Patrick Rudolph bc744f5893 drivers/smmstore: Implement SMMSTORE version 2 ... SMMSTORE version 2 is a complete redesign of the current driver. It is not backwards-compatible with version 1, and only one version can be used at a time. Key features: * Uses a fixed communication buffer instead of writing to arbitrary memory addresses provided by untrusted ring0 code. * Gives the caller full control over the used data format. * Splits the store into smaller chunks to allow fault tolerant updates. * Doesn't provide feedback about the actual read/written bytes, just returns error or success in registers. * Returns an error if the requested operation would overflow the communication buffer. Separate the SMMSTORE into 64 KiB blocks that can individually be read/written/erased. To be used by payloads that implement a FaultTolerant Variable store like TianoCore. The implementation has been tested against EDK2 master. An example EDK2 implementation can be found here: eb1127744a Change-Id: I25e49d184135710f3e6dd1ad3bed95de950fe057 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/+/40520 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Michał Żygowski <michal.zygowski@3mdeb.com> Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>		2020-10-22 12:29:47 +00:00
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arm/arch
arm64/arch
arpa
pci	libpayload/storage/ahci: Use pacc pointer to read device class	2020-10-20 20:35:47 +00:00
storage	libpayload/storage/ahci: Use pci_dev struct in ahci_initialize()	2020-10-20 20:39:30 +00:00
sys
udc
usb
x86/arch	libpayload/x86: Add some more CPUID helpers	2020-10-16 22:07:27 +00:00
archive.h
assert.h
cbfs.h
cbfs_core.h
cbfs_ram.h
cbgfx.h	libpayload: cbgfx: Support buffered I/O	2020-08-28 21:40:58 +00:00
compiler.h	libpayload: Replace include/compiler.h with commonlib/bsd's version	2020-07-28 16:16:21 +00:00
coreboot_tables.h	drivers/smmstore: Implement SMMSTORE version 2	2020-10-22 12:29:47 +00:00
ctype.h	payloads: Drop unneeded empty lines	2020-09-21 16:20:57 +00:00
die.h
endian.h
errno.h
exception.h
fmap_serialized.h
fpmath.h	libpayload: Add simple 32.32 fixed-point math API	2020-07-09 00:32:11 +00:00
gdb.h
getopt.h
inttypes.h
ipchksum.h
kconfig.h
keycodes.h
libpayload.h	lib and libpayload: Add popcnt functions	2020-10-15 19:01:51 +00:00
limits.h
lz4.h
lzma.h
malloc.h
multiboot_tables.h
panel.h
pci.h
queue.h	payloads: Drop unneeded empty lines	2020-09-21 16:20:57 +00:00
stdarg.h
stddef.h
stdint.h
stdio.h
stdlib.h
string.h	payloads: Drop unneeded empty lines	2020-09-21 16:20:57 +00:00
strings.h
sysinfo.h	libpayload/arch/x86: Introduce pacc pointer in sysinfo_t struct	2020-10-20 20:35:24 +00:00
term.h
time.h
unistd.h
video_console.h