mirror of
https://github.com/brain-hackers/u-boot-brain
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![Bin Meng](/assets/img/avatar_default.png)
Instead of asking each platform to provide reserve_arch(), supply it in arch/x86/cpu/cpu.c in a unified way. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
538 lines
15 KiB
C
538 lines
15 KiB
C
/*
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* Copyright (c) 2011 The Chromium OS Authors.
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* (C) Copyright 2010,2011
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* Graeme Russ, <graeme.russ@gmail.com>
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*
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* Portions from Coreboot mainboard/google/link/romstage.c
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* Copyright (C) 2007-2010 coresystems GmbH
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* Copyright (C) 2011 Google Inc.
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*
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* SPDX-License-Identifier: GPL-2.0
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*/
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#include <common.h>
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#include <errno.h>
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#include <fdtdec.h>
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#include <malloc.h>
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#include <net.h>
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#include <rtc.h>
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#include <spi.h>
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#include <spi_flash.h>
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#include <syscon.h>
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#include <asm/cpu.h>
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#include <asm/processor.h>
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#include <asm/gpio.h>
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#include <asm/global_data.h>
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#include <asm/intel_regs.h>
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#include <asm/mrccache.h>
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#include <asm/mrc_common.h>
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#include <asm/mtrr.h>
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#include <asm/pci.h>
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#include <asm/report_platform.h>
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#include <asm/arch/me.h>
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#include <asm/arch/pei_data.h>
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#include <asm/arch/pch.h>
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#include <asm/post.h>
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#include <asm/arch/sandybridge.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define CMOS_OFFSET_MRC_SEED 152
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#define CMOS_OFFSET_MRC_SEED_S3 156
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#define CMOS_OFFSET_MRC_SEED_CHK 160
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ulong board_get_usable_ram_top(ulong total_size)
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{
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return mrc_common_board_get_usable_ram_top(total_size);
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}
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void dram_init_banksize(void)
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{
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mrc_common_dram_init_banksize();
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}
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static int read_seed_from_cmos(struct pei_data *pei_data)
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{
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u16 c1, c2, checksum, seed_checksum;
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struct udevice *dev;
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int ret = 0;
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ret = uclass_get_device(UCLASS_RTC, 0, &dev);
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if (ret) {
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debug("Cannot find RTC: err=%d\n", ret);
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return -ENODEV;
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}
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/*
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* Read scrambler seeds from CMOS RAM. We don't want to store them in
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* SPI flash since they change on every boot and that would wear down
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* the flash too much. So we store these in CMOS and the large MRC
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* data in SPI flash.
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*/
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ret = rtc_read32(dev, CMOS_OFFSET_MRC_SEED, &pei_data->scrambler_seed);
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if (!ret) {
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ret = rtc_read32(dev, CMOS_OFFSET_MRC_SEED_S3,
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&pei_data->scrambler_seed_s3);
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}
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if (ret) {
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debug("Failed to read from RTC %s\n", dev->name);
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return ret;
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}
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debug("Read scrambler seed 0x%08x from CMOS 0x%02x\n",
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pei_data->scrambler_seed, CMOS_OFFSET_MRC_SEED);
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debug("Read S3 scrambler seed 0x%08x from CMOS 0x%02x\n",
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pei_data->scrambler_seed_s3, CMOS_OFFSET_MRC_SEED_S3);
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/* Compute seed checksum and compare */
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c1 = compute_ip_checksum((u8 *)&pei_data->scrambler_seed,
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sizeof(u32));
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c2 = compute_ip_checksum((u8 *)&pei_data->scrambler_seed_s3,
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sizeof(u32));
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checksum = add_ip_checksums(sizeof(u32), c1, c2);
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seed_checksum = rtc_read8(dev, CMOS_OFFSET_MRC_SEED_CHK);
