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stm32: Initial support for stm32f2 (#3001)

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Initial support for stm32f2 in general and STM32F207 in particular.

Boots up and communicates on STM32F207VC.

Signed-off-by: Boleslaw Ciesielski <combolek@users.noreply.github.com>
This commit is contained in:
combolek
2020-06-23 07:52:15 -07:00
committed by GitHub
parent a4c31bafb0
commit 7cab732ae9
12 changed files with 58653 additions and 6 deletions
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17
src/stm32/Kconfig
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@@ -22,6 +22,9 @@ choice
config MACH_STM32F103
bool "STM32F103"
select MACH_STM32F1
config MACH_STM32F207
bool "STM32F207"
select MACH_STM32F2
config MACH_STM32F405
bool "STM32F405"
select MACH_STM32F4
@@ -43,6 +46,8 @@ config MACH_STM32F0
bool
config MACH_STM32F1
bool
config MACH_STM32F2
bool
config MACH_STM32F4
bool
config HAVE_STM32_USBFS
@@ -51,7 +56,7 @@ config HAVE_STM32_USBFS
default n
config HAVE_STM32_USBOTG
bool
default y if MACH_STM32F4
default y if MACH_STM32F2 || MACH_STM32F4
default n
config MCU
@@ -59,6 +64,7 @@ config MCU
default "stm32f042x6" if MACH_STM32F042
default "stm32f070xb" if MACH_STM32F070
default "stm32f103xe" if MACH_STM32F103
default "stm32f207xx" if MACH_STM32F207
default "stm32f405xx" if MACH_STM32F405
default "stm32f407xx" if MACH_STM32F407
default "stm32f446xx" if MACH_STM32F446
@@ -68,6 +74,7 @@ config CLOCK_FREQ
default 48000000 if MACH_STM32F0
default 64000000 if MACH_STM32F103 && STM32_CLOCK_REF_INTERNAL
default 72000000 if MACH_STM32F103
default 120000000 if MACH_STM32F207
default 168000000 if MACH_STM32F405 || MACH_STM32F407
default 180000000 if MACH_STM32F446
@@ -76,6 +83,7 @@ config FLASH_SIZE
default 0x8000 if MACH_STM32F042
default 0x20000 if MACH_STM32F070
default 0x10000 if MACH_STM32F103 # Flash size of stm32f103x8 (64KiB)
default 0x40000 if MACH_STM32F2
default 0x80000 if MACH_STM32F4
config RAM_START
@@ -87,6 +95,7 @@ config RAM_SIZE
default 0x1800 if MACH_STM32F042
default 0x4000 if MACH_STM32F070
default 0x5000 if MACH_STM32F103 # Ram size of stm32f103x8 (20KiB)
default 0x20000 if MACH_STM32F207
default 0x20000 if MACH_STM32F4
config STACK_SIZE
@@ -94,19 +103,19 @@ config STACK_SIZE
default 512
choice
prompt "Bootloader offset" if MACH_STM32F407 || MACH_STM32F405 || MACH_STM32F103 || MACH_STM32F070
prompt "Bootloader offset" if MACH_STM32F207 || MACH_STM32F407 || MACH_STM32F405 || MACH_STM32F103 || MACH_STM32F070
config STM32_FLASH_START_800
bool "2KiB bootloader (HID Bootloader)" if MACH_STM32F103
config STM32_FLASH_START_2000
bool "8KiB bootloader (stm32duino)" if MACH_STM32F103 || MACH_STM32F070
config STM32_FLASH_START_4000
bool "16KiB bootloader (HID Bootloader)" if MACH_STM32F405 || MACH_STM32F407
bool "16KiB bootloader (HID Bootloader)" if MACH_STM32F207 || MACH_STM32F405 || MACH_STM32F407
config STM32_FLASH_START_5000
bool "20KiB bootloader" if MACH_STM32F103
config STM32_FLASH_START_7000
bool "28KiB bootloader" if MACH_STM32F103
config STM32_FLASH_START_8000
bool "32KiB bootloader (SKR-PRO)" if MACH_STM32F407
bool "32KiB bootloader (SKR-PRO or TFT35-V3.0)" if MACH_STM32F207 || MACH_STM32F407
config STM32_FLASH_START_10000
bool "64KiB bootloader (Alfawise)" if MACH_STM32F103
config STM32_FLASH_START_0000

