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Check for sifficient flashsize before applying an update

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This commit is contained in:
feelfree69
2026-02-25 18:51:00 +01:00
parent e26a9e3db9
commit ffbd2c512d
4 changed files with 53 additions and 108 deletions
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cmd_parser.c
+6 -26
View File
@@ -803,47 +803,27 @@ void cmd_parser(void) __banked
}
} else if (cmd_compare(0, "stat")) {
port_stats_print();
} else if (cmd_compare(0, "flash") && cmd_words_b[1] > 0 && cmd_buffer[cmd_words_b[1]] == 'r') {
print_string("\nPRINT SECURITY REGISTERS\n");
} else if (cmd_compare(0, "flash") && cmd_words_b[1] > 0 && cmd_buffer[cmd_words_b[1]] == 's') {
print_string("\nSECURITY REGISTERS\n");
// The following will only show something else than 0xff if it was programmed for a managed switch
print_string("Region 1: ");
flash_region.addr = 0x0001000;
flash_region.len = 40;
flash_read_security();
print_string("\nRegion 2: ");
flash_region.addr = 0x0002000;
flash_region.len = 40;
flash_read_security();
print_string("\nRegion 3: ");
flash_region.addr = 0x0003000;
flash_region.len = 40;
flash_read_security();
} else if (cmd_compare(0, "flash") && cmd_words_b[1] > 0 && cmd_buffer[cmd_words_b[1]] == 'd') {
print_string("\nDUMPING FLASH\n");
flash_region.addr = 0;
flash_region.len = 255;
flash_dump(255);
} else if (cmd_compare(0, "flash") && cmd_words_b[1] > 0 && cmd_buffer[cmd_words_b[1]] == 'j') {
print_string("\nJEDEC ID\n");
flash_read_jedecid();
} else if (cmd_compare(0, "flash") && cmd_words_b[1] > 0 && cmd_buffer[cmd_words_b[1]] == 'u') {
print_string("\nUNIQUE ID\n");
print_string("\nUNIQUE ID (note: only 4 bytes are likely correct here!)\n");
flash_read_uid();
} else if (cmd_compare(0, "flash") && cmd_words_b[1] > 0 && cmd_buffer[cmd_words_b[1]] == 's') {
print_string("\nFLASH FAST MODE\n"); // Switch to flash 62.5 MHz mode
flash_init(1);
print_string("\nNow dumping flash\n");
flash_region.addr = 0;
flash_region.len = 255;
flash_dump(255);
} else if (cmd_compare(0, "flash") && cmd_words_b[1] > 0 && cmd_buffer[cmd_words_b[1]] == 'e') {
print_string("\nFLASH erase\n");
flash_region.addr = 0x20000;
flash_sector_erase();
} else if (cmd_compare(0, "flash") && cmd_words_b[1] > 0 && cmd_buffer[cmd_words_b[1]] == 'w') {
print_string("\nFLASH write\n");
for (uint8_t i = 0; i < 20; i++)
flash_buf[i] = greeting[i];
flash_region.addr = 0x200000;
flash_region.len = 20;
flash_write_bytes(flash_buf);
} else if (cmd_compare(0, "port") && cmd_words_b[1] > 0) {
parse_port();
} else if (cmd_compare(0, "mtu") && cmd_words_b[1] > 0) {
httpd/httpd.c
+7
View File
@@ -27,6 +27,7 @@ extern __code uint8_t * __code hex;
extern __code struct f_data f_data[];
extern __code char * __code mime_strings[];
extern __xdata struct flash_region_t flash_region;
extern __xdata uint32_t flash_size;
// Flash buffer to optimize flash writing speed, write_len is the current filling position
extern __xdata uint8_t flash_buf[FLASH_BUF_SIZE];
@@ -426,6 +427,12 @@ void handle_post(void)
p += 4; // Skip \r\n\r\n sequence at end of preamble of part
if (is_word(request_path, "upload")) {
if (flash_size < FIRMWARE_UPLOAD_START*2)
{
print_string("Flash too small for firmware upload!\n");
send_bad_request();
return;
}
print_string("Firmware upload started.");
uptr = FIRMWARE_UPLOAD_START;
verify_crc = 1;
rtl837x_flash.c
+16 -57
View File
@@ -9,7 +9,7 @@
__xdata uint8_t dio_enabled;
__xdata struct flash_region_t flash_region;
__xdata uint32_t flash_size;
// For the flash commands, see e.g. Windbond W25Q32JV datasheet
#define CMD_WRITE_STATUS 0x01
@@ -17,8 +17,9 @@ __xdata struct flash_region_t flash_region;
// Don't use command `READ 0x03`, because on many device this command can't run at maximum SPI-clock speed.
