diff options
Diffstat (limited to 'samsung-ipc/devices/xmm626/xmm626_mipi.c')
-rw-r--r-- | samsung-ipc/devices/xmm626/xmm626_mipi.c | 654 |
1 files changed, 654 insertions, 0 deletions
diff --git a/samsung-ipc/devices/xmm626/xmm626_mipi.c b/samsung-ipc/devices/xmm626/xmm626_mipi.c new file mode 100644 index 0000000..667a4ea --- /dev/null +++ b/samsung-ipc/devices/xmm626/xmm626_mipi.c @@ -0,0 +1,654 @@ +/* + * This file is part of libsamsung-ipc. + * + * Copyright (C) 2012 Alexander Tarasikov <alexander.tarasikov@gmail.com> + * Copyright (C) 2013-2014 Paul Kocialkowski <contact@paulk.fr> + * + * Based on the incomplete C++ implementation which is: + * Copyright (C) 2012 Sergey Gridasov <grindars@gmail.com> + * + * libsamsung-ipc 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, either version 2 of the License, or + * (at your option) any later version. + * + * libsamsung-ipc 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. + * + * You should have received a copy of the GNU General Public License + * along with libsamsung-ipc. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> +#include <string.h> +#include <sys/select.h> + +#include <samsung-ipc.h> +#include <utils.h> + +#include "xmm626.h" +#include "xmm626_mipi.h" + +int xmm626_mipi_crc_calculate(const void *data, size_t size) +{ + unsigned char crc; + int mipi_crc; + + crc = xmm626_crc_calculate(data, size); + mipi_crc = (crc << 24) | 0xffffff; + + return mipi_crc; +} + +int xmm626_mipi_ack_read(int device_fd, unsigned short ack) +{ + struct timeval timeout; + fd_set fds; + unsigned int value; + int rc; + int i; + + timeout.tv_sec = 1; + timeout.tv_usec = 0; + + FD_ZERO(&fds); + FD_SET(device_fd, &fds); + + for (i = 0; i < 50; i++) { + rc = select(device_fd + 1, &fds, NULL, NULL, &timeout); + if (rc <= 0) + return -1; + + value = 0; + rc = read(device_fd, &value, sizeof(value)); + if (rc < (int) sizeof(value)) + continue; + + if ((value & 0xffff) == ack) + return 0; + } + + return -1; +} + +int xmm626_mipi_psi_send(struct ipc_client *client, int device_fd, + const void *psi_data, unsigned short psi_size) +{ + struct xmm626_mipi_psi_header psi_header; + char at[] = XMM626_AT; + int psi_crc; + struct timeval timeout; + fd_set fds; + size_t wc; + size_t length; + unsigned char *p; + int rc; + int i; + + if (client == NULL || device_fd < 0 || psi_data == NULL || psi_size == 0) + return -1; + + FD_ZERO(&fds); + + i = 0; + length = strlen(at); + + do { + FD_SET(device_fd, &fds); + + timeout.tv_sec = 0; + timeout.tv_usec = 100000; + + rc = write(device_fd, at, length); + if (rc < (int) length) { + ipc_client_log(client, "Writing ATAT in ASCII failed"); + goto error; + } + ipc_client_log(client, "Wrote ATAT in ASCII"); + + rc = select(device_fd + 1, &fds, NULL, NULL, &timeout); + if (rc < 0) { + ipc_client_log(client, "Waiting for bootup failed"); + goto error; + } + + if (i++ > 50) { + ipc_client_log(client, "Waiting for bootup failed"); + goto error; + } + } while(rc == 0); + + rc = xmm626_mipi_ack_read(device_fd, XMM626_MIPI_BOOT0_ACK); + if (rc < 0) { + ipc_client_log(client, "Reading boot ACK failed"); + goto error; + } + + psi_header.padding = XMM626_PSI_PADDING; + psi_header.length = ((psi_size >> 8) & 0xff) | ((psi_size & 0xff) << 8); + psi_header.magic = XMM626_PSI_MAGIC; + + rc = write(device_fd, &psi_header, sizeof(psi_header)); + if (rc < (int) sizeof(psi_header)) { + ipc_client_log(client, "Writing PSI header failed"); + goto error; + } + ipc_client_log(client, "Wrote PSI header"); + + p = (unsigned char *) psi_data; + + wc = 