From cd61ff565335ee58425b5a9611bde9872eb4a888 Mon Sep 17 00:00:00 2001
From: NIIBE Yutaka <gniibe@fsij.org>
Date: Wed, 15 Jul 2015 09:51:24 +0900
Subject: share sys with example-fsm-55
---
example-led/sys.c | 443 +-----------------------------------------------------
example-led/sys.h | 116 +-------------
2 files changed, 2 insertions(+), 557 deletions(-)
mode change 100644 => 120000 example-led/sys.c
mode change 100644 => 120000 example-led/sys.h
(limited to 'example-led')
diff --git a/example-led/sys.c b/example-led/sys.c
deleted file mode 100644
index 06af0c6..0000000
--- a/example-led/sys.c
+++ /dev/null
@@ -1,442 +0,0 @@
-/*
- * sys.c - system routines for the initial page for STM32F030 / STM32F103.
- *
- * Copyright (C) 2013, 2014, 2015 Flying Stone Technology
- * Author: NIIBE Yutaka <gniibe@fsij.org>
- *
- * Copying and distribution of this file, with or without modification,
- * are permitted in any medium without royalty provided the copyright
- * notice and this notice are preserved. This file is offered as-is,
- * without any warranty.
- *
- * When the flash ROM is protected, we cannot modify the initial page.
- * We put some system routines (which is useful for any program) here.
- */
-
-#include <stdint.h>
-#include <stdlib.h>
-#include "board.h"
-
-#include "clk_gpio_init.c"
-
-#define CORTEX_PRIORITY_BITS 4
-#define CORTEX_PRIORITY_MASK(n) ((n) << (8 - CORTEX_PRIORITY_BITS))
-#define USB_LP_CAN1_RX0_IRQn 20
-#define STM32_USB_IRQ_PRIORITY 11
-
-struct NVIC {
- uint32_t ISER[8];
- uint32_t unused1[24];
- uint32_t ICER[8];
- uint32_t unused2[24];
- uint32_t ISPR[8];
- uint32_t unused3[24];
- uint32_t ICPR[8];
- uint32_t unused4[24];
- uint32_t IABR[8];
- uint32_t unused5[56];
- uint32_t IPR[60];
-};
-
-static struct NVIC *const NVICBase = ((struct NVIC *const)0xE000E100);
-#define NVIC_ISER(n) (NVICBase->ISER[n >> 5])
-#define NVIC_ICPR(n) (NVICBase->ICPR[n >> 5])
-#define NVIC_IPR(n) (NVICBase->IPR[n >> 2])
-
-static void
-nvic_enable_vector (uint32_t n, uint32_t prio)
-{
- unsigned int sh = (n & 3) << 3;
-
- NVIC_IPR (n) = (NVIC_IPR(n) & ~(0xFF << sh)) | (prio << sh);
- NVIC_ICPR (n) = 1 << (n & 0x1F);
- NVIC_ISER (n) = 1 << (n & 0x1F);
-}
-
-static void
-usb_cable_config (int enable)
-{
-#if defined(GPIO_USB_SET_TO_ENABLE)
- if (enable)
- GPIO_USB->BSRR = (1 << GPIO_USB_SET_TO_ENABLE);
- else
- GPIO_USB->BRR = (1 << GPIO_USB_SET_TO_ENABLE);
-#elif defined(GPIO_USB_CLEAR_TO_ENABLE)
- if (enable)
- GPIO_USB->BRR = (1 << GPIO_USB_CLEAR_TO_ENABLE);
- else
- GPIO_USB->BSRR = (1 << GPIO_USB_CLEAR_TO_ENABLE);
-#else
- (void)enable;
-#endif
-}
-
-void
-set_led (int on)
-{
-#if defined(GPIO_LED_CLEAR_TO_EMIT)
- if (on)
- GPIO_LED->BRR = (1 << GPIO_LED_CLEAR_TO_EMIT);
- else
- GPIO_LED->BSRR = (1 << GPIO_LED_CLEAR_TO_EMIT);
-#else
- if (on)
- GPIO_LED->BSRR = (1 << GPIO_LED_SET_TO_EMIT);
- else
- GPIO_LED->BRR = (1 << GPIO_LED_SET_TO_EMIT);
-#endif
-}
-
-static void wait (int count)
-{
- int i;
-
- for (i = 0; i < count; i++)
- asm volatile ("" : : "r" (i) : "memory");
-}
-
-
-static void
-usb_lld_sys_shutdown (void)
-{
- RCC->APB1ENR &= ~RCC_APB1ENR_USBEN;
- RCC->APB1RSTR = RCC_APB1RSTR_USBRST;
- usb_cable_config (0);
-}
-
-static void
-usb_lld_sys_init (void)
-{
- if ((RCC->APB1ENR & RCC_APB1ENR_USBEN)
- && (RCC->APB1RSTR & RCC_APB1RSTR_USBRST) == 0)
