--- /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"
+#include "flash.h"
+
+/* Array holding erased state of the flash sectors. */
+static bool g_is_erased[FLASH_MAX_SECTOR_COUNT];
+
+extern uint8_t g_retain_buf[];
+
+uint32_t flashloader_init(struct flash_params *params, uint8_t *buf1,
+ uint8_t *buf2)
+{
+ /* Initialize params buffers */
+ memset((void *)params, 0, 2 * sizeof(struct flash_params));
+ params[0].buf_addr = (uint32_t)buf1;
+ params[1].buf_addr = (uint32_t)buf2;
+
+ /* Mark all sectors at "not erased" */
+ memset(g_is_erased, false, sizeof(g_is_erased));
+
+ return STATUS_OK;
+}
+
+uint32_t flashloader_erase_and_program(uint8_t *src, uint32_t address,
+ uint32_t byte_count)
+{
+ if (byte_count > BUFFER_LEN)
+ return STATUS_FAILED_INVALID_ARGUMENTS;
+
+ /* Erase affected sectors */
+ uint32_t status = flashloader_erase_sectors(address, byte_count);
+
+ if (status != STATUS_OK)
+ return status;
+
+ /* Program data */
+ status = flashloader_program(src, address, byte_count);
+
+ return status;
+}
+
+uint32_t flashloader_program_with_retain(uint8_t *src, uint32_t address,
+ uint32_t byte_count)
+{
+#if (BUFFER_LEN > FLASH_ERASE_SIZE)
+#error Buffer size cannot be larger than the flash sector size!
+#endif
+
+ uint32_t first_sector_idx;
+ uint32_t last_sector_idx;
+ uint32_t status = STATUS_OK;
+ uint32_t i;
+
+ first_sector_idx = flashloader_address_to_sector(address);
+ last_sector_idx = flashloader_address_to_sector(address + byte_count - 1);
+
+ /* Mark all sectors as "not erased" before starting */
+ memset(g_is_erased, false, sizeof(g_is_erased));
+
+ uint32_t sec_offset = address % FLASH_ERASE_SIZE;
+ uint32_t curr_count;
+ uint32_t src_offset = 0;
+
+ for (i = first_sector_idx; i <= last_sector_idx; i++) {
+
+ /* Chop off at sector boundary if data goes into the next sector. */
+ curr_count = byte_count;
+ if ((address + byte_count) > ((i+1) * FLASH_ERASE_SIZE))
+ curr_count -= (address + byte_count) % FLASH_ERASE_SIZE;
+
+ /* Copy flash sector to retain buffer */
+ memcpy(g_retain_buf, (void *)(i * FLASH_ERASE_SIZE), FLASH_ERASE_SIZE);
+
+ /* Copy data buffer to retain buffer */
+ memcpy(&g_retain_buf[sec_offset], &src[src_offset], curr_count);
+
+ /* Erase and program from retain buffer */
+ status = flashloader_erase_and_program(g_retain_buf,
+ (i * FLASH_ERASE_SIZE), FLASH_ERASE_SIZE);
+ if (status != STATUS_OK)
+ return status;
+
+ address += curr_count;
+ sec_offset = address % FLASH_ERASE_SIZE;
+ byte_count -= curr_count;
+ src_offset += curr_count;
+ }
+
+ return status;
+}
+
+uint32_t flashloader_erase_all(void)
+{
+ if (flash_bank_erase(true) != FAPI_STATUS_SUCCESS)
+ return STATUS_FAILED_ERASE_ALL;
+
+ memset(g_is_erased, true, sizeof(g_is_erased));
+
+ return STATUS_OK;
+}
+
+uint32_t flashloader_erase_sectors(uint32_t address, uint32_t byte_count)
+{
+ uint32_t first_sector_idx;
+ uint32_t last_sector_idx;
+ uint32_t status;
+ uint32_t idx;
+
+ /* Floor address to the start of the sector and convert to sector number */
+ first_sector_idx = flashloader_address_to_sector(address);
+ last_sector_idx = flashloader_address_to_sector(address + byte_count - 1);
+
+ /* Erase given sector(s) */
+ for (idx = first_sector_idx; idx <= last_sector_idx; idx++) {
+
+ /* Only erase sectors that haven't already been erased */
+ if (g_is_erased[idx] == false) {
+ status = flash_sector_erase(idx * FLASH_ERASE_SIZE);
+ if (status != FAPI_STATUS_SUCCESS) {
+ status = (STATUS_FAILED_SECTOR_ERASE |
+ ((idx << STATUS_EXT_INFO_S) & STATUS_EXT_INFO_M) |
+ ((status << STATUS_ROM_CODE_S) & STATUS_ROM_CODE_M));
+ return status;
+ }
+ g_is_erased[idx] = true;
+ }
+ }
+
+ return STATUS_OK;
+}
+
+uint32_t flashloader_program(uint8_t *src, uint32_t address,
+ uint32_t byte_count)
+{
+ uint32_t status = flash_program(src, address, byte_count);
+ if (status != FAPI_STATUS_SUCCESS) {
+ status = (STATUS_FAILED_PROGRAM |
+ ((status << STATUS_ROM_CODE_S) & STATUS_ROM_CODE_M));
+ }
+
+ return STATUS_OK;
+}
Code Review / openocd.git / blobdiff