ports: Make new ports/ sub-directory and move all ports there.

This is to keep the top-level directory clean, to make it clear what is
core and what is a port, and to allow the repository to grow with new ports
in a sustainable way.

10 files changed, 0 insertions, 608 deletions

diff --git a/minimal/Makefile b/minimal/Makefile
deleted file mode 100644
index c95d639af..000000000
--- a/minimal/Makefile
+++ /dev/null
@@ -1,90 +0,0 @@
-include ../py/mkenv.mk
-
-CROSS = 0
-
-# qstr definitions (must come before including py.mk)
-QSTR_DEFS = qstrdefsport.h
-
-# include py core make definitions
-include $(TOP)/py/py.mk
-
-ifeq ($(CROSS), 1)
-CROSS_COMPILE = arm-none-eabi-
-endif
-
-INC += -I.
-INC += -I$(TOP)
-INC += -I$(BUILD)
-
-ifeq ($(CROSS), 1)
-DFU = $(TOP)/tools/dfu.py
-PYDFU = $(TOP)/tools/pydfu.py
-CFLAGS_CORTEX_M4 = -mthumb -mtune=cortex-m4 -mabi=aapcs-linux -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -fsingle-precision-constant -Wdouble-promotion
-CFLAGS = $(INC) -Wall -Werror -std=c99 -nostdlib $(CFLAGS_CORTEX_M4) $(COPT)
-LDFLAGS = -nostdlib -T stm32f405.ld -Map=$@.map --cref --gc-sections
-else
-LD = gcc
-CFLAGS = -m32 $(INC) -Wall -Werror -std=c99 $(COPT)
-LDFLAGS = -m32 -Wl,-Map=$@.map,--cref -Wl,--gc-sections
-endif
-
-# Tune for Debugging or Optimization
-ifeq ($(DEBUG), 1)
-CFLAGS += -O0 -ggdb
-else
-CFLAGS += -Os -DNDEBUG
-CFLAGS += -fdata-sections -ffunction-sections
-endif
-
-LIBS =
-
-SRC_C = \
-	main.c \
-	uart_core.c \
-	lib/utils/stdout_helpers.c \
-	lib/utils/pyexec.c \
-	lib/libc/string0.c \
-	lib/mp-readline/readline.c \
-	$(BUILD)/_frozen_mpy.c \
-
-OBJ = $(PY_O) $(addprefix $(BUILD)/, $(SRC_C:.c=.o))
-
-ifeq ($(CROSS), 1)
-all: $(BUILD)/firmware.dfu
-else
-all: $(BUILD)/firmware.elf
-endif
-
-$(BUILD)/_frozen_mpy.c: frozentest.mpy $(BUILD)/genhdr/qstrdefs.generated.h
-	$(ECHO) "MISC freezing bytecode"
-	$(Q)$(TOP)/tools/mpy-tool.py -f -q $(BUILD)/genhdr/qstrdefs.preprocessed.h -mlongint-impl=none $< > $@
-
-$(BUILD)/firmware.elf: $(OBJ)
-	$(ECHO) "LINK $@"
-	$(Q)$(LD) $(LDFLAGS) -o $@ $^ $(LIBS)
-	$(Q)$(SIZE) $@
-
-$(BUILD)/firmware.bin: $(BUILD)/firmware.elf
-	$(Q)$(OBJCOPY) -O binary -j .isr_vector -j .text -j .data $^ $(BUILD)/firmware.bin
-
-$(BUILD)/firmware.dfu: $(BUILD)/firmware.bin
-	$(ECHO) "Create $@"
-	$(Q)$(PYTHON) $(DFU) -b 0x08000000:$(BUILD)/firmware.bin $@
-
-deploy: $(BUILD)/firmware.dfu
-	$(ECHO) "Writing $< to the board"
-	$(Q)$(PYTHON) $(PYDFU) -u $<
-
-# Run emulation build on a POSIX system with suitable terminal settings
-run:
-	stty raw opost -echo
-	build/firmware.elf
-	@echo Resetting terminal...
