first round name simplification. drop the <component>_ prefix.

the prefix was introduced in the early v2 tree many years ago
because our old build system "newconfig" could not handle two files with
the same name in different paths like /path/to/usb.c and
/another/path/to/usb.c correctly. Only one of the files would end up
being compiled into the final image.

Since Kconfig (actually since shortly before we switched to Kconfig) we
don't suffer from that problem anymore. So we could drop the sb700_
prefix from all those filenames (or, the <componentname>_ prefix in general)

- makes it easier to fork off a new chipset
- makes it easier to diff against other chipsets
- storing redundant information in filenames seems wrong

Signed-off-by: <stepan@coresystems.de>

Acked-by: Patrick Georgi <patrick@georgi-clan.de>
Acked-by: Peter Stuge <peter@stuge.se>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6149 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 368 insertions, 0 deletions

diff --git a/src/southbridge/intel/i82801dx/smi.c b/src/southbridge/intel/i82801dx/smi.c
new file mode 100644
index 0000000000..55d8a70965
--- /dev/null
+++ b/src/southbridge/intel/i82801dx/smi.c
@@ -0,0 +1,368 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+
+#include <device/device.h>
+#include <device/pci.h>
+#include <console/console.h>
+#include <arch/io.h>
+#include <cpu/cpu.h>
+#include <cpu/x86/cache.h>
+#include <cpu/x86/smm.h>
+#include <string.h>
+#include "i82801dx.h"
+
+extern unsigned char _binary_smm_start;
+extern unsigned char _binary_smm_size;
+
+/* I945 */
+#define SMRAM		0x90
+#define   D_OPEN	(1 << 6)
+#define   D_CLS		(1 << 5)
+#define   D_LCK		(1 << 4)
+#define   G_SMRAME	(1 << 3)
+#define   C_BASE_SEG	((0 << 2) | (1 << 1) | (0 << 0))
+
+/* While we read PMBASE dynamically in case it changed, let's
+ * initialize it with a sane value
+ */
+static u16 pmbase = PMBASE_ADDR;
+
+/**
+ * @brief read and clear PM1_STS
+ * @return PM1_STS register
+ */
+static u16 reset_pm1_status(void)
+{
+	u16 reg16;
+
+	reg16 = inw(pmbase + PM1_STS);
+	/* set status bits are cleared by writing 1 to them */
+	outw(reg16, pmbase + PM1_STS);
+
+	return reg16;
+}
+
+static void dump_pm1_status(u16 pm1_sts)
+{
+	printk(BIOS_DEBUG, "PM1_STS: ");
+	if (pm1_sts & (1 << 15)) printk(BIOS_DEBUG, "WAK ");
+	if (pm1_sts & (1 << 14)) printk(BIOS_DEBUG, "PCIEXPWAK ");
+	if (pm1_sts & (1 << 11)) printk(BIOS_DEBUG, "PRBTNOR ");
+	if (pm1_sts & (1 << 10)) printk(BIOS_DEBUG, "RTC ");
+	if (pm1_sts & (1 <<  8)) printk(BIOS_DEBUG, "PWRBTN ");
+	if (pm1_sts & (1 <<  5)) printk(BIOS_DEBUG, "GBL ");
+	if (pm1_sts & (1 <<  4)) printk(BIOS_DEBUG, "BM ");
+	if (pm1_sts & (1 <<  0)) printk(BIOS_DEBUG, "TMROF ");
+	printk(BIOS_DEBUG, "\n");
+}
+
+/**
+ * @brief read and clear SMI_STS
+ * @return SMI_STS register
+ */
+static u32 reset_smi_status(void)
+{
+	u32 reg32;
+
+	reg32 = inl(pmbase + SMI_STS);
+	/* set status bits are cleared by writing 1 to them */
+	outl(reg32, pmbase + SMI_STS);
