From 6d20d0c1400a07b8ca3d709693263dbc45ca564f Mon Sep 17 00:00:00 2001 From: Tim Wawrzynczak Date: Wed, 13 May 2020 17:00:33 -0600 Subject: soc/intel/tigerlake: Move PMC PCI resources under PMC device Historically in coreboot, the PMC's fixed PCI resources were described by the System Agent (the MMIO resource), and eSPI/LPC (the I/O resource). This patch moves both of those to a new Intel SoC-specific function, soc_pmc_read_resources(). On TGL, this new function takes care of providing the MMIO and I/O resources for the PMC. BUG=b:156388055 TEST=verified on volteer that the resource allocator is aware of and does not touch these two resources: ("PCI: 00:1f.2 resource base fe000000 size 10000 align 0 gran 0 limit 0 flags f0000200 index 0 PCI: 00:1f.2 resource base 1800 size 100 align 0 gran 0 limit 18ff flags c0000100 index 1") Also verify that the MEM resource is described in the coreboot table: ("BIOS-e820: [mem 0x00000000fe000000-0x00000000fe00ffff] reserved") Verified the memory range is also untouchable from Linux: ("system 00:00: [mem 0xfe000000-0xffffffff] could not be reserved") Change-Id: Ia7c6ae849aefaf549fb682416a87320907fb3fe3 Signed-off-by: Tim Wawrzynczak Reviewed-on: https://review.coreboot.org/c/coreboot/+/41385 Reviewed-by: Duncan Laurie Reviewed-by: Furquan Shaikh Reviewed-by: Aaron Durbin Tested-by: build bot (Jenkins) --- src/mainboard/google/deltaur/variants/baseboard/devicetree.cb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/mainboard/google/deltaur') diff --git a/src/mainboard/google/deltaur/variants/baseboard/devicetree.cb b/src/mainboard/google/deltaur/variants/baseboard/devicetree.cb index 7350319b22..8d847f73fc 100644 --- a/src/mainboard/google/deltaur/variants/baseboard/devicetree.cb +++ b/src/mainboard/google/deltaur/variants/baseboard/devicetree.cb @@ -305,7 +305,7 @@ chip soc/intel/tigerlake end end # eSPI device pci 1f.1 off end # P2SB - device pci 1f.2 on end # PMC + device pci 1f.2 hidden end # PMC device pci 1f.3 on end # Intel HDA device pci 1f.4 on end # SMBus device pci 1f.5 on end # PCH SPI Flash Controller -- cgit v1.2.3