Add support for Sandybridge base Samsung ChromeBox
Change-Id: Ic93ad2749834c8f7a2ca1651d343561f2a496312
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/953
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/src/mainboard/samsung/stumpy/romstage.c b/src/mainboard/samsung/stumpy/romstage.c
new file mode 100644
index 0000000..c7c392d
--- /dev/null
+++ b/src/mainboard/samsung/stumpy/romstage.c
@@ -0,0 +1,391 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2010 coresystems GmbH
+ * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved.
+ *
+ * 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 <stdint.h>
+#include <string.h>
+#include <lib.h>
+#include <timestamp.h>
+#include <arch/io.h>
+#include <arch/romcc_io.h>
+#include <device/pci_def.h>
+#include <device/pnp_def.h>
+#include <cpu/x86/lapic.h>
+#include <pc80/mc146818rtc.h>
+#include <cbmem.h>
+#include <console/console.h>
+#include "superio/ite/it8772f/it8772f.h"
+#include "superio/ite/it8772f/early_serial.c"
+#include "northbridge/intel/sandybridge/sandybridge.h"
+#include "northbridge/intel/sandybridge/raminit.h"
+#include "southbridge/intel/bd82x6x/pch.h"
+#include "southbridge/intel/bd82x6x/gpio.h"
+#include <arch/cpu.h>
+#include <cpu/x86/bist.h>
+#include <cpu/x86/msr.h>
+#include "gpio.h"
+#if CONFIG_CONSOLE_SERIAL8250
+#include "superio/smsc/lpc47n207/lpc47n207.h"
+#include "superio/smsc/lpc47n207/early_serial.c"
+#endif
+#if CONFIG_CHROMEOS
+#include <vendorcode/google/chromeos/chromeos.h>
+#endif
+
+/* Stumpy USB Reset Disable defined in cmos.layout */
+#if CONFIG_USE_OPTION_TABLE
+#include "option_table.h"
+#define CMOS_USB_RESET_DISABLE (CMOS_VSTART_stumpy_usb_reset_disable >> 3)
+#else
+#define CMOS_USB_RESET_DISABLE (400 >> 3)
+#endif
+#define USB_RESET_DISABLE_MAGIC (0xdd) /* Disable if set to this */
+
+static void pch_enable_lpc(void)
+{
+ /* Set COM1/COM2 decode range */
+ pci_write_config16(PCH_LPC_DEV, LPC_IO_DEC, 0x0010);
+
+#if CONFIG_CONSOLE_SERIAL8250
+ /* Enable SuperIO + PS/2 Keyboard/Mouse + COM1 + lpc47n207 config*/
+ pci_write_config16(PCH_LPC_DEV, LPC_EN, CNF1_LPC_EN | KBC_LPC_EN |\
+ CNF2_LPC_EN | COMA_LPC_EN);
+
+ /* map full 256 bytes at 0x1600 to the LPC bus */
+ pci_write_config32(PCH_LPC_DEV, LPC_GEN1_DEC, 0xfc1601);
+
+ try_enabling_LPC47N207_uart();
+#else
+ /* Enable SuperIO + PS/2 Keyboard/Mouse */
+ pci_write_config16(PCH_LPC_DEV, LPC_EN, CNF1_LPC_EN | KBC_LPC_EN);
+#endif
+}
+
+static void rcba_config(void)
+{
+ u32 reg32;
+
+ /*
+ * GFX INTA -> PIRQA (MSI)
+ * D28IP_P1IP WLAN INTA -> PIRQB
+ * D28IP_P4IP ETH0 INTB -> PIRQC
+ * D29IP_E1P EHCI1 INTA -> PIRQD
+ * D26IP_E2P EHCI2 INTA -> PIRQE
+ * D31IP_SIP SATA INTA -> PIRQF (MSI)