5
src/stm32/Makefile
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@@ -6,6 +6,7 @@ CROSS_PREFIX=arm-none-eabi-
dirs-y += src/stm32 src/generic
dirs-$(CONFIG_MACH_STM32F0) += lib/stm32f0
dirs-$(CONFIG_MACH_STM32F1) += lib/stm32f1
dirs-$(CONFIG_MACH_STM32F2) += lib/stm32f2
dirs-$(CONFIG_MACH_STM32F4) += lib/stm32f4
MCU := $(shell echo $(CONFIG_MCU))
@@ -13,6 +14,7 @@ MCU_UPPER := $(shell echo $(CONFIG_MCU) | tr a-z A-Z | tr X x)
CFLAGS-$(CONFIG_MACH_STM32F0) += -mcpu=cortex-m0 -Ilib/stm32f0/include
CFLAGS-$(CONFIG_MACH_STM32F1) += -mcpu=cortex-m3 -Ilib/stm32f1/include
CFLAGS-$(CONFIG_MACH_STM32F2) += -mcpu=cortex-m3 -Ilib/stm32f2/include
CFLAGS-$(CONFIG_MACH_STM32F4) += -mcpu=cortex-m4 -Ilib/stm32f4/include
CFLAGS-$(CONFIG_MACH_STM32F4) += -mfpu=fpv4-sp-d16 -mfloat-abi=hard
CFLAGS += $(CFLAGS-y) -D$(MCU_UPPER) -mthumb -Ilib/cmsis-core
@@ -31,6 +33,9 @@ src-$(CONFIG_MACH_STM32F0) += stm32/stm32f0_i2c.c
src-$(CONFIG_MACH_STM32F1) += ../lib/stm32f1/system_stm32f1xx.c
src-$(CONFIG_MACH_STM32F1) += stm32/stm32f1.c generic/armcm_timer.c
src-$(CONFIG_MACH_STM32F1) += stm32/adc.c stm32/i2c.c
src-$(CONFIG_MACH_STM32F2) += ../lib/stm32f2/system_stm32f2xx.c
src-$(CONFIG_MACH_STM32F2) += stm32/stm32f4.c generic/armcm_timer.c
src-$(CONFIG_MACH_STM32F2) += stm32/adc.c stm32/i2c.c
src-$(CONFIG_MACH_STM32F4) += ../lib/stm32f4/system_stm32f4xx.c
src-$(CONFIG_MACH_STM32F4) += stm32/stm32f4.c generic/armcm_timer.c
src-$(CONFIG_MACH_STM32F4) += stm32/adc.c stm32/i2c.c

2
src/stm32/internal.h
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@@ -8,6 +8,8 @@
#include "stm32f0xx.h"
#elif CONFIG_MACH_STM32F1
#include "stm32f1xx.h"
#elif CONFIG_MACH_STM32F2
#include "stm32f2xx.h"
#elif CONFIG_MACH_STM32F4
#include "stm32f4xx.h"
#endif

28
src/stm32/stm32f4.c
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@@ -1,4 +1,4 @@
// Code to setup clocks and gpio on stm32f4
// Code to setup clocks and gpio on stm32f2/stm32f4
//
// Copyright (C) 2019 Kevin O'Connor <kevin@koconnor.net>
//
@@ -118,6 +118,28 @@ DECL_CONSTANT_STR("RESERVE_PINS_crystal", "PH0,PH1");
#endif
// Clock configuration
static void
enable_clock_stm32f20x(void)
{
#if CONFIG_MACH_STM32F207
uint32_t pll_base = 1000000, pll_freq = CONFIG_CLOCK_FREQ * 2, pllcfgr;
if (!CONFIG_STM32_CLOCK_REF_INTERNAL) {
// Configure 120Mhz PLL from external crystal (HSE)
uint32_t div = CONFIG_CLOCK_REF_FREQ / pll_base;
RCC->CR |= RCC_CR_HSEON;
pllcfgr = RCC_PLLCFGR_PLLSRC_HSE | (div << RCC_PLLCFGR_PLLM_Pos);
} else {
// Configure 120Mhz PLL from internal 16Mhz oscillator (HSI)
uint32_t div = 16000000 / pll_base;
pllcfgr = RCC_PLLCFGR_PLLSRC_HSI | (div << RCC_PLLCFGR_PLLM_Pos);
}
RCC->PLLCFGR = (pllcfgr | ((pll_freq/pll_base) << RCC_PLLCFGR_PLLN_Pos)
| (0 << RCC_PLLCFGR_PLLP_Pos)
| ((pll_freq/FREQ_USB) << RCC_PLLCFGR_PLLQ_Pos));
RCC->CR |= RCC_CR_PLLON;
#endif
}
static void
enable_clock_stm32f40x(void)
{
@@ -194,7 +216,9 @@ static void
clock_setup(void)
{
// Configure and enable PLL
if (CONFIG_MACH_STM32F405 || CONFIG_MACH_STM32F407)
if (CONFIG_MACH_STM32F207)
enable_clock_stm32f20x();
else if (CONFIG_MACH_STM32F405 || CONFIG_MACH_STM32F407)
enable_clock_stm32f40x();
else
enable_clock_stm32f446();