path: root/chip/stm32/registers-stm32f0.h

/* Copyright 2019 The Chromium OS Authors. All rights reserved.
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

/**
 * @file
 * @brief Register map for the STM32F0 family of chips
 *
 * This header file should not be included directly.
 * Please include registers.h instead.
 *
 * Known Chip Variants
 * - STM32F03X
 * - STM32F05X
 * - STM32F070
 * - STM32F07X
 * - STM32F09X
 */

#ifndef __CROS_EC_REGISTERS_H
#error "This header file should not be included directly."
#endif

/* --- IRQ numbers --- */
#define STM32_IRQ_WWDG             0
#define STM32_IRQ_PVD              1
#define STM32_IRQ_RTC_WAKEUP       2
#define STM32_IRQ_RTC_ALARM        2
#define STM32_IRQ_FLASH            3
#define STM32_IRQ_RCC              4
#define STM32_IRQ_EXTI0_1          5
#define STM32_IRQ_EXTI2_3          6
#define STM32_IRQ_EXTI4_15         7
#define STM32_IRQ_TSC              8
#define STM32_IRQ_DMA_CHANNEL_1    9
#define STM32_IRQ_DMA_CHANNEL_2_3 10
#define STM32_IRQ_DMA_CHANNEL_4_7 11
#define STM32_IRQ_ADC_COMP        12
#define STM32_IRQ_TIM1_BRK_UP_TRG 13
#define STM32_IRQ_TIM1_CC         14
#define STM32_IRQ_TIM2            15
#define STM32_IRQ_TIM3            16
#define STM32_IRQ_TIM6_DAC        17
#define STM32_IRQ_TIM7            18
#define STM32_IRQ_TIM14           19
#define STM32_IRQ_TIM15           20
#define STM32_IRQ_TIM16           21
#define STM32_IRQ_TIM17           22
#define STM32_IRQ_I2C1            23
#define STM32_IRQ_I2C2            24
#define STM32_IRQ_SPI1            25
#define STM32_IRQ_SPI2            26
#define STM32_IRQ_USART1          27
#define STM32_IRQ_USART2          28
#define STM32_IRQ_USART3_4        29
#define STM32_IRQ_CEC_CAN         30
#define STM32_IRQ_USB             31
/* aliases for easier code sharing */
#define STM32_IRQ_COMP STM32_IRQ_ADC_COMP
#define STM32_IRQ_USB_LP STM32_IRQ_USB



/* Peripheral base addresses */
#define STM32_ADC1_BASE             0x40012400
#define STM32_ADC_BASE              0x40012700 /* STM32L15X only */

#define STM32_CEC_BASE              0x40007800 /* STM32F373 */
#define STM32_CRC_BASE              0x40023000
#define STM32_CRS_BASE              0x40006c00 /* STM32F0XX */
#define STM32_DAC_BASE              0x40007400

#define STM32_COMP_BASE             0x40010000

#define STM32_DBGMCU_BASE           0x40015800

#define STM32_DMA1_BASE             0x40020000
#define STM32_DMA2_BASE             0x40020400

#define STM32_EXTI_BASE             0x40010400

#define STM32_FLASH_REGS_BASE       0x40022000

#define STM32_GPIOA_BASE            0x48000000
#define STM32_GPIOB_BASE            0x48000400
#define STM32_GPIOC_BASE            0x48000800
#define STM32_GPIOD_BASE            0x48000C00
#define STM32_GPIOE_BASE            0x48001000
#define STM32_GPIOF_BASE            0x48001400
#define STM32_GPIOG_BASE            0x48001800 /* only for stm32l4x6 */
#define STM32_GPIOH_BASE            0x48001C00 /* only for stm32l4 */

#define STM32_I2C1_BASE             0x40005400
#define STM32_I2C2_BASE             0x40005800
#define STM32_I2C3_BASE             0x40005C00
#define STM32_I2C4_BASE             0x40006000

#define STM32_IWDG_BASE             0x40003000
#define STM32_LCD_BASE              0x40002400

#define STM32_OPTB_BASE             0x1FFFF800

#define STM32_PMSE_BASE             0x40013400
#define STM32_PWR_BASE              0x40007000

#define STM32_RCC_BASE              0x40021000

#define STM32_RI_BASE               0x40007C00 /* STM32L1xx only */
#define STM32_RNG_BASE              0x50060800 /* STM32L4 */
#define STM32_RTC_BASE              0x40002800

#define STM32_SPI1_BASE             0x40013000
#define STM32_SPI2_BASE             0x40003800
#define STM32_SPI3_BASE             0x40003c00 /* STM32F373, STM32L4, STM32F7 */

#define STM32_SYSCFG_BASE           0x40010000

#define STM32_TIM1_BASE             0x40012c00 /* STM32F373 */
#define STM32_TIM2_BASE             0x40000000
#define STM32_TIM3_BASE             0x40000400
#define STM32_TIM4_BASE             0x40000800
#define STM32_TIM5_BASE             0x40000c00 /* STM32F373 */
#define STM32_TIM6_BASE             0x40001000
#define STM32_TIM7_BASE             0x40001400
#define STM32_TIM12_BASE            0x40001800 /* STM32F373 */
#define STM32_TIM13_BASE            0x40001c00 /* STM32F373 */
#define STM32_TIM14_BASE            0x40002000 /* STM32F373 */
#define STM32_TIM15_BASE            0x40014000
#define STM32_TIM16_BASE            0x40014400
#define STM32_TIM17_BASE            0x40014800
#define STM32_TIM18_BASE            0x40009c00 /* STM32F373 only */
#define STM32_TIM19_BASE            0x40015c00 /* STM32F373 only */

#define STM32_UNIQUE_ID_BASE        0x1ffff7ac

#define STM32_USART1_BASE           0x40013800
#define STM32_USART2_BASE           0x40004400
#define STM32_USART3_BASE           0x40004800
#define STM32_USART4_BASE           0x40004c00
#define STM32_USART9_BASE           0x40008000 /* LPUART */

#define STM32_USB_CAN_SRAM_BASE     0x40006000
#define STM32_USB_FS_BASE           0x40005C00

