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Ronald G. Minnich eeb83b6b53 linux_trampoline: use trampoline RAM for the GDT 
The linux trampoline was modifying the existing GDT
to add the 0x10 and 0x18 descriptors for Linux.
This will not work when the existing GDT is in ROM.

Change the code to set up a new GDT in what we know to be
RAM.

Tested by booting a linux payload. The main reason this works
is that Linux almost immediately loads its own GDT and then
segment registers. This GDT is a very temporary bridge.

Note that none of this change used to be necessary; the coreboot
GDT was originally compatible with Linux (ca 2000);
then Linux changed.

Change-Id: I13990052fbfd6a500adab8a2db8f7aead1d24fa6
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: https://review.coreboot.org/27529
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
 		2018-07-18 21:32:26 +00:00
..
abuild util/abuild: Enable abuild to compile a single variant 2018-06-25 17:41:26 +00:00
acpi tree: drop last paragraph of GPL copyright header 2015-10-31 21:37:39 +01:00
amdfwtool util/amdfwtool/amdfwtool.c: Check fstat return 2018-02-22 09:59:40 +00:00
amdtools
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archive
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arm_boot_tools/mksunxiboot
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autoport src: Get rid of unneeded whitespace 2018-06-14 09:32:34 +00:00
bimgtool
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bincfg util/bincfg: don't use fp shared variable 2018-01-23 05:21:48 +00:00
board_status util/docker/coreboot.org-status: collect report generators 2018-06-14 08:45:24 +00:00
broadcom util/broadcom/secimage: Add distclean target 2018-02-10 23:49:58 +00:00
cavium util/cavium: Add tool to convert devicetree blobs 2018-07-09 09:54:22 +00:00
cbfstool linux_trampoline: use trampoline RAM for the GDT 2018-07-18 21:32:26 +00:00
cbmem util/cbmem: Fix compare function for qsort 2018-05-18 20:13:47 +00:00
checklist
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chromeos
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crossgcc util/crossgcc: update to gcc 8.1.0 and binutils 2.30 2018-06-28 13:38:13 +00:00
docker util/docker: Update coreboot-jenkins-node dockerfile 2018-07-17 11:38:55 +00:00
dtd_parser
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ectool ectool: Add an option to get and use EC ports from /proc/ioports 2018-04-19 16:30:23 +00:00
exynos
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futility
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fuzz-tests
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genbuild_h util/genbuild_h: Add gitfile support 2018-01-23 05:33:02 +00:00
genprof
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gitconfig checkpatch: exclude util/crossgcc/patches 2018-05-30 17:12:00 +00:00
ifdfake
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ifdtool util/ifdtool: Remove .dependencies on make clean 2018-06-04 09:38:25 +00:00
intelmetool src: Get rid of unneeded whitespace 2018-06-14 09:32:34 +00:00
inteltool inteltool: Add PCI IDs for the C220 PCH series 2018-06-21 17:39:48 +00:00
intelvbttool
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ipqheader util/*: Fix final newlines in scripts 2018-01-23 05:17:44 +00:00
k8resdump util/*: don't strip executables 2017-10-29 08:48:56 +00:00
kbc1126
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kconfig {src,util}: Use NULL instead of 0 for pointer 2018-06-11 08:52:08 +00:00
lint util/lint: Update lint-stable-000-license-headers linter 2018-07-06 15:31:51 +00:00
marvell util/marvell: Add Marvell doimage utility and dependency in relevant Makefile 2016-02-11 14:16:08 +01:00
me_cleaner sb/intel/common/firmware: Enable me_cleaner for Nehalem 2018-06-25 08:19:16 +00:00
mma
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msrtool util/msrtool: Add Pentium D support 2018-06-04 02:30:03 +00:00
mtkheader mediatek/mt8183: Add a stub implementation of the MT8183 SOC 2018-06-11 10:30:59 +00:00
nvidia
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nvramtool util/cbfstool: Support FIT payloads 2018-06-15 09:13:24 +00:00
post
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qualcomm/scripts/cmm util/qualcomm: Add T32 debug scripts 2018-04-27 09:21:11 +00:00
release util/release/genrelnotes: Add "sifive" search pattern 2018-05-05 15:24:45 +00:00
riscv src/sifive: Add the SiFive Freedom Unleashed 540 SoC 2018-04-26 11:52:37 +00:00
rockchip
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romcc src: Get rid of unneeded whitespace 2018-06-14 09:32:34 +00:00
sconfig util/sconfig: Get rid of ops from struct device 2018-06-25 17:40:46 +00:00
scripts kconfig: add script to manipulate .config files on the command line 2018-06-12 07:43:15 +00:00
showdevicetree sconfig: Add a new mmio resource type 2018-01-25 16:50:17 +00:00
spkmodem_recv
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superiotool util/superiotool: Remove whitespace before tab 2018-06-04 09:10:32 +00:00
testing what-jenkins-does: Pass V=1 through to abuild 2018-07-18 12:19:46 +00:00
uio_usbdebug
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vgabios src: Get rid of unneeded whitespace 2018-06-14 09:32:34 +00:00
viatool
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x86 util/x86/x86_page_tables: add command line to generated files 2018-04-27 03:25:28 +00:00
xcompile util/xcompile: prefer riscv64 over riscv 2018-05-09 10:00:32 +00:00