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seed_checksum |= rtc_read8(dev, CMOS_OFFSET_MRC_SEED_CHK + 1) << 8;
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if (checksum != seed_checksum) {
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debug("%s: invalid seed checksum\n", __func__);
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pei_data->scrambler_seed = 0;
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pei_data->scrambler_seed_s3 = 0;
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return -EINVAL;
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}
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return 0;
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}
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static int prepare_mrc_cache(struct pei_data *pei_data)
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{
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struct mrc_data_container *mrc_cache;
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struct mrc_region entry;
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int ret;
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ret = read_seed_from_cmos(pei_data);
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if (ret)
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return ret;
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ret = mrccache_get_region(NULL, &entry);
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if (ret)
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return ret;
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mrc_cache = mrccache_find_current(&entry);
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if (!mrc_cache)
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return -ENOENT;
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pei_data->mrc_input = mrc_cache->data;
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pei_data->mrc_input_len = mrc_cache->data_size;
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debug("%s: at %p, size %x checksum %04x\n", __func__,
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pei_data->mrc_input, pei_data->mrc_input_len,
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mrc_cache->checksum);
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return 0;
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}
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static int write_seeds_to_cmos(struct pei_data *pei_data)
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{
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u16 c1, c2, checksum;
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struct udevice *dev;
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int ret = 0;
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ret = uclass_get_device(UCLASS_RTC, 0, &dev);
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if (ret) {
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debug("Cannot find RTC: err=%d\n", ret);
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return -ENODEV;
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}
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/* Save the MRC seed values to CMOS */
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rtc_write32(dev, CMOS_OFFSET_MRC_SEED, pei_data->scrambler_seed);
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debug("Save scrambler seed 0x%08x to CMOS 0x%02x\n",
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pei_data->scrambler_seed, CMOS_OFFSET_MRC_SEED);
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rtc_write32(dev, CMOS_OFFSET_MRC_SEED_S3, pei_data->scrambler_seed_s3);
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debug("Save s3 scrambler seed 0x%08x to CMOS 0x%02x\n",
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pei_data->scrambler_seed_s3, CMOS_OFFSET_MRC_SEED_S3);
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/* Save a simple checksum of the seed values */
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c1 = compute_ip_checksum((u8 *)&pei_data->scrambler_seed,
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sizeof(u32));
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c2 = compute_ip_checksum((u8 *)&pei_data->scrambler_seed_s3,
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sizeof(u32));
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checksum = add_ip_checksums(sizeof(u32), c1, c2);
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rtc_write8(dev, CMOS_OFFSET_MRC_SEED_CHK, checksum & 0xff);
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rtc_write8(dev, CMOS_OFFSET_MRC_SEED_CHK + 1, (checksum >> 8) & 0xff);
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return 0;
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}
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/* Use this hook to save our SDRAM parameters */
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int misc_init_r(void)
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{
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int ret;
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ret = mrccache_save();
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if (ret)
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printf("Unable to save MRC data: %d\n", ret);
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return 0;
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}
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static void post_system_agent_init(struct udevice *dev, struct udevice *me_dev,
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struct pei_data *pei_data)
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{
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uint16_t done;
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/*
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* Send ME init done for SandyBridge here. This is done inside the
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* SystemAgent binary on IvyBridge
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*/
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dm_pci_read_config16(dev, PCI_DEVICE_ID, &done);
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done &= BASE_REV_MASK;
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if (BASE_REV_SNB == done)
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intel_early_me_init_done(dev, me_dev, ME_INIT_STATUS_SUCCESS);
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else
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intel_me_status(me_dev);
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/* If PCIe init is skipped, set the PEG clock gating */
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if (!pei_data->pcie_init)
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setbits_le32(MCHBAR_REG(0x7010), 1);
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}
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static int recovery_mode_enabled(void)