- /* Make sure the device is disconnected, even after core reset. */
- {
- usb_lld_sys_shutdown ();
- /* Disconnect requires SE0 (>= 2.5uS). */
- wait (300);
- }
-
- usb_cable_config (1);
- RCC->APB1ENR |= RCC_APB1ENR_USBEN;
- nvic_enable_vector (USB_LP_CAN1_RX0_IRQn,
- CORTEX_PRIORITY_MASK (STM32_USB_IRQ_PRIORITY));
- /*
- * Note that we also have other IRQ(s):
- * USB_HP_CAN1_TX_IRQn (for double-buffered or isochronous)
- * USBWakeUp_IRQn (suspend/resume)
- */
- RCC->APB1RSTR = RCC_APB1RSTR_USBRST;
- RCC->APB1RSTR = 0;
-}
-
-#define FLASH_KEY1 0x45670123UL
-#define FLASH_KEY2 0xCDEF89ABUL
-
-enum flash_status
-{
- FLASH_BUSY = 1,
- FLASH_ERROR_PG,
- FLASH_ERROR_WRP,
- FLASH_COMPLETE,
- FLASH_TIMEOUT
-};
-
-static void __attribute__ ((used))
-flash_unlock (void)
-{
- FLASH->KEYR = FLASH_KEY1;
- FLASH->KEYR = FLASH_KEY2;
-}
-
-
-#define intr_disable() asm volatile ("cpsid i" : : : "memory")
-#define intr_enable() asm volatile ("cpsie i" : : : "memory")
-
-#define FLASH_SR_BSY 0x01
-#define FLASH_SR_PGERR 0x04
-#define FLASH_SR_WRPRTERR 0x10
-#define FLASH_SR_EOP 0x20
-
-#define FLASH_CR_PG 0x0001
-#define FLASH_CR_PER 0x0002
-#define FLASH_CR_MER 0x0004
-#define FLASH_CR_OPTPG 0x0010
-#define FLASH_CR_OPTER 0x0020
-#define FLASH_CR_STRT 0x0040
-#define FLASH_CR_LOCK 0x0080
-#define FLASH_CR_OPTWRE 0x0200
-#define FLASH_CR_ERRIE 0x0400
-#define FLASH_CR_EOPIE 0x1000
-
-static int
-flash_wait_for_last_operation (uint32_t timeout)
-{
- int status;
-
- do
- {
- status = FLASH->SR;
- if (--timeout == 0)
- break;
- }
- while ((status & FLASH_SR_BSY) != 0);
-
- return status & (FLASH_SR_BSY|FLASH_SR_PGERR|FLASH_SR_WRPRTERR);
-}
-
-#define FLASH_PROGRAM_TIMEOUT 0x00010000
-#define FLASH_ERASE_TIMEOUT 0x01000000
-
-static int
-flash_program_halfword (uint32_t addr, uint16_t data)
-{
- int status;
-
- status = flash_wait_for_last_operation (FLASH_PROGRAM_TIMEOUT);
-
- intr_disable ();
- if (status == 0)
- {
- FLASH->CR |= FLASH_CR_PG;
-
- *(volatile uint16_t *)addr = data;
-
- status = flash_wait_for_last_operation (FLASH_PROGRAM_TIMEOUT);
- FLASH->CR &= ~FLASH_CR_PG;
- }
- intr_enable ();
-
- return status;
-}
-
-static int
-flash_erase_page (uint32_t addr)
-{
- int status;
-
- status = flash_wait_for_last_operation (FLASH_ERASE_TIMEOUT);
-
- intr_disable ();
- if (status == 0)
- {
- FLASH->CR |= FLASH_CR_PER;
- FLASH->AR = addr;
- FLASH->CR |= FLASH_CR_STRT;
-
- status = flash_wait_for_last_operation (FLASH_ERASE_TIMEOUT);
- FLASH->CR &= ~FLASH_CR_PER;
- }
- intr_enable ();
-
- return status;
-}
-
-static int
-flash_check_blank (const uint8_t *p_start, size_t size)
-{
- const uint8_t *p;
-
- for (p = p_start; p < p_start + size; p++)
- if (*p != 0xff)
- return 0;
-
- return 1;
-}
-
-extern uint8_t __flash_start__, __flash_end__;
-
-static int
-flash_write (uint32_t dst_addr, const uint8_t *src, size_t len)
-{
- int status;
- uint32_t flash_start = (uint32_t)&__flash_start__;
- uint32_t flash_end = (uint32_t)&__flash_end__;
-
- if (dst_addr < flash_start || dst_addr + len > flash_end)
- return 0;
-
- while (len)
- {
- uint16_t hw = *src++;
-
- hw |= (*src++ << 8);
- status = flash_program_halfword (dst_addr, hw);
- if (status != 0)
- return 0; /* error return */
-
- dst_addr += 2;
- len -= 2;
- }
-
- return 1;
-}
-
-#define OPTION_BYTES_ADDR 0x1ffff800
-
-static int
-flash_protect (void)
-{
- int status;
