soc/amd: Use common reset code for CZN & MDN SoCs

This switches the Cezanne & Mendocino SoCs to use the common reset code.
This patch does not change any behavior on those chips.

Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: Ie05c790573e4e68f3ec91bacffcc7d7efb986d79
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72659
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

4 files changed, 3 insertions, 37 deletions

diff --git a/src/soc/amd/mendocino/Kconfig b/src/soc/amd/mendocino/Kconfig
index 7faa479363..5b274f90fd 100644
--- a/src/soc/amd/mendocino/Kconfig
+++ b/src/soc/amd/mendocino/Kconfig
@@ -61,6 +61,7 @@ config SOC_AMD_REMBRANDT_BASE
 	select SOC_AMD_COMMON_BLOCK_PM
 	select SOC_AMD_COMMON_BLOCK_PM_CHIPSET_STATE_SAVE
 	select SOC_AMD_COMMON_BLOCK_PSP_GEN2
+	select SOC_AMD_COMMON_BLOCK_RESET
 	select SOC_AMD_COMMON_BLOCK_SMBUS
 	select SOC_AMD_COMMON_BLOCK_SMI
 	select SOC_AMD_COMMON_BLOCK_SMM
diff --git a/src/soc/amd/mendocino/Makefile.inc b/src/soc/amd/mendocino/Makefile.inc
index 7d7033a563..1dc07733f6 100644
--- a/src/soc/amd/mendocino/Makefile.inc
+++ b/src/soc/amd/mendocino/Makefile.inc
@@ -14,19 +14,16 @@ bootblock-y	+= early_fch.c
 bootblock-y	+= espi_util.c
 bootblock-y	+= gpio.c
 bootblock-y	+= i2c.c
-bootblock-y	+= reset.c
 bootblock-y	+= uart.c
 
 verstage-y	+= i2c.c
 verstage-y	+= espi_util.c
 verstage_x86-y	+= gpio.c
-verstage_x86-y	+= reset.c
 verstage_x86-y	+= uart.c
 
 romstage-y	+= fsp_m_params.c
 romstage-y	+= gpio.c
 romstage-y	+= i2c.c
-romstage-y	+= reset.c
 romstage-y	+= romstage.c
 romstage-y	+= uart.c
 
@@ -39,7 +36,6 @@ ramstage-y	+= fsp_s_params.c
 ramstage-y	+= gpio.c
 ramstage-y	+= i2c.c
 ramstage-y	+= mca.c
-ramstage-y	+= reset.c
 ramstage-y	+= root_complex.c
 ramstage-y	+= uart.c
 ramstage-y	+= xhci.c
diff --git a/src/soc/amd/mendocino/fch.c b/src/soc/amd/mendocino/fch.c
index abe2dc1177..5edbcc6072 100644
--- a/src/soc/amd/mendocino/fch.c
+++ b/src/soc/amd/mendocino/fch.c
@@ -5,6 +5,7 @@
 #include <amdblocks/amd_pci_util.h>
 #include <amdblocks/gpio.h>
 #include <amdblocks/pci_clk_req.h>
+#include <amdblocks/reset.h>
 #include <amdblocks/smi.h>
 #include <assert.h>
 #include <bootstate.h>
@@ -126,11 +127,6 @@ static void fch_init_acpi_ports(void)
 				PM_ACPI_TIMER_EN_EN);
 }
 
-static void fch_init_resets(void)
-{
-	pm_write16(PWR_RESET_CFG, pm_read16(PWR_RESET_CFG) | TOGGLE_ALL_PWR_GOOD);
-}
-
 /* configure the general purpose PCIe clock outputs according to the devicetree settings */
 static void gpp_clk_setup(void)
 {
@@ -202,7 +198,7 @@ static void cgpll_clock_gate_init(void)
 
 void fch_init(void *chip_info)
 {
-	fch_init_resets();
+	set_resets_to_cold();
 	i2c_soc_init();
 	fch_init_acpi_ports();
 
diff --git a/src/soc/amd/mendocino/reset.c b/src/soc/amd/mendocino/reset.c
deleted file mode 100644
index ac0c981718..0000000000
--- a/src/soc/amd/mendocino/reset.c
+++ /dev/null
@@ -1,27 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-#include <arch/io.h>
-#include <cf9_reset.h>
-#include <reset.h>
-#include <soc/southbridge.h>
-#include <amdblocks/acpimmio.h>
-#include <amdblocks/reset.h>
-
-void do_cold_reset(void)
-{
-	/* De-assert and then assert all PwrGood signals on CF9 reset. */
-	pm_write16(PWR_RESET_CFG, pm_read16(PWR_RESET_CFG) |
-		TOGGLE_ALL_PWR_GOOD);
-	outb(RST_CPU | SYS_RST, RST_CNT);
-}
-
-void do_warm_reset(void)
-{
-	/* Warm resets are not supported and must be executed as cold */
-	do_cold_reset();
-}
-
-void do_board_reset(void)
-{
-	do_cold_reset();
-}