+
+	return reg32;
+}
+
+static void dump_smi_status(u32 smi_sts)
+{
+	printk(BIOS_DEBUG, "SMI_STS: ");
+	if (smi_sts & (1 << 26)) printk(BIOS_DEBUG, "SPI ");
+	if (smi_sts & (1 << 25)) printk(BIOS_DEBUG, "EL_SMI ");
+	if (smi_sts & (1 << 21)) printk(BIOS_DEBUG, "MONITOR ");
+	if (smi_sts & (1 << 20)) printk(BIOS_DEBUG, "PCI_EXP_SMI ");
+	if (smi_sts & (1 << 18)) printk(BIOS_DEBUG, "INTEL_USB2 ");
+	if (smi_sts & (1 << 17)) printk(BIOS_DEBUG, "LEGACY_USB2 ");
+	if (smi_sts & (1 << 16)) printk(BIOS_DEBUG, "SMBUS_SMI ");
+	if (smi_sts & (1 << 15)) printk(BIOS_DEBUG, "SERIRQ_SMI ");
+	if (smi_sts & (1 << 14)) printk(BIOS_DEBUG, "PERIODIC ");
+	if (smi_sts & (1 << 13)) printk(BIOS_DEBUG, "TCO ");
+	if (smi_sts & (1 << 12)) printk(BIOS_DEBUG, "DEVMON ");
+	if (smi_sts & (1 << 11)) printk(BIOS_DEBUG, "MCSMI ");
+	if (smi_sts & (1 << 10)) printk(BIOS_DEBUG, "GPI ");
+	if (smi_sts & (1 <<  9)) printk(BIOS_DEBUG, "GPE0 ");
+	if (smi_sts & (1 <<  8)) printk(BIOS_DEBUG, "PM1 ");
+	if (smi_sts & (1 <<  6)) printk(BIOS_DEBUG, "SWSMI_TMR ");
+	if (smi_sts & (1 <<  5)) printk(BIOS_DEBUG, "APM ");
+	if (smi_sts & (1 <<  4)) printk(BIOS_DEBUG, "SLP_SMI ");
+	if (smi_sts & (1 <<  3)) printk(BIOS_DEBUG, "LEGACY_USB ");
+	if (smi_sts & (1 <<  2)) printk(BIOS_DEBUG, "BIOS ");
+	printk(BIOS_DEBUG, "\n");
+}
+
+
+/**
+ * @brief read and clear GPE0_STS
+ * @return GPE0_STS register
+ */
+static u32 reset_gpe0_status(void)
+{
+	u32 reg32;
+
+	reg32 = inl(pmbase + GPE0_STS);
+	/* set status bits are cleared by writing 1 to them */
+	outl(reg32, pmbase + GPE0_STS);
+
+	return reg32;
+}
+
+static void dump_gpe0_status(u32 gpe0_sts)
+{
+	int i;
+	printk(BIOS_DEBUG, "GPE0_STS: ");
+	for (i=31; i<= 16; i--) {
+		if (gpe0_sts & (1 << i)) printk(BIOS_DEBUG, "GPIO%d ", (i-16));
+	}
+	if (gpe0_sts & (1 << 14)) printk(BIOS_DEBUG, "USB4 ");
+	if (gpe0_sts & (1 << 13)) printk(BIOS_DEBUG, "PME_B0 ");
+	if (gpe0_sts & (1 << 12)) printk(BIOS_DEBUG, "USB3 ");
+	if (gpe0_sts & (1 << 11)) printk(BIOS_DEBUG, "PME ");
+	if (gpe0_sts & (1 << 10)) printk(BIOS_DEBUG, "EL_SCI/BATLOW ");
+	if (gpe0_sts & (1 <<  9)) printk(BIOS_DEBUG, "PCI_EXP ");
+	if (gpe0_sts & (1 <<  8)) printk(BIOS_DEBUG, "RI ");
+	if (gpe0_sts & (1 <<  7)) printk(BIOS_DEBUG, "SMB_WAK ");
+	if (gpe0_sts & (1 <<  6)) printk(BIOS_DEBUG, "TCO_SCI ");
+	if (gpe0_sts & (1 <<  5)) printk(BIOS_DEBUG, "AC97 ");
+	if (gpe0_sts & (1 <<  4)) printk(BIOS_DEBUG, "USB2 ");
+	if (gpe0_sts & (1 <<  3)) printk(BIOS_DEBUG, "USB1 ");
+	if (gpe0_sts & (1 <<  2)) printk(BIOS_DEBUG, "HOT_PLUG ");
+	if (gpe0_sts & (1 <<  0)) printk(BIOS_DEBUG, "THRM ");
+	printk(BIOS_DEBUG, "\n");
+}
+
+
+/**
+ * @brief read and clear ALT_GP_SMI_STS
+ * @return ALT_GP_SMI_STS register
+ */
+static u16 reset_alt_gp_smi_status(void)
+{
+	u16 reg16;
+
+	reg16 = inl(pmbase + ALT_GP_SMI_STS);
+	/* set status bits are cleared by writing 1 to them */
+	outl(reg16, pmbase + ALT_GP_SMI_STS);
+
+	return reg16;
+}
+
+static void dump_alt_gp_smi_status(u16 alt_gp_smi_sts)
+{
