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Add Tiger Lake U Premium support

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Tiger Lake has very low ICCRIBA (TGL=0x11, CNL=0x34 and CML=0x34) and
detects as unknown chipset compatible with 300 series chipset. Add a
new enum CHIPSET_500_SERIES_TIGER_POINT and treat it identically to
CHIPSET_400_SERIES_COMET_POINT. There are some exceptions though,
ICCRIBA is no longer present n descriptor content so a new union has
been defined for new fields and used in descriptor guessing.
freq_read field is not present on Tiger Lake, moreover in CannonPoint
and Comet Point this field is used as eSPI/EC frequency, so a new
function to print read frequency has ben added. Finally Tiger lake
boot straps include eSPI, so a new bus has been added for the new
straps.

TEST=Flash BIOS region on Intel i5-1135G7

Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Change-Id: I28f3b6fe9f8ce9e976a6808683f46b6f4ec72bdd
Reviewed-on: https://review.coreboot.org/c/flashrom/+/55578
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Michał Żygowski
2021-06-16 15:13:54 +02:00
committed by Nico Huber
parent 5020cf3a62
commit 93b01904db
6 changed files with 92 additions and 8 deletions
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4
util/ich_descriptors_tool/ich_descriptors_tool.c
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@ -136,6 +136,7 @@ static void usage(char *argv[], const char *error)
"\t- \"100\" or \"sunrise\" for Intel's 100 series chipsets.\n"
"\t- \"300\" or \"cannon\" for Intel's 300 series chipsets.\n"
"\t- \"400\" or \"comet\" for Intel's 400 series chipsets.\n"
"\t- \"500\" or \"tiger\" for Intel's 500 series chipsets.\n"
"If '-d' is specified some regions such as the BIOS image as seen by the CPU or\n"
"the GbE blob that is required to initialize the GbE are also dumped to files.\n",
argv[0], argv[0]);
@ -230,6 +231,9 @@ int main(int argc, char *argv[])
else if ((strcmp(csn, "400") == 0) ||
(strcmp(csn, "comet") == 0))
cs = CHIPSET_400_SERIES_COMET_POINT;
else if ((strcmp(csn, "500") == 0) ||
(strcmp(csn, "tiger") == 0))
cs = CHIPSET_500_SERIES_TIGER_POINT;
else if (strcmp(csn, "apollo") == 0)
cs = CHIPSET_APOLLO_LAKE;
else if (strcmp(csn, "gemini") == 0)