diff options
Diffstat (limited to 'src/cpu/via/nano/nano_init.c')
| -rw-r--r-- | src/cpu/via/nano/nano_init.c | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/src/cpu/via/nano/nano_init.c b/src/cpu/via/nano/nano_init.c deleted file mode 100644 index 61d82f12f2..0000000000 --- a/src/cpu/via/nano/nano_init.c +++ /dev/null @@ -1,196 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * 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, either version 2 of the License, or - * (at your option) any later version. - * - * 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. - */ - -#include "update_ucode.h" -#include <console/console.h> -#include <device/device.h> -#include <cpu/cpu.h> -#include <cpu/x86/mtrr.h> -#include <cpu/x86/msr.h> -#include <cpu/x86/lapic.h> -#include <cpu/x86/cache.h> -#include <delay.h> - -#define MODEL_NANO 0x2 -#define MODEL_NANO_3000_B0 0x8 -#define MODEL_NANO_3000_B2 0xa - -#define NANO_MYSTERIOUS_MSR 0x120e - -static void nano_finish_fid_vid_transition(void) -{ - - msr_t msr; - /* Wait until the power transition ends */ - int cnt = 0; - do { - udelay(16); - msr = rdmsr(IA32_PERF_STATUS); - cnt++; - if (cnt > 128) { - printk(BIOS_WARNING, - "Error while updating multiplier and voltage\n"); - break; - } - } while (msr.lo & ((1 << 16) | (1 << 17))); - - /* Print the new FID and Voltage */ - u8 cur_vid = (msr.lo >> 0) & 0xff; - u8 cur_fid = (msr.lo >> 8) & 0xff; - printk(BIOS_INFO, "New CPU multiplier: %dx\n", cur_fid); - printk(BIOS_INFO, "New Voltage ID : %dx\n", cur_vid); -} - -static void nano_set_max_fid_vid(void) -{ - msr_t msr; - /* Get voltage and frequency info */ - msr = rdmsr(IA32_PERF_STATUS); - u8 min_fid = (msr.hi >> 24); - u8 max_fid = (msr.hi >> 8) & 0xff; - u8 min_vid = (msr.hi >> 16) & 0xff; - u8 max_vid = (msr.hi >> 0) & 0xff; - u8 cur_vid = (msr.lo >> 0) & 0xff; - u8 cur_fid = (msr.lo >> 8) & 0xff; - - printk(BIOS_INFO, "CPU multiplier: %dx (min %dx; max %dx)\n", - cur_fid, min_fid, max_fid); - printk(BIOS_INFO, "Voltage ID : %dx (min %dx; max %dx)\n", - cur_vid, min_vid, max_vid); - - if ((cur_fid != max_fid) || (cur_vid != max_vid)) { - /* Set highest frequency and VID */ - msr.lo = msr.hi; - msr.hi = 0; - wrmsr(IA32_PERF_CTL, msr); - /* Wait for the transition to complete, otherwise, the CPU - * might reset itself repeatedly */ - nano_finish_fid_vid_transition(); - } - /* As a side note, if we didn't update the microcode by this point, the - * second PLL will not lock correctly. The clock will still be provided - * by the first PLL, and execution will continue normally, ___until___ - * the CPU switches PLL. Once that happens we will no longer have a - * working clock source, and the CPU will hang - * Moral of the story: update the microcode, or don't change FID - * This check is handled before calling nano_power() */ -} - -static void nano_power(void) -{ - msr_t msr; - /* Enable Powersaver */ - msr = rdmsr(IA32_MISC_ENABLE); - msr.lo |= (1 << 16); - wrmsr(IA32_MISC_ENABLE, msr); - - /* Enable 6 bit or 7-bit VRM support - * This MSR is not documented by VIA docs, other than setting these - * bits */ - msr = rdmsr(NANO_MYSTERIOUS_MSR); - msr.lo |= ((1 << 7) | (1 << 4)); - /* FIXME: Do we have a 6-bit or 7-bit VRM? - * set bit [5] for 7-bit, or don't set it for 6 bit VRM - * This will probably require a Kconfig option - * My board has a 7-bit VRM, so I can't test the 6-bit VRM stuff */ - msr.lo |= (1 << 5); - wrmsr(NANO_MYSTERIOUS_MSR, msr); - - /* Set the maximum frequency and voltage */ - nano_set_max_fid_vid(); - - /* Enable TM3 */ - msr = rdmsr(IA32_MISC_ENABLE); - msr.lo |= ((1 << 3) | (1 << 13)); - wrmsr(IA32_MISC_ENABLE, msr); - - u8 stepping = (cpuid_eax(0x1)) & 0xf; - if (stepping >= MODEL_NANO_3000_B0) { - /* Hello Nano 3000. The Terminator needs a CPU upgrade */ - /* Enable C1e, C2e, C3e, and C4e states */ - msr = rdmsr(IA32_MISC_ENABLE); - msr.lo |= ((1 << 25) | (1 << 26) | (1 << 31)); /* C1e, C2e, C3e */ - msr.hi |= (1 << 0); /* C4e */ - wrmsr(IA32_MISC_ENABLE, msr); - } - - /* Lock on Powersaver */ - msr = rdmsr(IA32_MISC_ENABLE); - msr.lo |= (1 << 20); - wrmsr(IA32_MISC_ENABLE, msr); -} - -static void nano_init(struct device *dev) -{ - struct cpuinfo_x86 c; - - get_fms(&c, dev->device); - - /* We didn't test this on the Nano 1000/2000 series, so warn the user */ - if (c.x86_mask < MODEL_NANO_3000_B0) { - printk(BIOS_EMERG, "WARNING: This CPU has not been tested. " - "Please report any issues encountered.\n"); - } - switch (c.x86_mask) { - case MODEL_NANO: - printk(BIOS_INFO, "VIA Nano"); - break; - case MODEL_NANO_3000_B0: - printk(BIOS_INFO, "VIA Nano 3000 rev B0"); - break; - case MODEL_NANO_3000_B2: - printk(BIOS_INFO, "VIA Nano 3000 rev B2"); - break; - default: - printk(BIOS_EMERG, "Stepping not recognized: %x\n", c.x86_mask); - } - printk(BIOS_INFO, "\n"); - - /* We only read microcode from CBFS. If we don't have any microcode in - * CBFS, we'll just get back with 0 updates. User choice FTW. */ - unsigned int n_updates = nano_update_ucode(); - - if (n_updates != 0){ - nano_power(); - } else { - /* Changing the frequency or voltage without first updating the - * microcode will hang the CPU, so just don't do it */ - printk(BIOS_EMERG, "WARNING: CPU Microcode not updated.\n" - " Will not change frequency, as this may hang the CPU.\n"); - } - - /* Turn on cache */ - x86_enable_cache(); - /* Set up Memory Type Range Registers */ - x86_setup_mtrrs(); - x86_mtrr_check(); - /* Enable the local CPU APICs */ - setup_lapic(); -} - -static struct device_operations cpu_dev_ops = { - .init = nano_init, -}; - -static const struct cpu_device_id cpu_table[] = { - {X86_VENDOR_CENTAUR, 0x06f2}, // VIA NANO 1000/2000 Series - {X86_VENDOR_CENTAUR, 0x06f8}, // VIA NANO 3000 rev B0 - {X86_VENDOR_CENTAUR, 0x06fa}, // VIA NANO 3000 rev B2 - {0, 0}, -}; - -static const struct cpu_driver driver __cpu_driver = { - .ops = &cpu_dev_ops, - .id_table = cpu_table, -}; |