On Thu, Dec 18, 2025 at 06:52:51PM +0000, Kuan-Wei Chiu wrote: > Add support for the Motorola 68040 architecture. Currently, m68k > support in U-Boot is primarily focused on ColdFire (MCF5xxx) variants. > Introduce the necessary infrastructure to support the classic M680x0 > series, specifically targeting the M68040 as emulated by QEMU. > > The implementation includes exception vectors, early startup code, and > minimal CPU initialization and relocation stubs. It also defines the > standard m68k boot information structure used for passing hardware > information to the operating system. To ensure compatibility, ColdFire- > specific library objects such as cache and interrupt handling are > excluded from the build when M68040 is selected. > > Additionally, apply a specific workaround during the early memory > reservation stage. Use a manual loop to clear global data instead of > the standard memset() function, as utilizing memset() at this point was > observed to cause a hang on the QEMU platform. > > Signed-off-by: Kuan-Wei Chiu <[email protected]> [snip] > diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig > index 8ade6f7b9d1..a41c375f6be 100644 > --- a/arch/m68k/Kconfig > +++ b/arch/m68k/Kconfig > @@ -56,6 +56,9 @@ config MCF5441x > select DM_SERIAL > bool > > +config M68040 > + bool > +
The file is unfortunately inconsistent about tabs vs spaces, but all the new options should be tab-indent only, and no extra blank lines added. -- Tom
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