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Re: [avr-gcc-list] Problems programming flash
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From: |
Martin Bammer |
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Subject: |
Re: [avr-gcc-list] Problems programming flash |
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Date: |
Mon, 7 Feb 2005 09:31:14 +0100 |
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User-agent: |
KMail/1.7.1 |
Hi!
I've put all code into the bootloader section. Fuses are correctly set (I
hope). I can't see the bug :-(
bootloader.elf :
section size addr
.data 0xb0 0x800100
.text 0xefe 0xf000
.bss 0x208 0x8001b0
.noinit 0x0 0x8003b8
.eeprom 0x0 0x810000
.stab 0x1d40 0x0
.stabstr 0xc0f 0x0
Total 0x3b05
Disassembled C-function:
uint8_t flash_wr_page(uint32_t page, uint8_t *buf)
{
f3f2: bf 92 push r11
f3f4: cf 92 push r12
f3f6: df 92 push r13
f3f8: ef 92 push r14
f3fa: ff 92 push r15
f3fc: 0f 93 push r16
f3fe: 1f 93 push r17
f400: cf 93 push r28
f402: df 93 push r29
f404: 8b 01 movw r16, r22
f406: 9c 01 movw r18, r24
f408: 6a 01 movw r12, r20
uint16_t i, w;
uint8_t sreg, ret = 0;
f40a: bb 24 eor r11, r11
sreg = SREG;
f40c: ef b6 in r14, 0x3f ; 63
cli();
f40e: f8 94 cli
eeprom_busy_wait();
f410: e1 99 sbic 0x1c, 1 ; 28
f412: fe cf rjmp .-4 ; 0xf410
boot_page_erase(page);
f414: 80 91 68 00 lds r24, 0x0068
f418: 80 fd sbrc r24, 0
f41a: fc cf rjmp .-8 ; 0xf414
f41c: e1 99 sbic 0x1c, 1 ; 28
f41e: fe cf rjmp .-4 ; 0xf41c
f420: 83 e0 ldi r24, 0x03 ; 3
f422: f8 01 movw r30, r16
f424: 20 93 5b 00 sts 0x005B, r18
f428: 80 93 68 00 sts 0x0068, r24
f42c: e8 95 spm
boot_spm_busy_wait();
f42e: 80 91 68 00 lds r24, 0x0068
f432: 99 27 eor r25, r25
f434: bc 01 movw r22, r24
f436: 61 70 andi r22, 0x01 ; 1
f438: 70 70 andi r23, 0x00 ; 0
f43a: 80 fd sbrc r24, 0
f43c: f8 cf rjmp .-16 ; 0xf42e
for (i = 0; i < SPM_PAGESIZE; i += 2) {
f43e: ab 01 movw r20, r22
f440: f1 e0 ldi r31, 0x01 ; 1
f442: ff 2e mov r15, r31
f444: e6 01 movw r28, r12
// Set up little-endian word.
w = buf[i] | (buf[i + 1] << 8);
f446: 88 81 ld r24, Y
f448: 68 2f mov r22, r24
f44a: 77 27 eor r23, r23
f44c: 89 81 ldd r24, Y+1 ; 0x01
f44e: 99 27 eor r25, r25
f450: 98 2f mov r25, r24
f452: 88 27 eor r24, r24
f454: 68 2b or r22, r24
f456: 79 2b or r23, r25
boot_page_fill(page + i, w);
f458: 80 91 68 00 lds r24, 0x0068
f45c: 80 fd sbrc r24, 0
f45e: fc cf rjmp .-8 ; 0xf458
f460: e1 99 sbic 0x1c, 1 ; 28
f462: fe cf rjmp .-4 ; 0xf460
f464: ca 01 movw r24, r20
f466: aa 27 eor r26, r26
f468: bb 27 eor r27, r27
f46a: 80 0f add r24, r16
f46c: 91 1f adc r25, r17
f46e: a2 1f adc r26, r18
f470: b3 1f adc r27, r19
f472: 0b 01 movw r0, r22
f474: fc 01 movw r30, r24
f476: a0 93 5b 00 sts 0x005B, r26
f47a: f0 92 68 00 sts 0x0068, r15
f47e: e8 95 spm
f480: 11 24 eor r1, r1
f482: 4e 5f subi r20, 0xFE ; 254
f484: 5f 4f sbci r21, 0xFF ; 255
f486: 22 96 adiw r28, 0x02 ; 2
f488: 4f 3f cpi r20, 0xFF ; 255
f48a: 51 05 cpc r21, r1
f48c: e1 f2 breq .-72 ; 0xf446
f48e: d8 f2 brcs .-74 ; 0xf446
}
boot_page_write(page); // Store buffer in flash page.
