/Makefile
arch/arm/mach-stm32/stm32f7/Kconfig [new file with mode: 0644]
arch/arm/mach-stm32/stm32f7/Makefile [new file with mode: 0644]
arch/arm/mach-stm32/stm32f7/clock.c [new file with mode: 0644]
arch/arm/mach-stm32/stm32f7/timer.c [new file with mode: 0644]
board/st/stm32f746-disco/Kconfig [new file with mode: 0644]
board/st/stm32f746-disco/MAINTAINERS [new file with mode: 0644]
board/st/stm32f746-disco/Makefile [new file with mode: 0644]
board/st/stm32f746-disco/stm32f746-disco.c [new file with mode: 0644]
configs/stm32f746-disco_defconfig [new file with mode: 0644]
drivers/gpio/stm32_gpio.c
include/configs/stm32f746-disco.h [new file with mode: 0644]

diff --git a/arch/arm/include/asm/arch-stm32f7/gpio.h b/arch/arm/include/asm/arch-stm32f7/gpio.h
new file mode 100644 (file)
index 0000000..2942cd9
--- /dev/null
@@ -0,0 +1,113 @@
+/*
+ * (C) Copyright 2016
+ * Vikas Manocha, <vikas.manocha@st.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#ifndef _STM32_GPIO_H_
+#define _STM32_GPIO_H_
+
+enum stm32_gpio_port {
+       STM32_GPIO_PORT_A = 0,
+       STM32_GPIO_PORT_B,
+       STM32_GPIO_PORT_C,
+       STM32_GPIO_PORT_D,
+       STM32_GPIO_PORT_E,
+       STM32_GPIO_PORT_F,
+       STM32_GPIO_PORT_G,
+       STM32_GPIO_PORT_H,
+       STM32_GPIO_PORT_I
+};
+
+enum stm32_gpio_pin {
+       STM32_GPIO_PIN_0 = 0,
+       STM32_GPIO_PIN_1,
+       STM32_GPIO_PIN_2,
+       STM32_GPIO_PIN_3,
+       STM32_GPIO_PIN_4,
+       STM32_GPIO_PIN_5,
+       STM32_GPIO_PIN_6,
+       STM32_GPIO_PIN_7,
+       STM32_GPIO_PIN_8,
+       STM32_GPIO_PIN_9,
+       STM32_GPIO_PIN_10,
+       STM32_GPIO_PIN_11,
+       STM32_GPIO_PIN_12,
+       STM32_GPIO_PIN_13,
+       STM32_GPIO_PIN_14,
+       STM32_GPIO_PIN_15
+};
+
+enum stm32_gpio_mode {
+       STM32_GPIO_MODE_IN = 0,
+       STM32_GPIO_MODE_OUT,
+       STM32_GPIO_MODE_AF,
+       STM32_GPIO_MODE_AN
+};
+
+enum stm32_gpio_otype {
+       STM32_GPIO_OTYPE_PP = 0,
+       STM32_GPIO_OTYPE_OD
+};
+
+enum stm32_gpio_speed {
+       STM32_GPIO_SPEED_2M = 0,
+       STM32_GPIO_SPEED_25M,
+       STM32_GPIO_SPEED_50M,
+       STM32_GPIO_SPEED_100M
+};
+
+enum stm32_gpio_pupd {
+       STM32_GPIO_PUPD_NO = 0,
+       STM32_GPIO_PUPD_UP,
+       STM32_GPIO_PUPD_DOWN
+};
+
+enum stm32_gpio_af {
+       STM32_GPIO_AF0 = 0,
+       STM32_GPIO_AF1,
+       STM32_GPIO_AF2,
+       STM32_GPIO_AF3,
+       STM32_GPIO_AF4,
+       STM32_GPIO_AF5,
+       STM32_GPIO_AF6,
+       STM32_GPIO_AF7,
+       STM32_GPIO_AF8,
+       STM32_GPIO_AF9,
+       STM32_GPIO_AF10,
+       STM32_GPIO_AF11,
+       STM32_GPIO_AF12,
+       STM32_GPIO_AF13,
+       STM32_GPIO_AF14,
+       STM32_GPIO_AF15
+};
+
+struct stm32_gpio_dsc {
+       enum stm32_gpio_port    port;
+       enum stm32_gpio_pin     pin;
+};
+
+struct stm32_gpio_ctl {
+       enum stm32_gpio_mode    mode;
+       enum stm32_gpio_otype   otype;
+       enum stm32_gpio_speed   speed;
+       enum stm32_gpio_pupd    pupd;
+       enum stm32_gpio_af      af;
+};
+
+static inline unsigned stm32_gpio_to_port(unsigned gpio)
+{
+       return gpio / 16;
+}
+
+static inline unsigned stm32_gpio_to_pin(unsigned gpio)
+{
+       return gpio % 16;
