Remove BOOT2 from RP2350

Not actually used by the ROM any more, so save the few bytes

Author: earlephilhower

boards.txt

@@ -612,7 +612,7 @@ rpipico2.build.f_cpu=125000000
 rpipico2.build.led=
 rpipico2.build.core=rp2040
 rpipico2.build.ldscript=memmap_default.ld
-rpipico2.build.boot2=boot2_generic_03h_2_padded_checksum
+rpipico2.build.boot2=none
 rpipico2.build.usb_manufacturer="Raspberry Pi"
 rpipico2.build.usb_product="Pico 2"
 rpipico2.build.psram_length=0x000000
@@ -840,7 +840,7 @@ rpipico2rv.upload_port.7.pid=0xc10f
 rpipico2rv.build.usbvid=-DUSBD_VID=0x2e8a
 rpipico2rv.build.usbpid=-DUSBD_PID=0x000f
 rpipico2rv.build.usbpwr=-DUSBD_MAX_POWER_MA=250
-rpipico2rv.build.board=RASPBERRY_PI_PICO_2_RISC_V
+rpipico2rv.build.board=RASPBERRY_PI_PICO_2
 rpipico2rv.build.chip=rp2350-riscv
 rpipico2rv.build.toolchain=riscv32-unknown-elf
 rpipico2rv.build.toolchainopts=-march=rv32imac_zicsr_zifencei_zba_zbb_zbs_zbkb -mabi=ilp32
@@ -855,7 +855,7 @@ rpipico2rv.build.f_cpu=125000000
 rpipico2rv.build.led=
 rpipico2rv.build.core=rp2040
 rpipico2rv.build.ldscript=memmap_default.ld
-rpipico2rv.build.boot2=boot2_generic_03h_2_padded_checksum
+rpipico2rv.build.boot2=none
 rpipico2rv.build.usb_manufacturer="Raspberry Pi"
 rpipico2rv.build.usb_product="Pico 2 RISC-V"
 rpipico2rv.build.psram_length=0x000000
@@ -5456,7 +5456,7 @@ adafruit_feather_rp2350_hstx.build.f_cpu=125000000
 adafruit_feather_rp2350_hstx.build.led=
 adafruit_feather_rp2350_hstx.build.core=rp2040
 adafruit_feather_rp2350_hstx.build.ldscript=memmap_default.ld
-adafruit_feather_rp2350_hstx.build.boot2=boot2_w25q080_2_padded_checksum
+adafruit_feather_rp2350_hstx.build.boot2=none
 adafruit_feather_rp2350_hstx.build.usb_manufacturer="Adafruit"
 adafruit_feather_rp2350_hstx.build.usb_product="Feather RP2350 HSTX"
 adafruit_feather_rp2350_hstx.build.psram_length=0x000000
@@ -5652,10 +5652,6 @@ adafruit_feather_rp2350_hstx.menu.ipbtstack.ipv4btcblebig.build.libpicowdefs=-DL
 adafruit_feather_rp2350_hstx.menu.ipbtstack.ipv4ipv6btcblebig=IPv4 + IPv6 + Bluetooth - 32K
 adafruit_feather_rp2350_hstx.menu.ipbtstack.ipv4ipv6btcblebig.build.libpicow=libipv4-ipv6-bt-big.a
 adafruit_feather_rp2350_hstx.menu.ipbtstack.ipv4ipv6btcblebig.build.libpicowdefs=-DLWIP_IPV6=1 -DLWIP_IPV4=1 -DENABLE_CLASSIC=1 -DENABLE_BLE=1 -D__LWIP_MEMMULT=2
-adafruit_feather_rp2350_hstx.menu.boot2.boot2_w25q080_2_padded_checksum=W25Q080 QSPI /2
-adafruit_feather_rp2350_hstx.menu.boot2.boot2_w25q080_2_padded_checksum.build.boot2=boot2_w25q080_2_padded_checksum
-adafruit_feather_rp2350_hstx.menu.boot2.boot2_w25q080_4_padded_checksum=W25Q080 QSPI /4
-adafruit_feather_rp2350_hstx.menu.boot2.boot2_w25q080_4_padded_checksum.build.boot2=boot2_w25q080_4_padded_checksum
 adafruit_feather_rp2350_hstx.menu.uploadmethod.default=Default (UF2)