-# This sleep is useful to spot segfaults
-	sleep 1
-	reset
-
-test: $(BUILD)/firmware.elf
-	$(Q)/bin/echo -e "print('hello world!', list(x+1 for x in range(10)), end='eol\\\\n')\\r\\n\\x04" | $(BUILD)/firmware.elf | tail -n2 | grep "^hello world! \\[1, 2, 3, 4, 5, 6, 7, 8, 9, 10\\]eol"
-
-include $(TOP)/py/mkrules.mk
diff --git a/minimal/README.md b/minimal/README.md
deleted file mode 100644
index 14b8c00a3..000000000
--- a/minimal/README.md
+++ /dev/null
@@ -1,47 +0,0 @@
-# The minimal port
-
-This port is intended to be a minimal MicroPython port that actually runs.
-It can run under Linux (or similar) and on any STM32F4xx MCU (eg the pyboard).
-
-## Building and running Linux version
-
-By default the port will be built for the host machine:
-
-    $ make
-
-To run a small test script do:
-
-    $ make run
-
-## Building for an STM32 MCU
-
-The Makefile has the ability to build for a Cortex-M CPU, and by default
-includes some start-up code for an STM32F4xx MCU and also enables a UART
-for communication.  To build:
-
-    $ make CROSS=1
-
-If you previously built the Linux version, you will need to first run
-`make clean` to get rid of incompatible object files.
-
-Building will produce the build/firmware.dfu file which can be programmed
-to an MCU using:
-
-    $ make CROSS=1 deploy
-
-This version of the build will work out-of-the-box on a pyboard (and
-anything similar), and will give you a MicroPython REPL on UART1 at 9600
-baud.  Pin PA13 will also be driven high, and this turns on the red LED on
-the pyboard.
-
-## Building without the built-in MicroPython compiler
-
-This minimal port can be built with the built-in MicroPython compiler
-disabled.  This will reduce the firmware by about 20k on a Thumb2 machine,
-and by about 40k on 32-bit x86.  Without the compiler the REPL will be
-disabled, but pre-compiled scripts can still be executed.
-
-To test out this feature, change the `MICROPY_ENABLE_COMPILER` config
-option to "0" in the mpconfigport.h file in this directory.  Then
-recompile and run the firmware and it will execute the frozentest.py
-file.
diff --git a/minimal/frozentest.mpy b/minimal/frozentest.mpy
deleted file mode 100644
index 87f9581bf..000000000
--- a/minimal/frozentest.mpy
+++ /dev/null
diff --git a/minimal/frozentest.py b/minimal/frozentest.py
deleted file mode 100644
index 0f99b7429..000000000
--- a/minimal/frozentest.py
+++ /dev/null
@@ -1,7 +0,0 @@
-print('uPy')
-print('a long string that is not interned')
-print('a string that has unicode αβγ chars')
-print(b'bytes 1234\x01')
-print(123456789)
-for i in range(4):
-    print(i)
diff --git a/minimal/main.c b/minimal/main.c
deleted file mode 100644
index e28cfe45e..000000000
--- a/minimal/main.c
+++ /dev/null
@@ -1,257 +0,0 @@
-#include <stdint.h>
-#include <stdio.h>
-#include <string.h>
-
-#include "py/nlr.h"
-#include "py/compile.h"
-#include "py/runtime.h"
-#include "py/repl.h"
-#include "py/gc.h"
-#include "py/mperrno.h"
-#include "lib/utils/pyexec.h"
-
-#if MICROPY_ENABLE_COMPILER