0; + while (wc < psi_size) { + rc = write(device_fd, (void *) p, psi_size - wc); + if (rc <= 0) { + ipc_client_log(client, "Writing PSI failed"); + goto error; + } + + p += rc; + wc += rc; + } + + psi_crc = xmm626_mipi_crc_calculate(psi_data, psi_size); + + ipc_client_log(client, "Wrote PSI, CRC is 0x%x", psi_crc); + + rc = write(device_fd, &psi_crc, sizeof(psi_crc)); + if (rc < (int) sizeof(psi_crc)) { + ipc_client_log(client, "Writing PSI CRC failed"); + goto error; + } + ipc_client_log(client, "Wrote PSI CRC (0x%x)", psi_crc); + + rc = xmm626_mipi_ack_read(device_fd, XMM626_MIPI_PSI_ACK); + if (rc < 0) { + ipc_client_log(client, "Reading PSI ACK failed"); + goto error; + } + + rc = 0; + goto complete; + +error: + rc = -1; + +complete: + return rc; +} + +int xmm626_mipi_ebl_send(struct ipc_client *client, int device_fd, + const void *ebl_data, size_t ebl_size) +{ + unsigned short boot_magic[4]; + unsigned char ebl_crc; + size_t chunk; + size_t count; + size_t wc; + size_t size; + size_t length; + unsigned char *p; + int rc; + + if (client == NULL || device_fd < 0 || ebl_data == NULL || ebl_size == 0) + return -1; + + boot_magic[0] = 0; + boot_magic[1] = 0; + boot_magic[2] = XMM626_MIPI_BOOT1_MAGIC; + boot_magic[3] = XMM626_MIPI_BOOT1_MAGIC; + + length = sizeof(boot_magic); + + rc = write(device_fd, &length, sizeof(length)); + if (rc < (int) sizeof(length)) { + ipc_client_log(client, "Writing boot magic length failed"); + goto error; + } + + rc = write(device_fd, &boot_magic, length); + if (rc < (int) length) { + ipc_client_log(client, "Writing boot magic failed"); + goto error; + } + ipc_client_log(client, "Wrote boot magic"); + + rc = xmm626_mipi_ack_read(device_fd, XMM626_MIPI_BOOT1_ACK); + if (rc < 0) { + ipc_client_log(client, "Reading boot magic ACK failed"); + goto error; + } + + size = sizeof(ebl_size); + + rc = write(device_fd, &size, sizeof(size)); + if (rc < (int) sizeof(size)) { + ipc_client_log(client, "Writing EBL size length failed"); + goto error; + } + + rc = write(device_fd, &ebl_size, size); + if (rc < (int) size) { + ipc_client_log(client, "Writing EBL size failed"); + goto error; + } + ipc_client_log(client, "Wrote EBL size"); + + rc = xmm626_mipi_ack_read(device_fd, XMM626_MIPI_EBL_SIZE_ACK); + if (rc < 0) { + ipc_client_log(client, "Reading EBL size ACK failed"); + goto error; + } + + ebl_size++; + + rc = write(device_fd, &ebl_size, size); + if (rc < (int) size) { + ipc_client_log(client, "Writing EBL size failed"); + goto error; + } + + ebl_size--; + + p = (unsigned char *) ebl_data; + + chunk = XMM626_MIPI_EBL_CHUNK; + wc = 0; + while (wc < ebl_size) { + count = chunk < ebl_size - wc ? chunk : ebl_size - wc; + + rc = write(device_fd, (void *) p, count); + if (rc <= 0) { + ipc_client_log(client, "Writing EBL failed"); + goto error; + } + + p += rc; + wc += rc; + } + + ebl_crc = xmm626_crc_calculate(ebl_data, ebl_size); + + ipc_client_log(client, "Wrote EBL, CRC is 0x%x", ebl_crc); + + rc = write(device_fd, &ebl_crc, sizeof(ebl_crc)); + if (rc < (int) sizeof(ebl_crc)) { + ipc_client_log(client, "Writing EBL CRC failed"); + goto error; + } + ipc_client_log(client, "Wrote EBL CRC (0x%x)", ebl_crc); + + rc = xmm626_mipi_ack_read(device_fd, XMM626_MIPI_EBL_ACK); + if (rc < 0) { + ipc_client_log(client, "Reading EBL ACK failed"); + goto error; + } + + rc = 0; + goto complete; + +error: + rc = -1; + +complete: + return rc; +} + +int xmm626_mipi_command_send(int device_fd, unsigned short code, + const void *data, size_t size, int ack, int short_footer) +{ + struct xmm626_mipi_command_header