[flashrom-gerrit] Change in flashrom[master]: Add support for Intel Emmitsburg PCH

[David Hendricks (Code Review)]

David Hendricks has submitted this change. ( https://review.coreboot.org/c/flashrom/+/54965 )

Change subject: Add support for Intel Emmitsburg PCH
......................................................................

Add support for Intel Emmitsburg PCH

This patch does the following:
- Add PCIe ID for Intel Emmitsburg PCH
- Based on ICH descriptor content, choose CHIPSET_C620_SERIES_LEWISBURG
  if ISL/PSL is 80.

TESTED=tried on a server with Intel Emmitsburg PCH, flash update
was successful. This server, however, does not have flash chip
installed, it instead has em100 emulator connected.

Change-Id: I2a1bb7467e693d1583aa885fa0e277075edd4a3e
Signed-off-by: Jonathan Zhang 
Signed-off-by: David Hendricks 
Reviewed-on: https://review.coreboot.org/c/flashrom/+/54965
Tested-by: build bot (Jenkins) 
Reviewed-by: Christian Walter 
Reviewed-by: Johnny Lin 
Reviewed-by: Tim Chu 
---
M chipset_enable.c
M ich_descriptors.c
2 files changed, 3 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Christian Walter: Looks good to me, approved
  Johnny Lin: Looks good to me, but someone else must approve
  Tim Chu: Looks good to me, but someone else must approve

diff --git a/chipset_enable.c b/chipset_enable.c
index cdd51ae..110d7a9 100644
--- a/chipset_enable.c
+++ b/chipset_enable.c
@@ -2073,6 +2073,7 @@
    {0x8086, 0xa247, B_S,    NT,  "Intel", "C620 Series Chipset Supersku",	enable_flash_c620},
    {0x8086, 0xa248, B_S,    NT,  "Intel", "C620 Series Chipset Supersku",	enable_flash_c620},
    {0x8086, 0xa249, B_S,    NT,  "Intel", "C620 Series Chipset Supersku",	enable_flash_c620},
+	{0x8086, 0x1bca, B_S,    NT,  "Intel", "Emmitsburg Chipset SKU",	enable_flash_c620},
    {0x8086, 0xa2c4, B_S,    NT,  "Intel", "H270",				enable_flash_pch100},
    {0x8086, 0xa2c5, B_S,    NT,  "Intel", "Z270",				enable_flash_pch100},
    {0x8086, 0xa2c6, B_S,    NT,  "Intel", "Q270",				enable_flash_pch100},
diff --git a/ich_descriptors.c b/ich_descriptors.c
index aba7528..d56ade7 100644
--- a/ich_descriptors.c
+++ b/ich_descriptors.c
@@ -939,6 +939,8 @@
    		warn_peculiar_desc(content->ISL != 23, "Gemini Lake");
    		return CHIPSET_GEMINI_LAKE;
    	}
+		if (content->ISL <= 80)
+			return CHIPSET_C620_SERIES_LEWISBURG;
    	warn_peculiar_desc(content->ISL != 16, "Ibex Peak");
    	return CHIPSET_5_SERIES_IBEX_PEAK;
    } else if (upper->MDTBA == 0x00) {