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authorCristian Maglie <c.maglie@bug.st>2012-06-27 13:51:16 +0200
committerCristian Maglie <c.maglie@bug.st>2012-06-27 13:51:16 +0200
commit2d2050eabeaff7109ba89fdd0100556c981cf373 (patch)
tree1f6d9725b59aa02e5400a8117eeec3206d88047d /bootloaders/diskloader/src/DiskLoader.cpp
parent324023a67afd1691f12ead4388d7cdf1a9d1a6ef (diff)
parent31c24577835b0a9c7a1291ffbda1b61d96818511 (diff)
Merged master
Diffstat (limited to 'bootloaders/diskloader/src/DiskLoader.cpp')
-rw-r--r--bootloaders/diskloader/src/DiskLoader.cpp239
1 files changed, 0 insertions, 239 deletions
diff --git a/bootloaders/diskloader/src/DiskLoader.cpp b/bootloaders/diskloader/src/DiskLoader.cpp
deleted file mode 100644
index 6580618..0000000
--- a/bootloaders/diskloader/src/DiskLoader.cpp
+++ /dev/null
@@ -1,239 +0,0 @@
-
-
-#include "Platform.h"
-
-// This bootloader creates a composite Serial device
-//
-// The serial interface supports a STK500v1 protocol that is very similar to optiboot
-//
-// The bootloader will timeout and start the firmware after a few hundred milliseconds
-// if a usb connection is not detected.
-//
-// The tweakier code is to keep the bootloader below 2k (no interrupt table, for example)
-
-extern "C"
-void entrypoint(void) __attribute__ ((naked)) __attribute__ ((section (".vectors")));
-void entrypoint(void)
-{
- asm volatile (
- "eor r1, r1\n" // Zero register
- "out 0x3F, r1\n" // SREG
- "ldi r28, 0xFF\n"
- "ldi r29, 0x0A\n"
- "out 0x3E, r29\n" // SPH
- "out 0x3D, r28\n" // SPL
- "rjmp main" // Stack is all set up, start the main code
- ::);
-}
-
-u8 _flashbuf[128];
-u8 _inSync;
-u8 _ok;
-extern volatile u8 _ejected;
-extern volatile u16 _timeout;
-
-void Program(u8 ep, u16 page, u8 count)
-{
- u8 write = page < 30*1024; // Don't write over firmware please
- if (write)
- boot_page_erase(page);
-
- Recv(ep,_flashbuf,count); // Read while page is erasing
-
- if (!write)
- return;
-
- boot_spm_busy_wait(); // Wait until the memory is erased.
-
- count >>= 1;
- u16* p = (u16*)page;
- u16* b = (u16*)_flashbuf;
- for (u8 i = 0; i < count; i++)
- boot_page_fill(p++, b[i]);
-
- boot_page_write(page);
- boot_spm_busy_wait();
- boot_rww_enable ();
-}
-
-
-int USBGetChar();
-#define getch USBGetChar
-
-#define HW_VER 0x02
-#define SW_MAJOR 0x01
-#define SW_MINOR 0x10
-
-#define STK_OK 0x10
-#define STK_INSYNC 0x14 // ' '
-#define CRC_EOP 0x20 // 'SPACE'
-#define STK_GET_SYNC 0x30 // '0'
-
-#define STK_GET_PARAMETER 0x41 // 'A'
-#define STK_SET_DEVICE 0x42 // 'B'
-#define STK_SET_DEVICE_EXT 0x45 // 'E'
-#define STK_LOAD_ADDRESS 0x55 // 'U'
-#define STK_UNIVERSAL 0x56 // 'V'
-#define STK_PROG_PAGE 0x64 // 'd'
-#define STK_READ_PAGE 0x74 // 't'
-#define STK_READ_SIGN 0x75 // 'u'
-
-extern const u8 _readSize[] PROGMEM;
-const u8 _readSize[] =