 adafruit_feather_rp2350_hstx.menu.uploadmethod.default.build.ram_length=512k
 adafruit_feather_rp2350_hstx.menu.uploadmethod.default.build.debugscript=picoprobe_cmsis_dap.tcl
@@ -9317,7 +9313,7 @@ cytron_iriv_io_controller.build.f_cpu=125000000
 cytron_iriv_io_controller.build.led=
 cytron_iriv_io_controller.build.core=rp2040
 cytron_iriv_io_controller.build.ldscript=memmap_default.ld
-cytron_iriv_io_controller.build.boot2=boot2_w25q080_2_padded_checksum
+cytron_iriv_io_controller.build.boot2=none
 cytron_iriv_io_controller.build.usb_manufacturer="Cytron"
 cytron_iriv_io_controller.build.usb_product="IRIV IO Controller"
 cytron_iriv_io_controller.build.psram_length=0x000000
@@ -10230,7 +10226,7 @@ cytron_motion_2350_pro.build.f_cpu=125000000
 cytron_motion_2350_pro.build.led=
 cytron_motion_2350_pro.build.core=rp2040
 cytron_motion_2350_pro.build.ldscript=memmap_default.ld
-cytron_motion_2350_pro.build.boot2=boot2_generic_03h_2_padded_checksum
+cytron_motion_2350_pro.build.boot2=none
 cytron_motion_2350_pro.build.usb_manufacturer="Cytron"
 cytron_motion_2350_pro.build.usb_product="Motion 2350 Pro"
 cytron_motion_2350_pro.build.psram_length=0x000000
@@ -16035,7 +16031,7 @@ challenger_2350_wifi6_ble5.build.f_cpu=125000000
 challenger_2350_wifi6_ble5.build.led=
 challenger_2350_wifi6_ble5.build.core=rp2040
 challenger_2350_wifi6_ble5.build.ldscript=memmap_default.ld
-challenger_2350_wifi6_ble5.build.boot2=boot2_generic_03h_2_padded_checksum
+challenger_2350_wifi6_ble5.build.boot2=none
 challenger_2350_wifi6_ble5.build.usb_manufacturer="iLabs"
 challenger_2350_wifi6_ble5.build.usb_product="Challenger 2350 WiFi/BLE"
 challenger_2350_wifi6_ble5.build.psram_length=0x800000
@@ -16407,7 +16403,7 @@ challenger_2350_bconnect.build.f_cpu=125000000
 challenger_2350_bconnect.build.led=
 challenger_2350_bconnect.build.core=rp2040
 challenger_2350_bconnect.build.ldscript=memmap_default.ld
-challenger_2350_bconnect.build.boot2=boot2_generic_03h_2_padded_checksum
+challenger_2350_bconnect.build.boot2=none
 challenger_2350_bconnect.build.usb_manufacturer="iLabs"
 challenger_2350_bconnect.build.usb_product="Challenger 2350 BConnect"
 challenger_2350_bconnect.build.psram_length=0x800000
@@ -19085,7 +19081,7 @@ pimoroni_pga2350.build.f_cpu=125000000
 pimoroni_pga2350.build.led=
 pimoroni_pga2350.build.core=rp2040
 pimoroni_pga2350.build.ldscript=memmap_default.ld
-pimoroni_pga2350.build.boot2=boot2_w25q080_4_padded_checksum
+pimoroni_pga2350.build.boot2=none
 pimoroni_pga2350.build.usb_manufacturer="Pimoroni"
 pimoroni_pga2350.build.usb_product="PGA2350"
 pimoroni_pga2350.build.psram_length=0x800000
@@ -19412,7 +19408,7 @@ pimoroni_pico_plus_2.build.f_cpu=125000000
 pimoroni_pico_plus_2.build.led=
 pimoroni_pico_plus_2.build.core=rp2040
 pimoroni_pico_plus_2.build.ldscript=memmap_default.ld
