blob: 86a44556a1a641dd6eba437b78da32ae0fdfc241 [file] [log] [blame]
/*
* Copyright (c) 2019-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <common/debug.h>
#include <common/runtime_svc.h>
#include <lib/mmio.h>
#include <tools_share/uuid.h>
#include "socfpga_mailbox.h"
#include "socfpga_reset_manager.h"
#include "socfpga_sip_svc.h"
/* Total buffer the driver can hold */
#define FPGA_CONFIG_BUFFER_SIZE 4
static int current_block, current_buffer;
static int read_block, max_blocks, is_partial_reconfig;
static uint32_t send_id, rcv_id;
static uint32_t bytes_per_block, blocks_submitted;
/* SiP Service UUID */
DEFINE_SVC_UUID2(intl_svc_uid,
0xa85273b0, 0xe85a, 0x4862, 0xa6, 0x2a,
0xfa, 0x88, 0x88, 0x17, 0x68, 0x81);
static uint64_t socfpga_sip_handler(uint32_t smc_fid,
uint64_t x1,
uint64_t x2,
uint64_t x3,
uint64_t x4,
void *cookie,
void *handle,
uint64_t flags)
{
ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid);
SMC_RET1(handle, SMC_UNK);
}
struct fpga_config_info fpga_config_buffers[FPGA_CONFIG_BUFFER_SIZE];
static int intel_fpga_sdm_write_buffer(struct fpga_config_info *buffer)
{
uint32_t args[3];
while (max_blocks > 0 && buffer->size > buffer->size_written) {
args[0] = (1<<8);
args[1] = buffer->addr + buffer->size_written;
if (buffer->size - buffer->size_written <= bytes_per_block) {
args[2] = buffer->size - buffer->size_written;
current_buffer++;
current_buffer %= FPGA_CONFIG_BUFFER_SIZE;
} else
args[2] = bytes_per_block;
buffer->size_written += args[2];
mailbox_send_cmd_async(&send_id, MBOX_RECONFIG_DATA, args,
3U, CMD_INDIRECT);
buffer->subblocks_sent++;
max_blocks--;
}
return !max_blocks;
}
static int intel_fpga_sdm_write_all(void)
{
for (int i = 0; i < FPGA_CONFIG_BUFFER_SIZE; i++)
if (intel_fpga_sdm_write_buffer(
&fpga_config_buffers[current_buffer]))
break;
return 0;
}
static uint32_t intel_mailbox_fpga_config_isdone(uint32_t query_type)
{
uint32_t ret;
if (query_type == 1)
ret = intel_mailbox_get_config_status(MBOX_CONFIG_STATUS);
else
ret = intel_mailbox_get_config_status(MBOX_RECONFIG_STATUS);
if (ret) {
if (ret == MBOX_CFGSTAT_STATE_CONFIG)
return INTEL_SIP_SMC_STATUS_BUSY;
else
return INTEL_SIP_SMC_STATUS_ERROR;
}
if (query_type != 1) {
/* full reconfiguration */
if (!is_partial_reconfig)
socfpga_bridges_enable(); /* Enable bridge */
}
return INTEL_SIP_SMC_STATUS_OK;
}
static int mark_last_buffer_xfer_completed(uint32_t *buffer_addr_completed)
{
int i;
for (i = 0; i < FPGA_CONFIG_BUFFER_SIZE; i++) {
if (fpga_config_buffers[i].block_number == current_block) {
fpga_config_buffers[i].subblocks_sent--;
if (fpga_config_buffers[i].subblocks_sent == 0
&& fpga_config_buffers[i].size <=
fpga_config_buffers[i].size_written) {
fpga_config_buffers[i].write_requested = 0;
current_block++;
*buffer_addr_completed =
fpga_config_buffers[i].addr;
return 0;
}
}
}
return -1;
}
static int intel_fpga_config_completed_write(uint32_t *completed_addr,
uint32_t *count, uint32_t *job_id)
{
uint32_t status = INTEL_SIP_SMC_STATUS_OK;
*count = 0;
int resp_len = 0;
uint32_t resp[5];
int all_completed = 1;
while (*count < 3) {