#define STM32_WWDG_BASE             0x40002C00


#ifndef __ASSEMBLER__

/* Register definitions */

/* --- USART --- */
#define STM32_USART_CR1(base)      STM32_USART_REG(base, 0x00)
#define STM32_USART_CR1_UE		BIT(0)
#define STM32_USART_CR1_UESM            BIT(1)
#define STM32_USART_CR1_RE		BIT(2)
#define STM32_USART_CR1_TE		BIT(3)
#define STM32_USART_CR1_RXNEIE		BIT(5)
#define STM32_USART_CR1_TCIE		BIT(6)
#define STM32_USART_CR1_TXEIE		BIT(7)
#define STM32_USART_CR1_PS		BIT(9)
#define STM32_USART_CR1_PCE		BIT(10)
#define STM32_USART_CR1_M		BIT(12)
#define STM32_USART_CR1_OVER8		BIT(15)
#define STM32_USART_CR2(base)      STM32_USART_REG(base, 0x04)
#define STM32_USART_CR2_SWAP		BIT(15)
#define STM32_USART_CR3(base)      STM32_USART_REG(base, 0x08)
#define STM32_USART_CR3_EIE		BIT(0)
#define STM32_USART_CR3_DMAR		BIT(6)
#define STM32_USART_CR3_DMAT		BIT(7)
#define STM32_USART_CR3_ONEBIT		BIT(11)
#define STM32_USART_CR3_OVRDIS		BIT(12)
#define STM32_USART_CR3_WUS_START_BIT	(2 << 20)
#define STM32_USART_CR3_WUFIE		BIT(22)
#define STM32_USART_BRR(base)      STM32_USART_REG(base, 0x0C)
#define STM32_USART_GTPR(base)     STM32_USART_REG(base, 0x10)
#define STM32_USART_RTOR(base)     STM32_USART_REG(base, 0x14)
#define STM32_USART_RQR(base)      STM32_USART_REG(base, 0x18)
#define STM32_USART_ISR(base)      STM32_USART_REG(base, 0x1C)
#define STM32_USART_ICR(base)      STM32_USART_REG(base, 0x20)
#define STM32_USART_ICR_ORECF		BIT(3)
#define STM32_USART_ICR_TCCF		BIT(6)
#define STM32_USART_RDR(base)      STM32_USART_REG(base, 0x24)
#define STM32_USART_TDR(base)      STM32_USART_REG(base, 0x28)
#define STM32_USART_PRESC(base)    STM32_USART_REG(base, 0x2C)
/* register alias */
#define STM32_USART_SR(base)       STM32_USART_ISR(base)
#define STM32_USART_SR_ORE		BIT(3)
#define STM32_USART_SR_RXNE		BIT(5)
#define STM32_USART_SR_TC		BIT(6)
#define STM32_USART_SR_TXE		BIT(7)

/* --- GPIO --- */

#define STM32_GPIO_MODER(b)     REG32((b) + 0x00)
#define STM32_GPIO_OTYPER(b)    REG16((b) + 0x04)
#define STM32_GPIO_OSPEEDR(b)   REG32((b) + 0x08)
#define STM32_GPIO_PUPDR(b)     REG32((b) + 0x0C)
#define STM32_GPIO_IDR(b)       REG16((b) + 0x10)
#define STM32_GPIO_ODR(b)       REG16((b) + 0x14)
#define STM32_GPIO_BSRR(b)      REG32((b) + 0x18)
#define STM32_GPIO_LCKR(b)      REG32((b) + 0x1C)
#define STM32_GPIO_AFRL(b)      REG32((b) + 0x20)
#define STM32_GPIO_AFRH(b)      REG32((b) + 0x24)
#define STM32_GPIO_BRR(b)       REG32((b) + 0x28)
#define STM32_GPIO_ASCR(b)      REG32((b) + 0x2C) /* only for stm32l4 */

#define GPIO_ALT_F0		0x0
#define GPIO_ALT_F1		0x1
#define GPIO_ALT_F2		0x2
#define GPIO_ALT_F3		0x3
#define GPIO_ALT_F4		0x4
#define GPIO_ALT_F5		0x5
#define GPIO_ALT_F6		0x6
#define GPIO_ALT_F7		0x7
#define GPIO_ALT_F8		0x8
#define GPIO_ALT_F9		0x9
#define GPIO_ALT_FA		0xA
#define GPIO_ALT_FB		0xB
#define GPIO_ALT_FC		0xC
#define GPIO_ALT_FD		0xD
#define GPIO_ALT_FE		0xE
#define GPIO_ALT_FF		0xF

/* --- I2C --- */
#define STM32_I2C_CR1(n)            REG32(stm32_i2c_reg(n, 0x00))
#define STM32_I2C_CR1_PE            BIT(0)
#define STM32_I2C_CR1_TXIE          BIT(1)
#define STM32_I2C_CR1_RXIE          BIT(2)
#define STM32_I2C_CR1_ADDRIE        BIT(3)
#define STM32_I2C_CR1_NACKIE        BIT(4)
#define STM32_I2C_CR1_STOPIE        BIT(5)
#define STM32_I2C_CR1_ERRIE         BIT(7)
#define STM32_I2C_CR1_WUPEN         BIT(18)
#define STM32_I2C_CR2(n)            REG32(stm32_i2c_reg(n, 0x04))
#define STM32_I2C_CR2_RD_WRN        BIT(10)
#define STM32_I2C_CR2_START         BIT(13)
#define STM32_I2C_CR2_STOP          BIT(14)
#define STM32_I2C_CR2_NACK          BIT(15)
#define STM32_I2C_CR2_RELOAD        BIT(24)
#define STM32_I2C_CR2_AUTOEND       BIT(25)
#define STM32_I2C_OAR1(n)           REG32(stm32_i2c_reg(n, 0x08))
#define STM32_I2C_OAR2(n)           REG32(stm32_i2c_reg(n, 0x0C))
#define STM32_I2C_TIMINGR(n)        REG32(stm32_i2c_reg(n, 0x10))
#define STM32_I2C_TIMEOUTR(n)       REG32(stm32_i2c_reg(n, 0x14))
#define STM32_I2C_ISR(n)            REG32(stm32_i2c_reg(n, 0x18))
#define STM32_I2C_ISR_TXE           BIT(0)
#define STM32_I2C_ISR_TXIS          BIT(1)
#define STM32_I2C_ISR_RXNE          BIT(2)
#define STM32_I2C_ISR_ADDR          BIT(3)
#define STM32_I2C_ISR_NACK          BIT(4)
#define STM32_I2C_ISR_STOP          BIT(5)
#define STM32_I2C_ISR_TC            BIT(6)
#define STM32_I2C_ISR_TCR           BIT(7)
#define STM32_I2C_ISR_BERR          BIT(8)
#define STM32_I2C_ISR_ARLO          BIT(9)
#define STM32_I2C_ISR_OVR           BIT(10)
#define STM32_I2C_ISR_PECERR        BIT(11)
#define STM32_I2C_ISR_TIMEOUT       BIT(12)
#define STM32_I2C_ISR_ALERT         BIT(13)
#define STM32_I2C_ISR_BUSY          BIT(15)
#define STM32_I2C_ISR_DIR           BIT(16)
#define STM32_I2C_ISR_ADDCODE(isr)  (((isr) >> 16) & 0xfe)
#define STM32_I2C_ICR(n)            REG32(stm32_i2c_reg(n, 0x1C))
#define STM32_I2C_ICR_ADDRCF        BIT(3)
#define STM32_I2C_ICR_NACKCF        BIT(4)
#define STM32_I2C_ICR_STOPCF        BIT(5)
#define STM32_I2C_ICR_BERRCF        BIT(8)
#define STM32_I2C_ICR_ARLOCF        BIT(9)
#define STM32_I2C_ICR_OVRCF         BIT(10)
#define STM32_I2C_ICR_TIMEOUTCF     BIT(12)
#define STM32_I2C_ICR_ALL           0x3F38
#define STM32_I2C_PECR(n)           REG32(stm32_i2c_reg(n, 0x20))
#define STM32_I2C_RXDR(n)           REG32(stm32_i2c_reg(n, 0x24))
#define STM32_I2C_TXDR(n)           REG32(stm32_i2c_reg(n, 0x28))


