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Diffstat (limited to 'samsung-ipc/devices/xmm626/xmm626_mipi.c')
-rw-r--r--samsung-ipc/devices/xmm626/xmm626_mipi.c654
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
generated by cgit v1.1 at 2024-05-30 15:56:34 +0000