rp2040: unify all linker scripts using LDFLAGS

The only thing that's different between all these chips is the flash
size, which can easily be passed as a linker flag instead. This removes
a bunch of duplicate code in an uncommon language (linker script).

I've also fixed a few boards with incorrect flash sizes:

  * nano-rp2040 has 16MB instead of 2MB
  * macropad-rp2040 has 8MB instead of 2MB
  * gopher-badge has 8MB instead of 1MB

26 files changed, 50 insertions, 114 deletions

diff --git a/targets/badger2040.json b/targets/badger2040.json
index d325bd067..34eef117b 100644
--- a/targets/badger2040.json
+++ b/targets/badger2040.json
@@ -4,7 +4,9 @@
     ],
     "serial-port": ["2e8a:0003"],
     "build-tags": ["badger2040"],
-    "linkerscript": "targets/badger2040.ld",
+    "ldflags": [
+        "--defsym=__flash_size=1020K"
+    ],
     "extra-files": [
         "targets/pico-boot-stage2.S"
     ]
diff --git a/targets/badger2040.ld b/targets/badger2040.ld
deleted file mode 100644
index 7e06d7a0a..000000000
--- a/targets/badger2040.ld
+++ /dev/null
@@ -1,10 +0,0 @@
-
-MEMORY
-{
-    /* Reserve exactly 256 bytes at start of flash for second stage bootloader */
-    BOOT2_TEXT (rx) : ORIGIN = 0x10000000, LENGTH = 256
-    FLASH_TEXT (rx) : ORIGIN = 0x10000000 + 256, LENGTH = 1020K - 256
-    RAM (rwx)       : ORIGIN = 0x20000000, LENGTH = 256k
-}
-
-INCLUDE "targets/rp2040.ld"
diff --git a/targets/challenger-rp2040.json b/targets/challenger-rp2040.json
index 28591db28..6d187e777 100644
--- a/targets/challenger-rp2040.json
+++ b/targets/challenger-rp2040.json
@@ -4,7 +4,9 @@
     ],
     "serial-port": ["2e8a:1023"],
     "build-tags": ["challenger_rp2040"],
-    "linkerscript": "targets/feather-rp2040.ld",
+    "ldflags": [
+        "--defsym=__flash_size=8M"
+    ],
     "extra-files": [
         "targets/feather-rp2040-boot-stage2.S"
     ]
diff --git a/targets/feather-rp2040.json b/targets/feather-rp2040.json
index 5409f89b3..871cdb45f 100644
--- a/targets/feather-rp2040.json
+++ b/targets/feather-rp2040.json
@@ -4,7 +4,9 @@
     ],
     "serial-port": ["239a:80f1"],
     "build-tags": ["feather_rp2040"],
-    "linkerscript": "targets/feather-rp2040.ld",
+    "ldflags": [
+        "--defsym=__flash_size=8192K"
+    ],
     "extra-files": [
         "targets/feather-rp2040-boot-stage2.S"
     ]
diff --git a/targets/feather-rp2040.ld b/targets/feather-rp2040.ld
deleted file mode 100644
index d97942f5c..000000000
--- a/targets/feather-rp2040.ld
+++ /dev/null
@@ -1,10 +0,0 @@
-
-MEMORY
-{
-    /* Reserve exactly 256 bytes at start of flash for second stage bootloader */
-    BOOT2_TEXT (rx) : ORIGIN = 0x10000000, LENGTH = 256
-    FLASH_TEXT (rx) : ORIGIN = 0x10000000 + 256, LENGTH = 8192K - 256
-    RAM (rwx)       : ORIGIN = 0x20000000, LENGTH = 256k
-}
-
-INCLUDE "targets/rp2040.ld"
\ No newline at end of file
diff --git a/targets/gopher-badge.json b/targets/gopher-badge.json
index 8bf4f0c92..ec50b303c 100644
--- a/targets/gopher-badge.json
+++ b/targets/gopher-badge.json
@@ -4,7 +4,9 @@
     ],
     "serial-port": ["2e8a:0003"],
     "build-tags": ["gopher_badge"],
-    "linkerscript": "targets/gopher-badge.ld",
+    "ldflags": [
+        "--defsym=__flash_size=8M"
+    ],
     "extra-files": [
         "targets/pico-boot-stage2.S"
     ]
diff --git a/targets/gopher-badge.ld b/targets/gopher-badge.ld
deleted file mode 100644
index 7e06d7a0a..000000000
--- a/targets/gopher-badge.ld
+++ /dev/null
@@ -1,10 +0,0 @@
-
-MEMORY
-{
-    /* Reserve exactly 256 bytes at start of flash for second stage bootloader */
-    BOOT2_TEXT (rx) : ORIGIN = 0x10000000, LENGTH = 256
-    FLASH_TEXT (rx) : ORIGIN = 0x10000000 + 256, LENGTH = 1020K - 256
-    RAM (rwx)       : ORIGIN = 0x20000000, LENGTH = 256k
-}
-
-INCLUDE "targets/rp2040.ld"
diff --git a/targets/kb2040.json b/targets/kb2040.json