/* --- Power / Reset / Clocks --- */
#define STM32_PWR_CR                REG32(STM32_PWR_BASE + 0x00)
#define STM32_PWD_PVD_LS_MASK       (0x07 << 5)
#define STM32_PWD_PVD_LS(n)         ((n & 0x07) << 5)
#define STM32_PWR_PVDE              BIT(4)

#define STM32_PWR_CSR               REG32(STM32_PWR_BASE + 0x04)

#define STM32_PWR_CSR_EWUP1         BIT(8)
#define STM32_PWR_CSR_EWUP2         BIT(9)
#define STM32_PWR_CSR_EWUP3         BIT(10)
#define STM32_PWR_CSR_EWUP4         BIT(11) /* STM32F0xx only */
#define STM32_PWR_CSR_EWUP5         BIT(12) /* STM32F0xx only */
#define STM32_PWR_CSR_EWUP6         BIT(13) /* STM32F0xx only */
#define STM32_PWR_CSR_EWUP7         BIT(14) /* STM32F0xx only */
#define STM32_PWR_CSR_EWUP8         BIT(15) /* STM32F0xx only */

#define STM32_CRS_CR                REG32(STM32_CRS_BASE + 0x00) /* STM32F0XX */
#define STM32_CRS_CR_SYNCOKIE           BIT(0)
#define STM32_CRS_CR_SYNCWARNIE         BIT(1)
#define STM32_CRS_CR_ERRIE              BIT(2)
#define STM32_CRS_CR_ESYNCIE            BIT(3)
#define STM32_CRS_CR_CEN                BIT(5)
#define STM32_CRS_CR_AUTOTRIMEN         BIT(6)
#define STM32_CRS_CR_SWSYNC             BIT(7)
#define STM32_CRS_CR_TRIM(n)		(((n) & 0x3f) << 8)

#define STM32_CRS_CFGR              REG32(STM32_CRS_BASE + 0x04) /* STM32F0XX */
#define STM32_CRS_CFGR_RELOAD(n)	(((n) & 0xffff) << 0)
#define STM32_CRS_CFGR_FELIM(n)		(((n) & 0xff) << 16)
#define STM32_CRS_CFGR_SYNCDIV(n)	(((n) & 7) << 24)
#define STM32_CRS_CFGR_SYNCSRC(n)	(((n) & 3) << 28)
#define STM32_CRS_CFGR_SYNCPOL		BIT(31)

#define STM32_CRS_ISR               REG32(STM32_CRS_BASE + 0x08) /* STM32F0XX */
#define STM32_CRS_ISR_SYNCOKF		BIT(0)
#define STM32_CRS_ISR_SYNCWARNF		BIT(1)
#define STM32_CRS_ISR_ERRF		BIT(2)
#define STM32_CRS_ISR_ESYNCF		BIT(3)
#define STM32_CRS_ISR_SYNCERR		BIT(8)
#define STM32_CRS_ISR_SYNCMISS		BIT(9)
#define STM32_CRS_ISR_TRIMOVF		BIT(10)
#define STM32_CRS_ISR_FEDIR		BIT(15)
#define STM32_CRS_ISR_FECAP		(0xffff << 16)

#define STM32_CRS_ICR               REG32(STM32_CRS_BASE + 0x0c) /* STM32F0XX */
#define STM32_CRS_ICR_SYNCOKC		BIT(0)
#define STM32_CRS_ICR_SYNCWARINC	BIT(1)
#define STM32_CRS_ICR_ERRC		BIT(2)
#define STM32_CRS_ICR_ESYNCC		BIT(3)

#define STM32_RCC_CR                REG32(STM32_RCC_BASE + 0x00)
#define STM32_RCC_CFGR              REG32(STM32_RCC_BASE + 0x04)
#define STM32_RCC_CIR               REG32(STM32_RCC_BASE + 0x08)
#define STM32_RCC_APB2RSTR          REG32(STM32_RCC_BASE + 0x0c)
#define STM32_RCC_APB1RSTR          REG32(STM32_RCC_BASE + 0x10)
#define STM32_RCC_AHBENR            REG32(STM32_RCC_BASE + 0x14)
#define STM32_RCC_APB2ENR           REG32(STM32_RCC_BASE + 0x18)
#define STM32_RCC_APB2ENR_ADCEN     BIT(9) /* STM32F3/F0 */
#define STM32_RCC_APB2ENR_TIM16EN   BIT(17)
#define STM32_RCC_APB2ENR_TIM17EN   BIT(18)
#define STM32_RCC_DBGMCUEN          BIT(22)
#define STM32_RCC_SYSCFGEN          BIT(0)

#define STM32_RCC_APB1ENR           REG32(STM32_RCC_BASE + 0x1c)
#define STM32_RCC_DACEN                 BIT(29)
#define STM32_RCC_PWREN                 BIT(28)

#define STM32_RCC_BDCR              REG32(STM32_RCC_BASE + 0x20)
#define STM32_RCC_CSR               REG32(STM32_RCC_BASE + 0x24)
/* STM32F373 */
#define STM32_RCC_CFGR2             REG32(STM32_RCC_BASE + 0x2c)
/* STM32F0XX and STM32F373 */
#define STM32_RCC_CFGR3             REG32(STM32_RCC_BASE + 0x30)
#define STM32_RCC_CR2               REG32(STM32_RCC_BASE + 0x34) /* STM32F0XX */

