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boot2: add F4

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kicer
2025-12-21 22:56:35 +08:00
parent 25827666f0
commit c0ade721c5
3 changed files with 16 additions and 3 deletions
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8
Makefile
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@@ -42,7 +42,7 @@ CFLAGS += --stack-auto --noinduction --use-non-free
LDFLAGS = -m$(ARCH) -l$(ARCH) --out-fmt-ihx LDFLAGS = -m$(ARCH) -l$(ARCH) --out-fmt-ihx
OPTION_BOOT := 0x480D OPTION_BOOT := 0x480D
RAM_BOOT := 0x023E RAM_BOOT := 0x0232
OPTFLAGS = -Wl-bOPTION=0x4800 -Wl-bOPTION_BOOT=$(OPTION_BOOT) OPTFLAGS = -Wl-bOPTION=0x4800 -Wl-bOPTION_BOOT=$(OPTION_BOOT)
B2FLAGS = -Wl-bRAM_BOOT=$(RAM_BOOT) B2FLAGS = -Wl-bRAM_BOOT=$(RAM_BOOT)
@@ -130,8 +130,10 @@ boot2: $(SCRIPTS_DIR)/boot2.s | $(BUILD_DIR)
@B2SIZE=$$(wc -c < $(SCRIPTS_DIR)/boot2.bin); \ @B2SIZE=$$(wc -c < $(SCRIPTS_DIR)/boot2.bin); \
SIZE1K=$$(($$B2SIZE+$(RAM_BOOT)+(0x4840-$(OPTION_BOOT)-3))); \ SIZE1K=$$(($$B2SIZE+$(RAM_BOOT)+(0x4840-$(OPTION_BOOT)-3))); \
if [ $$SIZE1K -ne 1024 ]; then \ if [ $$SIZE1K -ne 1024 ]; then \
echo ""; \ echo ""; \
echo "!!! boot2 ram address error!!! $(RAM_BOOT)"; \ echo "!!! boot2 ram address error!!!"; \
NEW_RAM_BOOT=$$((1024-$$SIZE1K+$(RAM_BOOT))); \
echo " RAM_BOOT: $(RAM_BOOT) -> 0x$$(printf "%X" $$NEW_RAM_BOOT)"; \
fi fi
# Show sizes of generated binaries # Show sizes of generated binaries

BIN
scripts/boot2.bin
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Binary file not shown.

11
scripts/boot2.s
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@@ -30,6 +30,7 @@ WWDG_CR = 0x50D1 ; WWDG control register
CMD_READ = 0xF1 ; 读内存命令 CMD_READ = 0xF1 ; 读内存命令
CMD_WRITE = 0xF2 ; 写内存命令 CMD_WRITE = 0xF2 ; 写内存命令
CMD_GO = 0xF3 ; 跳转执行命令 CMD_GO = 0xF3 ; 跳转执行命令
CMD_EXEC = 0xF4 ; 直接执行机器码命令
CMD_HEADER = 0x5A ; 帧头 CMD_HEADER = 0x5A ; 帧头
ACK_HEADER = 0xA5 ; 应答帧头 ACK_HEADER = 0xA5 ; 应答帧头
@@ -90,6 +91,9 @@ _main_loop:
cp A, #CMD_GO cp A, #CMD_GO
jreq _cmd_go jreq _cmd_go
cp A, #CMD_EXEC
jreq _cmd_exec
_invalid_cmd_error: _invalid_cmd_error:
; 未知命令，发送错误响应 ; 未知命令，发送错误响应
mov tx_state, #ERR_INVCMD mov tx_state, #ERR_INVCMD
@@ -118,6 +122,13 @@ _cmd_go:
jp (X) jp (X)
; 注意: jump_to_address 不返回 ; 注意: jump_to_address 不返回
_cmd_exec:
; 直接执行收到的机器码
ld A, #0x81 ; ret code
ld (X), A ; X point to checksum already
call rx_buffer
jra _main_loop
receive_frame: receive_frame:
; 初始化接收状态 ; 初始化接收状态
clr rx_state clr rx_state