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riscv-openocd/contrib/loaders/flash/fespi/riscv_wrapper.S

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Redo fespi flash algorithm (#384) * WIP, rewrite of flash algorithm. Just put all the flashing logic into the algorithm, instead of using an intermediate format. This should reduce total data written while flashing by about 9%, and also makes the code much simpler. Change-Id: I807e60c8ab4f9f376cceaecdbbd10a2326be1c79 * New algorithm works. Speeds up Arty flashing another 9%. wrote 2228224 bytes from file /media/sf_tnewsome/SiFive/arty_images/arty.E21TraceFPGAEvaluationConfig.mcs in 86.784538s (25.074 KiB/s) verified 2192012 bytes in 6.693336s (319.816 KiB/s) 8.66user 13.03system 1:33.91elapsed 23%CPU (0avgtext+0avgdata 12272maxresident)k Change-Id: Ie55c5250d667251be141cb32b144bbcf3713fce4 * Fix whitespace. Change-Id: I338d518fa11a108efb530ffe75a2030619457a0b * Don't reserve so much stack space. Also properly check XLEN in riscv_wrapper.S. Change-Id: Ifa0301f3ea80f648fb8a6d6b6c8bf39f386fe4a6
2019-07-09 12:05:07 -05:00
#if __riscv_xlen == 64
# define LREG ld
# define SREG sd
# define REGBYTES 8
#else
# define LREG lw
# define SREG sw
# define REGBYTES 4
#endif
.section .text.entry
.global _start
_start:
The stack is relative to the program. (#409) Just like everything else. Fixes flashing on targets that don't have RAM at 0x80000000. Change-Id: Ibf423c95ba333660e760d5110f5ce2375c1b762c
2019-09-23 17:51:17 -05:00
/* Spell out `la sp, stack_end` because otherwise the assembler won't
generate position-independent code. */
1: auipc sp, %pcrel_hi(stack_end) # load stack_end(hi)
addi sp, sp, %pcrel_lo(1b) # load stack_end(lo)
Fix flashing HiFive Unleashed (#402) * Align algorithm stack to XLEN. This fixes algorithm timeout on RV64 targets. Also improve debug information in various places. Change-Id: Id3121f9c6e753c6a7e14da511e4de0587a6f7b4d * Compile 32-bit RISC-V algorithms for RV32E. Change-Id: I33a698c0c6ba540de29fa0459242c72a67b0cbaa * Remove debug code. Change-Id: I37c966ce0f2d1fe68cd6ae0724d19ae95ebaf51b * Dump start of gdb packets escaping non-printable. Change-Id: Ie5f36b5c9041bfc0e5aa9543f0afe2c4810c2915 * Propagate flash programming errors. Change-Id: I0c938ce7a1062bcc93426538cbc82424000f37b7 * Improve debug messaging. Change-Id: I47ac3518f3b241986c677824864102936100adf6 * Add debug output to flash image. This is helpful when you're debugging the flash algorithm itself, and a nop when running it through OpenOCD. Change-Id: Id44c6498c288872cc2cec79044116ac38198c572 * Make timeout depend on how much data is written. Change-Id: I819efa04cd6f6bd6664afd5c53cc7a8a5c84f54e * Fix issi erase commands. This is required to flash HiFive Unleashed. Change-Id: I33e4869d1d05ca8a1df6136bccf11afda61bfe10 * Fix running algorithm on multicore `-rtos riscv`. The bug was that poll() might change the currently selected hart, and in that case we'd access registers on that other hart after the algorithm is finished. Change-Id: I140431898285cf471b372139cef2378ab4879377 * Make fespi flash algorithm debugging optional. Also add a scheme that allows you to see the stack trace of where a failure occurred if debugging is enabled. Change-Id: Ia9a3a9a941ceba0f8ff6b47da5a8643e5f84b252
2019-09-09 14:01:17 -05:00
jal flash_fespi
