intel: Use CF9 reset (part 1)
Add SOUTHBRIDGE_INTEL_COMMON_RESET for all Intel platforms that used to
perform a "system reset" in their hard_reset() implementation. Replace
all duplicate CF9 reset implementations for these platforms.
Change-Id: I8e359b0c4d5a1060edd0940d24c2f78dfed8a590
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/28862
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/soc/intel/baytrail/Kconfig b/src/soc/intel/baytrail/Kconfig
index 7b87766..66fcded 100644
--- a/src/soc/intel/baytrail/Kconfig
+++ b/src/soc/intel/baytrail/Kconfig
@@ -17,7 +17,7 @@
select CPU_INTEL_TURBO_NOT_PACKAGE_SCOPED
select SUPPORT_CPU_UCODE_IN_CBFS
select HAVE_SMI_HANDLER
- select HAVE_HARD_RESET
+ select SOUTHBRIDGE_INTEL_COMMON_RESET
select NO_FIXED_XIP_ROM_SIZE
select PARALLEL_MP
select PCIEXP_ASPM
diff --git a/src/soc/intel/baytrail/Makefile.inc b/src/soc/intel/baytrail/Makefile.inc
index ba9517d..324dcdd 100644
--- a/src/soc/intel/baytrail/Makefile.inc
+++ b/src/soc/intel/baytrail/Makefile.inc
@@ -23,8 +23,6 @@
ramstage-y += northcluster.c
ramstage-y += ramstage.c
ramstage-y += gpio.c
-romstage-y += reset.c
-ramstage-y += reset.c
ramstage-y += cpu.c
romstage-y += pmutil.c
ramstage-y += pmutil.c
diff --git a/src/soc/intel/baytrail/include/soc/reset.h b/src/soc/intel/baytrail/include/soc/reset.h
deleted file mode 100644
index 4a362076..0000000
--- a/src/soc/intel/baytrail/include/soc/reset.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2013 Google Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#ifndef _BAYTRAIL_RESET_H_
-#define _BAYTRAIL_RESET_H_
-#include <reset.h>
-
-/* Bay Trail has the following types of resets:
- * - Soft reset (INIT# to cpu) - write 0x1 to I/O 0x92
- * - Soft reset (INIT# to cpu)- write 0x4 to I/0 0xcf9
- * - Cold reset (S0->S5->S0) - write 0xe to I/0 0xcf9
- * - Warm reset (PMC_PLTRST# assertion) - write 0x6 to I/O 0xcf9
- * - Global reset (S0->S5->S0 with TXE reset) - write 0x6 or 0xe to 0xcf9 but
- * with ETR[20] set.
- */
-
-void cold_reset(void);
-void warm_reset(void);
-
-#endif /* _BAYTRAIL_RESET_H_ */
diff --git a/src/soc/intel/baytrail/reset.c b/src/soc/intel/baytrail/reset.c
deleted file mode 100644
index e38a2e6..0000000
--- a/src/soc/intel/baytrail/reset.c
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2013 Google Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include <arch/io.h>
-#include <soc/pmc.h>
-#include <soc/reset.h>
-
-void cold_reset(void)
-{
- /* S0->S5->S0 trip. */
- outb(RST_CPU | SYS_RST | FULL_RST, RST_CNT);
-}
-
-void warm_reset(void)
-{
- /* PMC_PLTRST# asserted. */
- outb(RST_CPU | SYS_RST, RST_CNT);
-}
-
-void do_soft_reset(void)
-{
- /* Sends INIT# to CPU */
- outb(RST_CPU, RST_CNT);
-}
-
-void do_hard_reset(void)
-{
- /* Don't power cycle on hard_reset(). It's not really clear what the
- * semantics should be for the meaning of hard_reset(). */
- warm_reset();
-}
diff --git a/src/soc/intel/baytrail/romstage/raminit.c b/src/soc/intel/baytrail/romstage/raminit.c
index 45bc75b..cc055c0 100644
--- a/src/soc/intel/baytrail/romstage/raminit.c
+++ b/src/soc/intel/baytrail/romstage/raminit.c
@@ -18,6 +18,7 @@
#include <assert.h>
#include <cbfs.h>
#include <cbmem.h>
+#include <cf9_reset.h>
#include <console/console.h>
#include <device/pci_def.h>
#include <halt.h>
@@ -26,18 +27,11 @@
#include <soc/iomap.h>
#include <soc/iosf.h>
#include <soc/pci_devs.h>
-#include <soc/reset.h>
#include <soc/romstage.h>
#include <ec/google/chromeec/ec.h>
#include <ec/google/chromeec/ec_commands.h>
#include <security/vboot/vboot_common.h>
-static void reset_system(void)
-{
- warm_reset();
- halt();
-}
-
static void enable_smbus(void)
{
uint32_t reg;
@@ -134,7 +128,7 @@
/* If waking from S3 and no cache then. */
printk(BIOS_DEBUG, "No MRC cache found in S3 resume path.\n");
post_code(POST_RESUME_FAILURE);
- reset_system();
+ system_reset();
} else {
printk(BIOS_DEBUG, "No MRC cache found.\n");
}
@@ -165,7 +159,7 @@
#if IS_ENABLED(CONFIG_HAVE_ACPI_RESUME)
printk(BIOS_DEBUG, "Failed to recover CBMEM in S3 resume.\n");
/* Failed S3 resume, reset to come up cleanly */
- reset_system();
+ system_reset();
#endif
}
diff --git a/src/soc/intel/baytrail/romstage/romstage.c b/src/soc/intel/baytrail/romstage/romstage.c
index 07b8010..af67434 100644
--- a/src/soc/intel/baytrail/romstage/romstage.c
+++ b/src/soc/intel/baytrail/romstage/romstage.c
@@ -36,7 +36,6 @@
#include <soc/lpc.h>
#include <soc/pci_devs.h>
#include <soc/pmc.h>
-#include <soc/reset.h>
#include <soc/romstage.h>
#include <soc/smm.h>
#include <soc/spi.h>