On Fri, Apr 26, 2019 at 12:00 PM Simon Glass sjg@chromium.org wrote:
When a previous phase of U-Boot has run we need to adjust the init of subsequent states to avoid messing up the CPU state.
Add a new version of the start logic for SPL, when it boots from TPL (start_from tpl.c) and a new version for U-Boot when it boots from SPL.
Signed-off-by: Simon Glass sjg@chromium.org
Changes in v2:
- Add xorl to TPL code also
- Update comments in start_from_tpl to correctly explain SPL state
arch/x86/Makefile | 12 ++++++ arch/x86/cpu/Makefile | 15 +++++++- arch/x86/cpu/start_from_spl.S | 71 +++++++++++++++++++++++++++++++++++ arch/x86/cpu/start_from_tpl.S | 49 ++++++++++++++++++++++++ 4 files changed, 146 insertions(+), 1 deletion(-) create mode 100644 arch/x86/cpu/start_from_spl.S create mode 100644 arch/x86/cpu/start_from_tpl.S
Reviewed-by: Bin Meng bmeng.cn@gmail.com