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Move uart0-helloworld-sdboot common code to bare-metal and add JTAG loop support #221

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Move uart0-helloworld-sdboot common code to bare-metal and add JTAG loop support #221

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bf0e96f
Makefile: Use lastword function for ld script
paulkocialkowski Apr 16, 2025
5839080
Move bare-metal common support code to dedicated files
paulkocialkowski Apr 16, 2025
9d8f09f
bare-metal: Use anonymous structs in soc_info and expand table
paulkocialkowski Apr 16, 2025
f687a74
bare-metal: Add JTAG pin muxing support
paulkocialkowski Apr 16, 2025
3ef8052
jtag-loop: Use common bare-metal code, adding support for most SoCs
paulkocialkowski Apr 16, 2025
f9efb8d
bare-metal: Add uart0_puthex function
paulkocialkowski Apr 16, 2025
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14 changes: 7 additions & 7 deletions Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -168,22 +168,22 @@ ARM_ELF_FLAGS += -mno-thumb-interwork -fno-stack-protector -fno-toplevel-reorder
ARM_ELF_FLAGS += -Wstrict-prototypes -Wno-format-nonliteral -Wno-format-security

jtag-loop.elf: jtag-loop.c jtag-loop.lds
$(CROSS_CC) -g $(ARM_ELF_FLAGS) $< -nostdlib -o $@ -T jtag-loop.lds -Wl,-N
$(CROSS_CC) -march=armv5te -g $(ARM_ELF_FLAGS) $< -nostdlib -o $@ -T $(lastword $^) -Wl,-N
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@apritzel apritzel Apr 22, 2026 •
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While not wrong, the -march change is a bit surprising here. Can you move that to the but-last patch, that touches that line anyway?


fel-sdboot.elf: fel-sdboot.S fel-sdboot.lds
$(CROSS_CC) -march=armv5te -g $(ARM_ELF_FLAGS) $< -nostdlib -o $@ -T fel-sdboot.lds -Wl,-N
$(CROSS_CC) -march=armv5te -g $(ARM_ELF_FLAGS) $< -nostdlib -o $@ -T $(lastword $^) -Wl,-N

uart0-helloworld-sdboot.elf: uart0-helloworld-sdboot.c uart0-helloworld-sdboot.lds
$(CROSS_CC) -march=armv5te -g $(ARM_ELF_FLAGS) $< -nostdlib -o $@ -T uart0-helloworld-sdboot.lds -Wl,-N
uart0-helloworld-sdboot.elf: uart0-helloworld-sdboot.c bare-metal.c bare-metal.lds
$(CROSS_CC) -march=armv5te -g $(ARM_ELF_FLAGS) $(filter %.c,$^) -nostdlib -o $@ -T $(lastword $^) -Wl,-N

boot_head_sun3i.elf: boot_head.S boot_head.lds
$(CROSS_CC) -g $(ARM_ELF_FLAGS) $< -nostdlib -o $@ -T boot_head.lds -Wl,-N -DMACHID=0x1094
$(CROSS_CC) -g $(ARM_ELF_FLAGS) $< -nostdlib -o $@ -T $(lastword $^) -Wl,-N -DMACHID=0x1094

boot_head_sun4i.elf: boot_head.S boot_head.lds
$(CROSS_CC) -g $(ARM_ELF_FLAGS) $< -nostdlib -o $@ -T boot_head.lds -Wl,-N -DMACHID=0x1008
$(CROSS_CC) -g $(ARM_ELF_FLAGS) $< -nostdlib -o $@ -T $(lastword $^) -Wl,-N -DMACHID=0x1008

boot_head_sun5i.elf: boot_head.S boot_head.lds
$(CROSS_CC) -g $(ARM_ELF_FLAGS) $< -nostdlib -o $@ -T boot_head.lds -Wl,-N -DMACHID=0x102A
$(CROSS_CC) -g $(ARM_ELF_FLAGS) $< -nostdlib -o $@ -T $(lastword $^) -Wl,-N -DMACHID=0x102A

sunxi-bootinfo: bootinfo.c

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