#define STM32_RCC_HB_DMA1		BIT(0)
/* STM32F373 */
#define STM32_RCC_HB_DMA2		BIT(1)
#define STM32_RCC_PB2_TIM1		BIT(11) /* Except STM32F373 */
#define STM32_RCC_PB2_TIM15		BIT(16) /* STM32F0XX and STM32F373 */
#define STM32_RCC_PB2_TIM16		BIT(17) /* STM32F0XX and STM32F373 */
#define STM32_RCC_PB2_TIM17		BIT(18) /* STM32F0XX and STM32F373 */
#define STM32_RCC_PB2_TIM19		BIT(19) /* STM32F373 */
#define STM32_RCC_PB2_PMAD		BIT(11) /* STM32TS */
#define STM32_RCC_PB2_PMSE		BIT(13) /* STM32TS */
#define STM32_RCC_PB1_TIM12		BIT(6)  /* STM32F373 */
#define STM32_RCC_PB1_TIM13		BIT(7)  /* STM32F373 */
#define STM32_RCC_PB1_TIM14		BIT(8)  /* STM32F0XX and STM32F373 */
#define STM32_RCC_PB1_TIM18		BIT(9)  /* STM32F373 */
#define STM32_RCC_PB1_USB		BIT(23)
#define STM32_RCC_PB1_CRS		BIT(27)

#define STM32_SYSCFG_CFGR1          REG32(STM32_SYSCFG_BASE + 0x00)
#define STM32_SYSCFG_EXTICR(n)      REG32(STM32_SYSCFG_BASE + 8 + 4 * (n))
#define STM32_SYSCFG_CFGR2          REG32(STM32_SYSCFG_BASE + 0x18)


/* Peripheral bits for RCC_APB/AHB and DBGMCU regs */
#define STM32_RCC_PB2_USART1		BIT(14)

/* Reset causes definitions */
/* Reset causes in RCC CSR register */
#define STM32_RCC_RESET_CAUSE STM32_RCC_CSR
#define  RESET_CAUSE_WDG                0x60000000
#define  RESET_CAUSE_SFT                0x10000000
#define  RESET_CAUSE_POR                0x08000000
#define  RESET_CAUSE_PIN                0x04000000
#define  RESET_CAUSE_OTHER              0xfe000000
#define  RESET_CAUSE_RMVF               0x01000000
/* Power cause in PWR CSR register */
#define STM32_PWR_RESET_CAUSE           STM32_PWR_CSR
#define STM32_PWR_RESET_CAUSE_CLR       STM32_PWR_CR
#define  RESET_CAUSE_SBF                0x00000002
#define  RESET_CAUSE_SBF_CLR            0x00000004

/* --- Watchdogs --- */

/* --- Real-Time Clock --- */
#define STM32_RTC_TR                REG32(STM32_RTC_BASE + 0x00)
#define STM32_RTC_DR                REG32(STM32_RTC_BASE + 0x04)
#define STM32_RTC_CR                REG32(STM32_RTC_BASE + 0x08)
#define STM32_RTC_CR_BYPSHAD        BIT(5)
#define STM32_RTC_CR_ALRAE          BIT(8)
#define STM32_RTC_CR_ALRAIE         BIT(12)
#define STM32_RTC_ISR               REG32(STM32_RTC_BASE + 0x0C)
#define STM32_RTC_ISR_ALRAWF        BIT(0)
#define STM32_RTC_ISR_RSF           BIT(5)
#define STM32_RTC_ISR_INITF         BIT(6)
#define STM32_RTC_ISR_INIT          BIT(7)
#define STM32_RTC_ISR_ALRAF         BIT(8)
#define STM32_RTC_PRER              REG32(STM32_RTC_BASE + 0x10)
#define STM32_RTC_PRER_A_MASK       (0x7f << 16)
#define STM32_RTC_PRER_S_MASK       (0x7fff << 0)
#define STM32_RTC_WUTR              REG32(STM32_RTC_BASE + 0x14)
#define STM32_RTC_CALIBR            REG32(STM32_RTC_BASE + 0x18)
#define STM32_RTC_ALRMAR            REG32(STM32_RTC_BASE + 0x1C)
#define STM32_RTC_ALRMBR            REG32(STM32_RTC_BASE + 0x20)
#define STM32_RTC_WPR               REG32(STM32_RTC_BASE + 0x24)
#define STM32_RTC_SSR               REG32(STM32_RTC_BASE + 0x28)
#define STM32_RTC_TSTR              REG32(STM32_RTC_BASE + 0x30)
#define STM32_RTC_TSDR              REG32(STM32_RTC_BASE + 0x34)
#define STM32_RTC_TAFCR             REG32(STM32_RTC_BASE + 0x40)
#define STM32_RTC_ALRMASSR          REG32(STM32_RTC_BASE + 0x44)
#define STM32_RTC_BACKUP(n)         REG32(STM32_RTC_BASE + 0x50 + 4 * (n))

#define STM32_BKP_DATA(n)           STM32_RTC_BACKUP(n)
#define STM32_BKP_BYTES             20

/* --- SPI --- */

/* The SPI controller registers */
struct stm32_spi_regs {
	uint16_t cr1;
	uint16_t _pad0;
	uint16_t cr2;
	uint16_t _pad1;
	unsigned sr;
	uint8_t dr;
	uint8_t _pad2;
	uint16_t _pad3;
	unsigned crcpr;
	unsigned rxcrcr;
	unsigned txcrcr;
	unsigned i2scfgr;	/* STM32L only */
	unsigned i2spr;		/* STM32L only */
};
/* Must be volatile, or compiler optimizes out repeated accesses */
typedef volatile struct stm32_spi_regs stm32_spi_regs_t;

#define STM32_SPI1_REGS ((stm32_spi_regs_t *)STM32_SPI1_BASE)
#define STM32_SPI2_REGS ((stm32_spi_regs_t *)STM32_SPI2_BASE)
#define STM32_SPI3_REGS ((stm32_spi_regs_t *)STM32_SPI3_BASE)
#define STM32_SPI4_REGS ((stm32_spi_regs_t *)STM32_SPI4_BASE)

#define STM32_SPI_CR1_BIDIMODE		BIT(15)
#define STM32_SPI_CR1_BIDIOE		BIT(14)
#define STM32_SPI_CR1_CRCEN		BIT(13)
#define STM32_SPI_CR1_SSM		BIT(9)
#define STM32_SPI_CR1_SSI		BIT(8)
#define STM32_SPI_CR1_LSBFIRST		BIT(7)
#define STM32_SPI_CR1_SPE		BIT(6)
#define STM32_SPI_CR1_BR_DIV64R		(5 << 3)
#define STM32_SPI_CR1_BR_DIV4R		BIT(3)
#define STM32_SPI_CR1_MSTR		BIT(2)
#define STM32_SPI_CR1_CPOL		BIT(1)
#define STM32_SPI_CR1_CPHA		BIT(0)
#define STM32_SPI_CR2_FRXTH		BIT(12)
#define STM32_SPI_CR2_DATASIZE(n)	(((n) - 1) << 8)
#define STM32_SPI_CR2_TXEIE		BIT(7)
#define STM32_SPI_CR2_RXNEIE		BIT(6)
#define STM32_SPI_CR2_NSSP		BIT(3)
#define STM32_SPI_CR2_SSOE		BIT(2)
#define STM32_SPI_CR2_TXDMAEN		BIT(1)
#define STM32_SPI_CR2_RXDMAEN		BIT(0)

#define STM32_SPI_SR_RXNE		BIT(0)
#define STM32_SPI_SR_TXE		BIT(1)
#define STM32_SPI_SR_CRCERR		BIT(4)
#define STM32_SPI_SR_BSY		BIT(7)
#define STM32_SPI_SR_FRLVL		(3 << 9)
#define STM32_SPI_SR_FTLVL		(3 << 11)
/* --- Debug --- */
#define STM32_DBGMCU_APB1FZ         REG32(STM32_DBGMCU_BASE + 0x08)
#define STM32_DBGMCU_APB2FZ         REG32(STM32_DBGMCU_BASE + 0x0C)

/* --- Flash --- */
#define STM32_FLASH_ACR             REG32(STM32_FLASH_REGS_BASE + 0x00)
#define STM32_FLASH_ACR_LATENCY_SHIFT (0)
#define STM32_FLASH_ACR_LATENCY_MASK  (7 << STM32_FLASH_ACR_LATENCY_SHIFT)
#define STM32_FLASH_ACR_LATENCY     BIT(0)
#define STM32_FLASH_ACR_PRFTEN      BIT(4)
#define STM32_FLASH_KEYR            REG32(STM32_FLASH_REGS_BASE + 0x04)
#define  FLASH_KEYR_KEY1                0x45670123
#define  FLASH_KEYR_KEY2                0xCDEF89AB

#define STM32_FLASH_OPTKEYR         REG32(STM32_FLASH_REGS_BASE + 0x08)
#define  FLASH_OPTKEYR_KEY1             FLASH_KEYR_KEY1
#define  FLASH_OPTKEYR_KEY2             FLASH_KEYR_KEY2
#define STM32_FLASH_SR              REG32(STM32_FLASH_REGS_BASE + 0x0c)
#define  FLASH_SR_BUSY                  BIT(0)
#define  FLASH_SR_PGERR                 BIT(2)
#define  FLASH_SR_WRPRTERR              BIT(4)
#define  FLASH_SR_ALL_ERR \
	(FLASH_SR_PGERR | FLASH_SR_WRPRTERR)
#define  FLASH_SR_EOP                   BIT(5)
#define STM32_FLASH_CR              REG32(STM32_FLASH_REGS_BASE + 0x10)
#define  FLASH_CR_PG                    BIT(0)
#define  FLASH_CR_PER                   BIT(1)
#define  FLASH_CR_OPTPG                 BIT(4)
#define  FLASH_CR_OPTER                 BIT(5)
#define  FLASH_CR_STRT                  BIT(6)
#define  FLASH_CR_LOCK                  BIT(7)
#define  FLASH_CR_OPTWRE                BIT(9)
#define  FLASH_CR_OBL_LAUNCH            BIT(13)
#define STM32_FLASH_OPT_LOCKED      (!(STM32_FLASH_CR & FLASH_CR_OPTWRE))
#define STM32_FLASH_AR              REG32(STM32_FLASH_REGS_BASE + 0x14)
#define STM32_FLASH_OBR             REG32(STM32_FLASH_REGS_BASE + 0x1c)
#define STM32_FLASH_OBR_RDP_MASK        (3 << 1)
#define STM32_FLASH_WRPR            REG32(STM32_FLASH_REGS_BASE + 0x20)

#define STM32_OPTB_RDP_OFF              0x00
#define STM32_OPTB_USER_OFF             0x02
#define STM32_OPTB_WRP_OFF(n)           (0x08 + (n&3) * 2)
#define STM32_OPTB_WRP01                0x08
#define STM32_OPTB_WRP23                0x0c

#define STM32_OPTB_COMPL_SHIFT      8

/* --- External Interrupts --- */
#define STM32_EXTI_IMR              REG32(STM32_EXTI_BASE + 0x00)
#define STM32_EXTI_EMR              REG32(STM32_EXTI_BASE + 0x04)
#define STM32_EXTI_RTSR             REG32(STM32_EXTI_BASE + 0x08)
#define STM32_EXTI_FTSR             REG32(STM32_EXTI_BASE + 0x0c)
#define STM32_EXTI_SWIER            REG32(STM32_EXTI_BASE + 0x10)
#define STM32_EXTI_PR               REG32(STM32_EXTI_BASE + 0x14)

#define EXTI_PVD_EVENT              BIT(16)
#define EXTI_RTC_ALR_EVENT          BIT(17)
#define EXTI_COMP2_EVENT            BIT(22)

/* --- ADC --- */
#define STM32_ADC_ISR              REG32(STM32_ADC1_BASE + 0x00)
#define STM32_ADC_ISR_ADRDY        BIT(0)
#define STM32_ADC_IER              REG32(STM32_ADC1_BASE + 0x04)
#define STM32_ADC_IER_AWDIE        BIT(7)
#define STM32_ADC_IER_OVRIE        BIT(4)
#define STM32_ADC_IER_EOSEQIE      BIT(3)
#define STM32_ADC_IER_EOCIE        BIT(2)
#define STM32_ADC_IER_EOSMPIE      BIT(1)
#define STM32_ADC_IER_ADRDYIE      BIT(0)

