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Implement CRC32 check

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This commit is contained in:
NIIBE Yutaka
2012-06-04 16:31:40 +09:00
parent 07b1266727
commit f73634d17c
4 changed files with 159 additions and 22 deletions
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46
regnual/regnual.c
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@@ -147,28 +147,58 @@ static uint32_t result;
static const uint8_t *const mem_info[] = { &_flash_start, &_flash_end, };
static uint32_t fetch (int i)
{
uint32_t r;
r = (mem[i*4] << 24) | (mem[i*4+1] << 16) | (mem[i*4+2] << 8) | mem[i*4+3];
return r;
}
struct CRC {
__IO uint32_t DR;
__IO uint8_t IDR;
uint8_t RESERVED0;
uint16_t RESERVED1;
__IO uint32_t CR;
};
#define CRC_CR_RESET 0x01
static uint32_t calc_crc32 (void)
{
struct CRC *CRC = (struct CRC *)0x40023000;
int i;
CRC->CR = CRC_CR_RESET;
for (i = 0; i < 256/4; i++)
CRC->DR = fetch (i);
return CRC->DR;
}
static void regnual_ctrl_write_finish (uint8_t req, uint8_t req_no,
uint16_t value, uint16_t index,
uint16_t len)
{
uint8_t type_rcp = req & (REQUEST_TYPE|RECIPIENT);
if (type_rcp == (VENDOR_REQUEST | DEVICE_RECIPIENT)
&& USB_SETUP_SET (req) && len == 0)
if (type_rcp == (VENDOR_REQUEST | DEVICE_RECIPIENT) && USB_SETUP_SET (req))
{
if (req_no == USB_REGNUAL_SEND && value == 0)
{
result = 0; // calculate crc32 here!!!
}
else if (req_no == USB_REGNUAL_FLASH && index == 0)
result = calc_crc32 ();
else if (req_no == USB_REGNUAL_FLASH && len == 0 && index == 0)
{
uint32_t dst_addr = (0x08000000 + value * 0x100);
result = flash_write (dst_addr, mem, 256);
}
else if (req_no == USB_REGNUAL_PROTECT && value == 0 && index == 0)
else if (req_no == USB_REGNUAL_PROTECT && len == 0
&& value == 0 && index == 0)
result = flash_protect ();
else if (req_no == USB_REGNUAL_FINISH && value == 0 && index == 0)
else if (req_no == USB_REGNUAL_FINISH && len == 0
&& value == 0 && index == 0)
nvic_system_reset ();
}
}