-void do_str(const char *src, mp_parse_input_kind_t input_kind) {
-    nlr_buf_t nlr;
-    if (nlr_push(&nlr) == 0) {
-        mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, src, strlen(src), 0);
-        qstr source_name = lex->source_name;
-        mp_parse_tree_t parse_tree = mp_parse(lex, input_kind);
-        mp_obj_t module_fun = mp_compile(&parse_tree, source_name, MP_EMIT_OPT_NONE, true);
-        mp_call_function_0(module_fun);
-        nlr_pop();
-    } else {
-        // uncaught exception
-        mp_obj_print_exception(&mp_plat_print, (mp_obj_t)nlr.ret_val);
-    }
-}
-#endif
-
-static char *stack_top;
-static char heap[2048];
-
-int main(int argc, char **argv) {
-    int stack_dummy;
-    stack_top = (char*)&stack_dummy;
-
-    #if MICROPY_ENABLE_GC
-    gc_init(heap, heap + sizeof(heap));
-    #endif
-    mp_init();
-    #if MICROPY_ENABLE_COMPILER
-    #if MICROPY_REPL_EVENT_DRIVEN
-    pyexec_event_repl_init();
-    for (;;) {
-        int c = mp_hal_stdin_rx_chr();
-        if (pyexec_event_repl_process_char(c)) {
-            break;
-        }
-    }
-    #else
-    pyexec_friendly_repl();
-    #endif
-    //do_str("print('hello world!', list(x+1 for x in range(10)), end='eol\\n')", MP_PARSE_SINGLE_INPUT);
-    //do_str("for i in range(10):\r\n  print(i)", MP_PARSE_FILE_INPUT);
-    #else
-    pyexec_frozen_module("frozentest.py");
-    #endif
-    mp_deinit();
-    return 0;
-}
-
-void gc_collect(void) {
-    // WARNING: This gc_collect implementation doesn't try to get root
-    // pointers from CPU registers, and thus may function incorrectly.
-    void *dummy;
-    gc_collect_start();
-    gc_collect_root(&dummy, ((mp_uint_t)stack_top - (mp_uint_t)&dummy) / sizeof(mp_uint_t));
-    gc_collect_end();
-    gc_dump_info();
-}
-
-mp_lexer_t *mp_lexer_new_from_file(const char *filename) {
-    mp_raise_OSError(MP_ENOENT);
-}
-
-mp_import_stat_t mp_import_stat(const char *path) {
-    return MP_IMPORT_STAT_NO_EXIST;
-}
-
-mp_obj_t mp_builtin_open(size_t n_args, const mp_obj_t *args, mp_map_t *kwargs) {
-    return mp_const_none;
-}
-MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);
-
-void nlr_jump_fail(void *val) {
-    while (1);
-}
-
-void NORETURN __fatal_error(const char *msg) {
-    while (1);
-}
-
-#ifndef NDEBUG
-void MP_WEAK __assert_func(const char *file, int line, const char *func, const char *expr) {
-    printf("Assertion '%s' failed, at file %s:%d\n", expr, file, line);
-    __fatal_error("Assertion failed");
-}
-#endif
-
-#if MICROPY_MIN_USE_CORTEX_CPU
-
-// this is a minimal IRQ and reset framework for any Cortex-M CPU
-
-extern uint32_t _estack, _sidata, _sdata, _edata, _sbss, _ebss;
-
-void Reset_Handler(void) __attribute__((naked));
-void Reset_Handler(void) {
-    // set stack pointer
-    __asm volatile ("ldr sp, =_estack");
-    // copy .data section from flash to RAM
-    for (uint32_t *src = &_sidata, *dest = &_sdata; dest < &_edata;) {
-        *dest++ = *src++;
-    }
-    // zero out .bss section
-    for (uint32_t *dest = &_sbss; dest < &_ebss;) {
-        *dest++ = 0;
