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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2019 Google LLC
* Written by Simon Glass <sjg@chromium.org>
*/
#include <common.h>
#include <handoff.h>
#include <init.h>
#include <log.h>
#include <spl.h>
#include <acpi/acpi_s3.h>
#include <asm/arch/cpu.h>
#include <asm/fsp/fsp_support.h>
#include <asm/fsp2/fsp_api.h>
#include <asm/fsp2/fsp_internal.h>
#include <linux/sizes.h>
int dram_init(void)
{
int ret;
if (!ll_boot_init()) {
/* Use a small and safe amount of 1GB */
gd->ram_size = SZ_1G;
return 0;
}
if (spl_phase() == PHASE_SPL) {
#ifdef CONFIG_HAVE_ACPI_RESUME
bool s3wake = gd->arch.prev_sleep_state == ACPI_S3;
#else
bool s3wake = false;
#endif
ret = fsp_memory_init(s3wake,
IS_ENABLED(CONFIG_APL_BOOT_FROM_FAST_SPI_FLASH));
if (ret) {
debug("Memory init failed (err=%x)\n", ret);
return ret;
}
/* The FSP has already set up DRAM, so grab the info we need */
ret = fsp_scan_for_ram_size();
if (ret)
return ret;
#ifdef CONFIG_ENABLE_MRC_CACHE
gd->arch.mrc[MRC_TYPE_NORMAL].buf =
fsp_get_nvs_data(gd->arch.hob_list,
&gd->arch.mrc[MRC_TYPE_NORMAL].len);
gd->arch.mrc[MRC_TYPE_VAR].buf =
fsp_get_var_nvs_data(gd->arch.hob_list,
&gd->arch.mrc[MRC_TYPE_VAR].len);
log_debug("normal %x, var %x\n",
gd->arch.mrc[MRC_TYPE_NORMAL].len,
gd->arch.mrc[MRC_TYPE_VAR].len);
#endif
} else {
#if CONFIG_IS_ENABLED(HANDOFF)
struct spl_handoff *ho = gd->spl_handoff;
if (!ho) {
debug("No SPL handoff found\n");
return -ESTRPIPE;
}
gd->ram_size = ho->ram_size;
handoff_load_dram_banks(ho);
#endif
ret = arch_fsps_preinit();
if (ret)
return log_msg_ret("fsp_s_preinit", ret);
}
return 0;
}
ulong board_get_usable_ram_top(ulong total_size)
{
if (!ll_boot_init())
return gd->ram_size;
#if CONFIG_IS_ENABLED(HANDOFF)
struct spl_handoff *ho = gd->spl_handoff;
return ho->arch.usable_ram_top;
#endif
return gd->ram_top;
}
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