bootloader: Move chip specific things under chip specific folders

- move systick.c under chip specific sources
- move do_jump into chip specific main.c as arch_do_jump
- wrap flash writes to "arch_flash_write" and implement in chip specific main.c
- add bootloader TOC check
- sync image_toc.h with the version currently in use with old bootloader

Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>

platforms/nuttx/src/bootloader/common/lib/flash_cache.h

@@ -0,0 +1,69 @@
+/****************************************************************************
+ *
+ *   Copyright (c) 2019 PX4 Development Team. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. Neither the name PX4 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.
+ *
+ ****************************************************************************/
+#pragma once
+
+/* The modern flash controllers manage flash for ECC
+ * On the H7 there is a block size (256) bits
+ * This code translates between the bootloaders word read/write
+ * interface and the H7 need for block based writes.
+ *
+ * All writes* are buffered until 8 word can be written.
+ * Verification is made from the cache. On the verification of the
+ * 8th word all the wordfs in the the cache are written to flash.
+ * If the write fails the value returned for the last word is negated
+ * to ensure an error on verification.
+ *
+ * *writes to the first 8 words of flash at APP_LOAD_ADDRESS
+ * are buffered until the "first word" is written with the real value (not 0xffffffff)
+ *
+ */
+
+#define FC_NUMBER_LINES  2                                  // Number of cache lines.
+#define FC_NUMBER_WORDS  8                                  // Number of words per cache line.
+#define FC_LAST_WORD     FC_NUMBER_WORDS-1                  // The index of the last word in cache line.
+#define FC_ADDRESS_MASK  ~(sizeof(flash_cache[0].words)-1)  // Cache tag from address
+#define FC_ADDR2INDX(a)   (((a) / sizeof(flash_cache[0].words[0])) % FC_NUMBER_WORDS) // index from address
+#define FC_CLEAN  ((uint32_t)-1)                            // Cache clean
+
+// Cache line
+typedef struct flash_cache_line_t {
+	uint32_t index;                   // Index of word written
+	uint32_t start_address;           // cache tag (address in FLASH this is buffering)
+	uint32_t words[FC_NUMBER_WORDS];  // Buffered data
+} flash_cache_line_t;
+
+// Resets the cache - all lines flashed and cache_line[0] start_address == APP_LOAD_ADDRESS
+void fc_reset(void);
+// Cache operations
+uint32_t fc_read(uint32_t address);
+int fc_write(uint32_t address, uint32_t word);