index ce9360f50..1fc045b52 100644
--- a/targets/kb2040.json
+++ b/targets/kb2040.json
@@ -4,7 +4,9 @@
     ],
     "serial-port": ["239a:8106"],
     "build-tags": ["kb2040"],
-    "linkerscript": "targets/qtpy-rp2040.ld",
+    "ldflags": [
+        "--defsym=__flash_size=8192K"
+    ],
     "extra-files": [
         "targets/qtpy-rp2040-boot-stage2.S"
     ]
diff --git a/targets/macropad-rp2040.json b/targets/macropad-rp2040.json
index 027657bd7..59db5b2ad 100644
--- a/targets/macropad-rp2040.json
+++ b/targets/macropad-rp2040.json
@@ -4,7 +4,9 @@
     ],
     "build-tags": ["macropad_rp2040"],
     "serial-port": ["239a:8107"],
-    "linkerscript": "targets/pico.ld",
+    "ldflags": [
+        "--defsym=__flash_size=8M"
+    ],
     "extra-files": [
         "targets/macropad-rp2040-boot-stage2.S"
     ]
diff --git a/targets/nano-rp2040.json b/targets/nano-rp2040.json
index f1623dfe8..313fead9c 100644
--- a/targets/nano-rp2040.json
+++ b/targets/nano-rp2040.json
@@ -4,7 +4,9 @@
     ],
     "serial-port": ["2341:005e"],
     "build-tags": ["nano_rp2040"],
-    "linkerscript": "targets/pico.ld",
+    "ldflags": [
+        "--defsym=__flash_size=16M"
+    ],
     "extra-files": [
         "targets/pico-boot-stage2.S"
     ]
diff --git a/targets/pico.json b/targets/pico.json
index 984b92879..88aec23d0 100644
--- a/targets/pico.json
+++ b/targets/pico.json
@@ -4,7 +4,9 @@
     ],
     "build-tags": ["pico"],
     "serial-port": ["2e8a:000A"],
-    "linkerscript": "targets/pico.ld",
+    "ldflags": [
+        "--defsym=__flash_size=2048K"
+    ],
     "extra-files": [
         "targets/pico-boot-stage2.S"
     ]
diff --git a/targets/pico.ld b/targets/pico.ld
deleted file mode 100644
index 6ef32a3cb..000000000
--- a/targets/pico.ld
+++ /dev/null
@@ -1,10 +0,0 @@
-
-MEMORY
-{
-    /* Reserve exactly 256 bytes at start of flash for second stage bootloader */
-    BOOT2_TEXT (rx) : ORIGIN = 0x10000000, LENGTH = 256
-    FLASH_TEXT (rx) : ORIGIN = 0x10000000 + 256, LENGTH = 2048K - 256
-    RAM (rwx)       : ORIGIN = 0x20000000, LENGTH = 256k
-}
-
-INCLUDE "targets/rp2040.ld"
diff --git a/targets/qtpy-rp2040.json b/targets/qtpy-rp2040.json
index 0a53accc2..394d83aa6 100644
--- a/targets/qtpy-rp2040.json
+++ b/targets/qtpy-rp2040.json
@@ -4,7 +4,9 @@
     ],
     "serial-port": ["239a:80f7"],
     "build-tags": ["qtpy_rp2040"],
-    "linkerscript": "targets/qtpy-rp2040.ld",
+    "ldflags": [
+        "--defsym=__flash_size=8192K"
+    ],
     "extra-files": [
         "targets/qtpy-rp2040-boot-stage2.S"
     ]
diff --git a/targets/qtpy-rp2040.ld b/targets/qtpy-rp2040.ld
deleted file mode 100644
index d97942f5c..000000000
--- a/targets/qtpy-rp2040.ld
+++ /dev/null
@@ -1,10 +0,0 @@
-
-MEMORY
-{
-    /* Reserve exactly 256 bytes at start of flash for second stage bootloader */
-    BOOT2_TEXT (rx) : ORIGIN = 0x10000000, LENGTH = 256
-    FLASH_TEXT (rx) : ORIGIN = 0x10000000 + 256, LENGTH = 8192K - 256
-    RAM (rwx)       : ORIGIN = 0x20000000, LENGTH = 256k
-}
-
-INCLUDE "targets/rp2040.ld"
\ No newline at end of file
diff --git a/targets/rp2040.json b/targets/rp2040.json
index f4dc8c044..99a568a79 100644
--- a/targets/rp2040.json
+++ b/targets/rp2040.json
@@ -12,6 +12,7 @@
     "extra-files": [
         "src/device/rp/rp2040.s"
     ],
+    "linkerscript": "targets/rp2040.ld",
     "openocd-interface": "picoprobe",
     "openocd-transport": "swd",
     "openocd-target": "rp2040"
diff --git a/targets/rp2040.ld b/targets/rp2040.ld
index 5aa57ce69..118735e30 100644
--- a/targets/rp2040.ld
+++ b/targets/rp2040.ld
@@ -1,3 +1,10 @@
+MEMORY
+{
+    /* Reserve exactly 256 bytes at start of flash for second stage bootloader */
+    BOOT2_TEXT (rx) : ORIGIN = 0x10000000, LENGTH = 256
+    FLASH_TEXT (rx) : ORIGIN = 0x10000000 + 256, LENGTH = __flash_size - 256
+    RAM (rwx)       : ORIGIN = 0x20000000, LENGTH = 256k
+}
 
