sdcard initial commit - linker errors .got section

.gitmodules

@@ -82,3 +82,6 @@
 [submodule "deps/pythondata-misc-tapcfg"]
 	path = deps/pythondata-misc-tapcfg
 	url = https://github.com/litex-hub/pythondata-misc-tapcfg.git
+[submodule "deps/litesdcard"]
+	path = deps/litesdcard
+	url = https://github.com/enjoy-digital/litesdcard

example-colorlight-i5.py

@@ -94,6 +94,13 @@
         Subsignal("sw_n", Pins("E19"), Misc("PULLMODE=NONE")),
         IOStandard("LVCMOS33")
     ),
+    ("sdcard", 0,
+        Subsignal("data", Pins("J4 H4 E1 E4"), Misc("PULLMODE=UP")),
+        Subsignal("cmd",  Pins("F3"), Misc("PULLMODE=UP")),
+        Subsignal("clk",  Pins("H3")),
+        Subsignal("cd",   Pins("H5")),
+        IOStandard("LVCMOS33"),
+    ),
     # This is pin 27 of the B50612D (top ethernet PHY), which is pretty easy to
     # bodge over to the side of R106 closest to the ECP5 so we get multiboot.
     # I removed R86 so the PHY is disconnected.
@@ -300,6 +307,8 @@ def main():
 
     add_encoder(soc)
 
+    soc.add_sdcard()
+
     soc.add_constant("FLASH_BOOT_ADDRESS", args.flash_boot)
 
     builder = Builder(soc, **parser.builder_argdict)

firmware/build.sh

@@ -31,5 +31,5 @@ cargo build --target=riscv32imac-unknown-none-elf --release
 ${OBJCOPY} target/riscv32imac-unknown-none-elf/release/polyvec_main -O binary $BUILD_DIR/rust-fw.bin
 
 cd $FW_ROOT/polyboot
-cargo build --target=riscv32imac-unknown-none-elf --release
+cargo build --target=riscv32imac-unknown-none-elf -vv --release
 ${OBJCOPY} target/riscv32imac-unknown-none-elf/release/polyboot -O binary $BUILD_DIR/bootloader.bin

firmware/deps/litex-sys/.gitignore

@@ -0,0 +1 @@
+target/*