diff options
| author | Angel Pons <th3fanbus@gmail.com> | 2021-12-01 11:44:09 +0100 |
|---|---|---|
| committer | Felix Singer <felixsinger@posteo.net> | 2021-12-02 12:36:25 +0000 |
| commit | db925aaf38dfc10de74c80cb1e43a7058fa8811a (patch) | |
| tree | f811185dee4aeb9aab4db00f87d1ff6c459788c7 /src/soc | |
| parent | 734a777d94b2f4b74cb635e6159f1440195642e9 (diff) | |
soc/intel/alderlake: Add Kconfigs for all PCH types
The Alder Lake code currently supports the PCH-M and PCH-P types, which
have some differences (so far, only the amount of PCIe I/O). Mainboards
can use the `SOC_INTEL_ALDERLAKE_PCH_M` Kconfig option to specify which
PCH type they use: select the option to choose PCH-M, do not select the
option to choose PCH-P. While this works, it can be confusing once more
PCH types are added.
Introduce the `SOC_INTEL_ALDERLAKE_PCH_P` Kconfig option so that boards
have to explicitly choose a PCH type. Also, use this option to restrict
the PCH-P defaults for PCH-dependent settings to avoid unintended reuse
of the PCH-P defaults when adding a new PCH type. To make sure only one
PCH type is selected, add some preprocessor in `bootblock.h` to provoke
a build-time error if this requirement is not met. Kconfig doesn't seem
to have a mechanism to describe sets of mutually-exclusive bool options
that allows said options to be selected (a `choice` block doesn't allow
its elements to be selected). Finally, adapt the ADL boards accordingly.
Change-Id: I7deca820e08ce2b5a220f3c97a511a4f3464a976
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59804
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/alderlake/Kconfig | 23 | ||||
| -rw-r--r-- | src/soc/intel/alderlake/include/soc/bootblock.h | 5 |
2 files changed, 21 insertions, 7 deletions
diff --git a/src/soc/intel/alderlake/Kconfig b/src/soc/intel/alderlake/Kconfig index e5d6d6b999..2f8f3da429 100644 --- a/src/soc/intel/alderlake/Kconfig +++ b/src/soc/intel/alderlake/Kconfig @@ -1,12 +1,21 @@ config SOC_INTEL_ALDERLAKE bool help - Intel Alderlake support + Intel Alderlake support. Mainboards should specify the PCH + type using the `SOC_INTEL_ALDERLAKE_PCH_*` options instead + of selecting this option directly. config SOC_INTEL_ALDERLAKE_PCH_M bool + select SOC_INTEL_ALDERLAKE help - Choose this option if you have PCH-M chipset. + Choose this option if your mainboard has a PCH-M chipset. + +config SOC_INTEL_ALDERLAKE_PCH_P + bool + select SOC_INTEL_ALDERLAKE + help + Choose this option if your mainboard has a PCH-P chipset. if SOC_INTEL_ALDERLAKE @@ -169,12 +178,12 @@ endif # SOC_INTEL_ENABLE_USB4_PCIE_RESOURCES config MAX_PCH_ROOT_PORTS int default 10 if SOC_INTEL_ALDERLAKE_PCH_M - default 12 + default 12 if SOC_INTEL_ALDERLAKE_PCH_P config MAX_CPU_ROOT_PORTS int default 1 if SOC_INTEL_ALDERLAKE_PCH_M - default 3 + default 3 if SOC_INTEL_ALDERLAKE_PCH_P config MAX_ROOT_PORTS int @@ -183,12 +192,12 @@ config MAX_ROOT_PORTS config MAX_PCIE_CLOCK_SRC int default 6 if SOC_INTEL_ALDERLAKE_PCH_M - default 7 + default 7 if SOC_INTEL_ALDERLAKE_PCH_P config MAX_PCIE_CLOCK_REQ int - default 6 if SOC_INTEL_ALDERLAKE_PCH_M - default 10 + default 6 if SOC_INTEL_ALDERLAKE_PCH_M + default 10 if SOC_INTEL_ALDERLAKE_PCH_P config SMM_TSEG_SIZE hex diff --git a/src/soc/intel/alderlake/include/soc/bootblock.h b/src/soc/intel/alderlake/include/soc/bootblock.h index 0cf334fe09..059568d09b 100644 --- a/src/soc/intel/alderlake/include/soc/bootblock.h +++ b/src/soc/intel/alderlake/include/soc/bootblock.h @@ -3,6 +3,11 @@ #ifndef _SOC_ALDERLAKE_BOOTBLOCK_H_ #define _SOC_ALDERLAKE_BOOTBLOCK_H_ +#if CONFIG(SOC_INTEL_ALDERLAKE_PCH_M) + \ + CONFIG(SOC_INTEL_ALDERLAKE_PCH_P) != 1 +#error "Please select exactly one PCH type" +#endif + /* Bootblock pre console init programming */ void bootblock_pch_early_init(void); |