diff options
Diffstat (limited to 'src/southbridge/intel/bd82x6x/early_me_native.c')
| -rw-r--r-- | src/southbridge/intel/bd82x6x/early_me_native.c | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/src/southbridge/intel/bd82x6x/early_me_native.c b/src/southbridge/intel/bd82x6x/early_me_native.c new file mode 100644 index 0000000000..ab54ffd61c --- /dev/null +++ b/src/southbridge/intel/bd82x6x/early_me_native.c @@ -0,0 +1,272 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 The Chromium OS 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 <arch/hlt.h> +#include <arch/io.h> +#include <console/console.h> +#include <delay.h> +#include <device/pci_ids.h> +#include <string.h> +#include "me.h" +#include "pch.h" + +static const char *me_ack_values[] = { + [ME_HFS_ACK_NO_DID] = "No DID Ack received", + [ME_HFS_ACK_RESET] = "Non-power cycle reset", + [ME_HFS_ACK_PWR_CYCLE] = "Power cycle reset", + [ME_HFS_ACK_S3] = "Go to S3", + [ME_HFS_ACK_S4] = "Go to S4", + [ME_HFS_ACK_S5] = "Go to S5", + [ME_HFS_ACK_GBL_RESET] = "Global Reset", + [ME_HFS_ACK_CONTINUE] = "Continue to boot" +}; + +static inline void pci_read_dword_ptr(void *ptr, int offset) +{ + u32 dword = pci_read_config32(PCH_ME_DEV, offset); + memcpy(ptr, &dword, sizeof(dword)); +} + +static inline void pci_write_dword_ptr(void *ptr, int offset) +{ + u32 dword = 0; + memcpy(&dword, ptr, sizeof(dword)); + pci_write_config32(PCH_ME_DEV, offset, dword); +} + +void intel_early_me_status(void) +{ + struct me_hfs hfs; + struct me_gmes gmes; + + pci_read_dword_ptr(&hfs, PCI_ME_HFS); + pci_read_dword_ptr(&gmes, PCI_ME_GMES); + + intel_me_status(&hfs, &gmes); +} + +int intel_early_me_init(void) +{ + int count; + struct me_uma uma; + struct me_hfs hfs; + + printk(BIOS_INFO, "Intel ME early init\n"); + + /* Wait for ME UMA SIZE VALID bit to be set */ + for (count = ME_RETRY; count > 0; --count) { + pci_read_dword_ptr(&uma, PCI_ME_UMA); + if (uma.valid) + break; + udelay(ME_DELAY); + } + if (!count) { + printk(BIOS_ERR, "ERROR: ME is not ready!\n"); + return -1; + } + + /* Check for valid firmware */ + pci_read_dword_ptr(&hfs, PCI_ME_HFS); + if (hfs.fpt_bad) { + printk(BIOS_WARNING, "WARNING: ME has bad firmware\n"); + return -1; + } + + printk(BIOS_INFO, "Intel ME firmware is ready\n"); + return 0; +} + +int intel_early_me_uma_size(void) +{ + struct me_uma uma; + + pci_read_dword_ptr(&uma, PCI_ME_UMA); + if (uma.valid) { + printk(BIOS_DEBUG, "ME: Requested %uMB UMA\n", uma.size); + return uma.size; + } + + printk(BIOS_DEBUG, "ME: Invalid UMA size\n"); + return 0; +} + +static inline void set_global_reset(int enable) +{ + u32 etr3 = pci_read_config32(PCH_LPC_DEV, ETR3); + + /* Clear CF9 Without Resume Well Reset Enable */ + etr3 &= ~ETR3_CWORWRE; + + /* CF9GR indicates a Global Reset */ + if (enable) + etr3 |= ETR3_CF9GR; + else + etr3 &= ~ETR3_CF9GR; + + pci_write_config32(PCH_LPC_DEV, ETR3, etr3); +} + +int intel_early_me_init_done(u8 status) +{ + u8 reset, errorcode, opmode; + u16 reg16; + u32 mebase_l, mebase_h; + u32 millisec; + u32 hfs, me_fws2; + struct me_did did = { + .init_done = ME_INIT_DONE, + .status = status + }; + u32 meDID; + + hfs = (pci_read_config32(PCI_DEV(0, 0x16, 0), PCI_ME_HFS) & 0xff000) >> 12; + + opmode = (hfs & 0xf0) >> 4; + errorcode = hfs & 0xf; + + if (opmode != ME_HFS_MODE_NORMAL) { + printk(BIOS_NOTICE, "ME: Wrong mode : %d\n", opmode); + //return 0; + } + if (errorcode) { + printk(BIOS_NOTICE, "ME: HFS error : %d\n", errorcode); + //return 0; + } + + me_fws2 = pci_read_config32(PCI_DEV(0, 0x16, 0), 0x48); + printk(BIOS_NOTICE, "ME: FWS2: 0x%x\n", me_fws2); + printk(BIOS_NOTICE, "ME: Bist in progress: 0x%x\n", me_fws2 & 0x1); + printk(BIOS_NOTICE, "ME: ICC Status : 0x%x\n", (me_fws2 & 0x6) >> 1); + printk(BIOS_NOTICE, "ME: Invoke MEBx : 0x%x\n", (me_fws2 & 0x8) >> 3); + printk(BIOS_NOTICE, "ME: CPU replaced : 0x%x\n", (me_fws2 & 0x10) >> 4); + printk(BIOS_NOTICE, "ME: MBP ready : 0x%x\n", (me_fws2 & 0x20) >> 5); + printk(BIOS_NOTICE, "ME: MFS failure : 0x%x\n", (me_fws2 & 0x40) >> 6); + printk(BIOS_NOTICE, "ME: Warm reset req : 0x%x\n", (me_fws2 & 0x80) >> 7); + printk(BIOS_NOTICE, "ME: CPU repl valid : 0x%x\n", (me_fws2 & 0x100) >> 8); + printk(BIOS_NOTICE, "ME: (Reserved) : 0x%x\n", (me_fws2 & 0x600) >> 9); + printk(BIOS_NOTICE, "ME: FW update req : 0x%x\n", (me_fws2 & 0x800) >> 11); + printk(BIOS_NOTICE, "ME: (Reserved) : 0x%x\n", (me_fws2 & 0xf000) >> 12); + printk(BIOS_NOTICE, "ME: Current state : 0x%x\n", (me_fws2 & 0xff0000) >> 16); + printk(BIOS_NOTICE, "ME: Current PM event: 0x%x\n", (me_fws2 & 0xf000000) >> 24); + printk(BIOS_NOTICE, "ME: Progress code : 0x%x\n", (me_fws2 & 0xf0000000) >> 28); + + // Poll cpu replaced for 50ms + millisec = 0; + while ((((me_fws2 & 0x100) >> 8) == 0) && millisec < 50) { + udelay(1000); + me_fws2 = pci_read_config32(PCI_DEV(0, 0x16, 0), 0x48); + millisec++; + } + if (millisec >= 50 || ((me_fws2 & 0x100) >> 8) == 0x0) { + printk(BIOS_NOTICE, "Waited long enough, or CPU was not replaced, continue...\n"); + } else if ((me_fws2 & 0x100) == 0x100) { + if ((me_fws2 & 0x80) == 0x80) { + printk(BIOS_NOTICE, "CPU was replaced & warm reset required...