Nico Huber has uploaded this change for review. ( https://review.coreboot.org/29054
Change subject: arch/x86: Implement common CF9 reset
......................................................................
arch/x86: Implement common CF9 reset
It's very common across many x86 silicon vendors, so place it in
`arch/x86/`.
Use the "system reset" as board_reset().
Change-Id: I06c27afa31e5eecfdb7093c02f703bdaabf0594c
Signed-off-by: Nico Huber <nico.h(a)gmx.de>
---
M src/arch/x86/Kconfig
M src/arch/x86/Makefile.inc
A src/arch/x86/cf9_reset.c
A src/arch/x86/include/cf9_reset.h
4 files changed, 109 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/54/29054/1
diff --git a/src/arch/x86/Kconfig b/src/arch/x86/Kconfig
index 46e0c2d..ff26a15 100644
--- a/src/arch/x86/Kconfig
+++ b/src/arch/x86/Kconfig
@@ -315,3 +315,10 @@
bool
default n
depends on ARCH_X86
+
+config HAVE_CF9_RESET
+ bool
+
+config HAVE_CF9_RESET_PREPARE
+ bool
+ depends on HAVE_CF9_RESET
diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc
index 7f85b6a..730bc83 100644
--- a/src/arch/x86/Makefile.inc
+++ b/src/arch/x86/Makefile.inc
@@ -43,6 +43,12 @@
pci$(stripped_vgabios_id).rom-file := $(call strip_quotes,$(CONFIG_VGA_BIOS_FILE))
pci$(stripped_vgabios_id).rom-type := optionrom
+verstage-$(CONFIG_HAVE_CF9_RESET) += cf9_reset.c
+bootblock-$(CONFIG_HAVE_CF9_RESET) += cf9_reset.c
+romstage-$(CONFIG_HAVE_CF9_RESET) += cf9_reset.c
+ramstage-$(CONFIG_HAVE_CF9_RESET) += cf9_reset.c
+postcar-$(CONFIG_HAVE_CF9_RESET) += cf9_reset.c
+
###############################################################################
# common support for early assembly includes
###############################################################################
diff --git a/src/arch/x86/cf9_reset.c b/src/arch/x86/cf9_reset.c
new file mode 100644
index 0000000..6f903c9
--- /dev/null
+++ b/src/arch/x86/cf9_reset.c
@@ -0,0 +1,56 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2017 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 <arch/cache.h>
+#include <cf9_reset.h>
+#include <console/console.h>
+#include <halt.h>
+#include <reset.h>
+
+void do_system_reset(void)
+{
+ outb(SYS_RST, RST_CNT);
+ outb(RST_CPU | SYS_RST, RST_CNT);
+}
+
+void do_full_reset(void)
+{
+ outb(FULL_RST | SYS_RST, RST_CNT);
+ outb(FULL_RST | RST_CPU | SYS_RST, RST_CNT);
+}
+
+void system_reset(void)
+{
+ printk(BIOS_INFO, "%s() called!\n", __func__);
+ cf9_reset_prepare();
+ dcache_clean_all();
+ do_system_reset();
+ halt();
+}
+
+void full_reset(void)
+{
+ printk(BIOS_INFO, "%s() called!\n", __func__);
+ cf9_reset_prepare();
+ dcache_clean_all();
+ do_full_reset();
+ halt();
+}
+
+void do_board_reset(void)
+{
+ system_reset();
+}
diff --git a/src/arch/x86/include/cf9_reset.h b/src/arch/x86/include/cf9_reset.h
new file mode 100644
index 0000000..c0dcc92
--- /dev/null
+++ b/src/arch/x86/include/cf9_reset.h
@@ -0,0 +1,40 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 Intel Corp.
+ *
+ * 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 X86_CF9_RESET_H
+#define X86_CF9_RESET_H
+
+/* Reset control port */
+#define RST_CNT 0xcf9
+#define FULL_RST (1 << 3)
+#define RST_CPU (1 << 2)
+#define SYS_RST (1 << 1)
+
+/* Implement the bare reset, i.e. write to cf9. */
+void do_system_reset(void);
+void do_full_reset(void);
+
+/* Called by functions below before reset. */
+#if IS_ENABLED(CONFIG_HAVE_CF9_RESET_PREPARE)
+void cf9_reset_prepare(void);
+#else
+static inline void cf9_reset_prepare(void) {}
+#endif
+
+/* Prepare for reset, run do_*_reset(), halt. */
+__noreturn void system_reset(void);
+__noreturn void full_reset(void);
+
+#endif /* X86_CF9_RESET_H */
--
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Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I06c27afa31e5eecfdb7093c02f703bdaabf0594c
Gerrit-Change-Number: 29054
Gerrit-PatchSet: 1
Gerrit-Owner: Nico Huber <nico.h(a)gmx.de>
Nico Huber has uploaded this change for review. ( https://review.coreboot.org/29053
Change subject: soc/amd: Implement common reset API
......................................................................
soc/amd: Implement common reset API
Add an `amdblocks` internal API and rename
soft_reset() => warm_reset()
hard_reset() => cold_reset()
as these terms are commonly used in the surrounding code.
On Stoney Ridge, make board_reset() call cold_reset() to keep
current behaviour of common code calling hard_reset(). But add
a TODO if this is intended.
Note: Stoney Ridge is using CF9 for the actual reset but the
configuration for a cold reset doesn't use the usual full reset
bit but some other mechanism.