- uint32_t option_bytes_value;
-
- status = flash_wait_for_last_operation (FLASH_ERASE_TIMEOUT);
-
- intr_disable ();
- if (status == 0)
- {
- FLASH->OPTKEYR = FLASH_KEY1;
- FLASH->OPTKEYR = FLASH_KEY2;
-
- FLASH->CR |= FLASH_CR_OPTER;
- FLASH->CR |= FLASH_CR_STRT;
-
- status = flash_wait_for_last_operation (FLASH_ERASE_TIMEOUT);
- FLASH->CR &= ~FLASH_CR_OPTER;
- }
- intr_enable ();
-
- if (status != 0)
- return 0;
-
- option_bytes_value = *(uint32_t *)OPTION_BYTES_ADDR;
- return (option_bytes_value & 0xff) == 0xff ? 1 : 0;
-}
-
-static void __attribute__((naked))
-flash_erase_all_and_exec (void (*entry)(void))
-{
- uint32_t addr = (uint32_t)&__flash_start__;
- uint32_t end = (uint32_t)&__flash_end__;
- int r;
-
- while (addr < end)
- {
- r = flash_erase_page (addr);
- if (r != 0)
- break;
-
- addr += FLASH_PAGE_SIZE;
- }
-
- if (addr >= end)
- (*entry) ();
-
- for (;;);
-}
-
-struct SCB
-{
- volatile uint32_t CPUID;
- volatile uint32_t ICSR;
- volatile uint32_t VTOR;
- volatile uint32_t AIRCR;
- volatile uint32_t SCR;
- volatile uint32_t CCR;
- volatile uint8_t SHP[12];
- volatile uint32_t SHCSR;
- volatile uint32_t CFSR;
- volatile uint32_t HFSR;
- volatile uint32_t DFSR;
- volatile uint32_t MMFAR;
- volatile uint32_t BFAR;
- volatile uint32_t AFSR;
- volatile uint32_t PFR[2];
- volatile uint32_t DFR;
- volatile uint32_t ADR;
- volatile uint32_t MMFR[4];
- volatile uint32_t ISAR[5];
-};
-
-#define SCS_BASE (0xE000E000)
-#define SCB_BASE (SCS_BASE + 0x0D00)
-static struct SCB *const SCB = ((struct SCB *const) SCB_BASE);
-
-#define SYSRESETREQ 0x04
-static void
-nvic_system_reset (void)
-{
- SCB->AIRCR = (0x05FA0000 | (SCB->AIRCR & 0x70) | SYSRESETREQ);
- asm volatile ("dsb");
- for (;;);
-}
-
-static void __attribute__ ((naked))
-reset (void)
-{
- /*
- * This code may not be at the start of flash ROM, because of DFU.
- * So, we take the address from PC.
- */
-#if defined(__ARM_ARCH_6M__)
- asm volatile ("cpsid i\n\t" /* Mask all interrupts. */
- "ldr r0, 1f\n\t" /* r0 = RAM start */
- "mov r1, pc\n\t" /* r1 = (PC + 0x0400) & ~0x03ff */
- "mov r2, #0x04\n\t"
- "lsl r2, #8\n\t"
- "add r1, r1, r2\n\t"
- "sub r2, r2, #1\n\t"
- "bic r1, r1, r2\n\t"
- "mov r2, #188\n"
- "2:\n\t" /* Copy vectors. It will be enabled later by clock_init. */
- "ldr r3, [r1, r2]\n\t"
- "str r3, [r0, r2]\n\t"
- "sub r2, #4\n\t"
- "bcs 2b\n\t"
- "msr MSP, r3\n\t" /* Main (exception handler) stack. */
- "ldr r0, [r1, #4]\n\t" /* Reset handler. */
- "bx r0\n\t"
- ".align 2\n"
- "1: .word 0x20000000"
- : /* no output */ : /* no input */ : "memory");
-#else
- extern const unsigned long *FT0, *FT1, *FT2;
- asm volatile ("cpsid i\n\t" /* Mask all interrupts. */
- "ldr r0, 1f\n\t" /* r0 = SCR */
- "mov r1, pc\n\t" /* r1 = (PC + 0x1000) & ~0x0fff */
- "mov r2, #0x1000\n\t"
- "add r1, r1, r2\n\t"
- "sub r2, r2, #1\n\t"
- "bic r1, r1, r2\n\t"
- "str r1, [r0, #8]\n\t" /* Set SCR->VCR */
- "ldr r0, [r1], #4\n\t"
- "msr MSP, r0\n\t" /* Main (exception handler) stack. */
- "ldr r0, [r1]\n\t" /* Reset handler. */
- "bx r0\n\t"
- ".align 2\n"
- "1: .word 0xe000ed00"
- : /* no output */ : /* no input */ : "memory");
- /* Artificial entry to refer FT0, FT1, and FT2. */
- asm volatile (""
- : : "r" (FT0), "r" (FT1), "r" (FT2));
-#endif
- /* Never reach here. */
-}
-
-typedef void (*handler)(void);
-extern uint8_t __ram_end__;
-