+}
+
+int stm32_gpio_config(const struct stm32_gpio_dsc *gpio_dsc,
+               const struct stm32_gpio_ctl *gpio_ctl);
+int stm32_gpout_set(const struct stm32_gpio_dsc *gpio_dsc, int state);
+
+#endif /* _STM32_GPIO_H_ */
diff --git a/arch/arm/include/asm/arch-stm32f7/gpt.h b/arch/arm/include/asm/arch-stm32f7/gpt.h
new file mode 100644 (file)
index 0000000..903bdf6
--- /dev/null
@@ -0,0 +1,53 @@
+/*
+ * (C) Copyright 2016
+ * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#ifndef _STM32_GPT_H
+#define _STM32_GPT_H
+
+#include <asm/arch/stm32.h>
+
+struct gpt_regs {
+       u32 cr1;
+       u32 cr2;
+       u32 smcr;
+       u32 dier;
+       u32 sr;
+       u32 egr;
+       u32 ccmr1;
+       u32 ccmr2;
+       u32 ccer;
+       u32 cnt;
+       u32 psc;
+       u32 arr;
+       u32 reserved;
+       u32 ccr1;
+       u32 ccr2;
+       u32 ccr3;
+       u32 ccr4;
+       u32 reserved1;
+       u32 dcr;
+       u32 dmar;
+       u32 tim2_5_or;
+};
+
+struct gpt_regs *const gpt1_regs_ptr =
+       (struct gpt_regs *)TIM2_BASE;
+
+/* Timer control1 register  */
+#define GPT_CR1_CEN                    0x0001
+#define GPT_MODE_AUTO_RELOAD           (1 << 7)
+
+/* Auto reload register for free running config */
+#define GPT_FREE_RUNNING               0xFFFFFFFF
+
+/* Timer, HZ specific defines */
+#define CONFIG_STM32_HZ                        1000
+
+/* Timer Event Generation registers */
+#define TIM_EGR_UG                     (1 << 0)
+
+#endif
diff --git a/arch/arm/include/asm/arch-stm32f7/rcc.h b/arch/arm/include/asm/arch-stm32f7/rcc.h
new file mode 100644 (file)
index 0000000..8bfb7b6
--- /dev/null
@@ -0,0 +1,64 @@
+/*
+ * (C) Copyright 2016
+ * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#ifndef _STM32_RCC_H
+#define _STM32_RCC_H
+
+#define RCC_CR         0x00    /* clock control */
+#define RCC_PLLCFGR    0x04    /* PLL configuration */
+#define RCC_CFGR       0x08    /* clock configuration */
+#define RCC_CIR                0x0C    /* clock interrupt */
+#define RCC_AHB1RSTR   0x10    /* AHB1 peripheral reset */
+#define RCC_AHB2RSTR   0x14    /* AHB2 peripheral reset */
+#define RCC_AHB3RSTR   0x18    /* AHB3 peripheral reset */
+#define RCC_APB1RSTR   0x20    /* APB1 peripheral reset */
+#define RCC_APB2RSTR   0x24    /* APB2 peripheral reset */
+#define RCC_AHB1ENR    0x30    /* AHB1 peripheral clock enable */
+#define RCC_AHB2ENR    0x34    /* AHB2 peripheral clock enable */
+#define RCC_AHB3ENR    0x38    /* AHB3 peripheral clock enable */
+#define RCC_APB1ENR    0x40    /* APB1 peripheral clock enable */
+#define RCC_APB2ENR    0x44    /* APB2 peripheral clock enable */
+#define RCC_AHB1LPENR  0x50    /* periph clk enable in low pwr mode */
+#define RCC_AHB2LPENR  0x54    /* AHB2 periph clk enable in low pwr mode */
+#define RCC_AHB3LPENR  0x58    /* AHB3 periph clk enable in low pwr mode */
+#define RCC_APB1LPENR  0x60    /* APB1 periph clk enable in low pwr mode */
+#define RCC_APB2LPENR  0x64    /* APB2 periph clk enable in low pwr mode */
+#define RCC_BDCR       0x70    /* Backup domain control */
+#define RCC_CSR                0x74    /* clock control & status */
