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/*
* This file is part of the coreboot project.
*
* Copyright 2018 Facebook, Inc.
* Copyright 2003-2017 Cavium Inc. <support@cavium.com>
*
* 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.
*
* Derived from Cavium's BSD-3 Clause OCTEONTX-SDK-6.2.0.
*/
#include <console/console.h>
#include <soc/sdram.h>
#include <libbdk-arch/bdk-warn.h>
#include <libbdk-arch/bdk-csrs-rst.h>
#include <libbdk-boot/bdk-watchdog.h>
#include <libbdk-dram/bdk-dram-config.h>
#include <libbdk-dram/bdk-dram-test.h>
#include <libbdk-hal/bdk-config.h>
#include <libbdk-hal/bdk-utils.h>
#include <libbdk-hal/bdk-l2c.h>
#include <libdram/libdram-config.h>
size_t sdram_size_mb(void)
{
return bdk_dram_get_size_mbytes(0);
}
/* based on bdk_boot_dram() */
void sdram_init(void)
{
printk(BIOS_DEBUG, "Initializing DRAM\n");
/**
* FIXME: second arg is actually a desired frequency if set (the
* function usually obtains frequency via the config). That might
* be useful if FDT or u-boot env is too cumbersome.
*/
int mbytes = bdk_dram_config(0, 0);
if (mbytes < 0) {
bdk_error("N0: Failed DRAM init\n");
die("DRAM INIT FAILED !\n");
}
/* Poke the watchdog */
bdk_watchdog_poke();
/* Report DRAM status */
printf("N0: DRAM:%s\n", bdk_dram_get_info_string(0));
/* See if we should test this node's DRAM during boot */
int test_dram = bdk_config_get_int(BDK_CONFIG_DRAM_BOOT_TEST, 0);
if (test_dram) {
/* Run the address test to make sure DRAM works */
if (bdk_dram_test(13, 0, 0x10000000000ull, BDK_DRAM_TEST_NO_STATS | (1<<0))) {
/**
* FIXME(dhendrix): This should be handled by mainboard code since we
* don't necessarily have a BMC to report to. Also, we need to figure out
* if we need to keep going as to avoid getting into a boot loop.
*/
// bdk_boot_status(BDK_BOOT_STATUS_REQUEST_POWER_CYCLE);
printk(BIOS_ERR, "%s: Failed DRAM test.\n", __func__);
}
bdk_watchdog_poke();
/* Put other node core back in reset */
if (0 != bdk_numa_master())
BDK_CSR_WRITE(0, BDK_RST_PP_RESET, -1);
/* Clear DRAM */
uint64_t skip = 0;
if (0 == bdk_numa_master())
skip = bdk_dram_get_top_of_bdk();
void *base = bdk_phys_to_ptr(bdk_numa_get_address(0, skip));
bdk_zero_memory(base, ((uint64_t)mbytes << 20) - skip);
bdk_watchdog_poke();
}
/* Unlock L2 now that DRAM works */
if (0 == bdk_numa_master()) {
uint64_t l2_size = bdk_l2c_get_cache_size_bytes(0);
BDK_TRACE(INIT, "Unlocking L2\n");
bdk_l2c_unlock_mem_region(0, 0, l2_size);
bdk_watchdog_poke();
}
printk(BIOS_INFO, "SDRAM initialization finished.\n");
}
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