-pimoroni_pico_plus_2.build.boot2=boot2_generic_03h_4_padded_checksum
+pimoroni_pico_plus_2.build.boot2=none
 pimoroni_pico_plus_2.build.usb_manufacturer="Pimoroni"
 pimoroni_pico_plus_2.build.usb_product="PicoPlus2"
 pimoroni_pico_plus_2.build.psram_length=0x800000
@@ -20223,7 +20219,7 @@ pimoroni_tiny2350.build.f_cpu=125000000
 pimoroni_tiny2350.build.led=
 pimoroni_tiny2350.build.core=rp2040
 pimoroni_tiny2350.build.ldscript=memmap_default.ld
-pimoroni_tiny2350.build.boot2=boot2_w25q080_4_padded_checksum
+pimoroni_tiny2350.build.boot2=none
 pimoroni_tiny2350.build.usb_manufacturer="Pimoroni"
 pimoroni_tiny2350.build.usb_product="Tiny2350"
 pimoroni_tiny2350.build.psram_length=0x000000
@@ -22214,7 +22210,7 @@ solderparty_rp2350_stamp.build.f_cpu=125000000
 solderparty_rp2350_stamp.build.led=
 solderparty_rp2350_stamp.build.core=rp2040
 solderparty_rp2350_stamp.build.ldscript=memmap_default.ld
-solderparty_rp2350_stamp.build.boot2=boot2_generic_03h_2_padded_checksum
+solderparty_rp2350_stamp.build.boot2=none
 solderparty_rp2350_stamp.build.usb_manufacturer="Solder Party"
 solderparty_rp2350_stamp.build.usb_product="RP2350 Stamp"
 solderparty_rp2350_stamp.build.psram_length=0x000000
@@ -22517,7 +22513,7 @@ solderparty_rp2350_stamp_xl.build.f_cpu=125000000
 solderparty_rp2350_stamp_xl.build.led=
 solderparty_rp2350_stamp_xl.build.core=rp2040
 solderparty_rp2350_stamp_xl.build.ldscript=memmap_default.ld
-solderparty_rp2350_stamp_xl.build.boot2=boot2_generic_03h_2_padded_checksum
+solderparty_rp2350_stamp_xl.build.boot2=none
 solderparty_rp2350_stamp_xl.build.usb_manufacturer="Solder Party"
 solderparty_rp2350_stamp_xl.build.usb_product="RP2350 Stamp XL"
 solderparty_rp2350_stamp_xl.build.psram_length=0x000000
@@ -23496,7 +23492,7 @@ sparkfun_promicrorp2350.build.f_cpu=125000000
 sparkfun_promicrorp2350.build.led=
 sparkfun_promicrorp2350.build.core=rp2040
 sparkfun_promicrorp2350.build.ldscript=memmap_default.ld
-sparkfun_promicrorp2350.build.boot2=boot2_w25q080_2_padded_checksum
+sparkfun_promicrorp2350.build.boot2=none
 sparkfun_promicrorp2350.build.usb_manufacturer="SparkFun"
 sparkfun_promicrorp2350.build.usb_product="ProMicro RP2350"
 sparkfun_promicrorp2350.build.psram_length=0x800000
@@ -28389,7 +28385,7 @@ generic_rp2350.build.f_cpu=125000000
 generic_rp2350.build.led=
 generic_rp2350.build.core=rp2040
 generic_rp2350.build.ldscript=memmap_default.ld
-generic_rp2350.build.boot2=boot2_generic_03h_4_padded_checksum
+generic_rp2350.build.boot2=none
 generic_rp2350.build.usb_manufacturer="Generic"
 generic_rp2350.build.usb_product="RP2350"
 generic_rp2350.menu.flash.2097152_0=2MB (no FS)

boot2/rp2350-riscv/boot2_generic_03h_2_padded_checksum.S

@@ -0,0 +1,4 @@
+.section .boot2, "ax"
+
+.global __boot2_entry_point
+__boot2_entry_point: