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Hi John, I managed to get redboot running on the board (without external ram) redboot has been built with (CYGOPT_REDBOOT_FIS == 0) and it is stable. I even can do: RedBoot> fconfig -i Initialize non-volatile configuration - continue (y/n)? y Run script at boot: false Console baud rate: 115200 Update RedBoot non-volatile configuration - continue (y/n)? y ... Erase from 0x08040000-0x08040fff: . ... Program from 0x20012000-0x20013000 to 0x08040000: . RedBoot> There is something strange in what I have noticed: Output with (CYGBLD_REDBOOT_LOAD_INTO_FLASH == 0): RAM: 0x20000000-0x2001f000 [0x20003a58-0x20010000 available] 0x10000000-0x10010000 [0x10000000-0x10010000 available] FLASH: 0x08000000-0x0807ffff, 4 x 0x4000 blocks, 1 x 0x10000 blocks, 3 x 0x20000 blocks RedBoot> (RedBoot is using 0x3a58 bytes of internal RAM.) Output with (CYGBLD_REDBOOT_LOAD_INTO_FLASH == 1) (nothing else was modified): RAM: 0x20000000-0x2001f000 [0x20003a88-0x1fff0000 available] 0x10000000-0x10010000 [0x10000000-0x10010000 available] FLASH: 0x08000000-0x0807ffff, 4 x 0x4000 blocks, 1 x 0x10000 blocks, 3 x 0x20000 blocks RedBoot> Notice [0x20003a88-0x1fff0000 available]: range is invalid. Any ideas why? How can I load a small .elf file (built for RAM startup) now and store it in internal flash and execute? :-) this is what happens when i do: RedBoot> load -m x C*** Abort! Attempt to load ELF data to address: 0x20000288 which is not valid xyzModem - CRC mode, 2(SOH)/0(STX)/0(CAN) packets, 3 retries RedBoot> address 0x20000288 is not valid probably because we have [0x20003a58-0x20010000 available] and 0x20000288 is occupied by redboot. What do I do? Oleg
Hi Oleg On 09/10/14 16:48, Oleg Uzenkov wrote:I have tried to run redboot on a custom board (very similar to STM32f4-discovery board, so let's say that we have discovery in question).[ snip ]I just would like to get redboot working on a board without external RAM. These are my findings so far: 1. I built redboot for ROM startup (applied relevant adjustings from stm3240g_eval's redboot_rom.ecm) 2. flashed the board with redboot at 0x08000000 3. when CYGOPT_REDBOOT_FIS == 0 redboot loads, but is very unstable, can stop working any time... But, without Flash Image System I do not see how to use redboot to load and store and run images. when CYGOPT_REDBOOT_FIS == 1 redboot hangs. It happens when do_flash_init() runs (problem in memcpy , probably illigal memory access) A question, can actually redboot work without external ram? If yes, how to fit it properly? (the board has stm32f407VE with 128+64 KB of internal ram, 512KB internal flash)Consider the output of RedBoot on STM3240G-EVAL (from your earlier message):RedBoot(tm) bootstrap and debug environment [ROM] ... Platform: ST STM3240G-EVAL (Cortex-M4) RAM: 0x64000000-0x64200000 [0x64005d30-0x641dd000 available] 0x20000000-0x2001f000 [0x20000000-0x2001f000 available] 0x10000000-0x10010000 [0x10000000-0x10010000 available] FLASH: 0x08000000-0x080fffff, 4 x 0x4000 blocks, 1 x 0x10000 blocks, 7 x 0x20000 blocks RedBoot>This shows that RedBoot is using 0x5d30 bytes of external RAM with FIS enabled. If you have ported RedBoot to your custom board correctly, I would expect it to report internal RAM usage similar, but not identical, to the following:RAM: 0x20000000-0x2001f000 [0x20005d30-0x2001f000 available]Is that what you are observing? So RedBoot should fit it available RAM quite easily. I would concentrate on tracking down the reliability issue when RedBoot is configured without the FIS first. Once you have a stable RedBoot without the FIS, you can then try enabling the FIS. I hope this helps.... John Dallaway eCos maintainer http://www.dallaway.org.uk/john
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