soc/amd/cezanne: add downcoring and SMT disable settings to devicetree
BUG=b:184162768
TEST=none
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Id03454ed2be242bce9497560c089f75046ed7e32
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52197
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/amd/cezanne/chip.h b/src/soc/amd/cezanne/chip.h
index 455de36..af78ddf 100644
--- a/src/soc/amd/cezanne/chip.h
+++ b/src/soc/amd/cezanne/chip.h
@@ -15,6 +15,18 @@
/* Enable S0iX support */
bool s0ix_enable;
+
+ enum {
+ DOWNCORE_AUTO = 0,
+ DOWNCORE_1 = 1, /* Run with 1 physical core */
+ DOWNCORE_2 = 3, /* Run with 2 physical cores */
+ DOWNCORE_3 = 4, /* Run with 3 physical cores */
+ DOWNCORE_4 = 6, /* Run with 4 physical cores */
+ DOWNCORE_5 = 8, /* Run with 5 physical cores */
+ DOWNCORE_6 = 9, /* Run with 6 physical cores */
+ DOWNCORE_7 = 10, /* Run with 7 physical cores */
+ } downcore_mode;
+ bool disable_smt; /* disable second thread on all physical cores */
};
#endif /* CEZANNE_CHIP_H */
diff --git a/src/soc/amd/cezanne/fsp_m_params.c b/src/soc/amd/cezanne/fsp_m_params.c
index f24b601..baf4ca8 100644
--- a/src/soc/amd/cezanne/fsp_m_params.c
+++ b/src/soc/amd/cezanne/fsp_m_params.c
@@ -4,10 +4,12 @@
#include <amdblocks/memmap.h>
#include <assert.h>
#include <console/uart.h>
+#include <device/device.h>
#include <fsp/api.h>
#include <soc/platform_descriptors.h>
#include <string.h>
#include <types.h>
+#include "chip.h"
static void fill_dxio_descriptors(FSP_M_CONFIG *mcfg,
const fsp_dxio_descriptor *descs, size_t num)
@@ -51,6 +53,7 @@
void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version)
{
FSP_M_CONFIG *mcfg = &mupd->FspmConfig;
+ const struct soc_amd_cezanne_config *config = config_of_soc();
mupd->FspmArchUpd.NvsBufferPtr = (uintptr_t)soc_fill_apob_cache();
@@ -62,5 +65,9 @@
mcfg->serial_port_baudrate = get_uart_baudrate();
mcfg->serial_port_refclk = uart_platform_refclk();
+ /* 0 is default */
+ mcfg->ccx_down_core_mode = config->downcore_mode;
+ mcfg->ccx_disable_smt = config->disable_smt;
+
fsp_fill_pcie_ddi_descriptors(mcfg);
}