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author | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2012-04-27 23:19:58 +0200 |
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committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2012-04-30 23:09:10 +0200 |
commit | 155e9b5533131f4b944ebb7e5714a871a1294dda (patch) | |
tree | 6d3cbc7a1442648560f94675a34268bbe1671e17 /src/mainboard/samsung/lumpy/romstage.c | |
parent | 6651da3bcd51ad6ea918c21564eb505b76c8c7aa (diff) | |
download | coreboot-155e9b5533131f4b944ebb7e5714a871a1294dda.tar.xz |
Add support for Sandybridge based Samsung ChromeBook
Change-Id: I8bf439bc903c1ec105016866753c7cb9ccfe5974
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/952
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/mainboard/samsung/lumpy/romstage.c')
-rw-r--r-- | src/mainboard/samsung/lumpy/romstage.c | 387 |
1 files changed, 387 insertions, 0 deletions
diff --git a/src/mainboard/samsung/lumpy/romstage.c b/src/mainboard/samsung/lumpy/romstage.c new file mode 100644 index 0000000000..7aa4746948 --- /dev/null +++ b/src/mainboard/samsung/lumpy/romstage.c @@ -0,0 +1,387 @@ +/* + * 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 <cbfs.h> +#include <cbmem.h> +#include <console/console.h> +#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 "option_table.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 + +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 + EC + KBC + COM1 + lpc47n207 config*/ + pci_write_config16(PCH_LPC_DEV, LPC_EN, CNF1_LPC_EN | MC_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 + EC + KBC */ + pci_write_config16(PCH_LPC_DEV, LPC_EN, CNF1_LPC_EN | MC_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 (MSI) + * D29IP_E1P EHCI1 INTA -> PIRQD + * D26IP_E2P EHCI2 INTA -> PIRQB + * D31IP_SIP SATA INTA -> PIRQA (MSI) + * D31IP_SMIP SMBUS INTC -> PIRQH + * D31IP_TTIP THRT INTB -> PIRQG + * D27IP_ZIP HDA INTA -> PIRQG (MSI) + * + * LIGHTSENSOR -> PIRQE (Edge Triggered) + * TRACKPAD -> PIRQF (Edge Triggered) + */ + + /* Device interrupt pin register (board specific) */ + RCBA32(D31IP) = (INTB << D31IP_TTIP) | (NOINT << D31IP_SIP2) | + (INTC << 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, PIRQA, PIRQG, PIRQH, PIRQB); + DIR_ROUTE(D29IR, PIRQD, PIRQE, PIRQG, PIRQH); + DIR_ROUTE(D28IR, PIRQB, PIRQC, PIRQD, PIRQE); + DIR_ROUTE(D27IR, PIRQG, PIRQH, PIRQA, PIRQB); + DIR_ROUTE(D26IR, PIRQB, PIRQC, PIRQD, PIRQA); + 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); +} + +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, 0x00,0xf0,0x00 }, + .ts_addresses = { 0x30, 0x00, 0x00, 0x00 }, + .ec_present = 1, + // 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: Port 0 (OC0) */ + { 1, 1, 0x0080 }, /* P1: Port 1 (OC1) */ + { 1, 0, 0x0040 }, /* P2: MINIPCIE1 (no OC) */ + { 1, 0, 0x0040 }, /* P3: MMC (no OC) */ + { 0, 0, 0x0000 }, /* P4: Empty */ + { 0, 0, 0x0000 }, /* P5: Empty */ + { 0, 0, 0x0000 }, /* P6: Empty */ + { 0, 0, 0x0000 }, /* P7: Empty */ + { 1, 4, 0x0040 }, /* P8: MINIPCIE2 (no OC) */ + { 0, 4, 0x0000 }, /* P9: Empty */ + { 0, 4, 0x0000 }, /* P10: Empty */ + { 1, 4, 0x0040 }, /* P11: Camera (no OC) */ + { 0, 4, 0x0000 }, /* P12: Empty */ + { 0, 4, 0x0000 }, /* P13: Empty */ + }, + .spd_data = { + } + }; + + typedef const uint8_t spd_blob[256]; + struct cbfs_file *spd_file; + spd_blob *spd_data; + + +#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(&lumpy_gpio_map); + + 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) + enable_usb_bar(); + + u32 gp_lvl2 = inl(DEFAULT_GPIOBASE + 0x38); + u8 gpio33, gpio41, gpio49; + gpio33 = (gp_lvl2 >> (33-32)) & 1; + gpio41 = (gp_lvl2 >> (41-32)) & 1; + gpio49 = (gp_lvl2 >> (49-32)) & 1; + printk(BIOS_DEBUG, "Memory Straps:\n"); + printk(BIOS_DEBUG, " - memory capacity %dGB\n", + gpio33 ? 2 : 1); + printk(BIOS_DEBUG, " - die revision %d\n", + gpio41 ? 2 : 1); + printk(BIOS_DEBUG, " - vendor %s\n", + gpio49 ? "Samsung" : "Other"); + + int spd_index = 0; + + switch ((gpio49 << 2) | (gpio41 << 1) | gpio33) { + case 0: // Other 1G Rev 1 + spd_index = 0; + break; + case 2: // Other 1G Rev 2 + spd_index = 1; + break; + case 1: // Other 2G Rev 1 + case 3: // Other 2G Rev 2 + spd_index = 2; + break; + case 4: // Samsung 1G Rev 1 + spd_index = 3; + break; + case 6: // Samsung 1G Rev 2 + spd_index = 4; + break; + case 5: // Samsung 2G Rev 1 + case 7: // Samsung 2G Rev 2 + spd_index = 5; + break; + } + + spd_file = cbfs_find("spd.bin"); + if (!spd_file) + die("SPD data not found."); + if (spd_file->len < (spd_index + 1) * 256) + die("Missing SPD data."); + spd_data = (spd_blob *)CBFS_SUBHEADER(spd_file); + // leave onboard dimm address at f0, and copy spd data there. + memcpy(pei_data.spd_data[0], spd_data[spd_index], 256); + + 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 +} |