diff options
Diffstat (limited to 'src/soc/intel/baytrail')
| -rw-r--r-- | src/soc/intel/baytrail/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/baytrail/lpc.h | 13 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/baytrail/msr.h | 7 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/baytrail/pattrs.h | 56 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/baytrail/ramstage.h | 4 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/chip.c | 7 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/ramstage.c | 107 |
7 files changed, 195 insertions, 1 deletions
diff --git a/src/soc/intel/baytrail/Makefile.inc b/src/soc/intel/baytrail/Makefile.inc index d8dcaf6f41..756fd39f8f 100644 --- a/src/soc/intel/baytrail/Makefile.inc +++ b/src/soc/intel/baytrail/Makefile.inc @@ -3,6 +3,7 @@ subdirs-y += romstage subdirs-y += ../../../cpu/x86/lapic subdirs-y += ../../../cpu/x86/mtrr subdirs-y += ../../../cpu/x86/tsc +subdirs-y += ../../../cpu/intel/microcode ramstage-y += memmap.c romstage-y += memmap.c @@ -16,6 +17,7 @@ ramstage-y += chip.c ramstage-y += iosf.c romstage-y += iosf.c ramstage-y += northcluster.c +ramstage-y += ramstage.c # Remove as ramstage gets fleshed out diff --git a/src/soc/intel/baytrail/baytrail/lpc.h b/src/soc/intel/baytrail/baytrail/lpc.h index 17dc4b533c..05220e452d 100644 --- a/src/soc/intel/baytrail/baytrail/lpc.h +++ b/src/soc/intel/baytrail/baytrail/lpc.h @@ -21,6 +21,7 @@ #define _BAYTRAIL_LPC_H_ /* PCI config registers in LPC bridge. */ +#define REVID 0x08 #define ABASE 0x40 #define PBASE 0x44 #define GBASE 0x48 @@ -31,4 +32,16 @@ #define UART_CONT 0x80 #define RCBA 0xf0 + +#define RID_A_STEPPING_START 1 +#define RID_B_STEPPING_START 5 +enum baytrail_stepping { + STEP_A0, + STEP_A1, + STEP_B0, + STEP_B1, + STEP_B2, + STEP_B3, +}; + #endif /* _BAYTRAIL_LPC_H_ */ diff --git a/src/soc/intel/baytrail/baytrail/msr.h b/src/soc/intel/baytrail/baytrail/msr.h index 1934a31354..7f3b3b26fd 100644 --- a/src/soc/intel/baytrail/baytrail/msr.h +++ b/src/soc/intel/baytrail/baytrail/msr.h @@ -20,6 +20,11 @@ #ifndef _BAYTRAIL_MSR_H_ #define _BAYTRAIL_MSR_H_ -#define MSR_PLATFORM_INFO 0xce +#define MSR_IA32_PLATFORM_ID 0x17 +#define MSR_PLATFORM_INFO 0xce +#define MSR_IA32_PERF_CTL 0x199 +#define MSR_IA32_MISC_ENABLES 0x1a0 +#define MSR_IACORE_RATIOS 0x66a +#define MSR_IACORE_VIDS 0x66b #endif /* _BAYTRAIL_IOSF_H_ */ diff --git a/src/soc/intel/baytrail/baytrail/pattrs.h b/src/soc/intel/baytrail/baytrail/pattrs.h new file mode 100644 index 0000000000..7c210b95af --- /dev/null +++ b/src/soc/intel/baytrail/baytrail/pattrs.h @@ -0,0 +1,56 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Google Inc. + * + * 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 + */ + +#ifndef _PATTRS_H_ +#define _PATTRS_H_ + +#include <stdint.h> +#include <cpu/x86/msr.h> + +/* The pattrs structure is a common place to stash pertinent information + * about the processor or platform. Instead of going to the source (msrs, cpuid) + * every time an attribute is needed use the pattrs structure. + */ +struct pattrs { + msr_t platform_id; + msr_t platform_info; + msr_t iacore_ratios; + msr_t iacore_vids; + uint32_t cpuid; + int revid; + int stepping; + const void *microcode_patch; + int address_bits; + int num_cpus; +}; + +/* This is just to hide the abstraction w/o relying on how the underlying + * storage is allocated. */ +#define PATTRS_GLOB_NAME __global_pattrs +#define DEFINE_PATTRS struct pattrs PATTRS_GLOB_NAME +extern DEFINE_PATTRS; + +static inline const struct pattrs *pattrs_get(void) +{ + return &PATTRS_GLOB_NAME; +} + + +#endif /* _PATTRS_H_ */ + diff --git a/src/soc/intel/baytrail/baytrail/ramstage.h b/src/soc/intel/baytrail/baytrail/ramstage.h