-    }
-    // jump to board initialisation
-    void _start(void);
-    _start();
-}
-
-void Default_Handler(void) {
-    for (;;) {
-    }
-}
-
-const uint32_t isr_vector[] __attribute__((section(".isr_vector"))) = {
-    (uint32_t)&_estack,
-    (uint32_t)&Reset_Handler,
-    (uint32_t)&Default_Handler, // NMI_Handler
-    (uint32_t)&Default_Handler, // HardFault_Handler
-    (uint32_t)&Default_Handler, // MemManage_Handler
-    (uint32_t)&Default_Handler, // BusFault_Handler
-    (uint32_t)&Default_Handler, // UsageFault_Handler
-    0,
-    0,
-    0,
-    0,
-    (uint32_t)&Default_Handler, // SVC_Handler
-    (uint32_t)&Default_Handler, // DebugMon_Handler
-    0,
-    (uint32_t)&Default_Handler, // PendSV_Handler
-    (uint32_t)&Default_Handler, // SysTick_Handler
-};
-
-void _start(void) {
-    // when we get here: stack is initialised, bss is clear, data is copied
-
-    // SCB->CCR: enable 8-byte stack alignment for IRQ handlers, in accord with EABI
-    *((volatile uint32_t*)0xe000ed14) |= 1 << 9;
-
-    // initialise the cpu and peripherals
-    #if MICROPY_MIN_USE_STM32_MCU
-    void stm32_init(void);
-    stm32_init();
-    #endif
-
-    // now that we have a basic system up and running we can call main
-    main(0, NULL);
-
-    // we must not return
-    for (;;) {
-    }
-}
-
-#endif
-
-#if MICROPY_MIN_USE_STM32_MCU
-
-// this is minimal set-up code for an STM32 MCU
-
-typedef struct {
-    volatile uint32_t CR;
-    volatile uint32_t PLLCFGR;
-    volatile uint32_t CFGR;
-    volatile uint32_t CIR;
-    uint32_t _1[8];
-    volatile uint32_t AHB1ENR;
-    volatile uint32_t AHB2ENR;
-    volatile uint32_t AHB3ENR;
-    uint32_t _2;
-    volatile uint32_t APB1ENR;
-    volatile uint32_t APB2ENR;
-} periph_rcc_t;
-
-typedef struct {
-    volatile uint32_t MODER;
-    volatile uint32_t OTYPER;
-    volatile uint32_t OSPEEDR;
-    volatile uint32_t PUPDR;
-    volatile uint32_t IDR;
-    volatile uint32_t ODR;
-    volatile uint16_t BSRRL;
-    volatile uint16_t BSRRH;
-    volatile uint32_t LCKR;
-    volatile uint32_t AFR[2];
-} periph_gpio_t;
-
-typedef struct {
-    volatile uint32_t SR;
-    volatile uint32_t DR;
-    volatile uint32_t BRR;
-    volatile uint32_t CR1;
-} periph_uart_t;
-
-#define USART1 ((periph_uart_t*) 0x40011000)
-#define GPIOA  ((periph_gpio_t*) 0x40020000)
-#define GPIOB  ((periph_gpio_t*) 0x40020400)
-#define RCC    ((periph_rcc_t*)  0x40023800)
-
-// simple GPIO interface
-#define GPIO_MODE_IN (0)
-#define GPIO_MODE_OUT (1)
-#define GPIO_MODE_ALT (2)
-#define GPIO_PULL_NONE (0)
-#define GPIO_PULL_UP (0)
-#define GPIO_PULL_DOWN (1)
-void gpio_init(periph_gpio_t *gpio, int pin, int mode, int pull, int alt) {
-    gpio->MODER = (gpio->MODER & ~(3 << (2 * pin))) | (mode << (2 * pin));
-    // OTYPER is left as default push-pull
-    // OSPEEDR is left as default low speed
-    gpio->PUPDR = (gpio->PUPDR & ~(3 << (2 * pin))) | (pull << (2 * pin));
-    gpio->AFR[pin >> 3] = (gpio->AFR[pin >> 3] & ~(15 << (4 * (pin & 7)))) | (alt << (4 * (pin & 7)));
-}