header; + struct xmm626_mipi_command_footer footer; + void *buffer = NULL; + size_t length; + size_t footer_length; + struct timeval timeout; + fd_set fds; + size_t chunk; + size_t c; + unsigned char *p; + int rc; + int i; + + if (device_fd < 0 || data == NULL || size <= 0) + return -1; + + header.size = size + sizeof(header); + header.magic = XMM626_MIPI_COMMAND_HEADER_MAGIC; + header.code = code; + header.data_size = size; + + footer.checksum = (size & 0xffff) + code; + footer.magic = XMM626_MIPI_COMMAND_FOOTER_MAGIC; + footer.unknown = XMM626_MIPI_COMMAND_FOOTER_UNKNOWN; + + p = (unsigned char *) data; + + for (i = 0; i < (int) size; i++) + footer.checksum += *p++; + + footer_length = sizeof(footer); + if (short_footer) + footer_length -= sizeof(short); + + length = sizeof(header) + size + footer_length; + buffer = calloc(1, length); + + p = (unsigned char *) buffer; + memcpy(p, &header, sizeof(header)); + p += sizeof(header); + memcpy(p, data, size); + p += size; + memcpy(p, &footer, footer_length); + + rc = write(device_fd, buffer, length); + if (rc < (int) length) + goto error; + + free(buffer); + buffer = NULL; + + if (!ack) { + rc = 0; + goto complete; + } + + FD_ZERO(&fds); + FD_SET(device_fd, &fds); + + timeout.tv_sec = 1; + timeout.tv_usec = 0; + + rc = select(device_fd + 1, &fds, NULL, NULL, &timeout); + if (rc <= 0) + goto error; + + rc = read(device_fd, &length, sizeof(length)); + if (rc < (int) sizeof(length) || length <= 0) + goto error; + + length += sizeof(unsigned int); + if (length % 4 != 0) + length += length % 4; + + if (length < (int) sizeof(buffer)) + goto error; + + buffer = calloc(1, length); + + p = (unsigned char *) buffer; + memcpy(p, &length, sizeof(length)); + p += sizeof(length); + + chunk = 4; + c = sizeof(length); + while (c < length) { + rc = select(device_fd + 1, &fds, NULL, NULL, &timeout); + if (rc <= 0) + goto error; + + rc = read(device_fd, (void *) p, chunk); + if (rc < (int) chunk) + goto error; + + p += rc; + c += rc; + } + + memcpy(&header, buffer, sizeof(header)); + if (header.code != code) + goto error; + + rc = 0; + goto complete; + +error: + rc = -1; + +complete: + if (buffer != NULL) + free(buffer); + + return rc; +} + +int xmm626_mipi_modem_data_send(int device_fd, const void *data, size_t size, + int address) +{ + size_t chunk; + size_t count; + size_t c; + unsigned char *p; + int rc; + + if (device_fd < 0 || data == NULL || size == 0) + return -1; + + rc = xmm626_mipi_command_send(device_fd, XMM626_COMMAND_FLASH_SET_ADDRESS, &address, sizeof(address), 1, 0); + if (rc < 0) + goto error; + + p = (unsigned char *) data; + + chunk = XMM626_MIPI_MODEM_DATA_CHUNK; + c = 0; + while (c < size) { + count = chunk < size - c ? chunk : size - c; + + rc = xmm626_mipi_command_send(device_fd, XMM626_COMMAND_FLASH_WRITE_BLOCK, p, count, 1, 1); + if (rc < 0) + goto error; + + p += count; + c += count; + } + + rc = 0; + goto complete; + +error: + rc = -1; + +complete: + return rc; +} + +int xmm626_mipi_port_config_send(struct ipc_client *client, int device_fd) +{ + void *buffer = NULL; + size_t length; + struct timeval timeout; + fd_set fds; + size_t chunk; + size_t count; + size_t c; + unsigned char *p; + int rc; + + if (client == NULL || device_fd < 0) + return -1; + + FD_ZERO(&fds); + FD_SET(device_fd, &fds); + + timeout.tv_sec = 2; + timeout.tv_usec = 0; + + rc = select(device_fd + 1, &fds, NULL, NULL, &timeout); + if (rc <= 0) + goto error; + + rc = read(device_fd, &length, sizeof(length)); + if (rc < (int) sizeof(length) || length == 0) { + ipc_client_log(client, "Reading