f490: 80 91 68 00 lds r24, 0x0068
f494: 80 fd sbrc r24, 0
f496: fc cf rjmp .-8 ; 0xf490
f498: e1 99 sbic 0x1c, 1 ; 28
f49a: fe cf rjmp .-4 ; 0xf498
f49c: 85 e0 ldi r24, 0x05 ; 5
f49e: f8 01 movw r30, r16
f4a0: 20 93 5b 00 sts 0x005B, r18
f4a4: 80 93 68 00 sts 0x0068, r24
f4a8: e8 95 spm
boot_spm_busy_wait();
f4aa: 80 91 68 00 lds r24, 0x0068
f4ae: 80 fd sbrc r24, 0
f4b0: fc cf rjmp .-8 ; 0xf4aa
// Reenable RWW-section again. We need this if we want to jump back
// to the application after bootloading.
boot_rww_enable();
f4b2: 80 91 68 00 lds r24, 0x0068
f4b6: 80 fd sbrc r24, 0
f4b8: fc cf rjmp .-8 ; 0xf4b2
f4ba: e1 99 sbic 0x1c, 1 ; 28
f4bc: fe cf rjmp .-4 ; 0xf4ba
f4be: 81 e1 ldi r24, 0x11 ; 17
f4c0: 80 93 68 00 sts 0x0068, r24
f4c4: e8 95 spm
f4c6: d6 01 movw r26, r12
f4c8: a9 01 movw r20, r18
f4ca: 98 01 movw r18, r16
f4cc: b6 01 movw r22, r12
f4ce: 61 50 subi r22, 0x01 ; 1
f4d0: 7f 4f sbci r23, 0xFF ; 255
for (i = 0; i < SPM_PAGESIZE; i += 2)
if (pgm_read_byte_far(page + i) != buf[i]) {
f4d2: 4b bf out 0x3b, r20 ; 59
f4d4: f9 01 movw r30, r18
f4d6: 97 91 elpm r25, Z+
f4d8: 8c 91 ld r24, X
f4da: 12 96 adiw r26, 0x02 ; 2
f4dc: 98 17 cp r25, r24
f4de: 19 f0 breq .+6 ; 0xf4e6
ret = 1;
f4e0: 11 e0 ldi r17, 0x01 ; 1
f4e2: b1 2e mov r11, r17
break;
f4e4: 07 c0 rjmp .+14 ; 0xf4f4
f4e6: 2e 5f subi r18, 0xFE ; 254
f4e8: 3f 4f sbci r19, 0xFF ; 255
f4ea: 4f 4f sbci r20, 0xFF ; 255
f4ec: 5f 4f sbci r21, 0xFF ; 255
f4ee: 6a 17 cp r22, r26
f4f0: 7b 07 cpc r23, r27
f4f2: 78 f7 brcc .-34 ; 0xf4d2
}
// Re-enable interrupts (if they were ever enabled).
SREG = sreg;
f4f4: ef be out 0x3f, r14 ; 63
return ret;
}
Fuses:
Atmel AVR ATmega128 is found.
Firmware Version: 1.14
Fuse Low Byte = 0x33
Fuse High Byte = 0xd0
Fuse Extended Byte = 0xff
Calibration Byte = 0xa7 -- Read Only
Lock Bits = 0xff
BLB12 -> 1
BLB11 -> 1
BLB02 -> 1
BLB01 -> 1
LB2 -> 1
LB1 -> 1
> Hi, Martin
>
> If you want to program flash, you have to put the procedure in boot loader
> section. The way to put the procedure to bootloader is :
>
> uint8_t BOOTLOADER_SECTION flash_wr_page(uint32_t page, uint8_t *buf)
> {
> //.....routine
> }
>
> Regards,
>
> Andi
>
>
> uint8_t flash_wr_page(uint32_t page, uint8_t *buf)
>
> ---------------------------------------------------------------------------
>----------- Hi list!
>
> I'm trying to write a bootloader for the ATMega128 in C.
> Everything works fine, but the programming of the flash.
> I've taken the subroutine from the avr-libc page which is listed below.
> The version of the avr-libc I'm using is 1.0.5 (Debian Package).
> What is wrong with the subroutine below?
>
> uint8_t flash_wr_page(uint32_t page, uint8_t *buf)
> {
> uint16_t i, w;
> uint8_t sreg, ret = 0;
>
> sreg = SREG;
> cli();
> eeprom_busy_wait();
> boot_page_erase(page);
> boot_spm_busy_wait();
> for (i = 0; i < SPM_PAGESIZE; i += 2) {
> // Set up little-endian word.
> w = buf[i] | (buf[i + 1] << 8);
> boot_page_fill(page + i, i);
> }
> boot_page_write(page); // Store buffer in flash page.
> boot_spm_busy_wait();
>
> // Reenable RWW-section again. We need this if we want to jump back
> // to the application after bootloading.
> boot_rww_enable();
>
> for (i = 0; i < SPM_PAGESIZE; i += 2)
> if (pgm_read_byte_far(page + i) != buf[i]) {
> ret = 1;
> break;
> }
>
> // Re-enable interrupts (if they were ever enabled).
> SREG = sreg;
> return ret;
> }
>
> Cheers, Martin
Re: [avr-gcc-list] Problems programming flash, Martin Bammer, 2005/02/07