index 61fe9c3ff7..d1fe0f1d15 100644 --- a/src/soc/intel/baytrail/baytrail/ramstage.h +++ b/src/soc/intel/baytrail/baytrail/ramstage.h @@ -22,6 +22,10 @@ #include <device/device.h> +/* The baytrail_init_pre_device() function is called prior to device + * initialization, but it's after console and cbmem has been reinitialized. */ +void baytrail_init_pre_device(void); + extern struct pci_operations soc_pci_ops; #endif /* _BAYTRAIL_RAMSTAGE_H_ */ diff --git a/src/soc/intel/baytrail/chip.c b/src/soc/intel/baytrail/chip.c index 09c36dfd5d..5a898f6e31 100644 --- a/src/soc/intel/baytrail/chip.c +++ b/src/soc/intel/baytrail/chip.c @@ -68,9 +68,16 @@ static void enable_dev(device_t dev) } } +/* Called at BS_DEV_INIT_CHIPS time -- very early. Just after BS_PRE_DEVICE. */ +static void soc_init(void *chip_info) +{ + baytrail_init_pre_device(); +} + struct chip_operations soc_intel_baytrail_ops = { CHIP_NAME("Intel BayTrail SoC") .enable_dev = enable_dev, + .init = soc_init, }; static void pci_set_subsystem(device_t dev, unsigned vendor, unsigned device) diff --git a/src/soc/intel/baytrail/ramstage.c b/src/soc/intel/baytrail/ramstage.c new file mode 100644 index 0000000000..e30fc89bc2 --- /dev/null +++ b/src/soc/intel/baytrail/ramstage.c @@ -0,0 +1,107 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Google Inc. + * + * 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/cpu.h> +#include <console/console.h> +#include <cpu/intel/microcode.h> +#include <cpu/x86/msr.h> +#include <device/device.h> +#include <device/pci_def.h> +#include <device/pci_ops.h> +#include <stdlib.h> + +#include <baytrail/pattrs.h> +#include <baytrail/lpc.h> +#include <baytrail/msr.h> +#include <baytrail/pci_devs.h> +#include <baytrail/ramstage.h> + +/* Global PATTRS */ +DEFINE_PATTRS; + +#define SHOW_PATTRS 1 + +static void detect_num_cpus(struct pattrs *attrs) +{ + int ecx = 0; + + while (1) { + struct cpuid_result leaf_b; + + leaf_b = cpuid_ext(0xb, ecx); + + /* Bay Trail doesn't have hyperthreading so just determine the + * number of cores by from level type (ecx[15:8] == * 2). */ + if ((leaf_b.ecx & 0xff00) == 0x0200) { + attrs->num_cpus = leaf_b.ebx & 0xffff; + break; + } + ecx++; + } +} + +static inline void fill_in_msr(msr_t *msr, int idx) +{ + *msr = rdmsr(idx); + if (SHOW_PATTRS) { + printk(BIOS_DEBUG, "msr(%x) = %08x%08x\n", + idx, msr->hi, msr->lo); + } +} + +static const char *stepping_str[] = { "A0", "A1", "B0", "B1", "B2", "B3" }; + +static void fill_in_pattrs(void) +{ + device_t dev; + struct pattrs *attrs = (struct pattrs *)pattrs_get(); + + attrs->cpuid = cpuid_eax(1); + dev = dev_find_slot(0, PCI_DEVFN(LPC_DEV, LPC_FUNC)); + attrs->revid = pci_read_config8(dev, REVID); + /* The revision to stepping IDs have two values per metal stepping. */ + if (attrs->revid >= RID_B_STEPPING_START) { + attrs->stepping = (attrs->revid - RID_B_STEPPING_START) / 2; + attrs->stepping += STEP_B0; + } else { + attrs->stepping = (attrs->revid - RID_A_STEPPING_START) / 2; + attrs->stepping += STEP_A0; + } + + attrs->microcode_patch = intel_microcode_find(); + attrs->address_bits = cpuid_eax(0x80000008) & 0xff; + detect_num_cpus(attrs); + + if (SHOW_PATTRS) { + printk(BIOS_DEBUG, "BYT: cpuid %08x cpus %d rid %02x step %s\n", + attrs->cpuid, attrs->num_cpus, attrs->revid, + (attrs->stepping >= ARRAY_SIZE(stepping_str)) ? "??" : + stepping_str[attrs->stepping]); + } + + fill_in_msr(&attrs->platform_id, MSR_IA32_PLATFORM_ID); + fill_in_msr(&attrs->platform_info, MSR_PLATFORM_INFO); + fill_in_msr(&attrs->iacore_ratios, MSR_IACORE_RATIOS); + fill_in_msr(&attrs->iacore_vids, MSR_IACORE_VIDS); +} + +void baytrail_init_pre_device(void) +{ + fill_in_pattrs(); +} |