Hi Simon, On Wed, Apr 7, 2021 at 12:33 PM Simon Glass <[email protected]> wrote: > > Add information about memory usage when U-Boot is started from coreboot. > This is useful when debugging. Also, since coreboot takes a chunk of > memory in the middle of SDRAM for use by PCI devices, it can help avoid > overwriting this with a loaded kernel by accident. > > Signed-off-by: Simon Glass <[email protected]> > --- > > doc/board/coreboot/coreboot.rst | 19 +++++++++++++++++++ > 1 file changed, 19 insertions(+) > > diff --git a/doc/board/coreboot/coreboot.rst b/doc/board/coreboot/coreboot.rst > index 9c44c025a48..e791b7e39f0 100644 > --- a/doc/board/coreboot/coreboot.rst > +++ b/doc/board/coreboot/coreboot.rst > @@ -50,3 +50,22 @@ works by using a 32-bit SPL binary to switch to 64-bit for > running U-Boot. It > can be useful for running UEFI applications, for example. > > This has only been lightly tested. > + > + > +Memory map > +---------- > + > +::
Can we use the reST table syntax for the following table? > + > + ffffffff Top of ROM (and last byte of 32-bit address space) > + 7a9fd000 Typical top of memory available to U-Boot > + (use cbsysinfo to see where memory range 'table' starts) > + 10000000 Memory reserved by coreboot for mapping PCI devices > + (typical size 2151000, includes framebuffer) > + 1920000 CONFIG_SYS_CAR_ADDR, fake Cache-as-RAM memory, used during > startup > + 1110000 CONFIG_SYS_TEXT_BASE (start address of U-Boot code, before > reloc) > + 110000 CONFIG_BLOBLIST_ADDR (before being relocated) > + 100000 CONFIG_PRE_CON_BUF_ADDR > + f0000 ACPI tables set up by U-Boot > + (typically redirects to 7ab10030 or similar) > + 500 Location of coreboot sysinfo table, used during startup > -- Regards, Bin