+#define RCC_SSCGR      0x80    /* spread spectrum clock generation */
+#define RCC_PLLI2SCFGR 0x84    /* PLLI2S configuration */
+#define RCC_PLLSAICFG  0x88    /* PLLSAI configuration */
+#define RCC_DCKCFG1    0x8C    /* dedicated clocks configuration register */
+#define RCC_DCKCFG2    0x90    /* dedicated clocks configuration register */
+
+#define RCC_APB1ENR_TIM2EN             (1 << 0)
+#define RCC_APB1ENR_PWREN              (1 << 28)
+
+/*
+ * RCC USART specific definitions
+ */
+#define RCC_ENR_USART1EN               (1 << 4)
+#define RCC_ENR_USART2EN               (1 << 17)
+#define RCC_ENR_USART3EN               (1 << 18)
+#define RCC_ENR_USART6EN               (1 <<  5)
+
+/*
+ * RCC GPIO specific definitions
+ */
+#define RCC_ENR_GPIO_A_EN              (1 << 0)
+#define RCC_ENR_GPIO_B_EN              (1 << 1)
+#define RCC_ENR_GPIO_C_EN              (1 << 2)
+#define RCC_ENR_GPIO_D_EN              (1 << 3)
+#define RCC_ENR_GPIO_E_EN              (1 << 4)
+#define RCC_ENR_GPIO_F_EN              (1 << 5)
+#define RCC_ENR_GPIO_G_EN              (1 << 6)
+#define RCC_ENR_GPIO_H_EN              (1 << 7)
+#define RCC_ENR_GPIO_I_EN              (1 << 8)
+#define RCC_ENR_GPIO_J_EN              (1 << 9)
+#define RCC_ENR_GPIO_K_EN              (1 << 10)
+
+#endif
diff --git a/arch/arm/include/asm/arch-stm32f7/stm32.h b/arch/arm/include/asm/arch-stm32f7/stm32.h
new file mode 100644 (file)
index 0000000..713eb2e
--- /dev/null
@@ -0,0 +1,63 @@
+/*
+ * (C) Copyright 2016
+ * Vikas Manocha, STMicroelectronics, <vikas.manocha@st.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#ifndef _ASM_ARCH_HARDWARE_H
+#define _ASM_ARCH_HARDWARE_H
+
+/* STM32F746 */
+#define ITCM_FLASH_BASE                0x00200000UL
+#define AXIM_FLASH_BASE                0x08000000UL
+
+#define ITCM_SRAM_BASE         0x00000000UL
+#define DTCM_SRAM_BASE         0x20000000UL
+#define SRAM1_BASE             0x20010000UL
+#define SRAM2_BASE             0x2004C000UL
+
+#define PERIPH_BASE            0x40000000UL
+
+#define APB1_PERIPH_BASE       (PERIPH_BASE + 0x00000000)
+#define APB2_PERIPH_BASE       (PERIPH_BASE + 0x00010000)
+#define AHB1_PERIPH_BASE       (PERIPH_BASE + 0x00020000)
+#define AHB2_PERIPH_BASE       (PERIPH_BASE + 0x10000000)
+#define AHB3_PERIPH_BASE       (PERIPH_BASE + 0x20000000)
+
+#define TIM2_BASE              (APB1_PERIPH_BASE + 0x0000)
+#define USART2_BASE            (APB1_PERIPH_BASE + 0x4400)
+#define USART3_BASE            (APB1_PERIPH_BASE + 0x4800)
+#define PWR_BASE               (APB1_PERIPH_BASE + 0x7000)
+
+#define USART1_BASE            (APB2_PERIPH_BASE + 0x1000)
+#define USART6_BASE            (APB2_PERIPH_BASE + 0x1400)
+
+#define STM32_GPIOA_BASE       (AHB1_PERIPH_BASE + 0x0000)
+#define STM32_GPIOB_BASE       (AHB1_PERIPH_BASE + 0x0400)
+#define STM32_GPIOC_BASE       (AHB1_PERIPH_BASE + 0x0800)
+#define STM32_GPIOD_BASE       (AHB1_PERIPH_BASE + 0x0C00)
+#define STM32_GPIOE_BASE       (AHB1_PERIPH_BASE + 0x1000)
+#define STM32_GPIOF_BASE       (AHB1_PERIPH_BASE + 0x1400)
+#define STM32_GPIOG_BASE       (AHB1_PERIPH_BASE + 0x1800)
+#define STM32_GPIOH_BASE       (AHB1_PERIPH_BASE + 0x1C00)
+#define STM32_GPIOI_BASE       (AHB1_PERIPH_BASE + 0x2000)