resp_len = mailbox_read_response(job_id,
resp, ARRAY_SIZE(resp));
if (resp_len < 0)
break;
max_blocks++;
if (mark_last_buffer_xfer_completed(
&completed_addr[*count]) == 0)
*count = *count + 1;
else
break;
}
if (*count <= 0) {
if (resp_len != MBOX_NO_RESPONSE &&
resp_len != MBOX_TIMEOUT && resp_len != 0) {
mailbox_clear_response();
return INTEL_SIP_SMC_STATUS_ERROR;
}
*count = 0;
}
intel_fpga_sdm_write_all();
if (*count > 0)
status = INTEL_SIP_SMC_STATUS_OK;
else if (*count == 0)
status = INTEL_SIP_SMC_STATUS_BUSY;
for (int i = 0; i < FPGA_CONFIG_BUFFER_SIZE; i++) {
if (fpga_config_buffers[i].write_requested != 0) {
all_completed = 0;
break;
}
}
if (all_completed == 1)
return INTEL_SIP_SMC_STATUS_OK;
return status;
}
static int intel_fpga_config_start(uint32_t config_type)
{
uint32_t response[3];
int status = 0;
is_partial_reconfig = config_type;
mailbox_clear_response();
mailbox_send_cmd(1U, MBOX_CMD_CANCEL, NULL, 0U, CMD_CASUAL, NULL, 0U);
status = mailbox_send_cmd(1U, MBOX_RECONFIG, NULL, 0U, CMD_CASUAL,
response, ARRAY_SIZE(response));
if (status < 0)
return status;
max_blocks = response[0];
bytes_per_block = response[1];
for (int i = 0; i < FPGA_CONFIG_BUFFER_SIZE; i++) {
fpga_config_buffers[i].size = 0;
fpga_config_buffers[i].size_written = 0;
fpga_config_buffers[i].addr = 0;
fpga_config_buffers[i].write_requested = 0;
fpga_config_buffers[i].block_number = 0;
fpga_config_buffers[i].subblocks_sent = 0;
}
blocks_submitted = 0;
current_block = 0;
read_block = 0;
current_buffer = 0;
/* full reconfiguration */
if (!is_partial_reconfig) {
/* Disable bridge */
socfpga_bridges_disable();
}
return 0;
}
static bool is_fpga_config_buffer_full(void)
{
for (int i = 0; i < FPGA_CONFIG_BUFFER_SIZE; i++)
if (!fpga_config_buffers[i].write_requested)
return false;
return true;
}
bool is_address_in_ddr_range(uint64_t addr, uint64_t size)
{
if (size > (UINT64_MAX - addr))
return false;
if (addr < BL31_LIMIT)
return false;
if (addr + size > DRAM_BASE + DRAM_SIZE)
return false;
return true;
}
static uint32_t intel_fpga_config_write(uint64_t mem, uint64_t size)
{
int i;
intel_fpga_sdm_write_all();
if (!is_address_in_ddr_range(mem, size) ||
is_fpga_config_buffer_full())
return INTEL_SIP_SMC_STATUS_REJECTED;
for (i = 0; i < FPGA_CONFIG_BUFFER_SIZE; i++) {
int j = (i + current_buffer) % FPGA_CONFIG_BUFFER_SIZE;
if (!fpga_config_buffers[j].write_requested) {
fpga_config_buffers[j].addr = mem;
fpga_config_buffers[j].size = size;
fpga_config_buffers[j].size_written = 0;
fpga_config_buffers[j].write_requested = 1;
fpga_config_buffers[j].block_number =
blocks_submitted++;
fpga_config_buffers[j].subblocks_sent = 0;
break;
}
}
if (is_fpga_config_buffer_full())
return INTEL_SIP_SMC_STATUS_BUSY;
return INTEL_SIP_SMC_STATUS_OK;
}
static int is_out_of_sec_range(uint64_t reg_addr)
{
switch (reg_addr) {
case(0xF8011100): /* ECCCTRL1 */
case(0xF8011104): /* ECCCTRL2 */
case(0xF8011110): /* ERRINTEN */
case(0xF8011114): /* ERRINTENS */
case(0xF8011118): /* ERRINTENR */
case(0xF801111C): /* INTMODE */
case(0xF8011120): /* INTSTAT */
case(0xF8011124): /* DIAGINTTEST */