+ * D31IP_SMIP SMBUS INTB -> PIRQG
+ * D31IP_TTIP THRT INTC -> PIRQH
+ * D27IP_ZIP HDA INTA -> PIRQG (MSI)
+ */
+
+ /* Device interrupt pin register (board specific) */
+ RCBA32(D31IP) = (INTC << D31IP_TTIP) | (NOINT << D31IP_SIP2) |
+ (INTB << D31IP_SMIP) | (INTA << D31IP_SIP);
+ RCBA32(D30IP) = (NOINT << D30IP_PIP);
+ RCBA32(D29IP) = (INTA << D29IP_E1P);
+ RCBA32(D28IP) = (INTA << D28IP_P1IP) | (INTC << D28IP_P3IP) |
+ (INTB << D28IP_P4IP);
+ RCBA32(D27IP) = (INTA << D27IP_ZIP);
+ RCBA32(D26IP) = (INTA << D26IP_E2P);
+ RCBA32(D25IP) = (NOINT << D25IP_LIP);
+ RCBA32(D22IP) = (NOINT << D22IP_MEI1IP);
+
+ /* Device interrupt route registers */
+ DIR_ROUTE(D31IR, PIRQF, PIRQG, PIRQH, PIRQA);
+ DIR_ROUTE(D29IR, PIRQD, PIRQE, PIRQF, PIRQG);
+ DIR_ROUTE(D28IR, PIRQB, PIRQC, PIRQD, PIRQE);
+ DIR_ROUTE(D27IR, PIRQG, PIRQH, PIRQA, PIRQB);
+ DIR_ROUTE(D26IR, PIRQE, PIRQF, PIRQG, PIRQH);
+ DIR_ROUTE(D25IR, PIRQA, PIRQB, PIRQC, PIRQD);
+ DIR_ROUTE(D22IR, PIRQA, PIRQB, PIRQC, PIRQD);
+
+ /* Enable IOAPIC (generic) */
+ RCBA16(OIC) = 0x0100;
+ /* PCH BWG says to read back the IOAPIC enable register */
+ (void) RCBA16(OIC);
+
+ /* Enable upper 128bytes of CMOS (generic) */
+ RCBA32(RC) = (1 << 2);
+
+ /* Disable unused devices (board specific) */
+ reg32 = RCBA32(FD);
+ reg32 |= PCH_DISABLE_ALWAYS;
+ RCBA32(FD) = reg32;
+}
+
+static void early_pch_init(void)
+{
+ u8 reg8;
+
+ // reset rtc power status
+ reg8 = pci_read_config8(PCH_LPC_DEV, 0xa4);
+ reg8 &= ~(1 << 2);
+ pci_write_config8(PCH_LPC_DEV, 0xa4, reg8);
+}
+
+static void setup_sio_gpios(void)
+{
+ /*
+ * GPIO10 as USBPWRON12#
+ * GPIO12 as USBPWRON13#
+ */
+ it8772f_gpio_setup(1, 0x05, 0x05, 0x00, 0x05, 0x05);
+
+ /*
+ * GPIO22 as wake SCI#
+ */
+ it8772f_gpio_setup(2, 0x04, 0x04, 0x00, 0x04, 0x04);
+
+ /*
+ * GPIO32 as EXTSMI#
+ */
+ it8772f_gpio_setup(3, 0x04, 0x04, 0x00, 0x04, 0x04);
+
+ /*
+ * GPIO45 as LED_POWER#
+ */
+ it8772f_gpio_setup(4, 0x20, 0x20, 0x20, 0x20, 0x20);
+
+ /*
+ * GPIO51 as USBPWRON8#
+ * GPIO52 as USBPWRON1#
+ */
+ it8772f_gpio_setup(5, 0x06, 0x06, 0x00, 0x06, 0x06);
+ it8772f_gpio_setup(6, 0x00, 0x00, 0x00, 0x00, 0x00);
+}
+
+void main(unsigned long bist)
+{
+ int boot_mode = 0;
+ int cbmem_was_initted;
+ u32 pm1_cnt;
+ u16 pm1_sts;
+
+#if CONFIG_COLLECT_TIMESTAMPS
+ tsc_t start_romstage_time;
+ tsc_t before_dram_time;
+ tsc_t after_dram_time;
+ tsc_t base_time = {
+ .lo = pci_read_config32(PCI_DEV(0, 0x00, 0), 0xdc),
+ .hi = pci_read_config32(PCI_DEV(0, 0x1f, 2), 0xd0)
+ };
+#endif
+ struct pei_data pei_data = {
+ mchbar: 0xfed10000,
+ dmibar: 0xfed18000,
+ epbar: 0xfed19000,
+ pciexbar: 0xf0000000,
+ smbusbar: 0x400,
+ wdbbar: 0x4000000,
+ wdbsize: 0x1000,
+ hpet_address: 0xfed00000,
