/* * Copyright (c) 2020 Raspberry Pi (Trading) Ltd. * * SPDX-License-Identifier: BSD-3-Clause */ #include #include #include #include #include "picoboot_connection.h" #include "boot/bootrom_constants.h" #include "pico/stdio_usb/reset_interface.h" #if ENABLE_DEBUG_LOG #include #define output(...) printf(__VA_ARGS__) #else #define output(format,...) ((void)0) #endif static bool verbose; static bool definitely_exclusive; static enum { XIP_UNKOWN, XIP_ACTIVE, XIP_INACTIVE, } xip_state; // todo test sparse binary (well actually two range is this) uint32_t crc32_for_byte(uint32_t remainder) { const uint32_t POLYNOMIAL = 0x4C11DB7; remainder <<= 24u; for (unsigned int bit = 8; bit > 0; bit--) { if (remainder & 0x80000000) remainder = (remainder << 1) ^ POLYNOMIAL; else remainder = (remainder << 1); } return remainder; } uint32_t crc32_sw(const uint8_t *buf, unsigned int count, uint32_t crc) { static uint32_t table[0x100]; if (!table[1]) { for (unsigned int i = 0; i < count_of(table); i++) { table[i] = crc32_for_byte(i); } } for (unsigned int i = 0; i < count; ++i) { crc = (crc << 8u) ^ table[(uint8_t) ((crc >> 24u) ^ buf[i])]; } return crc; } unsigned int interface; unsigned int out_ep; unsigned int in_ep; enum picoboot_device_result picoboot_open_device(libusb_device *device, libusb_device_handle **dev_handle, model_t *model, int vid, int pid, const char* ser) { struct libusb_device_descriptor desc; struct libusb_config_descriptor *config; definitely_exclusive = false; *dev_handle = NULL; *model = unknown; int ret = libusb_get_device_descriptor(device, &desc); enum picoboot_device_result res = dr_vidpid_unknown; if (ret && verbose) { output("Failed to read device descriptor\n"); } if (!ret) { if (pid >= 0) { bool match_vid = (vid < 0 ? VENDOR_ID_RASPBERRY_PI : (unsigned int)vid) == desc.idVendor; bool match_pid = pid == desc.idProduct; if (!(match_vid && match_pid)) { return dr_vidpid_unknown; } } else if (vid != 0) { // ignore vid/pid filtering if no pid and vid == 0 if (desc.idVendor != (vid < 0 ? VENDOR_ID_RASPBERRY_PI : (unsigned int)vid)) { return dr_vidpid_unknown; } switch (desc.idProduct) { case PRODUCT_ID_MICROPYTHON: return dr_vidpid_micropython; case PRODUCT_ID_PICOPROBE: return dr_vidpid_picoprobe; case PRODUCT_ID_RP2040_STDIO_USB: *model = rp2040; res = dr_vidpid_stdio_usb; break; case PRODUCT_ID_STDIO_USB: *model = rp2350; res = dr_vidpid_stdio_usb; break; case PRODUCT_ID_RP2040_USBBOOT: *model = rp2040; break; case PRODUCT_ID_RP2350_USBBOOT: *model = rp2350; break; default: return dr_vidpid_unknown; } } ret = libusb_get_active_config_descriptor(device, &config); if (ret && verbose) { output("Failed to read config descriptor\n"); } } if (!ret) { ret = libusb_open(device, dev_handle); if (ret && verbose) { output("Failed to open device %d\n", ret); } if (ret) { if (vid == 0 || strlen(ser) != 0) { // didn't check vid or ser, so treat as unknown return dr_vidpid_unknown; } else if (res == dr_vidpid_stdio_usb) { return dr_vidpid_stdio_usb_cant_connect; } else { return dr_vidpid_bootrom_cant_connect; } } } if (!ret && res == dr_vidpid_stdio_usb) { if (strlen(ser) != 0) { // Check USB serial number char ser_str[128]; libusb_get_string_descriptor_ascii(*dev_handle, desc.iSerialNumber, (unsigned char*)ser_str, sizeof(ser_str)); if (strcmp(ser, ser_str)) { return dr_vidpid_unknown; } else { return res; } } else { return res; } } // Runtime reset interface with thirdparty VID if (!ret) { for (int i = 0; i < config->bNumInterfaces; i++) { if (config->interface[i].altsetting[0].bInterfaceClass == 0xff && config->interface[i].altsetting[0].bInterfaceSubClass == RESET_INTERFACE_SUBCLASS && config->interface[i].altsetting[0].bInterfaceProtocol == RESET_INTERFACE_PROTOCOL) { return dr_vidpid_stdio_usb; } } } if (!ret) { if (config->bNumInterfaces == 1) { interface = 0; } else { interface = 1; } if (config->interface[interface].altsetting[0].bInterfaceClass == 0xff && config->interface[interface].altsetting[0].bNumEndpoints == 2) { out_ep = config->interface[interface].altsetting[0].endpoint[0].bEndpointAddress; in_ep = config->interface[interface].altsetting[0].endpoint[1].bEndpointAddress; } if (out_ep && in_ep && !(out_ep & 0x80u) && (in_ep & 0x80u)) { if (verbose) output("Found PICOBOOT interface\n"); ret = libusb_claim_interface(*dev_handle, interface); if (ret) { if (verbose) output("Failed to claim interface\n"); return dr_vidpid_bootrom_no_interface; } } else { if (verbose) output("Did not find PICOBOOT interface\n"); return dr_vidpid_bootrom_no_interface; } } if (!ret) { if (*model == unknown) { struct picoboot_get_info_cmd info_cmd; info_cmd.bType = PICOBOOT_GET_INFO_SYS, info_cmd.dParams[0] = (uint32_t) (SYS_INFO_CHIP_INFO); uint32_t word_buf[64]; // RP2040 doesn't have this function, so returns non-zero int info_ret = picoboot_get_info(*dev_handle, &info_cmd, (uint8_t*)word_buf, sizeof(word_buf)); if (info_ret) { *model = rp2040; } else { *model = rp2350; } } if (strlen(ser) != 0) { if (*model == rp2040) { // Check flash ID, as USB serial number is not unique uint64_t ser_num = strtoull(ser, NULL, 16); uint64_t id = 0; int id_ret = picoboot_flash_id(*dev_handle, &id); if (verbose) output("Flash ID %"PRIX64"\n", id); if (id_ret || (ser_num != id)) { return dr_vidpid_unknown; } } else { // Check USB serial number char ser_str[128]; libusb_get_string_descriptor_ascii(*dev_handle, desc.iSerialNumber, (unsigned char*)ser_str, sizeof(ser_str)); if (strcmp(ser, ser_str)) { return dr_vidpid_unknown; } } } return dr_vidpid_bootrom_ok; } assert(ret); if (*dev_handle) { libusb_close(*dev_handle); *dev_handle = NULL; } return dr_error; } static bool is_halted(libusb_device_handle *usb_device, int ep) { uint8_t data[2]; int transferred = libusb_control_transfer( usb_device, /*LIBUSB_REQUEST_TYPE_STANDARD | */LIBUSB_RECIPIENT_ENDPOINT | LIBUSB_ENDPOINT_IN, LIBUSB_REQUEST_GET_STATUS, 0, ep, data, sizeof(data), 1000); if (transferred != sizeof(data)) { output("Get status failed\n"); return false; } if (data[0] & 1) { if (verbose) output("%d was halted\n", ep); return true; } if (verbose) output("%d was not halted\n", ep); return false; } int picoboot_reset(libusb_device_handle *usb_device) { if (verbose) output("RESET\n"); if (is_halted(usb_device, in_ep)) libusb_clear_halt(usb_device, in_ep); if (is_halted(usb_device, out_ep)) libusb_clear_halt(usb_device, out_ep); int ret = libusb_control_transfer(usb_device, LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_INTERFACE, PICOBOOT_IF_RESET, 0, interface, NULL, 0, 1000); if (ret != 0) { output(" ...failed\n"); return ret; } if (verbose) output(" ...ok\n"); definitely_exclusive = false; return 0; } int picoboot_cmd_status_verbose(libusb_device_handle *usb_device, struct picoboot_cmd_status *status, bool local_verbose) { struct picoboot_cmd_status s; if (!status) status = &s; if (local_verbose) output("CMD_STATUS\n"); int ret = libusb_control_transfer(usb_device, LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_INTERFACE | LIBUSB_ENDPOINT_IN, PICOBOOT_IF_CMD_STATUS, 0, interface, (uint8_t *) status, sizeof(*status), 1000); if (ret != sizeof(*status)) { output(" ...failed\n"); return ret; } if (local_verbose) output(" ... cmd %02x%s tok=%08x status=%d\n", status->bCmdId, status->bInProgress ? " (in progress)" : "", status->dToken, status->dStatusCode); return 0; } int picoboot_cmd_status(libusb_device_handle *usb_device, struct picoboot_cmd_status *status) { return picoboot_cmd_status_verbose(usb_device, status, verbose); } int one_time_bulk_timeout; int picoboot_cmd(libusb_device_handle *usb_device, struct picoboot_cmd *cmd, uint8_t *buffer, unsigned int buf_size) { int sent = 0; int ret; static int token = 1; cmd->dMagic = PICOBOOT_MAGIC; cmd->dToken = token++; ret = libusb_bulk_transfer(usb_device, out_ep, (uint8_t *) cmd, sizeof(struct picoboot_cmd), &sent, 3000); if (ret != 0 || sent != sizeof(struct picoboot_cmd)) { output(" ...failed to send command %d\n", ret); return ret; } int saved_xip_state = xip_state; bool saved_exclusive = definitely_exclusive; xip_state = XIP_UNKOWN; definitely_exclusive = false; int timeout = 10000; if (one_time_bulk_timeout) { timeout = one_time_bulk_timeout; one_time_bulk_timeout = 0; } if (cmd->dTransferLength != 0) { assert(buf_size >= cmd->dTransferLength); if (cmd->bCmdId & 0x80u) { if (verbose) output(" receive %d...\n", cmd->dTransferLength); int received = 0; ret = libusb_bulk_transfer(usb_device, in_ep, buffer, cmd->dTransferLength, &received, timeout); if (ret != 0 || received != (int) cmd->dTransferLength) { output(" ...failed to receive data %d %d/%d\n", ret, received, cmd->dTransferLength); if (!ret) ret = 1; return ret; } } else { if (verbose) output(" send %d...\n", cmd->dTransferLength); ret = libusb_bulk_transfer(usb_device, out_ep, buffer, cmd->dTransferLength, &sent, timeout); if (ret != 0 || sent != (int) cmd->dTransferLength) { output(" ...failed to send data %d %d/%d\n", ret, sent, cmd->dTransferLength); if (!ret) ret = 1; picoboot_cmd_status_verbose(usb_device, NULL, true); return ret; } } } // ack is in opposite direction int received = 0; uint8_t spoon[64]; if (cmd->bCmdId & 0x80u) { if (verbose) output("zero length out\n"); ret = libusb_bulk_transfer(usb_device, out_ep, spoon, 