+	int i;
+	printk(BIOS_DEBUG, "ALT_GP_SMI_STS: ");
+	for (i=15; i<= 0; i--) {
+		if (alt_gp_smi_sts & (1 << i)) printk(BIOS_DEBUG, "GPI%d ", (i-16));
+	}
+	printk(BIOS_DEBUG, "\n");
+}
+
+
+
+/**
+ * @brief read and clear TCOx_STS
+ * @return TCOx_STS registers
+ */
+static u32 reset_tco_status(void)
+{
+	u32 tcobase = pmbase + 0x60;
+	u32 reg32;
+
+	reg32 = inl(tcobase + 0x04);
+	/* set status bits are cleared by writing 1 to them */
+	outl(reg32 & ~(1<<18), tcobase + 0x04); //  Don't clear BOOT_STS before SECOND_TO_STS
+	if (reg32 & (1 << 18))
+		outl(reg32 & (1<<18), tcobase + 0x04); // clear BOOT_STS
+
+	return reg32;
+}
+
+
+static void dump_tco_status(u32 tco_sts)
+{
+	printk(BIOS_DEBUG, "TCO_STS: ");
+	if (tco_sts & (1 << 20)) printk(BIOS_DEBUG, "SMLINK_SLV ");
+	if (tco_sts & (1 << 18)) printk(BIOS_DEBUG, "BOOT ");
+	if (tco_sts & (1 << 17)) printk(BIOS_DEBUG, "SECOND_TO ");
+	if (tco_sts & (1 << 16)) printk(BIOS_DEBUG, "INTRD_DET ");
+	if (tco_sts & (1 << 12)) printk(BIOS_DEBUG, "DMISERR ");
+	if (tco_sts & (1 << 10)) printk(BIOS_DEBUG, "DMISMI ");
+	if (tco_sts & (1 <<  9)) printk(BIOS_DEBUG, "DMISCI ");
+	if (tco_sts & (1 <<  8)) printk(BIOS_DEBUG, "BIOSWR ");
+	if (tco_sts & (1 <<  7)) printk(BIOS_DEBUG, "NEWCENTURY ");
+	if (tco_sts & (1 <<  3)) printk(BIOS_DEBUG, "TIMEOUT ");
+	if (tco_sts & (1 <<  2)) printk(BIOS_DEBUG, "TCO_INT ");
+	if (tco_sts & (1 <<  1)) printk(BIOS_DEBUG, "SW_TCO ");
+	if (tco_sts & (1 <<  0)) printk(BIOS_DEBUG, "NMI2SMI ");
+	printk(BIOS_DEBUG, "\n");
+}
+
+
+
+/**
+ * @brief Set the EOS bit
+ */
+static void smi_set_eos(void)
+{
+	u8 reg8;
+
+	reg8 = inb(pmbase + SMI_EN);
+	reg8 |= EOS;
+	outb(reg8, pmbase + SMI_EN);
+}
+
+extern uint8_t smm_relocation_start, smm_relocation_end;
+
+static void smm_relocate(void)
+{
+	u32 smi_en;
+	u16 pm1_en;
+
+	printk(BIOS_DEBUG, "Initializing SMM handler...");
+
+	pmbase = pci_read_config16(dev_find_slot(0, PCI_DEVFN(0x1f, 0)), 0x40) & 0xfffc;
+	printk(BIOS_SPEW, " ... pmbase = 0x%04x\n", pmbase);
+
+	smi_en = inl(pmbase + SMI_EN);
+	if (smi_en & APMC_EN) {
+		printk(BIOS_INFO, "SMI# handler already enabled?\n");
+		return;
+	}
+
+	/* copy the SMM relocation code */
+	memcpy((void *)0x38000, &smm_relocation_start,
+			&smm_relocation_end - &smm_relocation_start);
+
+	printk(BIOS_DEBUG, "\n");
+	dump_smi_status(reset_smi_status());
+	dump_pm1_status(reset_pm1_status());
+	dump_gpe0_status(reset_gpe0_status());
+	dump_alt_gp_smi_status(reset_alt_gp_smi_status());
+	dump_tco_status(reset_tco_status());
+
+	/* Enable SMI generation:
+	 *  - on TCO events
+	 *  - on APMC writes (io 0xb2)
+	 *  - on writes to SLP_EN (sleep states)
+	 *  - on writes to GBL_RLS (bios commands)
+	 * No SMIs:
+	 *  - on microcontroller writes (io 0x62/0x66)
+	 */
+
+	smi_en = 0; /* reset SMI enables */
+
+#if 0
+	smi_en |= LEGACY_USB2_EN | LEGACY_USB_EN;
+#endif
+	smi_en |= TCO_EN;
+	smi_en |= APMC_EN;
+#if DEBUG_PERIODIC_SMIS
+	/* Set DEBUG_PERIODIC_SMIS in i82801gx.h to debug using
+	 * periodic SMIs.