+ rcba: 0xfed1c000,
+ pmbase: 0x500,
+ gpiobase: 0x480,
+ thermalbase: 0xfed08000,
+ system_type: 0, // 0 Mobile, 1 Desktop/Server
+ tseg_size: CONFIG_SMM_TSEG_SIZE,
+ spd_addresses: { 0x50, 0x00,0x52,0x00 },
+ ts_addresses: { 0x00, 0x00, 0x00, 0x00 },
+ ec_present: 0,
+ // 0 = leave channel enabled
+ // 1 = disable dimm 0 on channel
+ // 2 = disable dimm 1 on channel
+ // 3 = disable dimm 0+1 on channel
+ dimm_channel0_disabled: 2,
+ dimm_channel1_disabled: 2,
+ usb_port_config: {
+ { 1, 0, 0x0080 }, /* P0: Front port (OC0) */
+ { 1, 1, 0x0040 }, /* P1: Back port (OC1) */
+ { 1, 0, 0x0040 }, /* P2: MINIPCIE1 (no OC) */
+ { 1, 0, 0x0040 }, /* P3: MMC (no OC) */
+ { 1, 2, 0x0080 }, /* P4: Front port (OC2) */
+ { 0, 0, 0x0000 }, /* P5: Empty */
+ { 0, 0, 0x0000 }, /* P6: Empty */
+ { 0, 0, 0x0000 }, /* P7: Empty */
+ { 1, 4, 0x0040 }, /* P8: Back port (OC4) */
+ { 1, 4, 0x0040 }, /* P9: MINIPCIE3 (no OC) */
+ { 1, 4, 0x0040 }, /* P10: BLUETOOTH (no OC) */
+ { 0, 4, 0x0000 }, /* P11: Empty */
+ { 1, 6, 0x0040 }, /* P12: Back port (OC6) */
+ { 1, 5, 0x0040 }, /* P13: Back port (OC5) */
+ },
+ };
+
+#if CONFIG_COLLECT_TIMESTAMPS
+ start_romstage_time = rdtsc();
+#endif
+
+ if (bist == 0)
+ enable_lapic();
+
+ pch_enable_lpc();
+
+ /* Enable GPIOs */
+ pci_write_config32(PCH_LPC_DEV, GPIO_BASE, DEFAULT_GPIOBASE|1);
+ pci_write_config8(PCH_LPC_DEV, GPIO_CNTL, 0x10);
+ setup_pch_gpios(&stumpy_gpio_map);
+ setup_sio_gpios();
+
+ /* Early SuperIO setup */
+ it8772f_kill_watchdog();
+ it8772f_ac_resume_southbridge();
+ it8772f_enable_serial(PNP_DEV(IT8772F_BASE, IT8772F_SP1),
+ CONFIG_TTYS0_BASE);
+ console_init();
+
+#if CONFIG_CHROMEOS
+ save_chromeos_gpios();
+#endif
+
+ /* Halt if there was a built in self test failure */
+ report_bist_failure(bist);
+
+ if (MCHBAR16(SSKPD) == 0xCAFE) {
+ printk(BIOS_DEBUG, "soft reset detected\n");
+ boot_mode = 1;
+
+ /* System is not happy after keyboard reset... */
+ printk(BIOS_DEBUG, "Issuing CF9 warm reset\n");
+ outb(0x6, 0xcf9);
+ hlt();
+ }
+
+ /* Perform some early chipset initialization required
+ * before RAM initialization can work
+ */
+ sandybridge_early_initialization(SANDYBRIDGE_MOBILE);
+ printk(BIOS_DEBUG, "Back from sandybridge_early_initialization()\n");
+
+ /* Check PM1_STS[15] to see if we are waking from Sx */
+ pm1_sts = inw(DEFAULT_PMBASE + PM1_STS);
+
+ /* Read PM1_CNT[12:10] to determine which Sx state */
+ pm1_cnt = inl(DEFAULT_PMBASE + PM1_CNT);
+
+ if ((pm1_sts & WAK_STS) && ((pm1_cnt >> 10) & 7) == 5) {
+#if CONFIG_HAVE_ACPI_RESUME
+ printk(BIOS_DEBUG, "Resume from S3 detected.\n");
+ boot_mode = 2;
+ /* Clear SLP_TYPE. This will break stage2 but
+ * we care for that when we get there.