1, &received, cmd->dTransferLength == 0 ? timeout : 3000); } else { if (verbose) output("zero length in\n"); ret = libusb_bulk_transfer(usb_device, in_ep, spoon, 1, &received, cmd->dTransferLength == 0 ? timeout : 3000); } if (!ret) { // do our defensive best to keep the xip_state up to date switch (cmd->bCmdId) { case PC_EXIT_XIP: xip_state = XIP_INACTIVE; break; case PC_ENTER_CMD_XIP: xip_state = XIP_ACTIVE; break; case PC_READ: case PC_WRITE: // whitelist PC_READ and PC_WRITE as not affecting xip state xip_state = saved_xip_state; break; default: xip_state = XIP_UNKOWN; break; } // do our defensive best to keep the exclusive var up to date switch (cmd->bCmdId) { case PC_EXCLUSIVE_ACCESS: definitely_exclusive = cmd->exclusive_cmd.bExclusive; break; case PC_ENTER_CMD_XIP: case PC_EXIT_XIP: case PC_READ: case PC_WRITE: // whitelist PC_READ and PC_WRITE as not affecting xip state definitely_exclusive = saved_exclusive; break; default: definitely_exclusive = false; break; } } return ret; } int picoboot_exclusive_access(libusb_device_handle *usb_device, uint8_t exclusive) { if (verbose) output("EXCLUSIVE ACCESS %d\n", exclusive); struct picoboot_cmd cmd; cmd.bCmdId = PC_EXCLUSIVE_ACCESS; cmd.exclusive_cmd.bExclusive = exclusive; cmd.bCmdSize = sizeof(struct picoboot_exclusive_cmd); cmd.dTransferLength = 0; return picoboot_cmd(usb_device, &cmd, NULL, 0); } int picoboot_exit_xip(libusb_device_handle *usb_device) { if (definitely_exclusive && xip_state == XIP_INACTIVE) { if (verbose) output("Skipping EXIT_XIP"); return 0; } struct picoboot_cmd cmd; if (verbose) output("EXIT_XIP\n"); cmd.bCmdId = PC_EXIT_XIP; cmd.bCmdSize = 0; cmd.dTransferLength = 0; xip_state = XIP_INACTIVE; return picoboot_cmd(usb_device, &cmd, NULL, 0); } int picoboot_enter_cmd_xip(libusb_device_handle *usb_device) { struct picoboot_cmd cmd; if (verbose) output("ENTER_CMD_XIP\n"); cmd.bCmdId = PC_ENTER_CMD_XIP; cmd.bCmdSize = 0; cmd.dTransferLength = 0; xip_state = XIP_ACTIVE; return picoboot_cmd(usb_device, &cmd, NULL, 0); } int picoboot_reboot(libusb_device_handle *usb_device, uint32_t pc, uint32_t sp, uint32_t delay_ms) { struct picoboot_cmd cmd; if (verbose) output("REBOOT %08x %08x %u\n", (unsigned int) pc, (unsigned int) sp, (unsigned int) delay_ms); cmd.bCmdId = PC_REBOOT; cmd.bCmdSize = sizeof(cmd.reboot_cmd); cmd.dTransferLength = 0; cmd.reboot_cmd.dPC = pc; cmd.reboot_cmd.dSP = sp; cmd.reboot_cmd.dDelayMS = delay_ms; return picoboot_cmd(usb_device, &cmd, NULL, 0); } int picoboot_reboot2(libusb_device_handle *usb_device, struct picoboot_reboot2_cmd *reboot_cmd) { struct picoboot_cmd cmd; if (verbose) output("REBOOT %08x %08x %08x %u\n", (unsigned int)reboot_cmd->dFlags, (unsigned int) reboot_cmd->dParam0, (unsigned int) reboot_cmd->dParam1, (unsigned int) reboot_cmd->dDelayMS); cmd.bCmdId = PC_REBOOT2; cmd.bCmdSize = sizeof(cmd.reboot2_cmd); cmd.reboot2_cmd = *reboot_cmd; cmd.dTransferLength = 0; return picoboot_cmd(usb_device, &cmd, NULL, 0); } int picoboot_exec(libusb_device_handle *usb_device, uint32_t addr) { struct picoboot_cmd cmd; // shouldn't be