-{
- STK_GET_PARAMETER, 1,
- STK_SET_DEVICE, 20,
- STK_SET_DEVICE_EXT, 5,
- STK_UNIVERSAL, 4,
- STK_LOAD_ADDRESS, 2,
- STK_PROG_PAGE, 3,
- STK_READ_PAGE, 3,
- 0,0
-};
-
-extern const u8 _consts[] PROGMEM;
-const u8 _consts[] =
-{
- SIGNATURE_0,
- SIGNATURE_1,
- SIGNATURE_2,
- HW_VER, // Hardware version
- SW_MAJOR, // Software major version
- SW_MINOR, // Software minor version
- 0x03, // Unknown but seems to be required by avr studio 3.56
- 0x00, //
-};
-
-
-void USBInit(void);
-int main(void) __attribute__ ((naked));
-
-// STK500v1 main loop, very similar to optiboot in protocol and implementation
-int main()
-{
- wdt_disable();
- TXLED0;
- RXLED0;
- LED0;
- BOARD_INIT();
- USBInit();
-
- _inSync = STK_INSYNC;
- _ok = STK_OK;
-
- if (pgm_read_word(0) != -1)
- _ejected = 1;
-
- for(;;)
- {
- u8* packet = _flashbuf;
- u16 address = 0;
- for (;;)
- {
- u8 cmd = getch();
-
- // Read packet contents
- u8 len;
- const u8* rs = _readSize;
- for(;;)
- {
- u8 c = pgm_read_byte(rs++);
- len = pgm_read_byte(rs++);
- if (c == cmd || c == 0)
- break;
- }
- _timeout = 0;
- // Read params
- Recv(CDC_RX,packet,len);
-
- // Send a response
- u8 send = 0;
- const u8* pgm = _consts+7; // 0
- if (STK_GET_PARAMETER == cmd)
- {
- u8 i = packet[0] - 0x80;
- if (i > 2)
- i = (i == 0x18) ? 3 : 4; // 0x80:HW_VER,0x81:SW_MAJOR,0x82:SW_MINOR,0x18:3 or 0
- pgm = _consts + i + 3;
- send = 1;
- }
-
- else if (STK_UNIVERSAL == cmd)
- {
- if (packet[0] == 0x30)
- pgm = _consts + packet[2]; // read signature
- send = 1;
- }
-
- // Read signature bytes
- else if (STK_READ_SIGN == cmd)
- {
- pgm = _consts;
- send = 3;
- }
-
- else if (STK_LOAD_ADDRESS == cmd)
- {
- address = *((u16*)packet); // word addresses
- address += address;
- }
-
- else if (STK_PROG_PAGE == cmd)
- {
- Program(CDC_RX,address,packet[1]);
- }
-
- else if (STK_READ_PAGE == cmd)
- {
- send = packet[1];
- pgm = (const u8*)address;
- address += send; // not sure of this is required
- }
-
- // Check sync
- if (getch() != ' ')
- break;
- Transfer(CDC_TX,&_inSync,1);
-
- // Send result
- if (send)
- Transfer(CDC_TX|TRANSFER_PGM,pgm,send); // All from pgm memory
-
- // Send ok
- Transfer(CDC_TX|TRANSFER_RELEASE,&_ok,1);
-
- if (cmd == 'Q')
- break;
- }
- _timeout = 500; // wait a moment before exiting the bootloader - may need to finish responding to 'Q' for example
- _ejected = 1;
- }
-}
-
-// Nice breathing LED indicates we are in the firmware
-u16 _pulse;
-void LEDPulse()
-{
- _pulse += 4;
- u8 p = _pulse >> 9;
- if (p > 63)
- p = 127-p;
- p += p;
- if (((u8)_pulse) > p)
- LED0;
- else
- LED1;
-}
-
-void Reboot()
-{
- TXLED0; // switch off the RX and TX LEDs before starting the user sketch
- RXLED0;
- UDCON = 1; // Detatch USB
- UDIEN = 0;
- asm volatile ( // Reset vector to run firmware
- "clr r30\n"
- "clr r31\n"
- "ijmp\n"
- ::);
-}