Redo fespi flash algorithm (#384) * WIP, rewrite of flash algorithm. Just put all the flashing logic into the algorithm, instead of using an intermediate format. This should reduce total data written while flashing by about 9%, and also makes the code much simpler. Change-Id: I807e60c8ab4f9f376cceaecdbbd10a2326be1c79 * New algorithm works. Speeds up Arty flashing another 9%. wrote 2228224 bytes from file /media/sf_tnewsome/SiFive/arty_images/arty.E21TraceFPGAEvaluationConfig.mcs in 86.784538s (25.074 KiB/s) verified 2192012 bytes in 6.693336s (319.816 KiB/s) 8.66user 13.03system 1:33.91elapsed 23%CPU (0avgtext+0avgdata 12272maxresident)k Change-Id: Ie55c5250d667251be141cb32b144bbcf3713fce4 * Fix whitespace. Change-Id: I338d518fa11a108efb530ffe75a2030619457a0b * Don't reserve so much stack space. Also properly check XLEN in riscv_wrapper.S. Change-Id: Ifa0301f3ea80f648fb8a6d6b6c8bf39f386fe4a6
2019-07-09 12:05:07 -05:00
ebreak
.section .data
Fix flashing HiFive Unleashed (#402) * Align algorithm stack to XLEN. This fixes algorithm timeout on RV64 targets. Also improve debug information in various places. Change-Id: Id3121f9c6e753c6a7e14da511e4de0587a6f7b4d * Compile 32-bit RISC-V algorithms for RV32E. Change-Id: I33a698c0c6ba540de29fa0459242c72a67b0cbaa * Remove debug code. Change-Id: I37c966ce0f2d1fe68cd6ae0724d19ae95ebaf51b * Dump start of gdb packets escaping non-printable. Change-Id: Ie5f36b5c9041bfc0e5aa9543f0afe2c4810c2915 * Propagate flash programming errors. Change-Id: I0c938ce7a1062bcc93426538cbc82424000f37b7 * Improve debug messaging. Change-Id: I47ac3518f3b241986c677824864102936100adf6 * Add debug output to flash image. This is helpful when you're debugging the flash algorithm itself, and a nop when running it through OpenOCD. Change-Id: Id44c6498c288872cc2cec79044116ac38198c572 * Make timeout depend on how much data is written. Change-Id: I819efa04cd6f6bd6664afd5c53cc7a8a5c84f54e * Fix issi erase commands. This is required to flash HiFive Unleashed. Change-Id: I33e4869d1d05ca8a1df6136bccf11afda61bfe10 * Fix running algorithm on multicore `-rtos riscv`. The bug was that poll() might change the currently selected hart, and in that case we'd access registers on that other hart after the algorithm is finished. Change-Id: I140431898285cf471b372139cef2378ab4879377 * Make fespi flash algorithm debugging optional. Also add a scheme that allows you to see the stack trace of where a failure occurred if debugging is enabled. Change-Id: Ia9a3a9a941ceba0f8ff6b47da5a8643e5f84b252
2019-09-09 14:01:17 -05:00
.balign REGBYTES
Redo fespi flash algorithm (#384) * WIP, rewrite of flash algorithm. Just put all the flashing logic into the algorithm, instead of using an intermediate format. This should reduce total data written while flashing by about 9%, and also makes the code much simpler. Change-Id: I807e60c8ab4f9f376cceaecdbbd10a2326be1c79 * New algorithm works. Speeds up Arty flashing another 9%. wrote 2228224 bytes from file /media/sf_tnewsome/SiFive/arty_images/arty.E21TraceFPGAEvaluationConfig.mcs in 86.784538s (25.074 KiB/s) verified 2192012 bytes in 6.693336s (319.816 KiB/s) 8.66user 13.03system 1:33.91elapsed 23%CPU (0avgtext+0avgdata 12272maxresident)k Change-Id: Ie55c5250d667251be141cb32b144bbcf3713fce4 * Fix whitespace. Change-Id: I338d518fa11a108efb530ffe75a2030619457a0b * Don't reserve so much stack space. Also properly check XLEN in riscv_wrapper.S. Change-Id: Ifa0301f3ea80f648fb8a6d6b6c8bf39f386fe4a6
2019-07-09 12:05:07 -05:00
stack:
.fill 16, REGBYTES, 0x8675309
stack_end: