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https://github.com/brain-hackers/u-boot-brain
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cf87d3b503
Add support for some important configuration options and FSP memory init. The memory init uses swizzle tables from the device tree. Support for the FSP_S binary is also included. Bootstage timing is used for both FSP_M and FSP_S and memory-mapped SPI reads. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2019 Google LLC
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <common.h>
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#include <acpi_s3.h>
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#include <handoff.h>
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#include <spl.h>
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#include <asm/arch/cpu.h>
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#include <asm/fsp/fsp_support.h>
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#include <asm/fsp2/fsp_api.h>
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#include <asm/fsp2/fsp_internal.h>
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int dram_init(void)
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{
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int ret;
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if (spl_phase() == PHASE_SPL) {
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#ifdef CONFIG_HAVE_ACPI_RESUME
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bool s3wake = gd->arch.prev_sleep_state == ACPI_S3;
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#else
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bool s3wake = false;
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#endif
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ret = fsp_memory_init(s3wake,
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IS_ENABLED(CONFIG_APL_BOOT_FROM_FAST_SPI_FLASH));
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if (ret) {
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debug("Memory init failed (err=%x)\n", ret);
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return ret;
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}
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/* The FSP has already set up DRAM, so grab the info we need */
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ret = fsp_scan_for_ram_size();
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if (ret)
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return ret;
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#ifdef CONFIG_ENABLE_MRC_CACHE
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gd->arch.mrc[MRC_TYPE_NORMAL].buf =
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fsp_get_nvs_data(gd->arch.hob_list,
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&gd->arch.mrc[MRC_TYPE_NORMAL].len);
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gd->arch.mrc[MRC_TYPE_VAR].buf =
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fsp_get_var_nvs_data(gd->arch.hob_list,
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&gd->arch.mrc[MRC_TYPE_VAR].len);
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log_debug("normal %x, var %x\n",
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gd->arch.mrc[MRC_TYPE_NORMAL].len,
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gd->arch.mrc[MRC_TYPE_VAR].len);
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#endif
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} else {
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#if CONFIG_IS_ENABLED(HANDOFF)
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struct spl_handoff *ho = gd->spl_handoff;
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if (!ho) {
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debug("No SPL handoff found\n");
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return -ESTRPIPE;
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}
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gd->ram_size = ho->ram_size;
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handoff_load_dram_banks(ho);
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#endif
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ret = arch_fsps_preinit();
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if (ret)
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return log_msg_ret("fsp_s_preinit", ret);
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}
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return 0;
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}
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ulong board_get_usable_ram_top(ulong total_size)
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{
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#if CONFIG_IS_ENABLED(HANDOFF)
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struct spl_handoff *ho = gd->spl_handoff;
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return ho->arch.usable_ram_top;
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#endif
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return gd->ram_top;
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}
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