// Use `Fast READ 0x0b` instead!
//#define CMD_READ 0x03
#define CMD_READ_STATUS 0x05
#define CMD_WRITE_ENABLE 0x06
#define CMD_FREAD 0x0b
#define CMD_FREAD 0x0b
#define CMD_SECTOR_ERASE 0x20
#define CMD_READ_SECURITY_REGS 0x48
#define CMD_READ_UNIQUE_ID 0x4b
@@ -87,7 +88,7 @@ uint8_t flash_read_status(void)
// setup status read command
SFR_FLASH_TCONF = 0x11;
SFR_FLASH_CMD_R = 5;
SFR_FLASH_CMD_R = CMD_READ_STATUS;
// execute and wait for controller done
SFR_FLASH_EXEC_GO = 1;
@@ -119,9 +120,10 @@ void flash_read_uid(void)
print_byte(SFR_FLASH_DATA8);
print_byte(SFR_FLASH_DATA16);
print_byte(SFR_FLASH_DATA24);
write_char(' ');
SFR_FLASH_DUMMYCYCLES = 24; // Doesn't seem to work; we get the same data as for the first transfer
SFR_FLASH_EXEC_GO = 1;
SFR_FLASH_DUMMYCYCLES = 24;
while(SFR_FLASH_EXEC_BUSY);
print_byte(SFR_FLASH_DATA0);
@@ -148,15 +150,17 @@ void flash_read_jedecid(void)
SFR_FLASH_EXEC_GO = 1;
while(SFR_FLASH_EXEC_BUSY);
print_string("Maufacturer ID: 0x");
print_byte(SFR_FLASH_DATA0);
print_string("\nMemory Type: 0x");
print_byte(SFR_FLASH_DATA8);
print_byte(SFR_FLASH_DATA16);
print_byte(SFR_FLASH_DATA24);
// Reset slow read mode
SFR_FLASH_MODEB = 0x0;
SFR_FLASH_CMD_R = CMD_FREAD;
SFR_FLASH_DUMMYCYCLES = 8;
print_string("\nCapacity: 0x");
uint8_t cap = SFR_FLASH_DATA16;
flash_size = 1UL << cap;
print_byte(cap);
print_string(" = ");
print_long(flash_size);
print_string(" Bytes\n");
flash_configure_mmio();
}
@@ -188,51 +192,6 @@ void flash_write_enable(void)
} while (!(status & 0x2));
}
void flash_dump(uint8_t len)
{
short status;
do {
status = flash_read_status();
print_short(status);
} while (status & 0x1);
// Set fast read mode
if (dio_enabled) {
SFR_FLASH_MODEB = 0x18;
SFR_FLASH_CMD_R = CMD_FREAD_DIO;
SFR_FLASH_DUMMYCYCLES = 4;
} else {
SFR_FLASH_MODEB = 0x0;
SFR_FLASH_CMD_R = CMD_FREAD; // Fast read
SFR_FLASH_DUMMYCYCLES = 8; // Add 8 dummy clocks after read?