necessary any more // addr |= 1u; // Thumb bit if (verbose) output("EXEC %08x\n", (unsigned int) addr); cmd.bCmdId = PC_EXEC; cmd.bCmdSize = sizeof(cmd.address_only_cmd); cmd.dTransferLength = 0; cmd.address_only_cmd.dAddr = addr; return picoboot_cmd(usb_device, &cmd, NULL, 0); } // int picoboot_exec2(libusb_device_handle *usb_device, struct picoboot_exec2_cmd *exec2_cmd) { // struct picoboot_cmd cmd; // // shouldn't be necessary any more // // addr |= 1u; // Thumb bit // //if (verbose) output("EXEC2 %08x\n", (unsigned int) exec2_cmd->scan_base); // cmd.bCmdId = PC_EXEC2; // cmd.bCmdSize = sizeof(cmd.exec2_cmd); // cmd.dTransferLength = 0; // cmd.exec2_cmd = *exec2_cmd; // return picoboot_cmd(usb_device, &cmd, NULL, 0); // } // currently unused int picoboot_flash_erase(libusb_device_handle *usb_device, uint32_t addr, uint32_t len) { struct picoboot_cmd cmd; if (verbose) output("FLASH_ERASE %08x+%08x\n", (unsigned int) addr, (unsigned int) len); cmd.bCmdId = PC_FLASH_ERASE; cmd.bCmdSize = sizeof(cmd.range_cmd); cmd.range_cmd.dAddr = addr; cmd.range_cmd.dSize = len; cmd.dTransferLength = 0; return picoboot_cmd(usb_device, &cmd, NULL, 0); } int picoboot_vector(libusb_device_handle *usb_device, uint32_t addr) { struct picoboot_cmd cmd; if (verbose) output("VECTOR %08x\n", (unsigned int) addr); cmd.bCmdId = PC_VECTORIZE_FLASH; cmd.bCmdSize = sizeof(cmd.address_only_cmd); cmd.range_cmd.dAddr = addr; cmd.dTransferLength = 0; return picoboot_cmd(usb_device, &cmd, NULL, 0); } int picoboot_write(libusb_device_handle *usb_device, uint32_t addr, uint8_t *buffer, uint32_t len) { struct picoboot_cmd cmd; if (verbose) output("WRITE %08x+%08x\n", (unsigned int) addr, (unsigned int) len); cmd.bCmdId = PC_WRITE; cmd.bCmdSize = sizeof(cmd.range_cmd); cmd.range_cmd.dAddr = addr; cmd.range_cmd.dSize = cmd.dTransferLength = len; return picoboot_cmd(usb_device, &cmd, buffer, len); } int picoboot_read(libusb_device_handle *usb_device, uint32_t addr, uint8_t *buffer, uint32_t len) { memset(buffer, 0xaa, len); if (verbose) output("READ %08x+%08x\n", (unsigned int) addr, (unsigned int) len); struct picoboot_cmd cmd; cmd.bCmdId = PC_READ; cmd.bCmdSize = sizeof(cmd.range_cmd); cmd.range_cmd.dAddr = addr; cmd.range_cmd.dSize = cmd.dTransferLength = len; int ret = picoboot_cmd(usb_device, &cmd, buffer, len); if (!ret && len < 256 && verbose) { for (uint32_t i = 0; i < len; i += 32) { output("\t"); for (uint32_t j = i; j < MIN(len, i + 32); j++) { output("0x%02x, ", buffer[j]); } output("\n"); } } return ret; } int picoboot_otp_write(libusb_device_handle *usb_device, struct picoboot_otp_cmd *otp_cmd, uint8_t *buffer, uint32_t len) { struct picoboot_cmd cmd; if (verbose) output("OTP WRITE %04x+%08x ecc=%d\n", (unsigned int) otp_cmd->wRow, otp_cmd->wRowCount, otp_cmd->bEcc); cmd.bCmdId = PC_OTP_WRITE; #ifdef _MSC_VER cmd.bCmdSize = 5; // for some reason with MSVC, and only with picoboot_otp_cmd, the size is 6 not 5?? #else cmd.bCmdSize = sizeof(cmd.otp_cmd); #endif cmd.otp_cmd = *otp_cmd; cmd.dTransferLength = len; one_time_bulk_timeout = 5000 + len * 5; return