WIP

Makefile

@@ -41,6 +41,7 @@ BINS := \
 	$(OUT)/os_sifive_u32 \
 	$(OUT)/os_hifive1_revb \
 	$(OUT)/os_ox64 \
+	$(OUT)/os_star64 \
 	$(OUT)/os_d1 \
 	$(OUT)/os_virt
 
@@ -113,6 +114,8 @@ OS_VIRT_DEPS = $(BASE_DEPS) \
 	src/vm.c
 OS_OX64_DEPS = $(BASE_DEPS) \
 			src/machine/ox64/timer.c src/drivers/uart/uart-ox64.c
+OS_STAR64_DEPS = $(BASE_DEPS) \
+			src/machine/star64/timer.c src/drivers/uart/uart-star64.c
 OS_D1_DEPS = $(BASE_DEPS) \
 			src/machine/d1/timer.c src/drivers/uart/uart-d1.c
 
@@ -206,6 +209,18 @@ $(OUT)/os_ox64.bin: $(OUT)/os_ox64
 $(OUT)/os_ox64.s: $(OUT)/os_ox64
 	$(RISCV64_OBJDUMP) --source --all-headers --demangle --line-numbers --wide -D $< > $@
 
+$(OUT)/os_star64: ${OS_STAR64_DEPS}
+	$(RISCV64_GCC) -march=rv64g -mabi=lp64 $(GCC_FLAGS) \
+		-Wl,--defsym,RAM_START=0x80200000 -g \
+		-include include/machine/star64.h \
+		${OS_STAR64_DEPS} -o $@
+
+$(OUT)/os_star64.bin: $(OUT)/os_star64
+	$(RISCV64_OBJCOPY) -O binary $< $@
+
+$(OUT)/os_star64.s: $(OUT)/os_star64
+	$(RISCV64_OBJDUMP) --source --all-headers --demangle --line-numbers --wide -D $< > $@
+
 $(OUT)/os_d1: ${OS_D1_DEPS}
 	$(RISCV64_GCC) -march=rv64g -mabi=lp64 $(GCC_FLAGS) \
 		-Wl,--defsym,RAM_START=0x40200000 -g \

docs/star64-boot.md

@@ -0,0 +1,25 @@
+# Booting Pine64 Star64
+
+### Connecting
+
+TODO
+
+### Regular boot
+
+1. Run picocom with gkermit (`scripts/star64-term.sh` does that)
+1. Interrupt U-Boot into its shell
+    * i.e. hit any key when it does the countdown: `Hit any key to stop autoboot:  2`
+1. Run `loadb <address> <baud>` in U-Boot shell:
+    * `loadb 80200000 115200`
+1. When it says `Ready for binary (kermit) download to 0x80200000 at 115200 bps...`,
+   hit Ctrl-A, Ctrl-S to get it to prompt for a file, then type out the file name:
+    * `*** file: out/os_d1.bin`
+1. When done loading, it will get back to U-Boot prompt, it’s time to boot:
+    * `booti 0x80200000 - fffc6aa0
+
+Commands repeated here for more convenient copy-pasting:
+```
+loadb 80200000 115200
+out/os_star64.bin
+booti 0x80200000 - fffc6aa0
+```