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{
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return false;
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}
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static int copy_spd(struct udevice *dev, struct pei_data *peid)
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{
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const void *data;
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int ret;
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ret = mrc_locate_spd(dev, sizeof(peid->spd_data[0]), &data);
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if (ret)
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return ret;
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memcpy(peid->spd_data[0], data, sizeof(peid->spd_data[0]));
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return 0;
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}
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/**
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* sdram_find() - Find available memory
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*
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* This is a bit complicated since on x86 there are system memory holes all
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* over the place. We create a list of available memory blocks
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*
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* @dev: Northbridge device
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*/
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static int sdram_find(struct udevice *dev)
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{
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struct memory_info *info = &gd->arch.meminfo;
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uint32_t tseg_base, uma_size, tolud;
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uint64_t tom, me_base, touud;
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uint64_t uma_memory_base = 0;
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uint64_t uma_memory_size;
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unsigned long long tomk;
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uint16_t ggc;
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u32 val;
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/* Total Memory 2GB example:
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*
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* 00000000 0000MB-1992MB 1992MB RAM (writeback)
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* 7c800000 1992MB-2000MB 8MB TSEG (SMRR)
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* 7d000000 2000MB-2002MB 2MB GFX GTT (uncached)
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* 7d200000 2002MB-2034MB 32MB GFX UMA (uncached)
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* 7f200000 2034MB TOLUD
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* 7f800000 2040MB MEBASE
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* 7f800000 2040MB-2048MB 8MB ME UMA (uncached)
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* 80000000 2048MB TOM
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* 100000000 4096MB-4102MB 6MB RAM (writeback)
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*
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* Total Memory 4GB example:
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*
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* 00000000 0000MB-2768MB 2768MB RAM (writeback)
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* ad000000 2768MB-2776MB 8MB TSEG (SMRR)
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* ad800000 2776MB-2778MB 2MB GFX GTT (uncached)
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* ada00000 2778MB-2810MB 32MB GFX UMA (uncached)
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* afa00000 2810MB TOLUD
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* ff800000 4088MB MEBASE
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* ff800000 4088MB-4096MB 8MB ME UMA (uncached)
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* 100000000 4096MB TOM
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* 100000000 4096MB-5374MB 1278MB RAM (writeback)
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* 14fe00000 5368MB TOUUD
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*/
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/* Top of Upper Usable DRAM, including remap */
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dm_pci_read_config32(dev, TOUUD + 4, &val);
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touud = (uint64_t)val << 32;
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dm_pci_read_config32(dev, TOUUD, &val);
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touud |= val;
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/* Top of Lower Usable DRAM */
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dm_pci_read_config32(dev, TOLUD, &tolud);
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/* Top of Memory - does not account for any UMA */
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dm_pci_read_config32(dev, 0xa4, &val);
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tom = (uint64_t)val << 32;
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dm_pci_read_config32(dev, 0xa0, &val);
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tom |= val;
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debug("TOUUD %llx TOLUD %08x TOM %llx\n", touud, tolud, tom);
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/* ME UMA needs excluding if total memory <4GB */
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dm_pci_read_config32(dev, 0x74, &val);
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me_base = (uint64_t)val << 32;
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dm_pci_read_config32(dev, 0x70, &val);
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me_base |= val;
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debug("MEBASE %llx\n", me_base);
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/* TODO: Get rid of all this shifting by 10 bits */
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tomk = tolud >> 10;
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if (me_base == tolud) {
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/* ME is from MEBASE-TOM */
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uma_size = (tom - me_base) >> 10;
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/* Increment TOLUD to account for ME as RAM */
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tolud += uma_size << 10;
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/* UMA starts at old TOLUD */
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uma_memory_base = tomk * 1024ULL;
