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authorArthur Heymans <arthur@aheymans.xyz>2019-10-03 09:16:10 +0200
committerArthur Heymans <arthur@aheymans.xyz>2019-10-06 10:15:16 +0000
commit3b452e0a797b54a05b97725f4e4e320c51098754 (patch)
tree6cebd0c98dd87522f32a6179051673ae2225e17c /src/southbridge
parentcea4fd9bb059dab2a0c10b48b1c645807665eec2 (diff)
downloadcoreboot-3b452e0a797b54a05b97725f4e4e320c51098754.tar.xz
nb/intel/nehalem: Move PCH init to sb/intel/ibexpeak
This change does the following: - Move PCH init code from the common romstage to sb code, this allows for easier reuse in bootblock - Provide a common minimal LPC io decode setup, mainboards can override this in the mainboard_lpc_init if required - Set up LPC generic IO decode up in romstage based on devicetree settings - Remove the ramstage LPC generic IO decode from ramstage as this is now done in romstage.c - Get rid of unneeded setup of spi_read configuration in BIOS_CNTL as this is already done in the bootblock. Change-Id: I3f448ad1fdc445c4c1fedbc8497e1025af111412 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/35772 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Diffstat (limited to 'src/southbridge')
-rw-r--r--src/southbridge/intel/ibexpeak/Makefile.inc1
-rw-r--r--src/southbridge/intel/ibexpeak/early_pch.c93
-rw-r--r--src/southbridge/intel/ibexpeak/lpc.c20
-rw-r--r--src/southbridge/intel/ibexpeak/pch.h2
4 files changed, 97 insertions, 19 deletions
diff --git a/src/southbridge/intel/ibexpeak/Makefile.inc b/src/southbridge/intel/ibexpeak/Makefile.inc
index f22be2453b..8c4443ce0e 100644
--- a/src/southbridge/intel/ibexpeak/Makefile.inc
+++ b/src/southbridge/intel/ibexpeak/Makefile.inc
@@ -37,6 +37,7 @@ ramstage-y += madt.c
smm-y += smihandler.c me.c ../bd82x6x/me_8.x.c
+romstage-y += early_pch.c
romstage-y += early_smbus.c
romstage-y +=../bd82x6x/early_me.c
romstage-y +=../bd82x6x/me_status.c
diff --git a/src/southbridge/intel/ibexpeak/early_pch.c b/src/southbridge/intel/ibexpeak/early_pch.c
new file mode 100644
index 0000000000..2707eb2cb8
--- /dev/null
+++ b/src/southbridge/intel/ibexpeak/early_pch.c
@@ -0,0 +1,93 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2009 coresystems GmbH
+ * Copyright (C) 2011 Sven Schnelle <svens@stackframe.org>
+ * Copyright (C) 2013 Vladimir Serbinenko <phcoder@gmail.com>
+ *
+ * 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 <stdint.h>
+#include <device/pci_ops.h>
+#include <northbridge/intel/nehalem/nehalem.h>
+#include <southbridge/intel/ibexpeak/pch.h>
+#include <southbridge/intel/common/gpio.h>
+
+#include "chip.h"
+
+static void early_lpc_init(void)
+{
+ const struct device *dev = pcidev_on_root(0x1f, 0);
+ const struct southbridge_intel_ibexpeak_config *config = NULL;
+
+ /* Add some default decode ranges:
+ - 0x2e/2f, 0x4e/0x4f
+ - EC/Mouse/KBC 60/64, 62/66
+ - 0x3f8 COMA
+ If more are needed, update in mainboard_lpc_init hook
+ */
+ pci_write_config16(PCH_LPC_DEV, LPC_EN,
+ CNF2_LPC_EN | CNF1_LPC_EN | MC_LPC_EN | KBC_LPC_EN |
+ COMA_LPC_EN);
+ pci_write_config16(PCH_LPC_DEV, LPC_IO_DEC, 0x10);
+
+ /* Clear PWR_FLR */
+ pci_write_config8(PCH_LPC_DEV, GEN_PMCON_3,
+ (pci_read_config8(PCH_LPC_DEV, GEN_PMCON_3) & ~2) | 1);
+
+ pci_write_config32(PCH_LPC_DEV, ETR3,
+ pci_read_config32(PCH_LPC_DEV, ETR3) & ~ETR3_CF9GR);
+
+ /* Set up generic decode ranges */
+ if (!dev)
+ return;
+ if (dev->chip_info)
+ config = dev->chip_info;
+ if (!config)
+ return;
+
+ pci_write_config32(PCH_LPC_DEV, LPC_GEN1_DEC, config->gen1_dec);
+ pci_write_config32(PCH_LPC_DEV, LPC_GEN2_DEC, config->gen2_dec);
+ pci_write_config32(PCH_LPC_DEV, LPC_GEN3_DEC, config->gen3_dec);
+ pci_write_config32(PCH_LPC_DEV, LPC_GEN4_DEC, config->gen4_dec);
+}
+
+static void early_gpio_init(void)
+{
+ pci_write_config32(PCH_LPC_DEV, GPIO_BASE, DEFAULT_GPIOBASE | 1);
+ pci_write_config8(PCH_LPC_DEV, GPIO_CNTL, 0x10);
+
+ setup_pch_gpios(&mainboard_gpio_map);
+}
+
+static void pch_default_disable(void)
+{
+ /* Must set BIT0 (hides performance counters PCI device).