picoboot_cmd(usb_device, &cmd, buffer, len); } int picoboot_otp_read(libusb_device_handle *usb_device, struct picoboot_otp_cmd *otp_cmd, uint8_t *buffer, uint32_t len) { struct picoboot_cmd cmd; if (verbose) output("OTP READ %04x+%08x ecc=%d\n", (unsigned int) otp_cmd->wRow, otp_cmd->wRowCount, otp_cmd->bEcc); cmd.bCmdId = PC_OTP_READ; #ifdef _MSC_VER cmd.bCmdSize = 5; // for some reason with MSVC, and only with picoboot_otp_cmd, the size is 6 not 5?? #else cmd.bCmdSize = sizeof(cmd.otp_cmd); #endif cmd.otp_cmd = *otp_cmd; cmd.dTransferLength = len; return picoboot_cmd(usb_device, &cmd, buffer, len); } int picoboot_get_info(libusb_device_handle *usb_device, struct picoboot_get_info_cmd *get_info_cmd, uint8_t *buffer, uint32_t len) { if (verbose) output("GET_INFO\n"); struct picoboot_cmd cmd; cmd.bCmdId = PC_GET_INFO; cmd.bCmdSize = sizeof(cmd.get_info_cmd); cmd.get_info_cmd = *get_info_cmd; cmd.dTransferLength = len; int ret = picoboot_cmd(usb_device, &cmd, buffer, len); return ret; } #if 1 // Peek/poke via EXEC // 00000000 : // 0: 4801 ldr r0, [pc, #4] ; (8 ) // 2: 4902 ldr r1, [pc, #8] ; (c ) // 4: 6008 str r0, [r1, #0] // 6: 4770 bx lr // 00000008 : // 8: 12345678 .word 0x12345678 // 0000000c : // c: 9abcdef0 .word 0x9abcdef0 static const size_t picoboot_poke_cmd_len = 8; static const uint8_t picoboot_poke_cmd[] = { 0x01, 0x48, 0x02, 0x49, 0x08, 0x60, 0x70, 0x47 }; #define PICOBOOT_POKE_CMD_PROG_SIZE (size_t)(8 + 8) // 00000000 : // 0: 4802 ldr r0, [pc, #8] ; (c ) // 2: 6800 ldr r0, [r0, #0] // 4: 4679 mov r1, pc // 6: 6048 str r0, [r1, #4] // 8: 4770 bx lr // a: 46c0 nop ; (mov r8, r8) // 0000000c : // c: 0add7355 .word 0x0add7355 static const size_t picoboot_peek_cmd_len = 12; static const uint8_t picoboot_peek_cmd[] = { 0x02, 0x48, 0x00, 0x68, 0x79, 0x46, 0x48, 0x60, 0x70, 0x47, 0xc0, 0x46 }; #define PICOBOOT_PEEK_CMD_PROG_SIZE (size_t)(12 + 4) // 00000000 : // 0: a002 add r0, pc, #8 @ (adr r0, c ) // 2: a106 add r1, pc, #24 @ (adr r1, 1c ) // 4: 4a00 ldr r2, [pc, #0] @ (8 ) // 6: e011 b.n 2c // 8: 0000000d .word 0x0000000d // c: 0000004b .word 0x0000004b // ... // // 0000002c : // 2c: 2380 movs r3, #128 @ 0x80 // 2e: b5f0 push {r4, r5, r6, r7, lr} // 30: 4e17 ldr r6, [pc, #92] @ (90 ) // 32: 009b lsls r3, r3, #2 // 34: 6834 ldr r4, [r6, #0] // 36: 4063 eors r3, r4 // 38: 24c0 movs r4, #192 @ 0xc0 // 3a: 00a4 lsls r4, r4, #2 // 3c: 4023 ands r3, r4 // 3e: 4c15 ldr r4, [pc, #84] @ (94 ) // 40: 6023 str r3, [r4, #0] // 42: 24c0 movs r4, #192 @ 0xc0 // 44: 0013 movs r3, r2 // 46: 0564 lsls r4, r4, #21 // 48: 0017 movs r7, r2 // 4a: 431f orrs r7, r3 // 4c: d106 bne.n 5c // 4e: 23c0 movs r3, #192 @ 0xc0 // 50: 6832 ldr r2, [r6, #0] // 52: 009b lsls r3, r3, #2 // 54: 4393 bics r3, r2 // 56: 4a0f ldr r2, [pc, #60] @ (94 ) // 58: 6013 str r3, [r2, #0] // 5a: bdf0 pop {r4, r5, r6, r7, pc} // 5c: 2508 movs r5, #8 // 5e: 6aa7 ldr r7, [r4, #40] @ 0x28 // 60: 403d ands r5, r7 // 62: 46ac mov ip, r5 // 64: 2502 movs r5, #2 // 66: 422f tst r7, r5 // 68: d008 beq.n 7c // 6a: 2a00 cmp r2, #0 // 6c: d006 beq.n 7c // 6e: 1a9f subs r7, r3, r2 // 70: 