-#define gpio_get(gpio, pin) ((gpio->IDR >> (pin)) & 1)
-#define gpio_set(gpio, pin, value) do { gpio->ODR = (gpio->ODR & ~(1 << (pin))) | (value << pin); } while (0)
-#define gpio_low(gpio, pin) do { gpio->BSRRH = (1 << (pin)); } while (0)
-#define gpio_high(gpio, pin) do { gpio->BSRRL = (1 << (pin)); } while (0)
-
-void stm32_init(void) {
-    // basic MCU config
-    RCC->CR |= (uint32_t)0x00000001; // set HSION
-    RCC->CFGR = 0x00000000; // reset all
-    RCC->CR &= (uint32_t)0xfef6ffff; // reset HSEON, CSSON, PLLON
-    RCC->PLLCFGR = 0x24003010; // reset PLLCFGR
-    RCC->CR &= (uint32_t)0xfffbffff; // reset HSEBYP
-    RCC->CIR = 0x00000000; // disable IRQs
-
-    // leave the clock as-is (internal 16MHz)
-
-    // enable GPIO clocks
-    RCC->AHB1ENR |= 0x00000003; // GPIOAEN, GPIOBEN
-
-    // turn on an LED! (on pyboard it's the red one)
-    gpio_init(GPIOA, 13, GPIO_MODE_OUT, GPIO_PULL_NONE, 0);
-    gpio_high(GPIOA, 13);
-
-    // enable UART1 at 9600 baud (TX=B6, RX=B7)
-    gpio_init(GPIOB, 6, GPIO_MODE_ALT, GPIO_PULL_NONE, 7);
-    gpio_init(GPIOB, 7, GPIO_MODE_ALT, GPIO_PULL_NONE, 7);
-    RCC->APB2ENR |= 0x00000010; // USART1EN
-    USART1->BRR = (104 << 4) | 3; // 16MHz/(16*104.1875) = 9598 baud
-    USART1->CR1 = 0x0000200c; // USART enable, tx enable, rx enable
-}
-
-#endif
diff --git a/minimal/mpconfigport.h b/minimal/mpconfigport.h
deleted file mode 100644
index 8744ca950..000000000
--- a/minimal/mpconfigport.h
+++ /dev/null
@@ -1,97 +0,0 @@
-#include <stdint.h>
-
-// options to control how MicroPython is built
-
-// You can disable the built-in MicroPython compiler by setting the following
-// config option to 0.  If you do this then you won't get a REPL prompt, but you
-// will still be able to execute pre-compiled scripts, compiled with mpy-cross.
-#define MICROPY_ENABLE_COMPILER     (1)
-
-#define MICROPY_QSTR_BYTES_IN_HASH  (1)
-#define MICROPY_QSTR_EXTRA_POOL     mp_qstr_frozen_const_pool
-#define MICROPY_ALLOC_PATH_MAX      (256)
-#define MICROPY_ALLOC_PARSE_CHUNK_INIT (16)
-#define MICROPY_EMIT_X64            (0)
-#define MICROPY_EMIT_THUMB          (0)
-#define MICROPY_EMIT_INLINE_THUMB   (0)
-#define MICROPY_COMP_MODULE_CONST   (0)
-#define MICROPY_COMP_CONST          (0)
-#define MICROPY_COMP_DOUBLE_TUPLE_ASSIGN (0)
-#define MICROPY_COMP_TRIPLE_TUPLE_ASSIGN (0)
-#define MICROPY_MEM_STATS           (0)
-#define MICROPY_DEBUG_PRINTERS      (0)
-#define MICROPY_ENABLE_GC           (1)
-#define MICROPY_GC_ALLOC_THRESHOLD  (0)
-#define MICROPY_REPL_EVENT_DRIVEN   (0)
-#define MICROPY_HELPER_REPL         (1)
-#define MICROPY_HELPER_LEXER_UNIX   (0)
-#define MICROPY_ENABLE_SOURCE_LINE  (0)
-#define MICROPY_ENABLE_DOC_STRING   (0)
-#define MICROPY_ERROR_REPORTING     (MICROPY_ERROR_REPORTING_TERSE)
-#define MICROPY_BUILTIN_METHOD_CHECK_SELF_ARG (0)
-#define MICROPY_PY_ASYNC_AWAIT      (0)
-#define MICROPY_PY_BUILTINS_BYTEARRAY (0)
-#define MICROPY_PY_BUILTINS_MEMORYVIEW (0)
-#define MICROPY_PY_BUILTINS_ENUMERATE (0)
-#define MICROPY_PY_BUILTINS_FILTER  (0)
-#define MICROPY_PY_BUILTINS_FROZENSET (0)
