Marshall Dawson has uploaded a new patch set (#13) to the change originally created by Martin Roth. ( https://review.coreboot.org/c/coreboot/+/32414 )
Change subject: x86: Implement RESET_VECTOR_IN_DRAM option ......................................................................
x86: Implement RESET_VECTOR_IN_DRAM option
Create a new Kconfig symbol that allows an x86 device to begin execution when its reset vector is in DRAM and not at the traditional 0xfffffff0.
This implementation assumes the soc or x86 code: * Builds on existing coreboot romstage infrastructure * Implements its own custom assembly entry * Provides all additional symbols and helpers required for linking
Because romstage features are used but the code is in DRAM, do not create a stage from romstage.elf, and do not include a stage into coreboot.rom. It is left to the soc or x86 implementation to best determine how to place the code in DRAM in time for the x86 to begin executing it at reset.
TEST=None BUG=b:130804851
Signed-off-by: Marshall Dawson marshalldawson3rd@gmail.com Change-Id: I678b1f74546ea30abcc655a0daed795d6cfa0034 --- M Makefile.inc M src/Kconfig M src/arch/x86/Makefile.inc M src/arch/x86/memlayout.ld M src/cpu/x86/32bit/entry32.inc M src/include/rules.h 6 files changed, 21 insertions(+), 3 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/14/32414/13