2f0d cmp r7, #13 // 72: d803 bhi.n 7c // 74: 7807 ldrb r7, [r0, #0] // 76: 3a01 subs r2, #1 // 78: 6627 str r7, [r4, #96] @ 0x60 // 7a: 3001 adds r0, #1 // 7c: 4665 mov r5, ip // 7e: 2d00 cmp r5, #0 // 80: d0e2 beq.n 48 // 82: 2b00 cmp r3, #0 // 84: d0e0 beq.n 48 // 86: 6e27 ldr r7, [r4, #96] @ 0x60 // 88: 3b01 subs r3, #1 // 8a: 700f strb r7, [r1, #0] // 8c: 3101 adds r1, #1 // 8e: e7db b.n 48 // 90: 4001800c .word 0x4001800c // 94: 4001900c .word 0x4001900c #include "flash_id_bin.h" #define PICOBOOT_FLASH_ID_CMD_PROG_SIZE (const size_t)(152) // TODO better place for this e.g. the USB DPRAM location the controller has already put it in #define PEEK_POKE_CODE_LOC 0x20000000u #define FLASH_ID_CODE_LOC 0x15000000 // XIP_SRAM_BASE on RP2040, as we're not using XIP so probably fine #define FLASH_ID_UID_ADDR (FLASH_ID_CODE_LOC + 28 + 1 + 4) int picoboot_poke(libusb_device_handle *usb_device, uint32_t addr, uint32_t data) { uint8_t prog[PICOBOOT_POKE_CMD_PROG_SIZE]; output("POKE (D)%08x -> (A)%08x\n", data, addr); memcpy(prog, picoboot_poke_cmd, picoboot_poke_cmd_len); *(uint32_t *) (prog + picoboot_poke_cmd_len) = data; *(uint32_t *) (prog + picoboot_poke_cmd_len + 4) = addr; int ret = picoboot_write(usb_device, PEEK_POKE_CODE_LOC, prog, PICOBOOT_POKE_CMD_PROG_SIZE); if (ret) return ret; return picoboot_exec(usb_device, PEEK_POKE_CODE_LOC); } // TODO haven't checked the store goes to the right address :) int picoboot_peek(libusb_device_handle *usb_device, uint32_t addr, uint32_t *data) { uint8_t prog[PICOBOOT_PEEK_CMD_PROG_SIZE]; output("PEEK %08x\n", addr); memcpy(prog, picoboot_peek_cmd, picoboot_peek_cmd_len); *(uint32_t *) (prog + picoboot_peek_cmd_len) = addr; int ret = picoboot_write(usb_device, PEEK_POKE_CODE_LOC, prog, PICOBOOT_PEEK_CMD_PROG_SIZE); if (ret) return ret; ret = picoboot_exec(usb_device, PEEK_POKE_CODE_LOC); if (ret) return ret; return picoboot_read(usb_device, PEEK_POKE_CODE_LOC + picoboot_peek_cmd_len, (uint8_t *) data, sizeof(uint32_t)); } int picoboot_flash_id(libusb_device_handle *usb_device, uint64_t *data) { picoboot_exclusive_access(usb_device, 1); assert(PICOBOOT_FLASH_ID_CMD_PROG_SIZE == flash_id_bin_SIZE); uint8_t prog[PICOBOOT_FLASH_ID_CMD_PROG_SIZE]; uint64_t id; output("GET FLASH ID\n"); memcpy(prog, flash_id_bin, flash_id_bin_SIZE); // ensure XIP is exited before executing int ret = picoboot_exit_xip(usb_device); if (ret) goto flash_id_return; ret = picoboot_write(usb_device, FLASH_ID_CODE_LOC, prog, PICOBOOT_FLASH_ID_CMD_PROG_SIZE); if (ret) goto flash_id_return; ret = picoboot_exec(usb_device, FLASH_ID_CODE_LOC); if (ret) goto flash_id_return; ret = picoboot_read(usb_device, FLASH_ID_UID_ADDR, (uint8_t *) &id, sizeof(uint64_t)); *data = (((id & 0x00000000000000FF) << 56) | ((id & 0x000000000000FF00) << 40) | ((id & 0x0000000000FF0000) << 24) | ((id & 0x00000000FF000000) << 8) | ((id & 0x000000FF00000000) >> 8) | ((id & 0x0000FF0000000000) >> 24) | ((id & 0x00FF000000000000) >> 40) | ((id & 0xFF00000000000000) >> 56)); flash_id_return: picoboot_exclusive_access(usb_device, 0); return ret; } #endif