 _stack_size = 2K;
 
diff --git a/targets/thingplus-rp2040.json b/targets/thingplus-rp2040.json
index dfd71ad30..6718b86d2 100644
--- a/targets/thingplus-rp2040.json
+++ b/targets/thingplus-rp2040.json
@@ -4,7 +4,9 @@
     ],
     "serial-port": ["1b4f:0026"],
     "build-tags": ["thingplus_rp2040"],
-    "linkerscript": "targets/thingplus-rp2040.ld",
+    "ldflags": [
+        "--defsym=__flash_size=16M"
+    ],
     "extra-files": [
         "targets/pico-boot-stage2.S"
     ]
diff --git a/targets/thingplus-rp2040.ld b/targets/thingplus-rp2040.ld
deleted file mode 100644
index 5e49f3b83..000000000
--- a/targets/thingplus-rp2040.ld
+++ /dev/null
@@ -1,10 +0,0 @@
-
-MEMORY
-{
-    /* Reserve exactly 256 bytes at start of flash for second stage bootloader */
-    BOOT2_TEXT (rx) : ORIGIN = 0x10000000, LENGTH = 256
-    FLASH_TEXT (rx) : ORIGIN = 0x10000000 + 256, LENGTH = 16384K - 256
-    RAM (rwx)       : ORIGIN = 0x20000000, LENGTH = 256k
-}
-
-INCLUDE "targets/rp2040.ld"
\ No newline at end of file
diff --git a/targets/trinkey-qt2040.json b/targets/trinkey-qt2040.json
index 3678085d7..23ae3f6c5 100644
--- a/targets/trinkey-qt2040.json
+++ b/targets/trinkey-qt2040.json
@@ -4,7 +4,9 @@
     ],
     "serial-port": ["239a:8109"],
     "build-tags": ["trinkey_qt2040"],
-    "linkerscript": "targets/trinkey-qt2040.ld",
+    "ldflags": [
+        "--defsym=__flash_size=8192K"
+    ],
     "extra-files": [
         "targets/trinkey-qt2040-boot-stage2.S"
     ]
diff --git a/targets/trinkey-qt2040.ld b/targets/trinkey-qt2040.ld
deleted file mode 100644
index d97942f5c..000000000
--- a/targets/trinkey-qt2040.ld
+++ /dev/null
@@ -1,10 +0,0 @@
-
-MEMORY
-{
-    /* Reserve exactly 256 bytes at start of flash for second stage bootloader */
-    BOOT2_TEXT (rx) : ORIGIN = 0x10000000, LENGTH = 256
-    FLASH_TEXT (rx) : ORIGIN = 0x10000000 + 256, LENGTH = 8192K - 256
-    RAM (rwx)       : ORIGIN = 0x20000000, LENGTH = 256k
-}
-
-INCLUDE "targets/rp2040.ld"
\ No newline at end of file
diff --git a/targets/tufty2040.json b/targets/tufty2040.json
index 5534e4be9..11c4e334e 100644
--- a/targets/tufty2040.json
+++ b/targets/tufty2040.json
@@ -4,7 +4,9 @@
     ],
     "serial-port": ["2e8a:0003"],
     "build-tags": ["tufty2040"],
-    "linkerscript": "targets/tufty2040.ld",
+    "ldflags": [
+        "--defsym=__flash_size=1020K"
+    ],
     "extra-files": [
         "targets/pico-boot-stage2.S"