-#define MICROPY_PY_BUILTINS_REVERSED (0)
-#define MICROPY_PY_BUILTINS_SET     (0)
-#define MICROPY_PY_BUILTINS_SLICE   (0)
-#define MICROPY_PY_BUILTINS_PROPERTY (0)
-#define MICROPY_PY_BUILTINS_MIN_MAX (0)
-#define MICROPY_PY___FILE__         (0)
-#define MICROPY_PY_GC               (0)
-#define MICROPY_PY_ARRAY            (0)
-#define MICROPY_PY_ATTRTUPLE        (0)
-#define MICROPY_PY_COLLECTIONS      (0)
-#define MICROPY_PY_MATH             (0)
-#define MICROPY_PY_CMATH            (0)
-#define MICROPY_PY_IO               (0)
-#define MICROPY_PY_STRUCT           (0)
-#define MICROPY_PY_SYS              (0)
-#define MICROPY_MODULE_FROZEN_MPY   (1)
-#define MICROPY_CPYTHON_COMPAT      (0)
-#define MICROPY_LONGINT_IMPL        (MICROPY_LONGINT_IMPL_NONE)
-#define MICROPY_FLOAT_IMPL          (MICROPY_FLOAT_IMPL_NONE)
-
-// type definitions for the specific machine
-
-#define MICROPY_MAKE_POINTER_CALLABLE(p) ((void*)((mp_uint_t)(p) | 1))
-
-// This port is intended to be 32-bit, but unfortunately, int32_t for
-// different targets may be defined in different ways - either as int
-// or as long. This requires different printf formatting specifiers
-// to print such value. So, we avoid int32_t and use int directly.
-#define UINT_FMT "%u"
-#define INT_FMT "%d"
-typedef int mp_int_t; // must be pointer size
-typedef unsigned mp_uint_t; // must be pointer size
-
-typedef long mp_off_t;
-
-#define MP_PLAT_PRINT_STRN(str, len) mp_hal_stdout_tx_strn_cooked(str, len)
-
-// extra built in names to add to the global namespace
-#define MICROPY_PORT_BUILTINS \
-    { MP_ROM_QSTR(MP_QSTR_open), MP_ROM_PTR(&mp_builtin_open_obj) },
-
-// We need to provide a declaration/definition of alloca()
-#include <alloca.h>
-
-#define MICROPY_HW_BOARD_NAME "minimal"
-#define MICROPY_HW_MCU_NAME "unknown-cpu"
-
-#ifdef __linux__
-#define MICROPY_MIN_USE_STDOUT (1)
-#endif
-
-#ifdef __thumb__
-#define MICROPY_MIN_USE_CORTEX_CPU (1)
-#define MICROPY_MIN_USE_STM32_MCU (1)
-#endif
-
-#define MP_STATE_PORT MP_STATE_VM
-
-#define MICROPY_PORT_ROOT_POINTERS \
-    const char *readline_hist[8];
diff --git a/minimal/mphalport.h b/minimal/mphalport.h
deleted file mode 100644
index 60d68bd2d..000000000
--- a/minimal/mphalport.h
+++ /dev/null
@@ -1,2 +0,0 @@
-static inline mp_uint_t mp_hal_ticks_ms(void) { return 0; }
-static inline void mp_hal_set_interrupt_char(char c) {}
diff --git a/minimal/qstrdefsport.h b/minimal/qstrdefsport.h
deleted file mode 100644
index 3ba897069..000000000
--- a/minimal/qstrdefsport.h
+++ /dev/null
@@ -1 +0,0 @@
-// qstrs specific to this port
diff --git a/minimal/stm32f405.ld b/minimal/stm32f405.ld
deleted file mode 100644
index a202294a5..000000000
--- a/minimal/stm32f405.ld
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
-    GNU linker script for STM32F405
-*/
-
-/* Specify the memory areas */
-MEMORY
-{
-    FLASH (rx)      : ORIGIN = 0x08000000, LENGTH = 0x100000 /* entire flash, 1 MiB */
-    CCMRAM (xrw)    : ORIGIN = 0x10000000, LENGTH = 0x010000 /* 64 KiB */