\n"); + reg16 = pcie_read_config16(PCI_DEV(0, 31, 0), 0xa2) & ~0x80; + pcie_write_config16(PCI_DEV(0, 31, 0), 0xa2, reg16); + set_global_reset(0); + outb(0x6, 0xcf9); + hlt(); + } + + if (((me_fws2 & 0x10) == 0x10) && (me_fws2 & 0x80) == 0x00) { + printk(BIOS_NOTICE, "Full training required\n"); + } + } + + printk(BIOS_NOTICE, "PASSED! Tell ME that DRAM is ready\n"); + + /* MEBASE from MESEG_BASE[35:20] */ + mebase_l = pci_read_config32(PCI_CPU_DEVICE, PCI_CPU_MEBASE_L); + mebase_h = pci_read_config32(PCI_CPU_DEVICE, PCI_CPU_MEBASE_H) & 0xf; + did.uma_base = (mebase_l >> 20) | (mebase_h << 12); + + meDID = did.uma_base | (1 << 28);// | (1 << 23); + pci_write_config32(PCI_DEV(0, 0x16, 0), PCI_ME_H_GS, meDID); + + udelay(1100); + + /* Must wait for ME acknowledgement */ + millisec = 0; + hfs = (pci_read_config32(PCI_DEV(0, 0x16, 0), PCI_ME_HFS) & 0xfe000000) >> 24; + while ((((hfs & 0xf0) >> 4) != ME_HFS_BIOS_DRAM_ACK) && (millisec < 5000)) { + udelay(1000); + hfs = (pci_read_config32(PCI_DEV(0, 0x16, 0), PCI_ME_HFS) & 0xfe000000) >> 24; + millisec++; + } + + me_fws2 = pci_read_config32(PCI_DEV(0, 0x16, 0), 0x48); + printk(BIOS_NOTICE, "ME: FWS2: 0x%x\n", me_fws2); + printk(BIOS_NOTICE, "ME: Bist in progress: 0x%x\n", me_fws2 & 0x1); + printk(BIOS_NOTICE, "ME: ICC Status : 0x%x\n", (me_fws2 & 0x6) >> 1); + printk(BIOS_NOTICE, "ME: Invoke MEBx : 0x%x\n", (me_fws2 & 0x8) >> 3); + printk(BIOS_NOTICE, "ME: CPU replaced : 0x%x\n", (me_fws2 & 0x10) >> 4); + printk(BIOS_NOTICE, "ME: MBP ready : 0x%x\n", (me_fws2 & 0x20) >> 5); + printk(BIOS_NOTICE, "ME: MFS failure : 0x%x\n", (me_fws2 & 0x40) >> 6); + printk(BIOS_NOTICE, "ME: Warm reset req : 0x%x\n", (me_fws2 & 0x80) >> 7); + printk(BIOS_NOTICE, "ME: CPU repl valid : 0x%x\n", (me_fws2 & 0x100) >> 8); + printk(BIOS_NOTICE, "ME: (Reserved) : 0x%x\n", (me_fws2 & 0x600) >> 9); + printk(BIOS_NOTICE, "ME: FW update req : 0x%x\n", (me_fws2 & 0x800) >> 11); + printk(BIOS_NOTICE, "ME: (Reserved) : 0x%x\n", (me_fws2 & 0xf000) >> 12); + printk(BIOS_NOTICE, "ME: Current state : 0x%x\n", (me_fws2 & 0xff0000) >> 16); + printk(BIOS_NOTICE, "ME: Current PM event: 0x%x\n", (me_fws2 & 0xf000000) >> 24); + printk(BIOS_NOTICE, "ME: Progress code : 0x%x\n", (me_fws2 & 0xf0000000) >> 28); + + + /* Return the requested BIOS action */ + printk(BIOS_NOTICE, "ME: Requested BIOS Action: %s\n", + me_ack_values[(hfs & 0xe) >> 1]); + + reset = inb(0xcf9); + reset &= 0xf1; + switch ((hfs & 0xe) >> 1) { + case ME_HFS_ACK_NO_DID: + case ME_HFS_ACK_CONTINUE: + /* Continue to boot */ + return 0; + case ME_HFS_ACK_RESET: + /* Non-power cycle reset */ + set_global_reset(0); + reset |= 0x06; + break; + case ME_HFS_ACK_PWR_CYCLE: + /* Power cycle reset */ + set_global_reset(0); + reset |= 0x0e; + break; + case ME_HFS_ACK_GBL_RESET: + /* Global reset */ + set_global_reset(1); + reset |= 0x0e; + break; + case ME_HFS_ACK_S3: + case ME_HFS_ACK_S4: + case ME_HFS_ACK_S5: + break; + } + + /* Perform the requested reset */ + if (reset) { + outb(reset, 0xcf9); + hlt(); + } + return -1; +} |