This patch ensures the IP initialization being done as part of MTL
bootblock code is able to complete the bootblock phase without any
visible hang.
The re-ordering in the MTL bootblock SoC programming is required to
ensure the SA early initialization is taking place prior to
performing any PCI Read/Write operation (like P2SB bar enabling for
IOE die etc.).
Additionally, Fast SPI init takes place prior to enabling ROM caching
etc.
BUG=b:224325352
TEST= Able to build and start booting the MTL simics.
Without this change, the code execution is stuck as below:
[NOTE ] coreboot-4.16-1236-g856464f162-dirty Sun May 29 15:32:20 UTC 2022 bootblock starting (log level: 8)
[DEBUG] CPU: Intel(R) Core(TM) i7 CPU (server) @ 2.00GHz
[DEBUG] CPU: ID a06a0, MeteorLake A0, ucode: 80000018
[DEBUG] CPU: AES supported, TXT supported, VT supported
[DEBUG] MCH: device id 7d02 (rev 00) is MeteorLake P
[DEBUG] PCH: device id 7e01 (rev 00) is MeteorLake SOC
[DEBUG] IGD: device id ffff (rev ff) is Unknown
[INFO ] PMC: Using default GPE route.
[INFO ] VBNV: CMOS invalid, restoring from flash
[ERROR] init_vbnv: failed to locate NVRAM
[EMERG] Cannot locate primary CBFS
Able to detect the Flash and reading the SPI flash layout in proper
with this change as below:
[NOTE ] coreboot-4.16-1236-g856464f162-dirty Sun May 29 15:32:20 UTC 2022 bootblock starting (log level: 8)
[DEBUG] CPU: Intel(R) Core(TM) i7 CPU (server) @ 2.00GHz
[DEBUG] CPU: ID a06a0, MeteorLake A0, ucode: 80000018
[DEBUG] CPU: AES supported, TXT supported, VT supported
[DEBUG] MCH: device id 7d02 (rev 00) is MeteorLake P
[DEBUG] PCH: device id 7e01 (rev 00) is MeteorLake SOC␛␛[DEBUG] IGD: device id ffff (rev ff) is Unknown
[INFO ] PMC: Using default GPE route.
[INFO ] VBNV: CMOS invalid, restoring from flash
[DEBUG] FMAP: Found "FLASH" version 1.1 at 0x1804000.
[DEBUG] FMAP: base = 0x0 size = 0x2000000 #areas = 33
[DEBUG] FMAP: area RW_NVRAM found @ 112b000 (24576 bytes)
[INFO ] SF: Detected 00 0000 with sector size 0x1000, total 0x2000000
Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: I8485b195f77225d8870589ff2e4d3dbdc8931f0a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64793
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tarun Tuli <taruntuli@google.com>
6876f49b7e