case(0xF801112C): /* DERRADDRA */
case(0xFFD12028): /* SDMMCGRP_CTRL */
case(0xFFD12044): /* EMAC0 */
case(0xFFD12048): /* EMAC1 */
case(0xFFD1204C): /* EMAC2 */
case(0xFFD12090): /* ECC_INT_MASK_VALUE */
case(0xFFD12094): /* ECC_INT_MASK_SET */
case(0xFFD12098): /* ECC_INT_MASK_CLEAR */
case(0xFFD1209C): /* ECC_INTSTATUS_SERR */
case(0xFFD120A0): /* ECC_INTSTATUS_DERR */
case(0xFFD120C0): /* NOC_TIMEOUT */
case(0xFFD120C4): /* NOC_IDLEREQ_SET */
case(0xFFD120C8): /* NOC_IDLEREQ_CLR */
case(0xFFD120D0): /* NOC_IDLEACK */
case(0xFFD120D4): /* NOC_IDLESTATUS */
case(0xFFD12200): /* BOOT_SCRATCH_COLD0 */
case(0xFFD12204): /* BOOT_SCRATCH_COLD1 */
case(0xFFD12220): /* BOOT_SCRATCH_COLD8 */
case(0xFFD12224): /* BOOT_SCRATCH_COLD9 */
return 0;
default:
break;
}
return -1;
}
/* Secure register access */
uint32_t intel_secure_reg_read(uint64_t reg_addr, uint32_t *retval)
{
if (is_out_of_sec_range(reg_addr))
return INTEL_SIP_SMC_STATUS_ERROR;
*retval = mmio_read_32(reg_addr);
return INTEL_SIP_SMC_STATUS_OK;
}
uint32_t intel_secure_reg_write(uint64_t reg_addr, uint32_t val,
uint32_t *retval)
{
if (is_out_of_sec_range(reg_addr))
return INTEL_SIP_SMC_STATUS_ERROR;
mmio_write_32(reg_addr, val);
return intel_secure_reg_read(reg_addr, retval);
}
uint32_t intel_secure_reg_update(uint64_t reg_addr, uint32_t mask,
uint32_t val, uint32_t *retval)
{
if (!intel_secure_reg_read(reg_addr, retval)) {
*retval &= ~mask;
*retval |= val;
return intel_secure_reg_write(reg_addr, *retval, retval);
}
return INTEL_SIP_SMC_STATUS_ERROR;
}
/* Intel Remote System Update (RSU) services */
uint64_t intel_rsu_update_address;
static uint32_t intel_rsu_status(uint64_t *respbuf, unsigned int respbuf_sz)
{
if (mailbox_rsu_status((uint32_t *)respbuf, respbuf_sz) < 0)
return INTEL_SIP_SMC_RSU_ERROR;
return INTEL_SIP_SMC_STATUS_OK;
}
static uint32_t intel_rsu_update(uint64_t update_address)
{
intel_rsu_update_address = update_address;
return INTEL_SIP_SMC_STATUS_OK;
}
static uint32_t intel_rsu_notify(uint32_t execution_stage)
{
if (mailbox_hps_stage_notify(execution_stage) < 0)
return INTEL_SIP_SMC_RSU_ERROR;
return INTEL_SIP_SMC_STATUS_OK;
}
static uint32_t intel_rsu_retry_counter(uint32_t *respbuf, uint32_t respbuf_sz,
uint32_t *ret_stat)
{
if (mailbox_rsu_status((uint32_t *)respbuf, respbuf_sz) < 0)
return INTEL_SIP_SMC_RSU_ERROR;
*ret_stat = respbuf[8];
return INTEL_SIP_SMC_STATUS_OK;
}
/* Mailbox services */
static uint32_t intel_mbox_send_cmd(uint32_t cmd, uint32_t *args, uint32_t len,
uint32_t urgent, uint32_t *response,
uint32_t resp_len, int *mbox_status,
int *len_in_resp)
{
*len_in_resp = 0;
*mbox_status = 0;
if (!is_address_in_ddr_range((uint64_t)args, sizeof(uint32_t) * len))
return INTEL_SIP_SMC_STATUS_REJECTED;
int status = mailbox_send_cmd(MBOX_JOB_ID, cmd, args, len, urgent,
response, resp_len);
if (status < 0) {
*mbox_status = -status;
return INTEL_SIP_SMC_STATUS_ERROR;
}
*mbox_status = 0;
*len_in_resp = status;
return INTEL_SIP_SMC_STATUS_OK;
}
/*
* This function is responsible for handling all SiP calls from the NS world
*/