-handler vector[] __attribute__ ((section(".vectors"))) = {
- (handler)&__ram_end__,
- reset,
- (handler)set_led,
- flash_unlock,
- (handler)flash_program_halfword,
- (handler)flash_erase_page,
- (handler)flash_check_blank,
- (handler)flash_write,
- (handler)flash_protect,
- (handler)flash_erase_all_and_exec,
- usb_lld_sys_init,
- usb_lld_sys_shutdown,
- nvic_system_reset,
- clock_init,
- gpio_init,
- NULL,
-};
-
-const uint8_t sys_version[8] __attribute__((section(".sys.version"))) = {
- 3*2+2, /* bLength */
- 0x03, /* bDescriptorType = USB_STRING_DESCRIPTOR_TYPE*/
- /* sys version: "2.0" */
- '2', 0, '.', 0, '0', 0,
-};
diff --git a/example-led/sys.c b/example-led/sys.c
new file mode 120000
index 0000000..e2c4499
--- /dev/null
+++ b/example-led/sys.c
@@ -0,0 +1 @@
+../example-fsm-55/sys.c
\ No newline at end of file
diff --git a/example-led/sys.h b/example-led/sys.h
deleted file mode 100644
index 25d33f1..0000000
--- a/example-led/sys.h
+++ /dev/null
@@ -1,115 +0,0 @@
-extern const uint8_t sys_version[8];
-
-typedef void (*handler)(void);
-extern handler vector[16];
-
-static inline const uint8_t *
-unique_device_id (void)
-{
- /* STM32F103 has 96-bit unique device identifier */
- const uint8_t *addr = (const uint8_t *)0x1ffff7e8;
-
- return addr;
-}
-
-static inline void
-set_led (int on)
-{
- void (*func) (int) = (void (*)(int))vector[2];
-
- return (*func) (on);
-}
-
-static inline void
-flash_unlock (void)
-{
- (*vector[3]) ();
-}
-
-static inline int
-flash_program_halfword (uint32_t addr, uint16_t data)
-{
- int (*func) (uint32_t, uint16_t) = (int (*)(uint32_t, uint16_t))vector[4];
-
- return (*func) (addr, data);
-}
-
-static inline int
-flash_erase_page (uint32_t addr)
-{
- int (*func) (uint32_t) = (int (*)(uint32_t))vector[5];
-
- return (*func) (addr);
-}
-
-static inline int
-flash_check_blank (const uint8_t *p_start, size_t size)
-{
- int (*func) (const uint8_t *, int) = (int (*)(const uint8_t *, int))vector[6];
-
- return (*func) (p_start, size);
-}
-
-static inline int
-flash_write (uint32_t dst_addr, const uint8_t *src, size_t len)
-{
- int (*func) (uint32_t, const uint8_t *, size_t)
- = (int (*)(uint32_t, const uint8_t *, size_t))vector[7];
-
- return (*func) (dst_addr, src, len);
-}
-
-static inline int
-flash_protect (void)
-{
- int (*func) (void) = (int (*)(void))vector[8];
-
- return (*func) ();
-}
-
-static inline void __attribute__((noreturn))
-flash_erase_all_and_exec (void (*entry)(void))
-{
- void (*func) (void (*)(void)) = (void (*)(void (*)(void)))vector[9];
-
- (*func) (entry);
- for (;;);
-}
-
-static inline void
-usb_lld_sys_init (void)
-{
- (*vector[10]) ();
-}
-
-static inline void
-usb_lld_sys_shutdown (void)
-{
- (*vector[11]) ();
-}
-
-static inline void
-nvic_system_reset (void)
-{
- (*vector[12]) ();
-}
-
-/*
- * Users can override INLINE by 'attribute((used))' to have an
- * implementation defined.
- */
-#if !defined(INLINE)
-#define INLINE __inline__
-#endif
-
-static INLINE void
-clock_init (void)
-{
- (*vector[13]) ();
-}
-
-static INLINE void
-gpio_init (void)
-{
- (*vector[14]) ();
-}
diff --git a/example-led/sys.h b/example-led/sys.h
new file mode 120000
index 0000000..0e89717
--- /dev/null
+++ b/example-led/sys.h
@@ -0,0 +1 @@
+../example-fsm-55/sys.h
\ No newline at end of file
--
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