+#define STM32_GPIOJ_BASE       (AHB1_PERIPH_BASE + 0x2400)
+#define STM32_GPIOK_BASE       (AHB1_PERIPH_BASE + 0x2800)
+#define RCC_BASE               (AHB1_PERIPH_BASE + 0x3800)
+#define FLASH_CNTL_BASE                (AHB1_PERIPH_BASE + 0x3C00)
+
+
+#define SDRAM_FMC_BASE         (AHB3_PERIPH_BASE + 0x4A0000140)
+
+enum clock {
+       CLOCK_CORE,
+       CLOCK_AHB,
+       CLOCK_APB1,
+       CLOCK_APB2
+};
+#define STM32_BUS_MASK          0xFFFF0000
+
+int configure_clocks(void);
+
+#endif /* _ASM_ARCH_HARDWARE_H */
diff --git a/arch/arm/include/asm/arch-stm32f7/stm32_defs.h b/arch/arm/include/asm/arch-stm32f7/stm32_defs.h
new file mode 100644 (file)
index 0000000..29b98ae
--- /dev/null
@@ -0,0 +1,15 @@
+/*
+ * (C) Copyright 2016
+ * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#ifndef __STM32_DEFS_H__
+#define __STM32_DEFS_H__
+#include <asm/arch/stm32_periph.h>
+
+int clock_setup(enum periph_clock);
+
+#endif
+
diff --git a/arch/arm/include/asm/arch-stm32f7/stm32_periph.h b/arch/arm/include/asm/arch-stm32f7/stm32_periph.h
new file mode 100644 (file)
index 0000000..38adc4e
--- /dev/null
@@ -0,0 +1,38 @@
+/*
+ * (C) Copyright 2016
+ * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#ifndef __ASM_ARM_ARCH_PERIPH_H
+#define __ASM_ARM_ARCH_PERIPH_H
+
+/*
+ * Peripherals required for pinmux configuration. List will
+ * grow with support for more devices getting added.
+ * Numbering based on interrupt table.
+ *
+ */
+enum periph_id {
+       UART1_GPIOA_9_10 = 0,
+       UART2_GPIOD_5_6,
+};
+
+enum periph_clock {
+       USART1_CLOCK_CFG = 0,
+       USART2_CLOCK_CFG,
+       GPIO_A_CLOCK_CFG,
+       GPIO_B_CLOCK_CFG,
+       GPIO_C_CLOCK_CFG,
+       GPIO_D_CLOCK_CFG,
+       GPIO_E_CLOCK_CFG,
+       GPIO_F_CLOCK_CFG,
+       GPIO_G_CLOCK_CFG,
+       GPIO_H_CLOCK_CFG,
+       GPIO_I_CLOCK_CFG,
+       GPIO_J_CLOCK_CFG,
+       GPIO_K_CLOCK_CFG,
+};
+
+#endif /* __ASM_ARM_ARCH_PERIPH_H */
index 7dbeb04..ec6b3ff 100644 (file)
@@ -6,7 +6,11 @@ config STM32F4
 config STM32F1
        bool "stm32f1 family"
 
+config STM32F7
+       bool "stm32f7 family"
+
 source "arch/arm/mach-stm32/stm32f4/Kconfig"
 source "arch/arm/mach-stm32/stm32f1/Kconfig"
+source "arch/arm/mach-stm32/stm32f7/Kconfig"
 
 endif
index ea06034..ffc537f 100644 (file)
@@ -7,3 +7,4 @@
 
 obj-$(CONFIG_STM32F1) += stm32f1/
 obj-$(CONFIG_STM32F4) += stm32f4/
+obj-$(CONFIG_STM32F7) += stm32f7/
diff --git a/arch/arm/mach-stm32/stm32f7/Kconfig b/arch/arm/mach-stm32/stm32f7/Kconfig
new file mode 100644 (file)
index 0000000..287e5ad
--- /dev/null
@@ -0,0 +1,8 @@
+if STM32F7
+
+config TARGET_STM32F746_DISCO
+       bool "STM32F746 Discovery board"
+
+source "board/st/stm32f746-disco/Kconfig"
+
+endif
diff --git a/arch/arm/mach-stm32/stm32f7/Makefile b/arch/arm/mach-stm32/stm32f7/Makefile
new file mode 100644 (file)
index 0000000..40f1ad3
--- /dev/null
@@ -0,0 +1,8 @@
+#
+# (C) Copyright 2016
+# Vikas Manocha, <vikas.manocha@gmail.com>
+#
+# SPDX-License-Identifier:     GPL-2.0+
+#
+
+obj-y += timer.o clock.o
diff --git a/arch/arm/mach-stm32/stm32f7/clock.c b/arch/arm/mach-stm32/stm32f7/clock.c
new file mode 100644 (file)
index 0000000..17a715b
