diff options
| author | Subrata Banik <subrata.banik@intel.com> | 2021-09-30 20:32:50 +0530 |
|---|---|---|
| committer | Subrata Banik <subrata.banik@intel.com> | 2021-10-06 19:04:56 +0000 |
| commit | 78e66ad63b41316d268d33e1a68eeffe06b85baf (patch) | |
| tree | 08b0fbc9cec44be6257771efb82616864d7321f9 /src | |
| parent | 3710e9972bc9e35e8389bb3b47d443e3c5e01859 (diff) | |
soc/intel/alderlake: Perform `heci_finalize` prior to booting to OS
`heci_finalize` ensures to put all heci devices to D3 by setting the
D0i3 bit prior to booting to the OS.
BUG=b:200644229
TEST=Verified D0i3 bit is set for all HECI devices prior to booting
to OS.
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Change-Id: I86d5959646522f9a2169bf13ae04d88b8f685e14
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58040
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/alderlake/finalize.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/soc/intel/alderlake/finalize.c b/src/soc/intel/alderlake/finalize.c index 6e2406ae53..c821e25769 100644 --- a/src/soc/intel/alderlake/finalize.c +++ b/src/soc/intel/alderlake/finalize.c @@ -13,6 +13,7 @@ #include <cpu/x86/smm.h> #include <device/mmio.h> #include <device/pci.h> +#include <intelblocks/cse.h> #include <intelblocks/lpc_lib.h> #include <intelblocks/pcr.h> #include <intelblocks/pmclib.h> @@ -90,6 +91,23 @@ static void sa_finalize(void) sa_lock_pam(); } +static void heci_finalize(void) +{ + unsigned int cse_dev[] = { + PCH_DEVFN_CSE, + PCH_DEVFN_CSE_2, + PCH_DEVFN_CSE_3, + PCH_DEVFN_CSE_4 + }; + + for (int i = 0; i < ARRAY_SIZE(cse_dev); i++) { + if (!is_cse_devfn_visible(cse_dev[i])) + continue; + + set_cse_device_state(cse_dev[i], DEV_IDLE); + } +} + static void soc_finalize(void *unused) { printk(BIOS_DEBUG, "Finalizing chipset.\n"); @@ -98,6 +116,7 @@ static void soc_finalize(void *unused) apm_control(APM_CNT_FINALIZE); tbt_finalize(); sa_finalize(); + heci_finalize(); /* Indicate finalize step with post code */ post_code(POST_OS_BOOT); |