Change-Id: Id33eda676d79529db759b85fa8e28386846e6fa4
Signed-off-by: Nico Huber <nico.h(a)gmx.de>
---
A src/soc/amd/common/block/include/amdblocks/reset.h
M src/soc/amd/common/block/pi/def_callouts.c
M src/soc/amd/stoneyridge/Kconfig
M src/soc/amd/stoneyridge/reset.c
M src/soc/amd/stoneyridge/southbridge.c
5 files changed, 56 insertions(+), 8 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/53/29053/1
diff --git a/src/soc/amd/common/block/include/amdblocks/reset.h b/src/soc/amd/common/block/include/amdblocks/reset.h
new file mode 100644
index 0000000..4f149ea
--- /dev/null
+++ b/src/soc/amd/common/block/include/amdblocks/reset.h
@@ -0,0 +1,42 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2017 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 __AMD_RESET_H__
+#define __AMD_RESET_H__
+
+#include <console/console.h>
+#include <arch/cache.h>
+#include <halt.h>
+
+void do_warm_reset(void);
+void do_cold_reset(void);
+
+static inline __noreturn void warm_reset(void)
+{
+ printk(BIOS_INFO, "%s() called!\n", __func__);
+ dcache_clean_all();
+ do_warm_reset();
+ halt();
+}
+
+static inline __noreturn void cold_reset(void)
+{
+ printk(BIOS_INFO, "%s() called!\n", __func__);
+ dcache_clean_all();
+ do_cold_reset();
+ halt();
+}
+
+#endif /* __AMD_RESET_H__ */
diff --git a/src/soc/amd/common/block/pi/def_callouts.c b/src/soc/amd/common/block/pi/def_callouts.c
index d136084..27d4b0b 100644
--- a/src/soc/amd/common/block/pi/def_callouts.c
+++ b/src/soc/amd/common/block/pi/def_callouts.c
@@ -21,7 +21,7 @@
#include <amdblocks/BiosCallOuts.h>
#include <amdblocks/agesawrapper.h>
#include <amdblocks/agesawrapper_call.h>
-#include <reset.h>
+#include <amdblocks/reset.h>
#include <soc/southbridge.h>
#if ENV_BOOTBLOCK
@@ -127,12 +127,12 @@
switch (ResetType) {
case WARM_RESET_WHENEVER:
case WARM_RESET_IMMEDIATELY:
- do_soft_reset();
+ warm_reset();
break;
case COLD_RESET_WHENEVER:
case COLD_RESET_IMMEDIATELY:
- do_hard_reset();
+ cold_reset();
break;
default:
diff --git a/src/soc/amd/stoneyridge/Kconfig b/src/soc/amd/stoneyridge/Kconfig
index 1f2331a..4411984 100644
--- a/src/soc/amd/stoneyridge/Kconfig
+++ b/src/soc/amd/stoneyridge/Kconfig
@@ -39,7 +39,6 @@
select GENERIC_UDELAY
select IOAPIC
select HAVE_USBDEBUG_OPTIONS
- select HAVE_HARD_RESET
select HAVE_MONOTONIC_TIMER
select SPI_FLASH if HAVE_ACPI_RESUME
select TSC_SYNC_LFENCE
diff --git a/src/soc/amd/stoneyridge/reset.c b/src/soc/amd/stoneyridge/reset.c
index 738ec59..34aa576 100644
--- a/src/soc/amd/stoneyridge/reset.c
+++ b/src/soc/amd/stoneyridge/reset.c
@@ -20,6 +20,7 @@
#include <soc/pci_devs.h>
#include <device/pci_ops.h>
#include <soc/southbridge.h>
+#include <amdblocks/reset.h>
void set_warm_reset_flag(void)
{
@@ -45,7 +46,7 @@
pci_write_config32(SOC_HT_DEV, HT_INIT_CONTROL, htic);
}
-void do_hard_reset(void)
+void do_cold_reset(void)
{
clear_bios_reset();
@@ -55,7 +56,7 @@
outb(RST_CMD | SYS_RST, SYS_RESET);
}
-void do_soft_reset(void)
+void do_warm_reset(void)
{
set_warm_reset_flag();
clear_bios_reset();
@@ -63,3 +64,9 @@
/* Assert reset signals only. */
outb(RST_CMD | SYS_RST, SYS_RESET);
}
+
+void do_board_reset(void)
+{
+ /* TODO: Would a warm_reset() suffice? */
+ do_cold_reset();
+}
diff --git a/src/soc/amd/stoneyridge/southbridge.c b/src/soc/amd/stoneyridge/southbridge.c
index 763ddd7..5dff9fc 100644
--- a/src/soc/amd/stoneyridge/southbridge.c
+++ b/src/soc/amd/stoneyridge/southbridge.c
@@ -26,6 +26,7 @@
#include <elog.h>
#include <amdblocks/amd_pci_util.h>
#include <amdblocks/agesawrapper.h>
+#include <amdblocks/reset.h>
#include <soc/southbridge.h>
#include <soc/smi.h>
#include <soc/amd_pci_int_defs.h>
@@ -33,7 +34,6 @@
#include <soc/pci_devs.h>
#include <agesa_headers.h>
#include <soc/nvs.h>
-#include <reset.h>
/*
* Table of devices that need their AOAC registers enabled and waited
@@ -638,7 +638,7 @@
setup_misc(&reboot);
if (reboot)
- soft_reset();
+ warm_reset();
sb_enable_legacy_io();
enable_aoac_devices();
--
To view, visit https://review.coreboot.org/29053
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Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Id33eda676d79529db759b85fa8e28386846e6fa4
Gerrit-Change-Number: 29053
Gerrit-PatchSet: 1
Gerrit-Owner: Nico Huber <nico.h(a)gmx.de>