--- /dev/null
@@ -0,0 +1,56 @@
+/*
+ * (C) Copyright 2016
+ * Vikas Manocha, <vikas.manocha@st.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/rcc.h>
+#include <asm/arch/stm32.h>
+#include <asm/arch/stm32_periph.h>
+
+void clock_setup(int peripheral)
+{
+       switch (peripheral) {
+       case USART1_CLOCK_CFG:
+               setbits_le32(RCC_BASE + RCC_APB2ENR, RCC_ENR_USART1EN);
+               break;
+       case GPIO_A_CLOCK_CFG:
+               setbits_le32(RCC_BASE + RCC_AHB1ENR, RCC_ENR_GPIO_A_EN);
+               break;
+       case GPIO_B_CLOCK_CFG:
+               setbits_le32(RCC_BASE + RCC_AHB1ENR, RCC_ENR_GPIO_B_EN);
+               break;
+       case GPIO_C_CLOCK_CFG:
+               setbits_le32(RCC_BASE + RCC_AHB1ENR, RCC_ENR_GPIO_C_EN);
+               break;
+       case GPIO_D_CLOCK_CFG:
+               setbits_le32(RCC_BASE + RCC_AHB1ENR, RCC_ENR_GPIO_D_EN);
+               break;
+       case GPIO_E_CLOCK_CFG:
+               setbits_le32(RCC_BASE + RCC_AHB1ENR, RCC_ENR_GPIO_E_EN);
+               break;
+       case GPIO_F_CLOCK_CFG:
+               setbits_le32(RCC_BASE + RCC_AHB1ENR, RCC_ENR_GPIO_F_EN);
+               break;
+       case GPIO_G_CLOCK_CFG:
+               setbits_le32(RCC_BASE + RCC_AHB1ENR, RCC_ENR_GPIO_G_EN);
+               break;
+       case GPIO_H_CLOCK_CFG:
+               setbits_le32(RCC_BASE + RCC_AHB1ENR, RCC_ENR_GPIO_H_EN);
+               break;
+       case GPIO_I_CLOCK_CFG:
+               setbits_le32(RCC_BASE + RCC_AHB1ENR, RCC_ENR_GPIO_I_EN);
+               break;
+       case GPIO_J_CLOCK_CFG:
+               setbits_le32(RCC_BASE + RCC_AHB1ENR, RCC_ENR_GPIO_J_EN);
+               break;
+       case GPIO_K_CLOCK_CFG:
+               setbits_le32(RCC_BASE + RCC_AHB1ENR, RCC_ENR_GPIO_K_EN);
+               break;
+       default:
+               break;
+       }
+}
diff --git a/arch/arm/mach-stm32/stm32f7/timer.c b/arch/arm/mach-stm32/stm32f7/timer.c
new file mode 100644 (file)
index 0000000..a7dee10
--- /dev/null
@@ -0,0 +1,112 @@
+/*
+ * (C) Copyright 2016
+ * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/stm32.h>
+#include <asm/arch/gpt.h>
+#include <asm/arch/rcc.h>
+
+#define READ_TIMER()   (readl(&gpt1_regs_ptr->cnt) & GPT_FREE_RUNNING)
+#define GPT_RESOLUTION (CONFIG_SYS_HZ_CLOCK/CONFIG_STM32_HZ)
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define timestamp gd->arch.tbl
+#define lastdec gd->arch.lastinc
+
+int timer_init(void)
+{
+       /* Timer2 clock configuration */
+       setbits_le32(RCC_BASE + RCC_APB1ENR, RCC_APB1ENR_TIM2EN);
+       /* Stop the timer */
+       writel(readl(&gpt1_regs_ptr->cr1) & ~GPT_CR1_CEN, &gpt1_regs_ptr->cr1);
+
+       writel((CONFIG_SYS_CLK_FREQ/CONFIG_SYS_HZ_CLOCK) - 1,
+                                               &gpt1_regs_ptr->psc);
+
+       /* Configure timer for auto-reload */
+       writel(readl(&gpt1_regs_ptr->cr1) | GPT_MODE_AUTO_RELOAD,
+                                               &gpt1_regs_ptr->cr1);
+
+       /* load value for free running */
+       writel(GPT_FREE_RUNNING, &gpt1_regs_ptr->arr);
+
+       /* start timer */
+       writel(readl(&gpt1_regs_ptr->cr1) | GPT_CR1_CEN, &gpt1_regs_ptr->cr1);
