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/*
* This file is part of the coreboot project.
*
* Copyright 2014 Google Inc.
* Copyright (c) 2014, The Linux Foundation. All rights reserved.
*
* 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.
*/
#include <arch/cache.h>
#include <device/mmio.h>
#include <cbfs.h>
#include <console/console.h>
#include <string.h>
#include <timer.h>
#include <soc/iomap.h>
#include <soc/soc_services.h>
#include "mbn_header.h"
static void *load_ipq_blob(const char *file_name)
{
struct mbn_header *blob_mbn;
void *blob_dest;
size_t blob_size;
blob_mbn = cbfs_boot_map_with_leak(file_name, CBFS_TYPE_RAW,
&blob_size);
if (!blob_mbn)
return NULL;
/* some sanity checks on the headers */
if ((blob_mbn->mbn_version != 3) ||
(blob_mbn->mbn_total_size > blob_size))
return NULL;
blob_dest = (void *) blob_mbn->mbn_destination;
if (blob_mbn->mbn_destination) {
/* Copy the blob to the appropriate memory location. */
memcpy(blob_dest, blob_mbn + 1, blob_mbn->mbn_total_size);
cache_sync_instructions();
return blob_dest;
}
/*
* The blob did not have to be relocated, return its address in CBFS
* cache.
*/
return blob_mbn + 1;
}
#define DDR_VERSION() ((const char *)0x2a03f600)
#define MAX_DDR_VERSION_SIZE 48
int initialize_dram(void)
{
void *cdt;
int (*ddr_init_function)(void *cdt_header);
cdt = load_ipq_blob("cdt.mbn");
ddr_init_function = load_ipq_blob("ddr.mbn");
if (!cdt || !ddr_init_function) {
printk(BIOS_ERR, "cdt: %p, ddr_init_function: %p\n",
cdt, ddr_init_function);
die("could not find DDR initialization blobs\n");
}
if (ddr_init_function(cdt) < 0)
die("Fail to Initialize DDR\n");
/*
* Once DDR initializer finished, its version can be found at a fixed
* address in SRAM.
*/
printk(BIOS_INFO, "DDR version %.*s initialized\n",
MAX_DDR_VERSION_SIZE, DDR_VERSION());
return 0;
}
void start_tzbsp(void)
{
void *tzbsp = load_ipq_blob("tz.mbn");
if (!tzbsp)
die("could not find or map TZBSP\n");
printk(BIOS_INFO, "Starting TZBSP\n");
tz_init_wrapper(0, 0, tzbsp);
}
/* RPM version is encoded in a 32 bit word at the fixed address */
#define RPM_VERSION() (*((u32 *)(0x00108008)))
void start_rpm(void)
{
u32 load_addr;
u32 ready_mask = 1 << 10;
u32 rpm_version;
struct stopwatch sw;
if (read32(RPM_SIGNAL_COOKIE) == RPM_FW_MAGIC_NUM) {
printk(BIOS_INFO, "RPM appears to have already started\n");
return;
}
load_addr = (u32) load_ipq_blob("rpm.mbn");
if (!load_addr)
die("could not find or map RPM code\n");
printk(BIOS_INFO, "Starting RPM\n");
/* Clear 'ready' indication. */
/*
* RPM_INT_ACK is clear-on-write type register,
* read-modify-write is not recommended.
*/
write32(RPM_INT_ACK, ready_mask);
/* Set RPM entry address */
write32(RPM_SIGNAL_ENTRY, load_addr);
/* Set cookie */
write32(RPM_SIGNAL_COOKIE, RPM_FW_MAGIC_NUM);
/* Wait for RPM start indication, up to 100ms. */
stopwatch_init_usecs_expire(&sw, 100000);
while (!(read32(RPM_INT) & ready_mask))
if (stopwatch_expired(&sw))
die("RPM Initialization failed\n");
/* Acknowledge RPM initialization */
write32(RPM_INT_ACK, ready_mask);
/* Report RPM version, it is encoded in a 32 bit value. */
rpm_version = RPM_VERSION();
printk(BIOS_INFO, "Started RPM version %d.%d.%d\n",
rpm_version >> 24,
(rpm_version >> 16) & 0xff,
rpm_version & 0xffff);
}
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