diff options
Diffstat (limited to 'plat/juno/scp_bootloader.c')
| -rw-r--r-- | plat/juno/scp_bootloader.c | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/plat/juno/scp_bootloader.c b/plat/juno/scp_bootloader.c deleted file mode 100644 index a6d25d49..00000000 --- a/plat/juno/scp_bootloader.c +++ /dev/null @@ -1,153 +0,0 @@ -/* - * Copyright (c) 2014, ARM Limited and Contributors. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * Neither the name of ARM nor the names of its contributors may be used - * to endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include <arch_helpers.h> -#include <platform.h> -#include "juno_def.h" -#include "mhu.h" -#include "scp_bootloader.h" -#include "scpi.h" - -/* Boot commands sent from AP -> SCP */ -#define BOOT_CMD_START 0x01 -#define BOOT_CMD_DATA 0x02 - -typedef struct { - uint32_t image_size; -} cmd_start_payload; - -typedef struct { - uint32_t sequence_num; - uint32_t offset; - uint32_t size; -} cmd_data_payload; - -#define BOOT_DATA_MAX_SIZE 0x1000 - -/* Boot commands sent from SCP -> AP */ -#define BOOT_CMD_ACK 0x03 -#define BOOT_CMD_NACK 0x04 - -typedef struct { - uint32_t sequence_num; -} cmd_ack_payload; - -/* - * Unlike the runtime protocol, the boot protocol uses the same memory region - * for both AP -> SCP and SCP -> AP transfers; define the address of this... - */ -static void * const cmd_payload = (void *)(MHU_SECURE_BASE + 0x0080); - -static void *scp_boot_message_start(void) -{ - mhu_secure_message_start(); - - return cmd_payload; -} - -static void scp_boot_message_send(unsigned command, size_t size) -{ - /* Make sure payload can be seen by SCP */ - if (MHU_PAYLOAD_CACHED) - flush_dcache_range((unsigned long)cmd_payload, size); - - /* Send command to SCP */ - mhu_secure_message_send(command | (size << 8)); -} - -static uint32_t scp_boot_message_wait(size_t size) -{ - uint32_t response = mhu_secure_message_wait(); - - /* Make sure we see the reply from the SCP and not any stale data */ - if (MHU_PAYLOAD_CACHED) - inv_dcache_range((unsigned long)cmd_payload, size); - - return response & 0xff; -} - -static void scp_boot_message_end(void) -{ - mhu_secure_message_end(); -} - -static int transfer_block(uint32_t sequence_num, uint32_t offset, uint32_t size) -{ - cmd_data_payload *cmd_data = scp_boot_message_start(); - cmd_data->sequence_num = sequence_num; - cmd_data->offset = offset; - cmd_data->size = size; - - scp_boot_message_send(BOOT_CMD_DATA, sizeof(*cmd_data)); - - cmd_ack_payload *cmd_ack = cmd_payload; - int ok = scp_boot_message_wait(sizeof(*cmd_ack)) == BOOT_CMD_ACK - && cmd_ack->sequence_num == sequence_num; - - scp_boot_message_end(); - - return ok; -} - -int scp_bootloader_transfer(void *image, unsigned int image_size) -{ - uintptr_t offset = (uintptr_t)image - MHU_SECURE_BASE; - uintptr_t end = offset + image_size; - uint32_t response; - - mhu_secure_init(); - - /* Initiate communications with SCP */ - do { - cmd_start_payload *cmd_start = scp_boot_message_start(); - cmd_start->image_size = image_size; - - scp_boot_message_send(BOOT_CMD_START, sizeof(*cmd_start)); - - response = scp_boot_message_wait(0); - - scp_boot_message_end(); - } while (response != BOOT_CMD_ACK); - - /* Transfer image to SCP a block at a time */ - uint32_t sequence_num = 1; - size_t size; - while ((size = end - offset) != 0) { - if (size > BOOT_DATA_MAX_SIZE) - size = BOOT_DATA_MAX_SIZE; - while (!transfer_block(sequence_num, offset, size)) - ; /* Retry forever */ - offset += size; - sequence_num++; - } - - /* Wait for SCP to signal it's ready */ - return scpi_wait_ready(); -} |