+
+       writel(readl(&gpt1_regs_ptr->egr) | TIM_EGR_UG, &gpt1_regs_ptr->egr);
+
+       /* Reset the timer */
+       lastdec = READ_TIMER();
+       timestamp = 0;
+
+       return 0;
+}
+
+/*
+ * timer without interrupts
+ */
+ulong get_timer(ulong base)
+{
+       return (get_timer_masked() / GPT_RESOLUTION) - base;
+}
+
+void __udelay(unsigned long usec)
+{
+       ulong tmo;
+       ulong start = get_timer_masked();
+       ulong tenudelcnt = CONFIG_SYS_HZ_CLOCK / (1000 * 100);
+       ulong rndoff;
+
+       rndoff = (usec % 10) ? 1 : 0;
+
+       /* tenudelcnt timer tick gives 10 microsecconds delay */
+       tmo = ((usec / 10) + rndoff) * tenudelcnt;
+
+       while ((ulong) (get_timer_masked() - start) < tmo)
+               ;
+}
+
+ulong get_timer_masked(void)
+{
+       ulong now = READ_TIMER();
+
+       if (now >= lastdec) {
+               /* normal mode */
+               timestamp += now - lastdec;
+       } else {
+               /* we have an overflow ... */
+               timestamp += now + GPT_FREE_RUNNING - lastdec;
+       }
+       lastdec = now;
+
+       return timestamp;
+}
+
+void udelay_masked(unsigned long usec)
+{
+       return udelay(usec);
+}
+
+/*
+ * This function is derived from PowerPC code (read timebase as long long).
+ * On ARM it just returns the timer value.
+ */
+unsigned long long get_ticks(void)
+{
+       return get_timer(0);
+}
+
+/*
+ * This function is derived from PowerPC code (timebase clock frequency).
+ * On ARM it returns the number of timer ticks per second.
+ */
+ulong get_tbclk(void)
+{
+       return CONFIG_STM32_HZ;
+}
diff --git a/board/st/stm32f746-disco/Kconfig b/board/st/stm32f746-disco/Kconfig
new file mode 100644 (file)
index 0000000..09289d2
--- /dev/null
@@ -0,0 +1,19 @@
+if TARGET_STM32F746_DISCO
+
+config SYS_BOARD
+       string
+       default "stm32f746-disco"
+
+config SYS_VENDOR
+       string
+       default "st"
+
+config SYS_SOC
+       string
+       default "stm32f7"
+
+config SYS_CONFIG_NAME
+       string
+       default "stm32f746-disco"
+
+endif
diff --git a/board/st/stm32f746-disco/MAINTAINERS b/board/st/stm32f746-disco/MAINTAINERS
new file mode 100644 (file)
index 0000000..2df0a65
--- /dev/null
@@ -0,0 +1,6 @@
+STM32F746 DISCOVERY BOARD
+M:     Vikas Manocha <vikas.manocha@st.com>
+S:     Maintained
+F:     board/st/stm32f746-disco
+F:     include/configs/stm32f746-disco.h
+F:     configs/stm32f746-disco_defconfig
diff --git a/board/st/stm32f746-disco/Makefile b/board/st/stm32f746-disco/Makefile
new file mode 100644 (file)
index 0000000..db8a0a4
--- /dev/null
@@ -0,0 +1,8 @@
+#
+# (C) Copyright 2016
+# Vikas Manocha <vikas.manocha@st.com>
+#
+# SPDX-License-Identifier:     GPL-2.0+
+#
+
+obj-y  := stm32f746-disco.o
diff --git a/board/st/stm32f746-disco/stm32f746-disco.c b/board/st/stm32f746-disco/stm32f746-disco.c
new file mode 100644 (file)
index 0000000..0e04d14
--- /dev/null
@@ -0,0 +1,99 @@
+/*
+ * (C) Copyright 2016
+ * Vikas Manocha, <vikas.manocha@st.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/armv7m.h>
+#include <asm/arch/stm32.h>
+#include <asm/arch/gpio.h>
+#include <dm/platdata.h>
