--- /dev/null
+/******************************************************************************
+*
+* Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/
+*
+* 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 Texas Instruments Incorporated 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
+* OWNER 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 <stdint.h>
+#include <stdbool.h>
+#include "flashloader.h"
+
+/* Data buffers used by host to communicate with flashloader */
+
+/* Flashloader parameter structure. */
+__attribute__ ((section(".buffers.g_cfg")))
+volatile struct flash_params g_cfg[2];
+/* Data buffer 1. */
+__attribute__ ((section(".buffers.g_buf1")))
+uint8_t g_buf1[BUFFER_LEN];
+/* Data buffer 2. */
+__attribute__ ((section(".buffers.g_buf2")))
+uint8_t g_buf2[BUFFER_LEN];
+
+/* Buffer used for program with retain feature */
+__attribute__ ((section(".buffers.g_retain_buf")))
+uint8_t g_retain_buf[BUFFER_LEN];
+
+uint32_t g_curr_buf; /* Current buffer used. */
+uint32_t g_vims_ctl; /* Saved flash cache state. */
+
+/******************************************************************************
+*
+* This function stores the current VIMS configuration before
+* - disabling VIMS flash cache
+* - flushing the flash line buffers.
+*
+* Note Not using driverlib calls because it requires using "NO_ROM" define in
+* order to work for both Cha. R1 and R2 using the same code. Manually
+* doing the steps to minimize code footprint.
+*
+******************************************************************************/
+static void disable_flash_cache()
+{
+ /* 1. Make sure VIMS is not currently changing mode (VIMS:STAT register) */
+ while ((HWREG(0x40034000) & 0x00000008) == 0x8)
+ ;
+
+ /* Save current VIMS:CTL state */
+ g_vims_ctl = HWREG(0x40034004);
+
+ /* 2. Set VIMS mode to OFF and disable flash line buffers */
+ uint32_t new_vims_ctl = g_vims_ctl | 0x33;
+ HWREG(0x40034004) = new_vims_ctl;
+
+ /* 3. Wait for VIMS to have changed mode (VIMS:STAT register) */
+ while ((HWREG(0x40034000) & 0x00000008) == 0x8)
+ ;
+}
+
+/******************************************************************************
+*
+* This function restores the VIMS configuration saved off by
+* disable_flash_cache().
+*
+* Note Not using driverlib calls because it requires using "NO_ROM" define in
+* order to work for both Cha. R1 and R2 using the same code. Manually
+* doing the steps to minimize code footprint.
+*
+******************************************************************************/
+static void restore_cache_state()
+{
+ HWREG(0x40034004) = g_vims_ctl;
+
+ /* Wait for VIMS to have changed mode (VIMS:STAT register) */
+ while ((HWREG(0x40034000) & 0x00000008) == 0x8)
+ ;
+}
+
+/******************************************************************************
+*
+* CC13xx/CC26xx flashloader main function.
+*
+******************************************************************************/
+int main(void)
+{
+ flashloader_init((struct flash_params *)g_cfg, g_buf1, g_buf2);
+
+ g_curr_buf = 0; /* start with the first buffer */
+ uint32_t status;
+
+ while (1) {
+ /* Wait for host to signal buffer is ready */
+ while (g_cfg[g_curr_buf].full == BUFFER_EMPTY)
+ ;
+
+ disable_flash_cache();
+
+ /* Perform requested task */
+ switch (g_cfg[g_curr_buf].cmd) {
+ case CMD_ERASE_ALL:
+ status = flashloader_erase_all();
+ break;
+ case CMD_PROGRAM:
+ status =
+ flashloader_program(
+ (uint8_t *)g_cfg[g_curr_buf].buf_addr,
+ g_cfg[g_curr_buf].dest, g_cfg[g_curr_buf].len);
+ break;
+ case CMD_ERASE_AND_PROGRAM:
+ status =
+ flashloader_erase_and_program(
+ (uint8_t *)g_cfg[g_curr_buf].buf_addr,
+ g_cfg[g_curr_buf].dest, g_cfg[g_curr_buf].len);
+ break;
+ case CMD_ERASE_AND_PROGRAM_WITH_RETAIN:
+ status =
+ flashloader_program_with_retain(
+ (uint8_t *)g_cfg[g_curr_buf].buf_addr,
+ g_cfg[g_curr_buf].dest, g_cfg[g_curr_buf].len);
+ break;
+ case CMD_ERASE_SECTORS:
+ status =
+ flashloader_erase_sectors(g_cfg[g_curr_buf].dest,
+ g_cfg[g_curr_buf].len);
+ break;
+ default:
+ status = STATUS_FAILED_UNKNOWN_COMMAND;
+ break;
+ }
+
+ restore_cache_state();
+
+ /* Enter infinite loop on error condition */
+ if (status != STATUS_OK) {
+ g_cfg[g_curr_buf].full = status;
+ while (1)
+ ;
+ }
+
+ /* Mark current task complete, and begin looking at next buffer */
+ g_cfg[g_curr_buf].full = BUFFER_EMPTY;
+ g_curr_buf ^= 1;
+ }
+}
+
+void _exit(int status)
+{
+ /* Enter infinite loop on hitting an exit condition */
+ (void)status; /* Unused parameter */
+ while (1)
+ ;
+}
Code Review / openocd.git / blobdiff