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SummerCart64/sw/bootloader/src/ipl2.S

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[SC64][FW][HW][SW] New version based on LCMXO2 FPGA (#19) * isv support + usb/dd improvements * make room for saves * update offset * fixed debug address * idk * exception * ironed out all broken stuff * cleanup * return epc fix * better * more cleanup * even more cleanup * mooore cleanup * fixed printf * no assert * improved docker build, pyft232 instead of pyserial * fixed displaying long message strings description test * just straight cleanup * smallest cleanup * PAL * cpu buffer * n64 bootloader done * super slow usb storage reading implemented * reduced buffer size * usb gets fast * little cleanup * double buffered reads * removed separate event id * ISV in hardware finally * small exception changes * mac testing * py spacing * fsd write, rtc, isv and reset fixes * fixxx * good stopping point * usb fixed? * pretend we have 128 MB sdram * backup * chmod * test * test done * more tests * user rm * help * final fix * updated component values * nice asset names * cic 64dd support * ddipl enable separation * pre DMA rewrite, created dedicated buffer memory space, simplified code * dma rewrite, needs testing * moved xml * dd basics * timing * 64dd working yet again, isv brought back, dma fixes, usb path rewrite, pc code rewrite * added usb read functionality, general cleanup * changed mem addressing * added fpga flash update access * added mcu update * chmod * little cleanup * update format and stuff * fixes * uninitialized fix * small fixes * update fixes * update stuff done * fpga update tested * build time fix * boot fix * test timing * readme test * test 2 * reports * testseet * final * build test * forgot * button and naming * General cleanup And multiline commit message test * Exception screen UI touch ups * display separation and tests beginning * pc software update * pc software done * timing test * delete launch.json * sw fixes * fixed button hole diameter in shell * small cleanup, rpi testing * shell fillet fix, pc rtc printing * added cfg lock mechanism * moved lock to cfg address space * extended ROM and ISV fixes * preliminary sd card support * little sd card cleanup * sd menu fixes * 5 second limit * reduced shell thickness * basic led act blinking * faster sd menu loading * inst cache invalidate * sd card writing is working * SD card CSD and CID registers * wait for previous command * led error codes * fixed cfg_translate_address use * 64dd from sd card working * 64dd speedup and button handling * delayed address latching cycle - might break other builds, needs testing * bootloader improvements * small fixes * return previous cfg when setting new * cache stuff * unfloader debug protocol support * UNFLoader style debug command line support * requirements.txt * shell groove fillet * reset state inside controller * fixed fast PI read, added PI R/W fifo debug info * PI access prioritize * SD clock stop when RX FIFO is more than half full * flash erase method change * CFG error handling, TLOZ MM debug ISV support * CIC5167 support * general fixes * USB unplugged cable handling * turn off led when changing between error/act modes * rtc 2 bit clock stop support * line endings * Revert "line endings" This reverts commit d0ddfe5ec716d2db7c72561703f51a94bf34e6bb. * PI address debug * readme test * diagram update * diagram background * diagram background * diagram background * updated readme
2022-11-10 11:46:54 +01:00
.set noat
.set noreorder
[SC64][SW] Added board bring-up via UART header (#20) * [SC64][SW] Added board bring-up via UART header * [SC64][SW] Made I2C in primer stable * [SC64][SW] LCMXO2 primer fixes * [SC64][SW] SC64 primer PC software * [SC64][SW] Added primer.py to release package * [SC64][SW] Fixed FPGA refresh * [SC64][SW] Changed release package contents
2023-01-21 04:08:15 +01:00
[SC64][SW] Bootloader fixes
2023-01-30 05:55:15 +01:00
.section .text.ipl2, "ax", %progbits
.type ipl2, %object
[SC64][FW][HW][SW] New version based on LCMXO2 FPGA (#19) * isv support + usb/dd improvements * make room for saves * update offset * fixed debug address * idk * exception * ironed out all broken stuff * cleanup * return epc fix * better * more cleanup * even more cleanup * mooore cleanup * fixed printf * no assert * improved docker build, pyft232 instead of pyserial * fixed displaying long message strings description test * just straight cleanup * smallest cleanup * PAL * cpu buffer * n64 bootloader done * super slow usb storage reading implemented * reduced buffer size * usb gets fast * little cleanup * double buffered reads * removed separate event id * ISV in hardware finally * small exception changes * mac testing * py spacing * fsd write, rtc, isv and reset fixes * fixxx * good stopping point * usb fixed? * pretend we have 128 MB sdram * backup * chmod * test * test done * more tests * user rm * help * final fix * updated component values * nice asset names * cic 64dd support * ddipl enable separation * pre DMA rewrite, created dedicated buffer memory space, simplified code * dma rewrite, needs testing * moved xml * dd basics * timing * 64dd working yet again, isv brought back, dma fixes, usb path rewrite, pc code rewrite * added usb read functionality, general cleanup * changed mem addressing * added fpga flash update access * added mcu update * chmod * little cleanup * update format and stuff * fixes * uninitialized fix * small fixes * update fixes * update stuff done * fpga update tested * build time fix * boot fix * test timing * readme test * test 2 * reports * testseet * final * build test * forgot * button and naming * General cleanup And multiline commit message test * Exception screen UI touch ups * display separation and tests beginning * pc software update * pc software done * timing test * delete launch.json * sw fixes * fixed button hole diameter in shell * small cleanup, rpi testing * shell fillet fix, pc rtc printing * added cfg lock mechanism * moved lock to cfg address space * extended ROM and ISV fixes * preliminary sd card support * little sd card cleanup * sd menu fixes * 5 second limit * reduced shell thickness * basic led act blinking * faster sd menu loading * inst cache invalidate * sd card writing is working * SD card CSD and CID registers * wait for previous command * led error codes * fixed cfg_translate_address use * 64dd from sd card working * 64dd speedup and button handling * delayed address latching cycle - might break other builds, needs testing * bootloader improvements * small fixes * return previous cfg when setting new * cache stuff * unfloader debug protocol support * UNFLoader style debug command line support * requirements.txt * shell groove fillet * reset state inside controller * fixed fast PI read, added PI R/W fifo debug info * PI access prioritize * SD clock stop when RX FIFO is more than half full * flash erase method change * CFG error handling, TLOZ MM debug ISV support * CIC5167 support * general fixes * USB unplugged cable handling * turn off led when changing between error/act modes * rtc 2 bit clock stop support * line endings * Revert "line endings" This reverts commit d0ddfe5ec716d2db7c72561703f51a94bf34e6bb. * PI address debug * readme test * diagram update * diagram background * diagram background * diagram background * updated readme
2022-11-10 11:46:54 +01:00
ipl2:
.global ipl2
lui $t5, 0xBFC0
1:
lw $t0, 0x7FC($t5)
addiu $t5, $t5, 0x7C0
andi $t0, $t0, 0x80
bnel $t0, $zero, 1b
lui $t5, 0xBFC0
lw $t0, 0x24($t5)
lui $t3, 0xB000
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