+#include <dm/platform_data/serial_stm32x7.h>
+#include <asm/arch/stm32_periph.h>
+#include <asm/arch/stm32_defs.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+const struct stm32_gpio_ctl gpio_ctl_gpout = {
+       .mode = STM32_GPIO_MODE_OUT,
+       .otype = STM32_GPIO_OTYPE_PP,
+       .speed = STM32_GPIO_SPEED_50M,
+       .pupd = STM32_GPIO_PUPD_NO,
+       .af = STM32_GPIO_AF0
+};
+
+const struct stm32_gpio_ctl gpio_ctl_usart = {
+       .mode = STM32_GPIO_MODE_AF,
+       .otype = STM32_GPIO_OTYPE_PP,
+       .speed = STM32_GPIO_SPEED_50M,
+       .pupd = STM32_GPIO_PUPD_UP,
+       .af = STM32_GPIO_AF7
+};
+
+static const struct stm32_gpio_dsc usart_gpio[] = {
+       {STM32_GPIO_PORT_A, STM32_GPIO_PIN_9},  /* TX */
+       {STM32_GPIO_PORT_B, STM32_GPIO_PIN_7},  /* RX */
+};
+
+int uart_setup_gpio(void)
+{
+       int i;
+       int rv = 0;
+
+       clock_setup(GPIO_A_CLOCK_CFG);
+       clock_setup(GPIO_B_CLOCK_CFG);
+       for (i = 0; i < ARRAY_SIZE(usart_gpio); i++) {
+               rv = stm32_gpio_config(&usart_gpio[i], &gpio_ctl_usart);
+               if (rv)
+                       goto out;
+       }
+
+out:
+       return rv;
+}
+
+static const struct stm32x7_serial_platdata serial_platdata = {
+       .base = (struct stm32_usart *)USART1_BASE,
+       .clock = CONFIG_SYS_CLK_FREQ,
+};
+
+U_BOOT_DEVICE(stm32x7_serials) = {
+       .name = "serial_stm32x7",
+       .platdata = &serial_platdata,
+};
+
+u32 get_board_rev(void)
+{
+       return 0;
+}
+
+int board_early_init_f(void)
+{
+       int res;
+
+       res = uart_setup_gpio();
+       clock_setup(USART1_CLOCK_CFG);
+       if (res)
+               return res;
+
+       return 0;
+}
+
+int board_init(void)
+{
+       gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+
+       return 0;
+}
+
+int dram_init(void)
+{
+       gd->bd->bi_dram[0].start = CONFIG_SYS_RAM_BASE;
+       gd->bd->bi_dram[0].size  = CONFIG_SYS_RAM_SIZE;
+
+       gd->ram_size = CONFIG_SYS_RAM_SIZE;
+       return 0;
+}
diff --git a/configs/stm32f746-disco_defconfig b/configs/stm32f746-disco_defconfig
new file mode 100644 (file)
index 0000000..7cfed4a
--- /dev/null
@@ -0,0 +1,9 @@
+CONFIG_ARM=y
+CONFIG_STM32=y
+CONFIG_STM32F7=y
+CONFIG_TARGET_STM32F746_DISCO=y
+CONFIG_SYS_PROMPT="U-Boot > "
+CONFIG_AUTOBOOT_KEYED=y
+CONFIG_AUTOBOOT_PROMPT="Hit SPACE in %d seconds to stop autoboot.\n"
+CONFIG_AUTOBOOT_STOP_STR=" "
+# CONFIG_CMD_SETEXPR is not set
index 739de01..50f86d3 100644 (file)
@@ -19,7 +19,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#if defined(CONFIG_STM32F4)
+#if defined(CONFIG_STM32F4) || defined(CONFIG_STM32F7)
 static const unsigned long io_base[] = {
        STM32_GPIOA_BASE, STM32_GPIOB_BASE, STM32_GPIOC_BASE,
        STM32_GPIOD_BASE, STM32_GPIOE_BASE, STM32_GPIOF_BASE,
@@ -207,7 +207,7 @@ int gpio_direction_input(unsigned gpio)
 
        dsc.port = stm32_gpio_to_port(gpio);
        dsc.pin = stm32_gpio_to_pin(gpio);
-#if defined(CONFIG_STM32F4)
+#if defined(CONFIG_STM32F4) || defined(CONFIG_STM32F7)
        ctl.af = STM32_GPIO_AF0;
        ctl.mode = STM32_GPIO_MODE_IN;
        ctl.otype = STM32_GPIO_OTYPE_PP;
@@ -233,7 +233,7 @@ int gpio_direction_output(unsigned gpio, int value)
 
        dsc.port = stm32_gpio_to_port(gpio);
        dsc.pin = stm32_gpio_to_pin(gpio);
-#if defined(CONFIG_STM32F4)
+#if defined(CONFIG_STM32F4) || defined(CONFIG_STM32F7)
        ctl.af = STM32_GPIO_AF0;
        ctl.mode = STM32_GPIO_MODE_OUT;
        ctl.pupd = STM32_GPIO_PUPD_NO;
diff --git a/include/configs/stm32f746-disco.h b/include/configs/stm32f746-disco.h
new file mode 100644 (file)
index 0000000..e1b8bcb
--- /dev/null
@@ -0,0 +1,89 @@
+/*
+ * (C) Copyright 2016
+ * Vikas Manocha, <vikas.manocha@st.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#define CONFIG_SYS_THUMB_BUILD
+#define CONFIG_SYS_NO_FLASH
+
+#define CONFIG_OF_LIBFDT
+#define CONFIG_BOARD_EARLY_INIT_F
+
+#define CONFIG_SYS_FLASH_BASE          0x08000000
+#define CONFIG_SYS_INIT_SP_ADDR                0x20050000
+#define CONFIG_SYS_TEXT_BASE           0x08000000
+
+#define CONFIG_SYS_ICACHE_OFF
+#define CONFIG_SYS_DCACHE_OFF
+
+/*
+ * Configuration of the external SDRAM memory
+ */
+#define CONFIG_NR_DRAM_BANKS           1
+#define CONFIG_SYS_RAM_SIZE            ((64 + 192) << 10)
+#define CONFIG_SYS_RAM_CS              1
+#define CONFIG_SYS_RAM_FREQ_DIV                2
+#define CONFIG_SYS_RAM_BASE            0x20000000
+#define CONFIG_SYS_SDRAM_BASE          CONFIG_SYS_RAM_BASE
+#define CONFIG_SYS_LOAD_ADDR           0x20000000
+#define CONFIG_LOADADDR                        0x20000000
+
+#define CONFIG_SYS_MAX_FLASH_SECT      12
+#define CONFIG_SYS_MAX_FLASH_BANKS     2
+
+#ifndef CONFIG_SYS_NO_FLASH
+#define CONFIG_ENV_IS_IN_FLASH
+#else
+#define CONFIG_ENV_IS_NOWHERE
+#endif
+#define CONFIG_ENV_SIZE                        (8 << 10)
+
+#define CONFIG_STM32_GPIO
+#define CONFIG_STM32X7_SERIAL
+
+#define CONFIG_SYS_CLK_FREQ            16*1000*1000 /* 180 MHz */
+#define CONFIG_SYS_HZ_CLOCK            1000000 /* Timer is clocked at 1MHz */
+
+#define CONFIG_CMDLINE_TAG
+#define CONFIG_SETUP_MEMORY_TAGS
+#define CONFIG_INITRD_TAG
+#define CONFIG_REVISION_TAG
+
+#define CONFIG_SYS_CBSIZE              1024
+#define CONFIG_SYS_PBSIZE              (CONFIG_SYS_CBSIZE \
+                                       + sizeof(CONFIG_SYS_PROMPT) + 16)
+
+#define CONFIG_SYS_MAXARGS             16
+#define CONFIG_SYS_MALLOC_LEN          (16 * 1024)
+#define CONFIG_STACKSIZE               (64 << 10)
+
+#define CONFIG_BAUDRATE                        115200
+#define CONFIG_BOOTARGS                                                        \
+       "console=ttyS0,115200 earlyprintk consoleblank=0 ignore_loglevel"
+#define CONFIG_BOOTCOMMAND                                             \
+       "run bootcmd_romfs"
+
+#define CONFIG_EXTRA_ENV_SETTINGS \
+       "bootargs_romfs=uclinux.physaddr=0x08180000 root=/dev/mtdblock0\0" \
+       "bootcmd_romfs=setenv bootargs ${bootargs} ${bootargs_romfs};" \
+       "bootm 0x08044000 - 0x08042000\0"
+
+#define CONFIG_BOOTDELAY               3
+
+/*
+ * Command line configuration.
+ */
+#define CONFIG_SYS_LONGHELP
+#define CONFIG_SYS_HUSH_PARSER
+#define CONFIG_AUTO_COMPLETE
+#define CONFIG_CMDLINE_EDITING
+
+#define CONFIG_CMD_MEM
+#define CONFIG_CMD_TIMER
+#undef CONFIG_CMD_IMLS
+#endif /* __CONFIG_H */