#define STM32_ADC_CR               REG32(STM32_ADC1_BASE + 0x08)
#define STM32_ADC_CR_ADEN          BIT(0)
#define STM32_ADC_CR_ADDIS         BIT(1)
#define STM32_ADC_CR_ADCAL         BIT(31)
#define STM32_ADC_CFGR1            REG32(STM32_ADC1_BASE + 0x0C)
/* Analog watchdog channel selection */
#define STM32_ADC_CFGR1_AWDCH_MASK (0x1f << 26)
#define STM32_ADC_CFGR1_AWDEN      BIT(23)
#define STM32_ADC_CFGR1_AWDSGL     BIT(22)
/* Selects single vs continuous */
#define STM32_ADC_CFGR1_CONT       BIT(13)
/* Selects ADC_DR overwrite vs preserve */
#define STM32_ADC_CFGR1_OVRMOD     BIT(12)
/* External trigger polarity selection */
#define STM32_ADC_CFGR1_EXTEN_DIS  (0 << 10)
#define STM32_ADC_CFGR1_EXTEN_RISE (1 << 10)
#define STM32_ADC_CFGR1_EXTEN_FALL (2 << 10)
#define STM32_ADC_CFGR1_EXTEN_BOTH (3 << 10)
#define STM32_ADC_CFGR1_EXTEN_MASK (3 << 10)
/* External trigger selection */
#define STM32_ADC_CFGR1_TRG0	   (0 << 6)
#define STM32_ADC_CFGR1_TRG1	   (1 << 6)
#define STM32_ADC_CFGR1_TRG2	   (2 << 6)
#define STM32_ADC_CFGR1_TRG3	   (3 << 6)
#define STM32_ADC_CFGR1_TRG4	   (4 << 6)
#define STM32_ADC_CFGR1_TRG5	   (5 << 6)
#define STM32_ADC_CFGR1_TRG6	   (6 << 6)
#define STM32_ADC_CFGR1_TRG7	   (7 << 6)
#define STM32_ADC_CFGR1_TRG_MASK   (7 << 6)
/* Selects circular vs one-shot */
#define STM32_ADC_CFGR1_DMACFG     BIT(1)
#define STM32_ADC_CFGR1_DMAEN      BIT(0)
#define STM32_ADC_CFGR2            REG32(STM32_ADC1_BASE + 0x10)
/* Sampling time selection - 1.5 ADC cycles min, 239.5 cycles max */
#define STM32_ADC_SMPR             REG32(STM32_ADC1_BASE + 0x14)
/* Macro to convert enum stm32_adc_smpr to SMP bits of the ADC_SMPR register */
#define STM32_ADC_SMPR_SMP(s)      ((s) - 1)
#define STM32_ADC_TR               REG32(STM32_ADC1_BASE + 0x20)
#define STM32_ADC_CHSELR           REG32(STM32_ADC1_BASE + 0x28)
#define STM32_ADC_DR               REG32(STM32_ADC1_BASE + 0x40)
#define STM32_ADC_CCR              REG32(STM32_ADC1_BASE + 0x308)

/* --- Comparators --- */
#define STM32_COMP_CSR              REG32(STM32_COMP_BASE + 0x1C)

#define STM32_COMP_CMP2LOCK            BIT(31)
#define STM32_COMP_CMP2OUT             BIT(30)
#define STM32_COMP_CMP2HYST_HI         (3 << 28)
#define STM32_COMP_CMP2HYST_MED        (2 << 28)
#define STM32_COMP_CMP2HYST_LOW        (1 << 28)
#define STM32_COMP_CMP2HYST_NO         (0 << 28)
#define STM32_COMP_CMP2POL             BIT(27)

#define STM32_COMP_CMP2OUTSEL_TIM3_OCR (7 << 24)
#define STM32_COMP_CMP2OUTSEL_TIM3_IC1 (6 << 24)
#define STM32_COMP_CMP2OUTSEL_TIM2_OCR (5 << 24)
#define STM32_COMP_CMP2OUTSEL_TIM2_IC4 (4 << 24)
#define STM32_COMP_CMP2OUTSEL_TIM1_OCR (3 << 24)
#define STM32_COMP_CMP2OUTSEL_TIM1_IC1 (2 << 24)
#define STM32_COMP_CMP2OUTSEL_TIM1_BRK (1 << 24)
#define STM32_COMP_CMP2OUTSEL_NONE     (0 << 24)
#define STM32_COMP_WNDWEN              BIT(23)

#define STM32_COMP_CMP2INSEL_MASK      (7 << 20)
#define STM32_COMP_CMP2INSEL_INM7      (6 << 20) /* STM32F373 only */
#define STM32_COMP_CMP2INSEL_INM6      (6 << 20)
#define STM32_COMP_CMP2INSEL_INM5      (5 << 20)
#define STM32_COMP_CMP2INSEL_INM4      (4 << 20)
#define STM32_COMP_CMP2INSEL_VREF      (3 << 20)
#define STM32_COMP_CMP2INSEL_VREF34    (2 << 20)
#define STM32_COMP_CMP2INSEL_VREF12    (1 << 20)
#define STM32_COMP_CMP2INSEL_VREF14    (0 << 20)

#define STM32_COMP_CMP2MODE_VLSPEED    (3 << 18)
#define STM32_COMP_CMP2MODE_LSPEED     (2 << 18)
#define STM32_COMP_CMP2MODE_MSPEED     (1 << 18)
#define STM32_COMP_CMP2MODE_HSPEED     (0 << 18)
#define STM32_COMP_CMP2EN              BIT(16)

#define STM32_COMP_CMP1LOCK            BIT(15)
#define STM32_COMP_CMP1OUT             BIT(14)
#define STM32_COMP_CMP1HYST_HI         (3 << 12)
#define STM32_COMP_CMP1HYST_MED        (2 << 12)
#define STM32_COMP_CMP1HYST_LOW        (1 << 12)
#define STM32_COMP_CMP1HYST_NO         (0 << 12)
#define STM32_COMP_CMP1POL             BIT(11)

#define STM32_COMP_CMP1OUTSEL_TIM3_OCR (7 << 8)
#define STM32_COMP_CMP1OUTSEL_TIM3_IC1 (6 << 8)
#define STM32_COMP_CMP1OUTSEL_TIM2_OCR (5 << 8)
#define STM32_COMP_CMP1OUTSEL_TIM2_IC4 (4 << 8)
#define STM32_COMP_CMP1OUTSEL_TIM1_OCR (3 << 8)
#define STM32_COMP_CMP1OUTSEL_TIM1_IC1 (2 << 8)
#define STM32_COMP_CMP1OUTSEL_TIM1_BRK (1 << 8)
#define STM32_COMP_CMP1OUTSEL_NONE     (0 << 8)