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uma_memory_size = uma_size * 1024ULL;
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debug("ME UMA base %llx size %uM\n", me_base, uma_size >> 10);
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}
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/* Graphics memory comes next */
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dm_pci_read_config16(dev, GGC, &ggc);
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if (!(ggc & 2)) {
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debug("IGD decoded, subtracting ");
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/* Graphics memory */
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uma_size = ((ggc >> 3) & 0x1f) * 32 * 1024ULL;
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debug("%uM UMA", uma_size >> 10);
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tomk -= uma_size;
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uma_memory_base = tomk * 1024ULL;
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uma_memory_size += uma_size * 1024ULL;
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/* GTT Graphics Stolen Memory Size (GGMS) */
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uma_size = ((ggc >> 8) & 0x3) * 1024ULL;
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tomk -= uma_size;
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uma_memory_base = tomk * 1024ULL;
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uma_memory_size += uma_size * 1024ULL;
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debug(" and %uM GTT\n", uma_size >> 10);
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}
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/* Calculate TSEG size from its base which must be below GTT */
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dm_pci_read_config32(dev, 0xb8, &tseg_base);
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uma_size = (uma_memory_base - tseg_base) >> 10;
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tomk -= uma_size;
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uma_memory_base = tomk * 1024ULL;
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uma_memory_size += uma_size * 1024ULL;
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debug("TSEG base 0x%08x size %uM\n", tseg_base, uma_size >> 10);
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debug("Available memory below 4GB: %lluM\n", tomk >> 10);
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/* Report the memory regions */
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mrc_add_memory_area(info, 1 << 20, 2 << 28);
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mrc_add_memory_area(info, (2 << 28) + (2 << 20), 4 << 28);
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mrc_add_memory_area(info, (4 << 28) + (2 << 20), tseg_base);
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mrc_add_memory_area(info, 1ULL << 32, touud);
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/* Add MTRRs for memory */
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mtrr_add_request(MTRR_TYPE_WRBACK, 0, 2ULL << 30);
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mtrr_add_request(MTRR_TYPE_WRBACK, 2ULL << 30, 512 << 20);
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mtrr_add_request(MTRR_TYPE_WRBACK, 0xaULL << 28, 256 << 20);
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mtrr_add_request(MTRR_TYPE_UNCACHEABLE, tseg_base, 16 << 20);
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mtrr_add_request(MTRR_TYPE_UNCACHEABLE, tseg_base + (16 << 20),
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32 << 20);
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/*
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* If >= 4GB installed then memory from TOLUD to 4GB
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* is remapped above TOM, TOUUD will account for both
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*/
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if (touud > (1ULL << 32ULL)) {
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debug("Available memory above 4GB: %lluM\n",
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(touud >> 20) - 4096);
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}
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return 0;
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}
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static void rcba_config(void)
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{
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/*
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* GFX INTA -> PIRQA (MSI)
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* D28IP_P3IP WLAN INTA -> PIRQB
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* D29IP_E1P EHCI1 INTA -> PIRQD
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* D26IP_E2P EHCI2 INTA -> PIRQF
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* D31IP_SIP SATA INTA -> PIRQF (MSI)
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* D31IP_SMIP SMBUS INTB -> PIRQH
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* D31IP_TTIP THRT INTC -> PIRQA
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* D27IP_ZIP HDA INTA -> PIRQA (MSI)
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*
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* TRACKPAD -> PIRQE (Edge Triggered)
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* TOUCHSCREEN -> PIRQG (Edge Triggered)
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*/
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/* Device interrupt pin register (board specific) */
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writel((INTC << D31IP_TTIP) | (NOINT << D31IP_SIP2) |
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(INTB << D31IP_SMIP) | (INTA << D31IP_SIP), RCB_REG(D31IP));
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writel(NOINT << D30IP_PIP, RCB_REG(D30IP));
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writel(INTA << D29IP_E1P, RCB_REG(D29IP));
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writel(INTA << D28IP_P3IP, RCB_REG(D28IP));
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writel(INTA << D27IP_ZIP, RCB_REG(D27IP));
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writel(INTA << D26IP_E2P, RCB_REG(D26IP));
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writel(NOINT << D25IP_LIP, RCB_REG(D25IP));
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writel(NOINT << D22IP_MEI1IP, RCB_REG(D22IP));
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/* Device interrupt route registers */
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writel(DIR_ROUTE(PIRQB, PIRQH, PIRQA, PIRQC), RCB_REG(D31IR));
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writel(DIR_ROUTE(PIRQD, PIRQE, PIRQF, PIRQG), RCB_REG(D29IR));
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writel(DIR_ROUTE(PIRQB, PIRQC, PIRQD, PIRQE), RCB_REG(D28IR));
