 H. Peter Anvin
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4a0966e759
abcbus: put the I/O status register (INP 1) in a separate SRAM
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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4970fb6ef6
rtc: issue dummy clock cycles if SDA appears stuck
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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a642f1f7a9
rtc: assume RTC 32 kHz is supported to work if GPIO serial not used
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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23a7324677
hdmi: slow down to 60 MHz (120 Mbaud, 96 Mbps) for testing
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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338c4e1649
fpga/abcbus: fix clear_irq signal
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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dd69eafb99
Many timing fixes; better IRQ handling for abcbus
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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c26574cc6a
i2c: fix spurious Sr condition; revert to 400 kHz
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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0dfe406919
fw: move the malloc heap to DRAM
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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54f6bd3fd6
fw: replace libc _start with a much simpler one
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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8933ef4824
test_download(): verify that .dram.bss was properly cleared
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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1506439cb0
fw: slightly more informative sdram and timer messages
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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6ae39aaf12
Make romcopy device programmable and able to zero memory
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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cb4dc0a825
fatfs: open-code Latin-1 (codepage 819)
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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0855fd5684
fw: move sdram downloader test data to assembly
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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be3a50be52
sdcard: mount disk images, Makefile/ld: infrastructure for dram data
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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df521ce35f
abcbus: fix missing clock to ABC-bus synchronizer
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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09d392bd4c
fw: use -malign-data=natural
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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d6d6390bca
Clean up _start() -- the one in libc doesn't zero bss correctly
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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6b1989fac8
fw: allow gcc to optimize memset, memcpy, and memmove
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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d37791d8a7
fw: faster memset()
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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ec99762a84
Use waitirq rather than suspending a memory transaction for SD card
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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affd869f20
Add to waitirq and "andmask" and an "ormask".
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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8f74766933
rtc: print the decoded RTC time to the console and update systime
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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56753cd6a3
abcbus: move abcbus to separate module; add I/O status register
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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69476ffdf6
Add I/O interface to the ABC bus, using SDRAM DMA
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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ef652637f0
fw: drop RTC I2C frequency to 100 kHz
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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f6f9bf7ede
Add i2c unit
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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55b0aeee3f
iodev: move one-register "devices" into a common "sys"; add "abc" device
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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e1878a396f
Detect the presence of an ABC-bus by looking for a clock signal
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%!s(int64=3) %!d(string=hai) anos |
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H. Peter Anvin
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8368aa9534
fpga: parameterize the rtc_32khz workaround
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%!s(int64=3) %!d(string=hai) anos |
