[U-Boot] [PATCH 00/40] x86: Add support for booting from TPL

[Bin Meng]

Hi Simon,

On Tue, Feb 12, 2019 at 11:31 PM Simon Glass <sjg at chromium.org> wrote:
>
> Hi Bin,
>
> On Wed, 30 Jan 2019 at 04:59, Simon Glass <sjg at chromium.org> wrote:
> >
> > At present SPL is used on 64-bit platforms, to allow SPL to be built as
> > a 32-bit program and U-Boot proper to be built as 64-bit.
> >
> > However it is useful to be able to use SPL on any x86 platform, where
> > U-Boot needs to be updated in the field. Then SPL can select which U-Boot
> > to run (A or B) and most of the code can be updated. Similarly, using TPL
> > allows both SPL and U-Boot to be updated. This is the best approach, since
> > it means that all of U-Boot proper as well as SPL (in particular SDRAM
> > init) can be updated in the field. This provides for the smallest possible
> > amount of read-only (non-updateable) code: just the TPL code.
> >
> > This series contains a number of changes to allow x86 boards to use TPL,
> > SPL and U-Boot proper. As a test, it is enabled for samus with a new
> > chromebook_samus_tpl board.
> >
> >
> > Simon Glass (40):
> >   binman: Don't generate an error in 'text' entry constructor
> >   binman: Don't show image-skip message by default
> >   binman: Add a missing comment in Entry_vblock
> >   dm: core: Fix translate condition in ofnode_get_addr_size()
> >   cros_ec: Use a hyphen in the uclass name
> >   spl: Allow sandbox to build a device-tree file
> >   RFC: binman: Allow sections to have an offset
> >   x86: start64: Fix copyright message
> >   x86: mp_init: Use proper error numbers
> >   x86: Add a way to reinit the cpu
> >   x86: dts: Add device-tree labels for rtc and reset
> >   x86: Update a stale comment about ifdtool
> >   x86: Support SPL and TPL
> >   x86: Support booting with TPL
> >   x86: Add a handoff header file
> >   x86: broadwell: Improve SDRAM debugging output
> >   x86: broadwell: Allow SDRAM init from SPL
> >   x86: Move init of debug UART to cpu.c
> >   x86: broadwell: Split CPU init
> >   x86: Add support for starting from SPL/TPL
> >   x86: Allow 16-bit init to be in TPL
> >   x86: broadwell: Allow booting from SPL
> >   x86: broadwell: Select refcode and CPU code for SPL
> >   x86: Add common Intel code for SPL
> >   x86: Support saving MRC data from SPL
> >   x86: Add a simple TPL implementations
> >   x86: mrccache: Add more debugging
> >   x86: Add a sysreset driver for the Intel PCH
> >   x86: Support TPL in Intel common code
> >   x86: Don't set up MTRRs in SPL
> >   x86: Don't generate a bootstage report in SPL
> >   x86: Support PCI VGA ROM when TPL is used
> >   x86: sysreset: Implement the get_last() method
> >   x86: Add documention on the samus flashmap
> >   x86: samus: Update device tree for SPL
> >   x86: samus: Update device tree for verified boot
> >   x86: Update device tree for TPL
> >   x86: Update device tree for Chromium OS verified boot
> >   x86: Fix device-tree indentation
> >   x86: samus: Add a target to boot through TPL
>
> Just checking if you have any comments on this series?

Sorry for the long delay due to Chinese new year holiday vacation. I
will look at this series soon (in fact I started reviewing the sound
series yesterday)

Regards,
Bin