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Patrick Rudolph 2fdabd9038 smmstore: Verify userspace-provided pointer to protect SMM 
Use the introduced functions and verify pointers in the SMMSTORE.
Make sure to not overwrite or leak data from SMM and update the
documentation as well.

Change-Id: I70df08657c3fa0f98917742d8e1a6cb1077e3758
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Christian Walter <christian.walter@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41085
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
 		2020-06-17 09:18:05 +00:00
..
Intel mb,soc/intel: Rename acpi_fill_in_fadt() to acpi_fill_fadt() 2020-06-07 21:45:45 +00:00
RFC Documentation/RFC: Drop obsolete doc 2019-10-07 01:08:55 +00:00
_static
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acpi Documentation/acpi: Fix the path to variants/hatch/overridetree.cb 2020-05-26 14:58:35 +00:00
arch arch/riscv: Pass cbmem_top to ramstage via calling argument 2019-11-10 11:46:10 +00:00
community Documentation: Add our issue tracker to services 2019-10-07 01:08:40 +00:00
contributing documentation: Add documentation ideas for season of docs 2020-05-01 13:47:06 +00:00
doxygen
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drivers smmstore: Verify userspace-provided pointer to protect SMM 2020-06-17 09:18:05 +00:00
flash_tutorial Documentation: Use inline code block for kernel parameter 2020-02-19 12:09:53 +00:00
getting_started Documentation: Encourage documentation with code changes 2020-05-20 08:44:26 +00:00
gfx drivers/intel/gma: Add override for presence straps 2020-05-20 23:38:05 +00:00
ifdtool Documentation: ifdtool/layout: use real table for FD regions 2020-02-17 20:08:41 +00:00
lib fw_config: Add firmware configuration interface 2020-06-02 16:40:04 +00:00
mainboard Doc/mb/gigabyte/ga-h61m-s2pv: Fix in-circuit programming 2020-06-06 20:13:34 +00:00
northbridge Documentation: Add tutorial for me_cleaner on Lenovo devices 2020-03-02 11:39:05 +00:00
releases Documentation: Add section about SPD tools for TGL and JSL 2020-06-10 18:39:15 +00:00
security cpu/x86/smm: Add helper functions to verify SMM access 2020-06-17 09:17:56 +00:00
soc soc/amd/picasso/Makefile: Use apcb_tool to generate APCBs from SPDs 2020-05-18 07:40:51 +00:00
superio superio/nuvoton/nct5539d: Update documentation and remove DSDT 2020-03-11 15:03:39 +00:00
technotes Documentation/tutorial: Add tutorial for writing unit tests 2020-05-30 08:46:59 +00:00
tutorial Documentation/tutorial: Add tutorial for writing unit tests 2020-05-30 08:46:59 +00:00
vendorcode Documentation/vendorcode/eltan: Update security document 2020-01-30 13:28:24 +00:00
AMD-S3.txt
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COPYING
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Doxyfile.coreboot
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Doxyfile.coreboot_simple
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Makefile
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Makefile.sphinx
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POSTCODES
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beginverbatim.tex
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cbfs.txt
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codeflow.svg
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coding_style.md Documentation/coding_style.md: Update line length limit 2019-09-04 10:54:41 +00:00
conf.py Documentation: enable ditaa integration 2019-12-12 08:18:49 +00:00
corebootBuildingGuide.tex
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coreboot_logo.png
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distributions.md docs/distributions: remove entry for John Lewis' ROMs 2019-08-02 09:59:44 +00:00
endverbatim.tex
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gcov.txt
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hypertransport.svg
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index.md documentation: Add documentation ideas for season of docs 2020-05-01 13:47:06 +00:00
mainboard_io_trap_handler_sample.c treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
payloads.md Documentation: Add Heads to payloads 2020-03-02 11:39:16 +00:00
util.md Doc,util: Update list of utilities 2020-04-20 06:55:49 +00:00