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raspberrypi: allow directly specifying the original boot .S file 

.. all the necessary steps to transform it into a padded, checksummed
file are now done by the build system.

Since it is assigned by "?=", it _should_ be the case that individual
builds can override it.

I did not "test" this per se, but it gives the same content and checksum
(except for the identifying comment with a path) as #4302.
This commit is contained in:
Jeff Epler 2021-03-01 20:54:57 -06:00
parent d0eab5c561
commit 5a00862b1d
2 changed files with 19 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
ports/raspberrypi/Makefile
View File

@ -231,8 +231,9 @@ SRC_SHARED_MODULE_EXPANDED = $(addprefix shared-bindings/, $(SRC_SHARED_MODULE))
SRC_COMMON_HAL_SHARED_MODULE_EXPANDED = $(sort $(SRC_COMMON_HAL_EXPANDED) $(SRC_SHARED_MODULE_EXPANDED))
SRC_S = supervisor/$(CHIP_FAMILY)_cpu.s
SRC_S_UPPER = bs2_default_padded_checksummed.S \
sdk/src/rp2_common/hardware_divider/divider.S \
BOOT2_S_UPPER ?= sdk/src/rp2_common/boot_stage2/boot2_generic_03h.S
BOOT2_S_CFLAGS ?= -DPICO_FLASH_SPI_CLKDIV=2
SRC_S_UPPER = sdk/src/rp2_common/hardware_divider/divider.S \
sdk/src/rp2_common/hardware_irq/irq_handler_chain.S \
sdk/src/rp2_common/pico_bit_ops/bit_ops_aeabi.S \
sdk/src/rp2_common/pico_double/double_aeabi.S \
@ -253,7 +254,23 @@ endif
OBJ += $(addprefix $(BUILD)/, $(SRC_S:.s=.o))
OBJ += $(addprefix $(BUILD)/, $(SRC_S_UPPER:.S=.o))
OBJ += $(addprefix $(BUILD)/, $(SRC_MOD:.c=.o))
OBJ += $(BUILD)/boot2_padded_checksummed.o
$(BUILD)/boot2_padded_checksummed.o: $(BUILD)/boot2_padded_checksummed.S
$(STEPECHO) "CC $<"
$(Q)$(CC) $(CFLAGS) -c -o $@ $<
$(BUILD)/boot2_padded_checksummed.S: $(BUILD)/boot2.bin
$(STEPECHO) "PAD_CHECKSUM $<"
$(Q)$(PYTHON3) sdk/src/rp2_common/boot_stage2/pad_checksum -s 0xffffffff $< $@
$(BUILD)/boot2.bin: $(BUILD)/boot2.elf
$(STEPECHO) "OBJCOPY $<"
$(Q)$(OBJCOPY) -O binary $< $@
$(BUILD)/boot2.elf: $(BOOT2_S_UPPER) | $(BUILD)/
$(STEPECHO) "BOOT $<"
$(Q)$(CC) $(CFLAGS) $(BOOT2_S_CFLAGS) -Isdk/src/rp2_common/boot_stage2/asminclude --specs=nosys.specs -nostartfiles -Wl,-T,sdk/src/rp2_common/boot_stage2/boot_stage2.ld -o $@ $<
SRC_QSTR += $(SRC_C) $(SRC_SUPERVISOR) $(SRC_COMMON_HAL_EXPANDED) $(SRC_SHARED_MODULE_EXPANDED)

23
ports/raspberrypi/bs2_default_padded_checksummed.S
View File

@ -1,23 +0,0 @@
// Padded and checksummed version of: /home/pi/pico/pico-examples/build/pico-sdk/src/rp2_common/boot_stage2/bs2_default.bin
.cpu cortex-m0plus
.thumb
.section .boot2, "ax"
.byte 0x00, 0xb5, 0x32, 0x4b, 0x21, 0x20, 0x58, 0x60, 0x98, 0x68, 0x02, 0x21, 0x88, 0x43, 0x98, 0x60
.byte 0xd8, 0x60, 0x18, 0x61, 0x58, 0x61, 0x2e, 0x4b, 0x00, 0x21, 0x99, 0x60, 0x02, 0x21, 0x59, 0x61
.byte 0x01, 0x21, 0xf0, 0x22, 0x99, 0x50, 0x2b, 0x49, 0x19, 0x60, 0x01, 0x21, 0x99, 0x60, 0x35, 0x20
.byte 0x00, 0xf0, 0x44, 0xf8, 0x02, 0x22, 0x90, 0x42, 0x14, 0xd0, 0x06, 0x21, 0x19, 0x66, 0x00, 0xf0
.byte 0x34, 0xf8, 0x19, 0x6e, 0x01, 0x21, 0x19, 0x66, 0x00, 0x20, 0x18, 0x66, 0x1a, 0x66, 0x00, 0xf0
.byte 0x2c, 0xf8, 0x19, 0x6e, 0x19, 0x6e, 0x19, 0x6e, 0x05, 0x20, 0x00, 0xf0, 0x2f, 0xf8, 0x01, 0x21
.byte 0x08, 0x42, 0xf9, 0xd1, 0x00, 0x21, 0x99, 0x60, 0x1b, 0x49, 0x19, 0x60, 0x00, 0x21, 0x59, 0x60
.byte 0x1a, 0x49, 0x1b, 0x48, 0x01, 0x60, 0x01, 0x21, 0x99, 0x60, 0xeb, 0x21, 0x19, 0x66, 0xa0, 0x21
.byte 0x19, 0x66, 0x00, 0xf0, 0x12, 0xf8, 0x00, 0x21, 0x99, 0x60, 0x16, 0x49, 0x14, 0x48, 0x01, 0x60
.byte 0x01, 0x21, 0x99, 0x60, 0x01, 0xbc, 0x00, 0x28, 0x00, 0xd0, 0x00, 0x47, 0x12, 0x48, 0x13, 0x49
.byte 0x08, 0x60, 0x03, 0xc8, 0x80, 0xf3, 0x08, 0x88, 0x08, 0x47, 0x03, 0xb5, 0x99, 0x6a, 0x04, 0x20
.byte 0x01, 0x42, 0xfb, 0xd0, 0x01, 0x20, 0x01, 0x42, 0xf8, 0xd1, 0x03, 0xbd, 0x02, 0xb5, 0x18, 0x66
.byte 0x18, 0x66, 0xff, 0xf7, 0xf2, 0xff, 0x18, 0x6e, 0x18, 0x6e, 0x02, 0xbd, 0x00, 0x00, 0x02, 0x40
.byte 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x07, 0x00, 0x00, 0x03, 0x5f, 0x00, 0x21, 0x22, 0x00, 0x00
.byte 0xf4, 0x00, 0x00, 0x18, 0x22, 0x20, 0x00, 0xa0, 0x00, 0x01, 0x00, 0x10, 0x08, 0xed, 0x00, 0xe0
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x74, 0xb2, 0x4e, 0x7a