From 57595a7937fcaccdbfe8349203d19cf02f585c2c Mon Sep 17 00:00:00 2001
From: wangjianyu3 <wangjianyu3@xiaomi.com>
Date: Tue, 26 Nov 2024 17:07:22 +0800
Subject: [PATCH] boards/xtensa/esp32s3: Add TXTABLE support for esp32s3

TXTABLE - Text based Partition Table

  https://github.com/apache/nuttx/pull/9936
  https://nuttx.apache.org/docs/latest/components/filesystem/partition.html#text-based-partition-table

Configuration

  + CONFIG_TXTABLE_PARTITION=y

The backup text partition table

  + CONFIG_TXTABLE_DEFAULT_PARTITION=1

  nsh> cat /etc/txtable.txt
  TXTABLE0
  data 0x100000 0

Update txtable at runtime

  dd if=/dev/zero of=/dev/txtable
  cat /etc/txtable.txt > /dev/txtable

Runtime - Partition devices "data" and "txtable" were registered

  # /dev/data    - The partition descirbed by txtable
  # /dev/txtable - Mapping to the last eraseblock of MTD

  nsh> ls -l /dev/
  /dev:
   dr--r--r--           0 adb0/
   crw-rw-rw-           0 console
   frw-rw-rw-     1044480 data
   frw-rw-rw-     1048576 esp32s3flash
   c-w--w--w-           0 log
   crw-rw-rw-           0 null
   crw-rw-rw-           0 ptmx
   dr--r--r--           0 pts/
   brw-rw-rw-        1024 ram0
   crw-rw-rw-           0 ttyS0
   frw-rw-rw-        4096 txtable
   crw-rw-rw-           0 zero

Signed-off-by: wangjianyu3 <wangjianyu3@xiaomi.com>
---
 .../esp32s3/common/src/esp32s3_board_spiflash.c      | 12 ++++++++++++
 boards/xtensa/esp32s3/esp32s3-devkit/src/Make.defs   |  4 ++++
 .../esp32s3/esp32s3-devkit/src/etc/txtable.txt       |  2 ++
 3 files changed, 18 insertions(+)
 create mode 100644 boards/xtensa/esp32s3/esp32s3-devkit/src/etc/txtable.txt

diff --git a/boards/xtensa/esp32s3/common/src/esp32s3_board_spiflash.c b/boards/xtensa/esp32s3/common/src/esp32s3_board_spiflash.c
index 52fe4ded10..7d0ceecc6d 100644
--- a/boards/xtensa/esp32s3/common/src/esp32s3_board_spiflash.c
+++ b/boards/xtensa/esp32s3/common/src/esp32s3_board_spiflash.c
@@ -40,6 +40,9 @@
 #include <nuttx/spi/spi.h>
 #include <nuttx/mtd/mtd.h>
 #include <nuttx/fs/nxffs.h>
+#ifdef CONFIG_MTD_PARTITION
+#include <nuttx/fs/partition.h>
+#endif
 #ifdef CONFIG_BCH
 #include <nuttx/drivers/drivers.h>
 #endif
@@ -330,6 +333,15 @@ static int init_storage_partition(void)
       return ret;
     }
 
+#ifdef CONFIG_MTD_PARTITION
+  ret = parse_mtd_partition(mtd, NULL, NULL);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: Failed to parse MTD partition: %d\n", ret);
+      return ret;
+    }
+#endif /* CONFIG_MTD_PARTITION */
+
 #endif
 
   return ret;
diff --git a/boards/xtensa/esp32s3/esp32s3-devkit/src/Make.defs b/boards/xtensa/esp32s3/esp32s3-devkit/src/Make.defs
index 2443ad8922..7b3f4a94fc 100644
--- a/boards/xtensa/esp32s3/esp32s3-devkit/src/Make.defs
+++ b/boards/xtensa/esp32s3/esp32s3-devkit/src/Make.defs
@@ -63,4 +63,8 @@ CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src
 
 ifeq ($(CONFIG_ETC_ROMFS),y)
 RCSRCS  = etc/init.d/rc.sysinit etc/init.d/rcS
+
+ifeq ($(CONFIG_TXTABLE_PARTITION),y)
+RCRAWS  = etc/txtable.txt
+endif # CONFIG_TXTABLE_PARTITION
 endif
diff --git a/boards/xtensa/esp32s3/esp32s3-devkit/src/etc/txtable.txt b/boards/xtensa/esp32s3/esp32s3-devkit/src/etc/txtable.txt
new file mode 100644
index 0000000000..903b1684fe
--- /dev/null
+++ b/boards/xtensa/esp32s3/esp32s3-devkit/src/etc/txtable.txt
@@ -0,0 +1,2 @@
+TXTABLE0
+data 0x100000 0