#define STM32_COMP_CMP1INSEL_MASK      (7 << 4)
#define STM32_COMP_CMP1INSEL_INM7      (7 << 4) /* STM32F373 only */
#define STM32_COMP_CMP1INSEL_INM6      (6 << 4)
#define STM32_COMP_CMP1INSEL_INM5      (5 << 4)
#define STM32_COMP_CMP1INSEL_INM4      (4 << 4)
#define STM32_COMP_CMP1INSEL_VREF      (3 << 4)
#define STM32_COMP_CMP1INSEL_VREF34    (2 << 4)
#define STM32_COMP_CMP1INSEL_VREF12    (1 << 4)
#define STM32_COMP_CMP1INSEL_VREF14    (0 << 4)

#define STM32_COMP_CMP1MODE_VLSPEED    (3 << 2)
#define STM32_COMP_CMP1MODE_LSPEED     (2 << 2)
#define STM32_COMP_CMP1MODE_MSPEED     (1 << 2)
#define STM32_COMP_CMP1MODE_HSPEED     (0 << 2)
#define STM32_COMP_CMP1SW1             BIT(1)
#define STM32_COMP_CMP1EN              BIT(0)


/* --- DMA --- */

/*
 * Available DMA channels, numbered from 0.
 *
 * Note: The STM datasheet tends to number things from 1. We should ask
 * the European elevator engineers to talk to MCU engineer counterparts
 * about this.  This means that if the datasheet refers to channel n,
 * you need to use STM32_DMAC_CHn (=n-1) in the code.
 *
 * Also note that channels are overloaded; obviously you can only use one
 * function on each channel at a time.
 */
enum dma_channel {
	/* Channel numbers */
	STM32_DMAC_CH1 = 0,
	STM32_DMAC_CH2 = 1,
	STM32_DMAC_CH3 = 2,
	STM32_DMAC_CH4 = 3,
	STM32_DMAC_CH5 = 4,
	STM32_DMAC_CH6 = 5,
	STM32_DMAC_CH7 = 6,
	/*
	 * Skip CH8, it should belong to DMA engine 1.
	 * Sharing code with STM32s that have 16 engines will be easier.
	 */
	STM32_DMAC_CH9 = 8,
	STM32_DMAC_CH10 = 9,
	STM32_DMAC_CH11 = 10,
	STM32_DMAC_CH12 = 11,
	STM32_DMAC_CH13 = 12,
	STM32_DMAC_CH14 = 13,

	/* Channel functions */
	STM32_DMAC_ADC = STM32_DMAC_CH1,
	STM32_DMAC_SPI1_RX = STM32_DMAC_CH2,
	STM32_DMAC_SPI1_TX = STM32_DMAC_CH3,
	STM32_DMAC_DAC_CH1 = STM32_DMAC_CH2,
	STM32_DMAC_DAC_CH2 = STM32_DMAC_CH3,
	STM32_DMAC_I2C2_TX = STM32_DMAC_CH4,
	STM32_DMAC_I2C2_RX = STM32_DMAC_CH5,
	STM32_DMAC_USART1_TX = STM32_DMAC_CH4,
	STM32_DMAC_USART1_RX = STM32_DMAC_CH5,
#if !defined(CHIP_VARIANT_STM32F03X) && !defined(CHIP_VARIANT_STM32F05X)
	STM32_DMAC_USART2_RX = STM32_DMAC_CH6,
	STM32_DMAC_USART2_TX = STM32_DMAC_CH7,
	STM32_DMAC_I2C1_TX = STM32_DMAC_CH6,
	STM32_DMAC_I2C1_RX = STM32_DMAC_CH7,
	STM32_DMAC_PMSE_ROW = STM32_DMAC_CH6,
	STM32_DMAC_PMSE_COL = STM32_DMAC_CH7,
	STM32_DMAC_SPI2_RX = STM32_DMAC_CH6,
	STM32_DMAC_SPI2_TX = STM32_DMAC_CH7,

	/* Only DMA1 (with 7 channels) is present on STM32L151x */
	STM32_DMAC_COUNT = 7,

#else /* stm32f03x and stm32f05x have only 5 channels */
	STM32_DMAC_COUNT = 5,
#endif
};

#define STM32_DMAC_PER_CTLR 8

/* Registers for a single channel of the DMA controller */
struct stm32_dma_chan {
	uint32_t	ccr;		/* Control */
	uint32_t	cndtr;		/* Number of data to transfer */
	uint32_t	cpar;		/* Peripheral address */
	uint32_t	cmar;		/* Memory address */
	uint32_t	reserved;
};

/* Always use stm32_dma_chan_t so volatile keyword is included! */
typedef volatile struct stm32_dma_chan stm32_dma_chan_t;

/* Common code and header file must use this */
typedef stm32_dma_chan_t dma_chan_t;

/* Registers for the DMA controller */
struct stm32_dma_regs {
	uint32_t	isr;
	uint32_t	ifcr;
	stm32_dma_chan_t chan[STM32_DMAC_COUNT];
};

/* Always use stm32_dma_regs_t so volatile keyword is included! */
typedef volatile struct stm32_dma_regs stm32_dma_regs_t;

#define STM32_DMA1_REGS ((stm32_dma_regs_t *)STM32_DMA1_BASE)


#define STM32_DMA_CCR_CHANNEL(channel)		 (0)

#ifdef CHIP_VARIANT_STM32F09X
#define STM32_DMA2_REGS ((stm32_dma_regs_t *)STM32_DMA2_BASE)
#define STM32_DMA_REGS(channel) \
	((channel) < STM32_DMAC_PER_CTLR ? STM32_DMA1_REGS : STM32_DMA2_REGS)
#define STM32_DMA_CSELR(channel) \
	REG32(((channel) < STM32_DMAC_PER_CTLR ? \
			STM32_DMA1_BASE : STM32_DMA2_BASE)  + 0xA8)
#else
#define STM32_DMA_REGS(channel) STM32_DMA1_REGS
#endif

/* Bits for DMA controller regs (isr and ifcr) */
#define STM32_DMA_CH_OFFSET(channel)   (4 * ((channel) % STM32_DMAC_PER_CTLR))
#define STM32_DMA_ISR_MASK(channel, mask) \
	((mask) << STM32_DMA_CH_OFFSET(channel))
#define STM32_DMA_ISR_GIF(channel)	STM32_DMA_ISR_MASK(channel, BIT(0))
#define STM32_DMA_ISR_TCIF(channel)	STM32_DMA_ISR_MASK(channel, BIT(1))
#define STM32_DMA_ISR_HTIF(channel)	STM32_DMA_ISR_MASK(channel, BIT(2))
#define STM32_DMA_ISR_TEIF(channel)	STM32_DMA_ISR_MASK(channel, BIT(3))
#define STM32_DMA_ISR_ALL(channel)	STM32_DMA_ISR_MASK(channel, 0x0f)