+ */
+ outl(pm1_cnt & ~(7 << 10), DEFAULT_PMBASE + PM1_CNT);
+#else
+ printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n");
+#endif
+ }
+
+ post_code(0x38);
+ /* Enable SPD ROMs and DDR-III DRAM */
+ enable_smbus();
+
+ /* Prepare USB controller early in S3 resume */
+ if (boot_mode == 2) {
+ /*
+ * For Stumpy the back USB ports are reset on resume
+ * so default to resetting the controller to make the
+ * kernel happy. There is a CMOS flag to disable the
+ * controller reset in case the kernel can tolerate
+ * the device power loss better in the future.
+ */
+ u8 magic = cmos_read(CMOS_USB_RESET_DISABLE);
+
+ if (magic == USB_RESET_DISABLE_MAGIC) {
+ printk(BIOS_DEBUG, "USB Controller Reset Disabled\n");
+ enable_usb_bar();
+ } else {
+ printk(BIOS_DEBUG, "USB Controller Reset Enabled\n");
+ }
+ } else {
+ /* Ensure USB reset on resume is enabled at boot */
+ cmos_write(0, CMOS_USB_RESET_DISABLE);
+ }
+
+ post_code(0x39);
+ pei_data.boot_mode = boot_mode;
+#if CONFIG_COLLECT_TIMESTAMPS
+ before_dram_time = rdtsc();
+#endif
+ sdram_initialize(&pei_data);
+
+#if CONFIG_COLLECT_TIMESTAMPS
+ after_dram_time = rdtsc();
+#endif
+ post_code(0x3a);
+ /* Perform some initialization that must run before stage2 */
+ early_pch_init();
+ post_code(0x3b);
+
+ rcba_config();
+ post_code(0x3c);
+
+ /* Initialize the internal PCIe links before we go into stage2 */
+ sandybridge_late_initialization();
+
+ post_code(0x3e);
+ quick_ram_check();
+
+ MCHBAR16(SSKPD) = 0xCAFE;
+#if CONFIG_EARLY_CBMEM_INIT
+ cbmem_was_initted = !cbmem_initialize();
+#else
+ cbmem_was_initted = cbmem_reinit((uint64_t) (get_top_of_ram()
+ - HIGH_MEMORY_SIZE));
+#endif
+
+#if CONFIG_HAVE_ACPI_RESUME
+ /* If there is no high memory area, we didn't boot before, so
+ * this is not a resume. In that case we just create the cbmem toc.
+ */
+
+ *(u32 *)CBMEM_BOOT_MODE = 0;
+ *(u32 *)CBMEM_RESUME_BACKUP = 0;
+
+ if ((boot_mode == 2) && cbmem_was_initted) {
+ void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
+ if (resume_backup_memory) {
+ *(u32 *)CBMEM_BOOT_MODE = boot_mode;
+ *(u32 *)CBMEM_RESUME_BACKUP = (u32)resume_backup_memory;
+ }
+ /* Magic for S3 resume */
+ pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d);
+ } else if (boot_mode == 2) {
+ /* Failed S3 resume, reset to come up cleanly */
+ outb(0x6, 0xcf9);
+ hlt();
+ } else {
+ pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafebabe);
+ }
+#endif
+ post_code(0x3f);
+#if CONFIG_CHROMEOS
+ init_chromeos(boot_mode);
+#endif
+#if CONFIG_COLLECT_TIMESTAMPS
+ timestamp_init(base_time);
+ timestamp_add(TS_START_ROMSTAGE, start_romstage_time );
+ timestamp_add(TS_BEFORE_INITRAM, before_dram_time );
+ timestamp_add(TS_AFTER_INITRAM, after_dram_time );
+ timestamp_add_now(TS_END_ROMSTAGE);
+#endif
+#if CONFIG_CONSOLE_CBMEM
+ /* Keep this the last thing this function does. */
+ cbmemc_reinit();
+#endif
+}