8a203cf2cb
Rewrite chipid.c so that it contains just the USB and canbus id manipulation code. Move the low-level chipid reading to bootrom.c. Also, introduce a new bootrom_reboot_usb_bootloader() function in bootrom.c so that the main.c code does not need to know the specifics of rebooting into the bootrom. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
// Support for extracting the hardware chip id on rp2040
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//
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// Copyright (C) 2019-2024 Kevin O'Connor <kevin@koconnor.net>
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//
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// This file may be distributed under the terms of the GNU GPLv3 license.
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#include "autoconf.h" // CONFIG_USB_SERIAL_NUMBER_CHIPID
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#include "board/canserial.h" // canserial_set_uuid
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#include "generic/usb_cdc.h" // usb_fill_serial
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#include "generic/usbstd.h" // usb_string_descriptor
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#include "internal.h" // bootrom_read_unique_id
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#include "sched.h" // DECL_INIT
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#define CHIP_UID_LEN 8
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static struct {
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struct usb_string_descriptor desc;
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uint16_t data[CHIP_UID_LEN * 2];
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} cdc_chipid;
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struct usb_string_descriptor *
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usbserial_get_serialid(void)
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{
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return &cdc_chipid.desc;
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}
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void
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chipid_init(void)
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{
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if (!(CONFIG_USB_SERIAL_NUMBER_CHIPID || CONFIG_CANBUS))
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return;
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uint8_t data[CHIP_UID_LEN] = {};
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bootrom_read_unique_id(data, sizeof(data));
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if (CONFIG_USB_SERIAL_NUMBER_CHIPID)
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usb_fill_serial(&cdc_chipid.desc, ARRAY_SIZE(cdc_chipid.data), data);
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if (CONFIG_CANBUS)
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canserial_set_uuid(data, CHIP_UID_LEN);
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}
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DECL_INIT(chipid_init);
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