+	 */
+	smi_en |= PERIODIC_EN;
+#endif
+	smi_en |= SLP_SMI_EN;
+	smi_en |= BIOS_EN;
+
+	/* The following need to be on for SMIs to happen */
+	smi_en |= EOS | GBL_SMI_EN;
+
+	outl(smi_en, pmbase + SMI_EN);
+
+	pm1_en = 0;
+	pm1_en |= PWRBTN_EN;
+	pm1_en |= GBL_EN;
+	outw(pm1_en, pmbase + PM1_EN);
+
+	/**
+	 * There are several methods of raising a controlled SMI# via
+	 * software, among them:
+	 *  - Writes to io 0xb2 (APMC)
+	 *  - Writes to the Local Apic ICR with Delivery mode SMI.
+	 *
+	 * Using the local apic is a bit more tricky. According to
+	 * AMD Family 11 Processor BKDG no destination shorthand must be
+	 * used.
+	 * The whole SMM initialization is quite a bit hardware specific, so
+	 * I'm not too worried about the better of the methods at the moment
+	 */
+
+	/* raise an SMI interrupt */
+	printk(BIOS_SPEW, "  ... raise SMI#\n");
+	outb(0x00, 0xb2);
+}
+
+static void smm_install(void)
+{
+	/* enable the SMM memory window */
+	pci_write_config8(dev_find_slot(0, PCI_DEVFN(0, 0)), SMRAM,
+				D_OPEN | G_SMRAME | C_BASE_SEG);
+
+	/* copy the real SMM handler */
+	memcpy((void *)0xa0000, &_binary_smm_start, (size_t)&_binary_smm_size);
+	wbinvd();
+
+	/* close the SMM memory window and enable normal SMM */
+	pci_write_config8(dev_find_slot(0, PCI_DEVFN(0, 0)), SMRAM,
+			G_SMRAME | C_BASE_SEG);
+}
+
+void smm_init(void)
+{
+	/* Put SMM code to 0xa0000 */
+	smm_install();
+
+	/* Put relocation code to 0x38000 and relocate SMBASE */
+	smm_relocate();
+
+	/* We're done. Make sure SMIs can happen! */
+	smi_set_eos();
+}
+
+void smm_lock(void)
+{
+	/* LOCK the SMM memory window and enable normal SMM.
+	 * After running this function, only a full reset can
+	 * make the SMM registers writable again.
+	 */
+	printk(BIOS_DEBUG, "Locking SMM.\n");
+	pci_write_config8(dev_find_slot(0, PCI_DEVFN(0, 0)), SMRAM,
+			D_LCK | G_SMRAME | C_BASE_SEG);
+}
+
+void smm_setup_structures(void *gnvs, void *tcg, void *smi1)
+{
+	/* The GDT or coreboot table is going to live here. But a long time
+	 * after we relocated the GNVS, so this is not troublesome.
+	 */
+	*(u32 *)0x500 = (u32)gnvs;
+	*(u32 *)0x504 = (u32)tcg;
+	*(u32 *)0x508 = (u32)smi1;
+	outb(0xea, 0xb2);
+}