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writel(DIR_ROUTE(PIRQA, PIRQH, PIRQA, PIRQB), RCB_REG(D27IR));
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writel(DIR_ROUTE(PIRQF, PIRQE, PIRQG, PIRQH), RCB_REG(D26IR));
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writel(DIR_ROUTE(PIRQA, PIRQB, PIRQC, PIRQD), RCB_REG(D25IR));
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writel(DIR_ROUTE(PIRQA, PIRQB, PIRQC, PIRQD), RCB_REG(D22IR));
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/* Enable IOAPIC (generic) */
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writew(0x0100, RCB_REG(OIC));
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/* PCH BWG says to read back the IOAPIC enable register */
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(void)readw(RCB_REG(OIC));
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/* Disable unused devices (board specific) */
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setbits_le32(RCB_REG(FD), PCH_DISABLE_ALWAYS);
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}
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int dram_init(void)
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{
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struct pei_data _pei_data __aligned(8) = {
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.pei_version = PEI_VERSION,
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.mchbar = MCH_BASE_ADDRESS,
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.dmibar = DEFAULT_DMIBAR,
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.epbar = DEFAULT_EPBAR,
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.pciexbar = CONFIG_PCIE_ECAM_BASE,
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.smbusbar = SMBUS_IO_BASE,
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.wdbbar = 0x4000000,
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.wdbsize = 0x1000,
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.hpet_address = CONFIG_HPET_ADDRESS,
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.rcba = DEFAULT_RCBABASE,
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.pmbase = DEFAULT_PMBASE,
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.gpiobase = DEFAULT_GPIOBASE,
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.thermalbase = 0xfed08000,
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.system_type = 0, /* 0 Mobile, 1 Desktop/Server */
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.tseg_size = CONFIG_SMM_TSEG_SIZE,
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.ts_addresses = { 0x00, 0x00, 0x00, 0x00 },
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.ec_present = 1,
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.ddr3lv_support = 1,
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/*
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* 0 = leave channel enabled
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* 1 = disable dimm 0 on channel
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* 2 = disable dimm 1 on channel
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* 3 = disable dimm 0+1 on channel
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*/
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.dimm_channel0_disabled = 2,
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.dimm_channel1_disabled = 2,
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.max_ddr3_freq = 1600,
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.usb_port_config = {
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/*
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* Empty and onboard Ports 0-7, set to un-used pin
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* OC3
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*/
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{ 0, 3, 0x0000 }, /* P0= Empty */
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{ 1, 0, 0x0040 }, /* P1= Left USB 1 (OC0) */
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{ 1, 1, 0x0040 }, /* P2= Left USB 2 (OC1) */
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{ 1, 3, 0x0040 }, /* P3= SDCARD (no OC) */
|
|
{ 0, 3, 0x0000 }, /* P4= Empty */
|
|
{ 1, 3, 0x0040 }, /* P5= WWAN (no OC) */
|
|
{ 0, 3, 0x0000 }, /* P6= Empty */
|
|
{ 0, 3, 0x0000 }, /* P7= Empty */
|
|
/*
|
|
* Empty and onboard Ports 8-13, set to un-used pin
|
|
* OC4
|
|
*/
|
|
{ 1, 4, 0x0040 }, /* P8= Camera (no OC) */
|
|
{ 1, 4, 0x0040 }, /* P9= Bluetooth (no OC) */
|
|
{ 0, 4, 0x0000 }, /* P10= Empty */
|
|
{ 0, 4, 0x0000 }, /* P11= Empty */
|
|
{ 0, 4, 0x0000 }, /* P12= Empty */
|
|
{ 0, 4, 0x0000 }, /* P13= Empty */
|
|
},
|
|
};
|
|
struct pei_data *pei_data = &_pei_data;
|
|
struct udevice *dev, *me_dev;
|
|
int ret;
|
|
|
|
ret = uclass_first_device_err(UCLASS_NORTHBRIDGE, &dev);
|
|
if (ret)
|
|
return ret;
|
|
ret = syscon_get_by_driver_data(X86_SYSCON_ME, &me_dev);
|
|
if (ret)
|
|
return ret;
|
|
ret = copy_spd(dev, pei_data);
|
|
if (ret)
|
|
return ret;
|
|
pei_data->boot_mode = gd->arch.pei_boot_mode;
|
|
debug("Boot mode %d\n", gd->arch.pei_boot_mode);
|
|
debug("mrc_input %p\n", pei_data->mrc_input);
|
|
|
|
/*
|
|
* Do not pass MRC data in for recovery mode boot,
|
|
* Always pass it in for S3 resume.
|
|
*/
|
|
if (!recovery_mode_enabled() ||
|
|
pei_data->boot_mode == PEI_BOOT_RESUME) {
|
|
ret = prepare_mrc_cache(pei_data);
|
|
if (ret)
|
|
debug("prepare_mrc_cache failed: %d\n", ret);
|
|
}
|
|
|
|
/* If MRC data is not found we cannot continue S3 resume. */
|
|
if (pei_data->boot_mode == PEI_BOOT_RESUME && !pei_data->mrc_input) {
|
|
debug("Giving up in sdram_initialize: No MRC data\n");
|
|
reset_cpu(0);
|
|
}
|
|
|
|
/* Pass console handler in pei_data */
|
|
pei_data->tx_byte = sdram_console_tx_byte;
|
|
|
|
/* Wait for ME to be ready */
|
|
ret = intel_early_me_init(me_dev);
|
|
if (ret)
|
|
return ret;
|
|
ret = intel_early_me_uma_size(me_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = mrc_common_init(dev, pei_data, false);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = sdram_find(dev);
|
|
if (ret)
|
|
return ret;
|
|
gd->ram_size = gd->arch.meminfo.total_32bit_memory;
|
|
|
|
debug("MRC output data length %#x at %p\n", pei_data->mrc_output_len,
|
|
pei_data->mrc_output);
|
|
|
|
post_system_agent_init(dev, me_dev, pei_data);
|
|
report_memory_config();
|
|
|
|
/* S3 resume: don't save scrambler seed or MRC data */
|
|
if (pei_data->boot_mode != PEI_BOOT_RESUME) {
|
|
/*
|
|
* This will be copied to SDRAM in reserve_arch(), then written
|
|
* to SPI flash in mrccache_save()
|
|
*/
|
|
gd->arch.mrc_output = (char *)pei_data->mrc_output;
|
|
gd->arch.mrc_output_len = pei_data->mrc_output_len;
|
|
ret = write_seeds_to_cmos(pei_data);
|
|
if (ret)
|
|
debug("Failed to write seeds to CMOS: %d\n", ret);
|
|
}
|
|
|
|
writew(0xCAFE, MCHBAR_REG(SSKPD));
|
|
if (ret)
|
|
return ret;
|
|
|
|
rcba_config();
|
|
|
|
return 0;
|
|
}
|