-    RAM (xrw)       : ORIGIN = 0x20000000, LENGTH = 0x020000 /* 128 KiB */
-}
-
-/* top end of the stack */
-_estack = ORIGIN(RAM) + LENGTH(RAM);
-
-/* define output sections */
-SECTIONS
-{
-    /* The program code and other data goes into FLASH */
-    .text :
-    {
-        . = ALIGN(4);
-        KEEP(*(.isr_vector)) /* isr vector table */
-        *(.text)           /* .text sections (code) */
-        *(.text*)          /* .text* sections (code) */
-        *(.rodata)         /* .rodata sections (constants, strings, etc.) */
-        *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
-
-        . = ALIGN(4);
-        _etext = .;        /* define a global symbol at end of code */
-        _sidata = _etext;  /* This is used by the startup in order to initialize the .data secion */
-    } >FLASH
-
-    /* This is the initialized data section
-    The program executes knowing that the data is in the RAM
-    but the loader puts the initial values in the FLASH (inidata).
-    It is one task of the startup to copy the initial values from FLASH to RAM. */
-    .data : AT ( _sidata )
-    {
-        . = ALIGN(4);
-        _sdata = .;        /* create a global symbol at data start; used by startup code in order to initialise the .data section in RAM */
-        *(.data)           /* .data sections */
-        *(.data*)          /* .data* sections */
-
-        . = ALIGN(4);
-        _edata = .;        /* define a global symbol at data end; used by startup code in order to initialise the .data section in RAM */
-    } >RAM
-
-    /* Uninitialized data section */
-    .bss :
-    {
-        . = ALIGN(4);
-        _sbss = .;         /* define a global symbol at bss start; used by startup code */
-        *(.bss)
-        *(.bss*)
-        *(COMMON)
-
-        . = ALIGN(4);
-        _ebss = .;         /* define a global symbol at bss end; used by startup code */
-    } >RAM
-
-    .ARM.attributes 0 : { *(.ARM.attributes) }
-}
diff --git a/minimal/uart_core.c b/minimal/uart_core.c
deleted file mode 100644
index d2d17b4d1..000000000
--- a/minimal/uart_core.c
+++ /dev/null
@@ -1,44 +0,0 @@
-#include <unistd.h>
-#include "py/mpconfig.h"
-
-/*
- * Core UART functions to implement for a port
- */
-
-#if MICROPY_MIN_USE_STM32_MCU
-typedef struct {
-    volatile uint32_t SR;
-    volatile uint32_t DR;
-} periph_uart_t;
-#define USART1 ((periph_uart_t*)0x40011000)
-#endif
-
-// Receive single character
-int mp_hal_stdin_rx_chr(void) {
-    unsigned char c = 0;
-#if MICROPY_MIN_USE_STDOUT
-    int r = read(0, &c, 1);
-    (void)r;
-#elif MICROPY_MIN_USE_STM32_MCU
-    // wait for RXNE
-    while ((USART1->SR & (1 << 5)) == 0) {
-    }
-    c = USART1->DR;
-#endif
-    return c;
-}
-
-// Send string of given length
-void mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
-#if MICROPY_MIN_USE_STDOUT
-    int r = write(1, str, len);
-    (void)r;
-#elif MICROPY_MIN_USE_STM32_MCU
-    while (len--) {
-        // wait for TXE
-        while ((USART1->SR & (1 << 7)) == 0) {
-        }
-        USART1->DR = *str++;
-    }
-#endif
-}