#define STM32_DMA_GIF                   BIT(0)
#define STM32_DMA_TCIF                  BIT(1)
#define STM32_DMA_HTIF                  BIT(2)
#define STM32_DMA_TEIF                  BIT(3)
#define STM32_DMA_ALL                   0xf

#define STM32_DMA_GET_ISR(channel)      \
	((STM32_DMA_REGS(channel)->isr >> STM32_DMA_CH_OFFSET(channel)) \
	& STM32_DMA_ALL)
#define STM32_DMA_SET_ISR(channel, val) \
	(STM32_DMA_REGS(channel)->isr = \
	((STM32_DMA_REGS(channel)->isr & \
	~(STM32_DMA_ALL << STM32_DMA_CH_OFFSET(channel))) | \
	(((val) & STM32_DMA_ALL) << STM32_DMA_CH_OFFSET(channel))))
#define STM32_DMA_GET_IFCR(channel)      \
	((STM32_DMA_REGS(channel)->ifcr >> STM32_DMA_CH_OFFSET(channel)) \
	& STM32_DMA_ALL)
#define STM32_DMA_SET_IFCR(channel, val) \
	(STM32_DMA_REGS(channel)->ifcr = \
	((STM32_DMA_REGS(channel)->ifcr & \
	~(STM32_DMA_ALL << STM32_DMA_CH_OFFSET(channel))) | \
	(((val) & STM32_DMA_ALL) << STM32_DMA_CH_OFFSET(channel))))


/* Bits for DMA channel regs */
#define STM32_DMA_CCR_EN		BIT(0)
#define STM32_DMA_CCR_TCIE		BIT(1)
#define STM32_DMA_CCR_HTIE		BIT(2)
#define STM32_DMA_CCR_TEIE		BIT(3)
#define STM32_DMA_CCR_DIR		BIT(4)
#define STM32_DMA_CCR_CIRC		BIT(5)
#define STM32_DMA_CCR_PINC		BIT(6)
#define STM32_DMA_CCR_MINC		BIT(7)
#define STM32_DMA_CCR_PSIZE_8_BIT	(0 << 8)
#define STM32_DMA_CCR_PSIZE_16_BIT	(1 << 8)
#define STM32_DMA_CCR_PSIZE_32_BIT	(2 << 8)
#define STM32_DMA_CCR_MSIZE_8_BIT	(0 << 10)
#define STM32_DMA_CCR_MSIZE_16_BIT	(1 << 10)
#define STM32_DMA_CCR_MSIZE_32_BIT	(2 << 10)
#define STM32_DMA_CCR_PL_LOW		(0 << 12)
#define STM32_DMA_CCR_PL_MEDIUM		(1 << 12)
#define STM32_DMA_CCR_PL_HIGH		(2 << 12)
#define STM32_DMA_CCR_PL_VERY_HIGH	(3 << 12)
#define STM32_DMA_CCR_MEM2MEM		BIT(14)


/* --- CRC --- */
#define STM32_CRC_DR                REG32(STM32_CRC_BASE + 0x0)
#define STM32_CRC_DR32              REG32(STM32_CRC_BASE + 0x0)
#define STM32_CRC_DR16              REG16(STM32_CRC_BASE + 0x0)
#define STM32_CRC_DR8               REG8(STM32_CRC_BASE + 0x0)

#define STM32_CRC_IDR               REG32(STM32_CRC_BASE + 0x4)
#define STM32_CRC_CR                REG32(STM32_CRC_BASE + 0x8)
#define STM32_CRC_INIT              REG32(STM32_CRC_BASE + 0x10)
#define STM32_CRC_POL               REG32(STM32_CRC_BASE + 0x14)

#define STM32_CRC_CR_RESET          BIT(0)
#define STM32_CRC_CR_POLYSIZE_32    (0 << 3)
#define STM32_CRC_CR_POLYSIZE_16    (1 << 3)
#define STM32_CRC_CR_POLYSIZE_8     (2 << 3)
#define STM32_CRC_CR_POLYSIZE_7     (3 << 3)
#define STM32_CRC_CR_REV_IN_BYTE    (1 << 5)
#define STM32_CRC_CR_REV_IN_HWORD   (2 << 5)
#define STM32_CRC_CR_REV_IN_WORD    (3 << 5)
#define STM32_CRC_CR_REV_OUT        BIT(7)

#define EP_MASK     0x0F0F
#define EP_TX_DTOG  0x0040
#define EP_TX_MASK  0x0030
#define EP_TX_VALID 0x0030
#define EP_TX_NAK   0x0020
#define EP_TX_STALL 0x0010
#define EP_TX_DISAB 0x0000
#define EP_RX_DTOG  0x4000
#define EP_RX_MASK  0x3000
#define EP_RX_VALID 0x3000
#define EP_RX_NAK   0x2000
#define EP_RX_STALL 0x1000
#define EP_RX_DISAB 0x0000

#define EP_STATUS_OUT 0x0100

#define EP_TX_RX_MASK (EP_TX_MASK | EP_RX_MASK)
#define EP_TX_RX_VALID (EP_TX_VALID | EP_RX_VALID)

#define STM32_TOGGLE_EP(n, mask, val, flags) \
	STM32_USB_EP(n) = (((STM32_USB_EP(n) & (EP_MASK | (mask))) \
			^ (val)) | (flags))

/* --- TRNG --- */
#define STM32_RNG_CR                REG32(STM32_RNG_BASE + 0x0)
#define STM32_RNG_CR_RNGEN          BIT(2)
#define STM32_RNG_CR_IE             BIT(3)
#define STM32_RNG_CR_CED            BIT(5)
#define STM32_RNG_SR                REG32(STM32_RNG_BASE + 0x4)
#define STM32_RNG_SR_DRDY           BIT(0)
#define STM32_RNG_DR                REG32(STM32_RNG_BASE + 0x8)

/* --- AXI interconnect --- */

/* STM32H7: AXI_TARGx_FN_MOD exists for masters x = 1, 2 and 7 */
#define STM32_AXI_TARG_FN_MOD(x)    REG32(STM32_GPV_BASE + 0x1108 + \
					  0x1000 * (x))
#define  WRITE_ISS_OVERRIDE         BIT(1)
#define  READ_ISS_OVERRIDE          BIT(0)

/* --- MISC --- */
#define STM32_UNIQUE_ID_ADDRESS     REG32_ADDR(STM32_UNIQUE_ID_BASE)
#define STM32_UNIQUE_ID_LENGTH      (3 * 4)

#endif /* !__ASSEMBLER__ */