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New sys.c

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This commit is contained in:
NIIBE Yutaka
2015-07-14 16:10:07 +09:00
parent 3ba8234cec
commit 27f71ff5c0
13 changed files with 51 additions and 22 deletions
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32
example-cdc/sys.c
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@@ -243,16 +243,19 @@ flash_check_blank (const uint8_t *p_start, size_t size)
return 1;
}
extern uint8_t __flash_start__, __flash_end__;
#define FLASH_START_ADDR 0x08000000 /* Fixed for all STM32F1. */
#define FLASH_OFFSET 0x1000 /* First pages are not-writable. */
#define FLASH_START (FLASH_START_ADDR+FLASH_OFFSET)
#define CHIP_ID_REG ((uint32_t *)0xe0042000)
#define FLASH_SIZE_REG ((uint16_t *)0x1ffff7e0)
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__;
uint32_t flash_end = FLASH_START + (*FLASH_SIZE_REG)*1024;
if (dst_addr < flash_start || dst_addr + len > flash_end)
if (dst_addr < FLASH_START || dst_addr + len > flash_end)
return 0;
while (len)
@@ -305,17 +308,21 @@ flash_protect (void)
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__;
uint32_t addr = FLASH_START;
uint32_t end = FLASH_START + (*FLASH_SIZE_REG)*1024;
uint32_t page_size = 1024;
int r;
if (((*CHIP_ID_REG) & 0xfff) == 0x0414)
page_size = 2048;
while (addr < end)
{
r = flash_erase_page (addr);
if (r != 0)
break;
addr += FLASH_PAGE_SIZE;
addr += page_size;
}
if (addr >= end)
@@ -416,9 +423,12 @@ handler vector[] __attribute__ ((section(".vectors"))) = {
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,
/* sys version: "2.1" */
'2', 0, '.', 0, '1', 0,
};
const uint8_t __attribute__((section(".sys.board")))
sys_board[] = BOARD_NAME;
const uint32_t __attribute__((section(".sys.board_id")))
sys_board_id = BOARD_ID;
const uint8_t __attribute__((section(".sys.board_name")))
sys_board_name[] = BOARD_NAME;