Add 2MB obtion to 8285 generic board

The ESP8285H16 is reported to have 2MB of flash, so add an option the
the Generic 8285 board for 2MB.

Fixes esp8266#7161

Author: earlephilhower

boards.txt

@@ -625,6 +625,63 @@ esp8285.menu.eesz.1M.build.flash_ld=eagle.flash.1m.ld
 esp8285.menu.eesz.1M.build.spiffs_pagesize=256
 esp8285.menu.eesz.1M.upload.maximum_size=1023984
 esp8285.menu.eesz.1M.build.rfcal_addr=0xFC000
+esp8285.menu.eesz.2M64=2MB (FS:64KB OTA:~992KB)
+esp8285.menu.eesz.2M64.build.flash_size=2M
+esp8285.menu.eesz.2M64.build.flash_size_bytes=0x200000
+esp8285.menu.eesz.2M64.build.flash_ld=eagle.flash.2m64.ld
+esp8285.menu.eesz.2M64.build.spiffs_pagesize=256
+esp8285.menu.eesz.2M64.upload.maximum_size=1044464
+esp8285.menu.eesz.2M64.build.rfcal_addr=0x1FC000
+esp8285.menu.eesz.2M64.build.spiffs_start=0x1F0000
+esp8285.menu.eesz.2M64.build.spiffs_end=0x1FB000
+esp8285.menu.eesz.2M64.build.spiffs_blocksize=4096
+esp8285.menu.eesz.2M128=2MB (FS:128KB OTA:~960KB)
+esp8285.menu.eesz.2M128.build.flash_size=2M
+esp8285.menu.eesz.2M128.build.flash_size_bytes=0x200000
+esp8285.menu.eesz.2M128.build.flash_ld=eagle.flash.2m128.ld
+esp8285.menu.eesz.2M128.build.spiffs_pagesize=256
+esp8285.menu.eesz.2M128.upload.maximum_size=1044464
+esp8285.menu.eesz.2M128.build.rfcal_addr=0x1FC000
+esp8285.menu.eesz.2M128.build.spiffs_start=0x1E0000
+esp8285.menu.eesz.2M128.build.spiffs_end=0x1FB000
+esp8285.menu.eesz.2M128.build.spiffs_blocksize=4096
+esp8285.menu.eesz.2M256=2MB (FS:256KB OTA:~896KB)
+esp8285.menu.eesz.2M256.build.flash_size=2M
+esp8285.menu.eesz.2M256.build.flash_size_bytes=0x200000
+esp8285.menu.eesz.2M256.build.flash_ld=eagle.flash.2m256.ld
+esp8285.menu.eesz.2M256.build.spiffs_pagesize=256
+esp8285.menu.eesz.2M256.upload.maximum_size=1044464
+esp8285.menu.eesz.2M256.build.rfcal_addr=0x1FC000
+esp8285.menu.eesz.2M256.build.spiffs_start=0x1C0000
+esp8285.menu.eesz.2M256.build.spiffs_end=0x1FB000
+esp8285.menu.eesz.2M256.build.spiffs_blocksize=4096
+esp8285.menu.eesz.2M512=2MB (FS:512KB OTA:~768KB)
+esp8285.menu.eesz.2M512.build.flash_size=2M
+esp8285.menu.eesz.2M512.build.flash_size_bytes=0x200000
+esp8285.menu.eesz.2M512.build.flash_ld=eagle.flash.2m512.ld
+esp8285.menu.eesz.2M512.build.spiffs_pagesize=256
+esp8285.menu.eesz.2M512.upload.maximum_size=1044464
+esp8285.menu.eesz.2M512.build.rfcal_addr=0x1FC000
+esp8285.menu.eesz.2M512.build.spiffs_start=0x180000
+esp8285.menu.eesz.2M512.build.spiffs_end=0x1FA000
+esp8285.menu.eesz.2M512.build.spiffs_blocksize=8192
+esp8285.menu.eesz.2M1M=2MB (FS:1MB OTA:~512KB)
+esp8285.menu.eesz.2M1M.build.flash_size=2M
+esp8285.menu.eesz.2M1M.build.flash_size_bytes=0x200000
+esp8285.menu.eesz.2M1M.build.flash_ld=eagle.flash.2m1m.ld
+esp8285.menu.eesz.2M1M.build.spiffs_pagesize=256
+esp8285.menu.eesz.2M1M.upload.maximum_size=1044464
+esp8285.menu.eesz.2M1M.build.rfcal_addr=0x1FC000
+esp8285.menu.eesz.2M1M.build.spiffs_start=0x100000
+esp8285.menu.eesz.2M1M.build.spiffs_end=0x1FA000
+esp8285.menu.eesz.2M1M.build.spiffs_blocksize=8192
+esp8285.menu.eesz.2M=2MB (FS:none OTA:~1019KB)
+esp8285.menu.eesz.2M.build.flash_size=2M
+esp8285.menu.eesz.2M.build.flash_size_bytes=0x200000
+esp8285.menu.eesz.2M.build.flash_ld=eagle.flash.2m.ld
+esp8285.menu.eesz.2M.build.spiffs_pagesize=256
+esp8285.menu.eesz.2M.upload.maximum_size=1044464
+esp8285.menu.eesz.2M.build.rfcal_addr=0x1FC000
 esp8285.menu.led.2=2
 esp8285.menu.led.2.build.led=-DLED_BUILTIN=2
 esp8285.menu.led.0=0

package/package_esp8266com_index.template.json

@@ -378,4 +378,4 @@
          ]
       }
    ]
-}
+}

tools/boards.txt.py

@@ -286,7 +286,7 @@
             'crystalfreq_menu',
             'flashmode_dout',
             'flashfreq_40',
-            '1M',
+            '1M', '2M',
             'led',
             ],
         'desc': [ 'ESP8285 (`datasheet <http://www.espressif.com/sites/default/files/0a-esp8285_datasheet_en_v1.0_20160422.pdf>`__) is a multi-chip package which contains ESP8266 and 1MB flash. All points related to bootstrapping resistors and recommended circuits listed above apply to ESP8285 as well.',