     ]
diff --git a/targets/tufty2040.ld b/targets/tufty2040.ld
deleted file mode 100644
index 7e06d7a0a..000000000
--- a/targets/tufty2040.ld
+++ /dev/null
@@ -1,10 +0,0 @@
-
-MEMORY
-{
-    /* Reserve exactly 256 bytes at start of flash for second stage bootloader */
-    BOOT2_TEXT (rx) : ORIGIN = 0x10000000, LENGTH = 256
-    FLASH_TEXT (rx) : ORIGIN = 0x10000000 + 256, LENGTH = 1020K - 256
-    RAM (rwx)       : ORIGIN = 0x20000000, LENGTH = 256k
-}
-
-INCLUDE "targets/rp2040.ld"
diff --git a/targets/waveshare-rp2040-zero.json b/targets/waveshare-rp2040-zero.json
index 878969afa..a31c4e844 100644
--- a/targets/waveshare-rp2040-zero.json
+++ b/targets/waveshare-rp2040-zero.json
@@ -4,7 +4,9 @@
     ],
     "serial-port": ["2e8a:0003"],
     "build-tags": ["waveshare_rp2040_zero"],
-    "linkerscript": "targets/waveshare-rp2040-zero.ld",
+    "ldflags": [
+        "--defsym=__flash_size=1020K"
+    ],
     "extra-files": [
         "targets/pico-boot-stage2.S"
     ]
diff --git a/targets/waveshare-rp2040-zero.ld b/targets/waveshare-rp2040-zero.ld
deleted file mode 100644
index 7e06d7a0a..000000000
--- a/targets/waveshare-rp2040-zero.ld
+++ /dev/null
@@ -1,10 +0,0 @@
-
-MEMORY
-{
-    /* Reserve exactly 256 bytes at start of flash for second stage bootloader */
-    BOOT2_TEXT (rx) : ORIGIN = 0x10000000, LENGTH = 256
-    FLASH_TEXT (rx) : ORIGIN = 0x10000000 + 256, LENGTH = 1020K - 256
-    RAM (rwx)       : ORIGIN = 0x20000000, LENGTH = 256k
-}
-
-INCLUDE "targets/rp2040.ld"
diff --git a/targets/xiao-rp2040.json b/targets/xiao-rp2040.json
index ce967ad0e..02a36c06a 100644
--- a/targets/xiao-rp2040.json
+++ b/targets/xiao-rp2040.json
@@ -4,7 +4,9 @@
     ],
     "serial-port": ["2e8a:000a"],
     "build-tags": ["xiao_rp2040"],
-    "linkerscript": "targets/xiao-rp2040.ld",
+    "ldflags": [
+        "--defsym=__flash_size=1020K"
+    ],
     "extra-files": [
         "targets/pico-boot-stage2.S"
     ]
diff --git a/targets/xiao-rp2040.ld b/targets/xiao-rp2040.ld
deleted file mode 100644
index 7e06d7a0a..000000000
--- a/targets/xiao-rp2040.ld
+++ /dev/null
@@ -1,10 +0,0 @@
-
-MEMORY
-{
-    /* Reserve exactly 256 bytes at start of flash for second stage bootloader */
-    BOOT2_TEXT (rx) : ORIGIN = 0x10000000, LENGTH = 256
-    FLASH_TEXT (rx) : ORIGIN = 0x10000000 + 256, LENGTH = 1020K - 256
-    RAM (rwx)       : ORIGIN = 0x20000000, LENGTH = 256k
-}
-
-INCLUDE "targets/rp2040.ld"