+ coreboot enables the Rate Matching Hub which makes the UHCI PCI
+ devices disappear, so BIT5-12 and BIT28 can be set to hide those. */
+ RCBA32(FD) = (1 << 28) | (0xff << 5) | 1;
+
+ /* Set reserved bit to 1 */
+ RCBA32(FD2) = 1;
+}
+
+void early_pch_init(void)
+{
+ early_lpc_init();
+ mainboard_lpc_init();
+ early_gpio_init();
+ /* TODO, make this configurable */
+ pch_setup_cir(NEHALEM_MOBILE);
+ southbridge_configure_default_intmap();
+ pch_default_disable();
+ early_usb_init(mainboard_usb_ports);
+}
diff --git a/src/southbridge/intel/ibexpeak/lpc.c b/src/southbridge/intel/ibexpeak/lpc.c
index e433530bae..a457722ac8 100644
--- a/src/southbridge/intel/ibexpeak/lpc.c
+++ b/src/southbridge/intel/ibexpeak/lpc.c
@@ -465,18 +465,6 @@ static void pch_fixups(struct device *dev)
RCBA32_OR(0x21a8, 0x3);
}
-static void pch_decode_init(struct device *dev)
-{
- config_t *config = dev->chip_info;
-
- printk(BIOS_DEBUG, "pch_decode_init\n");
-
- pci_write_config32(dev, LPC_GEN1_DEC, config->gen1_dec);
- pci_write_config32(dev, LPC_GEN2_DEC, config->gen2_dec);
- pci_write_config32(dev, LPC_GEN3_DEC, config->gen3_dec);
- pci_write_config32(dev, LPC_GEN4_DEC, config->gen4_dec);
-}
-
static void lpc_init(struct device *dev)
{
printk(BIOS_DEBUG, "pch: lpc_init\n");
@@ -587,12 +575,6 @@ static void pch_lpc_read_resources(struct device *dev)
}
}
-static void pch_lpc_enable_resources(struct device *dev)
-{
- pch_decode_init(dev);
- return pci_dev_enable_resources(dev);
-}
-
static void pch_lpc_enable(struct device *dev)
{
/* Enable PCH Display Port */
@@ -794,7 +776,7 @@ static struct pci_operations pci_ops = {
static struct device_operations device_ops = {
.read_resources = pch_lpc_read_resources,
.set_resources = pci_dev_set_resources,
- .enable_resources = pch_lpc_enable_resources,
+ .enable_resources = pci_dev_enable_resources,
.acpi_inject_dsdt_generator = southbridge_inject_dsdt,
.acpi_fill_ssdt_generator = southbridge_fill_ssdt,
.acpi_name = lpc_acpi_name,
diff --git a/src/southbridge/intel/ibexpeak/pch.h b/src/southbridge/intel/ibexpeak/pch.h
index fbe88a5d7c..b9632371ac 100644
--- a/src/southbridge/intel/ibexpeak/pch.h
+++ b/src/southbridge/intel/ibexpeak/pch.h
@@ -62,6 +62,8 @@ int smbus_block_read(unsigned device, unsigned cmd, u8 bytes, u8 *buf);
int smbus_block_write(unsigned device, unsigned cmd, u8 bytes, const u8 *buf);
#endif
+void early_pch_init(void);
+
void early_thermal_init(void);
void southbridge_configure_default_intmap(void);
void pch_setup_cir(int chipset_type);