diff options
| author | Marc Jones <marcjones@sysproconsulting.com> | 2021-04-06 15:28:40 -0600 |
|---|---|---|
| committer | Marc Jones <marc@marcjonesconsulting.com> | 2021-04-21 18:01:16 +0000 |
| commit | d77b97dc9aa9e2fe8e1c5fc6adf1cd34550bb832 (patch) | |
| tree | e73be992ce6cfcf5d4ad6768e4feac4c22876e84 /src/soc/intel/xeon_sp | |
| parent | a5761efd14a20b2eb419f27bb8142ae04f1b326e (diff) | |
soc/intel/xeon_sp: Set PAM0123 lock
Set the PAM0123 lock as indicated by the Intel documentation.
This is set is finalize to allow any part of coreboot to update
the PAM prior to booting.
Change-Id: I3cdb7fc08eb903d799d585c56107de92f034b186
Signed-off-by: Marc Jones <marcjones@sysproconsulting.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52165
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jay Talbott <JayTalbott@sysproconsulting.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Diffstat (limited to 'src/soc/intel/xeon_sp')
| -rw-r--r-- | src/soc/intel/xeon_sp/cpx/include/soc/pci_devs.h | 1 | ||||
| -rw-r--r-- | src/soc/intel/xeon_sp/finalize.c | 18 | ||||
| -rw-r--r-- | src/soc/intel/xeon_sp/skx/include/soc/pci_devs.h | 1 |
3 files changed, 20 insertions, 0 deletions
diff --git a/src/soc/intel/xeon_sp/cpx/include/soc/pci_devs.h b/src/soc/intel/xeon_sp/cpx/include/soc/pci_devs.h index 7b16945958..7f4a04583d 100644 --- a/src/soc/intel/xeon_sp/cpx/include/soc/pci_devs.h +++ b/src/soc/intel/xeon_sp/cpx/include/soc/pci_devs.h @@ -11,6 +11,7 @@ #define SAD_ALL_DEV 29 #define SAD_ALL_FUNC 0 #define SAD_ALL_PAM0123_CSR 0x40 +#define PAM_LOCK BIT(0) #define SAD_ALL_PAM456_CSR 0x44 #if !defined(__SIMPLE_DEVICE__) diff --git a/src/soc/intel/xeon_sp/finalize.c b/src/soc/intel/xeon_sp/finalize.c index bfcf212558..044c1cc138 100644 --- a/src/soc/intel/xeon_sp/finalize.c +++ b/src/soc/intel/xeon_sp/finalize.c @@ -4,12 +4,30 @@ #include <console/console.h> #include <console/debug.h> #include <cpu/x86/smm.h> +#include <device/pci.h> +#include <intelpch/lockdown.h> +#include <soc/pci_devs.h> +#include <soc/util.h> + +#include "chip.h" + +static void lock_pam0123(void) +{ + const struct device *dev; + + if (get_lockdown_config() != CHIPSET_LOCKDOWN_COREBOOT) + return; + + dev = pcidev_path_on_bus(get_stack_busno(1), PCI_DEVFN(SAD_ALL_DEV, SAD_ALL_FUNC)); + pci_or_config32(dev, SAD_ALL_PAM0123_CSR, PAM_LOCK); +} static void soc_finalize(void *unused) { printk(BIOS_DEBUG, "Finalizing chipset.\n"); apm_control(APM_CNT_FINALIZE); + lock_pam0123(); post_code(POST_OS_BOOT); } diff --git a/src/soc/intel/xeon_sp/skx/include/soc/pci_devs.h b/src/soc/intel/xeon_sp/skx/include/soc/pci_devs.h index 96239baf03..01e86e199f 100644 --- a/src/soc/intel/xeon_sp/skx/include/soc/pci_devs.h +++ b/src/soc/intel/xeon_sp/skx/include/soc/pci_devs.h @@ -24,6 +24,7 @@ #define SAD_ALL_DEV 29 #define SAD_ALL_FUNC 0 #define SAD_ALL_PAM0123_CSR 0x40 +#define PAM_LOCK BIT(0) #define SAD_ALL_PAM456_CSR 0x44 #if !defined(__SIMPLE_DEVICE__) |