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Merge pull request #30 from logicog/crc16

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CRC-16 Calculation and verification
This commit is contained in:
René van Dorst
2025-10-26 21:59:50 +00:00
committed by GitHub
parent 9929fcc169 eb0e4df5ea
commit d0b6a73bf2
6 changed files with 407 additions and 46 deletions
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rtlplayground.c
+75 -39
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@@ -16,6 +16,10 @@
#include "uip/uip.h"
#include "uip/uip_arp.h"
extern __xdata uint16_t crc_value;
__xdata uint8_t crc_testbytes[10];
void crc16(__xdata uint8_t *v) __naked;
// Upload Firmware to 1M
#define FIRMWARE_UPLOAD_START 0x100000
@@ -1046,6 +1050,7 @@ void sleep(uint16_t t)
void reset_chip(void)
{
REG_SET(RTL837X_REG_RESET, 1);
while(1);
}
@@ -1705,45 +1710,6 @@ void bootloader(void)
print_string(" Flash controller\n");
flash_init(0);
// Check update in progress and move blocks
flash_region.addr = FIRMWARE_UPLOAD_START;
flash_region.len = 0x100;
flash_read_bulk(flash_buf);
if (flash_buf[0] == 0x00 && flash_buf[1] == 0x40) {
print_string("Update in progress, moving firmware to start of FLASH!\n");
__xdata uint32_t dest = 0x0;
__xdata uint32_t source = FIRMWARE_UPLOAD_START;
// A 512kByte = 4MBit Flash has 128*8=1024 512k blocks, we copy only 120
for (__xdata uint16_t i=0; i < 960; i++) {
print_string("Writing block: ");
print_short(dest);
flash_region.addr = source;
flash_region.len = 0x200;
flash_read_bulk(flash_buf);
write_char('\n');
if (!(i & 0x7)) {
flash_region.addr = dest;
flash_sector_erase();
}
flash_region.addr = dest;
flash_region.len = 0x200;
flash_write_bytes(flash_buf);
dest += 0x200;
source += 0x200;
}
print_string("Deleting uploaded flash image\n");
dest = FIRMWARE_UPLOAD_START;
for (register uint8_t i=0; i < 120; i++) {
flash_region.addr = dest;
flash_sector_erase();
dest += 0x1000;
}
print_string("Resetting now");
reset_chip();
}
// Reset NIC
reg_bit_set(0x24, 2);
do {
@@ -1762,6 +1728,76 @@ void bootloader(void)
rtl8372_init();
delay(1000);
// Check update in progress and move blocks
flash_region.addr = FIRMWARE_UPLOAD_START;
flash_region.len = 0x100;
flash_read_bulk(flash_buf);
if (flash_buf[0] == 0x00 && flash_buf[1] == 0x40) {
__xdata uint32_t dest = 0x0;
__xdata uint32_t source = FIRMWARE_UPLOAD_START;
__xdata uint16_t i = 0;
__xdata uint16_t j = 0;
__xdata uint8_t * __xdata bptr;
print_string("Identified update image. Checking integrity...\n");
crc_value = 0x0000;
for (i = 0; i < 1024; i++) {
flash_region.addr = source;
flash_region.len = 0x200;
flash_read_bulk(flash_buf);
bptr = flash_buf;
for (j = 0; j < 0x200; j++) {
print_byte(*bptr); write_char(' ');
crc16(bptr++);
print_short(crc_value); write_char(':');
}
source += 0x200;
write_char('\n'); print_short(crc_value); write_char(' ');
}
if (crc_value == 0xb001) {
print_string("Checksum OK\n");
print_string("Update in progress, moving firmware to start of FLASH!\n");
source = FIRMWARE_UPLOAD_START;
// A 512kByte = 4MBit Flash has 128*8=1024 512k blocks, we copy only 120
for (i = 0; i < 960; i++) {
print_string("Writing block: ");
print_short(dest);
flash_region.addr = source;
flash_region.len = 0x200;
flash_read_bulk(flash_buf);
write_char('\n');
if (!(i & 0x7)) {
flash_region.addr = dest;
flash_sector_erase();
}
flash_region.addr = dest;
flash_region.len = 0x200;
flash_write_bytes(flash_buf);
dest += 0x200;
source += 0x200;
}
print_string("Deleting uploaded flash image\n");
dest = FIRMWARE_UPLOAD_START;
for (register uint8_t i=0; i < 128; i++) {
flash_region.addr = dest;
flash_sector_erase();
dest += 0x1000;
}
print_string("Resetting now");
delay(200);
reset_chip();
}
print_string("Checksum incorrect, please upload the image again\n");
print_string("Erasing bad uploaded flash image\n");
dest = FIRMWARE_UPLOAD_START;
for (register uint8_t i=0; i < 128; i++) {
flash_region.addr = dest;
flash_sector_erase();
dest += 0x1000;
}
}
#ifdef DEBUG
// This register seems to work on the RTL8373 only if also the SDS
// Is correctly configured. Therefore, we can test it, here...