boot-qemu.sh: Add support for earlycon#40
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There is currently a crash on -next for RISC-V that is not visible without this. For all ARM architectures supported with this script, just "earlycon" works because the device trees have support for the console and baud rates. RISC-V is the same way. x86 needs the type of I/O and address. ttyS0 is 0x3f8 (arch/x86/boot/early_serial_console.c) and we do regular I/O. The baud rate works with the default so it is omitted. MIPS already has earlycon enabled. I cannot find any research on earlycon on PowerPC or s390 so they are omitted. Signed-off-by: Nathan Chancellor <nathan@kernel.org>
nathanchance
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msfjarvis,
nickdesaulniers and
tpimh
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tpimh
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Mar 24, 2021
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There is currently a crash on -next for RISC-V that is not visible
without this. For all ARM architectures supported with this script, just
"earlycon" works because the device trees have support for the console
and baud rates. RISC-V is the same way. x86 needs the type of I/O and
address. ttyS0 is 0x3f8 (arch/x86/boot/early_serial_console.c) and we
do regular I/O. The baud rate works with the default so it is omitted.
MIPS already has earlycon enabled.
I cannot find any research on earlycon on PowerPC or s390 so they are
omitted.