}
// Read 4 bytes
SFR_FLASH_TCONF = 4;
while (len) {
SFR_FLASH_ADDR16 = flash_region.addr >> 16;
SFR_FLASH_ADDR8 = flash_region.addr >> 8;
SFR_FLASH_ADDR0 = flash_region.addr;
flash_region.addr += 4;
SFR_FLASH_EXEC_GO = 1;
while(SFR_FLASH_EXEC_BUSY);
print_short(SFR_FLASH_DATA0);
if (len == 1)
return;
print_short(SFR_FLASH_DATA8);
if (len == 2)
return;
print_short(SFR_FLASH_DATA16);
if (len == 3)
return;
print_short(SFR_FLASH_DATA24);
len -= 4;
}
}
/*
* Reads bulk data of length len from the flash memory starging at address src
* and writes the data into a buffer pointed to by dst in XMEM
@@ -315,7 +274,7 @@ void flash_read_security(void)
if (flash_region.len == 3)
break;
print_byte(SFR_FLASH_DATA24);
write_char(' ');
flash_region.len -= 4;
} while(flash_region.len);
rtlplayground.c
+24 -25
View File
@@ -24,9 +24,9 @@
#include "phy.h"
extern __code const struct machine machine;
extern __xdata uint32_t flash_size;
extern __xdata uint16_t crc_value;
__xdata uint8_t crc_testbytes[10];
__xdata struct machine_runtime machine_detected;
void crc16(__xdata uint8_t *v) __naked;
@@ -548,16 +548,6 @@ uint8_t read_flash(uint8_t bank, __code uint8_t *addr)
return v;
}
void print_long_x(__xdata uint8_t v[])
{
write_char('0'); write_char('x');
for (uint8_t i=0; i < 4; i++) {
write_char(hex[v[i] >> 4]);
write_char(hex[v[i] & 0xf]);
}
}
/*
* Read a SerDes register in the SoC
* Input must be: sds_id = 0/1, page < 128, reg <= 0xff
@@ -1869,6 +1859,19 @@ void setup_i2c(void)
void check_and_flash_update_image(void)
{
flash_read_jedecid(); // This initializes also __xdata flash_size variable
print_long(flash_size); print_string(" flash size detected.\n");
print_long(FIRMWARE_UPLOAD_START*2); print_string(" bytes needed for update.\n");
if (flash_size < FIRMWARE_UPLOAD_START*2) {
print_string("Flash too small for updating; skipping update check\n");
return;
}
else {
print_string("Flash size ok.\n");
}
// Check if an update image is in flash
flash_region.addr = FIRMWARE_UPLOAD_START;
flash_region.len = 0x100;
@@ -1881,7 +1884,7 @@ void check_and_flash_update_image(void)
__xdata uint16_t i = 0;
__xdata uint16_t j = 0;
__xdata uint8_t * __xdata bptr;
print_string("Identified update image. Checking integrity...");
print_string("Identified update image. Checking integrity");
flash_init(0); // Re-initialize flash for non-DIO operation, otherwise flashing will fail
set_sys_led_state(SYS_LED_FAST);
crc_value = 0x0000;
@@ -1894,25 +1897,20 @@ void check_and_flash_update_image(void)
crc16(bptr++);
}
source += FLASH_BUF_SIZE;
if (i%16 == 0)
write_char('.');
if (i%16 == 0) write_char('.');
}
if (crc_value == 0xb001) {
print_string("\nChecksum OK\n");
print_string("Update in progress, moving firmware to start of FLASH.");
print_string("Checksum OK.\nUpdate in progress, moving firmware to start of flash");
source = FIRMWARE_UPLOAD_START;
// A 512kByte = 4MBit Flash has 128*8=1024 512byte blocks, we copy only 896
// (don't overwrite config @ 0x70000)
for (i = 0; i < 896; i++) {
// print_string("Writing block: ");
// print_short(dest);
// Don't copy the config area at the end of flash
for (i = 0; i < CONFIG_START/FLASH_BUF_SIZE; i++) {
flash_region.addr = source;
flash_region.len = FLASH_BUF_SIZE;
flash_read_bulk(flash_buf);
if (!(i & 0x7)) {
if (i%8 == 0) {
flash_region.addr = dest;
flash_sector_erase();
write_char('.');
if (i%16 == 0) write_char('.');
}
flash_region.addr = dest;
flash_region.len = FLASH_BUF_SIZE;
@@ -1920,15 +1918,16 @@ void check_and_flash_update_image(void)
dest += FLASH_BUF_SIZE;
source += FLASH_BUF_SIZE;
}
print_string("\nDeleting uploaded flash image\n");
print_string("Done.\nDeleting uploaded flash image");
dest = FIRMWARE_UPLOAD_START;
for (register uint8_t i=0; i < 128; i++) // TODO: Erasing the entire 512kByte upload area is probably not necessary
{
flash_region.addr = dest;
flash_sector_erase();
dest += 0x1000;
if (i%4 == 0) write_char('.');
}
print_string("Resetting now");
print_string("Done.\nResetting now");
delay(200);
reset_chip();
}