port config length failed"); + goto error; + } + ipc_client_log(client, "Read port config length (0x%x)", length); + + buffer = calloc(1, length); + + p = (unsigned char *) buffer; + + chunk = 4; + c = 0; + while (c < length) { + count = chunk < length - c ? chunk : length - c; + + rc = select(device_fd + 1, &fds, NULL, NULL, &timeout); + if (rc <= 0) + goto error; + + rc = read(device_fd, p, count); + if (rc < (int) count) { + ipc_client_log(client, "Reading port config failed"); + goto error; + } + + p += count; + c += count; + } + ipc_client_log(client, "Read port config"); + + rc = xmm626_mipi_command_send(device_fd, XMM626_COMMAND_SET_PORT_CONFIG, buffer, length, 1, 0); + if (rc < 0) { + ipc_client_log(client, "Sending port config command failed"); + goto error; + } + + rc = 0; + goto complete; + +error: + rc = -1; + +complete: + if (buffer != NULL) + free(buffer); + + return rc; +} + +int xmm626_mipi_sec_start_send(struct ipc_client *client, int device_fd, + const void *sec_data, size_t sec_size) +{ + int rc; + + if (client == NULL || device_fd < 0 || sec_data == NULL || sec_size == 0) + return -1; + + rc = xmm626_mipi_command_send(device_fd, XMM626_COMMAND_SEC_START, sec_data, sec_size, 1, 0); + if (rc < 0) + return -1; + + return 0; +} + +int xmm626_mipi_sec_end_send(struct ipc_client *client, int device_fd) +{ + unsigned short sec_data; + size_t sec_size; + int rc; + + if (client == NULL || device_fd < 0) + return -1; + + sec_data = XMM626_SEC_END_MAGIC; + sec_size = sizeof(sec_data); + + rc = xmm626_mipi_command_send(device_fd, XMM626_COMMAND_SEC_END, &sec_data, sec_size, 1, 1); + if (rc < 0) + return -1; + + return 0; +} + +int xmm626_mipi_firmware_send(struct ipc_client *client, int device_fd, + const void *firmware_data, size_t firmware_size) +{ + int rc; + + if (client == NULL || device_fd < 0 || firmware_data == NULL || firmware_size == 0) + return -1; + + rc = xmm626_mipi_modem_data_send(device_fd, firmware_data, firmware_size, XMM626_FIRMWARE_ADDRESS); + if (rc < 0) + return -1; + + return 0; +} + +int xmm626_mipi_nv_data_send(struct ipc_client *client, int device_fd) +{ + void *nv_data = NULL; + size_t nv_size; + int rc; + + if (client == NULL || device_fd < 0) + return -1; + + nv_size = ipc_client_nv_data_size(client); + if (nv_size == 0) + return -1; + + nv_data = ipc_nv_data_load(client); + if (nv_data == NULL) { + ipc_client_log(client, "Loading nv_data failed"); + goto error; + } + ipc_client_log(client, "Loaded nv_data"); + + rc = xmm626_mipi_modem_data_send(device_fd, nv_data, nv_size, XMM626_NV_DATA_ADDRESS); + if (rc < 0) + goto error; + + rc = 0; + goto complete; + +error: + rc = -1; + +complete: + if (nv_data != NULL) + free(nv_data); + + return rc; +} + +int xmm626_mipi_mps_data_send(struct ipc_client *client, int device_fd, + const void *mps_data, size_t mps_size) +{ + int rc; + + if (client == NULL || device_fd < 0 || mps_data == NULL || mps_size == 0) + return -1; + + rc = xmm626_mipi_modem_data_send(device_fd, mps_data, mps_size, XMM626_MPS_DATA_ADDRESS); + if (rc < 0) + return -1; + + return 0; +} + +int xmm626_mipi_hw_reset_send(struct ipc_client *client, int device_fd) +{ + unsigned int hw_reset_data; + size_t hw_reset_size; + int rc; + + if (client == NULL || device_fd < 0) + return -1; + + hw_reset_data = XMM626_HW_RESET_MAGIC; + hw_reset_size = sizeof(hw_reset_data); + + rc = xmm626_mipi_command_send(device_fd, XMM626_COMMAND_HW_RESET, &hw_reset_data, hw_reset_size, 0, 1); + if (rc < 0) + return -1; + + return 0; +} + +// vim:ts=4:sw=4:expandtab |