uintptr_t sip_smc_handler(uint32_t smc_fid,
u_register_t x1,
u_register_t x2,
u_register_t x3,
u_register_t x4,
void *cookie,
void *handle,
u_register_t flags)
{
uint32_t retval = 0;
uint32_t status = INTEL_SIP_SMC_STATUS_OK;
uint32_t completed_addr[3];
uint64_t rsu_respbuf[9];
u_register_t x5, x6;
int mbox_status, len_in_resp;
switch (smc_fid) {
case SIP_SVC_UID:
/* Return UID to the caller */
SMC_UUID_RET(handle, intl_svc_uid);
case INTEL_SIP_SMC_FPGA_CONFIG_ISDONE:
status = intel_mailbox_fpga_config_isdone(x1);
SMC_RET4(handle, status, 0, 0, 0);
case INTEL_SIP_SMC_FPGA_CONFIG_GET_MEM:
SMC_RET3(handle, INTEL_SIP_SMC_STATUS_OK,
INTEL_SIP_SMC_FPGA_CONFIG_ADDR,
INTEL_SIP_SMC_FPGA_CONFIG_SIZE -
INTEL_SIP_SMC_FPGA_CONFIG_ADDR);
case INTEL_SIP_SMC_FPGA_CONFIG_START:
status = intel_fpga_config_start(x1);
SMC_RET4(handle, status, 0, 0, 0);
case INTEL_SIP_SMC_FPGA_CONFIG_WRITE:
status = intel_fpga_config_write(x1, x2);
SMC_RET4(handle, status, 0, 0, 0);
case INTEL_SIP_SMC_FPGA_CONFIG_COMPLETED_WRITE:
status = intel_fpga_config_completed_write(completed_addr,
&retval, &rcv_id);
switch (retval) {
case 1:
SMC_RET4(handle, INTEL_SIP_SMC_STATUS_OK,
completed_addr[0], 0, 0);
case 2:
SMC_RET4(handle, INTEL_SIP_SMC_STATUS_OK,
completed_addr[0],
completed_addr[1], 0);
case 3:
SMC_RET4(handle, INTEL_SIP_SMC_STATUS_OK,
completed_addr[0],
completed_addr[1],
completed_addr[2]);
case 0:
SMC_RET4(handle, status, 0, 0, 0);
default:
mailbox_clear_response();
SMC_RET1(handle, INTEL_SIP_SMC_STATUS_ERROR);
}
case INTEL_SIP_SMC_REG_READ:
status = intel_secure_reg_read(x1, &retval);
SMC_RET3(handle, status, retval, x1);
case INTEL_SIP_SMC_REG_WRITE:
status = intel_secure_reg_write(x1, (uint32_t)x2, &retval);
SMC_RET3(handle, status, retval, x1);
case INTEL_SIP_SMC_REG_UPDATE:
status = intel_secure_reg_update(x1, (uint32_t)x2,
(uint32_t)x3, &retval);
SMC_RET3(handle, status, retval, x1);
case INTEL_SIP_SMC_RSU_STATUS:
status = intel_rsu_status(rsu_respbuf,
ARRAY_SIZE(rsu_respbuf));
if (status) {
SMC_RET1(handle, status);
} else {
SMC_RET4(handle, rsu_respbuf[0], rsu_respbuf[1],
rsu_respbuf[2], rsu_respbuf[3]);
}
case INTEL_SIP_SMC_RSU_UPDATE:
status = intel_rsu_update(x1);
SMC_RET1(handle, status);
case INTEL_SIP_SMC_RSU_NOTIFY:
status = intel_rsu_notify(x1);
SMC_RET1(handle, status);
case INTEL_SIP_SMC_RSU_RETRY_COUNTER:
status = intel_rsu_retry_counter((uint32_t *)rsu_respbuf,
ARRAY_SIZE(rsu_respbuf), &retval);
if (status) {
SMC_RET1(handle, status);
} else {
SMC_RET2(handle, status, retval);
}
case INTEL_SIP_SMC_MBOX_SEND_CMD:
x5 = SMC_GET_GP(handle, CTX_GPREG_X5);
x6 = SMC_GET_GP(handle, CTX_GPREG_X6);
status = intel_mbox_send_cmd(x1, (uint32_t *)x2, x3, x4,
(uint32_t *)x5, x6, &mbox_status,
&len_in_resp);
SMC_RET4(handle, status, mbox_status, x5, len_in_resp);
default:
return socfpga_sip_handler(smc_fid, x1, x2, x3, x4,
cookie, handle, flags);
}
}
DECLARE_RT_SVC(
socfpga_sip_svc,
OEN_SIP_START,
OEN_SIP_END,
SMC_TYPE_FAST,
NULL,
sip_smc_handler
);
DECLARE_RT_SVC(
socfpga_sip_svc_std,
OEN_SIP_START,
OEN_SIP_END,
SMC_TYPE_YIELD,
NULL,
sip_smc_handler
);